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Linux/arch/sparc/include/asm/ptrace.h

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

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