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@@ -1,5648 +0,0 @@
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-/* armemu.c -- Main instruction emulation: ARM7 Instruction Emulator.
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- Copyright (C) 1994 Advanced RISC Machines Ltd.
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- Modifications to add arch. v4 support by <jsmith@cygnus.com>.
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-
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- This program is free software; you can redistribute it and/or modify
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- it under the terms of the GNU General Public License as published by
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- the Free Software Foundation; either version 2 of the License, or
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- (at your option) any later version.
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-
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- This program is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- GNU General Public License for more details.
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-
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- You should have received a copy of the GNU General Public License
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- along with this program; if not, write to the Free Software
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- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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-
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-#include "core/arm/skyeye_common/arm_regformat.h"
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-#include "core/arm/skyeye_common/armdefs.h"
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-#include "core/arm/skyeye_common/armemu.h"
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-#include "core/hle/hle.h"
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-
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-static ARMword GetDPRegRHS (ARMul_State *, ARMword);
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-static ARMword GetDPSRegRHS (ARMul_State *, ARMword);
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-static void WriteR15 (ARMul_State *, ARMword);
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-static void WriteSR15 (ARMul_State *, ARMword);
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-static void WriteR15Branch (ARMul_State *, ARMword);
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-static ARMword GetLSRegRHS (ARMul_State *, ARMword);
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-static ARMword GetLS7RHS (ARMul_State *, ARMword);
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-static unsigned LoadWord (ARMul_State *, ARMword, ARMword);
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-static unsigned LoadHalfWord (ARMul_State *, ARMword, ARMword, int);
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-static unsigned LoadByte (ARMul_State *, ARMword, ARMword, int);
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-static unsigned StoreWord (ARMul_State *, ARMword, ARMword);
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-static unsigned StoreHalfWord (ARMul_State *, ARMword, ARMword);
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-static unsigned StoreByte (ARMul_State *, ARMword, ARMword);
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-static void LoadMult (ARMul_State *, ARMword, ARMword, ARMword);
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-static void StoreMult (ARMul_State *, ARMword, ARMword, ARMword);
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-static void LoadSMult (ARMul_State *, ARMword, ARMword, ARMword);
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-static void StoreSMult (ARMul_State *, ARMword, ARMword, ARMword);
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-static unsigned Multiply64 (ARMul_State *, ARMword, int, int);
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-static unsigned MultiplyAdd64 (ARMul_State *, ARMword, int, int);
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-static void Handle_Load_Double (ARMul_State *, ARMword);
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-static void Handle_Store_Double (ARMul_State *, ARMword);
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-
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-static int handle_v6_insn (ARMul_State * state, ARMword instr);
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-
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-#define LUNSIGNED (0) /* unsigned operation */
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-#define LSIGNED (1) /* signed operation */
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-#define LDEFAULT (0) /* default : do nothing */
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-#define LSCC (1) /* set condition codes on result */
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-
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-/* Short-hand macros for LDR/STR. */
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-
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-/* Store post decrement writeback. */
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-#define SHDOWNWB() \
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- lhs = LHS ; \
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- if (StoreHalfWord (state, instr, lhs)) \
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- LSBase = lhs - GetLS7RHS (state, instr);
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-
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-/* Store post increment writeback. */
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-#define SHUPWB() \
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- lhs = LHS ; \
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- if (StoreHalfWord (state, instr, lhs)) \
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- LSBase = lhs + GetLS7RHS (state, instr);
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-
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-/* Store pre decrement. */
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-#define SHPREDOWN() \
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- (void)StoreHalfWord (state, instr, LHS - GetLS7RHS (state, instr));
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-
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-/* Store pre decrement writeback. */
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-#define SHPREDOWNWB() \
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- temp = LHS - GetLS7RHS (state, instr); \
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- if (StoreHalfWord (state, instr, temp)) \
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- LSBase = temp;
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-
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-/* Store pre increment. */
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-#define SHPREUP() \
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- (void)StoreHalfWord (state, instr, LHS + GetLS7RHS (state, instr));
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-
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-/* Store pre increment writeback. */
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-#define SHPREUPWB() \
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- temp = LHS + GetLS7RHS (state, instr); \
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- if (StoreHalfWord (state, instr, temp)) \
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- LSBase = temp;
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-
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-/* Load post decrement writeback. */
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-#define LHPOSTDOWN() \
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-{ \
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- int done = 1; \
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- lhs = LHS; \
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- temp = lhs - GetLS7RHS (state, instr); \
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- \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- if (LoadHalfWord (state, instr, lhs, LUNSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 2: /* SB */ \
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- if (LoadByte (state, instr, lhs, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 3: /* SH */ \
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- if (LoadHalfWord (state, instr, lhs, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 0: /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* Load post increment writeback. */
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-#define LHPOSTUP() \
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-{ \
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- int done = 1; \
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- lhs = LHS; \
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- temp = lhs + GetLS7RHS (state, instr); \
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- \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- if (LoadHalfWord (state, instr, lhs, LUNSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 2: /* SB */ \
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- if (LoadByte (state, instr, lhs, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 3: /* SH */ \
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- if (LoadHalfWord (state, instr, lhs, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 0: /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* Load pre decrement. */
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-#define LHPREDOWN() \
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-{ \
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- int done = 1; \
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- \
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- temp = LHS - GetLS7RHS (state, instr); \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- (void) LoadHalfWord (state, instr, temp, LUNSIGNED); \
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- break; \
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- case 2: /* SB */ \
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- (void) LoadByte (state, instr, temp, LSIGNED); \
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- break; \
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- case 3: /* SH */ \
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- (void) LoadHalfWord (state, instr, temp, LSIGNED); \
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- break; \
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- case 0: \
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- /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* Load pre decrement writeback. */
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-#define LHPREDOWNWB() \
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-{ \
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- int done = 1; \
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- \
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- temp = LHS - GetLS7RHS (state, instr); \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- if (LoadHalfWord (state, instr, temp, LUNSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 2: /* SB */ \
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- if (LoadByte (state, instr, temp, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 3: /* SH */ \
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- if (LoadHalfWord (state, instr, temp, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 0: \
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- /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* Load pre increment. */
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-#define LHPREUP() \
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-{ \
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- int done = 1; \
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- \
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- temp = LHS + GetLS7RHS (state, instr); \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- (void) LoadHalfWord (state, instr, temp, LUNSIGNED); \
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- break; \
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- case 2: /* SB */ \
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- (void) LoadByte (state, instr, temp, LSIGNED); \
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- break; \
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- case 3: /* SH */ \
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- (void) LoadHalfWord (state, instr, temp, LSIGNED); \
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- break; \
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- case 0: \
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- /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* Load pre increment writeback. */
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-#define LHPREUPWB() \
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-{ \
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- int done = 1; \
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- \
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- temp = LHS + GetLS7RHS (state, instr); \
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- switch (BITS (5, 6)) \
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- { \
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- case 1: /* H */ \
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- if (LoadHalfWord (state, instr, temp, LUNSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 2: /* SB */ \
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- if (LoadByte (state, instr, temp, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 3: /* SH */ \
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- if (LoadHalfWord (state, instr, temp, LSIGNED)) \
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- LSBase = temp; \
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- break; \
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- case 0: \
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- /* SWP handled elsewhere. */ \
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- default: \
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- done = 0; \
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- break; \
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- } \
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- if (done) \
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- break; \
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-}
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-
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-/* EMULATION of ARM6. */
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-
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-int ARMul_ICE_debug(ARMul_State *state,ARMword instr,ARMword addr);
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-#ifdef MODE32
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-//chy 2006-04-12, for ICE debug
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-int ARMul_ICE_debug(ARMul_State *state,ARMword instr,ARMword addr)
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-{
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- return 0;
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-}
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-
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-ARMword ARMul_Debug(ARMul_State * state, ARMword pc, ARMword instr)
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-{
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- return 0;
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-}
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-
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-ARMword ARMul_Emulate32(ARMul_State* state)
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-#else
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-ARMword ARMul_Emulate26(ARMul_State* state)
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-#endif
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-{
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- /* The PC pipeline value depends on whether ARM
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- or Thumb instructions are being
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- d. */
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- ARMword isize;
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- ARMword instr; /* The current instruction. */
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- ARMword dest = 0; /* Almost the DestBus. */
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- ARMword temp; /* Ubiquitous third hand. */
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- ARMword pc = 0; /* The address of the current instruction. */
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- ARMword lhs; /* Almost the ABus and BBus. */
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- ARMword rhs;
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- ARMword decoded = 0; /* Instruction pipeline. */
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- ARMword loaded = 0;
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- ARMword decoded_addr=0;
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- ARMword loaded_addr=0;
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- ARMword have_bp=0;
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-
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- /* Execute the next instruction. */
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- if (state->NextInstr < PRIMEPIPE) {
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- decoded = state->decoded;
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- loaded = state->loaded;
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- pc = state->pc;
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- //chy 2006-04-12, for ICE debug
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- decoded_addr=state->decoded_addr;
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- loaded_addr=state->loaded_addr;
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- }
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-
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- do {
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- //print_func_name(state->pc);
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- /* Just keep going. */
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- isize = INSN_SIZE;
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-
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- switch (state->NextInstr) {
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- case SEQ:
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- /* Advance the pipeline, and an S cycle. */
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- state->Reg[15] += isize;
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- pc += isize;
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- instr = decoded;
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- //chy 2006-04-12, for ICE debug
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- have_bp = ARMul_ICE_debug(state,instr,decoded_addr);
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- decoded = loaded;
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- decoded_addr=loaded_addr;
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- //loaded = ARMul_LoadInstrS (state, pc + (isize * 2),
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- // isize);
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- loaded_addr=pc + (isize * 2);
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- if (have_bp) goto TEST_EMULATE;
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- break;
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-
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- case NONSEQ:
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- /* Advance the pipeline, and an N cycle. */
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- state->Reg[15] += isize;
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- pc += isize;
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- instr = decoded;
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- //chy 2006-04-12, for ICE debug
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- have_bp=ARMul_ICE_debug(state,instr,decoded_addr);
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- decoded = loaded;
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- decoded_addr=loaded_addr;
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- //loaded = ARMul_LoadInstrN (state, pc + (isize * 2),
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- // isize);
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- loaded_addr=pc + (isize * 2);
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- NORMALCYCLE;
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- if (have_bp) goto TEST_EMULATE;
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- break;
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-
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- case PCINCEDSEQ:
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- /* Program counter advanced, and an S cycle. */
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- pc += isize;
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- instr = decoded;
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- //chy 2006-04-12, for ICE debug
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- have_bp=ARMul_ICE_debug(state,instr,decoded_addr);
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- decoded = loaded;
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- decoded_addr=loaded_addr;
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- //loaded = ARMul_LoadInstrS (state, pc + (isize * 2),
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- // isize);
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- loaded_addr=pc + (isize * 2);
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- NORMALCYCLE;
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- if (have_bp) goto TEST_EMULATE;
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- break;
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-
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- case PCINCEDNONSEQ:
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- /* Program counter advanced, and an N cycle. */
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- pc += isize;
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- instr = decoded;
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- //chy 2006-04-12, for ICE debug
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- have_bp=ARMul_ICE_debug(state,instr,decoded_addr);
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- decoded = loaded;
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- decoded_addr=loaded_addr;
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- //loaded = ARMul_LoadInstrN (state, pc + (isize * 2),
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- // isize);
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- loaded_addr=pc + (isize * 2);
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- NORMALCYCLE;
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- if (have_bp) goto TEST_EMULATE;
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- break;
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-
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- case RESUME:
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- /* The program counter has been changed. */
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- pc = state->Reg[15];
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-#ifndef MODE32
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- pc = pc & R15PCBITS;
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-#endif
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- state->Reg[15] = pc + (isize * 2);
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- state->Aborted = 0;
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- //chy 2004-05-25, fix bug provided by Carl van Schaik<cvansch@cse.unsw.EDU.AU>
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- state->AbortAddr = 1;
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-
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- instr = ARMul_LoadInstrN (state, pc, isize);
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- //instr = ARMul_ReLoadInstr (state, pc, isize);
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- //chy 2006-04-12, for ICE debug
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- have_bp=ARMul_ICE_debug(state,instr,pc);
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- //decoded =
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- // ARMul_ReLoadInstr (state, pc + isize, isize);
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- decoded_addr=pc+isize;
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- //loaded = ARMul_ReLoadInstr (state, pc + isize * 2,
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- // isize);
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- loaded_addr=pc + isize * 2;
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- NORMALCYCLE;
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- if (have_bp) goto TEST_EMULATE;
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- break;
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-
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- default:
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- /* The program counter has been changed. */
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- pc = state->Reg[15];
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-#ifndef MODE32
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- pc = pc & R15PCBITS;
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-#endif
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- state->Reg[15] = pc + (isize * 2);
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- state->Aborted = 0;
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|
|
- //chy 2004-05-25, fix bug provided by Carl van Schaik<cvansch@cse.unsw.EDU.AU>
|
|
|
- state->AbortAddr = 1;
|
|
|
-
|
|
|
- instr = ARMul_LoadInstrN (state, pc, isize);
|
|
|
-
|
|
|
- //chy 2006-04-12, for ICE debug
|
|
|
- have_bp=ARMul_ICE_debug(state,instr,pc);
|
|
|
-
|
|
|
- decoded_addr=pc+isize;
|
|
|
-
|
|
|
- loaded_addr=pc + isize * 2;
|
|
|
- NORMALCYCLE;
|
|
|
- if (have_bp) goto TEST_EMULATE;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- instr = ARMul_LoadInstrN (state, pc, isize);
|
|
|
- state->last_instr = state->CurrInstr;
|
|
|
- state->CurrInstr = instr;
|
|
|
- ARMul_Debug(state, pc, instr);
|
|
|
-
|
|
|
- /* Any exceptions ? */
|
|
|
- if (state->NresetSig == LOW) {
|
|
|
- ARMul_Abort (state, ARMul_ResetV);
|
|
|
- break;
|
|
|
- } else if (!state->NfiqSig && !FFLAG) {
|
|
|
- ARMul_Abort (state, ARMul_FIQV);
|
|
|
- break;
|
|
|
- } else if (!state->NirqSig && !IFLAG) {
|
|
|
- ARMul_Abort (state, ARMul_IRQV);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (state->Emulate < ONCE) {
|
|
|
- state->NextInstr = RESUME;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- state->NumInstrs++;
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
- /* Provide Thumb instruction decoding. If the processor is in Thumb
|
|
|
- mode, then we can simply decode the Thumb instruction, and map it
|
|
|
- to the corresponding ARM instruction (by directly loading the
|
|
|
- instr variable, and letting the normal ARM simulator
|
|
|
- execute). There are some caveats to ensure that the correct
|
|
|
- pipelined PC value is used when executing Thumb code, and also for
|
|
|
- dealing with the BL instruction. */
|
|
|
- if (TFLAG) {
|
|
|
- ARMword armOp = 0;
|
|
|
- /* Check if in Thumb mode. */
|
|
|
- switch (ARMul_ThumbDecode(state, pc, instr, &armOp)) {
|
|
|
- case t_undefined:
|
|
|
- /* This is a Thumb instruction. */
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- goto donext;
|
|
|
-
|
|
|
- case t_branch:
|
|
|
- /* Already processed. */
|
|
|
- //pc = state->Reg[15] - 2;
|
|
|
- //state->pc = state->Reg[15] - 2; //ichfly why do I need that
|
|
|
- goto donext;
|
|
|
-
|
|
|
- case t_decoded:
|
|
|
- /* ARM instruction available. */
|
|
|
- //printf("t decode %04lx -> %08lx\n", instr & 0xffff, armOp);
|
|
|
-
|
|
|
- if (armOp == 0xDEADC0DE) {
|
|
|
- LOG_ERROR(Core_ARM11, "Failed to decode thumb opcode %04X at %08X", instr, pc);
|
|
|
- }
|
|
|
-
|
|
|
- instr = armOp;
|
|
|
-
|
|
|
- /* So continue instruction decoding. */
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-#endif
|
|
|
- /* Check the condition codes. */
|
|
|
- if ((temp = TOPBITS (28)) == AL) {
|
|
|
- /* Vile deed in the need for speed. */
|
|
|
- goto mainswitch;
|
|
|
- }
|
|
|
-
|
|
|
- /* Check the condition code. */
|
|
|
- switch ((int) TOPBITS (28)) {
|
|
|
- case AL:
|
|
|
- temp = TRUE;
|
|
|
- break;
|
|
|
- case NV:
|
|
|
-
|
|
|
- /* shenoubang add for armv7 instr dmb 2012-3-11 */
|
|
|
- if (state->is_v7) {
|
|
|
- if ((instr & 0x0fffff00) == 0x057ff000) {
|
|
|
- switch((instr >> 4) & 0xf) {
|
|
|
- case 4: /* dsb */
|
|
|
- case 5: /* dmb */
|
|
|
- case 6: /* isb */
|
|
|
- // TODO: do no implemented thes instr
|
|
|
- goto donext;
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- /* dyf add for armv6 instruct CPS 2010.9.17 */
|
|
|
- if (state->is_v6) {
|
|
|
- /* clrex do nothing here temporary */
|
|
|
- if (instr == 0xf57ff01f) {
|
|
|
- //printf("clrex \n");
|
|
|
- /* shenoubang 2012-3-14 refer the dyncom_interpreter */
|
|
|
- state->exclusive_tag_array[0] = 0xFFFFFFFF;
|
|
|
- state->exclusive_access_state = 0;
|
|
|
- goto donext;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS(20, 27) == 0x10) {
|
|
|
- if (BIT(19)) {
|
|
|
- if (BIT(8)) {
|
|
|
- if (BIT(18))
|
|
|
- state->Cpsr |= 1<<8;
|
|
|
- else
|
|
|
- state->Cpsr &= ~(1<<8);
|
|
|
- }
|
|
|
- if (BIT(7)) {
|
|
|
- if (BIT(18))
|
|
|
- state->Cpsr |= 1<<7;
|
|
|
- else
|
|
|
- state->Cpsr &= ~(1<<7);
|
|
|
- ASSIGNINT (state->Cpsr & INTBITS);
|
|
|
- }
|
|
|
- if (BIT(6)) {
|
|
|
- if (BIT(18))
|
|
|
- state->Cpsr |= 1<<6;
|
|
|
- else
|
|
|
- state->Cpsr &= ~(1<<6);
|
|
|
- ASSIGNINT (state->Cpsr & INTBITS);
|
|
|
- }
|
|
|
- }
|
|
|
- if (BIT(17)) {
|
|
|
- state->Cpsr |= BITS(0, 4);
|
|
|
- printf("skyeye test state->Mode\n");
|
|
|
- if (state->Mode != (state->Cpsr & MODEBITS)) {
|
|
|
- state->Mode = ARMul_SwitchMode (state, state->Mode, state->Cpsr & MODEBITS);
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- }
|
|
|
- }
|
|
|
- goto donext;
|
|
|
- }
|
|
|
- }
|
|
|
- if (state->is_v5) {
|
|
|
- if (BITS (25, 27) == 5) { /* BLX(1) */
|
|
|
- ARMword dest;
|
|
|
-
|
|
|
- state->Reg[14] = pc + 4;
|
|
|
-
|
|
|
- /* Force entry into Thumb mode. */
|
|
|
- dest = pc + 8 + 1;
|
|
|
- if (BIT (23))
|
|
|
- dest += (NEGBRANCH +
|
|
|
- (BIT (24) << 1));
|
|
|
- else
|
|
|
- dest += POSBRANCH +
|
|
|
- (BIT (24) << 1);
|
|
|
-
|
|
|
- WriteR15Branch (state, dest);
|
|
|
- goto donext;
|
|
|
- } else if ((instr & 0xFC70F000) == 0xF450F000) {
|
|
|
- /* The PLD instruction. Ignored. */
|
|
|
- goto donext;
|
|
|
- } else if (((instr & 0xfe500f00) == 0xfc100100)
|
|
|
- || ((instr & 0xfe500f00) ==
|
|
|
- 0xfc000100)) {
|
|
|
- /* wldrw and wstrw are unconditional. */
|
|
|
- goto mainswitch;
|
|
|
- } else {
|
|
|
- /* UNDEFINED in v5, UNPREDICTABLE in v3, v4, non executed in v1, v2. */
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- }
|
|
|
- }
|
|
|
- temp = FALSE;
|
|
|
- break;
|
|
|
- case EQ:
|
|
|
- temp = ZFLAG;
|
|
|
- break;
|
|
|
- case NE:
|
|
|
- temp = !ZFLAG;
|
|
|
- break;
|
|
|
- case VS:
|
|
|
- temp = VFLAG;
|
|
|
- break;
|
|
|
- case VC:
|
|
|
- temp = !VFLAG;
|
|
|
- break;
|
|
|
- case MI:
|
|
|
- temp = NFLAG;
|
|
|
- break;
|
|
|
- case PL:
|
|
|
- temp = !NFLAG;
|
|
|
- break;
|
|
|
- case CS:
|
|
|
- temp = CFLAG;
|
|
|
- break;
|
|
|
- case CC:
|
|
|
- temp = !CFLAG;
|
|
|
- break;
|
|
|
- case HI:
|
|
|
- temp = (CFLAG && !ZFLAG);
|
|
|
- break;
|
|
|
- case LS:
|
|
|
- temp = (!CFLAG || ZFLAG);
|
|
|
- break;
|
|
|
- case GE:
|
|
|
- temp = ((!NFLAG && !VFLAG) || (NFLAG && VFLAG));
|
|
|
- break;
|
|
|
- case LT:
|
|
|
- temp = ((NFLAG && !VFLAG) || (!NFLAG && VFLAG));
|
|
|
- break;
|
|
|
- case GT:
|
|
|
- temp = ((!NFLAG && !VFLAG && !ZFLAG)
|
|
|
- || (NFLAG && VFLAG && !ZFLAG));
|
|
|
- break;
|
|
|
- case LE:
|
|
|
- temp = ((NFLAG && !VFLAG) || (!NFLAG && VFLAG))
|
|
|
- || ZFLAG;
|
|
|
- break;
|
|
|
- } /* cc check */
|
|
|
-
|
|
|
-//chy 2003-08-24 now #if 0 .... #endif process cp14, cp15.reg14, I disable it...
