diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/arm/interpreter/arminit.cpp | 136 |
1 files changed, 8 insertions, 128 deletions
diff --git a/src/core/arm/interpreter/arminit.cpp b/src/core/arm/interpreter/arminit.cpp index 8ab5ef160..a0e041fa0 100644 --- a/src/core/arm/interpreter/arminit.cpp +++ b/src/core/arm/interpreter/arminit.cpp @@ -25,24 +25,13 @@ void ARMul_EmulateInit(); ARMul_State* ARMul_NewState(ARMul_State* state); void ARMul_Reset (ARMul_State* state); -ARMword ARMul_DoCycle(ARMul_State* state); -unsigned ARMul_DoCoPro(ARMul_State* state); -ARMword ARMul_DoProg(ARMul_State* state); -ARMword ARMul_DoInstr(ARMul_State* state); -void ARMul_Abort(ARMul_State* state, ARMword address); unsigned ARMul_MultTable[32] = { 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 16 }; -ARMword ARMul_ImmedTable[4096]; /* immediate DP LHS values */ -char ARMul_BitList[256]; /* number of bits in a byte table */ - -void arm_dyncom_Abort(ARMul_State * state, ARMword vector) -{ - ARMul_Abort(state, vector); -} - +ARMword ARMul_ImmedTable[4096]; // immediate DP LHS values +char ARMul_BitList[256]; // number of bits in a byte table /***************************************************************************\ * Call this routine once to set up the emulator's tables. * @@ -51,18 +40,21 @@ void ARMul_EmulateInit() { unsigned int i, j; - for (i = 0; i < 4096; i++) { /* the values of 12 bit dp rhs's */ + // the values of 12 bit dp rhs's + for (i = 0; i < 4096; i++) { ARMul_ImmedTable[i] = ROTATER (i & 0xffL, (i >> 7L) & 0x1eL); } - for (i = 0; i < 256; ARMul_BitList[i++] = 0); /* how many bits in LSM */ + // how many bits in LSM + for (i = 0; i < 256; ARMul_BitList[i++] = 0); for (j = 1; j < 256; j <<= 1) for (i = 0; i < 256; i++) if ((i & j) > 0) ARMul_BitList[i]++; + // you always need 4 times these values for (i = 0; i < 256; i++) - ARMul_BitList[i] *= 4; /* you always need 4 times these values */ + ARMul_BitList[i] *= 4; } @@ -178,115 +170,3 @@ void ARMul_Reset(ARMul_State* state) state->NumCcycles = 0; state->NumFcycles = 0; } - - -/***************************************************************************\ -* Emulate the execution of an entire program. Start the correct emulator * -* (Emulate26 for a 26 bit ARM and Emulate32 for a 32 bit ARM), return the * -* address of the last instruction that is executed. * -\***************************************************************************/ -ARMword ARMul_DoProg(ARMul_State* state) -{ - ARMword pc = 0; - - state->Emulate = RUN; - while (state->Emulate != STOP) { - state->Emulate = RUN; - - if (state->prog32Sig && ARMul_MODE32BIT) { - pc = ARMul_Emulate32 (state); - } - else { - //pc = ARMul_Emulate26 (state); - } - } - - return pc; -} - -/***************************************************************************\ -* Emulate the execution of one instruction. Start the correct emulator * -* (Emulate26 for a 26 bit ARM and Emulate32 for a 32 bit ARM), return the * -* address of the instruction that is executed. * -\***************************************************************************/ -ARMword ARMul_DoInstr(ARMul_State* state) -{ - ARMword pc = 0; - - state->Emulate = ONCE; - - if (state->prog32Sig && ARMul_MODE32BIT) { - pc = ARMul_Emulate32 (state); - } - - return pc; -} - -/***************************************************************************\ -* This routine causes an Abort to occur, including selecting the correct * -* mode, register bank, and the saving of registers. Call with the * -* appropriate vector's memory address (0,4,8 ....) * -\***************************************************************************/ -void ARMul_Abort(ARMul_State* state, ARMword vector) -{ - ARMword temp; - int isize = INSN_SIZE; - int esize = (TFLAG ? 0 : 4); - int e2size = (TFLAG ? -4 : 0); - - state->Aborted = FALSE; - - if (state->prog32Sig) - if (ARMul_MODE26BIT) - temp = R15PC; - else - temp = state->Reg[15]; - else - temp = R15PC | ECC | ER15INT | EMODE; - - switch (vector) { - case ARMul_ResetV: /* RESET */ - SETABORT (INTBITS, state->prog32Sig ? SVC32MODE : SVC26MODE, - 0); - break; - case ARMul_UndefinedInstrV: /* Undefined Instruction */ - SETABORT (IBIT, state->prog32Sig ? UNDEF32MODE : SVC26MODE, - isize); - break; - case ARMul_SWIV: /* Software Interrupt */ - SETABORT (IBIT, state->prog32Sig ? SVC32MODE : SVC26MODE, - isize); - break; - case ARMul_PrefetchAbortV: /* Prefetch Abort */ - state->AbortAddr = 1; - SETABORT (IBIT, state->prog32Sig ? ABORT32MODE : SVC26MODE, - esize); - break; - case ARMul_DataAbortV: /* Data Abort */ - SETABORT (IBIT, state->prog32Sig ? ABORT32MODE : SVC26MODE, - e2size); - break; - case ARMul_AddrExceptnV: /* Address Exception */ - SETABORT (IBIT, SVC26MODE, isize); - break; - case ARMul_IRQV: /* IRQ */ - SETABORT (IBIT, - state->prog32Sig ? IRQ32MODE : IRQ26MODE, - esize); - break; - case ARMul_FIQV: /* FIQ */ - SETABORT (INTBITS, - state->prog32Sig ? FIQ32MODE : FIQ26MODE, - esize); - break; - } - - if (ARMul_MODE32BIT) { - /*if (state->mmu.control & CONTROL_VECTOR) - vector += 0xffff0000; //for v4 high exception address*/ - if (state->vector_remap_flag) - vector += state->vector_remap_addr; /* support some remap function in LPC processor */ - ARMul_SetR15 (state, vector); - } else - ARMul_SetR15 (state, R15CCINTMODE | vector); -} |