summaryrefslogtreecommitdiffstats
path: root/arch/blackfin/include/asm/ptrace.h
blob: 7854d4367c15c2247c70ef0a07af9ee933df0887 (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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/*
 * Copyright 2004-2008 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _BFIN_PTRACE_H
#define _BFIN_PTRACE_H

/*
 * GCC defines register number like this:
 * -----------------------------
 *       0 - 7 are data registers R0-R7
 *       8 - 15 are address registers P0-P7
 *      16 - 31 dsp registers I/B/L0 -- I/B/L3 & M0--M3
 *      32 - 33 A registers A0 & A1
 *      34 -    status register
 * -----------------------------
 *
 * We follows above, except:
 *      32-33 --- Low 32-bit of A0&1
 *      34-35 --- High 8-bit of A0&1
 */

#ifndef __ASSEMBLY__

struct task_struct;

/* this struct defines the way the registers are stored on the
   stack during a system call. */

struct pt_regs {
	long orig_pc;
	long ipend;
	long seqstat;
	long rete;
	long retn;
	long retx;
	long pc;		/* PC == RETI */
	long rets;
	long reserved;		/* Used as scratch during system calls */
	long astat;
	long lb1;
	long lb0;
	long lt1;
	long lt0;
	long lc1;
	long lc0;
	long a1w;
	long a1x;
	long a0w;
	long a0x;
	long b3;
	long b2;
	long b1;
	long b0;
	long l3;
	long l2;
	long l1;
	long l0;
	long m3;
	long m2;
	long m1;
	long m0;
	long i3;
	long i2;
	long i1;
	long i0;
	long usp;
	long fp;
	long p5;
	long p4;
	long p3;
	long p2;
	long p1;
	long p0;
	long r7;
	long r6;
	long r5;
	long r4;
	long r3;
	long r2;
	long r1;
	long r0;
	long orig_r0;
	long orig_p0;
	long syscfg;
};

/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS            12
#define PTRACE_SETREGS            13	/* ptrace signal  */

#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 PS_S  (0x0002)

#ifdef __KERNEL__

/* user_mode returns true if only one bit is set in IPEND, other than the
   master interrupt enable.  */
#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
extern void show_regs(struct pt_regs *);

#define arch_has_single_step()	(1)
/* common code demands this function */
#define ptrace_disable(child) user_disable_single_step(child)

extern int is_user_addr_valid(struct task_struct *child,
			      unsigned long start, unsigned long len);

/*
 * Get the address of the live pt_regs for the specified task.
 * These are saved onto the top kernel stack when the process
 * is not running.
 *
 * Note: if a user thread is execve'd from kernel space, the
 * kernel stack will not be empty on entry to the kernel, so
 * ptracing these tasks will fail.
 */
#define task_pt_regs(task) \
	(struct pt_regs *) \
	    ((unsigned long)task_stack_page(task) + \
	     (THREAD_SIZE - sizeof(struct pt_regs)))

#include <asm-generic/ptrace.h>

#endif  /*  __KERNEL__  */

#endif				/* __ASSEMBLY__ */

/*
 * Offsets used by 'ptrace' system call interface.
 */

#define PT_R0 204
#define PT_R1 200
#define PT_R2 196
#define PT_R3 192
#define PT_R4 188
#define PT_R5 184
#define PT_R6 180
#define PT_R7 176
#define PT_P0 172
#define PT_P1 168
#define PT_P2 164
#define PT_P3 160
#define PT_P4 156
#define PT_P5 152
#define PT_FP 148
#define PT_USP 144
#define PT_I0 140
#define PT_I1 136
#define PT_I2 132
#define PT_I3 128
#define PT_M0 124
#define PT_M1 120
#define PT_M2 116
#define PT_M3 112
#define PT_L0 108
#define PT_L1 104
#define PT_L2 100
#define PT_L3 96
#define PT_B0 92
#define PT_B1 88
#define PT_B2 84
#define PT_B3 80
#define PT_A0X 76
#define PT_A0W 72
#define PT_A1X 68
#define PT_A1W 64
#define PT_LC0 60
#define PT_LC1 56
#define PT_LT0 52
#define PT_LT1 48
#define PT_LB0 44
#define PT_LB1 40
#define PT_ASTAT 36
#define PT_RESERVED 32
#define PT_RETS 28
#define PT_PC 24
#define PT_RETX 20
#define PT_RETN 16
#define PT_RETE 12
#define PT_SEQSTAT 8
#define PT_IPEND 4

#define PT_ORIG_R0 208
#define PT_ORIG_P0 212
#define PT_SYSCFG 216
#define PT_TEXT_ADDR 220
#define PT_TEXT_END_ADDR 224
#define PT_DATA_ADDR 228
#define PT_FDPIC_EXEC 232
#define PT_FDPIC_INTERP 236

#define PT_LAST_PSEUDO PT_FDPIC_INTERP

#endif				/* _BFIN_PTRACE_H */
OpenPOWER on IntegriCloud