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[Qemu-devel] [PATCH 1/7] linux-user: Fix Stack Pointer Bug in PPC setup_
From: |
Tom Musta |
Subject: |
[Qemu-devel] [PATCH 1/7] linux-user: Fix Stack Pointer Bug in PPC setup_rt_frame |
Date: |
Mon, 30 Jun 2014 08:13:36 -0500 |
The code that sets the stack frame back pointer is incorrect for
the setup_rt_frame() code; qemu will abort (SIGSEGV) in some
environments. The setup_frame code was fixed in commit
beb526b12134a6b6744125deec5a7fe24a8f92e3 but the setup_rt_frame
code was not.
Make the setup_rt_frame code consistent with the setup_frame
code.
Signed-off-by: Tom Musta <address@hidden>
---
linux-user/signal.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index f3b4378..256f9b9 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -4740,7 +4740,7 @@ static void setup_rt_frame(int sig, struct
target_sigaction *ka,
/* Create a stack frame for the caller of the handler. */
newsp = rt_sf_addr - (SIGNAL_FRAMESIZE + 16);
- __put_user(env->gpr[1], (target_ulong *)(uintptr_t) newsp);
+ err |= put_user(env->gpr[1], newsp, target_ulong);
if (err)
goto sigsegv;
--
1.7.1
- [Qemu-devel] [PATCH 0/7] linux-user: Support for Signal Handlers on PPC64, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 1/7] linux-user: Fix Stack Pointer Bug in PPC setup_rt_frame,
Tom Musta <=
- [Qemu-devel] [PATCH 3/7] linux-user: Enable Signal Handlers on PPC64, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 2/7] linux-user: Split PPC Trampoline Encoding from Register Save, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 4/7] linux-user: Properly Dereference PPC64 ELFv1 Signal Handler Pointer, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 6/7] linux-user: Move get_ppc64_abi, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 5/7] linux-user: Implement do_setcontext for PPC64, Tom Musta, 2014/06/30
- [Qemu-devel] [PATCH 7/7] linux-user: Handle PPC64 ELFv2 Function Pointers, Tom Musta, 2014/06/30