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ppcfpopcodes: Fix load float. 

Type casting an int to a float assigns the value of the int to the float which is not what is needed here.
This commit is contained in:
joevt 2024-02-04 03:23:24 -08:00 committed by dingusdev
parent 267a9448ea
commit fd81d7b040
1 changed files with 8 additions and 9 deletions
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17
cpu/ppc/ppcfpopcodes.cpp
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@ -681,18 +681,17 @@ void dppc_interpreter::ppc_lfs() {
ppc_grab_regsfpdia();
ppc_effective_address = int32_t(int16_t(ppc_cur_instruction));
ppc_effective_address += (reg_a) ? val_reg_a : 0;
float result = (float)mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = (double)result;
uint32_t result = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = *(float*)(&result);
}
void dppc_interpreter::ppc_lfsu() {
ppc_grab_regsfpdia();
if (reg_a) {
ppc_effective_address = int32_t(int16_t(ppc_cur_instruction));
ppc_effective_address += (reg_a) ? val_reg_a : 0;
float result = (float)mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = (double)result;
uint32_t result = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = *(float*)(&result);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);
@ -702,16 +701,16 @@ void dppc_interpreter::ppc_lfsu() {
void dppc_interpreter::ppc_lfsx() {
ppc_grab_regsfpdiab();
ppc_effective_address = (reg_a) ? val_reg_a + val_reg_b : val_reg_b;
float result = (float)mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = (double)result;
uint32_t result = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = *(float*)(&result);
}
void dppc_interpreter::ppc_lfsux() {
ppc_grab_regsfpdiab();
if (reg_a) {
ppc_effective_address = val_reg_a + val_reg_b;
float result = (float)mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = (double)result;
uint32_t result = mmu_read_vmem<uint32_t>(ppc_effective_address);
ppc_state.fpr[reg_d].dbl64_r = *(float*)(&result);
ppc_state.gpr[reg_a] = ppc_effective_address;
} else {
ppc_exception_handler(Except_Type::EXC_PROGRAM, Exc_Cause::ILLEGAL_OP);