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Fixing sub carry flag.

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This commit is contained in:
Ben Vanik
2015-05-13 18:04:33 -07:00
parent b819c992ed
commit 00b79d66ff
103 changed files with 2491 additions and 754 deletions
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14
src/xenia/cpu/hir/value.cc
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@@ -244,24 +244,28 @@ bool Value::Add(Value* other) {
}
bool Value::Sub(Value* other) {
#define SUB_DID_CARRY(a, b) (b > a)
#define SUB_DID_CARRY(a, b) (b == 0 || a > (~(0-b)))
assert_true(type == other->type);
bool did_carry = false;
switch (type) {
case INT8_TYPE:
did_carry = SUB_DID_CARRY(constant.i8, other->constant.i8);
did_carry =
SUB_DID_CARRY(uint16_t(constant.i8), uint16_t(other->constant.i8));
constant.i8 -= other->constant.i8;
break;
case INT16_TYPE:
did_carry = SUB_DID_CARRY(constant.i16, other->constant.i16);
did_carry =
SUB_DID_CARRY(uint16_t(constant.i16), uint16_t(other->constant.i16));
constant.i16 -= other->constant.i16;
break;
case INT32_TYPE:
did_carry = SUB_DID_CARRY(constant.i32, other->constant.i32);
did_carry =
SUB_DID_CARRY(uint32_t(constant.i32), uint32_t(other->constant.i32));
constant.i32 -= other->constant.i32;
break;
case INT64_TYPE:
did_carry = SUB_DID_CARRY(constant.i64, other->constant.i64);
did_carry =
SUB_DID_CARRY(uint64_t(constant.i64), uint64_t(other->constant.i64));
constant.i64 -= other->constant.i64;
break;
case FLOAT32_TYPE: