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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
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 *
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
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__) */
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
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)
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
212extern unsigned long profile_pc(struct pt_regs *);
213#else
214#define profile_pc(regs) instruction_pointer(regs)
215#endif
216#endif /* (__KERNEL__) */
217
218#else /* __ASSEMBLY__ */
219/* For assembly code. */
220#define TRACEREG_SZ 0xa0
221#define STACKFRAME_SZ 0xc0
222
223#define TRACEREG32_SZ 0x50
224#define STACKFRAME32_SZ 0x60
225#endif /* __ASSEMBLY__ */
226
227#else /* (defined(__sparc__) && defined(__arch64__)) */
228
229/* 32 bit sparc */
230
231#ifndef __ASSEMBLY__
232
233#ifdef __KERNEL__
234
235#include <asm/system.h>
236
237static inline bool pt_regs_is_syscall(struct pt_regs *regs)
238{
239 return (regs->psr & PSR_SYSCALL);
240}
241
242static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
243{
244 return (regs->psr &= ~PSR_SYSCALL);
245}
246
247#define arch_ptrace_stop_needed(exit_code, info) \
248({ flush_user_windows(); \
249 current_thread_info()->w_saved != 0; \
250})
251
252#define arch_ptrace_stop(exit_code, info) \
253 synchronize_user_stack()
254
255#define user_mode(regs) (!((regs)->psr & PSR_PS))
256#define instruction_pointer(regs) ((regs)->pc)
257#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
258unsigned long profile_pc(struct pt_regs *);
259#endif /* (__KERNEL__) */
260
261#else /* (!__ASSEMBLY__) */
262/* For assembly code. */
263#define TRACEREG_SZ 0x50
264#define STACKFRAME_SZ 0x60
265#endif /* (!__ASSEMBLY__) */
266
267#endif /* (defined(__sparc__) && defined(__arch64__)) */
268
269#ifdef __KERNEL__
270#define STACK_BIAS 2047
271#endif
272
273/* These are for pt_regs. */
274#define PT_V9_G0 0x00
275#define PT_V9_G1 0x08
276#define PT_V9_G2 0x10
277#define PT_V9_G3 0x18
278#define PT_V9_G4 0x20
279#define PT_V9_G5 0x28
280#define PT_V9_G6 0x30
281#define PT_V9_G7 0x38
282#define PT_V9_I0 0x40
283#define PT_V9_I1 0x48
284#define PT_V9_I2 0x50
285#define PT_V9_I3 0x58
286#define PT_V9_I4 0x60
287#define PT_V9_I5 0x68
288#define PT_V9_I6 0x70
289#define PT_V9_FP PT_V9_I6
290#define PT_V9_I7 0x78
291#define PT_V9_TSTATE 0x80
292#define PT_V9_TPC 0x88
293#define PT_V9_TNPC 0x90
294#define PT_V9_Y 0x98
295#define PT_V9_MAGIC 0x9c
296#define PT_TSTATE PT_V9_TSTATE
297#define PT_TPC PT_V9_TPC
298#define PT_TNPC PT_V9_TNPC
299
300/* These for pt_regs32. */
301#define PT_PSR 0x0
302#define PT_PC 0x4
303#define PT_NPC 0x8
304#define PT_Y 0xc
305#define PT_G0 0x10
306#define PT_WIM PT_G0
307#define PT_G1 0x14
308#define PT_G2 0x18
309#define PT_G3 0x1c
310#define PT_G4 0x20
311#define PT_G5 0x24
312#define PT_G6 0x28
313#define PT_G7 0x2c
314#define PT_I0 0x30
315#define PT_I1 0x34
