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[Qemu-devel] [PATCH] target-sparc: fix register corruption in ldstub if
From: |
Artyom Tarasenko |
Subject: |
[Qemu-devel] [PATCH] target-sparc: fix register corruption in ldstub if there is no write permission |
Date: |
Fri, 24 Jun 2016 14:34:30 +0200 |
Signed-off-by: Artyom Tarasenko <address@hidden>
---
target-sparc/translate.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/target-sparc/translate.c b/target-sparc/translate.c
index 5111cf0..065326c 100644
--- a/target-sparc/translate.c
+++ b/target-sparc/translate.c
@@ -5187,12 +5187,15 @@ printf("ops, illegal rdhpr\n");
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:
--
1.8.3.1
- [Qemu-devel] [PATCH] target-sparc: fix register corruption in ldstub if there is no write permission,
Artyom Tarasenko <=