ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

target/i386: fix incorrect EIP in PC-relative translation blocks 

The PCREL patches introduced a bug when updating EIP in the !CF_PCREL case.
Using s->pc in func gen_update_eip_next() solves the problem.

Cc: qemu-stable@nongnu.org
Fixes: b5e0d5d22f ("target/i386: Fix 32-bit wrapping of pc/eip computation")
Signed-off-by: guoguangyao <guoguangyao18@mails.ucas.ac.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240115020804.30272-1-guoguangyao18@mails.ucas.ac.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
guoguangyao 2024-01-15 10:08:04 +08:00 committed by Paolo Bonzini
parent a58506b748
commit 2926eab896
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
target/i386/tcg/translate.c
View File

@ -567,9 +567,9 @@ static void gen_update_eip_next(DisasContext *s)
if (tb_cflags(s->base.tb) & CF_PCREL) {
tcg_gen_addi_tl(cpu_eip, cpu_eip, s->pc - s->pc_save);
} else if (CODE64(s)) {
tcg_gen_movi_tl(cpu_eip, s->base.pc_next);
tcg_gen_movi_tl(cpu_eip, s->pc);
} else {
tcg_gen_movi_tl(cpu_eip, (uint32_t)(s->base.pc_next - s->cs_base));
tcg_gen_movi_tl(cpu_eip, (uint32_t)(s->pc - s->cs_base));
}
s->pc_save = s->pc;
}