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1da177e4 LT |
1 | #ifndef __ASM_SH_PTRACE_H |
2 | #define __ASM_SH_PTRACE_H | |
3 | ||
1da177e4 LT |
4 | /* |
5 | * Copyright (C) 1999, 2000 Niibe Yutaka | |
1da177e4 | 6 | */ |
1da177e4 | 7 | |
934135c1 PM |
8 | #define PTRACE_GETREGS 12 /* General registers */ |
9 | #define PTRACE_SETREGS 13 | |
10 | ||
11 | #define PTRACE_GETFPREGS 14 /* FPU registers */ | |
12 | #define PTRACE_SETFPREGS 15 | |
13 | ||
3bc24a1a PM |
14 | #define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */ |
15 | ||
16 | #define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */ | |
17 | #define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */ | |
18 | ||
934135c1 | 19 | #define PTRACE_GETDSPREGS 55 /* DSP registers */ |
1da177e4 LT |
20 | #define PTRACE_SETDSPREGS 56 |
21 | ||
b0f3ae03 PM |
22 | #define PT_TEXT_END_ADDR 240 |
23 | #define PT_TEXT_ADDR 244 /* &(struct user)->start_code */ | |
24 | #define PT_DATA_ADDR 248 /* &(struct user)->start_data */ | |
be6514c6 KB |
25 | #define PT_TEXT_LEN 252 |
26 | ||
da28c597 PM |
27 | #if defined(__SH5__) || defined(CONFIG_CPU_SH5) |
28 | #include "ptrace_64.h" | |
29 | #else | |
30 | #include "ptrace_32.h" | |
31 | #endif | |
32 | ||
1da177e4 | 33 | #ifdef __KERNEL__ |
da28c597 PM |
34 | |
35 | #include <linux/stringify.h> | |
36 | #include <linux/stddef.h> | |
37 | #include <linux/thread_info.h> | |
33f242ed | 38 | #include <asm/addrspace.h> |
b0f3ae03 PM |
39 | #include <asm/page.h> |
40 | #include <asm/system.h> | |
33f242ed PM |
41 | |
42 | #define user_mode(regs) (((regs)->sr & 0x40000000)==0) | |
eac676e5 | 43 | #define kernel_stack_pointer(_regs) ((unsigned long)(_regs)->regs[15]) |
3cea45c6 | 44 | #define GET_USP(regs) ((regs)->regs[15]) |
33f242ed | 45 | |
1da177e4 LT |
46 | extern void show_regs(struct pt_regs *); |
47 | ||
eaaaeef3 PM |
48 | #define arch_has_single_step() (1) |
49 | ||
c459dbf2 | 50 | /* |
eaaaeef3 | 51 | * kprobe-based event tracer support |
c459dbf2 | 52 | */ |
eaaaeef3 PM |
53 | struct pt_regs_offset { |
54 | const char *name; | |
55 | int offset; | |
56 | }; | |
57 | ||
58 | #define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)} | |
59 | #define REGS_OFFSET_NAME(num) \ | |
60 | {.name = __stringify(r##num), .offset = offsetof(struct pt_regs, regs[num])} | |
da28c597 PM |
61 | #define TREGS_OFFSET_NAME(num) \ |
62 | {.name = __stringify(tr##num), .offset = offsetof(struct pt_regs, tregs[num])} | |
eaaaeef3 PM |
63 | #define REG_OFFSET_END {.name = NULL, .offset = 0} |
64 | ||
65 | /* Query offset/name of register from its name/offset */ | |
66 | extern int regs_query_register_offset(const char *name); | |
67 | extern const char *regs_query_register_name(unsigned int offset); | |
68 | ||
69 | extern const struct pt_regs_offset regoffset_table[]; | |
70 | ||
71 | /** | |
72 | * regs_get_register() - get register value from its offset | |
73 | * @regs: pt_regs from which register value is gotten. | |
74 | * @offset: offset number of the register. | |
75 | * | |
76 | * regs_get_register returns the value of a register. The @offset is the | |
77 | * offset of the register in struct pt_regs address which specified by @regs. | |
78 | * If @offset is bigger than MAX_REG_OFFSET, this returns 0. | |
79 | */ | |
80 | static inline unsigned long regs_get_register(struct pt_regs *regs, | |
81 | unsigned int offset) | |
82 | { | |
83 | if (unlikely(offset > MAX_REG_OFFSET)) | |
84 | return 0; | |
85 | return *(unsigned long *)((unsigned long)regs + offset); | |
86 | } | |
87 | ||
88 | /** | |
89 | * regs_within_kernel_stack() - check the address in the stack | |
90 | * @regs: pt_regs which contains kernel stack pointer. | |
91 | * @addr: address which is checked. | |
92 | * | |
93 | * regs_within_kernel_stack() checks @addr is within the kernel stack page(s). | |
94 | * If @addr is within the kernel stack, it returns true. If not, returns false. | |
95 | */ | |
96 | static inline int regs_within_kernel_stack(struct pt_regs *regs, | |
97 | unsigned long addr) | |
98 | { | |
99 | return ((addr & ~(THREAD_SIZE - 1)) == | |
100 | (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1))); | |
101 | } | |
102 | ||
103 | /** | |
104 | * regs_get_kernel_stack_nth() - get Nth entry of the stack | |
105 | * @regs: pt_regs which contains kernel stack pointer. | |
106 | * @n: stack entry number. | |
107 | * | |
108 | * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which | |
109 | * is specified by @regs. If the @n th entry is NOT in the kernel stack, | |
110 | * this returns 0. | |
111 | */ | |
112 | static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, | |
113 | unsigned int n) | |
114 | { | |
115 | unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs); | |
116 | addr += n; | |
117 | if (regs_within_kernel_stack(regs, (unsigned long)addr)) | |
118 | return *addr; | |
119 | else | |
120 | return 0; | |
121 | } | |
c459dbf2 | 122 | |
34d0b5af PM |
123 | struct perf_event; |
124 | struct perf_sample_data; | |
125 | ||
126 | extern void ptrace_triggered(struct perf_event *bp, int nmi, | |
127 | struct perf_sample_data *data, struct pt_regs *regs); | |
128 | ||
3cf0f4ec | 129 | #define task_pt_regs(task) \ |
4f099ebb | 130 | ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1) |
3cf0f4ec | 131 | |
1da177e4 LT |
132 | static inline unsigned long profile_pc(struct pt_regs *regs) |
133 | { | |
134 | unsigned long pc = instruction_pointer(regs); | |
135 | ||
9edef286 PM |
136 | if (virt_addr_uncached(pc)) |
137 | return CAC_ADDR(pc); | |
33f242ed | 138 | |
1da177e4 LT |
139 | return pc; |
140 | } | |
3cea45c6 MF |
141 | #define profile_pc profile_pc |
142 | ||
143 | #include <asm-generic/ptrace.h> | |
33f242ed | 144 | #endif /* __KERNEL__ */ |
1da177e4 LT |
145 | |
146 | #endif /* __ASM_SH_PTRACE_H */ |