Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f3ec38d5 SR |
2 | #ifndef __SPARC_PTRACE_H |
3 | #define __SPARC_PTRACE_H | |
4 | ||
54579826 | 5 | #include <uapi/asm/ptrace.h> |
f3ec38d5 SR |
6 | |
7 | #if defined(__sparc__) && defined(__arch64__) | |
f3ec38d5 SR |
8 | #ifndef __ASSEMBLY__ |
9 | ||
d1515582 | 10 | #include <linux/compiler.h> |
f3ec38d5 | 11 | #include <linux/threads.h> |
7f55ba9c | 12 | #include <asm/switch_to.h> |
f3ec38d5 SR |
13 | |
14 | static inline int pt_regs_trap_type(struct pt_regs *regs) | |
15 | { | |
16 | return regs->magic & 0x1ff; | |
17 | } | |
18 | ||
19 | static inline bool pt_regs_is_syscall(struct pt_regs *regs) | |
20 | { | |
21 | return (regs->tstate & TSTATE_SYSCALL); | |
22 | } | |
23 | ||
24 | static inline bool pt_regs_clear_syscall(struct pt_regs *regs) | |
25 | { | |
26 | return (regs->tstate &= ~TSTATE_SYSCALL); | |
27 | } | |
28 | ||
4f627af8 | 29 | #define arch_ptrace_stop_needed() \ |
f3ec38d5 SR |
30 | ({ flush_user_windows(); \ |
31 | get_thread_wsaved() != 0; \ | |
32 | }) | |
33 | ||
4f627af8 | 34 | #define arch_ptrace_stop() \ |
f3ec38d5 SR |
35 | synchronize_user_stack() |
36 | ||
1918c7f5 AV |
37 | #define current_pt_regs() \ |
38 | ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1) | |
39 | ||
f3ec38d5 SR |
40 | struct 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 | }; | |
916ca14a DM |
50 | |
51 | struct global_pmu_snapshot { | |
52 | unsigned long pcr[4]; | |
53 | unsigned long pic[4]; | |
54 | }; | |
55 | ||
56 | union global_cpu_snapshot { | |
57 | struct global_reg_snapshot reg; | |
58 | struct global_pmu_snapshot pmu; | |
59 | }; | |
60 | ||
61 | extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS]; | |
f3ec38d5 | 62 | |
dff933da | 63 | #define force_successful_syscall_return() set_thread_noerror(1) |
f3ec38d5 SR |
64 | #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) |
65 | #define instruction_pointer(regs) ((regs)->tpc) | |
e8f4aa60 AP |
66 | #define instruction_pointer_set(regs, val) do { \ |
67 | (regs)->tpc = (val); \ | |
68 | (regs)->tnpc = (val)+4; \ | |
69 | } while (0) | |
f3ec38d5 | 70 | #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) |
d7e7528b EP |
71 | static inline int is_syscall_success(struct pt_regs *regs) |
72 | { | |
73 | return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)); | |
74 | } | |
75 | ||
76 | static inline long regs_return_value(struct pt_regs *regs) | |
77 | { | |
78 | return regs->u_regs[UREG_I0]; | |
79 | } | |
f3ec38d5 | 80 | #ifdef CONFIG_SMP |
f05a6865 | 81 | unsigned long profile_pc(struct pt_regs *); |
f3ec38d5 SR |
82 | #else |
83 | #define profile_pc(regs) instruction_pointer(regs) | |
1da177e4 | 84 | #endif |
e8f4aa60 AP |
85 | |
86 | #define MAX_REG_OFFSET (offsetof(struct pt_regs, magic)) | |
87 | ||
b7c02b73 DM |
88 | int regs_query_register_offset(const char *name); |
89 | unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); | |
e8f4aa60 AP |
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 | */ | |
101 | static 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. */ | |
112 | static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) | |
113 | { | |
114 | return regs->u_regs[UREG_I6]; | |
115 | } | |
f3ec38d5 | 116 | #else /* __ASSEMBLY__ */ |
f3ec38d5 | 117 | #endif /* __ASSEMBLY__ */ |
f3ec38d5 | 118 | #else /* (defined(__sparc__) && defined(__arch64__)) */ |
f3ec38d5 | 119 | #ifndef __ASSEMBLY__ |
bde4d8b2 | 120 | #include <asm/switch_to.h> |
f3ec38d5 | 121 | |
f3ec38d5 SR |
122 | static inline bool pt_regs_is_syscall(struct pt_regs *regs) |
123 | { | |
124 | return (regs->psr & PSR_SYSCALL); | |
125 | } | |
126 | ||
127 | static inline bool pt_regs_clear_syscall(struct pt_regs *regs) | |
128 | { | |
129 | return (regs->psr &= ~PSR_SYSCALL); | |
130 | } | |
131 | ||
4f627af8 | 132 | #define arch_ptrace_stop_needed() \ |
f3ec38d5 SR |
133 | ({ flush_user_windows(); \ |
134 | current_thread_info()->w_saved != 0; \ | |
135 | }) | |
136 | ||
4f627af8 | 137 | #define arch_ptrace_stop() \ |
f3ec38d5 SR |
138 | synchronize_user_stack() |
139 | ||
ab348681 AV |
140 | #define current_pt_regs() \ |
141 | ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1) | |
142 | ||
f3ec38d5 SR |
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]) | |
146 | unsigned long profile_pc(struct pt_regs *); | |
f3ec38d5 | 147 | #else /* (!__ASSEMBLY__) */ |
f3ec38d5 | 148 | #endif /* (!__ASSEMBLY__) */ |
f3ec38d5 | 149 | #endif /* (defined(__sparc__) && defined(__arch64__)) */ |
f3ec38d5 | 150 | #define STACK_BIAS 2047 |
f3ec38d5 SR |
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 | ||
f3ec38d5 | 162 | #endif /* !(__SPARC_PTRACE_H) */ |