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Implement UMULL

This commit is contained in:
Jeffrey Pfau 2013-04-20 13:22:10 -07:00
parent 63e809550d
commit bf54a68b0e
1 changed files with 9 additions and 2 deletions
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11
src/arm/isa-arm.c
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@ -230,6 +230,10 @@ void ARMStep(struct ARMCore* cpu) {
cpu->cpsr.c = cpu->shifterCarryOut; \
}
#define ARM_NEUTRAL_HI_S(DLO, DHI) \
cpu->cpsr.n = ARM_SIGN(DHI); \
cpu->cpsr.z = !((DHI) | (DLO));
#define ADDR_MODE_2_ADDRESS (address)
#define ADDR_MODE_2_RN (cpu->gprs[rn])
#define ADDR_MODE_2_RM (cpu->gprs[rm])
@ -510,8 +514,11 @@ DEFINE_INSTRUCTION_ARM(SMULL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(SMULLS, ARM_STUB)
DEFINE_INSTRUCTION_ARM(UMLAL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(UMLALS, ARM_STUB)
DEFINE_INSTRUCTION_ARM(UMULL, ARM_STUB)
DEFINE_INSTRUCTION_ARM(UMULLS, ARM_STUB)
DEFINE_MULTIPLY_INSTRUCTION_ARM(UMULL,
uint64_t d = ((uint64_t) cpu->gprs[rm]) * ((uint64_t) cpu->gprs[rs]);
cpu->gprs[rd] = d;
cpu->gprs[rdHi] = d >> 32;,
ARM_NEUTRAL_HI_S(cpu->gprs[rd], cpu->gprs[rdHi]))
// End multiply definitions