include/asm/ptrace.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _ASMAXP_PTRACE_H
0003 #define _ASMAXP_PTRACE_H
0004
0005 #include <uapi/asm/ptrace.h>
0006
0007
0008 #define arch_has_single_step()      (1)
0009 #define user_mode(regs) (((regs)->ps & 8) != 0)
0010 #define instruction_pointer(regs) ((regs)->pc)
0011 #define profile_pc(regs) instruction_pointer(regs)
0012 #define current_user_stack_pointer() rdusp()
0013
0014 #define task_pt_regs(task) \
0015   ((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)
0016
0017 #define current_pt_regs() \
0018   ((struct pt_regs *) ((char *)current_thread_info() + 2*PAGE_SIZE) - 1)
0019 #define signal_pt_regs current_pt_regs
0020
0021 #define force_successful_syscall_return() (current_pt_regs()->r0 = 0)
0022
0023 static inline unsigned long regs_return_value(struct pt_regs *regs)
0024 {
0025     return regs->r0;
0026 }
0027
0028 #endif