1 #ifndef __SPARC_PTRACE_H
2 #define __SPARC_PTRACE_H
4 #if defined(__sparc__) && defined(__arch64__)
6 #include <asm/pstate.h>
8 /* This struct defines the way the registers are stored on the
9 * stack during a system call and basically all traps.
12 /* This magic value must have the low 9 bits clear,
13 * as that is where we encode the %tt value, see below.
15 #define PT_REGS_MAGIC 0x57ac6c00
19 #include <linux/types.h>
22 unsigned long u_regs[16]; /* globals and ins */
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
36 * The PT_REGS_MAGIC is chosen such that it can be
37 * loaded completely using just a sethi instruction.
47 unsigned int u_regs[16]; /* globals and ins */
50 /* A V9 register window */
52 unsigned long locals[8];
56 /* A 32-bit register window. */
58 unsigned int locals[8];
62 /* A V9 Sparc stack frame */
64 unsigned long locals[8];
66 struct sparc_stackf *fp;
67 unsigned long callers_pc;
69 unsigned long xargs[6];
70 unsigned long xxargs[1];
73 /* A 32-bit Sparc stack frame */
74 struct sparc_stackf32 {
75 unsigned int locals[8];
78 unsigned int callers_pc;
79 unsigned int structptr;
80 unsigned int xargs[6];
81 unsigned int xxargs[1];
85 unsigned long locals[8];
87 unsigned long _unused;
90 #endif /* (!__ASSEMBLY__) */
96 /* This struct defines the way the registers are stored on the
97 * stack during a system call and basically all traps.
106 unsigned long u_regs[16]; /* globals and ins */
109 /* A 32-bit register window. */
110 struct reg_window32 {
111 unsigned long locals[8];
112 unsigned long ins[8];
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;
122 unsigned long xargs[6];
123 unsigned long xxargs[1];
125 #endif /* (!__ASSEMBLY__) */
127 #endif /* (defined(__sparc__) && defined(__arch64__))*/
131 #define TRACEREG_SZ sizeof(struct pt_regs)
132 #define STACKFRAME_SZ sizeof(struct sparc_stackf)
134 #define TRACEREG32_SZ sizeof(struct pt_regs32)
135 #define STACKFRAME32_SZ sizeof(struct sparc_stackf32)
137 #endif /* (!__ASSEMBLY__) */
155 #define UREG_FP UREG_I6
156 #define UREG_RETPC UREG_I7
158 #if defined(__sparc__) && defined(__arch64__)
165 #include <linux/threads.h>
166 #include <asm/system.h>
168 static inline int pt_regs_trap_type(struct pt_regs *regs)
170 return regs->magic & 0x1ff;
173 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
175 return (regs->tstate & TSTATE_SYSCALL);
178 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
180 return (regs->tstate &= ~TSTATE_SYSCALL);
183 #define arch_ptrace_stop_needed(exit_code, info) \
184 ({ flush_user_windows(); \
185 get_thread_wsaved() != 0; \
188 #define arch_ptrace_stop(exit_code, info) \
189 synchronize_user_stack()
191 struct global_reg_snapshot {
192 unsigned long tstate;
198 struct thread_info *thread;
201 extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
203 #define force_successful_syscall_return() \
204 do { current_thread_info()->syscall_noerror = 1; \
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 static inline int is_syscall_success(struct pt_regs *regs)
212 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
215 static inline long regs_return_value(struct pt_regs *regs)
217 return regs->u_regs[UREG_I0];
220 extern unsigned long profile_pc(struct pt_regs *);
222 #define profile_pc(regs) instruction_pointer(regs)
224 #endif /* (__KERNEL__) */
226 #else /* __ASSEMBLY__ */
227 /* For assembly code. */
228 #define TRACEREG_SZ 0xa0
229 #define STACKFRAME_SZ 0xc0
231 #define TRACEREG32_SZ 0x50
232 #define STACKFRAME32_SZ 0x60
233 #endif /* __ASSEMBLY__ */
235 #else /* (defined(__sparc__) && defined(__arch64__)) */
243 #include <asm/system.h>
245 static inline bool pt_regs_is_syscall(struct pt_regs *regs)
247 return (regs->psr & PSR_SYSCALL);
250 static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
