summaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm/ptrace.h
blob: ef8c7c068f53a3b3dfbaef79bcf9a5fa089b60f6 (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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
#ifndef __SPARC_PTRACE_H
#define __SPARC_PTRACE_H

#if defined(__sparc__) && defined(__arch64__)
/* 64 bit sparc */
#include <asm/pstate.h>

/* This struct defines the way the registers are stored on the
 * stack during a system call and basically all traps.
 */

/* This magic value must have the low 9 bits clear,
 * as that is where we encode the %tt value, see below.
 */
#define PT_REGS_MAGIC 0x57ac6c00

#ifndef __ASSEMBLY__

#include <linux/types.h>

struct pt_regs {
	unsigned long u_regs[16]; /* globals and ins */
	unsigned long tstate;
	unsigned long tpc;
	unsigned long tnpc;
	unsigned int y;

	/* We encode a magic number, PT_REGS_MAGIC, along
	 * with the %tt (trap type) register value at trap
	 * entry time.  The magic number allows us to identify
	 * accurately a trap stack frame in the stack
	 * unwinder, and the %tt value allows us to test
	 * things like "in a system call" etc. for an arbitray
	 * process.
	 *
	 * The PT_REGS_MAGIC is chosen such that it can be
	 * loaded completely using just a sethi instruction.
	 */
	unsigned int magic;
};

struct pt_regs32 {
	unsigned int psr;
	unsigned int pc;
	unsigned int npc;
	unsigned int y;
	unsigned int u_regs[16]; /* globals and ins */
};

/* A V9 register window */
struct reg_window {
	unsigned long locals[8];
	unsigned long ins[8];
};

/* A 32-bit register window. */
struct reg_window32 {
	unsigned int locals[8];
	unsigned int ins[8];
};

/* A V9 Sparc stack frame */
struct sparc_stackf {
	unsigned long locals[8];
        unsigned long ins[6];
	struct sparc_stackf *fp;
	unsigned long callers_pc;
	char *structptr;
	unsigned long xargs[6];
	unsigned long xxargs[1];
};

/* A 32-bit Sparc stack frame */
struct sparc_stackf32 {
	unsigned int locals[8];
        unsigned int ins[6];
	unsigned int fp;
	unsigned int callers_pc;
	unsigned int structptr;
	unsigned int xargs[6];
	unsigned int xxargs[1];
};

struct sparc_trapf {
	unsigned long locals[8];
	unsigned long ins[8];
	unsigned long _unused;
	struct pt_regs *regs;
};
#endif /* (!__ASSEMBLY__) */
#else
/* 32 bit sparc */

#include <asm/psr.h>

/* This struct defines the way the registers are stored on the
 * stack during a system call and basically all traps.
 */
#ifndef __ASSEMBLY__

#include <linux/types.h>

struct pt_regs {
	unsigned long psr;
	unsigned long pc;
	unsigned long npc;
	unsigned long y;
	unsigned long u_regs[16]; /* globals and ins */
};

/* A 32-bit register window. */
struct reg_window32 {
	unsigned long locals[8];
	unsigned long ins[8];
};

/* A Sparc stack frame */
struct sparc_stackf {
	unsigned long locals[8];
        unsigned long ins[6];
	struct sparc_stackf *fp;
	unsigned long callers_pc;
	char *structptr;
	unsigned long xargs[6];
	unsigned long xxargs[1];
};
#endif /* (!__ASSEMBLY__) */

#endif /* (defined(__sparc__) && defined(__arch64__))*/

#ifndef __ASSEMBLY__

#define TRACEREG_SZ	sizeof(struct pt_regs)
#define STACKFRAME_SZ	sizeof(struct sparc_stackf)

#define TRACEREG32_SZ	sizeof(struct pt_regs32)
#define STACKFRAME32_SZ	sizeof(struct sparc_stackf32)

#endif /* (!__ASSEMBLY__) */

#define UREG_G0        0
#define UREG_G1        1
#define UREG_G2        2
#define UREG_G3        3
#define UREG_G4        4
#define UREG_G5        5
#define UREG_G6        6
#define UREG_G7        7
#define UREG_I0        8
#define UREG_I1        9
#define UREG_I2        10
#define UREG_I3        11
#define UREG_I4        12
#define UREG_I5        13
#define UREG_I6        14
#define UREG_I7        15
#define UREG_FP        UREG_I6
#define UREG_RETPC     UREG_I7