|
|
|
-
|
|
|
- /* Actual execution of instructions begins here. */
|
|
|
- /* If the condition codes don't match, stop here. */
|
|
|
- if (temp) {
|
|
|
-mainswitch:
|
|
|
-
|
|
|
- /* shenoubang sbfx and ubfx instr 2012-3-16 */
|
|
|
- if (state->is_v6) {
|
|
|
- unsigned int m, lsb, width, Rd, Rn, data;
|
|
|
- Rd = Rn = lsb = width = data = m = 0;
|
|
|
-
|
|
|
- //printf("helloworld\n");
|
|
|
- if ((((int) BITS (21, 27)) == 0x3f) && (((int) BITS (4, 6)) == 0x5)) {
|
|
|
- m = (unsigned)BITS(7, 11);
|
|
|
- width = (unsigned)BITS(16, 20);
|
|
|
- Rd = (unsigned)BITS(12, 15);
|
|
|
- Rn = (unsigned)BITS(0, 3);
|
|
|
- if ((Rd == 15) || (Rn == 15)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- } else if ((m + width) < 32) {
|
|
|
- data = state->Reg[Rn];
|
|
|
- state->Reg[Rd] ^= state->Reg[Rd];
|
|
|
- state->Reg[Rd] = ((ARMword)(data << (31 -(m + width))) >> ((31 - (m + width)) + (m)));
|
|
|
- //SKYEYE_LOG_IN_CLR(RED, "UBFX: In %s, line = %d, Reg_src[%d] = 0x%x, Reg_d[%d] = 0x%x, m = %d, width = %d, Rd = %d, Rn = %d\n",
|
|
|
- // __FUNCTION__, __LINE__, Rn, data, Rd, state->Reg[Rd], m, width + 1, Rd, Rn);
|
|
|
- goto donext;
|
|
|
- }
|
|
|
- } // ubfx instr
|
|
|
- else if ((((int) BITS (21, 27)) == 0x3d) && (((int) BITS (4, 6)) == 0x5)) {
|
|
|
- int tmp = 0;
|
|
|
- Rd = BITS(12, 15);
|
|
|
- Rn = BITS(0, 3);
|
|
|
- lsb = BITS(7, 11);
|
|
|
- width = BITS(16, 20);
|
|
|
- if ((Rd == 15) || (Rn == 15)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- } else if ((lsb + width) < 32) {
|
|
|
- state->Reg[Rd] ^= state->Reg[Rd];
|
|
|
- data = state->Reg[Rn];
|
|
|
- tmp = (data << (32 - (lsb + width + 1)));
|
|
|
- state->Reg[Rd] = (tmp >> (32 - (lsb + width + 1)));
|
|
|
- //SKYEYE_LOG_IN_CLR(RED, "sbfx: In %s, line = %d, pc = 0x%x, instr = 0x%x,Rd = 0x%x, Rn = 0x%x, lsb = %d, width = %d, Rs[%d] = 0x%x, Rd[%d] = 0x%x\n",
|
|
|
- // __func__, __LINE__, pc, instr, Rd, Rn, lsb, width + 1, Rn, state->Reg[Rn], Rd, state->Reg[Rd]);
|
|
|
- goto donext;
|
|
|
- }
|
|
|
- } // sbfx instr
|
|
|
- else if ((((int)BITS(21, 27)) == 0x3e) && ((int)BITS(4, 6) == 0x1)) {
|
|
|
- //(ARMword)(instr<<(31-(n))) >> ((31-(n))+(m))
|
|
|
- unsigned msb ,tmp_rn, tmp_rd, dst;
|
|
|
- tmp_rd = tmp_rn = dst = 0;
|
|
|
- Rd = BITS(12, 15);
|
|
|
- Rn = BITS(0, 3);
|
|
|
- lsb = BITS(7, 11);
|
|
|
- msb = BITS(16, 20); //-V519
|
|
|
- if (Rd == 15) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- } else if (Rn == 15) {
|
|
|
- data = state->Reg[Rd];
|
|
|
- tmp_rd = ((ARMword)(data << (31 - lsb)) >> (31 - lsb));
|
|
|
- dst = ((data >> msb) << (msb - lsb));
|
|
|
- dst = (dst << lsb) | tmp_rd;
|
|
|
- goto donext;
|
|
|
- } // bfc instr
|
|
|
- else if (((msb >= lsb) && (msb < 32))) {
|
|
|
- data = state->Reg[Rn];
|
|
|
- tmp_rn = ((ARMword)(data << (31 - (msb - lsb))) >> (31 - (msb - lsb)));
|
|
|
- data = state->Reg[Rd];
|
|
|
- tmp_rd = ((ARMword)(data << (31 - lsb)) >> (31 - lsb));
|
|
|
- dst = ((data >> msb) << (msb - lsb)) | tmp_rn;
|
|
|
- dst = (dst << lsb) | tmp_rd;
|
|
|
- goto donext;
|
|
|
- } // bfi instr
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- switch ((int) BITS (20, 27)) {
|
|
|
- /* Data Processing Register RHS Instructions. */
|
|
|
-
|
|
|
- case 0x00: /* AND reg and MUL */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, no write-back, down, post indexed. */
|
|
|
- SHDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (BITS (4, 7) == 9) {
|
|
|
- /* MUL */
|
|
|
- rhs = state->Reg[MULRHSReg];
|
|
|
- //if (MULLHSReg == MULDESTReg) {
|
|
|
- if(0) { /* For armv6, the restriction is removed */
|
|
|
- UNDEF_MULDestEQOp1;
|
|
|
- state->Reg[MULDESTReg] = 0;
|
|
|
- } else if (MULDESTReg != 15)
|
|
|
- state->Reg[MULDESTReg] = state->Reg[MULLHSReg] * rhs;
|
|
|
- else
|
|
|
- UNDEF_MULPCDest;
|
|
|
-
|
|
|
- for (dest = 0, temp = 0; dest < 32;
|
|
|
- dest++)
|
|
|
- if (rhs & (1L << dest))
|
|
|
- temp = dest;
|
|
|
-
|
|
|
- /* Mult takes this many/2 I cycles. */
|
|
|
- ARMul_Icycles (state, ARMul_MultTable[temp], 0L);
|
|
|
- } else {
|
|
|
- /* AND reg. */
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS & rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x01: /* ANDS reg and MULS */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, no write-back, down, post indexed. */
|
|
|
- LHPOSTDOWN ();
|
|
|
- /* Fall through to rest of decoding. */
|
|
|
-#endif
|
|
|
- if (BITS (4, 7) == 9) {
|
|
|
- /* MULS */
|
|
|
- rhs = state->Reg[MULRHSReg];
|
|
|
-
|
|
|
- //if (MULLHSReg == MULDESTReg) {
|
|
|
- if(0) {
|
|
|
- printf("Something in %d line\n", __LINE__);
|
|
|
- UNDEF_WARNING;
|
|
|
- UNDEF_MULDestEQOp1;
|
|
|
- state->Reg[MULDESTReg] = 0;
|
|
|
- CLEARN;
|
|
|
- SETZ;
|
|
|
- } else if (MULDESTReg != 15) {
|
|
|
- dest = state->Reg[MULLHSReg] * rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- state->Reg[MULDESTReg] = dest;
|
|
|
- } else
|
|
|
- UNDEF_MULPCDest;
|
|
|
-
|
|
|
- for (dest = 0, temp = 0; dest < 32;
|
|
|
- dest++)
|
|
|
- if (rhs & (1L << dest))
|
|
|
- temp = dest;
|
|
|
-
|
|
|
- /* Mult takes this many/2 I cycles. */
|
|
|
- ARMul_Icycles (state, ARMul_MultTable[temp], 0L);
|
|
|
- } else {
|
|
|
- /* ANDS reg. */
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS & rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x02: /* EOR reg and MLA */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, write-back, down, post indexed. */
|
|
|
- SHDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (BITS (4, 7) == 9) { /* MLA */
|
|
|
- rhs = state->Reg[MULRHSReg];
|
|
|
-#if 0
|
|
|
- if (MULLHSReg == MULDESTReg) {
|
|
|
- UNDEF_MULDestEQOp1;
|
|
|
- state->Reg[MULDESTReg] = state->Reg[MULACCReg];
|
|
|
- } else if (MULDESTReg != 15) {
|
|
|
-#endif
|
|
|
- if (MULDESTReg != 15) {
|
|
|
- state->Reg[MULDESTReg] = state->Reg[MULLHSReg] * rhs + state->Reg[MULACCReg];
|
|
|
- } else
|
|
|
- UNDEF_MULPCDest;
|
|
|
-
|
|
|
- for (dest = 0, temp = 0; dest < 32;
|
|
|
- dest++)
|
|
|
- if (rhs & (1L << dest))
|
|
|
- temp = dest;
|
|
|
-
|
|
|
- /* Mult takes this many/2 I cycles. */
|
|
|
- ARMul_Icycles (state, ARMul_MultTable[temp], 0L);
|
|
|
- } else {
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS ^ rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x03: /* EORS reg and MLAS */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, write-back, down, post-indexed. */
|
|
|
- LHPOSTDOWN ();
|
|
|
- /* Fall through to rest of the decoding. */
|
|
|
-#endif
|
|
|
- if (BITS (4, 7) == 9) {
|
|
|
- /* MLAS */
|
|
|
- rhs = state->Reg[MULRHSReg];
|
|
|
- //if (MULLHSReg == MULDESTReg) {
|
|
|
- if (0) {
|
|
|
- UNDEF_MULDestEQOp1;
|
|
|
- dest = state->Reg[MULACCReg];
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- state->Reg[MULDESTReg] = dest;
|
|
|
- } else if (MULDESTReg != 15) {
|
|
|
- dest = state->Reg[MULLHSReg] * rhs + state->Reg[MULACCReg];
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- state->Reg[MULDESTReg] = dest;
|
|
|
- } else
|
|
|
- UNDEF_MULPCDest;
|
|
|
-
|
|
|
- for (dest = 0, temp = 0; dest < 32;
|
|
|
- dest++)
|
|
|
- if (rhs & (1L << dest))
|
|
|
- temp = dest;
|
|
|
-
|
|
|
- /* Mult takes this many/2 I cycles. */
|
|
|
- ARMul_Icycles (state, ARMul_MultTable[temp], 0L);
|
|
|
- } else {
|
|
|
- /* EORS Reg. */
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS ^ rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x04: /* SUB reg */
|
|
|
- // Signifies UMAAL
|
|
|
- if (state->is_v6 && BITS(4, 7) == 0x09) {
|
|
|
- if (handle_v6_insn(state, instr))
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, no write-back, down, post indexed. */
|
|
|
- SHDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS - rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x05: /* SUBS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, no write-back, down, post indexed. */
|
|
|
- LHPOSTDOWN ();
|
|
|
- /* Fall through to the rest of the instruction decoding. */
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs - rhs;
|
|
|
-
|
|
|
- if ((lhs >= rhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x06: /* RSB reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, write-back, down, post indexed. */
|
|
|
- SHDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = rhs - LHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x07: /* RSBS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, write-back, down, post indexed. */
|
|
|
- LHPOSTDOWN ();
|
|
|
- /* Fall through to remainder of instruction decoding. */
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = rhs - lhs;
|
|
|
-
|
|
|
- if ((rhs >= lhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, rhs, lhs, dest);
|
|
|
- ARMul_SubOverflow (state, rhs, lhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x08: /* ADD reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, no write-back, up, post indexed. */
|
|
|
- SHUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32 = 64 */
|
|
|
- ARMul_Icycles (state, Multiply64 (state, instr, LUNSIGNED, LDEFAULT), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS + rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x09: /* ADDS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, no write-back, up, post indexed. */
|
|
|
- LHPOSTUP ();
|
|
|
- /* Fall through to remaining instruction decoding. */
|
|
|
-#endif
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, Multiply64 (state, instr, LUNSIGNED, LSCC), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs + rhs;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0a: /* ADC reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, write-back, up, post-indexed. */
|
|
|
- SHUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, MultiplyAdd64 (state, instr, LUNSIGNED, LDEFAULT), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS + rhs + CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0b: /* ADCS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, write-back, up, post indexed. */
|
|
|
- LHPOSTUP ();
|
|
|
- /* Fall through to remaining instruction decoding. */
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, MultiplyAdd64 (state, instr, LUNSIGNED, LSCC), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs + rhs + CFLAG;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0c: /* SBC reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, no write-back, up post indexed. */
|
|
|
- SHUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, Multiply64 (state, instr, LSIGNED, LDEFAULT), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS - rhs - !CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0d: /* SBCS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, no write-back, up, post indexed. */
|
|
|
- LHPOSTUP ();
|
|
|
-
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, Multiply64 (state, instr, LSIGNED, LSCC), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs - rhs - !CFLAG;
|
|
|
- if ((lhs >= rhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0e: /* RSC reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, write-back, up, post indexed. */
|
|
|
- SHUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, MultiplyAdd64 (state, instr, LSIGNED, LDEFAULT), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = rhs - LHS - !CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x0f: /* RSCS reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, write-back, up, post indexed. */
|
|
|
- LHPOSTUP ();
|
|
|
- /* Fall through to remaining instruction decoding. */
|
|
|
-
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- /* MULL */
|
|
|
- /* 32x32=64 */
|
|
|
- ARMul_Icycles (state, MultiplyAdd64 (state, instr, LSIGNED, LSCC), 0L);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = rhs - lhs - !CFLAG;
|
|
|
-
|
|
|
- if ((rhs >= lhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, rhs, lhs, dest);
|
|
|
- ARMul_SubOverflow (state, rhs, lhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x10: /* TST reg and MRS CPSR and SWP word. */
|
|
|
- if (state->is_v5e) {
|
|
|
- if (BIT (4) == 0 && BIT (7) == 1) {
|
|
|
- /* ElSegundo SMLAxy insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (8, 11)];
|
|
|
- ARMword Rn = state->Reg[BITS (12, 15)];
|
|
|
-
|
|
|
- if (BIT (5))
|
|
|
- op1 >>= 16;
|
|
|
- if (BIT (6))
|
|
|
- op2 >>= 16;
|
|
|
- op1 &= 0xFFFF;
|
|
|
- op2 &= 0xFFFF;
|
|
|
- if (op1 & 0x8000)
|
|
|
- op1 -= 65536;
|
|
|
- if (op2 & 0x8000)
|
|
|
- op2 -= 65536;
|
|
|
- op1 *= op2;
|
|
|
- //printf("SMLA_INST:BB,op1=0x%x, op2=0x%x. Rn=0x%x\n", op1, op2, Rn);
|
|
|
- if (AddOverflow(op1, Rn, op1 + Rn))
|
|
|
- SETQ;
|
|
|
- state->Reg[BITS (16, 19)] = op1 + Rn;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 11) == 5) {
|
|
|
- /* ElSegundo QADD insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (16, 19)];
|
|
|
- ARMword result = op1 + op2;
|
|
|
- if (AddOverflow(op1, op2, result)) {
|
|
|
- result = POS (result) ? 0x80000000 : 0x7fffffff;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
- state->Reg[BITS (12, 15)] = result;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, no write-back, down, pre indexed. */
|
|
|
- SHPREDOWN ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (BITS (4, 11) == 9) {
|
|
|
- /* SWP */
|
|
|
- UNDEF_SWPPC;
|
|
|
- temp = LHS;
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (VECTORACCESS (temp) || ADDREXCEPT (temp)) {
|
|
|
- INTERNALABORT (temp);
|
|
|
- (void) ARMul_LoadWordN (state, temp);
|
|
|
- (void) ARMul_LoadWordN (state, temp);
|
|
|
- } else
|
|
|
-#endif
|
|
|
- dest = ARMul_SwapWord (state, temp, state->Reg[RHSReg]);
|
|
|
- if (temp & 3)
|
|
|
- DEST = ARMul_Align (state, temp, dest);
|
|
|
- else
|
|
|
- DEST = dest;
|
|
|
- if (state->abortSig || state->Aborted)
|
|
|
- TAKEABORT;
|
|
|
- } else if ((BITS (0, 11) == 0) && (LHSReg == 15)) { /* MRS CPSR */
|
|
|
- UNDEF_MRSPC;
|
|
|
- DEST = ARMul_GetCPSR(state);
|
|
|
- } else {
|
|
|
- UNDEF_Test;
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x11: /* TSTP reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, no write-back, down, pre indexed. */
|
|
|
- LHPREDOWN ();
|
|
|
- /* Continue with remaining instruction decode. */
|
|
|
-#endif
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* TSTP reg */
|
|
|
-#ifdef MODE32
|
|
|
- //chy 2006-02-15 if in user mode, can not set cpsr 0:23
|
|
|
- //from p165 of ARMARM book
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- rhs = DPRegRHS;
|
|
|
- temp = LHS & rhs;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- /* TST reg */
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS & rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x12: /* TEQ reg and MSR reg to CPSR (ARM6). */
|
|
|
-
|
|
|
- if (state->is_v5) {
|
|
|
- if (BITS (4, 7) == 3) {
|
|
|
- /* BLX(2) */
|
|
|
- ARMword temp;
|
|
|
-
|
|
|
- if (TFLAG)
|
|
|
- temp = (pc + 2) | 1;
|
|
|
- else
|
|
|
- temp = pc + 4;
|
|
|
-
|
|
|
- WriteR15Branch (state, state->Reg[RHSReg]);
|
|
|
- state->Reg[14] = temp;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (state->is_v5e) {
|
|
|
- if (BIT (4) == 0 && BIT (7) == 1 && (BIT (5) == 0 || BITS (12, 15) == 0)) {
|
|
|
- /* ElSegundo SMLAWy/SMULWy insn. */
|
|
|
- unsigned long long op1 = state->Reg[BITS (0, 3)];
|
|
|
- unsigned long long op2 = state->Reg[BITS (8, 11)];
|
|
|
- unsigned long long result;
|
|
|
-
|
|
|
- if (BIT (6))
|
|
|
- op2 >>= 16;
|
|
|
- if (op1 & 0x80000000)
|
|
|
- op1 -= 1ULL << 32;
|
|
|
- op2 &= 0xFFFF;
|
|
|
- if (op2 & 0x8000)
|
|
|
- op2 -= 65536;
|
|
|
- result = (op1 * op2) >> 16;
|
|
|
-
|
|
|
- if (BIT (5) == 0) {
|
|
|
- ARMword Rn = state->Reg[BITS(12, 15)];
|
|
|
-
|
|
|
- if (AddOverflow((ARMword)result, Rn, (ARMword)(result + Rn)))
|
|
|
- SETQ;
|
|
|
- result += Rn;
|
|
|
- }
|
|
|
- state->Reg[BITS (16, 19)] = (ARMword)result;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 11) == 5) {
|
|
|
- /* ElSegundo QSUB insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (16, 19)];
|
|
|
- ARMword result = op1 - op2;
|
|
|
-
|
|
|
- if (SubOverflow
|
|
|
- (op1, op2, result)) {
|
|
|
- result = POS (result) ? 0x80000000 : 0x7fffffff;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[BITS (12, 15)] = result;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, write-back, down, pre indexed. */
|
|
|
- SHPREDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 27) == 0x12FFF1) {
|
|
|
- /* BX */
|
|
|
- WriteR15Branch (state, state->Reg[RHSReg]);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (state->is_v5) {
|
|
|
- if (BITS (4, 7) == 0x7) {
|
|
|
- //ARMword value;
|
|
|
- //extern int SWI_vector_installed;
|
|
|
-
|
|
|
- /* Hardware is allowed to optionally override this
|
|
|
- instruction and treat it as a breakpoint. Since
|
|
|
- this is a simulator not hardware, we take the position
|
|
|
- that if a SWI vector was not installed, then an Abort
|
|
|
- vector was probably not installed either, and so
|
|
|
- normally this instruction would be ignored, even if an
|
|
|
- Abort is generated. This is a bad thing, since GDB
|
|
|
- uses this instruction for its breakpoints (at least in
|
|
|
- Thumb mode it does). So intercept the instruction here
|
|
|
- and generate a breakpoint SWI instead. */
|
|
|
- /* Force the next instruction to be refetched. */
|
|
|
- state->NextInstr = RESUME;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* MSR reg to CPSR. */
|
|
|
- UNDEF_MSRPC;
|
|
|
- temp = DPRegRHS;
|
|
|
-#ifdef MODET
|
|
|
- /* Don't allow TBIT to be set by MSR. */
|
|
|
- temp &= ~TBIT;
|
|
|
-#endif
|
|
|
- ARMul_FixCPSR (state, instr, temp);
|
|
|
- } else
|
|
|
- UNDEF_Test;
|
|
|
-
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x13: /* TEQP reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, write-back, down, pre indexed. */
|
|
|
- LHPREDOWNWB ();
|
|
|
- /* Continue with remaining instruction decode. */
|
|
|
-#endif
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* TEQP reg */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- rhs = DPRegRHS;
|
|
|
- temp = LHS ^ rhs;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- /* TEQ Reg. */
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS ^ rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x14: /* CMP reg and MRS SPSR and SWP byte. */
|
|
|
- if (state->is_v5e) {
|
|
|
- if (BIT (4) == 0 && BIT (7) == 1) {
|
|
|
- /* ElSegundo SMLALxy insn. */
|
|
|
- unsigned long long op1 = state->Reg[BITS (0, 3)];
|
|
|
- unsigned long long op2 = state->Reg[BITS (8, 11)];
|
|
|
- unsigned long long dest;
|
|
|
- //unsigned long long result;
|
|
|
-
|
|
|
- if (BIT (5))
|
|
|
- op1 >>= 16;
|
|
|
- if (BIT (6))
|
|
|
- op2 >>= 16;
|
|
|
- op1 &= 0xFFFF;
|
|
|
- if (op1 & 0x8000)
|
|
|
- op1 -= 65536;
|
|
|
- op2 &= 0xFFFF;
|
|
|
- if (op2 & 0x8000)
|
|
|
- op2 -= 65536;
|
|
|
-
|
|
|
- dest = (unsigned long long) state->Reg[BITS (16, 19)] << 32;
|
|
|
- dest |= state->Reg[BITS (12, 15)];
|
|
|
- dest += op1 * op2;
|
|
|
- state->Reg[BITS(12, 15)] = (ARMword)dest;
|
|
|
- state->Reg[BITS(16, 19)] = (ARMword)(dest >> 32);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 11) == 5) {
|
|
|
- /* ElSegundo QDADD insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (16, 19)];
|
|
|
- ARMword op2d = op2 + op2;
|
|
|
- ARMword result;
|
|
|
-
|
|
|
- if (AddOverflow
|
|
|
- (op2, op2, op2d)) {
|
|
|
- SETQ;
|
|
|
- op2d = POS (op2d) ? 0x80000000 : 0x7fffffff;
|
|
|
- }
|
|
|
-
|
|
|
- result = op1 + op2d;
|
|
|
- if (AddOverflow(op1, op2d, result)) {
|
|
|
- SETQ;
|
|
|
