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dyncom: Handle left-operand PC correctly for data-processing ops

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This is considered deprecated in the ARM manual (using PC as an operand),
however, this is still able to be executed on the MPCore (which I'm quite
sure would be rare to begin with).
This commit is contained in:
Lioncash 2015-07-28 20:06:48 -04:00
parent 4ccc171db4
commit 2182adff9e
1 changed files with 33 additions and 7 deletions
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40
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
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@ -3924,9 +3924,13 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
adc_inst* const inst_cream = (adc_inst*)inst_base->component; adc_inst* const inst_cream = (adc_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * cpu->GetInstructionSize();
bool carry; bool carry;
bool overflow; bool overflow;
RD = AddWithCarry(RN, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow); RD = AddWithCarry(rn_val, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) { if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) { if (CurrentModeHasSPSR) {
@ -3987,11 +3991,17 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
} }
AND_INST: AND_INST:
{ {
and_inst *inst_cream = (and_inst *)inst_base->component; if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { and_inst* const inst_cream = (and_inst*)inst_base->component;
u32 lop = RN; u32 lop = RN;
u32 rop = SHIFTER_OPERAND; u32 rop = SHIFTER_OPERAND;
if (inst_cream->Rn == 15)
lop += 2 * cpu->GetInstructionSize();
RD = lop & rop; RD = lop & rop;
if (inst_cream->S && (inst_cream->Rd == 15)) { if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) { if (CurrentModeHasSPSR) {
cpu->Cpsr = cpu->Spsr_copy; cpu->Cpsr = cpu->Spsr_copy;
@ -4164,9 +4174,13 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
cmn_inst* const inst_cream = (cmn_inst*)inst_base->component; cmn_inst* const inst_cream = (cmn_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * cpu->GetInstructionSize();
bool carry; bool carry;
bool overflow; bool overflow;
u32 result = AddWithCarry(RN, SHIFTER_OPERAND, 0, &carry, &overflow); u32 result = AddWithCarry(rn_val, SHIFTER_OPERAND, 0, &carry, &overflow);
UPDATE_NFLAG(result); UPDATE_NFLAG(result);
UPDATE_ZFLAG(result); UPDATE_ZFLAG(result);
@ -4905,6 +4919,10 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
u32 lop = RN; u32 lop = RN;
u32 rop = SHIFTER_OPERAND; u32 rop = SHIFTER_OPERAND;
if (inst_cream->Rn == 15)
lop += 2 * cpu->GetInstructionSize();
RD = lop | rop; RD = lop | rop;
if (inst_cream->S && (inst_cream->Rd == 15)) { if (inst_cream->S && (inst_cream->Rd == 15)) {
@ -5195,9 +5213,13 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
rsc_inst* const inst_cream = (rsc_inst*)inst_base->component; rsc_inst* const inst_cream = (rsc_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * cpu->GetInstructionSize();
bool carry; bool carry;
bool overflow; bool overflow;
RD = AddWithCarry(~RN, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow); RD = AddWithCarry(~rn_val, SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) { if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) { if (CurrentModeHasSPSR) {
@ -5335,9 +5357,13 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) { if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
sbc_inst* const inst_cream = (sbc_inst*)inst_base->component; sbc_inst* const inst_cream = (sbc_inst*)inst_base->component;
u32 rn_val = RN;
if (inst_cream->Rn == 15)
rn_val += 2 * cpu->GetInstructionSize();
bool carry; bool carry;
bool overflow; bool overflow;
RD = AddWithCarry(RN, ~SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow); RD = AddWithCarry(rn_val, ~SHIFTER_OPERAND, cpu->CFlag, &carry, &overflow);
if (inst_cream->S && (inst_cream->Rd == 15)) { if (inst_cream->S && (inst_cream->Rd == 15)) {
if (CurrentModeHasSPSR) { if (CurrentModeHasSPSR) {
@ -6171,7 +6197,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
u32 rn_val = RN; u32 rn_val = RN;
if (inst_cream->Rn == 15) if (inst_cream->Rn == 15)
rn_val += 8; rn_val += 2 * cpu->GetInstructionSize();
bool carry; bool carry;
bool overflow; bool overflow;