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[Qemu-devel] Bug in ppc/BookE wait instruction
From: |
Jakub Horak |
Subject: |
[Qemu-devel] Bug in ppc/BookE wait instruction |
Date: |
Fri, 3 Jun 2016 17:45:49 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hello,
I think there's a bug in "wait" instruction code generator for PowerPC
architecture. It doesn't make sense to store a non-initialized register.
Best regards,
Jakub Horak
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index f5ceae5..6af567b 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -3439,7 +3439,7 @@ static void gen_sync(DisasContext *ctx)
/* wait */
static void gen_wait(DisasContext *ctx)
{
- TCGv_i32 t0 = tcg_temp_new_i32();
+ TCGv_i32 t0 = tcg_const_i32(1);
tcg_gen_st_i32(t0, cpu_env,
-offsetof(PowerPCCPU, env) + offsetof(CPUState, halted));
tcg_temp_free_i32(t0);
- [Qemu-devel] Bug in ppc/BookE wait instruction,
Jakub Horak <=