- result = POS (result) ? 0x80000000 : 0x7fffffff;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[BITS (12, 15)] = result;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, no write-back, down, pre indexed. */
|
|
|
- SHPREDOWN ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (BITS (4, 11) == 9) {
|
|
|
- /* SWP */
|
|
|
- UNDEF_SWPPC;
|
|
|
- temp = LHS;
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (VECTORACCESS (temp) || ADDREXCEPT (temp)) {
|
|
|
- INTERNALABORT (temp);
|
|
|
- (void) ARMul_LoadByte (state, temp);
|
|
|
- (void) ARMul_LoadByte (state, temp);
|
|
|
- } else
|
|
|
-#endif
|
|
|
- DEST = ARMul_SwapByte (state, temp, state->Reg[RHSReg]);
|
|
|
- if (state->abortSig || state->Aborted)
|
|
|
- TAKEABORT;
|
|
|
- } else if ((BITS (0, 11) == 0)
|
|
|
- && (LHSReg == 15)) {
|
|
|
- /* MRS SPSR */
|
|
|
- UNDEF_MRSPC;
|
|
|
- DEST = GETSPSR (state->Bank);
|
|
|
- } else
|
|
|
- UNDEF_Test;
|
|
|
-
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x15: /* CMPP reg. */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, no write-back, down, pre indexed. */
|
|
|
- LHPREDOWN ();
|
|
|
- /* Continue with remaining instruction decode. */
|
|
|
-#endif
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* CMPP reg. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- rhs = DPRegRHS;
|
|
|
- temp = LHS - rhs;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- /* CMP reg. */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs - rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- if ((lhs >= rhs)
|
|
|
- || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x16: /* CMN reg and MSR reg to SPSR */
|
|
|
- if (state->is_v5e) {
|
|
|
- if (BIT (4) == 0 && BIT (7) == 1 && BITS (12, 15) == 0) {
|
|
|
- /* ElSegundo SMULxy insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (8, 11)];
|
|
|
- ARMword Rn = state->Reg[BITS (12, 15)];
|
|
|
-
|
|
|
- if (BIT (5))
|
|
|
- op1 >>= 16;
|
|
|
- if (BIT (6))
|
|
|
- op2 >>= 16;
|
|
|
- op1 &= 0xFFFF;
|
|
|
- op2 &= 0xFFFF;
|
|
|
- if (op1 & 0x8000)
|
|
|
- op1 -= 65536;
|
|
|
- if (op2 & 0x8000)
|
|
|
- op2 -= 65536;
|
|
|
-
|
|
|
- state->Reg[BITS (16, 19)] = op1 * op2;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 11) == 5) {
|
|
|
- /* ElSegundo QDSUB insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- ARMword op2 = state->Reg[BITS (16, 19)];
|
|
|
- ARMword op2d = op2 + op2;
|
|
|
- ARMword result;
|
|
|
-
|
|
|
- if (AddOverflow(op2, op2, op2d)) {
|
|
|
- SETQ;
|
|
|
- op2d = POS (op2d) ? 0x80000000 : 0x7fffffff;
|
|
|
- }
|
|
|
-
|
|
|
- result = op1 - op2d;
|
|
|
- if (SubOverflow(op1, op2d, result)) {
|
|
|
- SETQ;
|
|
|
- result = POS (result) ? 0x80000000 : 0x7fffffff;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[BITS (12, 15)] = result;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (state->is_v5) {
|
|
|
- if (BITS (4, 11) == 0xF1
|
|
|
- && BITS (16, 19) == 0xF) {
|
|
|
- /* ARM5 CLZ insn. */
|
|
|
- ARMword op1 = state->Reg[BITS (0, 3)];
|
|
|
- int result = 32;
|
|
|
-
|
|
|
- if (op1)
|
|
|
- for (result = 0; (op1 & 0x80000000) == 0; op1 <<= 1)
|
|
|
- result++;
|
|
|
- state->Reg[BITS (12, 15)] = result;
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, write-back, down, pre indexed. */
|
|
|
- SHPREDOWNWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* MSR */
|
|
|
- UNDEF_MSRPC;
|
|
|
- /*ARMul_FixSPSR (state, instr,
|
|
|
- DPRegRHS);*/
|
|
|
- } else {
|
|
|
- UNDEF_Test;
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x17: /* CMNP reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, write-back, down, pre indexed. */
|
|
|
- LHPREDOWNWB ();
|
|
|
- /* Continue with remaining instruction decoding. */
|
|
|
-#endif
|
|
|
- if (DESTReg == 15) {
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- rhs = DPRegRHS;
|
|
|
- temp = LHS + rhs;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- break;
|
|
|
- } else {
|
|
|
- /* CMN reg. */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = lhs + rhs;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x18: /* ORR reg */
|
|
|
-#ifdef MODET
|
|
|
- /* dyf add armv6 instr strex 2010.9.17 */
|
|
|
- if (state->is_v6) {
|
|
|
- if (BITS (4, 7) == 0x9)
|
|
|
- if (handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, no write-back, up, pre indexed. */
|
|
|
- SHPREUP ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS | rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x19: /* ORRS reg */
|
|
|
-#ifdef MODET
|
|
|
- /* dyf add armv6 instr ldrex */
|
|
|
- if (state->is_v6) {
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- if (handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, no write-back, up, pre indexed. */
|
|
|
- LHPREUP ();
|
|
|
- /* Continue with remaining instruction decoding. */
|
|
|
-#endif
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS | rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1a: /* MOV reg */
|
|
|
-#ifdef MODET
|
|
|
- if (BITS (4, 11) == 0xB) {
|
|
|
- /* STRH register offset, write-back, up, pre indexed. */
|
|
|
- SHPREUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS(4, 11) == 0xF9) { //strexd
|
|
|
- u32 l = LHSReg;
|
|
|
-
|
|
|
- bool enter = false;
|
|
|
-
|
|
|
- if (state->currentexval == (u32)ARMul_ReadWord(state, state->currentexaddr)&&
|
|
|
- state->currentexvald == (u32)ARMul_ReadWord(state, state->currentexaddr + 4))
|
|
|
- enter = true;
|
|
|
-
|
|
|
- //todo bug this and STREXD and LDREXD http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360e/CHDGJGGC.html
|
|
|
-
|
|
|
- if (enter) {
|
|
|
- ARMul_StoreWordN(state, LHS, state->Reg[RHSReg]);
|
|
|
- ARMul_StoreWordN(state,LHS + 4 , state->Reg[RHSReg + 1]);
|
|
|
- state->Reg[DESTReg] = 0;
|
|
|
- } else {
|
|
|
- state->Reg[DESTReg] = 1;
|
|
|
- }
|
|
|
-
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- dest = DPRegRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1B: /* MOVS reg */
|
|
|
-#ifdef MODET
|
|
|
- /* ldrexd ichfly */
|
|
|
- if (BITS(0, 11) == 0xF9F) { //strexd
|
|
|
- lhs = LHS;
|
|
|
-
|
|
|
- state->currentexaddr = lhs;
|
|
|
- state->currentexval = (u32)ARMul_ReadWord(state, lhs);
|
|
|
- state->currentexvald = (u32)ARMul_ReadWord(state, lhs + 4);
|
|
|
-
|
|
|
- state->Reg[DESTReg] = ARMul_LoadWordN(state, lhs);
|
|
|
- state->Reg[DESTReg] = ARMul_LoadWordN(state, lhs + 4);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if ((BITS (4, 11) & 0xF9) == 0x9)
|
|
|
- /* LDR register offset, write-back, up, pre indexed. */
|
|
|
- LHPREUPWB ();
|
|
|
- /* Continue with remaining instruction decoding. */
|
|
|
-
|
|
|
-#endif
|
|
|
- dest = DPSRegRHS;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1c: /* BIC reg */
|
|
|
-#ifdef MODET
|
|
|
- /* dyf add for STREXB */
|
|
|
- if (state->is_v6) {
|
|
|
- if (BITS (4, 7) == 0x9) {
|
|
|
- if (handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, no write-back, up, pre indexed. */
|
|
|
- SHPREUP ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- } else if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- rhs = DPRegRHS;
|
|
|
- dest = LHS & ~rhs;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1d: /* BICS reg */
|
|
|
-#ifdef MODET
|
|
|
- /* ladsh P=1 U=1 W=0 L=1 S=1 H=1 */
|
|
|
- if (BITS(4, 7) == 0xF) {
|
|
|
- temp = LHS + GetLS7RHS (state, instr);
|
|
|
- LoadHalfWord (state, instr, temp, LSIGNED);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xb) {
|
|
|
- /* LDRH immediate offset, no write-back, up, pre indexed. */
|
|
|
- temp = LHS + GetLS7RHS (state, instr);
|
|
|
- LoadHalfWord (state, instr, temp, LUNSIGNED);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xd) {
|
|
|
- // alex-ykl fix: 2011-07-20 missing ldrsb instruction
|
|
|
- temp = LHS + GetLS7RHS (state, instr);
|
|
|
- LoadByte (state, instr, temp, LSIGNED);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- /* Continue with instruction decoding. */
|
|
|
- /*if ((BITS (4, 7) & 0x9) == 0x9) */
|
|
|
- if ((BITS (4, 7)) == 0x9) {
|
|
|
- /* ldrexb */
|
|
|
- if (state->is_v6) {
|
|
|
- if (handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
- }
|
|
|
- /* LDR immediate offset, no write-back, up, pre indexed. */
|
|
|
- LHPREUP ();
|
|
|
- }
|
|
|
-
|
|
|
-#endif
|
|
|
- rhs = DPSRegRHS;
|
|
|
- dest = LHS & ~rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1e: /* MVN reg */
|
|
|
-#ifdef MODET
|
|
|
- if ((instr & 0x00000FF0) == 0x00000F90) { //if ((instr & 0x0FF00FF0) == 0x01e00f90) { //todo make that better ichfly
|
|
|
- /* strexh ichfly */
|
|
|
- u32 l = LHSReg;
|
|
|
- u32 r = RHSReg;
|
|
|
- lhs = LHS;
|
|
|
-
|
|
|
- bool enter = false;
|
|
|
-
|
|
|
- if (state->currentexval == (u32)ARMul_LoadHalfWord(state, state->currentexaddr))enter = true;
|
|
|
-
|
|
|
- //StoreWord(state, lhs, RHS)
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
- if (enter) {
|
|
|
- ARMul_StoreHalfWord(state, lhs, RHS);
|
|
|
- state->Reg[DESTReg] = 0;
|
|
|
- } else {
|
|
|
- state->Reg[DESTReg] = 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xB) {
|
|
|
- /* STRH immediate offset, write-back, up, pre indexed. */
|
|
|
- SHPREUPWB ();
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xD) {
|
|
|
- Handle_Load_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- if (BITS (4, 7) == 0xF) {
|
|
|
- Handle_Store_Double (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
-#endif
|
|
|
- dest = ~DPRegRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x1f: /* MVNS reg */
|
|
|
-#ifdef MODET
|
|
|
-
|
|
|
- if ((instr & 0x00000FF0) == 0x00000F90) { //(instr & 0x0FF00FF0) == 0x01f00f90)//if ((instr & 0x0FF00FF0) == 0x01f00f90) {
|
|
|
- /* ldrexh ichfly */
|
|
|
- lhs = LHS;
|
|
|
-
|
|
|
- state->currentexaddr = lhs;
|
|
|
- state->currentexval = (u32)ARMul_LoadHalfWord(state, lhs);
|
|
|
-
|
|
|
- LoadHalfWord(state, instr, lhs,0);
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if ((BITS (4, 7) & 0x9) == 0x9)
|
|
|
- /* LDR immediate offset, write-back, up, pre indexed. */
|
|
|
- LHPREUPWB ();
|
|
|
- /* Continue instruction decoding. */
|
|
|
-#endif
|
|
|
- dest = ~DPSRegRHS;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- /* Data Processing Immediate RHS Instructions. */
|
|
|
-
|
|
|
- case 0x20: /* AND immed */
|
|
|
- dest = LHS & DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x21: /* ANDS immed */
|
|
|
- DPSImmRHS;
|
|
|
- dest = LHS & rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x22: /* EOR immed */
|
|
|
- dest = LHS ^ DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x23: /* EORS immed */
|
|
|
- DPSImmRHS;
|
|
|
- dest = LHS ^ rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x24: /* SUB immed */
|
|
|
- dest = LHS - DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x25: /* SUBS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs - rhs;
|
|
|
-
|
|
|
- if ((lhs >= rhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x26: /* RSB immed */
|
|
|
- dest = DPImmRHS - LHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x27: /* RSBS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = rhs - lhs;
|
|
|
-
|
|
|
- if ((rhs >= lhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, rhs, lhs, dest);
|
|
|
- ARMul_SubOverflow (state, rhs, lhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x28: /* ADD immed */
|
|
|
- dest = LHS + DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x29: /* ADDS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs + rhs;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
-
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2a: /* ADC immed */
|
|
|
- dest = LHS + DPImmRHS + CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2b: /* ADCS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs + rhs + CFLAG;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2c: /* SBC immed */
|
|
|
- dest = LHS - DPImmRHS - !CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2d: /* SBCS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs - rhs - !CFLAG;
|
|
|
- if ((lhs >= rhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2e: /* RSC immed */
|
|
|
- dest = DPImmRHS - LHS - !CFLAG;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x2f: /* RSCS immed */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = rhs - lhs - !CFLAG;
|
|
|
- if ((rhs >= lhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, rhs, lhs, dest);
|
|
|
- ARMul_SubOverflow (state, rhs, lhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x30: /* TST immed */
|
|
|
- /* shenoubang 2012-3-14*/
|
|
|
- if (state->is_v6) { /* movw, ARMV6, ARMv7 */
|
|
|
- dest ^= dest;
|
|
|
- dest = BITS(16, 19);
|
|
|
- dest = ((dest<<12) | BITS(0, 11));
|
|
|
- WRITEDEST(dest);
|
|
|
- break;
|
|
|
- } else {
|
|
|
- UNDEF_Test;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- case 0x31: /* TSTP immed */
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* TSTP immed. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- temp = LHS & DPImmRHS;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- /* TST immed. */
|
|
|
- DPSImmRHS;
|
|
|
- dest = LHS & rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x32: /* TEQ immed and MSR immed to CPSR */
|
|
|
- if (DESTReg == 15)
|
|
|
- /* MSR immed to CPSR. */
|
|
|
- ARMul_FixCPSR (state, instr,
|
|
|
- DPImmRHS);
|
|
|
- else
|
|
|
- UNDEF_Test;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x33: /* TEQP immed */
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* TEQP immed. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- temp = LHS ^ DPImmRHS;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- } else {
|
|
|
- DPSImmRHS; /* TEQ immed */
|
|
|
- dest = LHS ^ rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x34: /* CMP immed */
|
|
|
- UNDEF_Test;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x35: /* CMPP immed */
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* CMPP immed. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- temp = LHS - DPImmRHS;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- break;
|
|
|
- } else {
|
|
|
- /* CMP immed. */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs - rhs;
|
|
|
- ARMul_NegZero (state, dest);
|
|
|
-
|
|
|
- if ((lhs >= rhs) || ((rhs | lhs) >> 31)) {
|
|
|
- ARMul_SubCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_SubOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x36: /* CMN immed and MSR immed to SPSR */
|
|
|
- //if (DESTReg == 15)
|
|
|
- /*ARMul0_FixSPSR (state, instr,
|
|
|
- DPImmRHS);*/
|
|
|
- //else
|
|
|
- UNDEF_Test;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x37: /* CMNP immed. */
|
|
|
- if (DESTReg == 15) {
|
|
|
- /* CMNP immed. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
-#else
|
|
|
- temp = LHS + DPImmRHS;
|
|
|
- SETR15PSR (temp);
|
|
|
-#endif
|
|
|
- break;
|
|
|
- } else {
|
|
|
- /* CMN immed. */
|
|
|
- lhs = LHS;
|
|
|
- rhs = DPImmRHS;
|
|
|
- dest = lhs + rhs;
|
|
|
- ASSIGNZ (dest == 0);
|
|
|
- if ((lhs | rhs) >> 30) {
|
|
|
- /* Possible C,V,N to set. */
|
|
|
- ASSIGNN (NEG (dest));
|
|
|
- ARMul_AddCarry (state, lhs, rhs, dest);
|
|
|
- ARMul_AddOverflow (state, lhs, rhs, dest);
|
|
|
- } else {
|
|
|
- CLEARN;
|
|
|
- CLEARC;
|
|
|
- CLEARV;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x38: /* ORR immed. */
|
|
|
- dest = LHS | DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x39: /* ORRS immed. */
|
|
|
- DPSImmRHS;
|
|
|
- dest = LHS | rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3a: /* MOV immed. */
|
|
|
- dest = DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3b: /* MOVS immed. */
|
|
|
- DPSImmRHS;
|
|
|
- WRITESDEST (rhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3c: /* BIC immed. */
|
|
|
- dest = LHS & ~DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3d: /* BICS immed. */
|
|
|
- DPSImmRHS;
|
|
|
- dest = LHS & ~rhs;
|
|
|
- WRITESDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3e: /* MVN immed. */
|
|
|
- dest = ~DPImmRHS;
|
|
|
- WRITEDEST (dest);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x3f: /* MVNS immed. */
|
|
|
- DPSImmRHS;
|
|
|
- WRITESDEST (~rhs);
|
|
|
- break;
|
|
|
-
|
|
|
- /* Single Data Transfer Immediate RHS Instructions. */
|
|
|
-
|
|
|
- case 0x40: /* Store Word, No WriteBack, Post Dec, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x41: /* Load Word, No WriteBack, Post Dec, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x42: /* Store Word, WriteBack, Post Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs - LSImmRHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = temp;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x43: /* Load Word, WriteBack, Post Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x44: /* Store Byte, No WriteBack, Post Dec, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x45: /* Load Byte, No WriteBack, Post Dec, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x46: /* Store Byte, WriteBack, Post Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x47: /* Load Byte, WriteBack, Post Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = lhs - LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x48: /* Store Word, No WriteBack, Post Inc, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x49: /* Load Word, No WriteBack, Post Inc, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4a: /* Store Word, WriteBack, Post Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4b: /* Load Word, WriteBack, Post Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4c: /* Store Byte, No WriteBack, Post Inc, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4d: /* Load Byte, No WriteBack, Post Inc, Immed. */
|
|
|
- lhs = LHS;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4e: /* Store Byte, WriteBack, Post Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x4f: /* Load Byte, WriteBack, Post Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = lhs + LSImmRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x50: /* Store Word, No WriteBack, Pre Dec, Immed. */
|
|
|
- (void) StoreWord (state, instr, LHS - LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x51: /* Load Word, No WriteBack, Pre Dec, Immed. */
|
|
|
- (void) LoadWord (state, instr, LHS - LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x52: /* Store Word, WriteBack, Pre Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS - LSImmRHS;
|
|
|
- if (StoreWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x53: /* Load Word, WriteBack, Pre Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS - LSImmRHS;
|
|
|
- if (LoadWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x54: /* Store Byte, No WriteBack, Pre Dec, Immed. */
|
|
|
- (void) StoreByte (state, instr, LHS - LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x55: /* Load Byte, No WriteBack, Pre Dec, Immed. */
|
|
|
- (void) LoadByte (state, instr, LHS - LSImmRHS, LUNSIGNED);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x56: /* Store Byte, WriteBack, Pre Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS - LSImmRHS;
|
|
|
- if (StoreByte (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x57: /* Load Byte, WriteBack, Pre Dec, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS - LSImmRHS;
|
|
|
- if (LoadByte (state, instr, temp, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x58: /* Store Word, No WriteBack, Pre Inc, Immed. */
|
|
|
- (void) StoreWord (state, instr, LHS + LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x59: /* Load Word, No WriteBack, Pre Inc, Immed. */
|
|
|
