1 #ifndef __SPARC_PTRACE_H
2 #define __SPARC_PTRACE_H
3
4 #if defined(__sparc__) && defined(__arch64__)
5 /* 64 bit sparc */
6 #include <asm/pstate.h>
7
8 /* This struct defines the way the registers are stored on the
9 * stack during a system call and basically all traps.
10 */
11
12 /* This magic value must have the low 9 bits clear,
13 * as that is where we encode the %tt value, see below.
14 */
15 #define PT_REGS_MAGIC 0x57ac6c00
16
17 #ifndef __ASSEMBLY__
18
19 #include <linux/types.h>
20
21 struct pt_regs {
22 unsigned long u_regs[16]; /* globals and ins */
23 unsigned long tstate;
24 unsigned long tpc;
25 unsigned long tnpc;
26 unsigned int y;
27
28 /* We encode a magic number, PT_REGS_MAGIC, along
29 * with the %tt (trap type) register value at trap
30 * entry time. The magic number allows us to identify
31 * accurately a trap stack frame in the stack
32 * unwinder, and the %tt value allows us to test
33 * things like "in a system call" etc. for an arbitray
34 * process.
35 *
36 * The PT_REGS_MAGIC is chosen such that it can be
37 * loaded completely using just a sethi instruction.
38 */
39 unsigned int magic;
40 };
41
42 struct pt_regs32 {
43 unsigned int psr;
44 unsigned int pc;
45 unsigned int npc;
46 unsigned int y;
47 unsigned int u_regs[16]; /* globals and ins */
48 };
49
50 /* A V9 register window */
51 struct reg_window {
52 unsigned long locals[8];
53 unsigned long ins[8];
54 };
55
56 /* A 32-bit register window. */
57 struct reg_window32 {
58 unsigned int locals[8];
59 unsigned int ins[8];
60 };
61
62 /* A V9 Sparc stack frame */
63 struct sparc_stackf {
64 unsigned long locals[8];
65 unsigned long ins[6];
66 struct sparc_stackf *fp;
67 unsigned long callers_pc;
68 char *structptr;
69 unsigned long xargs[6];
70 unsigned long xxargs[1];
71 };
72
73 /* A 32-bit Sparc stack frame */
74 struct sparc_stackf32 {
75 unsigned int locals[8];
76 unsigned int ins[6];
77 unsigned int fp;
78 unsigned int callers_pc;
79 unsigned int structptr;
80 unsigned int xargs[6];
81 unsigned int xxargs[1];
82 };
83
84 struct sparc_trapf {
85 unsigned long locals[8];
86 unsigned long ins[8];
87 unsigned long _unused;
88 struct pt_regs *regs;
89 };
90 #endif /* (!__ASSEMBLY__) */
91 #else
92 /* 32 bit sparc */
93
94 #include <asm/psr.h>
95
96 /* This struct defines the way the registers are stored on the
97 * stack during a system call and basically all traps.
