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
  47 struct 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
  59 struct 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
  73 extern int user_context(unsigned long sp);
  74
  75 #endif /* __SYSDEP_X86_PTRACE_H */