Implement UMULL
Jeffrey Pfau jeffrey@endrift.com
Sat, 20 Apr 2013 13:22:10 -0700
1 files changed,
9 insertions(+),
2 deletions(-)
jump to
M
src/arm/isa-arm.c
→
src/arm/isa-arm.c
@@ -230,6 +230,10 @@ cpu->cpsr.z = !(D); \
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