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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 #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 
170 static inline int pt_regs_trap_type(struct pt_regs *regs)
171 {
172         return regs->magic & 0x1ff;
173 }
174 
175 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
176 {
177         return (regs->tstate & TSTATE_SYSCALL);
178 }
179 
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])
212 static inline int is_syscall_success(struct pt_regs *regs)
213 {
214         return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
215 }
216 
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 
246 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
247 {
248         return (regs->psr & PSR_SYSCALL);
249 }
250 
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 

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