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Implement LSL(2)

This commit is contained in:
Jeffrey Pfau 2013-04-20 18:03:48 -07:00
parent 0bfb77106b
commit 14100f19d1
1 changed files with 17 additions and 1 deletions
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18
src/arm/isa-thumb.c
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@ -196,7 +196,23 @@ DEFINE_DATA_FORM_3_INSTRUCTION_THUMB(SUB2, THUMB_SUBTRACTION(cpu->gprs[rd], cpu-
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(LSL2,
int rs = cpu->gprs[rn] & 0xFF;
if (rs) {
if (rs < 32) {
cpu->cpsr.c = cpu->gprs[rd] & (1 << (32 - rs));
cpu->gprs[rd] <<= rs;
} else {
if (rs > 32) {
cpu->cpsr.c = 0;
} else {
cpu->cpsr.c = cpu->gprs[rd] & 0x00000001;
}
cpu->gprs[rd] = 0;
}
}
THUMB_NEUTRAL_S( , , cpu->gprs[rd]))
DEFINE_DATA_FORM_5_INSTRUCTION_THUMB(LSR2,
int rs = cpu->gprs[rn] & 0xFF;
if (rs) {