Line data    Source code

       1             : /* SPDX-License-Identifier: GPL-2.0 */
       2             : #ifndef _ASM_UML_STACKTRACE_H
       3             : #define _ASM_UML_STACKTRACE_H
       4             : 
       5             : #include <linux/uaccess.h>
       6             : #include <linux/ptrace.h>
       7             : 
       8             : struct stack_frame {
       9             :         struct stack_frame *next_frame;
      10             :         unsigned long return_address;
      11             : };
      12             : 
      13             : struct stacktrace_ops {
      14             :         void (*address)(void *data, unsigned long address, int reliable);
      15             : };
      16             : 
      17             : #ifdef CONFIG_FRAME_POINTER
      18             : static inline unsigned long
      19           1 : get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
      20             : {
      21           2 :         if (!task || task == current)
      22           1 :                 return segv_regs ? PT_REGS_BP(segv_regs) : current_bp();
      23           0 :         return KSTK_EBP(task);
      24             : }
      25             : #else
      26             : static inline unsigned long
      27             : get_frame_pointer(struct task_struct *task, struct pt_regs *segv_regs)
      28             : {
      29             :         return 0;
      30             : }
      31             : #endif
      32             : 
      33             : static inline unsigned long
      34           2 : *get_stack_pointer(struct task_struct *task, struct pt_regs *segv_regs)
      35             : {
      36           3 :         if (!task || task == current)
      37           2 :                 return segv_regs ? (unsigned long *)PT_REGS_SP(segv_regs) : current_sp();
      38           0 :         return (unsigned long *)KSTK_ESP(task);
      39             : }
      40             : 
      41             : void dump_trace(struct task_struct *tsk, const struct stacktrace_ops *ops, void *data);
      42             : 
      43             : #endif /* _ASM_UML_STACKTRACE_H */