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authorMichal Simek <monstr@monstr.eu>2010-08-06 10:42:30 +0200
committerMichal Simek <monstr@monstr.eu>2010-10-21 07:51:29 +0200
commit7d4320956f0f8aa2c36c23f209acc3e4c3ae52d6 (patch)
tree2a61281485ca14ede2e64665d06875b56bcb4a8a /arch/microblaze
parentmicroblaze: Fix sys_rt_sigreturn_wrapper (diff)
downloadlinux-7d4320956f0f8aa2c36c23f209acc3e4c3ae52d6.tar.xz
linux-7d4320956f0f8aa2c36c23f209acc3e4c3ae52d6.zip
microblaze: Clear return value in pt_regs
Signal code uses r3 value which saved in restore_sigcontext to rt_sigframe but it require to be zeroed. If is not zero rt_sigframe contains wrong values. Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/kernel/entry.S2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index ab4f1e159308..8539c6c0e741 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -295,6 +295,8 @@ C_ENTRY(_user_exception):
/* addik r1, r1, -STATE_SAVE_SIZE; */
addik r1, r1, THREAD_SIZE + CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START - STATE_SAVE_SIZE;
SAVE_REGS
+ swi r0, r1, PTO + PT_R3
+ swi r0, r1, PTO + PT_R4
lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP));
swi r11, r1, PTO+PT_R1; /* Store user SP. */