LXR linux/arch/x86/um/asm/ptrace.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __UM_X86_PTRACE_H
   3#define __UM_X86_PTRACE_H
   4
   5#include <linux/compiler.h>
   6#ifndef CONFIG_X86_32
   7#define __FRAME_OFFSETS /* Needed to get the R* macros */
   8#endif
   9#include <asm/ptrace-generic.h>
  10
  11#define user_mode(r) UPT_IS_USER(&(r)->regs)
  12
  13#define PT_REGS_AX(r) UPT_AX(&(r)->regs)
  14#define PT_REGS_BX(r) UPT_BX(&(r)->regs)
  15#define PT_REGS_CX(r) UPT_CX(&(r)->regs)
  16#define PT_REGS_DX(r) UPT_DX(&(r)->regs)
  17
  18#define PT_REGS_SI(r) UPT_SI(&(r)->regs)
  19#define PT_REGS_DI(r) UPT_DI(&(r)->regs)
  20#define PT_REGS_BP(r) UPT_BP(&(r)->regs)
  21#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
  22
  23#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
  24#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
  25#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
  26#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
  27
  28#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r)
  29#define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r)
  30
  31#define PT_FIX_EXEC_STACK(sp) do ; while(0)
  32
  33#define profile_pc(regs) PT_REGS_IP(regs)
  34
  35#define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2)
  36#define PT_REGS_SET_SYSCALL_RETURN(r, res) (PT_REGS_AX(r) = (res))
  37
  38static inline long regs_return_value(struct pt_regs *regs)
  39{
  40        return PT_REGS_AX(regs);
  41}
  42
  43/*
  44 * Forward declaration to avoid including sysdep/tls.h, which causes a
  45 * circular include, and compilation failures.
  46 */
  47struct user_desc;
  48
  49#ifdef CONFIG_X86_32
  50
  51extern int ptrace_get_thread_area(struct task_struct *child, int idx,
  52                                  struct user_desc __user *user_desc);
  53
  54extern int ptrace_set_thread_area(struct task_struct *child, int idx,
  55                                  struct user_desc __user *user_desc);
  56
  57#else
  58
  59#define PT_REGS_R8(r) UPT_R8(&(r)->regs)
  60#define PT_REGS_R9(r) UPT_R9(&(r)->regs)
  61#define PT_REGS_R10(r) UPT_R10(&(r)->regs)
  62#define PT_REGS_R11(r) UPT_R11(&(r)->regs)
  63#define PT_REGS_R12(r) UPT_R12(&(r)->regs)
  64#define PT_REGS_R13(r) UPT_R13(&(r)->regs)
  65#define PT_REGS_R14(r) UPT_R14(&(r)->regs)
  66#define PT_REGS_R15(r) UPT_R15(&(r)->regs)
  67
  68#include <asm/errno.h>
  69
  70static inline int ptrace_get_thread_area(struct task_struct *child, int idx,
  71                                         struct user_desc __user *user_desc)
  72{
  73        return -ENOSYS;
  74}
  75
  76static inline int ptrace_set_thread_area(struct task_struct *child, int idx,
  77                                         struct user_desc __user *user_desc)
  78{
  79        return -ENOSYS;
  80}
  81
  82extern long arch_prctl(struct task_struct *task, int option,
  83                       unsigned long __user *addr);
  84
  85#endif
  86#define user_stack_pointer(regs) PT_REGS_SP(regs)
  87#endif /* __UM_X86_PTRACE_H */
  88