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Fixing CR update for divwu/divdu/mulhwu.

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This commit is contained in:
Ben Vanik
2015-12-30 10:04:57 -08:00
parent 69c7bac8db
commit cbc74c92f4
6 changed files with 88 additions and 5 deletions
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27
src/xenia/cpu/ppc/ppc_context.cc
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@@ -19,6 +19,23 @@ namespace xe {
namespace cpu {
namespace ppc {
uint64_t PPCContext::cr() const {
uint64_t final_bits = 0;
for (int i = 0; i < 8; ++i) {
uint32_t crf = *(&cr0.value + i);
uint64_t bits = (crf & 0x1) << (4 * (7 - i) + 3) |
((crf >> 8) & 0x1) << (4 * (7 - i) + 2) |
((crf >> 16) & 0x1) << (4 * (7 - i) + 1) |
((crf >> 24) & 0x1) << (4 * (7 - i) + 0);
final_bits |= bits << (i * 4);
}
return final_bits;
}
void PPCContext::set_cr(uint64_t value) {
assert_always("not yet implemented");
}
std::string PPCContext::GetRegisterName(PPCRegister reg) {
switch (reg) {
case PPCRegister::kLR:
@@ -111,6 +128,8 @@ void PPCContext::SetRegFromString(const char* name, const char* value) {
this->f[n] = string_util::from_string<double>(value);
} else if (sscanf(name, "v%d", &n) == 1) {
this->v[n] = string_util::from_string<vec128_t>(value);
} else if (std::strcmp(name, "cr") == 0) {
this->set_cr(string_util::from_string<uint64_t>(value));
} else {
printf("Unrecognized register name: %s\n", name);
}
@@ -144,6 +163,14 @@ bool PPCContext::CompareRegWithString(const char* name, const char* value,
return false;
}
return true;
} else if (std::strcmp(name, "cr") == 0) {
uint64_t actual = this->cr();
uint64_t expected = string_util::from_string<uint64_t>(value);
if (actual != expected) {
std::snprintf(out_value, out_value_size, "%016" PRIX64, actual);
return false;
}
return true;
} else {
assert_always("Unrecognized register name: %s\n", name);
return false;