all repos — mgba @ ee5375a8ffb8f91185fe12f0b635b38a23064d55

mGBA Game Boy Advance Emulator

Implement CMP(2)
Jeffrey Pfau jeffrey@endrift.com
Sun, 14 Apr 2013 03:08:07 -0700
commit

ee5375a8ffb8f91185fe12f0b635b38a23064d55

parent

b541b99d0c88379c6a40a15b79ec4752a22f9be8

1 files changed, 1 insertions(+), 1 deletions(-)

jump to
M src/isa-thumb.c → src/isa-thumb.c 
@@ -224,7 +224,7 @@ DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(SBC, ARM_STUB)
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(ROR, ARM_STUB)
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(TST, ARM_STUB)
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(NEG, THUMB_SUBTRACTION(cpu->gprs[rd], 0, cpu->gprs[rn]))
-DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(CMP2, ARM_STUB)
+DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(CMP2, int32_t aluOut = cpu->gprs[rd] - cpu->gprs[rn]; THUMB_SUBTRACTION_S(cpu->gprs[rd], cpu->gprs[rn], aluOut))
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(CMN, ARM_STUB)
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(ORR, cpu->gprs[rd] = cpu->gprs[rd] | cpu->gprs[rn]; THUMB_NEUTRAL_S( , , cpu->gprs[rd]))
 DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(MUL, ARM_STUB)