98 */
99 #ifndef __ASSEMBLY__
100
101 #include <linux/types.h>
102
103 struct pt_regs {
104 unsigned long psr;
105 unsigned long pc;
106 unsigned long npc;
107 unsigned long y;
108 unsigned long u_regs[16]; /* globals and ins */
109 };
110
111 /* A 32-bit register window. */
112 struct reg_window32 {
113 unsigned long locals[8];
114 unsigned long ins[8];
115 };
116
117 /* A Sparc stack frame */
118 struct sparc_stackf {
119 unsigned long locals[8];
120 unsigned long ins[6];
121 struct sparc_stackf *fp;
122 unsigned long callers_pc;
123 char *structptr;
124 unsigned long xargs[6];
125 unsigned long xxargs[1];
126 };
127 #endif /* (!__ASSEMBLY__) */
128
129 #endif /* (defined(__sparc__) && defined(__arch64__))*/
130
131 #ifndef __ASSEMBLY__
132
133 #define TRACEREG_SZ sizeof(struct pt_regs)
134 #define STACKFRAME_SZ sizeof(struct sparc_stackf)
135
136 #define TRACEREG32_SZ sizeof(struct pt_regs32)
137 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
138
139 #endif /* (!__ASSEMBLY__) */
140
141 #define UREG_G0 0
142 #define UREG_G1 1
143 #define UREG_G2 2
144 #define UREG_G3 3
145 #define UREG_G4 4
146 #define UREG_G5 5
147 #define UREG_G6 6
148 #define UREG_G7 7
149 #define UREG_I0 8
150 #define UREG_I1 9
151 #define UREG_I2 10
152 #define UREG_I3 11
153 #define UREG_I4 12
154 #define UREG_I5 13
155 #define UREG_I6 14
156 #define UREG_I7 15
157 #define UREG_FP UREG_I6
158 #define UREG_RETPC UREG_I7
159
160 #if defined(__sparc__) && defined(__arch64__)
161 /* 64 bit sparc */
162
163 #ifndef __ASSEMBLY__
164
165 #ifdef __KERNEL__
166
167 #include <linux/threads.h>
168 #include <asm/switch_to.h>
169
pt_regs_trap_type(struct pt_regs * regs)170 static inline int pt_regs_trap_type(struct pt_regs *regs)
171 {
172 return regs->magic & 0x1ff;
173 }
174
pt_regs_is_syscall(struct pt_regs * regs)175 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
176 {
177 return (regs->tstate & TSTATE_SYSCALL);
178 }
179
pt_regs_clear_syscall(struct pt_regs * regs)180 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
181 {
182 return (regs->tstate &= ~TSTATE_SYSCALL);
183 }
184
185 #define arch_ptrace_stop_needed(exit_code, info) \
186 ({ flush_user_windows(); \
187 get_thread_wsaved() != 0; \
188 })
189
190 #define arch_ptrace_stop(exit_code, info) \
191 synchronize_user_stack()
192
193 struct global_reg_snapshot {
194 unsigned long tstate;
195 unsigned long tpc;
196 unsigned long tnpc;
197 unsigned long o7;
198 unsigned long i7;
199 unsigned long rpc;
200 struct thread_info *thread;
201 unsigned long pad1;
202 };
203 extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
204
205 #define force_successful_syscall_return() \
206 do { current_thread_info()->syscall_noerror = 1; \
207 } while (0)
208 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
209 #define instruction_pointer(regs) ((regs)->tpc)
210 #define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
211 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
is_syscall_success(struct pt_regs * regs)212 static inline int is_syscall_success(struct pt_regs *regs)
213 {
214 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