- (void) LoadWord (state, instr, LHS + LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5a: /* Store Word, WriteBack, Pre Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS + LSImmRHS;
|
|
|
- if (StoreWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5b: /* Load Word, WriteBack, Pre Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS + LSImmRHS;
|
|
|
- if (LoadWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5c: /* Store Byte, No WriteBack, Pre Inc, Immed. */
|
|
|
- (void) StoreByte (state, instr, LHS + LSImmRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5d: /* Load Byte, No WriteBack, Pre Inc, Immed. */
|
|
|
- (void) LoadByte (state, instr, LHS + LSImmRHS, LUNSIGNED);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5e: /* Store Byte, WriteBack, Pre Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS + LSImmRHS;
|
|
|
- if (StoreByte (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x5f: /* Load Byte, WriteBack, Pre Inc, Immed. */
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- temp = LHS + LSImmRHS;
|
|
|
- if (LoadByte (state, instr, temp, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Single Data Transfer Register RHS Instructions. */
|
|
|
-
|
|
|
- case 0x60: /* Store Word, No WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs - LSRegRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x61: /* Load Word, No WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs - LSRegRHS;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x62: /* Store Word, WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs - LSRegRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x63: /* Load Word, WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs - LSRegRHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = temp;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x64: /* Store Byte, No WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs - LSRegRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x65: /* Load Byte, No WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs - LSRegRHS;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x66: /* Store Byte, WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs - LSRegRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x67: /* Load Byte, WriteBack, Post Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs - LSRegRHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x68: /* Store Word, No WriteBack, Post Inc, Reg. */
|
|
|
- if ((instr & 0x70) == 0x10) { //pkhbt
|
|
|
- u8 idest = BITS(12, 15);
|
|
|
- u8 rfis = BITS(16, 19);
|
|
|
- u8 rlast = BITS(0, 3);
|
|
|
- u8 ishi = BITS(7,11);
|
|
|
- state->Reg[idest] = (state->Reg[rfis] & 0xFFFF) | ((state->Reg[rlast] << ishi) & 0xFFFF0000);
|
|
|
- break;
|
|
|
- } else if ((instr & 0x70) == 0x50) { //pkhtb
|
|
|
- u8 rd_idx = BITS(12, 15);
|
|
|
- u8 rn_idx = BITS(16, 19);
|
|
|
- u8 rm_idx = BITS(0, 3);
|
|
|
- u8 imm5 = BITS(7, 11) ? BITS(7, 11) : 31;
|
|
|
- state->Reg[rd_idx] = ((static_cast<s32>(state->Reg[rm_idx]) >> imm5) & 0xFFFF) | ((state->Reg[rn_idx]) & 0xFFFF0000);
|
|
|
- break;
|
|
|
- } else if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSRegRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x69: /* Load Word, No WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs + LSRegRHS;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6a: /* Store Word, WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreWord (state, instr, lhs))
|
|
|
- LSBase = lhs + LSRegRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6b: /* Load Word, WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs + LSRegRHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadWord (state, instr, lhs))
|
|
|
- LSBase = temp;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6c: /* Store Byte, No WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs + LSRegRHS;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6d: /* Load Byte, No WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs + LSRegRHS;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6e: /* Store Byte, WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (StoreByte (state, instr, lhs))
|
|
|
- LSBase = lhs + LSRegRHS;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6f: /* Load Byte, WriteBack, Post Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6
|
|
|
- && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- lhs = LHS;
|
|
|
- temp = lhs + LSRegRHS;
|
|
|
- state->NtransSig = LOW;
|
|
|
- if (LoadByte (state, instr, lhs, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- state->NtransSig = (state->Mode & 3) ? HIGH : LOW;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x70: /* Store Word, No WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) StoreWord (state, instr, LHS - LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x71: /* Load Word, No WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) LoadWord (state, instr, LHS - LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x72: /* Store Word, WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS - LSRegRHS;
|
|
|
- if (StoreWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x73: /* Load Word, WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS - LSRegRHS;
|
|
|
- if (LoadWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x74: /* Store Byte, No WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) StoreByte (state, instr, LHS - LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x75: /* Load Byte, No WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) LoadByte (state, instr, LHS - LSRegRHS, LUNSIGNED);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x76: /* Store Byte, WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS - LSRegRHS;
|
|
|
- if (StoreByte (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x77: /* Load Byte, WriteBack, Pre Dec, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS - LSRegRHS;
|
|
|
- if (LoadByte (state, instr, temp, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x78: /* Store Word, No WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) StoreWord (state, instr, LHS + LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x79: /* Load Word, No WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) LoadWord (state, instr, LHS + LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7a: /* Store Word, WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS + LSRegRHS;
|
|
|
- if (StoreWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7b: /* Load Word, WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS + LSRegRHS;
|
|
|
- if (LoadWord (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7c: /* Store Byte, No WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->is_v6 && handle_v6_insn (state, instr))
|
|
|
- break;
|
|
|
-#endif
|
|
|
-
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) StoreByte (state, instr, LHS + LSRegRHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7d: /* Load Byte, No WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- (void) LoadByte (state, instr, LHS + LSRegRHS, LUNSIGNED);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7e: /* Store Byte, WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS + LSRegRHS;
|
|
|
- if (StoreByte (state, instr, temp))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x7f: /* Load Byte, WriteBack, Pre Inc, Reg. */
|
|
|
- if (BIT (4)) {
|
|
|
- LOG_DEBUG(Core_ARM11, "got unhandled special breakpoint");
|
|
|
- return 1;
|
|
|
- }
|
|
|
- UNDEF_LSRBaseEQOffWb;
|
|
|
- UNDEF_LSRBaseEQDestWb;
|
|
|
- UNDEF_LSRPCBaseWb;
|
|
|
- UNDEF_LSRPCOffWb;
|
|
|
- temp = LHS + LSRegRHS;
|
|
|
- if (LoadByte (state, instr, temp, LUNSIGNED))
|
|
|
- LSBase = temp;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Multiple Data Transfer Instructions. */
|
|
|
-
|
|
|
- case 0x80: /* Store, No WriteBack, Post Dec. */
|
|
|
- STOREMULT (instr, LSBase - LSMNumRegs + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x81: /* Load, No WriteBack, Post Dec. */
|
|
|
- LOADMULT (instr, LSBase - LSMNumRegs + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x82: /* Store, WriteBack, Post Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- STOREMULT (instr, temp + 4L, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x83: /* Load, WriteBack, Post Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- LOADMULT (instr, temp + 4L, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x84: /* Store, Flags, No WriteBack, Post Dec. */
|
|
|
- STORESMULT (instr, LSBase - LSMNumRegs + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x85: /* Load, Flags, No WriteBack, Post Dec. */
|
|
|
- LOADSMULT (instr, LSBase - LSMNumRegs + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x86: /* Store, Flags, WriteBack, Post Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- STORESMULT (instr, temp + 4L, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x87: /* Load, Flags, WriteBack, Post Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- LOADSMULT (instr, temp + 4L, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x88: /* Store, No WriteBack, Post Inc. */
|
|
|
- STOREMULT (instr, LSBase, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x89: /* Load, No WriteBack, Post Inc. */
|
|
|
- LOADMULT (instr, LSBase, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8a: /* Store, WriteBack, Post Inc. */
|
|
|
- temp = LSBase;
|
|
|
- STOREMULT (instr, temp, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8b: /* Load, WriteBack, Post Inc. */
|
|
|
- temp = LSBase;
|
|
|
- LOADMULT (instr, temp, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8c: /* Store, Flags, No WriteBack, Post Inc. */
|
|
|
- STORESMULT (instr, LSBase, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8d: /* Load, Flags, No WriteBack, Post Inc. */
|
|
|
- LOADSMULT (instr, LSBase, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8e: /* Store, Flags, WriteBack, Post Inc. */
|
|
|
- temp = LSBase;
|
|
|
- STORESMULT (instr, temp, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x8f: /* Load, Flags, WriteBack, Post Inc. */
|
|
|
- temp = LSBase;
|
|
|
- LOADSMULT (instr, temp, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x90: /* Store, No WriteBack, Pre Dec. */
|
|
|
- STOREMULT (instr, LSBase - LSMNumRegs, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x91: /* Load, No WriteBack, Pre Dec. */
|
|
|
- LOADMULT (instr, LSBase - LSMNumRegs, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x92: /* Store, WriteBack, Pre Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- STOREMULT (instr, temp, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x93: /* Load, WriteBack, Pre Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- LOADMULT (instr, temp, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x94: /* Store, Flags, No WriteBack, Pre Dec. */
|
|
|
- STORESMULT (instr, LSBase - LSMNumRegs, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x95: /* Load, Flags, No WriteBack, Pre Dec. */
|
|
|
- LOADSMULT (instr, LSBase - LSMNumRegs, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x96: /* Store, Flags, WriteBack, Pre Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- STORESMULT (instr, temp, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x97: /* Load, Flags, WriteBack, Pre Dec. */
|
|
|
- temp = LSBase - LSMNumRegs;
|
|
|
- LOADSMULT (instr, temp, temp);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x98: /* Store, No WriteBack, Pre Inc. */
|
|
|
- STOREMULT (instr, LSBase + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x99: /* Load, No WriteBack, Pre Inc. */
|
|
|
- LOADMULT (instr, LSBase + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9a: /* Store, WriteBack, Pre Inc. */
|
|
|
- temp = LSBase;
|
|
|
- STOREMULT (instr, temp + 4L, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9b: /* Load, WriteBack, Pre Inc. */
|
|
|
- temp = LSBase;
|
|
|
- LOADMULT (instr, temp + 4L, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9c: /* Store, Flags, No WriteBack, Pre Inc. */
|
|
|
- STORESMULT (instr, LSBase + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9d: /* Load, Flags, No WriteBack, Pre Inc. */
|
|
|
- LOADSMULT (instr, LSBase + 4L, 0L);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9e: /* Store, Flags, WriteBack, Pre Inc. */
|
|
|
- temp = LSBase;
|
|
|
- STORESMULT (instr, temp + 4L, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x9f: /* Load, Flags, WriteBack, Pre Inc. */
|
|
|
- temp = LSBase;
|
|
|
- LOADSMULT (instr, temp + 4L, temp + LSMNumRegs);
|
|
|
- break;
|
|
|
-
|
|
|
- /* Branch forward. */
|
|
|
- case 0xa0:
|
|
|
- case 0xa1:
|
|
|
- case 0xa2:
|
|
|
- case 0xa3:
|
|
|
- case 0xa4:
|
|
|
- case 0xa5:
|
|
|
- case 0xa6:
|
|
|
- case 0xa7:
|
|
|
- state->Reg[15] = pc + 8 + POSBRANCH;
|
|
|
- FLUSHPIPE;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Branch backward. */
|
|
|
- case 0xa8:
|
|
|
- case 0xa9:
|
|
|
- case 0xaa:
|
|
|
- case 0xab:
|
|
|
- case 0xac:
|
|
|
- case 0xad:
|
|
|
- case 0xae:
|
|
|
- case 0xaf:
|
|
|
- state->Reg[15] = pc + 8 + NEGBRANCH;
|
|
|
- FLUSHPIPE;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Branch and Link forward. */
|
|
|
- case 0xb0:
|
|
|
- case 0xb1:
|
|
|
- case 0xb2:
|
|
|
- case 0xb3:
|
|
|
- case 0xb4:
|
|
|
- case 0xb5:
|
|
|
- case 0xb6:
|
|
|
- case 0xb7:
|
|
|
-
|
|
|
- /* Put PC into Link. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Reg[14] = pc + 4;
|
|
|
-#else
|
|
|
- state->Reg[14] = (pc + 4) | ECC | ER15INT | EMODE;
|
|
|
-#endif
|
|
|
- state->Reg[15] = pc + 8 + POSBRANCH;
|
|
|
- FLUSHPIPE;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Branch and Link backward. */
|
|
|
- case 0xb8:
|
|
|
- case 0xb9:
|
|
|
- case 0xba:
|
|
|
- case 0xbb:
|
|
|
- case 0xbc:
|
|
|
- case 0xbd:
|
|
|
- case 0xbe:
|
|
|
- case 0xbf:
|
|
|
- /* Put PC into Link. */
|
|
|
-#ifdef MODE32
|
|
|
- state->Reg[14] = pc + 4;
|
|
|
-#else
|
|
|
- state->Reg[14] = (pc + 4) | ECC | ER15INT | EMODE;
|
|
|
-#endif
|
|
|
- state->Reg[15] = pc + 8 + NEGBRANCH;
|
|
|
- FLUSHPIPE;
|
|
|
- break;
|
|
|
-
|
|
|
- /* Co-Processor Data Transfers. */
|
|
|
- case 0xc4:
|
|
|
- if ((instr & 0x0FF00FF0) == 0xC400B10) { //vmov BIT(0-3), BIT(12-15), BIT(16-20), vmov d0, r0, r0
|
|
|
- state->ExtReg[BITS(0, 3) << 1] = state->Reg[BITS(12, 15)];
|
|
|
- state->ExtReg[(BITS(0, 3) << 1) + 1] = state->Reg[BITS(16, 20)];
|
|
|
- break;
|
|
|
- } else if (state->is_v5) {
|
|
|
- /* Reading from R15 is UNPREDICTABLE. */
|
|
|
- if (BITS (12, 15) == 15 || BITS (16, 19) == 15)
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- /* Is access to coprocessor 0 allowed ? */
|
|
|
- else if (!CP_ACCESS_ALLOWED(state, CPNum))
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- else {
|
|
|
- /* MCRR, ARMv5TE and up */
|
|
|
- ARMul_MCRR (state, instr, DEST, state->Reg[LHSReg]);
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- /* Drop through. */
|
|
|
-
|
|
|
- case 0xc0: /* Store , No WriteBack , Post Dec. */
|
|
|
- ARMul_STC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xc5:
|
|
|
- if ((instr & 0x00000FF0) == 0xB10) { //vmov BIT(12-15), BIT(16-20), BIT(0-3) vmov r0, r0, d0
|
|
|
- state->Reg[BITS(12, 15)] = state->ExtReg[BITS(0, 3) << 1];
|
|
|
- state->Reg[BITS(16, 19)] = state->ExtReg[(BITS(0, 3) << 1) + 1];
|
|
|
- break;
|
|
|
- } else if (state->is_v5) {
|
|
|
- /* Writes to R15 are UNPREDICATABLE. */
|
|
|
- if (DESTReg == 15 || LHSReg == 15)
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- /* Is access to the coprocessor allowed ? */
|
|
|
- else if (!CP_ACCESS_ALLOWED(state, CPNum)) {
|
|
|
- ARMul_UndefInstr(state, instr);
|
|
|
- } else {
|
|
|
- /* MRRC, ARMv5TE and up */
|
|
|
- ARMul_MRRC (state, instr, &DEST, &(state->Reg[LHSReg]));
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- /* Drop through. */
|
|
|
-
|
|
|
- case 0xc1: /* Load , No WriteBack , Post Dec. */
|
|
|
- ARMul_LDC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xc2:
|
|
|
- case 0xc6: /* Store , WriteBack , Post Dec. */
|
|
|
- lhs = LHS;
|
|
|
- state->Base = lhs - LSCOff;
|
|
|
- ARMul_STC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xc3:
|
|
|
- case 0xc7: /* Load , WriteBack , Post Dec. */
|
|
|
- lhs = LHS;
|
|
|
- state->Base = lhs - LSCOff;
|
|
|
- ARMul_LDC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xc8:
|
|
|
- case 0xcc: /* Store , No WriteBack , Post Inc. */
|
|
|
- ARMul_STC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xc9:
|
|
|
- case 0xcd: /* Load , No WriteBack , Post Inc. */
|
|
|
- ARMul_LDC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xca:
|
|
|
- case 0xce: /* Store , WriteBack , Post Inc. */
|
|
|
- lhs = LHS;
|
|
|
- state->Base = lhs + LSCOff;
|
|
|
- ARMul_STC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xcb:
|
|
|
- case 0xcf: /* Load , WriteBack , Post Inc. */
|
|
|
- lhs = LHS;
|
|
|
- state->Base = lhs + LSCOff;
|
|
|
- ARMul_LDC (state, instr, LHS);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd0:
|
|
|
- case 0xd4: /* Store , No WriteBack , Pre Dec. */
|
|
|
- ARMul_STC (state, instr, LHS - LSCOff);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd1:
|
|
|
- case 0xd5: /* Load , No WriteBack , Pre Dec. */
|
|
|
- ARMul_LDC (state, instr, LHS - LSCOff);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd2:
|
|
|
- case 0xd6: /* Store , WriteBack , Pre Dec. */
|
|
|
- lhs = LHS - LSCOff;
|
|
|
- state->Base = lhs;
|
|
|
- ARMul_STC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd3:
|
|
|
- case 0xd7: /* Load , WriteBack , Pre Dec. */
|
|
|
- lhs = LHS - LSCOff;
|
|
|
- state->Base = lhs;
|
|
|
- ARMul_LDC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd8:
|
|
|
- case 0xdc: /* Store , No WriteBack , Pre Inc. */
|
|
|
- ARMul_STC (state, instr, LHS + LSCOff);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xd9:
|
|
|
- case 0xdd: /* Load , No WriteBack , Pre Inc. */
|
|
|
- ARMul_LDC (state, instr, LHS + LSCOff);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xda:
|
|
|
- case 0xde: /* Store , WriteBack , Pre Inc. */
|
|
|
- lhs = LHS + LSCOff;
|
|
|
- state->Base = lhs;
|
|
|
- ARMul_STC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- case 0xdb:
|
|
|
- case 0xdf: /* Load , WriteBack , Pre Inc. */
|
|
|
- lhs = LHS + LSCOff;
|
|
|
- state->Base = lhs;
|
|
|
- ARMul_LDC (state, instr, lhs);
|
|
|
- break;
|
|
|
-
|
|
|
- /* Co-Processor Register Transfers (MCR) and Data Ops. */
|
|
|
-
|
|
|
- case 0xe2:
|
|
|
- /*if (!CP_ACCESS_ALLOWED (state, CPNum)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- break;
|
|
|
- }*/
|
|
|
-
|
|
|
- case 0xe0:
|
|
|
- case 0xe4:
|
|
|
- case 0xe6:
|
|
|
- case 0xe8:
|
|
|
- case 0xea:
|
|
|
- case 0xec:
|
|
|
- case 0xee:
|
|
|
- if (BIT (4)) {
|
|
|
- /* MCR. */
|
|
|
- if (DESTReg == 15) {
|
|
|
- UNDEF_MCRPC;
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_MCR (state, instr, state->Reg[15] + isize);
|
|
|
-#else
|
|
|
- ARMul_MCR (state, instr, ECC | ER15INT | EMODE | ((state->Reg[15] + isize) & R15PCBITS));
|
|
|
-#endif
|
|
|
- } else
|
|
|
- ARMul_MCR (state, instr, DEST);
|
|
|
- } else
|
|
|
- /* CDP Part 1. */
|
|
|
- ARMul_CDP (state, instr);
|
|
|
- break;
|
|
|
-
|
|
|
- /* Co-Processor Register Transfers (MRC) and Data Ops. */
|
|
|
- case 0xe1:
|
|
|
- case 0xe3:
|
|
|
- case 0xe5:
|
|
|
- case 0xe7:
|
|
|
- case 0xe9:
|
|
|
- case 0xeb:
|
|
|
- case 0xed:
|
|
|
- case 0xef:
|
|
|
- if (BIT (4)) {
|
|
|
- /* MRC */
|
|
|
- temp = ARMul_MRC (state, instr);
|
|
|
- if (DESTReg == 15) {
|
|