316#define PT_I2 0x38
317#define PT_I3 0x3c
318#define PT_I4 0x40
319#define PT_I5 0x44
320#define PT_I6 0x48
321#define PT_FP PT_I6
322#define PT_I7 0x4c
323
324/* Reg_window offsets */
325#define RW_V9_L0 0x00
326#define RW_V9_L1 0x08
327#define RW_V9_L2 0x10
328#define RW_V9_L3 0x18
329#define RW_V9_L4 0x20
330#define RW_V9_L5 0x28
331#define RW_V9_L6 0x30
332#define RW_V9_L7 0x38
333#define RW_V9_I0 0x40
334#define RW_V9_I1 0x48
335#define RW_V9_I2 0x50
336#define RW_V9_I3 0x58
337#define RW_V9_I4 0x60
338#define RW_V9_I5 0x68
339#define RW_V9_I6 0x70
340#define RW_V9_I7 0x78
341
342#define RW_L0 0x00
343#define RW_L1 0x04
344#define RW_L2 0x08
345#define RW_L3 0x0c
346#define RW_L4 0x10
347#define RW_L5 0x14
348#define RW_L6 0x18
349#define RW_L7 0x1c
350#define RW_I0 0x20
351#define RW_I1 0x24
352#define RW_I2 0x28
353#define RW_I3 0x2c
354#define RW_I4 0x30
355#define RW_I5 0x34
356#define RW_I6 0x38
357#define RW_I7 0x3c
358
359/* Stack_frame offsets */
360#define SF_V9_L0 0x00
361#define SF_V9_L1 0x08
362#define SF_V9_L2 0x10
363#define SF_V9_L3 0x18
364#define SF_V9_L4 0x20
365#define SF_V9_L5 0x28
366#define SF_V9_L6 0x30
367#define SF_V9_L7 0x38
368#define SF_V9_I0 0x40
369#define SF_V9_I1 0x48
370#define SF_V9_I2 0x50
371#define SF_V9_I3 0x58
372#define SF_V9_I4 0x60
373#define SF_V9_I5 0x68
374#define SF_V9_FP 0x70
375#define SF_V9_PC 0x78
376#define SF_V9_RETP 0x80
377#define SF_V9_XARG0 0x88
378#define SF_V9_XARG1 0x90
379#define SF_V9_XARG2 0x98
380#define SF_V9_XARG3 0xa0
381#define SF_V9_XARG4 0xa8
382#define SF_V9_XARG5 0xb0
383#define SF_V9_XXARG 0xb8
384
385#define SF_L0 0x00
386#define SF_L1 0x04
387#define SF_L2 0x08
388#define SF_L3 0x0c
389#define SF_L4 0x10
390#define SF_L5 0x14
391#define SF_L6 0x18
392#define SF_L7 0x1c
393#define SF_I0 0x20
394#define SF_I1 0x24
395#define SF_I2 0x28
396#define SF_I3 0x2c
397#define SF_I4 0x30
398#define SF_I5 0x34
399#define SF_FP 0x38
400#define SF_PC 0x3c
401#define SF_RETP 0x40
402#define SF_XARG0 0x44
403#define SF_XARG1 0x48
404#define SF_XARG2 0x4c
405#define SF_XARG3 0x50
406#define SF_XARG4 0x54
407#define SF_XARG5 0x58
408#define SF_XXARG 0x5c
409
410#ifdef __KERNEL__
411
412/* global_reg_snapshot offsets */
413#define GR_SNAP_TSTATE 0x00
414#define GR_SNAP_TPC 0x08
415#define GR_SNAP_TNPC 0x10
416#define GR_SNAP_O7 0x18
417#define GR_SNAP_I7 0x20
418#define GR_SNAP_RPC 0x28
419#define GR_SNAP_THREAD 0x30
420#define GR_SNAP_PAD1 0x38
421
422#endif /* __KERNEL__ */
423
424/* Stuff for the ptrace system call */
425#define PTRACE_SPARC_DETACH 11
426#define PTRACE_GETREGS 12
427#define PTRACE_SETREGS 13
428#define PTRACE_GETFPREGS 14
429#define PTRACE_SETFPREGS 15
430#define PTRACE_READDATA 16
431#define PTRACE_WRITEDATA 17
432#define PTRACE_READTEXT 18
433#define PTRACE_WRITETEXT 19
434#define PTRACE_GETFPAREGS 20
435#define PTRACE_SETFPAREGS 21
436
437/* There are for debugging 64-bit processes, either from a 32 or 64 bit
438 * parent. Thus their complements are for debugging 32-bit processes only.
