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[Qemu-devel] [PATCH] m68: fix exception stack frame for 68000
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [PATCH] m68: fix exception stack frame for 68000 |
Date: |
Fri, 13 Apr 2018 14:12:45 +0300 |
User-agent: |
StGit/0.17.1-dirty |
68000 CPUs do not save format in the exception stack frame.
This patch adds feature checking to prevent format saving for 68000.
m68k_ret() already includes this modification, this patch fixes
the exception processing function too.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
target/m68k/op_helper.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/target/m68k/op_helper.c b/target/m68k/op_helper.c
index 3a7f7f2..e367133 100644
--- a/target/m68k/op_helper.c
+++ b/target/m68k/op_helper.c
@@ -301,8 +301,11 @@ static inline void do_stack_frame(CPUM68KState *env,
uint32_t *sp,
cpu_stl_kernel(env, *sp, addr);
break;
}
- *sp -= 2;
- cpu_stw_kernel(env, *sp, (format << 12) + (cs->exception_index << 2));
+ if (m68k_feature(env, M68K_FEATURE_QUAD_MULDIV)) {
+ /* all except 68000 */
+ *sp -= 2;
+ cpu_stw_kernel(env, *sp, (format << 12) + (cs->exception_index << 2));
+ }
*sp -= 4;
cpu_stl_kernel(env, *sp, retaddr);
*sp -= 2;
- [Qemu-devel] [PATCH] m68: fix exception stack frame for 68000,
Pavel Dovgalyuk <=