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ppcfpopcodes: improve mffs, mtfsb0 and mtfsb1.

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This commit is contained in:
Maxim Poliakovski 2023-11-29 18:55:15 +01:00
parent 487c6c2c7c
commit b51670cb25
1 changed files with 6 additions and 7 deletions
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13
cpu/ppc/ppcfpopcodes.cpp
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@ -845,9 +845,8 @@ void dppc_interpreter::ppc_fmr() {
void dppc_interpreter::ppc_mffs() {
ppc_grab_regsda();
uint64_t fpstore1 = ppc_state.fpr[reg_d].int64_r & ((uint64_t)0xFFF80000 << 32);
fpstore1 |= (uint64_t)ppc_state.fpscr;
fp_save_uint64(fpstore1);
ppc_state.fpr[reg_d].int64_r = (uint64_t)ppc_state.fpscr;
if (rc_flag)
ppc_update_cr1();
@ -884,8 +883,8 @@ void dppc_interpreter::ppc_mtfsfi() {
}
void dppc_interpreter::ppc_mtfsb0() {
crf_d = (ppc_cur_instruction >> 21) & 0x1F;
if ((crf_d == 0) || (crf_d > 2)) {
int crf_d = (ppc_cur_instruction >> 21) & 0x1F;
if (!crf_d || (crf_d > 2)) { // FEX and VX can't be explicitely cleared
ppc_state.fpscr &= ~(0x80000000UL >> crf_d);
}
@ -894,8 +893,8 @@ void dppc_interpreter::ppc_mtfsb0() {
}
void dppc_interpreter::ppc_mtfsb1() {
crf_d = (ppc_cur_instruction >> 21) & 0x1F;
if ((crf_d == 0) || (crf_d > 2)) {
int crf_d = (ppc_cur_instruction >> 21) & 0x1F;
if (!crf_d || (crf_d > 2)) { // FEX and VX can't be explicitely set
ppc_state.fpscr |= (0x80000000UL >> crf_d);
}