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addic + subfex.

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This commit is contained in:
Ben Vanik
2013-05-24 19:10:54 -07:00
parent dc40f28795
commit 69ebedb43f
2 changed files with 36 additions and 33 deletions
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19
src/xenia/cpu/x64/x64_emitter.cc
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@@ -1186,21 +1186,16 @@ void X64Emitter::update_xer_with_overflow(GpVar& value) {
}
#endif
#if 0
// Set with a byte value indicating carry.
void X64Emitter::update_xer_with_carry(GpVar& value) {
X86Compiler& c = compiler_;
XEASSERT(locals_.xer.getId() != kInvalidValue);
// Expects a i1 indicating carry.
// Trust the caller that if it's larger than that it's already truncated.
value = zero_extend(value, jit_type_nuint);
GpVar& xer = xer_value();
xer = jit_insn_and(fn_, xer, get_uint64(0xFFFFFFFFDFFFFFFF)); // clear bit 29
xer = jit_insn_or(fn_, xer, jit_insn_shl(fn_, value, get_uint32(29)));
jit_insn_store(fn_, locals_.xer, value);
GpVar xer(c.newGpVar());
c.mov(xer, xer_value());
c.and_(xer, imm(0xDFFFFFFF)); // clear bit 29
c.shl(value, imm(29));
c.or_(xer, value);
update_xer_value(xer);
}
#endif
#if 0
void X64Emitter::update_xer_with_overflow_and_carry(GpVar& value) {