include/asm-i386/ptrace.h

   1 #ifndef _I386_PTRACE_H
   2 #define _I386_PTRACE_H
   3
   4 #define EBX 0
   5 #define ECX 1
   6 #define EDX 2
   7 #define ESI 3
   8 #define EDI 4
   9 #define EBP 5
  10 #define EAX 6
  11 #define DS 7
  12 #define ES 8
  13 #define FS 9
  14 #define GS 10
  15 #define ORIG_EAX 11
  16 #define EIP 12
  17 #define CS  13
  18 #define EFL 14
  19 #define UESP 15
  20 #define SS   16
  21 #define FRAME_SIZE 17
  22
  23 /* this struct defines the way the registers are stored on the
  24    stack during a system call. */
  25
  26 struct pt_regs {
  27         long ebx;
  28         long ecx;
  29         long edx;
  30         long esi;
  31         long edi;
  32         long ebp;
  33         long eax;
  34         int  xds;
  35         int  xes;
  36         long orig_eax;
  37         long eip;
  38         int  xcs;
  39         long eflags;
  40         long esp;
  41         int  xss;
  42 };
  43
  44 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
  45 #define PTRACE_GETREGS            12
  46 #define PTRACE_SETREGS            13
  47 #define PTRACE_GETFPREGS          14
  48 #define PTRACE_SETFPREGS          15
  49 #define PTRACE_GETFPXREGS         18
  50 #define PTRACE_SETFPXREGS         19
  51
  52 #define PTRACE_OLDSETOPTIONS         21
  53
  54 #define PTRACE_GET_THREAD_AREA    25
  55 #define PTRACE_SET_THREAD_AREA    26
  56
  57 #ifdef __KERNEL__
  58
  59 #include <asm/vm86.h>
  60
  61 struct task_struct;
  62 extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code);
  63
  64 /*
  65  * user_mode_vm(regs) determines whether a register set came from user mode.
  66  * This is true if V8086 mode was enabled OR if the register set was from
  67  * protected mode with RPL-3 CS value.  This tricky test checks that with
  68  * one comparison.  Many places in the kernel can bypass this full check
  69  * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
  70  */
  71 static inline int user_mode(struct pt_regs *regs)
  72 {
  73         return (regs->xcs & 3) != 0;
  74 }
  75 static inline int user_mode_vm(struct pt_regs *regs)
  76 {
  77         return ((regs->xcs & 3) | (regs->eflags & VM_MASK)) != 0;
  78 }
  79 #define instruction_pointer(regs) ((regs)->eip)
  80 #if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
  81 extern unsigned long profile_pc(struct pt_regs *regs);
  82 #else
  83 #define profile_pc(regs) instruction_pointer(regs)
  84 #endif
  85 #endif /* __KERNEL__ */
  86
  87 #endif