#if defined(__sparc__) && defined(__arch64__)
/* 64 bit sparc */

#ifndef __ASSEMBLY__

#ifdef __KERNEL__

#include <linux/threads.h>

static inline int pt_regs_trap_type(struct pt_regs *regs)
{
	return regs->magic & 0x1ff;
}

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
	return (regs->tstate & TSTATE_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
	return (regs->tstate &= ~TSTATE_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({	flush_user_windows(); \
	get_thread_wsaved() != 0; \
})

#define arch_ptrace_stop(exit_code, info) \
	synchronize_user_stack()

struct global_reg_snapshot {
	unsigned long		tstate;
	unsigned long		tpc;
	unsigned long		tnpc;
	unsigned long		o7;
	unsigned long		i7;
	unsigned long		rpc;
	struct thread_info	*thread;
	unsigned long		pad1;
};
extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];

#define force_successful_syscall_return()	    \
do {	current_thread_info()->syscall_noerror = 1; \
} while (0)
#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
#define instruction_pointer(regs) ((regs)->tpc)
#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
static inline int is_syscall_success(struct pt_regs *regs)
{
	return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
}

static inline long regs_return_value(struct pt_regs *regs)
{
	return regs->u_regs[UREG_I0];
}
#ifdef CONFIG_SMP
extern unsigned long profile_pc(struct pt_regs *);
#else
#define profile_pc(regs) instruction_pointer(regs)
#endif
#endif /* (__KERNEL__) */

#else /* __ASSEMBLY__ */
/* For assembly code. */
#define TRACEREG_SZ		0xa0
#define STACKFRAME_SZ		0xc0

#define TRACEREG32_SZ		0x50
#define STACKFRAME32_SZ		0x60
#endif /* __ASSEMBLY__ */

#else /* (defined(__sparc__) && defined(__arch64__)) */

/* 32 bit sparc */

#ifndef __ASSEMBLY__

#ifdef __KERNEL__

static inline bool pt_regs_is_syscall(struct pt_regs *regs)
{
	return (regs->psr & PSR_SYSCALL);
}

static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
{
	return (regs->psr &= ~PSR_SYSCALL);
}

#define arch_ptrace_stop_needed(exit_code, info) \
({	flush_user_windows(); \
	current_thread_info()->w_saved != 0;	\
})

#define arch_ptrace_stop(exit_code, info) \
	synchronize_user_stack()

#define user_mode(regs) (!((regs)->psr & PSR_PS))
#define instruction_pointer(regs) ((regs)->pc)
#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
unsigned long profile_pc(struct pt_regs *);
#endif /* (__KERNEL__) */

#else /* (!__ASSEMBLY__) */
/* For assembly code. */
#define TRACEREG_SZ       0x50
#define STACKFRAME_SZ     0x60
#endif /* (!__ASSEMBLY__) */

#endif /* (defined(__sparc__) && defined(__arch64__)) */

#ifdef __KERNEL__
#define STACK_BIAS		2047
#endif

/* These are for pt_regs. */
#define PT_V9_G0     0x00
#define PT_V9_G1     0x08
#define PT_V9_G2     0x10
#define PT_V9_G3     0x18
#define PT_V9_G4     0x20
#define PT_V9_G5     0x28
#define PT_V9_G6     0x30
#define PT_V9_G7     0x38
#define PT_V9_I0     0x40
#define PT_V9_I1     0x48
#define PT_V9_I2     0x50
#define PT_V9_I3     0x58
#define PT_V9_I4     0x60
#define PT_V9_I5     0x68
#define PT_V9_I6     0x70
#define PT_V9_FP     PT_V9_I6
#define PT_V9_I7     0x78
#define PT_V9_TSTATE 0x80
#define PT_V9_TPC    0x88
#define PT_V9_TNPC   0x90
#define PT_V9_Y      0x98
#define PT_V9_MAGIC  0x9c
#define PT_TSTATE	PT_V9_TSTATE
#define PT_TPC		PT_V9_TPC
#define PT_TNPC		PT_V9_TNPC

/* These for pt_regs32. */
#define PT_PSR    0x0
#define PT_PC     0x4
#define PT_NPC    0x8
#define PT_Y      0xc
#define PT_G0     0x10
#define PT_WIM    PT_G0
#define PT_G1     0x14
#define PT_G2     0x18
#define PT_G3     0x1c
#define PT_G4     0x20
#define PT_G5     0x24
#define PT_G6     0x28
#define PT_G7     0x2c
#define PT_I0     0x30
#define PT_I1     0x34
#define PT_I2     0x38
#define PT_I3     0x3c
#define PT_I4     0x40
#define PT_I5     0x44
#define PT_I6     0x48
#define PT_FP     PT_I6
#define PT_I7     0x4c