|
- ASSIGNN ((temp & NBIT) != 0);
|
|
|
- ASSIGNZ ((temp & ZBIT) != 0);
|
|
|
- ASSIGNC ((temp & CBIT) != 0);
|
|
|
- ASSIGNV ((temp & VBIT) != 0);
|
|
|
- } else
|
|
|
- DEST = temp;
|
|
|
- } else
|
|
|
- /* CDP Part 2. */
|
|
|
- ARMul_CDP (state, instr);
|
|
|
- break;
|
|
|
-
|
|
|
- /* SWI instruction. */
|
|
|
- case 0xf0:
|
|
|
- case 0xf1:
|
|
|
- case 0xf2:
|
|
|
- case 0xf3:
|
|
|
- case 0xf4:
|
|
|
- case 0xf5:
|
|
|
- case 0xf6:
|
|
|
- case 0xf7:
|
|
|
- case 0xf8:
|
|
|
- case 0xf9:
|
|
|
- case 0xfa:
|
|
|
- case 0xfb:
|
|
|
- case 0xfc:
|
|
|
- case 0xfd:
|
|
|
- case 0xfe:
|
|
|
- case 0xff:
|
|
|
- //svc_Execute(state, BITS(0, 23));
|
|
|
- HLE::CallSVC(instr);
|
|
|
-
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
-donext:
|
|
|
-#endif
|
|
|
- state->pc = pc;
|
|
|
-
|
|
|
- /* jump out every time */
|
|
|
- //state->EndCondition = 0;
|
|
|
- //state->Emulate = STOP;
|
|
|
-//chy 2006-04-12 for ICE debug
|
|
|
-TEST_EMULATE:
|
|
|
- if (state->Emulate == ONCE)
|
|
|
- state->Emulate = STOP;
|
|
|
- else if (state->Emulate != RUN)
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- while (state->NumInstrsToExecute);
|
|
|
-exit:
|
|
|
- state->decoded = decoded;
|
|
|
- state->loaded = loaded;
|
|
|
- state->pc = pc;
|
|
|
- //chy 2006-04-12, for ICE debug
|
|
|
- state->decoded_addr=decoded_addr;
|
|
|
- state->loaded_addr=loaded_addr;
|
|
|
-
|
|
|
- return pc;
|
|
|
- }
|
|
|
-
|
|
|
- static volatile void (*gen_func) (void);
|
|
|
-
|
|
|
- static volatile uint32_t tmp_st;
|
|
|
- static volatile uint32_t save_st;
|
|
|
- static volatile uint32_t save_T0;
|
|
|
- static volatile uint32_t save_T1;
|
|
|
- static volatile uint32_t save_T2;
|
|
|
-
|
|
|
- /* This routine evaluates most Data Processing register RHS's with the S
|
|
|
- bit clear. It is intended to be called from the macro DPRegRHS, which
|
|
|
- filters the common case of an unshifted register with in line code. */
|
|
|
-
|
|
|
- static ARMword
|
|
|
- GetDPRegRHS (ARMul_State * state, ARMword instr) {
|
|
|
- ARMword shamt, base;
|
|
|
-
|
|
|
- base = RHSReg;
|
|
|
- if (BIT (4)) {
|
|
|
- /* Shift amount in a register. */
|
|
|
- UNDEF_Shift;
|
|
|
- INCPC;
|
|
|
-#ifndef MODE32
|
|
|
- if (base == 15)
|
|
|
- base = ECC | ER15INT | R15PC | EMODE;
|
|
|
- else
|
|
|
-#endif
|
|
|
- base = state->Reg[base];
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
- shamt = state->Reg[BITS (8, 11)] & 0xff;
|
|
|
- switch ((int) BITS (5, 6)) {
|
|
|
- case LSL:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt >= 32)
|
|
|
- return (0);
|
|
|
- else
|
|
|
- return (base << shamt);
|
|
|
- case LSR:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt >= 32)
|
|
|
- return (0);
|
|
|
- else
|
|
|
- return (base >> shamt);
|
|
|
- case ASR:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt >= 32)
|
|
|
- return ((ARMword) ((int) base >> 31L));
|
|
|
- else
|
|
|
- return ((ARMword)
|
|
|
- (( int) base >> (int) shamt));
|
|
|
- case ROR:
|
|
|
- shamt &= 0x1f;
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else
|
|
|
- return ((base << (32 - shamt)) |
|
|
|
- (base >> shamt));
|
|
|
- }
|
|
|
- } else {
|
|
|
- /* Shift amount is a constant. */
|
|
|
-#ifndef MODE32
|
|
|
- if (base == 15)
|
|
|
- base = ECC | ER15INT | R15PC | EMODE;
|
|
|
- else
|
|
|
-#endif
|
|
|
- base = state->Reg[base];
|
|
|
- shamt = BITS (7, 11);
|
|
|
- switch ((int) BITS (5, 6)) {
|
|
|
- case LSL:
|
|
|
- return (base << shamt);
|
|
|
- case LSR:
|
|
|
- if (shamt == 0)
|
|
|
- return (0);
|
|
|
- else
|
|
|
- return (base >> shamt);
|
|
|
- case ASR:
|
|
|
- if (shamt == 0)
|
|
|
- return ((ARMword) (( int) base >> 31L));
|
|
|
- else
|
|
|
- return ((ARMword)
|
|
|
- (( int) base >> (int) shamt));
|
|
|
- case ROR:
|
|
|
- if (shamt == 0)
|
|
|
- /* It's an RRX. */
|
|
|
- return ((base >> 1) | (CFLAG << 31));
|
|
|
- else
|
|
|
- return ((base << (32 - shamt)) |
|
|
|
- (base >> shamt));
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- /* This routine evaluates most Logical Data Processing register RHS's
|
|
|
- with the S bit set. It is intended to be called from the macro
|
|
|
- DPSRegRHS, which filters the common case of an unshifted register
|
|
|
- with in line code. */
|
|
|
-
|
|
|
- static ARMword
|
|
|
- GetDPSRegRHS (ARMul_State * state, ARMword instr) {
|
|
|
- ARMword shamt, base;
|
|
|
-
|
|
|
- base = RHSReg;
|
|
|
- if (BIT (4)) {
|
|
|
- /* Shift amount in a register. */
|
|
|
- UNDEF_Shift;
|
|
|
- INCPC;
|
|
|
-#ifndef MODE32
|
|
|
- if (base == 15)
|
|
|
- base = ECC | ER15INT | R15PC | EMODE;
|
|
|
- else
|
|
|
-#endif
|
|
|
- base = state->Reg[base];
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
- shamt = state->Reg[BITS (8, 11)] & 0xff;
|
|
|
- switch ((int) BITS (5, 6)) {
|
|
|
- case LSL:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt == 32) {
|
|
|
- ASSIGNC (base & 1);
|
|
|
- return (0);
|
|
|
- } else if (shamt > 32) {
|
|
|
- CLEARC;
|
|
|
- return (0);
|
|
|
- } else {
|
|
|
- ASSIGNC ((base >> (32 - shamt)) & 1);
|
|
|
- return (base << shamt);
|
|
|
- }
|
|
|
- case LSR:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt == 32) {
|
|
|
- ASSIGNC (base >> 31);
|
|
|
- return (0);
|
|
|
- } else if (shamt > 32) {
|
|
|
- CLEARC;
|
|
|
- return (0);
|
|
|
- } else {
|
|
|
- ASSIGNC ((base >> (shamt - 1)) & 1);
|
|
|
- return (base >> shamt);
|
|
|
- }
|
|
|
- case ASR:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- else if (shamt >= 32) {
|
|
|
- ASSIGNC (base >> 31L);
|
|
|
- return ((ARMword) (( int) base >> 31L));
|
|
|
- } else {
|
|
|
- ASSIGNC ((ARMword)
|
|
|
- (( int) base >>
|
|
|
- (int) (shamt - 1)) & 1);
|
|
|
- return ((ARMword)
|
|
|
- ((int) base >> (int) shamt));
|
|
|
- }
|
|
|
- case ROR:
|
|
|
- if (shamt == 0)
|
|
|
- return (base);
|
|
|
- shamt &= 0x1f;
|
|
|
- if (shamt == 0) {
|
|
|
- ASSIGNC (base >> 31);
|
|
|
- return (base);
|
|
|
- } else {
|
|
|
- ASSIGNC ((base >> (shamt - 1)) & 1);
|
|
|
- return ((base << (32 - shamt)) |
|
|
|
- (base >> shamt));
|
|
|
- }
|
|
|
- }
|
|
|
- } else {
|
|
|
- /* Shift amount is a constant. */
|
|
|
-#ifndef MODE32
|
|
|
- if (base == 15)
|
|
|
- base = ECC | ER15INT | R15PC | EMODE;
|
|
|
- else
|
|
|
-#endif
|
|
|
- base = state->Reg[base];
|
|
|
- shamt = BITS (7, 11);
|
|
|
-
|
|
|
- switch ((int) BITS (5, 6)) {
|
|
|
- case LSL:
|
|
|
- ASSIGNC ((base >> (32 - shamt)) & 1);
|
|
|
- return (base << shamt);
|
|
|
- case LSR:
|
|
|
- if (shamt == 0) {
|
|
|
- ASSIGNC (base >> 31);
|
|
|
- return (0);
|
|
|
- } else {
|
|
|
- ASSIGNC ((base >> (shamt - 1)) & 1);
|
|
|
- return (base >> shamt);
|
|
|
- }
|
|
|
- case ASR:
|
|
|
- if (shamt == 0) {
|
|
|
- ASSIGNC (base >> 31L);
|
|
|
- return ((ARMword) ((int) base >> 31L));
|
|
|
- } else {
|
|
|
- ASSIGNC ((ARMword)
|
|
|
- ((int) base >>
|
|
|
- (int) (shamt - 1)) & 1);
|
|
|
- return ((ARMword)
|
|
|
- (( int) base >> (int) shamt));
|
|
|
- }
|
|
|
- case ROR:
|
|
|
- if (shamt == 0) {
|
|
|
- /* It's an RRX. */
|
|
|
- shamt = CFLAG;
|
|
|
- ASSIGNC (base & 1);
|
|
|
- return ((base >> 1) | (shamt << 31));
|
|
|
- } else {
|
|
|
- ASSIGNC ((base >> (shamt - 1)) & 1);
|
|
|
- return ((base << (32 - shamt)) |
|
|
|
- (base >> shamt));
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- /* This routine handles writes to register 15 when the S bit is not set. */
|
|
|
-
|
|
|
- static void
|
|
|
- WriteR15 (ARMul_State * state, ARMword src) {
|
|
|
- /* The ARM documentation states that the two least significant bits
|
|
|
- are discarded when setting PC, except in the cases handled by
|
|
|
- WriteR15Branch() below. It's probably an oversight: in THUMB
|
|
|
- mode, the second least significant bit should probably not be
|
|
|
- discarded. */
|
|
|
-#ifdef MODET
|
|
|
- if (TFLAG)
|
|
|
- src &= 0xfffffffe;
|
|
|
- else
|
|
|
-#endif
|
|
|
- src &= 0xfffffffc;
|
|
|
-
|
|
|
-#ifdef MODE32
|
|
|
- state->Reg[15] = src & PCBITS;
|
|
|
-#else
|
|
|
- state->Reg[15] = (src & R15PCBITS) | ECC | ER15INT | EMODE;
|
|
|
- ARMul_R15Altered (state);
|
|
|
-#endif
|
|
|
-
|
|
|
- FLUSHPIPE;
|
|
|
- }
|
|
|
-
|
|
|
- /* This routine handles writes to register 15 when the S bit is set. */
|
|
|
-
|
|
|
- static void
|
|
|
- WriteSR15 (ARMul_State * state, ARMword src) {
|
|
|
-#ifdef MODE32
|
|
|
- if (state->Bank > 0) {
|
|
|
- state->Cpsr = state->Spsr[state->Bank];
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
- }
|
|
|
-#ifdef MODET
|
|
|
- if (TFLAG)
|
|
|
- src &= 0xfffffffe;
|
|
|
- else
|
|
|
-#endif
|
|
|
- src &= 0xfffffffc;
|
|
|
- state->Reg[15] = src & PCBITS;
|
|
|
-#else
|
|
|
-#ifdef MODET
|
|
|
- if (TFLAG)
|
|
|
- /* ARMul_R15Altered would have to support it. */
|
|
|
- abort ();
|
|
|
- else
|
|
|
-#endif
|
|
|
- src &= 0xfffffffc;
|
|
|
-
|
|
|
- if (state->Bank == USERBANK)
|
|
|
- state->Reg[15] =
|
|
|
- (src & (CCBITS | R15PCBITS)) | ER15INT | EMODE;
|
|
|
- else
|
|
|
- state->Reg[15] = src;
|
|
|
-
|
|
|
- ARMul_R15Altered (state);
|
|
|
-#endif
|
|
|
- FLUSHPIPE;
|
|
|
- }
|
|
|
-
|
|
|
- /* In machines capable of running in Thumb mode, BX, BLX, LDR and LDM
|
|
|
- will switch to Thumb mode if the least significant bit is set. */
|
|
|
-
|
|
|
- static void
|
|
|
- WriteR15Branch (ARMul_State * state, ARMword src) {
|
|
|
-#ifdef MODET
|
|
|
- if (src & 1) {
|
|
|
- /* Thumb bit. */
|
|
|
- SETT;
|
|
|
- state->Reg[15] = src & 0xfffffffe;
|
|
|
- } else {
|
|
|
- CLEART;
|
|
|
- state->Reg[15] = src & 0xfffffffc;
|
|
|
- }
|
|
|
- state->Cpsr = ARMul_GetCPSR (state);
|
|
|
- FLUSHPIPE;
|
|
|
-#else
|
|
|
- WriteR15 (state, src);
|
|
|
-#endif
|
|
|
- }
|
|
|
-
|
|
|
- /* This routine evaluates most Load and Store register RHS's. It is
|
|
|
- intended to be called from the macro LSRegRHS, which filters the
|
|
|
- common case of an unshifted register with in line code. */
|
|
|
-
|
|
|
- static ARMword
|
|
|
- GetLSRegRHS (ARMul_State * state, ARMword instr) {
|
|
|
- ARMword shamt, base;
|
|
|
-
|
|
|
- base = RHSReg;
|
|
|
-#ifndef MODE32
|
|
|
- if (base == 15)
|
|
|
- /* Now forbidden, but ... */
|
|
|
- base = ECC | ER15INT | R15PC | EMODE;
|
|
|
- else
|
|
|
-#endif
|
|
|
- base = state->Reg[base];
|
|
|
-
|
|
|
- shamt = BITS (7, 11);
|
|
|
- switch ((int) BITS (5, 6)) {
|
|
|
- case LSL:
|
|
|
- return (base << shamt);
|
|
|
- case LSR:
|
|
|
- if (shamt == 0)
|
|
|
- return (0);
|
|
|
- else
|
|
|
- return (base >> shamt);
|
|
|
- case ASR:
|
|
|
- if (shamt == 0)
|
|
|
- return ((ARMword) (( int) base >> 31L));
|
|
|
- else
|
|
|
- return ((ARMword) (( int) base >> (int) shamt));
|
|
|
- case ROR:
|
|
|
- if (shamt == 0)
|
|
|
- /* It's an RRX. */
|
|
|
- return ((base >> 1) | (CFLAG << 31));
|
|
|
- else
|
|
|
- return ((base << (32 - shamt)) | (base >> shamt));
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- /* This routine evaluates the ARM7T halfword and signed transfer RHS's. */
|
|
|
-
|
|
|
- static ARMword
|
|
|
- GetLS7RHS (ARMul_State * state, ARMword instr) {
|
|
|
- if (BIT (22) == 0) {
|
|
|
- /* Register. */
|
|
|
-#ifndef MODE32
|
|
|
- if (RHSReg == 15)
|
|
|
- /* Now forbidden, but ... */
|
|
|
- return ECC | ER15INT | R15PC | EMODE;
|
|
|
-#endif
|
|
|
- return state->Reg[RHSReg];
|
|
|
- }
|
|
|
-
|
|
|
- /* Immediate. */
|
|
|
- return BITS (0, 3) | (BITS (8, 11) << 4);
|
|
|
- }
|
|
|
-
|
|
|
- static unsigned
|
|
|
- LoadWord (ARMul_State * state, ARMword instr, ARMword address) {
|
|
|
- ARMword dest;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-#endif
|
|
|
-
|
|
|
- dest = ARMul_LoadWordN (state, address);
|
|
|
-
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
- if (address & 3)
|
|
|
- dest = ARMul_Align (state, address, dest);
|
|
|
- WRITEDESTB (dest);
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
-
|
|
|
- return (DESTReg != LHSReg);
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
- /* This function does the work of loading a halfword. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- LoadHalfWord (ARMul_State * state, ARMword instr, ARMword address,
|
|
|
- int signextend) {
|
|
|
- ARMword dest;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-#endif
|
|
|
- dest = ARMul_LoadHalfWord (state, address);
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
- UNDEF_LSRBPC;
|
|
|
- if (signextend)
|
|
|
- if (dest & 1 << (16 - 1))
|
|
|
- dest = (dest & ((1 << 16) - 1)) - (1 << 16);
|
|
|
-
|
|
|
- WRITEDEST (dest);
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
-
|
|
|
- return (DESTReg != LHSReg);
|
|
|
- }
|
|
|
-
|
|
|
-#endif /* MODET */
|
|
|
-
|
|
|
- /* This function does the work of loading a byte for a LDRB instruction. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- LoadByte (ARMul_State * state, ARMword instr, ARMword address, int signextend) {
|
|
|
- ARMword dest;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-#endif
|
|
|
- dest = ARMul_LoadByte (state, address);
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
- UNDEF_LSRBPC;
|
|
|
- if (signextend)
|
|
|
- if (dest & 1 << (8 - 1))
|
|
|
- dest = (dest & ((1 << 8) - 1)) - (1 << 8);
|
|
|
-
|
|
|
- WRITEDEST (dest);
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
-
|
|
|
- return (DESTReg != LHSReg);
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of loading two words for a LDRD instruction. */
|
|
|
-
|
|
|
- static void
|
|
|
- Handle_Load_Double (ARMul_State * state, ARMword instr) {
|
|
|
- ARMword dest_reg;
|
|
|
- ARMword addr_reg;
|
|
|
- ARMword write_back = BIT (21);
|
|
|
- ARMword immediate = BIT (22);
|
|
|
- ARMword add_to_base = BIT (23);
|
|
|
- ARMword pre_indexed = BIT (24);
|
|
|
- ARMword offset;
|
|
|
- ARMword addr;
|
|
|
- ARMword sum;
|
|
|
- ARMword base;
|
|
|
- ARMword value1;
|
|
|
- ARMword value2;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-
|
|
|
- /* If the writeback bit is set, the pre-index bit must be clear. */
|
|
|
- if (write_back && !pre_indexed) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Extract the base address register. */
|
|
|
- addr_reg = LHSReg;
|
|
|
-
|
|
|
- /* Extract the destination register and check it. */
|
|
|
- dest_reg = DESTReg;
|
|
|
-
|
|
|
- /* Destination register must be even. */
|
|
|
- if ((dest_reg & 1)
|
|
|
- /* Destination register cannot be LR. */
|
|
|
- || (dest_reg == 14)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Compute the base address. */
|
|
|
- base = state->Reg[addr_reg];
|
|
|
-
|
|
|
- /* Compute the offset. */
|
|
|
- offset = immediate ? ((BITS (8, 11) << 4) | BITS (0, 3)) : state->
|
|
|
- Reg[RHSReg];
|
|
|
-
|
|
|
- /* Compute the sum of the two. */
|
|
|
- if (add_to_base)
|
|
|
- sum = base + offset;
|
|
|
- else
|
|
|
- sum = base - offset;
|
|
|
-
|
|
|
- /* If this is a pre-indexed mode use the sum. */
|
|
|
- if (pre_indexed)
|
|
|
- addr = sum;
|
|
|
- else
|
|
|
- addr = base;
|
|
|
-
|
|
|
- /* The address must be aligned on a 8 byte boundary. */
|
|
|
- /*if (addr & 0x7) {
|
|
|
- #ifdef ABORTS
|
|
|
- ARMul_DATAABORT (addr);
|
|
|
- #else
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- #endif
|
|
|
- return;
|
|
|
- }*/
|
|
|
- /* Lets just forcibly align it for now */
|
|
|
- //addr = (addr + 7) & ~7;
|
|
|
-
|
|
|
- /* For pre indexed or post indexed addressing modes,
|
|
|
- check that the destination registers do not overlap
|
|
|
- the address registers. */
|
|
|
- if ((!pre_indexed || write_back)
|
|
|
- && (addr_reg == dest_reg || addr_reg == dest_reg + 1)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Load the words. */
|
|
|
- value1 = ARMul_LoadWordN (state, addr);
|
|
|
- value2 = ARMul_LoadWordN (state, addr + 4);
|
|
|
-
|
|
|
- /* Check for data aborts. */
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- ARMul_Icycles (state, 2, 0L);
|
|
|
-
|
|
|
- /* Store the values. */
|
|
|
- state->Reg[dest_reg] = value1;
|
|
|
- state->Reg[dest_reg + 1] = value2;
|
|
|
-
|
|
|
- /* Do the post addressing and writeback. */
|
|
|
- if (!pre_indexed)
|
|
|
- addr = sum;
|
|
|
-
|
|
|
- if (!pre_indexed || write_back)
|
|
|
- state->Reg[addr_reg] = addr;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of storing two words for a STRD instruction. */
|
|
|
-
|
|
|
- static void
|
|
|
- Handle_Store_Double (ARMul_State * state, ARMword instr) {
|
|
|
- ARMword src_reg;
|
|
|
- ARMword addr_reg;
|
|
|
- ARMword write_back = BIT (21);
|
|
|
- ARMword immediate = BIT (22);
|
|
|
- ARMword add_to_base = BIT (23);
|
|
|
- ARMword pre_indexed = BIT (24);
|
|
|
- ARMword offset;
|
|
|
- ARMword addr;
|
|
|
- ARMword sum;
|
|
|
- ARMword base;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-
|
|
|
- /* If the writeback bit is set, the pre-index bit must be clear. */
|
|
|
- if (write_back && !pre_indexed) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Extract the base address register. */
|
|
|
- addr_reg = LHSReg;
|
|
|
-
|
|
|
- /* Base register cannot be PC. */
|
|
|
- if (addr_reg == 15) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Extract the source register. */
|
|
|
- src_reg = DESTReg;
|
|
|
-
|
|
|
- /* Source register must be even. */
|
|
|
- if (src_reg & 1) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Compute the base address. */
|
|
|
- base = state->Reg[addr_reg];
|
|
|
-
|
|
|
- /* Compute the offset. */
|
|
|
- offset = immediate ? ((BITS (8, 11) << 4) | BITS (0, 3)) : state->
|
|
|
- Reg[RHSReg];
|
|
|
-
|
|
|
- /* Compute the sum of the two. */
|
|
|
- if (add_to_base)
|
|
|
- sum = base + offset;
|
|
|
- else
|
|
|
- sum = base - offset;
|
|
|
-
|
|
|
- /* If this is a pre-indexed mode use the sum. */
|
|
|
- if (pre_indexed)
|
|
|
- addr = sum;
|
|
|
- else
|
|
|
- addr = base;
|
|
|
-
|
|
|
- /* The address must be aligned on a 8 byte boundary. */
|
|
|
- /*if (addr & 0x7) {
|
|
|
- #ifdef ABORTS
|
|
|
- ARMul_DATAABORT (addr);
|
|
|
- #else
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- #endif
|
|
|
- return;
|
|
|
- }*/
|
|
|
- /* Lets just forcibly align it for now */
|
|
|
- //addr = (addr + 7) & ~7;
|
|
|
-
|
|
|
- /* For pre indexed or post indexed addressing modes,
|
|
|
- check that the destination registers do not overlap
|
|
|
- the address registers. */
|
|
|
- if ((!pre_indexed || write_back)
|
|
|
- && (addr_reg == src_reg || addr_reg == src_reg + 1)) {
|
|
|
- ARMul_UndefInstr (state, instr);
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Load the words. */
|
|
|
- ARMul_StoreWordN (state, addr, state->Reg[src_reg]);
|
|
|
- ARMul_StoreWordN (state, addr + 4, state->Reg[src_reg + 1]);
|
|
|
-
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return;
|
|
|
- }
|
|
|
-
|
|
|
- /* Do the post addressing and writeback. */
|
|
|
- if (!pre_indexed)
|
|
|
- addr = sum;
|
|
|
-
|
|
|
- if (!pre_indexed || write_back)
|
|
|
- state->Reg[addr_reg] = addr;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of storing a word from a STR instruction. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- StoreWord (ARMul_State * state, ARMword instr, ARMword address) {
|
|
|
- BUSUSEDINCPCN;
|
|
|
-#ifndef MODE32
|
|
|
- if (DESTReg == 15)
|
|
|
- state->Reg[15] = ECC | ER15INT | R15PC | EMODE;
|
|
|
-#endif
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_StoreWordN (state, address, DEST);
|
|
|
-#else
|
|
|
- if (VECTORACCESS (address) || ADDREXCEPT (address)) {
|
|
|
- INTERNALABORT (address);
|
|
|
- (void) ARMul_LoadWordN (state, address);
|
|
|
- } else
|
|
|
- ARMul_StoreWordN (state, address, DEST);
|
|
|
-#endif
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
-
