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, 1995, 1996, 1997, 1998, 1999, 2000 by Ralf Baechle
7 *
8 * Machine dependent structs and defines to help the user use
9 * the ptrace system call.
10 */
11#ifndef _ASM_PTRACE_H
12#define _ASM_PTRACE_H
13
14#include <asm/isadep.h>
15
16/* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
17#define FPR_BASE	32
18#define PC		64
19#define CAUSE		65
20#define BADVADDR	66
21#define MMHI		67
22#define MMLO		68
23#define FPC_CSR		69
24#define FPC_EIR		70
25
26#ifndef __ASSEMBLY__
27/*
28 * This struct defines the way the registers are stored on the stack during a
29 * system call/exception. As usual the registers k0/k1 aren't being saved.
30 */
31struct pt_regs {
32	/* Pad bytes for argument save space on the stack. */
33	unsigned long pad0[6];
34
35	/* Saved main processor registers. */
36	unsigned long regs[32];
37
38	/* Other saved registers. */
39	unsigned long lo;
40	unsigned long hi;
41
42	/*
43	 * saved cp0 registers
44	 */
45	unsigned long cp0_epc;
46	unsigned long cp0_badvaddr;
47	unsigned long cp0_status;
48	unsigned long cp0_cause;
49};
50
51#define __str2(x) #x
52#define __str(x) __str2(x)
53
54#define save_static_function(symbol)                                    \
55__asm__ (                                                               \
56        ".globl\t" #symbol "\n\t"                                       \
57        ".align\t2\n\t"                                                 \
58        ".type\t" #symbol ", @function\n\t"                             \
59        ".ent\t" #symbol ", 0\n"                                        \
60        #symbol":\n\t"                                                  \
61        ".frame\t$29, 0, $31\n\t"                                       \
62        "sw\t$16,"__str(PT_R16)"($29)\t\t\t# save_static_function\n\t"  \
63        "sw\t$17,"__str(PT_R17)"($29)\n\t"                              \
64        "sw\t$18,"__str(PT_R18)"($29)\n\t"                              \
65        "sw\t$19,"__str(PT_R19)"($29)\n\t"                              \
66        "sw\t$20,"__str(PT_R20)"($29)\n\t"                              \
67        "sw\t$21,"__str(PT_R21)"($29)\n\t"                              \
68        "sw\t$22,"__str(PT_R22)"($29)\n\t"                              \
69        "sw\t$23,"__str(PT_R23)"($29)\n\t"                              \
70        "sw\t$30,"__str(PT_R30)"($29)\n\t"                              \
71        ".end\t" #symbol "\n\t"                                         \
72        ".size\t" #symbol",. - " #symbol)
73
74/* Used in declaration of save_static functions.  */
75#define static_unused static __attribute__((unused))
76
77#endif /* !__ASSEMBLY__ */
78
79/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
80/* #define PTRACE_GETREGS		12 */
81/* #define PTRACE_SETREGS		13 */
82/* #define PTRACE_GETFPREGS		14 */
83/* #define PTRACE_SETFPREGS		15 */
84/* #define PTRACE_GETFPXREGS		18 */
85/* #define PTRACE_SETFPXREGS		19 */
86
87#define PTRACE_SETOPTIONS	21
88
89/* options set using PTRACE_SETOPTIONS */
90#define PTRACE_O_TRACESYSGOOD	0x00000001
91
92#ifdef __ASSEMBLY__
93#include <asm/offset.h>
94#endif
95
96#ifdef __KERNEL__
97
98#ifndef __ASSEMBLY__
99/*
100 * Does the process account for user or for system time?
101 */
102#define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
103
104#define instruction_pointer(regs) ((regs)->cp0_epc)
105
106extern void show_regs(struct pt_regs *);
107#endif /* !__ASSEMBLY__ */
108
109#endif
110
111#endif /* _ASM_PTRACE_H */
112