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dingusppc
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ppcfpopcodes: Fix stfs*. 

It should try to convert its operand to a single precision
floating point number at least.
This commit is contained in:
joevt 2024-01-01 04:43:46 -08:00 committed by Maxim Poliakovski
parent cb85d358d1
commit bd419912b5
1 changed files with 8 additions and 4 deletions
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12
cpu/ppc/ppcfpopcodes.cpp
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@ -779,7 +779,8 @@ void dppc_interpreter::ppc_stfs() {
ppc_grab_regsfpsia();
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += (reg_a) ? val_reg_a : 0;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(ppc_state.fpr[reg_s].int64_r));
float result = ppc_state.fpr[reg_s].dbl64_r;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(result));
}
void dppc_interpreter::ppc_stfsu() {
@ -787,7 +788,8 @@ void dppc_interpreter::ppc_stfsu() {
if (reg_a != 0) {
ppc_effective_address = (int32_t)((int16_t)(ppc_cur_instruction & 0xFFFF));
ppc_effective_address += val_reg_a;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(ppc_state.fpr[reg_s].int64_r));
float result = ppc_state.fpr[reg_s].dbl64_r;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(result));
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);
@ -797,14 +799,16 @@ void dppc_interpreter::ppc_stfsu() {
void dppc_interpreter::ppc_stfsx() {
ppc_grab_regsfpsiab();
ppc_effective_address = (reg_a) ? val_reg_a + val_reg_b : val_reg_b;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(ppc_state.fpr[reg_s].int64_r));
float result = ppc_state.fpr[reg_s].dbl64_r;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(result));
}
void dppc_interpreter::ppc_stfsux() {
ppc_grab_regsfpsiab();
if (reg_a) {
ppc_effective_address = val_reg_a + val_reg_b;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(ppc_state.fpr[reg_s].int64_r));
float result = ppc_state.fpr[reg_s].dbl64_r;
mmu_write_vmem<uint32_t>(ppc_effective_address, uint32_t(result));
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);