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| author | Guo Ren | 2018-12-09 07:18:05 +0100 |
|---|---|---|
| committer | Guo Ren | 2018-12-31 16:12:22 +0100 |
| commit | 0ea2dc7cd668be5475babecaf6fdeaa464e2847b (patch) | |
| tree | 733fef9d2126b7323d4ec80e62e0c3ea583e01f7 /arch/csky/include | |
| parent | csky: CPU-hotplug supported for SMP (diff) | |
| download | kernel-qcow2-linux-0ea2dc7cd668be5475babecaf6fdeaa464e2847b.tar.gz kernel-qcow2-linux-0ea2dc7cd668be5475babecaf6fdeaa464e2847b.tar.xz kernel-qcow2-linux-0ea2dc7cd668be5475babecaf6fdeaa464e2847b.zip | |
csky: stacktrace supported.
The gcc option "-mbacktrace" will push fp(r8),lr into stack and we could
unwind the stack with:
fp = *fp
lr = (unsigned int *)fp[1]
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Diffstat (limited to 'arch/csky/include')
| -rw-r--r-- | arch/csky/include/asm/thread_info.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/csky/include/asm/thread_info.h b/arch/csky/include/asm/thread_info.h index a2c69a7836f7..0e9d035d712b 100644 --- a/arch/csky/include/asm/thread_info.h +++ b/arch/csky/include/asm/thread_info.h @@ -10,6 +10,7 @@ #include <asm/types.h> #include <asm/page.h> #include <asm/processor.h> +#include <abi/switch_context.h> struct thread_info { struct task_struct *task; @@ -36,6 +37,9 @@ struct thread_info { #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) +#define thread_saved_fp(tsk) \ + ((unsigned long)(((struct switch_stack *)(tsk->thread.ksp))->r8)) + static inline struct thread_info *current_thread_info(void) { unsigned long sp; |