215 }
216
regs_return_value(struct pt_regs * regs)217 static inline long regs_return_value(struct pt_regs *regs)
218 {
219 return regs->u_regs[UREG_I0];
220 }
221 #ifdef CONFIG_SMP
222 extern unsigned long profile_pc(struct pt_regs *);
223 #else
224 #define profile_pc(regs) instruction_pointer(regs)
225 #endif
226 #endif /* (__KERNEL__) */
227
228 #else /* __ASSEMBLY__ */
229 /* For assembly code. */
230 #define TRACEREG_SZ 0xa0
231 #define STACKFRAME_SZ 0xc0
232
233 #define TRACEREG32_SZ 0x50
234 #define STACKFRAME32_SZ 0x60
235 #endif /* __ASSEMBLY__ */
236
237 #else /* (defined(__sparc__) && defined(__arch64__)) */
238
239 /* 32 bit sparc */
240
241 #ifndef __ASSEMBLY__
242
243 #ifdef __KERNEL__
244 #include <asm/switch_to.h>
245
pt_regs_is_syscall(struct pt_regs * regs)246 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
247 {
248 return (regs->psr & PSR_SYSCALL);
249 }
250
pt_regs_clear_syscall(struct pt_regs * regs)251 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
252 {
253 return (regs->psr &= ~PSR_SYSCALL);
254 }
255
256 #define arch_ptrace_stop_needed(exit_code, info) \
257 ({ flush_user_windows(); \
258 current_thread_info()->w_saved != 0; \
259 })
260
261 #define arch_ptrace_stop(exit_code, info) \
262 synchronize_user_stack()
263
264 #define user_mode(regs) (!((regs)->psr & PSR_PS))
265 #define instruction_pointer(regs) ((regs)->pc)
266 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
267 unsigned long profile_pc(struct pt_regs *);
268 #endif /* (__KERNEL__) */
269
270 #else /* (!__ASSEMBLY__) */
271 /* For assembly code. */
272 #define TRACEREG_SZ 0x50
273 #define STACKFRAME_SZ 0x60
274 #endif /* (!__ASSEMBLY__) */
275
276 #endif /* (defined(__sparc__) && defined(__arch64__)) */
277
278 #ifdef __KERNEL__
279 #define STACK_BIAS 2047
280 #endif
281
282 /* These are for pt_regs. */
283 #define PT_V9_G0 0x00
284 #define PT_V9_G1 0x08
285 #define PT_V9_G2 0x10
286 #define PT_V9_G3 0x18
287 #define PT_V9_G4 0x20
288 #define PT_V9_G5 0x28
289 #define PT_V9_G6 0x30
290 #define PT_V9_G7 0x38
291 #define PT_V9_I0 0x40
292 #define PT_V9_I1 0x48
293 #define PT_V9_I2 0x50
294 #define PT_V9_I3 0x58
295 #define PT_V9_I4 0x60
296 #define PT_V9_I5 0x68
297 #define PT_V9_I6 0x70
298 #define PT_V9_FP PT_V9_I6
299 #define PT_V9_I7 0x78
300 #define PT_V9_TSTATE 0x80
301 #define PT_V9_TPC 0x88
302 #define PT_V9_TNPC 0x90
303 #define PT_V9_Y 0x98
304 #define PT_V9_MAGIC 0x9c
305 #define PT_TSTATE PT_V9_TSTATE
306 #define PT_TPC PT_V9_TPC
307 #define PT_TNPC PT_V9_TNPC
308
309 /* These for pt_regs32. */
310 #define PT_PSR 0x0
311 #define PT_PC 0x4
312 #define PT_NPC 0x8
313 #define PT_Y 0xc
314 #define PT_G0 0x10
315 #define PT_WIM PT_G0
316 #define PT_G1 0x14
317 #define PT_G2 0x18
318 #define PT_G3 0x1c
319 #define PT_G4 0x20
320 #define PT_G5 0x24
321 #define PT_G6 0x28
322 #define PT_G7 0x2c
323 #define PT_I0 0x30
324 #define PT_I1 0x34
325 #define PT_I2 0x38
326 #define PT_I3 0x3c
327 #define PT_I4 0x40
328 #define PT_I5 0x44
329 #define PT_I6 0x48
330 #define PT_FP PT_I6
331 #define PT_I7 0x4c
332
333 /* Reg_window offsets */
334 #define RW_V9_L0 0x00
