1 /*
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
12
13 /* 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
22 #define DSP_BASE 71 /* 3 more hi / lo register pairs */
23 #define DSP_CONTROL 77
24 #define ACX 78
25
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 */
30 struct pt_regs {
31 #ifdef CONFIG_32BIT
32 /* 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;
41 unsigned long hi;
42 unsigned long lo;
43 #ifdef CONFIG_CPU_HAS_SMARTMIPS
44 unsigned long acx;
45 #endif
46 unsigned long cp0_badvaddr;
47 unsigned long cp0_cause;
48 unsigned long cp0_epc;
49 #ifdef CONFIG_MIPS_MT_SMTC
50 unsigned long cp0_tcstatus;
51 #endif /* CONFIG_MIPS_MT_SMTC */
52 } __attribute__ ((aligned (8)));
53
54 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
55 #define PTRACE_GETREGS 12
56 #define PTRACE_SETREGS 13
57 #define PTRACE_GETFPREGS 14
58 #define PTRACE_SETFPREGS 15
59 /* #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
67 /* 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
74 #ifdef __KERNEL__
75
76 #include <linux/linkage.h>
77 #include <asm/isadep.h>
78
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
87 extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
88
89 extern NORET_TYPE void die(const char *, const struct pt_regs *) ATTRIB_NORET;
90
die_if_kernel(const char * str,const struct pt_regs * regs)91 static inline void die_if_kernel(const char *str, const struct pt_regs *regs)
92 {
93 if (unlikely(!user_mode(regs)))
94 die(str, regs);
95 }
96
97 #endif
98
99 #endif /* _ASM_PTRACE_H */
100