|
|
|
- return TRUE;
|
|
|
- }
|
|
|
-
|
|
|
-#ifdef MODET
|
|
|
- /* This function does the work of storing a byte for a STRH instruction. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- StoreHalfWord (ARMul_State * state, ARMword instr, ARMword address) {
|
|
|
- BUSUSEDINCPCN;
|
|
|
-
|
|
|
-#ifndef MODE32
|
|
|
- if (DESTReg == 15)
|
|
|
- state->Reg[15] = ECC | ER15INT | R15PC | EMODE;
|
|
|
-#endif
|
|
|
-
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_StoreHalfWord (state, address, DEST);
|
|
|
-#else
|
|
|
- if (VECTORACCESS (address) || ADDREXCEPT (address)) {
|
|
|
- INTERNALABORT (address);
|
|
|
- (void) ARMul_LoadHalfWord (state, address);
|
|
|
- } else
|
|
|
- ARMul_StoreHalfWord (state, address, DEST);
|
|
|
-#endif
|
|
|
-
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
- return TRUE;
|
|
|
- }
|
|
|
-
|
|
|
-#endif /* MODET */
|
|
|
-
|
|
|
- /* This function does the work of storing a byte for a STRB instruction. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- StoreByte (ARMul_State * state, ARMword instr, ARMword address) {
|
|
|
- BUSUSEDINCPCN;
|
|
|
-#ifndef MODE32
|
|
|
- if (DESTReg == 15)
|
|
|
- state->Reg[15] = ECC | ER15INT | R15PC | EMODE;
|
|
|
-#endif
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_StoreByte (state, address, DEST);
|
|
|
-#else
|
|
|
- if (VECTORACCESS (address) || ADDREXCEPT (address)) {
|
|
|
- INTERNALABORT (address);
|
|
|
- (void) ARMul_LoadByte (state, address);
|
|
|
- } else
|
|
|
- ARMul_StoreByte (state, address, DEST);
|
|
|
-#endif
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- return state->lateabtSig;
|
|
|
- }
|
|
|
- //UNDEF_LSRBPC;
|
|
|
- return TRUE;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of loading the registers listed in an LDM
|
|
|
- instruction, when the S bit is clear. The code here is always increment
|
|
|
- after, it's up to the caller to get the input address correct and to
|
|
|
- handle base register modification. */
|
|
|
-
|
|
|
- static void
|
|
|
- LoadMult (ARMul_State * state, ARMword instr, ARMword address, ARMword WBBase) {
|
|
|
- ARMword dest, temp;
|
|
|
-
|
|
|
- //UNDEF_LSMNoRegs;
|
|
|
- //UNDEF_LSMPCBase;
|
|
|
- //UNDEF_LSMBaseInListWb;
|
|
|
- BUSUSEDINCPCS;
|
|
|
-#ifndef MODE32
|
|
|
- if (ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-#endif
|
|
|
- /*chy 2004-05-23 may write twice
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
- */
|
|
|
- /* N cycle first. */
|
|
|
- for (temp = 0; !BIT (temp); temp++);
|
|
|
-
|
|
|
- dest = ARMul_LoadWordN (state, address);
|
|
|
-
|
|
|
- if (!state->abortSig && !state->Aborted)
|
|
|
- state->Reg[temp++] = dest;
|
|
|
- else if (!state->Aborted) {
|
|
|
- //XScale_set_fsr_far (state, ARMul_CP15_R5_ST_ALIGN, address);
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
- /*chy 2004-05-23 chy goto end*/
|
|
|
- if (state->Aborted)
|
|
|
- goto L_ldm_makeabort;
|
|
|
- /* S cycles from here on. */
|
|
|
- for (; temp < 16; temp++)
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Load this register. */
|
|
|
- address += 4;
|
|
|
- dest = ARMul_LoadWordS (state, address);
|
|
|
-
|
|
|
- if (!state->abortSig && !state->Aborted)
|
|
|
- state->Reg[temp] = dest;
|
|
|
- else if (!state->Aborted) {
|
|
|
- /*XScale_set_fsr_far (state,
|
|
|
- ARMul_CP15_R5_ST_ALIGN,
|
|
|
- address);*/
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
- /*chy 2004-05-23 chy goto end */
|
|
|
- if (state->Aborted)
|
|
|
- goto L_ldm_makeabort;
|
|
|
- }
|
|
|
-
|
|
|
- if (BIT (15) && !state->Aborted)
|
|
|
- /* PC is in the reg list. */
|
|
|
- WriteR15Branch (state, PC);
|
|
|
-
|
|
|
- /* To write back the final register. */
|
|
|
- /* ARMul_Icycles (state, 1, 0L);*/
|
|
|
- /*chy 2004-05-23, see below
|
|
|
- if (state->Aborted)
|
|
|
- {
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
-
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
- */
|
|
|
- /*chy 2004-05-23 should compare the Abort Models*/
|
|
|
-L_ldm_makeabort:
|
|
|
- /* To write back the final register. */
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
-
|
|
|
- /* chy 2005-11-24, bug found by benjl@cse.unsw.edu.au, etc */
|
|
|
- /*
|
|
|
- if (state->Aborted)
|
|
|
- {
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- if (!(state->abortSig && state->Aborted && state->lateabtSig == LOW))
|
|
|
- LSBase = WBBase;
|
|
|
- TAKEABORT;
|
|
|
- }else if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
- */
|
|
|
- if (state->Aborted) {
|
|
|
- if (BIT (21) && LHSReg != 15) {
|
|
|
- if (!(state->abortSig)) {
|
|
|
- }
|
|
|
- }
|
|
|
- TAKEABORT;
|
|
|
- } else if (BIT (21) && LHSReg != 15) {
|
|
|
- LSBase = WBBase;
|
|
|
- }
|
|
|
- /* chy 2005-11-24, over */
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of loading the registers listed in an LDM
|
|
|
- instruction, when the S bit is set. The code here is always increment
|
|
|
- after, it's up to the caller to get the input address correct and to
|
|
|
- handle base register modification. */
|
|
|
-
|
|
|
- static void
|
|
|
- LoadSMult (ARMul_State * state,
|
|
|
- ARMword instr, ARMword address, ARMword WBBase) {
|
|
|
- ARMword dest, temp;
|
|
|
-
|
|
|
- //UNDEF_LSMNoRegs;
|
|
|
- //UNDEF_LSMPCBase;
|
|
|
- //UNDEF_LSMBaseInListWb;
|
|
|
-
|
|
|
- BUSUSEDINCPCS;
|
|
|
-
|
|
|
-#ifndef MODE32
|
|
|
- if (ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-#endif
|
|
|
- /* chy 2004-05-23, may write twice
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
- */
|
|
|
- if (!BIT (15) && state->Bank != USERBANK) {
|
|
|
- /* Temporary reg bank switch. */
|
|
|
- (void) ARMul_SwitchMode (state, state->Mode, USER26MODE);
|
|
|
- UNDEF_LSMUserBankWb;
|
|
|
- }
|
|
|
-
|
|
|
- /* N cycle first. */
|
|
|
- for (temp = 0; !BIT (temp); temp++);
|
|
|
-
|
|
|
- dest = ARMul_LoadWordN (state, address);
|
|
|
-
|
|
|
- if (!state->abortSig)
|
|
|
- state->Reg[temp++] = dest;
|
|
|
- else if (!state->Aborted) {
|
|
|
- //XScale_set_fsr_far (state, ARMul_CP15_R5_ST_ALIGN, address);
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
-
|
|
|
- /*chy 2004-05-23 chy goto end*/
|
|
|
- if (state->Aborted)
|
|
|
- goto L_ldm_s_makeabort;
|
|
|
- /* S cycles from here on. */
|
|
|
- for (; temp < 16; temp++)
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Load this register. */
|
|
|
- address += 4;
|
|
|
- dest = ARMul_LoadWordS (state, address);
|
|
|
-
|
|
|
- if (!state->abortSig && !state->Aborted)
|
|
|
- state->Reg[temp] = dest;
|
|
|
- else if (!state->Aborted) {
|
|
|
- /*XScale_set_fsr_far (state,
|
|
|
- ARMul_CP15_R5_ST_ALIGN,
|
|
|
- address);*/
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
- /*chy 2004-05-23 chy goto end */
|
|
|
- if (state->Aborted)
|
|
|
- goto L_ldm_s_makeabort;
|
|
|
- }
|
|
|
-
|
|
|
- /*chy 2004-05-23 label of ldm_s_makeabort*/
|
|
|
-L_ldm_s_makeabort:
|
|
|
- /*chy 2004-06-06 LSBase process should be here, not in the end of this function. Because ARMul_CPSRAltered maybe change R13(SP) R14(lr). If not, simulate INSTR ldmia sp!,[....pc]^ error.*/
|
|
|
- /*chy 2004-05-23 should compare the Abort Models*/
|
|
|
- if (state->Aborted) {
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- if (!
|
|
|
- (state->abortSig && state->Aborted
|
|
|
- && state->lateabtSig == LOW))
|
|
|
- LSBase = WBBase;
|
|
|
- TAKEABORT;
|
|
|
- } else if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
-
|
|
|
- if (BIT (15) && !state->Aborted) {
|
|
|
- /* PC is in the reg list. */
|
|
|
-#ifdef MODE32
|
|
|
- //chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
|
|
|
- if (state->Mode != USER26MODE && state->Mode != USER32MODE ) {
|
|
|
- state->Cpsr = GETSPSR (state->Bank);
|
|
|
- ARMul_CPSRAltered (state);
|
|
|
- }
|
|
|
-
|
|
|
- WriteR15 (state, PC);
|
|
|
-#else
|
|
|
- //chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
|
|
|
- if (state->Mode == USER26MODE || state->Mode == USER32MODE ) {
|
|
|
- /* Protect bits in user mode. */
|
|
|
- ASSIGNN ((state->Reg[15] & NBIT) != 0);
|
|
|
- ASSIGNZ ((state->Reg[15] & ZBIT) != 0);
|
|
|
- ASSIGNC ((state->Reg[15] & CBIT) != 0);
|
|
|
- ASSIGNV ((state->Reg[15] & VBIT) != 0);
|
|
|
- } else
|
|
|
- ARMul_R15Altered (state);
|
|
|
-
|
|
|
- FLUSHPIPE;
|
|
|
-#endif
|
|
|
- }
|
|
|
-
|
|
|
- //chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
|
|
|
- if (!BIT (15) && state->Mode != USER26MODE
|
|
|
- && state->Mode != USER32MODE )
|
|
|
- /* Restore the correct bank. */
|
|
|
- (void) ARMul_SwitchMode (state, USER26MODE, state->Mode);
|
|
|
-
|
|
|
- /* To write back the final register. */
|
|
|
- ARMul_Icycles (state, 1, 0L);
|
|
|
- /* chy 2004-05-23, see below
|
|
|
- if (state->Aborted)
|
|
|
- {
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
-
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
- */
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of storing the registers listed in an STM
|
|
|
- instruction, when the S bit is clear. The code here is always increment
|
|
|
- after, it's up to the caller to get the input address correct and to
|
|
|
- handle base register modification. */
|
|
|
-
|
|
|
- static void
|
|
|
- StoreMult (ARMul_State * state,
|
|
|
- ARMword instr, ARMword address, ARMword WBBase) {
|
|
|
- ARMword temp;
|
|
|
-
|
|
|
- UNDEF_LSMNoRegs;
|
|
|
- UNDEF_LSMPCBase;
|
|
|
- UNDEF_LSMBaseInListWb;
|
|
|
-
|
|
|
- if (!TFLAG)
|
|
|
- /* N-cycle, increment the PC and update the NextInstr state. */
|
|
|
- BUSUSEDINCPCN;
|
|
|
-
|
|
|
-#ifndef MODE32
|
|
|
- if (VECTORACCESS (address) || ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-
|
|
|
- if (BIT (15))
|
|
|
- PATCHR15;
|
|
|
-#endif
|
|
|
-
|
|
|
- /* N cycle first. */
|
|
|
- for (temp = 0; !BIT (temp); temp++);
|
|
|
-
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_StoreWordN (state, address, state->Reg[temp++]);
|
|
|
-#else
|
|
|
- if (state->Aborted) {
|
|
|
- (void) ARMul_LoadWordN (state, address);
|
|
|
-
|
|
|
- /* Fake the Stores as Loads. */
|
|
|
- for (; temp < 16; temp++)
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Save this register. */
|
|
|
- address += 4;
|
|
|
- (void) ARMul_LoadWordS (state, address);
|
|
|
- }
|
|
|
-
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
- TAKEABORT;
|
|
|
- return;
|
|
|
- } else
|
|
|
- ARMul_StoreWordN (state, address, state->Reg[temp++]);
|
|
|
-#endif
|
|
|
-
|
|
|
- if (state->abortSig && !state->Aborted) {
|
|
|
- //XScale_set_fsr_far (state, ARMul_CP15_R5_ST_ALIGN, address);
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
-
|
|
|
-//chy 2004-05-23, needn't store other when aborted
|
|
|
- if (state->Aborted)
|
|
|
- goto L_stm_takeabort;
|
|
|
-
|
|
|
- /* S cycles from here on. */
|
|
|
- for (; temp < 16; temp++)
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Save this register. */
|
|
|
- address += 4;
|
|
|
-
|
|
|
- ARMul_StoreWordS (state, address, state->Reg[temp]);
|
|
|
-
|
|
|
- if (state->abortSig && !state->Aborted) {
|
|
|
- /*XScale_set_fsr_far (state,
|
|
|
- ARMul_CP15_R5_ST_ALIGN,
|
|
|
- address);*/
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
- //chy 2004-05-23, needn't store other when aborted
|
|
|
- if (state->Aborted)
|
|
|
- goto L_stm_takeabort;
|
|
|
- }
|
|
|
-
|
|
|
-//chy 2004-05-23,should compare the Abort Models
|
|
|
-L_stm_takeabort:
|
|
|
- if (BIT (21) && LHSReg != 15) {
|
|
|
- if (!
|
|
|
- (state->abortSig && state->Aborted
|
|
|
- && state->lateabtSig == LOW))
|
|
|
- LSBase = WBBase;
|
|
|
- }
|
|
|
- if (state->Aborted)
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of storing the registers listed in an STM
|
|
|
- instruction when the S bit is set. The code here is always increment
|
|
|
- after, it's up to the caller to get the input address correct and to
|
|
|
- handle base register modification. */
|
|
|
-
|
|
|
- static void
|
|
|
- StoreSMult (ARMul_State * state,
|
|
|
- ARMword instr, ARMword address, ARMword WBBase) {
|
|
|
- ARMword temp;
|
|
|
-
|
|
|
- UNDEF_LSMNoRegs;
|
|
|
- UNDEF_LSMPCBase;
|
|
|
- UNDEF_LSMBaseInListWb;
|
|
|
-
|
|
|
- BUSUSEDINCPCN;
|
|
|
-
|
|
|
-#ifndef MODE32
|
|
|
- if (VECTORACCESS (address) || ADDREXCEPT (address))
|
|
|
- INTERNALABORT (address);
|
|
|
-
|
|
|
- if (BIT (15))
|
|
|
- PATCHR15;
|
|
|
-#endif
|
|
|
-
|
|
|
- if (state->Bank != USERBANK) {
|
|
|
- /* Force User Bank. */
|
|
|
- (void) ARMul_SwitchMode (state, state->Mode, USER26MODE);
|
|
|
- UNDEF_LSMUserBankWb;
|
|
|
- }
|
|
|
-
|
|
|
- for (temp = 0; !BIT (temp); temp++); /* N cycle first. */
|
|
|
-
|
|
|
-#ifdef MODE32
|
|
|
- ARMul_StoreWordN (state, address, state->Reg[temp++]);
|
|
|
-#else
|
|
|
- if (state->Aborted) {
|
|
|
- (void) ARMul_LoadWordN (state, address);
|
|
|
-
|
|
|
- for (; temp < 16; temp++)
|
|
|
- /* Fake the Stores as Loads. */
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Save this register. */
|
|
|
- address += 4;
|
|
|
-
|
|
|
- (void) ARMul_LoadWordS (state, address);
|
|
|
- }
|
|
|
-
|
|
|
- if (BIT (21) && LHSReg != 15)
|
|
|
- LSBase = WBBase;
|
|
|
-
|
|
|
- TAKEABORT;
|
|
|
- return;
|
|
|
- } else
|
|
|
- ARMul_StoreWordN (state, address, state->Reg[temp++]);
|
|
|
-#endif
|
|
|
-
|
|
|
- if (state->abortSig && !state->Aborted) {
|
|
|
- //XScale_set_fsr_far (state, ARMul_CP15_R5_ST_ALIGN, address);
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
-
|
|
|
-//chy 2004-05-23, needn't store other when aborted
|
|
|
- if (state->Aborted)
|
|
|
- goto L_stm_s_takeabort;
|
|
|
- /* S cycles from here on. */
|
|
|
- for (; temp < 16; temp++)
|
|
|
- if (BIT (temp)) {
|
|
|
- /* Save this register. */
|
|
|
- address += 4;
|
|
|
-
|
|
|
- ARMul_StoreWordS (state, address, state->Reg[temp]);
|
|
|
-
|
|
|
- if (state->abortSig && !state->Aborted) {
|
|
|
- /*XScale_set_fsr_far (state,
|
|
|
- ARMul_CP15_R5_ST_ALIGN,
|
|
|
- address);*/
|
|
|
- state->Aborted = ARMul_DataAbortV;
|
|
|
- }
|
|
|
- //chy 2004-05-23, needn't store other when aborted
|
|
|
- if (state->Aborted)
|
|
|
- goto L_stm_s_takeabort;
|
|
|
- }
|
|
|
-
|
|
|
- //chy 2006-02-16 , should not consider system mode, don't conside 26bit mode
|
|
|
- if (state->Mode != USER26MODE && state->Mode != USER32MODE )
|
|
|
- /* Restore the correct bank. */
|
|
|
- (void) ARMul_SwitchMode (state, USER26MODE, state->Mode);
|
|
|
-
|
|
|
-//chy 2004-05-23,should compare the Abort Models
|
|
|
-L_stm_s_takeabort:
|
|
|
- if (BIT (21) && LHSReg != 15) {
|
|
|
- if (!
|
|
|
- (state->abortSig && state->Aborted
|
|
|
- && state->lateabtSig == LOW))
|
|
|
- LSBase = WBBase;
|
|
|
- }
|
|
|
-
|
|
|
- if (state->Aborted)
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of adding two 32bit values
|
|
|
- together, and calculating if a carry has occurred. */
|
|
|
-
|
|
|
- static ARMword
|
|
|
- Add32 (ARMword a1, ARMword a2, int *carry) {
|
|
|
- ARMword result = (a1 + a2);
|
|
|
- unsigned int uresult = (unsigned int) result;
|
|
|
- unsigned int ua1 = (unsigned int) a1;
|
|
|
-
|
|
|
- /* If (result == RdLo) and (state->Reg[nRdLo] == 0),
|
|
|
- or (result > RdLo) then we have no carry. */
|
|
|
- if ((uresult == ua1) ? (a2 != 0) : (uresult < ua1))
|
|
|
- *carry = 1;
|
|
|
- else
|
|
|
- *carry = 0;
|
|
|
-
|
|
|
- return result;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of multiplying
|
|
|
- two 32bit values to give a 64bit result. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- Multiply64 (ARMul_State * state, ARMword instr, int msigned, int scc) {
|
|
|
- /* Operand register numbers. */
|
|
|
- int nRdHi, nRdLo, nRs, nRm;
|
|
|
- ARMword RdHi = 0, RdLo = 0, Rm;
|
|
|
- /* Cycle count. */
|
|
|
- int scount;
|
|
|
-
|
|
|
- nRdHi = BITS (16, 19);
|
|
|
- nRdLo = BITS (12, 15);
|
|
|
- nRs = BITS (8, 11);
|
|
|
- nRm = BITS (0, 3);
|
|
|
-
|
|
|
- /* Needed to calculate the cycle count. */
|
|
|
- Rm = state->Reg[nRm];
|
|
|
-
|
|
|
- /* Check for illegal operand combinations first. */
|
|
|
- if (nRdHi != 15
|
|
|
- && nRdLo != 15
|
|
|
- && nRs != 15
|
|
|
- //&& nRm != 15 && nRdHi != nRdLo && nRdHi != nRm && nRdLo != nRm) {
|
|
|
- && nRm != 15 && nRdHi != nRdLo ) {
|
|
|
- /* Intermediate results. */
|
|
|
- ARMword lo, mid1, mid2, hi;
|
|
|
- int carry;
|
|
|
- ARMword Rs = state->Reg[nRs];
|
|
|
- int sign = 0;
|
|
|
-
|
|
|
- if (msigned) {
|
|
|
- /* Compute sign of result and adjust operands if necessary. */
|
|
|
- sign = (Rm ^ Rs) & 0x80000000;
|
|
|
-
|
|
|
- if (((signed int) Rm) < 0)
|
|
|
- Rm = -Rm;
|
|
|
-
|
|
|
- if (((signed int) Rs) < 0)
|
|
|
- Rs = -Rs;
|
|
|
- }
|
|
|
-
|
|
|
- /* We can split the 32x32 into four 16x16 operations. This
|
|
|
- ensures that we do not lose precision on 32bit only hosts. */
|
|
|
- lo = ((Rs & 0xFFFF) * (Rm & 0xFFFF));
|
|
|
- mid1 = ((Rs & 0xFFFF) * ((Rm >> 16) & 0xFFFF));
|
|
|
- mid2 = (((Rs >> 16) & 0xFFFF) * (Rm & 0xFFFF));
|
|
|
- hi = (((Rs >> 16) & 0xFFFF) * ((Rm >> 16) & 0xFFFF));
|
|
|
-
|
|
|
- /* We now need to add all of these results together, taking
|
|
|
- care to propogate the carries from the additions. */
|
|
|
- RdLo = Add32 (lo, (mid1 << 16), &carry);
|
|
|
- RdHi = carry;
|
|
|
- RdLo = Add32 (RdLo, (mid2 << 16), &carry);
|
|
|
- RdHi += (carry + ((mid1 >> 16) & 0xFFFF) +
|
|
|
- ((mid2 >> 16) & 0xFFFF) + hi);
|
|
|
-
|
|
|
- if (sign) {
|
|
|
- /* Negate result if necessary. */
|
|
|
- RdLo = ~RdLo;
|
|
|
- RdHi = ~RdHi;
|
|
|
- if (RdLo == 0xFFFFFFFF) {
|
|
|
- RdLo = 0;
|
|
|
- RdHi += 1;
|
|
|
- } else
|
|
|
- RdLo += 1;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[nRdLo] = RdLo;
|
|
|
- state->Reg[nRdHi] = RdHi;
|
|
|
- } else {
|
|
|
- fprintf (stderr, "sim: MULTIPLY64 - INVALID ARGUMENTS, instr=0x%x\n", instr);
|
|
|
- }
|
|
|
- if (scc)
|
|
|
- /* Ensure that both RdHi and RdLo are used to compute Z,
|
|
|
- but don't let RdLo's sign bit make it to N. */
|
|
|
- ARMul_NegZero (state, RdHi | (RdLo >> 16) | (RdLo & 0xFFFF));
|
|
|
-
|
|
|
- /* The cycle count depends on whether the instruction is a signed or
|
|
|
- unsigned multiply, and what bits are clear in the multiplier. */
|
|
|
- if (msigned && (Rm & ((unsigned) 1 << 31)))
|
|
|
- /* Invert the bits to make the check against zero. */
|
|
|
- Rm = ~Rm;
|
|
|
-
|
|
|
- if ((Rm & 0xFFFFFF00) == 0)
|
|
|
- scount = 1;
|
|
|
- else if ((Rm & 0xFFFF0000) == 0)
|
|
|
- scount = 2;
|
|
|
- else if ((Rm & 0xFF000000) == 0)
|
|
|
- scount = 3;
|
|
|
- else
|
|
|
- scount = 4;
|
|
|
-
|
|
|
- return 2 + scount;
|
|
|
- }
|
|
|
-
|
|
|
- /* This function does the work of multiplying two 32bit
|
|
|
- values and adding a 64bit value to give a 64bit result. */
|
|
|
-
|
|
|
- static unsigned
|
|
|
- MultiplyAdd64 (ARMul_State * state, ARMword instr, int msigned, int scc) {
|
|
|
- unsigned scount;
|
|
|
- ARMword RdLo, RdHi;
|
|
|
- int nRdHi, nRdLo;
|
|
|
- int carry = 0;
|
|
|
-
|
|
|
- nRdHi = BITS (16, 19);
|
|
|
- nRdLo = BITS (12, 15);
|
|
|
-
|
|
|
- RdHi = state->Reg[nRdHi];
|
|
|
- RdLo = state->Reg[nRdLo];
|
|
|
-
|
|
|
- scount = Multiply64 (state, instr, msigned, LDEFAULT);
|
|
|
-
|
|
|
- RdLo = Add32 (RdLo, state->Reg[nRdLo], &carry);
|
|
|
- RdHi = (RdHi + state->Reg[nRdHi]) + carry;
|
|
|
-
|
|
|
- state->Reg[nRdLo] = RdLo;
|
|
|
- state->Reg[nRdHi] = RdHi;
|
|
|
-
|
|
|
- if (scc)
|
|
|
- /* Ensure that both RdHi and RdLo are used to compute Z,
|
|
|
- but don't let RdLo's sign bit make it to N. */
|
|
|
- ARMul_NegZero (state, RdHi | (RdLo >> 16) | (RdLo & 0xFFFF));
|
|
|
-
|
|
|
- /* Extra cycle for addition. */
|
|
|
- return scount + 1;
|
|
|
- }
|
|
|
-
|
|
|
- /* Attempt to emulate an ARMv6 instruction.