439 */
440
441#define PTRACE_GETREGS64 22
442#define PTRACE_SETREGS64 23
443/* PTRACE_SYSCALL is 24 */
444#define PTRACE_GETFPREGS64 25
445#define PTRACE_SETFPREGS64 26
446
447#endif /* !(__SPARC_PTRACE_H) */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __SPARC_PTRACE_H
3#define __SPARC_PTRACE_H
4
5#include <uapi/asm/ptrace.h>
6
7#if defined(__sparc__) && defined(__arch64__)
8#ifndef __ASSEMBLY__
9
10#include <linux/compiler.h>
11#include <linux/threads.h>
12#include <asm/switch_to.h>
13
14static inline int pt_regs_trap_type(struct pt_regs *regs)
15{
16 return regs->magic & 0x1ff;
17}
18
19static inline bool pt_regs_is_syscall(struct pt_regs *regs)
20{
21 return (regs->tstate & TSTATE_SYSCALL);
22}
23
24static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
25{
26 return (regs->tstate &= ~TSTATE_SYSCALL);
27}
28
29#define arch_ptrace_stop_needed(exit_code, info) \
30({ flush_user_windows(); \
31 get_thread_wsaved() != 0; \
32})
33
34#define arch_ptrace_stop(exit_code, info) \
35 synchronize_user_stack()
36
37#define current_pt_regs() \
38 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
39
40struct global_reg_snapshot {
41 unsigned long tstate;
42 unsigned long tpc;
43 unsigned long tnpc;
44 unsigned long o7;
45 unsigned long i7;
46 unsigned long rpc;
47 struct thread_info *thread;
48 unsigned long pad1;
49};
50
51struct global_pmu_snapshot {
52 unsigned long pcr[4];
53 unsigned long pic[4];
54};
55
56union global_cpu_snapshot {
57 struct global_reg_snapshot reg;
58 struct global_pmu_snapshot pmu;
59};
60
61extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
62
63#define force_successful_syscall_return() set_thread_noerror(1)
64#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
65#define instruction_pointer(regs) ((regs)->tpc)
66#define instruction_pointer_set(regs, val) do { \
67 (regs)->tpc = (val); \
68 (regs)->tnpc = (val)+4; \
69 } while (0)
70#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
71static inline int is_syscall_success(struct pt_regs *regs)
72{
73 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
74}
75
76static inline long regs_return_value(struct pt_regs *regs)
77{
78 return regs->u_regs[UREG_I0];
79}
80#ifdef CONFIG_SMP
81unsigned long profile_pc(struct pt_regs *);
82#else
83#define profile_pc(regs) instruction_pointer(regs)
84#endif
85
86#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
87
88int regs_query_register_offset(const char *name);
89unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n);
90
91/**
92 * regs_get_register() - get register value from its offset
93 * @regs: pt_regs from which register value is gotten
94 * @offset: offset number of the register.
95 *
96 * regs_get_register returns the value of a register whose
97 * offset from @regs. The @offset is the offset of the register
98 * in struct pt_regs. If @offset is bigger than MAX_REG_OFFSET,
99 * this returns 0.
100 */
101static inline unsigned long regs_get_register(struct pt_regs *regs,
102 unsigned long offset)
103{
104 if (unlikely(offset >= MAX_REG_OFFSET))
105 return 0;
106 if (offset == PT_V9_Y)
107 return *(unsigned int *)((unsigned long)regs + offset);
108 return *(unsigned long *)((unsigned long)regs + offset);
109}
110
111/* Valid only for Kernel mode traps. */
112static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
113{
114 return regs->u_regs[UREG_I6];
115}
116#else /* __ASSEMBLY__ */
117#endif /* __ASSEMBLY__ */
118#else /* (defined(__sparc__) && defined(__arch64__)) */
119#ifndef __ASSEMBLY__
120#include <asm/switch_to.h>
121
122static inline bool pt_regs_is_syscall(struct pt_regs *regs)
123{
124 return (regs->psr & PSR_SYSCALL);
125}
126
127static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
128{
129 return (regs->psr &= ~PSR_SYSCALL);
130}
131
132#define arch_ptrace_stop_needed(exit_code, info) \
133({ flush_user_windows(); \
134 current_thread_info()->w_saved != 0; \
135})
136
137#define arch_ptrace_stop(exit_code, info) \
138 synchronize_user_stack()
139
140#define current_pt_regs() \
141 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
142
143#define user_mode(regs) (!((regs)->psr & PSR_PS))
144#define instruction_pointer(regs) ((regs)->pc)
145#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
146unsigned long profile_pc(struct pt_regs *);
147#else /* (!__ASSEMBLY__) */
148#endif /* (!__ASSEMBLY__) */
149#endif /* (defined(__sparc__) && defined(__arch64__)) */
150#define STACK_BIAS 2047
151
152/* global_reg_snapshot offsets */
153#define GR_SNAP_TSTATE 0x00
154#define GR_SNAP_TPC 0x08
155#define GR_SNAP_TNPC 0x10
156#define GR_SNAP_O7 0x18
157#define GR_SNAP_I7 0x20
158#define GR_SNAP_RPC 0x28
159#define GR_SNAP_THREAD 0x30
160#define GR_SNAP_PAD1 0x38
161
162#endif /* !(__SPARC_PTRACE_H) */