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Sam Ravnborgf3ec38d2009-01-02 19:42:12 -08001#ifndef __SPARC_PTRACE_H
2#define __SPARC_PTRACE_H
3
Sam Ravnborga439fe52008-07-27 23:00:59 +02004#if defined(__sparc__) && defined(__arch64__)
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -08005/* 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
21struct 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 *
Lucas De Marchi25985ed2011-03-30 22:57:33 -030036 * The PT_REGS_MAGIC is chosen such that it can be
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -080037 * loaded completely using just a sethi instruction.
38 */
39 unsigned int magic;
40};
41
42struct 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 */
51struct reg_window {
52 unsigned long locals[8];
53 unsigned long ins[8];
54};
55
56/* A 32-bit register window. */
57struct reg_window32 {
58 unsigned int locals[8];
59 unsigned int ins[8];
60};
61
62/* A V9 Sparc stack frame */
63struct 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 */
74struct 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
84struct 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__) */
Sam Ravnborga439fe52008-07-27 23:00:59 +020091#else
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -080092/* 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
101struct 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. */
110struct reg_window32 {
111 unsigned long locals[8];
112 unsigned long ins[8];
113};
114
115/* A Sparc stack frame */
116struct 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
168static inline int pt_regs_trap_type(struct pt_regs *regs)
169{
170 return regs->magic & 0x1ff;
171}
172
173static inline bool pt_regs_is_syscall(struct pt_regs *regs)
174{
175 return (regs->tstate & TSTATE_SYSCALL);
176}
177
178static 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
191struct 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};
201extern struct global_reg_snapshot global_reg_snapshot[NR_CPUS];
202
203#define force_successful_syscall_return() \
204do { 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)
Jason Wessel33d88812011-07-19 15:43:16 -0500208#define instruction_pointer_set(regs, val) ((regs)->tpc = (val))
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800209#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
212extern unsigned long profile_pc(struct pt_regs *);
213#else
214#define profile_pc(regs) instruction_pointer(regs)
Sam Ravnborga439fe52008-07-27 23:00:59 +0200215#endif
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800216extern 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
238static inline bool pt_regs_is_syscall(struct pt_regs *regs)
239{
240 return (regs->psr & PSR_SYSCALL);
241}
242
243static 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])
259unsigned long profile_pc(struct pt_regs *);
260extern 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
Sam Ravnborga439fe52008-07-27 23:00:59 +0200273#endif
Sam Ravnborgf3ec38d2009-01-02 19:42:12 -0800274
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) */