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Fixing subfme.

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This commit is contained in:
Ben Vanik
2015-05-13 00:15:35 -07:00
parent 3ba6598caf
commit 6fd7e35deb
3 changed files with 24 additions and 11 deletions
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5
src/xenia/cpu/frontend/ppc_emit_alu.cc
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@@ -466,8 +466,9 @@ XEEMITTER(subfex, 0x7C000110, XO)(PPCHIRBuilder& f, InstrData& i) {
XEEMITTER(subfmex, 0x7C0001D0, XO)(PPCHIRBuilder& f, InstrData& i) {
// RT <- ¬(RA) + CA - 1
Value* v = f.AddWithCarry(f.Not(f.LoadGPR(i.XO.RA)),
f.LoadConstant((int64_t)-1), f.LoadCA());
Value* v =
f.AddWithCarry(f.Not(f.LoadGPR(i.XO.RA)), f.LoadConstant((int64_t)-1),
f.LoadCA(), ARITHMETIC_SET_CARRY);
if (i.XO.OE) {
assert_always();
// e.update_xer_with_overflow_and_carry(b.CreateExtractValue(v, 1));

6
src/xenia/cpu/frontend/test/instr_subfme.s
View File

@@ -55,7 +55,7 @@ test_subfme_zero_ca_1:
blr
#_ REGISTER_OUT r10 0x00000000000103BF
#_ REGISTER_OUT r3 0xfffffffffffefc3f
#_ REGISTER_OUT r4 0
#_ REGISTER_OUT r4 1
test_subfme_zero_ca_2:
#_ REGISTER_IN r10 0
@@ -66,7 +66,7 @@ test_subfme_zero_ca_2:
blr
#_ REGISTER_OUT r10 0
#_ REGISTER_OUT r3 0xfffffffffffffffe
#_ REGISTER_OUT r4 0
#_ REGISTER_OUT r4 1
test_subfme_zero_ca_3:
#_ REGISTER_IN r10 1
@@ -77,7 +77,7 @@ test_subfme_zero_ca_3:
blr
#_ REGISTER_OUT r10 1
#_ REGISTER_OUT r3 0xfffffffffffffffd
#_ REGISTER_OUT r4 0
#_ REGISTER_OUT r4 1
test_subfme_zero_ca_4:
#_ REGISTER_IN r10 0xFFFFFFFFFFFFFFFF