|
|
|
- Returns non-zero upon success. */
|
|
|
-
|
|
|
- static int handle_v6_insn(ARMul_State* state, ARMword instr) {
|
|
|
- switch (BITS(20, 27)) {
|
|
|
- case 0x03:
|
|
|
- printf ("Unhandled v6 insn: ldr\n");
|
|
|
- break;
|
|
|
- case 0x04: // UMAAL
|
|
|
- {
|
|
|
- const u8 rm_idx = BITS(8, 11);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 rd_lo_idx = BITS(12, 15);
|
|
|
- const u8 rd_hi_idx = BITS(16, 19);
|
|
|
-
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
- const u32 rd_lo_val = state->Reg[rd_lo_idx];
|
|
|
- const u32 rd_hi_val = state->Reg[rd_hi_idx];
|
|
|
-
|
|
|
- const u64 result = (rn_val * rm_val) + rd_lo_val + rd_hi_val;
|
|
|
-
|
|
|
- state->Reg[rd_lo_idx] = (result & 0xFFFFFFFF);
|
|
|
- state->Reg[rd_hi_idx] = ((result >> 32) & 0xFFFFFFFF);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x06:
|
|
|
- printf ("Unhandled v6 insn: mls/str\n");
|
|
|
- break;
|
|
|
- case 0x16:
|
|
|
- printf ("Unhandled v6 insn: smi\n");
|
|
|
- break;
|
|
|
- case 0x18:
|
|
|
- if (BITS(4, 7) == 0x9) {
|
|
|
- /* strex */
|
|
|
- u32 l = LHSReg;
|
|
|
- u32 r = RHSReg;
|
|
|
- u32 lhs = LHS;
|
|
|
-
|
|
|
- bool enter = false;
|
|
|
-
|
|
|
- if (state->currentexval == (u32)ARMul_ReadWord(state, state->currentexaddr))enter = true;
|
|
|
- //StoreWord(state, lhs, RHS)
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
-
|
|
|
- if (enter) {
|
|
|
- ARMul_StoreWordS(state, lhs, RHS);
|
|
|
- state->Reg[DESTReg] = 0;
|
|
|
- }
|
|
|
- else {
|
|
|
- state->Reg[DESTReg] = 1;
|
|
|
- }
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- printf ("Unhandled v6 insn: strex\n");
|
|
|
- break;
|
|
|
- case 0x19:
|
|
|
- /* ldrex */
|
|
|
- if (BITS(4, 7) == 0x9) {
|
|
|
- u32 lhs = LHS;
|
|
|
-
|
|
|
- state->currentexaddr = lhs;
|
|
|
- state->currentexval = ARMul_ReadWord(state, lhs);
|
|
|
-
|
|
|
- LoadWord(state, instr, lhs);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- printf ("Unhandled v6 insn: ldrex\n");
|
|
|
- break;
|
|
|
- case 0x1a:
|
|
|
- printf ("Unhandled v6 insn: strexd\n");
|
|
|
- break;
|
|
|
- case 0x1b:
|
|
|
- printf ("Unhandled v6 insn: ldrexd\n");
|
|
|
- break;
|
|
|
- case 0x1c:
|
|
|
- if (BITS(4, 7) == 0x9) {
|
|
|
- /* strexb */
|
|
|
- u32 lhs = LHS;
|
|
|
-
|
|
|
- bool enter = false;
|
|
|
-
|
|
|
- if (state->currentexval == (u32)ARMul_ReadByte(state, state->currentexaddr))enter = true;
|
|
|
-
|
|
|
- BUSUSEDINCPCN;
|
|
|
- if (state->Aborted) {
|
|
|
- TAKEABORT;
|
|
|
- }
|
|
|
-
|
|
|
- if (enter) {
|
|
|
- ARMul_StoreByte(state, lhs, RHS);
|
|
|
- state->Reg[DESTReg] = 0;
|
|
|
- }
|
|
|
- else {
|
|
|
- state->Reg[DESTReg] = 1;
|
|
|
- }
|
|
|
-
|
|
|
- //printf("In %s, strexb not implemented\n", __FUNCTION__);
|
|
|
- UNDEF_LSRBPC;
|
|
|
- /* WRITESDEST (dest); */
|
|
|
- return 1;
|
|
|
- }
|
|
|
- printf ("Unhandled v6 insn: strexb\n");
|
|
|
- break;
|
|
|
- case 0x1d:
|
|
|
- if ((BITS(4, 7)) == 0x9) {
|
|
|
- /* ldrexb */
|
|
|
- u32 lhs = LHS;
|
|
|
- LoadByte(state, instr, lhs, LUNSIGNED);
|
|
|
-
|
|
|
- state->currentexaddr = lhs;
|
|
|
- state->currentexval = (u32)ARMul_ReadByte(state, lhs);
|
|
|
-
|
|
|
- //state->Reg[BITS(12, 15)] = ARMul_LoadByte(state, state->Reg[BITS(16, 19)]);
|
|
|
- //printf("ldrexb\n");
|
|
|
- //printf("instr is %x rm is %d\n", instr, BITS(16, 19));
|
|
|
- //exit(-1);
|
|
|
-
|
|
|
- //printf("In %s, ldrexb not implemented\n", __FUNCTION__);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- printf ("Unhandled v6 insn: ldrexb\n");
|
|
|
- break;
|
|
|
- case 0x1e:
|
|
|
- printf ("Unhandled v6 insn: strexh\n");
|
|
|
- break;
|
|
|
- case 0x1f:
|
|
|
- printf ("Unhandled v6 insn: ldrexh\n");
|
|
|
- break;
|
|
|
- case 0x30:
|
|
|
- printf ("Unhandled v6 insn: movw\n");
|
|
|
- break;
|
|
|
- case 0x32:
|
|
|
- printf ("Unhandled v6 insn: nop/sev/wfe/wfi/yield\n");
|
|
|
- break;
|
|
|
- case 0x34:
|
|
|
- printf ("Unhandled v6 insn: movt\n");
|
|
|
- break;
|
|
|
- case 0x3f:
|
|
|
- printf ("Unhandled v6 insn: rbit\n");
|
|
|
- break;
|
|
|
- case 0x61: // SADD16, SASX, SSAX, and SSUB16
|
|
|
- if ((instr & 0xFF0) == 0xf10 || (instr & 0xFF0) == 0xf30 ||
|
|
|
- (instr & 0xFF0) == 0xf50 || (instr & 0xFF0) == 0xf70)
|
|
|
- {
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const s16 rn_lo = (state->Reg[rn_idx] & 0xFFFF);
|
|
|
- const s16 rn_hi = ((state->Reg[rn_idx] >> 16) & 0xFFFF);
|
|
|
- const s16 rm_lo = (state->Reg[rm_idx] & 0xFFFF);
|
|
|
- const s16 rm_hi = ((state->Reg[rm_idx] >> 16) & 0xFFFF);
|
|
|
-
|
|
|
- s32 lo_result;
|
|
|
- s32 hi_result;
|
|
|
-
|
|
|
- // SADD16
|
|
|
- if ((instr & 0xFF0) == 0xf10) {
|
|
|
- lo_result = (rn_lo + rm_lo);
|
|
|
- hi_result = (rn_hi + rm_hi);
|
|
|
- }
|
|
|
- // SASX
|
|
|
- else if ((instr & 0xFF0) == 0xf30) {
|
|
|
- lo_result = (rn_lo - rm_hi);
|
|
|
- hi_result = (rn_hi + rm_lo);
|
|
|
- }
|
|
|
- // SSAX
|
|
|
- else if ((instr & 0xFF0) == 0xf50) {
|
|
|
- lo_result = (rn_lo + rm_hi);
|
|
|
- hi_result = (rn_hi - rm_lo);
|
|
|
- }
|
|
|
- // SSUB16
|
|
|
- else {
|
|
|
- lo_result = (rn_lo - rm_lo);
|
|
|
- hi_result = (rn_hi - rm_hi);
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16);
|
|
|
-
|
|
|
- if (lo_result >= 0) {
|
|
|
- state->GEFlag |= (1 << 16);
|
|
|
- state->GEFlag |= (1 << 17);
|
|
|
- } else {
|
|
|
- state->GEFlag &= ~(1 << 16);
|
|
|
- state->GEFlag &= ~(1 << 17);
|
|
|
- }
|
|
|
-
|
|
|
- if (hi_result >= 0) {
|
|
|
- state->GEFlag |= (1 << 18);
|
|
|
- state->GEFlag |= (1 << 19);
|
|
|
- } else {
|
|
|
- state->GEFlag &= ~(1 << 18);
|
|
|
- state->GEFlag &= ~(1 << 19);
|
|
|
- }
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- // SADD8/SSUB8
|
|
|
- else if ((instr & 0xFF0) == 0xf90 || (instr & 0xFF0) == 0xff0)
|
|
|
- {
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- s32 lo_val1, lo_val2;
|
|
|
- s32 hi_val1, hi_val2;
|
|
|
-
|
|
|
- // SADD8
|
|
|
- if ((instr & 0xFF0) == 0xf90) {
|
|
|
- lo_val1 = (s32)(s8)(rn_val & 0xFF) + (s32)(s8)(rm_val & 0xFF);
|
|
|
- lo_val2 = (s32)(s8)((rn_val >> 8) & 0xFF) + (s32)(s8)((rm_val >> 8) & 0xFF);
|
|
|
- hi_val1 = (s32)(s8)((rn_val >> 16) & 0xFF) + (s32)(s8)((rm_val >> 16) & 0xFF);
|
|
|
- hi_val2 = (s32)(s8)((rn_val >> 24) & 0xFF) + (s32)(s8)((rm_val >> 24) & 0xFF);
|
|
|
- }
|
|
|
- // SSUB8
|
|
|
- else {
|
|
|
- lo_val1 = (s32)(s8)(rn_val & 0xFF) - (s32)(s8)(rm_val & 0xFF);
|
|
|
- lo_val2 = (s32)(s8)((rn_val >> 8) & 0xFF) - (s32)(s8)((rm_val >> 8) & 0xFF);
|
|
|
- hi_val1 = (s32)(s8)((rn_val >> 16) & 0xFF) - (s32)(s8)((rm_val >> 16) & 0xFF);
|
|
|
- hi_val2 = (s32)(s8)((rn_val >> 24) & 0xFF) - (s32)(s8)((rm_val >> 24) & 0xFF);
|
|
|
- }
|
|
|
-
|
|
|
- if (lo_val1 >= 0)
|
|
|
- state->GEFlag |= (1 << 16);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 16);
|
|
|
-
|
|
|
- if (lo_val2 >= 0)
|
|
|
- state->GEFlag |= (1 << 17);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 17);
|
|
|
-
|
|
|
- if (hi_val1 >= 0)
|
|
|
- state->GEFlag |= (1 << 18);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 18);
|
|
|
-
|
|
|
- if (hi_val2 >= 0)
|
|
|
- state->GEFlag |= (1 << 19);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 19);
|
|
|
-
|
|
|
- state->Reg[rd_idx] = ((lo_val1 & 0xFF) | ((lo_val2 & 0xFF) << 8) | ((hi_val1 & 0xFF) << 16) | ((hi_val2 & 0xFF) << 24));
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else {
|
|
|
- printf("Unhandled v6 insn: %08x", instr);
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x62: // QADD16, QASX, QSAX, QSUB16, QADD8, and QSUB8
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u16 rm_lo = (state->Reg[rm_idx] & 0xFFFF);
|
|
|
- const u16 rm_hi = ((state->Reg[rm_idx] >> 0x10) & 0xFFFF);
|
|
|
- const u16 rn_lo = (state->Reg[rn_idx] & 0xFFFF);
|
|
|
- const u16 rn_hi = ((state->Reg[rn_idx] >> 0x10) & 0xFFFF);
|
|
|
-
|
|
|
- u16 lo_result = 0;
|
|
|
- u16 hi_result = 0;
|
|
|
-
|
|
|
- // QADD16
|
|
|
- if (op2 == 0x00) {
|
|
|
- lo_result = ARMul_SignedSaturatedAdd16(rn_lo, rm_lo);
|
|
|
- hi_result = ARMul_SignedSaturatedAdd16(rn_hi, rm_hi);
|
|
|
- }
|
|
|
- // QASX
|
|
|
- else if (op2 == 0x01) {
|
|
|
- lo_result = ARMul_SignedSaturatedSub16(rn_lo, rm_hi);
|
|
|
- hi_result = ARMul_SignedSaturatedAdd16(rn_hi, rm_lo);
|
|
|
- }
|
|
|
- // QSAX
|
|
|
- else if (op2 == 0x02) {
|
|
|
- lo_result = ARMul_SignedSaturatedAdd16(rn_lo, rm_hi);
|
|
|
- hi_result = ARMul_SignedSaturatedSub16(rn_hi, rm_lo);
|
|
|
- }
|
|
|
- // QSUB16
|
|
|
- else if (op2 == 0x03) {
|
|
|
- lo_result = ARMul_SignedSaturatedSub16(rn_lo, rm_lo);
|
|
|
- hi_result = ARMul_SignedSaturatedSub16(rn_hi, rm_hi);
|
|
|
- }
|
|
|
- // QADD8
|
|
|
- else if (op2 == 0x04) {
|
|
|
- lo_result = ARMul_SignedSaturatedAdd8(rn_lo & 0xFF, rm_lo & 0xFF) |
|
|
|
- ARMul_SignedSaturatedAdd8(rn_lo >> 8, rm_lo >> 8) << 8;
|
|
|
- hi_result = ARMul_SignedSaturatedAdd8(rn_hi & 0xFF, rm_hi & 0xFF) |
|
|
|
- ARMul_SignedSaturatedAdd8(rn_hi >> 8, rm_hi >> 8) << 8;
|
|
|
- }
|
|
|
- // QSUB8
|
|
|
- else if (op2 == 0x07) {
|
|
|
- lo_result = ARMul_SignedSaturatedSub8(rn_lo & 0xFF, rm_lo & 0xFF) |
|
|
|
- ARMul_SignedSaturatedSub8(rn_lo >> 8, rm_lo >> 8) << 8;
|
|
|
- hi_result = ARMul_SignedSaturatedSub8(rn_hi & 0xFF, rm_hi & 0xFF) |
|
|
|
- ARMul_SignedSaturatedSub8(rn_hi >> 8, rm_hi >> 8) << 8;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (lo_result & 0xFFFF) | ((hi_result & 0xFFFF) << 16);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x63:
|
|
|
- printf ("Unhandled v6 insn: shadd/shsub\n");
|
|
|
- break;
|
|
|
- case 0x65:
|
|
|
- {
|
|
|
- u32 rd = (instr >> 12) & 0xF;
|
|
|
- u32 rn = (instr >> 16) & 0xF;
|
|
|
- u32 rm = (instr >> 0) & 0xF;
|
|
|
- u32 from = state->Reg[rn];
|
|
|
- u32 to = state->Reg[rm];
|
|
|
-
|
|
|
- if ((instr & 0xFF0) == 0xF10 || (instr & 0xFF0) == 0xF70) { // UADD16/USUB16
|
|
|
- u32 h1, h2;
|
|
|
- state->Cpsr &= 0xfff0ffff;
|
|
|
- if ((instr & 0x0F0) == 0x070) { // USUB16
|
|
|
- h1 = ((u16)from - (u16)to);
|
|
|
- h2 = ((u16)(from >> 16) - (u16)(to >> 16));
|
|
|
-
|
|
|
- if (!(h1 & 0xffff0000))
|
|
|
- state->GEFlag |= (3 << 16);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(3 << 16);
|
|
|
-
|
|
|
- if (!(h2 & 0xffff0000))
|
|
|
- state->GEFlag |= (3 << 18);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(3 << 18);
|
|
|
- }
|
|
|
- else { // UADD16
|
|
|
- h1 = ((u16)from + (u16)to);
|
|
|
- h2 = ((u16)(from >> 16) + (u16)(to >> 16));
|
|
|
-
|
|
|
- if (h1 & 0xffff0000)
|
|
|
- state->GEFlag |= (3 << 16);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(3 << 16);
|
|
|
-
|
|
|
- if (h2 & 0xffff0000)
|
|
|
- state->GEFlag |= (3 << 18);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(3 << 18);
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd] = (u32)((h1 & 0xffff) | ((h2 & 0xffff) << 16));
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else
|
|
|
- if ((instr & 0xFF0) == 0xF90 || (instr & 0xFF0) == 0xFF0) { // UADD8/USUB8
|
|
|
- u32 b1, b2, b3, b4;
|
|
|
- state->Cpsr &= 0xfff0ffff;
|
|
|
- if ((instr & 0x0F0) == 0x0F0) { // USUB8
|
|
|
- b1 = ((u8)from - (u8)to);
|
|
|
- b2 = ((u8)(from >> 8) - (u8)(to >> 8));
|
|
|
- b3 = ((u8)(from >> 16) - (u8)(to >> 16));
|
|
|
- b4 = ((u8)(from >> 24) - (u8)(to >> 24));
|
|
|
-
|
|
|
- if (!(b1 & 0xffffff00))
|
|
|
- state->GEFlag |= (1 << 16);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 16);
|
|
|
-
|
|
|
- if (!(b2 & 0xffffff00))
|
|
|
- state->GEFlag |= (1 << 17);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 17);
|
|
|
-
|
|
|
- if (!(b3 & 0xffffff00))
|
|
|
- state->GEFlag |= (1 << 18);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 18);
|
|
|
-
|
|
|
- if (!(b4 & 0xffffff00))
|
|
|
- state->GEFlag |= (1 << 19);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 19);
|
|
|
- }
|
|
|
- else { // UADD8
|
|
|
- b1 = ((u8)from + (u8)to);
|
|
|
- b2 = ((u8)(from >> 8) + (u8)(to >> 8));
|
|
|
- b3 = ((u8)(from >> 16) + (u8)(to >> 16));
|
|
|
- b4 = ((u8)(from >> 24) + (u8)(to >> 24));
|
|
|
-
|
|
|
- if (b1 & 0xffffff00)
|
|
|
- state->GEFlag |= (1 << 16);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 16);
|
|
|
-
|
|
|
- if (b2 & 0xffffff00)
|
|
|
- state->GEFlag |= (1 << 17);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 17);
|
|
|
-
|
|
|
- if (b3 & 0xffffff00)
|
|
|
- state->GEFlag |= (1 << 18);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 18);
|
|
|
-
|
|
|
- if (b4 & 0xffffff00)
|
|
|
- state->GEFlag |= (1 << 19);
|
|
|
- else
|
|
|
- state->GEFlag &= ~(1 << 19);
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd] = (u32)(b1 | (b2 & 0xff) << 8 | (b3 & 0xff) << 16 | (b4 & 0xff) << 24);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
- printf("Unhandled v6 insn: uasx/usax\n");
|
|
|
- break;
|
|
|
- case 0x66: // UQADD16, UQASX, UQSAX, UQSUB16, UQADD8, and UQSUB8
|
|
|
- {
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- u16 lo_val = 0;
|
|
|
- u16 hi_val = 0;
|
|
|
-
|
|
|
- // UQADD16
|
|
|
- if (op2 == 0x00) {
|
|
|
- lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, rm_val & 0xFFFF);
|
|
|
- hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
|
|
|
- }
|
|
|
- // UQASX
|
|
|
- else if (op2 == 0x01) {
|
|
|
- lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
|
|
|
- hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
|
|
|
- }
|
|
|
- // UQSAX
|
|
|
- else if (op2 == 0x02) {
|
|
|
- lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
|
|
|
- hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
|
|
|
- }
|
|
|
- // UQSUB16
|
|
|
- else if (op2 == 0x03) {
|
|
|
- lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, rm_val & 0xFFFF);
|
|
|
- hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
|
|
|
- }
|
|
|
- // UQADD8
|
|
|
- else if (op2 == 0x04) {
|
|
|
- lo_val = ARMul_UnsignedSaturatedAdd8(rn_val, rm_val) |
|
|
|
- ARMul_UnsignedSaturatedAdd8(rn_val >> 8, rm_val >> 8) << 8;
|
|
|
- hi_val = ARMul_UnsignedSaturatedAdd8(rn_val >> 16, rm_val >> 16) |
|
|
|
- ARMul_UnsignedSaturatedAdd8(rn_val >> 24, rm_val >> 24) << 8;
|
|
|
- }
|
|
|
- // UQSUB8
|
|
|
- else {
|
|
|
- lo_val = ARMul_UnsignedSaturatedSub8(rn_val, rm_val) |
|
|
|
- ARMul_UnsignedSaturatedSub8(rn_val >> 8, rm_val >> 8) << 8;
|
|
|
- hi_val = ARMul_UnsignedSaturatedSub8(rn_val >> 16, rm_val >> 16) |
|
|
|
- ARMul_UnsignedSaturatedSub8(rn_val >> 24, rm_val >> 24) << 8;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd_idx] = ((lo_val & 0xFFFF) | hi_val << 16);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x67: // UHADD16, UHASX, UHSAX, UHSUB16, UHADD8, and UHSUB8.
