tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef __ASM_SH_PTRACE_H
2#define __ASM_SH_PTRACE_H
3
4/*
5 * Copyright (C) 1999, 2000 Niibe Yutaka
6 *
7 */
8#if defined(__SH5__)
9struct pt_regs {
10 unsigned long long pc;
11 unsigned long long sr;
12 unsigned long long syscall_nr;
13 unsigned long long regs[63];
14 unsigned long long tregs[8];
15 unsigned long long pad[2];
16};
17#else
18/*
19 * GCC defines register number like this:
20 * -----------------------------
21 * 0 - 15 are integer registers
22 * 17 - 22 are control/special registers
23 * 24 - 39 fp registers
24 * 40 - 47 xd registers
25 * 48 - fpscr register
26 * -----------------------------
27 *
28 * We follows above, except:
29 * 16 --- program counter (PC)
30 * 22 --- syscall #
31 * 23 --- floating point communication register
32 */
33#define REG_REG0 0
34#define REG_REG15 15
35
36#define REG_PC 16
37
38#define REG_PR 17
39#define REG_SR 18
40#define REG_GBR 19
41#define REG_MACH 20
42#define REG_MACL 21
43
44#define REG_SYSCALL 22
45
46#define REG_FPREG0 23
47#define REG_FPREG15 38
48#define REG_XFREG0 39
49#define REG_XFREG15 54
50
51#define REG_FPSCR 55
52#define REG_FPUL 56
53
54/*
55 * This struct defines the way the registers are stored on the
56 * kernel stack during a system call or other kernel entry.
57 */
58struct pt_regs {
59 unsigned long regs[16];
60 unsigned long pc;
61 unsigned long pr;
62 unsigned long sr;
63 unsigned long gbr;
64 unsigned long mach;
65 unsigned long macl;
66 long tra;
67};
68
69/*
70 * This struct defines the way the DSP registers are stored on the
71 * kernel stack during a system call or other kernel entry.
72 */
73struct pt_dspregs {
74 unsigned long a1;
75 unsigned long a0g;
76 unsigned long a1g;
77 unsigned long m0;
78 unsigned long m1;
79 unsigned long a0;
80 unsigned long x0;
81 unsigned long x1;
82 unsigned long y0;
83 unsigned long y1;
84 unsigned long dsr;
85 unsigned long rs;
86 unsigned long re;
87 unsigned long mod;
88};
89
90#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
91
92#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
93#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
94
95#define PTRACE_GETDSPREGS 55
96#define PTRACE_SETDSPREGS 56
97#endif
98
99#ifdef __KERNEL__
100#include <asm/addrspace.h>
101
102#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
103#define instruction_pointer(regs) ((unsigned long)(regs)->pc)
104
105extern void show_regs(struct pt_regs *);
106
107/*
108 * These are defined as per linux/ptrace.h.
109 */
110struct task_struct;
111
112#define arch_has_single_step() (1)
113extern void user_enable_single_step(struct task_struct *);
114extern void user_disable_single_step(struct task_struct *);
115
116#ifdef CONFIG_SH_DSP
117#define task_pt_regs(task) \
118 ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
119 - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
120#else
121#define task_pt_regs(task) \
122 ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
123 - sizeof(unsigned long)) - 1)
124#endif
125
126static inline unsigned long profile_pc(struct pt_regs *regs)
127{
128 unsigned long pc = instruction_pointer(regs);
129
130#ifdef P2SEG
131 if (pc >= P2SEG && pc < P3SEG)
132 pc -= 0x20000000;
133#endif
134
135 return pc;
136}
137#endif /* __KERNEL__ */
138
139#endif /* __ASM_SH_PTRACE_H */