diff options
| author | Michal Simek <monstr@monstr.eu> | 2010-08-06 04:42:30 -0400 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2010-10-21 01:51:29 -0400 |
| commit | 7d4320956f0f8aa2c36c23f209acc3e4c3ae52d6 (patch) | |
| tree | 2a61281485ca14ede2e64665d06875b56bcb4a8a | |
| parent | 791d0a169b912220d58e0ce4564d7bf1e68146a8 (diff) | |
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>
| -rw-r--r-- | arch/microblaze/kernel/entry.S | 2 |
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): | |||
| 295 | /* addik r1, r1, -STATE_SAVE_SIZE; */ | 295 | /* addik r1, r1, -STATE_SAVE_SIZE; */ |
| 296 | addik r1, r1, THREAD_SIZE + CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START - STATE_SAVE_SIZE; | 296 | addik r1, r1, THREAD_SIZE + CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START - STATE_SAVE_SIZE; |
| 297 | SAVE_REGS | 297 | SAVE_REGS |
| 298 | swi r0, r1, PTO + PT_R3 | ||
| 299 | swi r0, r1, PTO + PT_R4 | ||
| 298 | 300 | ||
| 299 | lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP)); | 301 | lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP)); |
| 300 | swi r11, r1, PTO+PT_R1; /* Store user SP. */ | 302 | swi r11, r1, PTO+PT_R1; /* Store user SP. */ |