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target-lm32: fix cmpgui and cmpgeui opcodes

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For unsigned compares the immediate has to be zero extended.

Signed-off-by: Michael Walle <michael@walle.cc>
This commit is contained in:
Michael Walle 2012-12-14 18:14:04 +01:00
parent 6036e9d87e
commit df5eb7d2c8
1 changed files with 14 additions and 4 deletions
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18
target-lm32/translate.c
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@ -324,10 +324,20 @@ static inline void gen_compare(DisasContext *dc, int cond)
int rX = (dc->format == OP_FMT_RR) ? dc->r2 : dc->r1;
int rY = (dc->format == OP_FMT_RR) ? dc->r0 : dc->r0;
int rZ = (dc->format == OP_FMT_RR) ? dc->r1 : -1;
int i;
if (dc->format == OP_FMT_RI) {
tcg_gen_setcondi_tl(cond, cpu_R[rX], cpu_R[rY],
sign_extend(dc->imm16, 16));
switch (cond) {
case TCG_COND_GEU:
case TCG_COND_GTU:
i = zero_extend(dc->imm16, 16);
break;
default:
i = sign_extend(dc->imm16, 16);
break;
}
tcg_gen_setcondi_tl(cond, cpu_R[rX], cpu_R[rY], i);
} else {
tcg_gen_setcond_tl(cond, cpu_R[rX], cpu_R[rY], cpu_R[rZ]);
}
@ -373,7 +383,7 @@ static void dec_cmpgeu(DisasContext *dc)
{
if (dc->format == OP_FMT_RI) {
LOG_DIS("cmpgeui r%d, r%d, %d\n", dc->r0, dc->r1,
sign_extend(dc->imm16, 16));
zero_extend(dc->imm16, 16));
} else {
LOG_DIS("cmpgeu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
}
@ -385,7 +395,7 @@ static void dec_cmpgu(DisasContext *dc)
{
if (dc->format == OP_FMT_RI) {
LOG_DIS("cmpgui r%d, r%d, %d\n", dc->r0, dc->r1,
sign_extend(dc->imm16, 16));
zero_extend(dc->imm16, 16));
} else {
LOG_DIS("cmpgu r%d, r%d, r%d\n", dc->r2, dc->r0, dc->r1);
}