Cregit: Linux 5.9: ptrace.h

Contributors: 9
Author	Tokens	Token Proportion	Commits	Commit Proportion
Linus Torvalds (pre-git)	22	26.19%	5	29.41%
蔡正龙	18	21.43%	1	5.88%
Al Viro	17	20.24%	4	23.53%
Andrew Morton	10	11.90%	2	11.76%
Nadia Yvette Chambers	7	8.33%	1	5.88%
Christoph Hellwig	5	5.95%	1	5.88%
David Howells	3	3.57%	1	5.88%
Richard Henderson	1	1.19%	1	5.88%
Greg Kroah-Hartman	1	1.19%	1	5.88%
Total	84		17

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASMAXP_PTRACE_H
#define _ASMAXP_PTRACE_H

#include <uapi/asm/ptrace.h>


#define arch_has_single_step()		(1)
#define user_mode(regs) (((regs)->ps & 8) != 0)
#define instruction_pointer(regs) ((regs)->pc)
#define profile_pc(regs) instruction_pointer(regs)
#define current_user_stack_pointer() rdusp()

#define task_pt_regs(task) \
  ((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)

#define current_pt_regs() \
  ((struct pt_regs *) ((char *)current_thread_info() + 2*PAGE_SIZE) - 1)
#define signal_pt_regs current_pt_regs

#define force_successful_syscall_return() (current_pt_regs()->r0 = 0)

static inline unsigned long regs_return_value(struct pt_regs *regs)
{
	return regs->r0;
}

#endif