335 #define RW_V9_L1 0x08
336 #define RW_V9_L2 0x10
337 #define RW_V9_L3 0x18
338 #define RW_V9_L4 0x20
339 #define RW_V9_L5 0x28
340 #define RW_V9_L6 0x30
341 #define RW_V9_L7 0x38
342 #define RW_V9_I0 0x40
343 #define RW_V9_I1 0x48
344 #define RW_V9_I2 0x50
345 #define RW_V9_I3 0x58
346 #define RW_V9_I4 0x60
347 #define RW_V9_I5 0x68
348 #define RW_V9_I6 0x70
349 #define RW_V9_I7 0x78
350
351 #define RW_L0 0x00
352 #define RW_L1 0x04
353 #define RW_L2 0x08
354 #define RW_L3 0x0c
355 #define RW_L4 0x10
356 #define RW_L5 0x14
357 #define RW_L6 0x18
358 #define RW_L7 0x1c
359 #define RW_I0 0x20
360 #define RW_I1 0x24
361 #define RW_I2 0x28
362 #define RW_I3 0x2c
363 #define RW_I4 0x30
364 #define RW_I5 0x34
365 #define RW_I6 0x38
366 #define RW_I7 0x3c
367
368 /* Stack_frame offsets */
369 #define SF_V9_L0 0x00
370 #define SF_V9_L1 0x08
371 #define SF_V9_L2 0x10
372 #define SF_V9_L3 0x18
373 #define SF_V9_L4 0x20
374 #define SF_V9_L5 0x28
375 #define SF_V9_L6 0x30
376 #define SF_V9_L7 0x38
377 #define SF_V9_I0 0x40
378 #define SF_V9_I1 0x48
379 #define SF_V9_I2 0x50
380 #define SF_V9_I3 0x58
381 #define SF_V9_I4 0x60
382 #define SF_V9_I5 0x68
383 #define SF_V9_FP 0x70
384 #define SF_V9_PC 0x78
385 #define SF_V9_RETP 0x80
386 #define SF_V9_XARG0 0x88
387 #define SF_V9_XARG1 0x90
388 #define SF_V9_XARG2 0x98
389 #define SF_V9_XARG3 0xa0
390 #define SF_V9_XARG4 0xa8
391 #define SF_V9_XARG5 0xb0
392 #define SF_V9_XXARG 0xb8
393
394 #define SF_L0 0x00
395 #define SF_L1 0x04
396 #define SF_L2 0x08
397 #define SF_L3 0x0c
398 #define SF_L4 0x10
399 #define SF_L5 0x14
400 #define SF_L6 0x18
401 #define SF_L7 0x1c
402 #define SF_I0 0x20
403 #define SF_I1 0x24
404 #define SF_I2 0x28
405 #define SF_I3 0x2c
406 #define SF_I4 0x30
407 #define SF_I5 0x34
408 #define SF_FP 0x38
409 #define SF_PC 0x3c
410 #define SF_RETP 0x40
411 #define SF_XARG0 0x44
412 #define SF_XARG1 0x48
413 #define SF_XARG2 0x4c
414 #define SF_XARG3 0x50
415 #define SF_XARG4 0x54
416 #define SF_XARG5 0x58
417 #define SF_XXARG 0x5c
418
419 #ifdef __KERNEL__
420
421 /* global_reg_snapshot offsets */
422 #define GR_SNAP_TSTATE 0x00
423 #define GR_SNAP_TPC 0x08
424 #define GR_SNAP_TNPC 0x10
425 #define GR_SNAP_O7 0x18
426 #define GR_SNAP_I7 0x20
427 #define GR_SNAP_RPC 0x28
428 #define GR_SNAP_THREAD 0x30
429 #define GR_SNAP_PAD1 0x38
430
431 #endif /* __KERNEL__ */
432
433 /* Stuff for the ptrace system call */
434 #define PTRACE_SPARC_DETACH 11
435 #define PTRACE_GETREGS 12
436 #define PTRACE_SETREGS 13
437 #define PTRACE_GETFPREGS 14
438 #define PTRACE_SETFPREGS 15
439 #define PTRACE_READDATA 16
440 #define PTRACE_WRITEDATA 17
441 #define PTRACE_READTEXT 18
442 #define PTRACE_WRITETEXT 19
443 #define PTRACE_GETFPAREGS 20
444 #define PTRACE_SETFPAREGS 21
445
446 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
447 * parent. Thus their complements are for debugging 32-bit processes only.
448 */
449
450 #define PTRACE_GETREGS64 22
451 #define PTRACE_SETREGS64 23
452 /* PTRACE_SYSCALL is 24 */
453 #define PTRACE_GETFPREGS64 25
454 #define PTRACE_SETFPREGS64 26
455
456 #endif /* !(__SPARC_PTRACE_H) */
457