| 1 | #ifndef _I386_PTRACE_H |
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| 2 | #define _I386_PTRACE_H |
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| 3 | |
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| 4 | #define EBX 0 |
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| 5 | #define ECX 1 |
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| 6 | #define EDX 2 |
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| 7 | #define ESI 3 |
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| 8 | #define EDI 4 |
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| 9 | #define EBP 5 |
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| 10 | #define EAX 6 |
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| 11 | #define DS 7 |
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| 12 | #define ES 8 |
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| 13 | #define FS 9 |
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| 14 | #define GS 10 |
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| 15 | #define ORIG_EAX 11 |
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| 16 | #define EIP 12 |
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| 17 | #define CS 13 |
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| 18 | #define EFL 14 |
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| 19 | #define UESP 15 |
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| 20 | #define SS 16 |
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| 21 | #define FRAME_SIZE 17 |
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| 22 | |
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| 23 | /* this struct defines the way the registers are stored on the |
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| 24 | stack during a system call. */ |
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| 25 | |
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| 26 | struct pt_regs { |
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| 27 | long ebx; |
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| 28 | long ecx; |
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| 29 | long edx; |
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| 30 | long esi; |
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| 31 | long edi; |
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| 32 | long ebp; |
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| 33 | long eax; |
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| 34 | int xds; |
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| 35 | int xes; |
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| 36 | long orig_eax; |
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| 37 | long eip; |
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| 38 | int xcs; |
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| 39 | long eflags; |
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| 40 | long esp; |
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| 41 | int xss; |
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| 42 | }; |
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| 43 | |
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| 44 | /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ |
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| 45 | #define PTRACE_GETREGS 12 |
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| 46 | #define PTRACE_SETREGS 13 |
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| 47 | #define PTRACE_GETFPREGS 14 |
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| 48 | #define PTRACE_SETFPREGS 15 |
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| 49 | #define PTRACE_GETFPXREGS 18 |
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| 50 | #define PTRACE_SETFPXREGS 19 |
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| 51 | |
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| 52 | #define PTRACE_OLDSETOPTIONS 21 |
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| 53 | |
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| 54 | #define PTRACE_GET_THREAD_AREA 25 |
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| 55 | #define PTRACE_SET_THREAD_AREA 26 |
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| 56 | |
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| 57 | #define PTRACE_SYSEMU 31 |
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| 58 | #define PTRACE_SYSEMU_SINGLESTEP 32 |
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| 59 | |
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| 60 | #ifdef __KERNEL__ |
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| 61 | |
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| 62 | #include <asm/vm86.h> |
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| 63 | |
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| 64 | struct task_struct; |
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| 65 | extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code); |
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| 66 | |
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| 67 | /* |
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| 68 | * user_mode_vm(regs) determines whether a register set came from user mode. |
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| 69 | * This is true if V8086 mode was enabled OR if the register set was from |
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| 70 | * protected mode with RPL-3 CS value. This tricky test checks that with |
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| 71 | * one comparison. Many places in the kernel can bypass this full check |
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| 72 | * if they have already ruled out V8086 mode, so user_mode(regs) can be used. |
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| 73 | */ |
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| 74 | static inline int user_mode(struct pt_regs *regs) |
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| 75 | { |
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| 76 | return (regs->xcs & 2) != 0; |
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| 77 | } |
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| 78 | static inline int user_mode_vm(struct pt_regs *regs) |
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| 79 | { |
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| 80 | return ((regs->xcs & 2) | (regs->eflags & VM_MASK)) != 0; |
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| 81 | } |
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| 82 | #define instruction_pointer(regs) ((regs)->eip) |
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| 83 | #if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER) |
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| 84 | extern unsigned long profile_pc(struct pt_regs *regs); |
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| 85 | #else |
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| 86 | #define profile_pc(regs) instruction_pointer(regs) |
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| 87 | #endif |
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| 88 | #endif /* __KERNEL__ */ |
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| 89 | |
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| 90 | #endif |
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