/* Reg_window offsets */
#define RW_V9_L0     0x00
#define RW_V9_L1     0x08
#define RW_V9_L2     0x10
#define RW_V9_L3     0x18
#define RW_V9_L4     0x20
#define RW_V9_L5     0x28
#define RW_V9_L6     0x30
#define RW_V9_L7     0x38
#define RW_V9_I0     0x40
#define RW_V9_I1     0x48
#define RW_V9_I2     0x50
#define RW_V9_I3     0x58
#define RW_V9_I4     0x60
#define RW_V9_I5     0x68
#define RW_V9_I6     0x70
#define RW_V9_I7     0x78

#define RW_L0     0x00
#define RW_L1     0x04
#define RW_L2     0x08
#define RW_L3     0x0c
#define RW_L4     0x10
#define RW_L5     0x14
#define RW_L6     0x18
#define RW_L7     0x1c
#define RW_I0     0x20
#define RW_I1     0x24
#define RW_I2     0x28
#define RW_I3     0x2c
#define RW_I4     0x30
#define RW_I5     0x34
#define RW_I6     0x38
#define RW_I7     0x3c

/* Stack_frame offsets */
#define SF_V9_L0     0x00
#define SF_V9_L1     0x08
#define SF_V9_L2     0x10
#define SF_V9_L3     0x18
#define SF_V9_L4     0x20
#define SF_V9_L5     0x28
#define SF_V9_L6     0x30
#define SF_V9_L7     0x38
#define SF_V9_I0     0x40
#define SF_V9_I1     0x48
#define SF_V9_I2     0x50
#define SF_V9_I3     0x58
#define SF_V9_I4     0x60
#define SF_V9_I5     0x68
#define SF_V9_FP     0x70
#define SF_V9_PC     0x78
#define SF_V9_RETP   0x80
#define SF_V9_XARG0  0x88
#define SF_V9_XARG1  0x90
#define SF_V9_XARG2  0x98
#define SF_V9_XARG3  0xa0
#define SF_V9_XARG4  0xa8
#define SF_V9_XARG5  0xb0
#define SF_V9_XXARG  0xb8

#define SF_L0     0x00
#define SF_L1     0x04
#define SF_L2     0x08
#define SF_L3     0x0c
#define SF_L4     0x10
#define SF_L5     0x14
#define SF_L6     0x18
#define SF_L7     0x1c
#define SF_I0     0x20
#define SF_I1     0x24
#define SF_I2     0x28
#define SF_I3     0x2c
#define SF_I4     0x30
#define SF_I5     0x34
#define SF_FP     0x38
#define SF_PC     0x3c
#define SF_RETP   0x40
#define SF_XARG0  0x44
#define SF_XARG1  0x48
#define SF_XARG2  0x4c
#define SF_XARG3  0x50
#define SF_XARG4  0x54
#define SF_XARG5  0x58
#define SF_XXARG  0x5c

#ifdef __KERNEL__

/* global_reg_snapshot offsets */
#define GR_SNAP_TSTATE	0x00
#define GR_SNAP_TPC	0x08
#define GR_SNAP_TNPC	0x10
#define GR_SNAP_O7	0x18
#define GR_SNAP_I7	0x20
#define GR_SNAP_RPC	0x28
#define GR_SNAP_THREAD	0x30
#define GR_SNAP_PAD1	0x38

#endif  /*  __KERNEL__  */

/* Stuff for the ptrace system call */
#define PTRACE_SPARC_DETACH       11
#define PTRACE_GETREGS            12
#define PTRACE_SETREGS            13
#define PTRACE_GETFPREGS          14
#define PTRACE_SETFPREGS          15
#define PTRACE_READDATA           16
#define PTRACE_WRITEDATA          17
#define PTRACE_READTEXT           18
#define PTRACE_WRITETEXT          19
#define PTRACE_GETFPAREGS         20
#define PTRACE_SETFPAREGS         21

/* There are for debugging 64-bit processes, either from a 32 or 64 bit
 * parent.  Thus their complements are for debugging 32-bit processes only.
 */

#define PTRACE_GETREGS64	  22
#define PTRACE_SETREGS64	  23
/* PTRACE_SYSCALL is 24 */
#define PTRACE_GETFPREGS64	  25
#define PTRACE_SETFPREGS64	  26

#endif /* !(__SPARC_PTRACE_H) */