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
-
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- if (op2 == 0x00 || op2 == 0x01 || op2 == 0x02 || op2 == 0x03)
|
|
|
- {
|
|
|
- u32 lo_val = 0;
|
|
|
- u32 hi_val = 0;
|
|
|
-
|
|
|
- // UHADD16
|
|
|
- if (op2 == 0x00) {
|
|
|
- lo_val = (rn_val & 0xFFFF) + (rm_val & 0xFFFF);
|
|
|
- hi_val = ((rn_val >> 16) & 0xFFFF) + ((rm_val >> 16) & 0xFFFF);
|
|
|
- }
|
|
|
- // UHASX
|
|
|
- else if (op2 == 0x01) {
|
|
|
- lo_val = (rn_val & 0xFFFF) - ((rm_val >> 16) & 0xFFFF);
|
|
|
- hi_val = ((rn_val >> 16) & 0xFFFF) + (rm_val & 0xFFFF);
|
|
|
- }
|
|
|
- // UHSAX
|
|
|
- else if (op2 == 0x02) {
|
|
|
- lo_val = (rn_val & 0xFFFF) + ((rm_val >> 16) & 0xFFFF);
|
|
|
- hi_val = ((rn_val >> 16) & 0xFFFF) - (rm_val & 0xFFFF);
|
|
|
- }
|
|
|
- // UHSUB16
|
|
|
- else if (op2 == 0x03) {
|
|
|
- lo_val = (rn_val & 0xFFFF) - (rm_val & 0xFFFF);
|
|
|
- hi_val = ((rn_val >> 16) & 0xFFFF) - ((rm_val >> 16) & 0xFFFF);
|
|
|
- }
|
|
|
-
|
|
|
- lo_val >>= 1;
|
|
|
- hi_val >>= 1;
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (lo_val & 0xFFFF) | ((hi_val & 0xFFFF) << 16);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else if (op2 == 0x04 || op2 == 0x07) {
|
|
|
- u32 sum1;
|
|
|
- u32 sum2;
|
|
|
- u32 sum3;
|
|
|
- u32 sum4;
|
|
|
-
|
|
|
- // UHADD8
|
|
|
- if (op2 == 0x04) {
|
|
|
- sum1 = (rn_val & 0xFF) + (rm_val & 0xFF);
|
|
|
- sum2 = ((rn_val >> 8) & 0xFF) + ((rm_val >> 8) & 0xFF);
|
|
|
- sum3 = ((rn_val >> 16) & 0xFF) + ((rm_val >> 16) & 0xFF);
|
|
|
- sum4 = ((rn_val >> 24) & 0xFF) + ((rm_val >> 24) & 0xFF);
|
|
|
- }
|
|
|
- // UHSUB8
|
|
|
- else {
|
|
|
- sum1 = (rn_val & 0xFF) - (rm_val & 0xFF);
|
|
|
- sum2 = ((rn_val >> 8) & 0xFF) - ((rm_val >> 8) & 0xFF);
|
|
|
- sum3 = ((rn_val >> 16) & 0xFF) - ((rm_val >> 16) & 0xFF);
|
|
|
- sum4 = ((rn_val >> 24) & 0xFF) - ((rm_val >> 24) & 0xFF);
|
|
|
- }
|
|
|
-
|
|
|
- sum1 >>= 1;
|
|
|
- sum2 >>= 1;
|
|
|
- sum3 >>= 1;
|
|
|
- sum4 >>= 1;
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (sum1 & 0xFF) | ((sum2 & 0xFF) << 8) | ((sum3 & 0xFF) << 16) | ((sum4 & 0xFF) << 24);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x68:
|
|
|
- {
|
|
|
- u32 rd = (instr >> 12) & 0xF;
|
|
|
- u32 rn = (instr >> 16) & 0xF;
|
|
|
- u32 rm = (instr >> 0) & 0xF;
|
|
|
- u32 from = state->Reg[rn];
|
|
|
- u32 to = state->Reg[rm];
|
|
|
- u32 cpsr = ARMul_GetCPSR(state);
|
|
|
- if ((instr & 0xFF0) == 0xFB0) { // SEL
|
|
|
- u32 result;
|
|
|
- if (cpsr & (1 << 16))
|
|
|
- result = from & 0xff;
|
|
|
- else
|
|
|
- result = to & 0xff;
|
|
|
- if (cpsr & (1 << 17))
|
|
|
- result |= from & 0x0000ff00;
|
|
|
- else
|
|
|
- result |= to & 0x0000ff00;
|
|
|
- if (cpsr & (1 << 18))
|
|
|
- result |= from & 0x00ff0000;
|
|
|
- else
|
|
|
- result |= to & 0x00ff0000;
|
|
|
- if (cpsr & (1 << 19))
|
|
|
- result |= from & 0xff000000;
|
|
|
- else
|
|
|
- result |= to & 0xff000000;
|
|
|
- state->Reg[rd] = result;
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
- printf("Unhandled v6 insn: pkh/sxtab/selsxtb\n");
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6a: // SSAT, SSAT16, SXTB, and SXTAB
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- // SSAT16
|
|
|
- if (op2 == 0x01) {
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 num_bits = BITS(16, 19) + 1;
|
|
|
- const s16 min = -(0x8000 >> (16 - num_bits));
|
|
|
- const s16 max = (0x7FFF >> (16 - num_bits));
|
|
|
- s16 rn_lo = (state->Reg[rn_idx]);
|
|
|
- s16 rn_hi = (state->Reg[rn_idx] >> 16);
|
|
|
-
|
|
|
- if (rn_lo > max) {
|
|
|
- rn_lo = max;
|
|
|
- SETQ;
|
|
|
- } else if (rn_lo < min) {
|
|
|
- rn_lo = min;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- if (rn_hi > max) {
|
|
|
- rn_hi = max;
|
|
|
- SETQ;
|
|
|
- } else if (rn_hi < min) {
|
|
|
- rn_hi = min;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (rn_lo & 0xFFFF) | ((rn_hi & 0xFFFF) << 16);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else if (op2 == 0x03) {
|
|
|
- const u8 rotation = BITS(10, 11) * 8;
|
|
|
- u32 rm = ((state->Reg[BITS(0, 3)] >> rotation) & 0xFF) | (((state->Reg[BITS(0, 3)] << (32 - rotation)) & 0xFF) & 0xFF);
|
|
|
- if (rm & 0x80)
|
|
|
- rm |= 0xffffff00;
|
|
|
-
|
|
|
- // SXTB, otherwise SXTAB
|
|
|
- if (BITS(16, 19) == 0xf)
|
|
|
- state->Reg[BITS(12, 15)] = rm;
|
|
|
- else
|
|
|
- state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + rm;
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else {
|
|
|
- printf("Unimplemented op: SSAT");
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6b: // REV, REV16, SXTH, and SXTAH
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- // REV
|
|
|
- if (op2 == 0x01) {
|
|
|
- DEST = ((RHS & 0xFF) << 24) | ((RHS & 0xFF00)) << 8 | ((RHS & 0xFF0000) >> 8) | ((RHS & 0xFF000000) >> 24);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- // REV16
|
|
|
- else if (op2 == 0x05) {
|
|
|
- DEST = ((RHS & 0xFF) << 8) | ((RHS & 0xFF00)) >> 8 | ((RHS & 0xFF0000) << 8) | ((RHS & 0xFF000000) >> 8);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else if (op2 == 0x03) {
|
|
|
- const u8 rotate = BITS(10, 11) * 8;
|
|
|
-
|
|
|
- u32 rm = ((state->Reg[BITS(0, 3)] >> rotate) & 0xFFFF) | (((state->Reg[BITS(0, 3)] << (32 - rotate)) & 0xFFFF) & 0xFFFF);
|
|
|
- if (rm & 0x8000)
|
|
|
- rm |= 0xffff0000;
|
|
|
-
|
|
|
- // SXTH, otherwise SXTAH
|
|
|
- if (BITS(16, 19) == 15)
|
|
|
- state->Reg[BITS(12, 15)] = rm;
|
|
|
- else
|
|
|
- state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + rm;
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6c: // UXTB16 and UXTAB16
|
|
|
- {
|
|
|
- const u8 rm_idx = BITS(0, 3);
|
|
|
- const u8 rn_idx = BITS(16, 19);
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
- const u32 rotation = BITS(10, 11) * 8;
|
|
|
- const u32 rotated_rm = ((rm_val << (32 - rotation)) | (rm_val >> rotation));
|
|
|
-
|
|
|
- // UXTB16
|
|
|
- if ((instr & 0xf03f0) == 0xf0070) {
|
|
|
- state->Reg[rd_idx] = rotated_rm & 0x00FF00FF;
|
|
|
- }
|
|
|
- else { // UXTAB16
|
|
|
- const u8 lo_rotated = (rotated_rm & 0xFF);
|
|
|
- const u16 lo_result = (rn_val & 0xFFFF) + (u16)lo_rotated;
|
|
|
-
|
|
|
- const u8 hi_rotated = (rotated_rm >> 16) & 0xFF;
|
|
|
- const u16 hi_result = (rn_val >> 16) + (u16)hi_rotated;
|
|
|
-
|
|
|
- state->Reg[rd_idx] = ((hi_result << 16) | (lo_result & 0xFFFF));
|
|
|
- }
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x6e: // USAT, USAT16, UXTB, and UXTAB
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- // USAT16
|
|
|
- if (op2 == 0x01) {
|
|
|
- const u8 rd_idx = BITS(12, 15);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 num_bits = BITS(16, 19);
|
|
|
- const s16 max = 0xFFFF >> (16 - num_bits);
|
|
|
- s16 rn_lo = (state->Reg[rn_idx]);
|
|
|
- s16 rn_hi = (state->Reg[rn_idx] >> 16);
|
|
|
-
|
|
|
- if (max < rn_lo) {
|
|
|
- rn_lo = max;
|
|
|
- SETQ;
|
|
|
- } else if (rn_lo < 0) {
|
|
|
- rn_lo = 0;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- if (max < rn_hi) {
|
|
|
- rn_hi = max;
|
|
|
- SETQ;
|
|
|
- } else if (rn_hi < 0) {
|
|
|
- rn_hi = 0;
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rd_idx] = (rn_lo & 0xFFFF) | ((rn_hi << 16) & 0xFFFF);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else if (op2 == 0x03) {
|
|
|
- const u8 rotate = BITS(10, 11) * 8;
|
|
|
- const u32 rm = ((state->Reg[BITS(0, 3)] >> rotate) & 0xFF) | (((state->Reg[BITS(0, 3)] << (32 - rotate)) & 0xFF) & 0xFF);
|
|
|
-
|
|
|
- if (BITS(16, 19) == 0xf)
|
|
|
- /* UXTB */
|
|
|
- state->Reg[BITS(12, 15)] = rm;
|
|
|
- else
|
|
|
- /* UXTAB */
|
|
|
- state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + rm;
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- else {
|
|
|
- printf("Unimplemented op: USAT");
|
|
|
- }
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case 0x6f: // UXTH, UXTAH, and REVSH.
|
|
|
- {
|
|
|
- const u8 op2 = BITS(5, 7);
|
|
|
-
|
|
|
- // REVSH
|
|
|
- if (op2 == 0x05) {
|
|
|
- DEST = ((RHS & 0xFF) << 8) | ((RHS & 0xFF00) >> 8);
|
|
|
- if (DEST & 0x8000)
|
|
|
- DEST |= 0xffff0000;
|
|
|
- return 1;
|
|
|
- }
|
|
|
- // UXTH and UXTAH
|
|
|
- else if (op2 == 0x03) {
|
|
|
- const u8 rotate = BITS(10, 11) * 8;
|
|
|
- const ARMword rm = ((state->Reg[BITS(0, 3)] >> rotate) & 0xFFFF) | (((state->Reg[BITS(0, 3)] << (32 - rotate)) & 0xFFFF) & 0xFFFF);
|
|
|
-
|
|
|
- // UXTH
|
|
|
- if (BITS(16, 19) == 0xf) {
|
|
|
- state->Reg[BITS(12, 15)] = rm;
|
|
|
- }
|
|
|
- // UXTAH
|
|
|
- else {
|
|
|
- state->Reg[BITS(12, 15)] = state->Reg[BITS(16, 19)] + rm;
|
|
|
- }
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- }
|
|
|
- case 0x70:
|
|
|
- // ichfly
|
|
|
- // SMUAD, SMUSD, SMLAD, and SMLSD
|
|
|
- if ((instr & 0xf0d0) == 0xf010 || (instr & 0xf0d0) == 0xf050 ||
|
|
|
- (instr & 0xd0) == 0x10 || (instr & 0xd0) == 0x50)
|
|
|
- {
|
|
|
- const u8 rd_idx = BITS(16, 19);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 rm_idx = BITS(8, 11);
|
|
|
- const u8 ra_idx = BITS(12, 15);
|
|
|
- const bool do_swap = (BIT(5) == 1);
|
|
|
-
|
|
|
- u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- if (do_swap)
|
|
|
- rm_val = (((rm_val & 0xFFFF) << 16) | (rm_val >> 16));
|
|
|
-
|
|
|
- const s16 rm_lo = (rm_val & 0xFFFF);
|
|
|
- const s16 rm_hi = ((rm_val >> 16) & 0xFFFF);
|
|
|
- const s16 rn_lo = (rn_val & 0xFFFF);
|
|
|
- const s16 rn_hi = ((rn_val >> 16) & 0xFFFF);
|
|
|
-
|
|
|
- const u32 product1 = (rn_lo * rm_lo);
|
|
|
- const u32 product2 = (rn_hi * rm_hi);
|
|
|
-
|
|
|
- // SMUAD and SMLAD
|
|
|
- if (BIT(6) == 0) {
|
|
|
- state->Reg[rd_idx] = product1 + product2;
|
|
|
-
|
|
|
- if (BITS(12, 15) != 15) {
|
|
|
- state->Reg[rd_idx] += state->Reg[ra_idx];
|
|
|
- if (ARMul_AddOverflowQ(product1 + product2, state->Reg[ra_idx]))
|
|
|
- SETQ;
|
|
|
- }
|
|
|
-
|
|
|
- if (ARMul_AddOverflowQ(product1, product2))
|
|
|
- SETQ;
|
|
|
- }
|
|
|
- // SMUSD and SMLSD
|
|
|
- else {
|
|
|
- state->Reg[rd_idx] = product1 - product2;
|
|
|
-
|
|
|
- if (BITS(12, 15) != 15) {
|
|
|
- state->Reg[rd_idx] += state->Reg[ra_idx];
|
|
|
-
|
|
|
- if (ARMul_AddOverflowQ(product1 - product2, state->Reg[ra_idx]))
|
|
|
- SETQ;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x74: // SMLALD and SMLSLD
|
|
|
- {
|
|
|
- const u8 rm_idx = BITS(8, 11);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 rdlo_idx = BITS(12, 15);
|
|
|
- const u8 rdhi_idx = BITS(16, 19);
|
|
|
- const bool do_swap = (BIT(5) == 1);
|
|
|
-
|
|
|
- const u32 rdlo_val = state->Reg[rdlo_idx];
|
|
|
- const u32 rdhi_val = state->Reg[rdhi_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
- u32 rm_val = state->Reg[rm_idx];
|
|
|
-
|
|
|
- if (do_swap)
|
|
|
- rm_val = (((rm_val & 0xFFFF) << 16) | (rm_val >> 16));
|
|
|
-
|
|
|
- const s32 product1 = (s16)(rn_val & 0xFFFF) * (s16)(rm_val & 0xFFFF);
|
|
|
- const s32 product2 = (s16)((rn_val >> 16) & 0xFFFF) * (s16)((rm_val >> 16) & 0xFFFF);
|
|
|
- s64 result;
|
|
|
-
|
|
|
- // SMLALD
|
|
|
- if (BIT(6) == 0) {
|
|
|
- result = (product1 + product2) + (s64)(rdlo_val | ((s64)rdhi_val << 32));
|
|
|
- }
|
|
|
- // SMLSLD
|
|
|
- else {
|
|
|
- result = (product1 - product2) + (s64)(rdlo_val | ((s64)rdhi_val << 32));
|
|
|
- }
|
|
|
-
|
|
|
- state->Reg[rdlo_idx] = (result & 0xFFFFFFFF);
|
|
|
- state->Reg[rdhi_idx] = ((result >> 32) & 0xFFFFFFFF);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x75: // SMMLA, SMMUL, and SMMLS
|
|
|
- {
|
|
|
- const u8 rm_idx = BITS(8, 11);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 ra_idx = BITS(12, 15);
|
|
|
- const u8 rd_idx = BITS(16, 19);
|
|
|
- const bool do_round = (BIT(5) == 1);
|
|
|
-
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- // Assume SMMUL by default.
|
|
|
- s64 result = (s64)(s32)rn_val * (s64)(s32)rm_val;
|
|
|
-
|
|
|
- if (ra_idx != 15) {
|
|
|
- const u32 ra_val = state->Reg[ra_idx];
|
|
|
-
|
|
|
- // SMMLA, otherwise SMMLS
|
|
|
- if (BIT(6) == 0)
|
|
|
- result += ((s64)ra_val << 32);
|
|
|
- else
|
|
|
- result = ((s64)ra_val << 32) - result;
|
|
|
- }
|
|
|
-
|
|
|
- if (do_round)
|
|
|
- result += 0x80000000;
|
|
|
-
|
|
|
- state->Reg[rd_idx] = ((result >> 32) & 0xFFFFFFFF);
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x78:
|
|
|
- if (BITS(20, 24) == 0x18)
|
|
|
- {
|
|
|
- const u8 rm_idx = BITS(8, 11);
|
|
|
- const u8 rn_idx = BITS(0, 3);
|
|
|
- const u8 rd_idx = BITS(16, 19);
|
|
|
-
|
|
|
- const u32 rm_val = state->Reg[rm_idx];
|
|
|
- const u32 rn_val = state->Reg[rn_idx];
|
|
|
-
|
|
|
- const u8 diff1 = ARMul_UnsignedAbsoluteDifference(rn_val & 0xFF, rm_val & 0xFF);
|
|
|
- const u8 diff2 = ARMul_UnsignedAbsoluteDifference((rn_val >> 8) & 0xFF, (rm_val >> 8) & 0xFF);
|
|
|
- const u8 diff3 = ARMul_UnsignedAbsoluteDifference((rn_val >> 16) & 0xFF, (rm_val >> 16) & 0xFF);
|
|
|
- const u8 diff4 = ARMul_UnsignedAbsoluteDifference((rn_val >> 24) & 0xFF, (rm_val >> 24) & 0xFF);
|
|
|
-
|
|
|
- u32 finalDif = (diff1 + diff2 + diff3 + diff4);
|
|
|
-
|
|
|
- // Op is USADA8 if true.
|
|
|
- const u8 ra_idx = BITS(12, 15);
|
|
|
- if (ra_idx != 15)
|
|
|
- finalDif += state->Reg[ra_idx];
|
|
|
-
|
|
|
- state->Reg[rd_idx] = finalDif;
|
|
|
- return 1;
|
|
|
- }
|
|
|
- break;
|
|
|
- case 0x7a:
|
|
|
- printf ("Unhandled v6 insn: usbfx\n");
|
|
|
- break;
|
|
|
- case 0x7c:
|
|
|
- printf ("Unhandled v6 insn: bfc/bfi\n");
|
|
|
- break;
|
|
|
- case 0x84:
|
|
|
- printf ("Unhandled v6 insn: srs\n");
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
- printf("Unhandled v6 insn: UNKNOWN: %08x %08X\n", instr, BITS(20, 27));
|
|
|
- return 0;
|
|
|
- }
|