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author | 2014-08-20 10:56:00 +0100 | |
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committer | 2014-10-13 21:46:25 +0200 | |
commit | 970e51feaddbc33ed0e7d187af7f69d1a12c7b6a (patch) | |
tree | dbe47fda5a1271dc5404c9c96d7965a870320fc2 /arch/um/include/asm | |
parent | um: ubd: Fix for processes stuck in D state forever (diff) | |
download | linux-970e51feaddbc33ed0e7d187af7f69d1a12c7b6a.tar.gz linux-970e51feaddbc33ed0e7d187af7f69d1a12c7b6a.tar.bz2 linux-970e51feaddbc33ed0e7d187af7f69d1a12c7b6a.zip |
um: Add support for CONFIG_STACKTRACE
Add stacktrace support for User Mode Linux
Signed-off-by: Daniel Walter <dwalter@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/include/asm')
-rw-r--r-- | arch/um/include/asm/stacktrace.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/um/include/asm/stacktrace.h b/arch/um/include/asm/stacktrace.h new file mode 100644 index 000000000000..9a864328c67f --- /dev/null +++ b/arch/um/include/asm/stacktrace.h @@ -0,0 +1,42 @@ +#ifndef _ASM_UML_STACKTRACE_H +#define _ASM_UML_STACKTRACE_H + +#include <linux/uaccess.h> +#include <linux/ptrace.h> + +struct stack_frame { + struct stack_frame *next_frame; + unsigned long return_address; +}; + +struct stacktrace_ops { + void (*address)(void *data, unsigned long address, int reliable); +}; + +#ifdef CONFIG_FRAME_POINTER +static inline unsigned long +get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs) +{ + if (!task || task == current) + return segv_regs ? PT_REGS_BP(segv_regs) : current_bp(); + return KSTK_EBP(task); +} +#else +static inline unsigned long +get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs) +{ + return 0; +} +#endif + +static inline unsigned long +*get_stack_pointer(struct task_struct *task, struct pt_regs *segv_regs) +{ + if (!task || task == current) + return segv_regs ? (unsigned long *)PT_REGS_SP(segv_regs) : current_sp(); + return (unsigned long *)KSTK_ESP(task); +} + +void dump_trace(struct task_struct *tsk, const struct stacktrace_ops *ops, void *data); + +#endif /* _ASM_UML_STACKTRACE_H */ |