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Fixes for condition reg move instructions

This commit is contained in:
dingusdev 2023-11-28 07:06:04 -07:00
parent 94872b3ebb
commit dd454689e0
2 changed files with 13 additions and 12 deletions
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23
cpu/ppc/ppcfpopcodes.cpp
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@ -915,18 +915,19 @@ void dppc_interpreter::ppc_mffs() {
}
void dppc_interpreter::ppc_mtfsf() {
uint32_t cr_mask = 0;
reg_b = (ppc_cur_instruction >> 11) & 31;
uint32_t fm_mask = (ppc_cur_instruction >> 17) & 255;
crm += ((fm_mask & 1) == 1) ? 0xF0000000 : 0x00000000;
crm += (((fm_mask >> 1) & 1) == 1) ? 0x0F000000 : 0x00000000;
crm += (((fm_mask >> 2) & 1) == 1) ? 0x00F00000 : 0x00000000;
crm += (((fm_mask >> 3) & 1) == 1) ? 0x000F0000 : 0x00000000;
crm += (((fm_mask >> 4) & 1) == 1) ? 0x0000F000 : 0x00000000;
crm += (((fm_mask >> 5) & 1) == 1) ? 0x00000F00 : 0x00000000;
crm += (((fm_mask >> 6) & 1) == 1) ? 0x000000F0 : 0x00000000;
crm += (((fm_mask >> 7) & 1) == 1) ? 0x0000000F : 0x00000000;
uint32_t quickfprval = (uint32_t)ppc_state.fpr[reg_b].int64_r;
ppc_state.fpscr = (quickfprval & crm) | (quickfprval & ~(crm));
crm = (ppc_cur_instruction >> 17) & 255;
cr_mask = ((crm & 1) == 1) ? 0xF0000000 : 0x00000000;
cr_mask += (((crm >> 1) & 1) == 1) ? 0x0F000000 : 0x00000000;
cr_mask += (((crm >> 2) & 1) == 1) ? 0x00F00000 : 0x00000000;
cr_mask += (((crm >> 3) & 1) == 1) ? 0x000F0000 : 0x00000000;
cr_mask += (((crm >> 4) & 1) == 1) ? 0x0000F000 : 0x00000000;
cr_mask += (((crm >> 5) & 1) == 1) ? 0x00000F00 : 0x00000000;
cr_mask += (((crm >> 6) & 1) == 1) ? 0x000000F0 : 0x00000000;
cr_mask += (((crm >> 7) & 1) == 1) ? 0x0000000F : 0x00000000;
uint32_t quickfprval = (uint32_t)(ppc_state.fpr[reg_b].int64_r & 0xFFFFFFFF);
ppc_state.fpscr = (ppc_state.fpscr & ~cr_mask) | (quickfprval & cr_mask);
if (rc_flag)
ppc_fp_changecrf1();

2
cpu/ppc/ppcopcodes.cpp
View File

@ -1044,7 +1044,7 @@ void dppc_interpreter::ppc_mtcrf() {
ppc_grab_regssa();
crm = ((ppc_cur_instruction >> 12) & 255);
// check this
cr_mask += (crm & 128) ? 0xF0000000 : 0x00000000;
cr_mask = (crm & 128) ? 0xF0000000 : 0x00000000;
cr_mask += (crm & 64) ? 0x0F000000 : 0x00000000;
cr_mask += (crm & 32) ? 0x00F00000 : 0x00000000;
cr_mask += (crm & 16) ? 0x000F0000 : 0x00000000;