252 return (regs->psr &= ~PSR_SYSCALL);
255 #define arch_ptrace_stop_needed(exit_code, info) \
256 ({ flush_user_windows(); \
257 current_thread_info()->w_saved != 0; \
260 #define arch_ptrace_stop(exit_code, info) \
261 synchronize_user_stack()
263 #define user_mode(regs) (!((regs)->psr & PSR_PS))
264 #define instruction_pointer(regs) ((regs)->pc)
265 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
266 unsigned long profile_pc(struct pt_regs *);
267 #endif /* (__KERNEL__) */
269 #else /* (!__ASSEMBLY__) */
270 /* For assembly code. */
271 #define TRACEREG_SZ 0x50
272 #define STACKFRAME_SZ 0x60
273 #endif /* (!__ASSEMBLY__) */
275 #endif /* (defined(__sparc__) && defined(__arch64__)) */
278 #define STACK_BIAS 2047
281 /* These are for pt_regs. */
282 #define PT_V9_G0 0x00
283 #define PT_V9_G1 0x08
284 #define PT_V9_G2 0x10
285 #define PT_V9_G3 0x18
286 #define PT_V9_G4 0x20
287 #define PT_V9_G5 0x28
288 #define PT_V9_G6 0x30
289 #define PT_V9_G7 0x38
290 #define PT_V9_I0 0x40
291 #define PT_V9_I1 0x48
292 #define PT_V9_I2 0x50
293 #define PT_V9_I3 0x58
294 #define PT_V9_I4 0x60
295 #define PT_V9_I5 0x68
296 #define PT_V9_I6 0x70
297 #define PT_V9_FP PT_V9_I6
298 #define PT_V9_I7 0x78
299 #define PT_V9_TSTATE 0x80
300 #define PT_V9_TPC 0x88
301 #define PT_V9_TNPC 0x90
303 #define PT_V9_MAGIC 0x9c
304 #define PT_TSTATE PT_V9_TSTATE
305 #define PT_TPC PT_V9_TPC
306 #define PT_TNPC PT_V9_TNPC
308 /* These for pt_regs32. */
332 /* Reg_window offsets */
333 #define RW_V9_L0 0x00
334 #define RW_V9_L1 0x08
335 #define RW_V9_L2 0x10
336 #define RW_V9_L3 0x18
337 #define RW_V9_L4 0x20
338 #define RW_V9_L5 0x28
339 #define RW_V9_L6 0x30
340 #define RW_V9_L7 0x38
341 #define RW_V9_I0 0x40
342 #define RW_V9_I1 0x48
343 #define RW_V9_I2 0x50
344 #define RW_V9_I3 0x58
345 #define RW_V9_I4 0x60
346 #define RW_V9_I5 0x68
347 #define RW_V9_I6 0x70
348 #define RW_V9_I7 0x78
367 /* Stack_frame offsets */
368 #define SF_V9_L0 0x00
369 #define SF_V9_L1 0x08
370 #define SF_V9_L2 0x10
371 #define SF_V9_L3 0x18
372 #define SF_V9_L4 0x20
373 #define SF_V9_L5 0x28
374 #define SF_V9_L6 0x30
375 #define SF_V9_L7 0x38
376 #define SF_V9_I0 0x40
377 #define SF_V9_I1 0x48
378 #define SF_V9_I2 0x50
379 #define SF_V9_I3 0x58
380 #define SF_V9_I4 0x60
381 #define SF_V9_I5 0x68
382 #define SF_V9_FP 0x70
383 #define SF_V9_PC 0x78
384 #define SF_V9_RETP 0x80
385 #define SF_V9_XARG0 0x88
386 #define SF_V9_XARG1 0x90
387 #define SF_V9_XARG2 0x98
388 #define SF_V9_XARG3 0xa0
389 #define SF_V9_XARG4 0xa8
390 #define SF_V9_XARG5 0xb0
391 #define SF_V9_XXARG 0xb8
410 #define SF_XARG0 0x44
411 #define SF_XARG1 0x48
412 #define SF_XARG2 0x4c
413 #define SF_XARG3 0x50
414 #define SF_XARG4 0x54
415 #define SF_XARG5 0x58
416 #define SF_XXARG 0x5c
420 /* global_reg_snapshot offsets */
421 #define GR_SNAP_TSTATE 0x00
422 #define GR_SNAP_TPC 0x08
423 #define GR_SNAP_TNPC 0x10
424 #define GR_SNAP_O7 0x18
425 #define GR_SNAP_I7 0x20
426 #define GR_SNAP_RPC 0x28
427 #define GR_SNAP_THREAD 0x30
428 #define GR_SNAP_PAD1 0x38
430 #endif /* __KERNEL__ */
432 /* Stuff for the ptrace system call */
433 #define PTRACE_SPARC_DETACH 11
434 #define PTRACE_GETREGS 12
435 #define PTRACE_SETREGS 13
436 #define PTRACE_GETFPREGS 14
437 #define PTRACE_SETFPREGS 15
438 #define PTRACE_READDATA 16
439 #define PTRACE_WRITEDATA 17
440 #define PTRACE_READTEXT 18
441 #define PTRACE_WRITETEXT 19
442 #define PTRACE_GETFPAREGS 20
443 #define PTRACE_SETFPAREGS 21
445 /* There are for debugging 64-bit processes, either from a 32 or 64 bit
446 * parent. Thus their complements are for debugging 32-bit processes only.
449 #define PTRACE_GETREGS64 22
450 #define PTRACE_SETREGS64 23
451 /* PTRACE_SYSCALL is 24 */
452 #define PTRACE_GETFPREGS64 25
453 #define PTRACE_SETFPREGS64 26
455 #endif /* !(__SPARC_PTRACE_H) */