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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() \
30({ flush_user_windows(); \
31 get_thread_wsaved() != 0; \
32})
33
34#define arch_ptrace_stop() \
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() \
133({ flush_user_windows(); \
134 current_thread_info()->w_saved != 0; \
135})
136
137#define arch_ptrace_stop() \
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) */
1#ifndef __SPARC_PTRACE_H
2#define __SPARC_PTRACE_H
3
4#include <uapi/asm/ptrace.h>
5
6#if defined(__sparc__) && defined(__arch64__)
7#ifndef __ASSEMBLY__
8
9#include <linux/threads.h>
10#include <asm/switch_to.h>
11
12static inline int pt_regs_trap_type(struct pt_regs *regs)
13{
14 return regs->magic & 0x1ff;
15}
16
17static inline bool pt_regs_is_syscall(struct pt_regs *regs)
18{
19 return (regs->tstate & TSTATE_SYSCALL);
20}
21
22static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
23{
24 return (regs->tstate &= ~TSTATE_SYSCALL);
25}
26
27#define arch_ptrace_stop_needed(exit_code, info) \
28({ flush_user_windows(); \
29 get_thread_wsaved() != 0; \
30})
31
32#define arch_ptrace_stop(exit_code, info) \
33 synchronize_user_stack()
34
35#define current_pt_regs() \
36 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
37
38struct global_reg_snapshot {
39 unsigned long tstate;
40 unsigned long tpc;
41 unsigned long tnpc;
42 unsigned long o7;
43 unsigned long i7;
44 unsigned long rpc;
45 struct thread_info *thread;
46 unsigned long pad1;
47};
48
49struct global_pmu_snapshot {
50 unsigned long pcr[4];
51 unsigned long pic[4];
52};
53
54union global_cpu_snapshot {
55 struct global_reg_snapshot reg;
56 struct global_pmu_snapshot pmu;
57};
58
59extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS];
60
61#define force_successful_syscall_return() set_thread_noerror(1)
62#define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV))
63#define instruction_pointer(regs) ((regs)->tpc)
64#define instruction_pointer_set(regs, val) do { \
65 (regs)->tpc = (val); \
66 (regs)->tnpc = (val)+4; \
67 } while (0)
68#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
69static inline int is_syscall_success(struct pt_regs *regs)
70{
71 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY));
72}
73
74static inline long regs_return_value(struct pt_regs *regs)
75{
76 return regs->u_regs[UREG_I0];
77}
78#ifdef CONFIG_SMP
79unsigned long profile_pc(struct pt_regs *);
80#else
81#define profile_pc(regs) instruction_pointer(regs)
82#endif
83
84#define MAX_REG_OFFSET (offsetof(struct pt_regs, magic))
85
86extern int regs_query_register_offset(const char *name);
87
88/**
89 * regs_get_register() - get register value from its offset
90 * @regs: pt_regs from which register value is gotten
91 * @offset: offset number of the register.
92 *
93 * regs_get_register returns the value of a register whose
94 * offset from @regs. The @offset is the offset of the register
95 * in struct pt_regs. If @offset is bigger than MAX_REG_OFFSET,
96 * this returns 0.
97 */
98static inline unsigned long regs_get_register(struct pt_regs *regs,
99 unsigned long offset)
100{
101 if (unlikely(offset >= MAX_REG_OFFSET))
102 return 0;
103 if (offset == PT_V9_Y)
104 return *(unsigned int *)((unsigned long)regs + offset);
105 return *(unsigned long *)((unsigned long)regs + offset);
106}
107
108/* Valid only for Kernel mode traps. */
109static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
110{
111 return regs->u_regs[UREG_I6];
112}
113#else /* __ASSEMBLY__ */
114#endif /* __ASSEMBLY__ */
115#else /* (defined(__sparc__) && defined(__arch64__)) */
116#ifndef __ASSEMBLY__
117#include <asm/switch_to.h>
118
119static inline bool pt_regs_is_syscall(struct pt_regs *regs)
120{
121 return (regs->psr & PSR_SYSCALL);
122}
123
124static inline bool pt_regs_clear_syscall(struct pt_regs *regs)
125{
126 return (regs->psr &= ~PSR_SYSCALL);
127}
128
129#define arch_ptrace_stop_needed(exit_code, info) \
130({ flush_user_windows(); \
131 current_thread_info()->w_saved != 0; \
132})
133
134#define arch_ptrace_stop(exit_code, info) \
135 synchronize_user_stack()
136
137#define current_pt_regs() \
138 ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
139
140#define user_mode(regs) (!((regs)->psr & PSR_PS))
141#define instruction_pointer(regs) ((regs)->pc)
142#define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP])
143unsigned long profile_pc(struct pt_regs *);
144#else /* (!__ASSEMBLY__) */
145#endif /* (!__ASSEMBLY__) */
146#endif /* (defined(__sparc__) && defined(__arch64__)) */
147#define STACK_BIAS 2047
148
149/* global_reg_snapshot offsets */
150#define GR_SNAP_TSTATE 0x00
151#define GR_SNAP_TPC 0x08
152#define GR_SNAP_TNPC 0x10
153#define GR_SNAP_O7 0x18
154#define GR_SNAP_I7 0x20
155#define GR_SNAP_RPC 0x28
156#define GR_SNAP_THREAD 0x30
157#define GR_SNAP_PAD1 0x38
158
159#endif /* !(__SPARC_PTRACE_H) */