1#ifndef __ASM_SH_PTRACE_H
2#define __ASM_SH_PTRACE_H
3
4/*
5 * Copyright (C) 1999, 2000  Niibe Yutaka
6 *
7 */
8
9/*
10 * GCC defines register number like this:
11 * -----------------------------
12 *	 0 - 15 are integer registers
13 *	17 - 22 are control/special registers
14 *	24 - 39 fp registers
15 *	40 - 47 xd registers
16 *	48 -    fpscr register
17 * -----------------------------
18 *
19 * We follows above, except:
20 *	16 --- program counter (PC)
21 *	22 --- syscall #
22 *	23 --- floating point communication register
23 */
24#define REG_REG0	 0
25#define REG_REG15	15
26
27#define REG_PC		16
28
29#define REG_PR		17
30#define REG_SR		18
31#define REG_GBR      	19
32#define REG_MACH	20
33#define REG_MACL	21
34
35#define REG_SYSCALL	22
36
37#define REG_FPREG0	23
38#define REG_FPREG15	38
39#define REG_XFREG0	39
40#define REG_XFREG15	54
41
42#define REG_FPSCR	55
43#define REG_FPUL	56
44
45/* options set using PTRACE_SETOPTIONS */
46#define PTRACE_O_TRACESYSGOOD     0x00000001
47
48/*
49 * This struct defines the way the registers are stored on the
50 * kernel stack during a system call or other kernel entry.
51 */
52struct pt_regs {
53	unsigned long regs[16];
54	unsigned long pc;
55	unsigned long pr;
56	unsigned long sr;
57	unsigned long gbr;
58	unsigned long mach;
59	unsigned long macl;
60	long tra;
61};
62
63/*
64 * This struct defines the way the DSP registers are stored on the
65 * kernel stack during a system call or other kernel entry.
66 */
67struct pt_dspregs {
68	unsigned long	a1;
69	unsigned long	a0g;
70	unsigned long	a1g;
71	unsigned long	m0;
72	unsigned long	m1;
73	unsigned long	a0;
74	unsigned long	x0;
75	unsigned long	x1;
76	unsigned long	y0;
77	unsigned long	y1;
78	unsigned long	dsr;
79	unsigned long	rs;
80	unsigned long	re;
81	unsigned long	mod;
82};
83
84#define	PTRACE_GETDSPREGS	55
85#define	PTRACE_SETDSPREGS	56
86
87#ifdef __KERNEL__
88#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
89#define instruction_pointer(regs) ((regs)->pc)
90extern void show_regs(struct pt_regs *);
91
92#ifdef CONFIG_SH_DSP
93#define task_pt_regs(task) \
94	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
95		 - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
96#else
97#define task_pt_regs(task) \
98	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
99		 - sizeof(unsigned long)) - 1)
100#endif
101
102static inline unsigned long profile_pc(struct pt_regs *regs)
103{
104	unsigned long pc = instruction_pointer(regs);
105
106	if (pc >= 0xa0000000UL && pc < 0xc0000000UL)
107		pc -= 0x20000000;
108	return pc;
109}
110#endif
111
112#endif /* __ASM_SH_PTRACE_H */
113