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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
8 */
9#ifndef _ASM_PTRACE_H
10#define _ASM_PTRACE_H
11
Linus Torvalds1da177e2005-04-16 15:20:36 -070012
Linus Torvalds1da177e2005-04-16 15:20:36 -070013/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
14#define FPR_BASE 32
15#define PC 64
16#define CAUSE 65
17#define BADVADDR 66
18#define MMHI 67
19#define MMLO 68
20#define FPC_CSR 69
21#define FPC_EIR 70
Ralf Baechlee50c0a82005-05-31 11:49:19 +000022#define DSP_BASE 71 /* 3 more hi / lo register pairs */
23#define DSP_CONTROL 77
Franck Bui-Huu9693a852007-02-02 17:41:47 +010024#define ACX 78
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26/*
27 * This struct defines the way the registers are stored on the stack during a
28 * system call/exception. As usual the registers k0/k1 aren't being saved.
29 */
30struct pt_regs {
Ralf Baechle875d43e2005-09-03 15:56:16 -070031#ifdef CONFIG_32BIT
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 /* Pad bytes for argument save space on the stack. */
33 unsigned long pad0[6];
34#endif
35
36 /* Saved main processor registers. */
37 unsigned long regs[32];
38
39 /* Saved special registers. */
40 unsigned long cp0_status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 unsigned long hi;
Ralf Baechlee50c0a82005-05-31 11:49:19 +000042 unsigned long lo;
Franck Bui-Huu9693a852007-02-02 17:41:47 +010043#ifdef CONFIG_CPU_HAS_SMARTMIPS
44 unsigned long acx;
45#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 unsigned long cp0_badvaddr;
47 unsigned long cp0_cause;
48 unsigned long cp0_epc;
Ralf Baechle41c594a2006-04-05 09:45:45 +010049#ifdef CONFIG_MIPS_MT_SMTC
50 unsigned long cp0_tcstatus;
Ralf Baechle41c594a2006-04-05 09:45:45 +010051#endif /* CONFIG_MIPS_MT_SMTC */
Franck Bui-Huu0e90f49b2006-09-29 11:08:59 +020052} __attribute__ ((aligned (8)));
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
Daniel Jacobowitzea3d7102005-09-28 18:11:15 -040055#define PTRACE_GETREGS 12
56#define PTRACE_SETREGS 13
57#define PTRACE_GETFPREGS 14
58#define PTRACE_SETFPREGS 15
Linus Torvalds1da177e2005-04-16 15:20:36 -070059/* #define PTRACE_GETFPXREGS 18 */
60/* #define PTRACE_SETFPXREGS 19 */
61
62#define PTRACE_OLDSETOPTIONS 21
63
64#define PTRACE_GET_THREAD_AREA 25
65#define PTRACE_SET_THREAD_AREA 26
66
Daniel Jacobowitzea3d7102005-09-28 18:11:15 -040067/* Calls to trace a 64bit program from a 32bit program. */
68#define PTRACE_PEEKTEXT_3264 0xc0
69#define PTRACE_PEEKDATA_3264 0xc1
70#define PTRACE_POKETEXT_3264 0xc2
71#define PTRACE_POKEDATA_3264 0xc3
72#define PTRACE_GET_THREAD_AREA_3264 0xc4
73
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#ifdef __KERNEL__
75
76#include <linux/linkage.h>
Atsushi Nemoto8f9a2b32006-09-07 01:00:22 +090077#include <asm/isadep.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79/*
80 * Does the process account for user or for system time?
81 */
82#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
83
84#define instruction_pointer(regs) ((regs)->cp0_epc)
85#define profile_pc(regs) instruction_pointer(regs)
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
88
Ralf Baechleeae23f22007-10-14 23:27:21 +010089extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;
Ralf Baechle2d911e92006-12-10 15:02:17 +000090
Ralf Baechleeae23f22007-10-14 23:27:21 +010091static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
Ralf Baechle2d911e92006-12-10 15:02:17 +000092{
93 if (unlikely(!user_mode(regs)))
94 die(str, regs);
95}
96
Linus Torvalds1da177e2005-04-16 15:20:36 -070097#endif
98
99#endif /* _ASM_PTRACE_H */