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| author | Artyom Tarasenko <atar4qemu@gmail.com> | 2016-06-24 14:34:30 +0200 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2016-06-24 18:18:32 +0100 |
| commit | b64d2e57e704edbb56ae969de864292dd38379bf (patch) | |
| tree | 37f99876f82ece03f0ca67f57b17fb1097f45b56 | |
| parent | a01aef5d2f96c334d048f43f0d3573a1152b37ca (diff) | |
| download | focaccia-qemu-b64d2e57e704edbb56ae969de864292dd38379bf.tar.gz focaccia-qemu-b64d2e57e704edbb56ae969de864292dd38379bf.zip | |
target-sparc: fix register corruption in ldstub if there is no write permission
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
| -rw-r--r-- | target-sparc/translate.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target-sparc/translate.c b/target-sparc/translate.c index afd46b878f..0f4faf7062 100644 --- a/target-sparc/translate.c +++ b/target-sparc/translate.c @@ -4679,12 +4679,15 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) case 0xd: /* ldstub -- XXX: should be atomically */ { TCGv r_const; + TCGv tmp = tcg_temp_new(); gen_address_mask(dc, cpu_addr); - tcg_gen_qemu_ld8u(cpu_val, cpu_addr, dc->mem_idx); + tcg_gen_qemu_ld8u(tmp, cpu_addr, dc->mem_idx); r_const = tcg_const_tl(0xff); tcg_gen_qemu_st8(r_const, cpu_addr, dc->mem_idx); + tcg_gen_mov_tl(cpu_val, tmp); tcg_temp_free(r_const); + tcg_temp_free(tmp); } break; case 0x0f: |