summaryrefslogtreecommitdiffstats
path: root/arch/sh/include/asm/ptrace.h
blob: b86aeabba61ae4dd68a5cdf95054365b019eba73 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
#ifndef __ASM_SH_PTRACE_H
#define __ASM_SH_PTRACE_H

/*
 * Copyright (C) 1999, 2000  Niibe Yutaka
 *
 */
#if defined(__SH5__)
struct pt_regs {
	unsigned long long pc;
	unsigned long long sr;
	unsigned long long syscall_nr;
	unsigned long long regs[63];
	unsigned long long tregs[8];
	unsigned long long pad[2];
};
#else
/*
 * GCC defines register number like this:
 * -----------------------------
 *	 0 - 15 are integer registers
 *	17 - 22 are control/special registers
 *	24 - 39 fp registers
 *	40 - 47 xd registers
 *	48 -    fpscr register
 * -----------------------------
 *
 * We follows above, except:
 *	16 --- program counter (PC)
 *	22 --- syscall #
 *	23 --- floating point communication register
 */
#define REG_REG0	 0
#define REG_REG15	15

#define REG_PC		16

#define REG_PR		17
#define REG_SR		18
#define REG_GBR		19
#define REG_MACH	20
#define REG_MACL	21

#define REG_SYSCALL	22

#define REG_FPREG0	23
#define REG_FPREG15	38
#define REG_XFREG0	39
#define REG_XFREG15	54

#define REG_FPSCR	55
#define REG_FPUL	56

/*
 * This struct defines the way the registers are stored on the
 * kernel stack during a system call or other kernel entry.
 */
struct pt_regs {
	unsigned long regs[16];
	unsigned long pc;
	unsigned long pr;
	unsigned long sr;
	unsigned long gbr;
	unsigned long mach;
	unsigned long macl;
	long tra;
};

/*
 * This struct defines the way the DSP registers are stored on the
 * kernel stack during a system call or other kernel entry.
 */
struct pt_dspregs {
	unsigned long	a1;
	unsigned long	a0g;
	unsigned long	a1g;
	unsigned long	m0;
	unsigned long	m1;
	unsigned long	a0;
	unsigned long	x0;
	unsigned long	x1;
	unsigned long	y0;
	unsigned long	y1;
	unsigned long	dsr;
	unsigned long	rs;
	unsigned long	re;
	unsigned long	mod;
};

#define PTRACE_GETFDPIC		31	/* get the ELF fdpic loadmap address */

#define PTRACE_GETFDPIC_EXEC	0	/* [addr] request the executable loadmap */
#define PTRACE_GETFDPIC_INTERP	1	/* [addr] request the interpreter loadmap */

#define	PTRACE_GETDSPREGS	55
#define	PTRACE_SETDSPREGS	56
#endif

#ifdef __KERNEL__
#include <asm/addrspace.h>

#define user_mode(regs)			(((regs)->sr & 0x40000000)==0)
#define instruction_pointer(regs)	((unsigned long)(regs)->pc)

extern void show_regs(struct pt_regs *);

/*
 * These are defined as per linux/ptrace.h.
 */
struct task_struct;

#define arch_has_single_step()	(1)
extern void user_enable_single_step(struct task_struct *);
extern void user_disable_single_step(struct task_struct *);

#ifdef CONFIG_SH_DSP
#define task_pt_regs(task) \
	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
		 - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
#else
#define task_pt_regs(task) \
	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
		 - sizeof(unsigned long)) - 1)
#endif

static inline unsigned long profile_pc(struct pt_regs *regs)
{
	unsigned long pc = instruction_pointer(regs);

#ifdef P2SEG
	if (pc >= P2SEG && pc < P3SEG)
		pc -= 0x20000000;
#endif

	return pc;
}
#endif /* __KERNEL__ */

#endif /* __ASM_SH_PTRACE_H */
OpenPOWER on IntegriCloud