LXR linux/arch/x86/um/shared/sysdep/ptrace.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __SYSDEP_X86_PTRACE_H
   3#define __SYSDEP_X86_PTRACE_H
   4
   5#include <generated/user_constants.h>
   6#include <sysdep/faultinfo.h>
   7
   8#define MAX_REG_OFFSET (UM_FRAME_SIZE)
   9#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
  10
  11#define REGS_IP(r) ((r)[HOST_IP])
  12#define REGS_SP(r) ((r)[HOST_SP])
  13#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
  14#define REGS_AX(r) ((r)[HOST_AX])
  15#define REGS_BX(r) ((r)[HOST_BX])
  16#define REGS_CX(r) ((r)[HOST_CX])
  17#define REGS_DX(r) ((r)[HOST_DX])
  18#define REGS_SI(r) ((r)[HOST_SI])
  19#define REGS_DI(r) ((r)[HOST_DI])
  20#define REGS_BP(r) ((r)[HOST_BP])
  21#define REGS_CS(r) ((r)[HOST_CS])
  22#define REGS_SS(r) ((r)[HOST_SS])
  23#define REGS_DS(r) ((r)[HOST_DS])
  24#define REGS_ES(r) ((r)[HOST_ES])
  25
  26#define UPT_IP(r) REGS_IP((r)->gp)
  27#define UPT_SP(r) REGS_SP((r)->gp)
  28#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
  29#define UPT_AX(r) REGS_AX((r)->gp)
  30#define UPT_BX(r) REGS_BX((r)->gp)
  31#define UPT_CX(r) REGS_CX((r)->gp)
  32#define UPT_DX(r) REGS_DX((r)->gp)
  33#define UPT_SI(r) REGS_SI((r)->gp)
  34#define UPT_DI(r) REGS_DI((r)->gp)
  35#define UPT_BP(r) REGS_BP((r)->gp)
  36#define UPT_CS(r) REGS_CS((r)->gp)
  37#define UPT_SS(r) REGS_SS((r)->gp)
  38#define UPT_DS(r) REGS_DS((r)->gp)
  39#define UPT_ES(r) REGS_ES((r)->gp)
  40
  41#ifdef __i386__
  42#include "ptrace_32.h"
  43#else
  44#include "ptrace_64.h"
  45#endif
  46
  47struct syscall_args {
  48        unsigned long args[6];
  49};
  50
  51#define SYSCALL_ARGS(r) ((struct syscall_args) \
  52                         { .args = { UPT_SYSCALL_ARG1(r),        \
  53                                     UPT_SYSCALL_ARG2(r),        \
  54                                     UPT_SYSCALL_ARG3(r),        \
  55                                     UPT_SYSCALL_ARG4(r),        \
  56                                     UPT_SYSCALL_ARG5(r),        \
  57                                     UPT_SYSCALL_ARG6(r) } } )
  58
  59struct uml_pt_regs {
  60        unsigned long gp[MAX_REG_NR];
  61        unsigned long fp[MAX_FP_NR];
  62        struct faultinfo faultinfo;
  63        long syscall;
  64        int is_user;
  65};
  66
  67#define EMPTY_UML_PT_REGS { }
  68
  69#define UPT_SYSCALL_NR(r) ((r)->syscall)
  70#define UPT_FAULTINFO(r) (&(r)->faultinfo)
  71#define UPT_IS_USER(r) ((r)->is_user)
  72
  73extern int user_context(unsigned long sp);
  74
  75#endif /* __SYSDEP_X86_PTRACE_H */
  76