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Further code cleanup

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This commit is contained in:
dingusdev 2024-02-14 22:19:08 -07:00
parent ec23a532f6
commit 38d94e509f
1 changed files with 19 additions and 23 deletions
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42
cpu/ppc/ppcopcodes.cpp
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@ -707,12 +707,12 @@ void dppc_interpreter::ppc_sraw() {
if (ppc_result_b & 0x20) {
// fill rA with the sign bit of rS
ppc_result_a = (int32_t)ppc_result_d >> 31;
ppc_result_a = int32_t(ppc_result_d) >> 31;
if (ppc_result_a) // if rA is negative
ppc_state.spr[SPR::XER] |= XER::CA;
} else {
uint32_t shift = ppc_result_b & 0x1F;
ppc_result_a = (int32_t)ppc_result_d >> shift;
ppc_result_a = int32_t(ppc_result_d) >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & ((1U << shift) - 1)))
ppc_state.spr[SPR::XER] |= XER::CA;
}
@ -725,14 +725,15 @@ void dppc_interpreter::ppc_sraw() {
void dppc_interpreter::ppc_srawi() {
ppc_grab_regssa();
unsigned shift = (ppc_cur_instruction >> 11) & 0x1F;
uint32_t mask = (1U << shift) - 1;
ppc_result_a = (int32_t)ppc_result_d >> shift;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & mask)) {
ppc_state.spr[SPR::XER] |= 0x20000000UL;
} else {
ppc_state.spr[SPR::XER] &= 0xDFFFFFFFUL;
}
uint32_t shift = (ppc_cur_instruction >> 11) & 0x1F;
// clear XER[CA] by default
ppc_state.spr[SPR::XER] &= ~XER::CA;
if ((ppc_result_d & 0x80000000UL) && (ppc_result_d & ((1U << shift) - 1)))
ppc_state.spr[SPR::XER] |= XER::CA;
ppc_result_a = int32_t(ppc_result_d) >> shift;
if (rc_flag)
ppc_changecrf0(ppc_result_a);
@ -1094,7 +1095,6 @@ void dppc_interpreter::ppc_mcrxr() {
void dppc_interpreter::ppc_extsb() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFF;
ppc_result_a = (int32_t(int8_t(ppc_result_d)));
if (rc_flag)
@ -1105,7 +1105,6 @@ void dppc_interpreter::ppc_extsb() {
void dppc_interpreter::ppc_extsh() {
ppc_grab_regssa();
ppc_result_d = ppc_result_d & 0xFFFF;
ppc_result_a = (int32_t(int16_t(ppc_result_d)));
if (rc_flag)
ppc_changecrf0(ppc_result_a);
@ -1303,9 +1302,8 @@ void dppc_interpreter::ppc_cmp() {
int crf_d = (ppc_cur_instruction >> 21) & 0x1C;
ppc_grab_regssab();
uint32_t xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
uint32_t cmp_c = (((int32_t)ppc_result_a) == ((int32_t)ppc_result_b))
? 0x20000000UL
: (((int32_t)ppc_result_a) > ((int32_t)ppc_result_b)) ? 0x40000000UL : 0x80000000UL;
uint32_t cmp_c = (int32_t(ppc_result_a) == int32_t(ppc_result_b)) ? 0x20000000UL : \
(int32_t(ppc_result_a) > int32_t(ppc_result_b)) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
@ -1320,9 +1318,8 @@ void dppc_interpreter::ppc_cmpi() {
int crf_d = (ppc_cur_instruction >> 21) & 0x1C;
ppc_grab_regsasimm();
uint32_t xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
uint32_t cmp_c = (((int32_t)ppc_result_a) == simm)
? 0x20000000UL
: (((int32_t)ppc_result_a) > simm) ? 0x40000000UL : 0x80000000UL;
uint32_t cmp_c = (int32_t(ppc_result_a) == simm) ? 0x20000000UL : \
(int32_t(ppc_result_a) > simm) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
@ -1337,9 +1334,8 @@ void dppc_interpreter::ppc_cmpl() {
int crf_d = (ppc_cur_instruction >> 21) & 0x1C;
ppc_grab_regssab();
uint32_t xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
uint32_t cmp_c = (ppc_result_a == ppc_result_b)
? 0x20000000UL
: (ppc_result_a > ppc_result_b) ? 0x40000000UL : 0x80000000UL;
uint32_t cmp_c = (ppc_result_a == ppc_result_b) ? 0x20000000UL : \
(ppc_result_a > ppc_result_b) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}
@ -1354,8 +1350,8 @@ void dppc_interpreter::ppc_cmpli() {
int crf_d = (ppc_cur_instruction >> 21) & 0x1C;
ppc_grab_regssauimm();
uint32_t xercon = (ppc_state.spr[SPR::XER] & 0x80000000UL) >> 3;
uint32_t cmp_c = (ppc_result_a == uimm) ? 0x20000000UL
: (ppc_result_a > uimm) ? 0x40000000UL : 0x80000000UL;
uint32_t cmp_c = (ppc_result_a == uimm) ? 0x20000000UL : \
(ppc_result_a > uimm) ? 0x40000000UL : 0x80000000UL;
ppc_state.cr = ((ppc_state.cr & ~(0xf0000000UL >> crf_d)) | ((cmp_c + xercon) >> crf_d));
}