| /* |
| * Copyright (C) 1991, 1992 Linus Torvalds |
| * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs |
| */ |
| |
| #ifndef _ASM_X86_STACKTRACE_H |
| #define _ASM_X86_STACKTRACE_H |
| |
| #include <linux/uaccess.h> |
| |
| extern int kstack_depth_to_print; |
| |
| struct thread_info; |
| struct stacktrace_ops; |
| |
| typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo, |
| unsigned long *stack, |
| unsigned long bp, |
| const struct stacktrace_ops *ops, |
| void *data, |
| unsigned long *end, |
| int *graph); |
| |
| extern unsigned long |
| print_context_stack(struct thread_info *tinfo, |
| unsigned long *stack, unsigned long bp, |
| const struct stacktrace_ops *ops, void *data, |
| unsigned long *end, int *graph); |
| |
| extern unsigned long |
| print_context_stack_bp(struct thread_info *tinfo, |
| unsigned long *stack, unsigned long bp, |
| const struct stacktrace_ops *ops, void *data, |
| unsigned long *end, int *graph); |
| |
| /* Generic stack tracer with callbacks */ |
| |
| struct stacktrace_ops { |
| void (*warning)(void *data, char *msg); |
| /* msg must contain %s for the symbol */ |
| void (*warning_symbol)(void *data, char *msg, unsigned long symbol); |
| void (*address)(void *data, unsigned long address, int reliable); |
| /* On negative return stop dumping */ |
| int (*stack)(void *data, char *name); |
| walk_stack_t walk_stack; |
| }; |
| |
| void dump_trace(struct task_struct *tsk, struct pt_regs *regs, |
| unsigned long *stack, unsigned long bp, |
| const struct stacktrace_ops *ops, void *data); |
| |
| #ifdef CONFIG_X86_32 |
| #define STACKSLOTS_PER_LINE 8 |
| #define get_bp(bp) asm("movl %%ebp, %0" : "=r" (bp) :) |
| #else |
| #define STACKSLOTS_PER_LINE 4 |
| #define get_bp(bp) asm("movq %%rbp, %0" : "=r" (bp) :) |
| #endif |
| |
| extern void |
| show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, |
| unsigned long *stack, unsigned long bp, char *log_lvl); |
| |
| extern void |
| show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs, |
| unsigned long *sp, unsigned long bp, char *log_lvl); |
| |
| extern unsigned int code_bytes; |
| |
| /* The form of the top of the frame on the stack */ |
| struct stack_frame { |
| struct stack_frame *next_frame; |
| unsigned long return_address; |
| }; |
| |
| struct stack_frame_ia32 { |
| u32 next_frame; |
| u32 return_address; |
| }; |
| |
| static inline unsigned long rewind_frame_pointer(int n) |
| { |
| struct stack_frame *frame; |
| |
| get_bp(frame); |
| |
| #ifdef CONFIG_FRAME_POINTER |
| while (n--) { |
| if (probe_kernel_address(&frame->next_frame, frame)) |
| break; |
| } |
| #endif |
| |
| return (unsigned long)frame; |
| } |
| |
| #endif /* _ASM_X86_STACKTRACE_H */ |