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Implement LSR(2)

This commit is contained in:
Jeffrey Pfau 2013-04-14 02:49:07 -07:00
parent 76a85c763c
commit 97ce972b2a
1 changed files with 17 additions and 1 deletions
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18
src/isa-thumb.c
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@ -181,7 +181,23 @@ DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(SUB2, ARM_STUB)
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(AND, cpu->gprs[rd] = cpu->gprs[rd] & cpu->gprs[rn]; THUMB_NEUTRAL_S( , , cpu->gprs[rd]))
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(EOR, cpu->gprs[rd] = cpu->gprs[rd] ^ cpu->gprs[rn]; THUMB_NEUTRAL_S( , , cpu->gprs[rd]))
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(LSL2, ARM_STUB)
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(LSR2, ARM_STUB)
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(LSR2, \
int rs = cpu->gprs[rn] & 0xFF; \
if (rs) { \
if (rs < 32) { \
cpu->cpsr.c = cpu->gprs[rd] & (1 << (rs - 1)); \
cpu->gprs[rd] = (uint32_t) cpu->gprs[rd] >> rs; \
} else { \
if (rs > 32) { \
cpu->cpsr.c = 0; \
} else { \
cpu->cpsr.c = ARM_SIGN(cpu->gprs[rd]); \
} \
cpu->gprs[rd] = 0; \
} \
} \
THUMB_NEUTRAL_S( , , cpu->gprs[rd]))
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(ASR2, \
int rs = cpu->gprs[rn] & 0xFF; \
if (rs) { \