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

fix cpu_cc_src and cpu_cc_src2 corruption in udivx and sdivx 

udivx and sdvix don't modify condition flags, so they shall not
overwrite cpu_cc_*

Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Artyom Tarasenko 2011-07-01 21:28:42 +02:00 committed by Blue Swirl
parent 3b88670664
commit 8e91ed3080
1 changed files with 22 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
target-sparc/translate.c
View File

@ -727,19 +727,24 @@ static inline void gen_trap_ifdivzero_tl(TCGv divisor)
static inline void gen_op_sdivx(TCGv dst, TCGv src1, TCGv src2)
{
int l1, l2;
TCGv r_temp1, r_temp2;
l1 = gen_new_label();
l2 = gen_new_label();
tcg_gen_mov_tl(cpu_cc_src, src1);
tcg_gen_mov_tl(cpu_cc_src2, src2);
gen_trap_ifdivzero_tl(cpu_cc_src2);
tcg_gen_brcondi_tl(TCG_COND_NE, cpu_cc_src, INT64_MIN, l1);
tcg_gen_brcondi_tl(TCG_COND_NE, cpu_cc_src2, -1, l1);
r_temp1 = tcg_temp_local_new();
r_temp2 = tcg_temp_local_new();
tcg_gen_mov_tl(r_temp1, src1);
tcg_gen_mov_tl(r_temp2, src2);
gen_trap_ifdivzero_tl(r_temp2);
tcg_gen_brcondi_tl(TCG_COND_NE, r_temp1, INT64_MIN, l1);
tcg_gen_brcondi_tl(TCG_COND_NE, r_temp2, -1, l1);
tcg_gen_movi_i64(dst, INT64_MIN);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_div_i64(dst, cpu_cc_src, cpu_cc_src2);
tcg_gen_div_i64(dst, r_temp1, r_temp2);
gen_set_label(l2);
tcg_temp_free(r_temp1);
tcg_temp_free(r_temp2);
}
#endif
@ -3173,10 +3178,17 @@ static void disas_sparc_insn(DisasContext * dc)
break;
#ifdef TARGET_SPARC64
case 0xd: /* V9 udivx */
tcg_gen_mov_tl(cpu_cc_src, cpu_src1);
tcg_gen_mov_tl(cpu_cc_src2, cpu_src2);
gen_trap_ifdivzero_tl(cpu_cc_src2);
tcg_gen_divu_i64(cpu_dst, cpu_cc_src, cpu_cc_src2);
{
TCGv r_temp1, r_temp2;
r_temp1 = tcg_temp_local_new();
r_temp2 = tcg_temp_local_new();
tcg_gen_mov_tl(r_temp1, cpu_src1);
tcg_gen_mov_tl(r_temp2, cpu_src2);
gen_trap_ifdivzero_tl(r_temp2);
tcg_gen_divu_i64(cpu_dst, r_temp1, r_temp2);
tcg_temp_free(r_temp1);
tcg_temp_free(r_temp2);
}
break;
#endif
case 0xe: /* udiv */