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| author | Michael Walle <michael@walle.cc> | 2012-12-14 18:14:04 +0100 |
|---|---|---|
| committer | Michael Walle <michael@walle.cc> | 2013-03-18 19:40:34 +0100 |
| commit | df5eb7d2c871ccd708e0f45cdc5d79b73550731b (patch) | |
| tree | 538e9749a71d25876350c72f2146a8bc4b1c5778 | |
| parent | 6036e9d87e73c511fef48a3c06267f92e613fca9 (diff) | |
| download | qemu-df5eb7d2c871ccd708e0f45cdc5d79b73550731b.zip qemu-df5eb7d2c871ccd708e0f45cdc5d79b73550731b.tar.gz qemu-df5eb7d2c871ccd708e0f45cdc5d79b73550731b.tar.bz2 | |
target-lm32: fix cmpgui and cmpgeui opcodes
For unsigned compares the immediate has to be zero extended.
Signed-off-by: Michael Walle <michael@walle.cc>
| -rw-r--r-- | target-lm32/translate.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/target-lm32/translate.c b/target-lm32/translate.c index f51ffc5..e885bb3 100644 --- a/target-lm32/translate.c +++ b/target-lm32/translate.c @@ -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); } |