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1da177e4 LT |
1 | #ifndef __ASM_SH_PTRACE_H |
2 | #define __ASM_SH_PTRACE_H | |
3 | ||
eaaaeef3 PM |
4 | #include <linux/stringify.h> |
5 | ||
1da177e4 LT |
6 | /* |
7 | * Copyright (C) 1999, 2000 Niibe Yutaka | |
8 | * | |
9 | */ | |
f22ab814 | 10 | #if defined(__SH5__) |
33f242ed PM |
11 | struct pt_regs { |
12 | unsigned long long pc; | |
13 | unsigned long long sr; | |
ecd4ca52 | 14 | long long syscall_nr; |
33f242ed PM |
15 | unsigned long long regs[63]; |
16 | unsigned long long tregs[8]; | |
17 | unsigned long long pad[2]; | |
18 | }; | |
eaaaeef3 PM |
19 | |
20 | #define MAX_REG_OFFSET offsetof(struct pt_regs, tregs[7]) | |
21 | #define regs_return_value(regs) ((regs)->regs[3]) | |
22 | ||
23 | #define TREGS_OFFSET_NAME(num) \ | |
24 | {.name = __stringify(tr##num), .offset = offsetof(struct pt_regs, tregs[num])} | |
25 | ||
33f242ed | 26 | #else |
1da177e4 LT |
27 | /* |
28 | * GCC defines register number like this: | |
29 | * ----------------------------- | |
30 | * 0 - 15 are integer registers | |
31 | * 17 - 22 are control/special registers | |
32 | * 24 - 39 fp registers | |
33 | * 40 - 47 xd registers | |
34 | * 48 - fpscr register | |
35 | * ----------------------------- | |
36 | * | |
37 | * We follows above, except: | |
38 | * 16 --- program counter (PC) | |
39 | * 22 --- syscall # | |
40 | * 23 --- floating point communication register | |
41 | */ | |
42 | #define REG_REG0 0 | |
43 | #define REG_REG15 15 | |
44 | ||
45 | #define REG_PC 16 | |
46 | ||
47 | #define REG_PR 17 | |
48 | #define REG_SR 18 | |
33f242ed | 49 | #define REG_GBR 19 |
1da177e4 LT |
50 | #define REG_MACH 20 |
51 | #define REG_MACL 21 | |
52 | ||
53 | #define REG_SYSCALL 22 | |
54 | ||
55 | #define REG_FPREG0 23 | |
56 | #define REG_FPREG15 38 | |
57 | #define REG_XFREG0 39 | |
58 | #define REG_XFREG15 54 | |
59 | ||
60 | #define REG_FPSCR 55 | |
61 | #define REG_FPUL 56 | |
62 | ||
1da177e4 LT |
63 | /* |
64 | * This struct defines the way the registers are stored on the | |
65 | * kernel stack during a system call or other kernel entry. | |
66 | */ | |
67 | struct pt_regs { | |
68 | unsigned long regs[16]; | |
69 | unsigned long pc; | |
70 | unsigned long pr; | |
71 | unsigned long sr; | |
72 | unsigned long gbr; | |
73 | unsigned long mach; | |
74 | unsigned long macl; | |
75 | long tra; | |
76 | }; | |
77 | ||
eaaaeef3 PM |
78 | #define MAX_REG_OFFSET offsetof(struct pt_regs, tra) |
79 | #define regs_return_value(regs) ((regs)->regs[0]) | |
80 | ||
1da177e4 LT |
81 | /* |
82 | * This struct defines the way the DSP registers are stored on the | |
83 | * kernel stack during a system call or other kernel entry. | |
84 | */ | |
85 | struct pt_dspregs { | |
86 | unsigned long a1; | |
87 | unsigned long a0g; | |
88 | unsigned long a1g; | |
89 | unsigned long m0; | |
90 | unsigned long m1; | |
91 | unsigned long a0; | |
92 | unsigned long x0; | |
93 | unsigned long x1; | |
94 | unsigned long y0; | |
95 | unsigned long y1; | |
96 | unsigned long dsr; | |
97 | unsigned long rs; | |
98 | unsigned long re; | |
99 | unsigned long mod; | |
100 | }; | |
dd76279b | 101 | #endif |
1da177e4 | 102 | |
934135c1 PM |
103 | #define PTRACE_GETREGS 12 /* General registers */ |
104 | #define PTRACE_SETREGS 13 | |
105 | ||
106 | #define PTRACE_GETFPREGS 14 /* FPU registers */ | |
107 | #define PTRACE_SETFPREGS 15 | |
108 | ||
3bc24a1a PM |
109 | #define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */ |
110 | ||
111 | #define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */ | |
112 | #define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */ | |
113 | ||
934135c1 | 114 | #define PTRACE_GETDSPREGS 55 /* DSP registers */ |
1da177e4 LT |
115 | #define PTRACE_SETDSPREGS 56 |
116 | ||
b0f3ae03 PM |
117 | #define PT_TEXT_END_ADDR 240 |
118 | #define PT_TEXT_ADDR 244 /* &(struct user)->start_code */ | |
119 | #define PT_DATA_ADDR 248 /* &(struct user)->start_data */ | |
be6514c6 KB |
120 | #define PT_TEXT_LEN 252 |
121 | ||
1da177e4 | 122 | #ifdef __KERNEL__ |
33f242ed | 123 | #include <asm/addrspace.h> |
b0f3ae03 PM |
124 | #include <asm/page.h> |
125 | #include <asm/system.h> | |
33f242ed PM |
126 | |
127 | #define user_mode(regs) (((regs)->sr & 0x40000000)==0) | |
eaaaeef3 PM |
128 | #define user_stack_pointer(regs) ((unsigned long)(regs)->regs[15]) |
129 | #define kernel_stack_pointer(regs) ((unsigned long)(regs)->regs[15]) | |
5a4f7c66 | 130 | #define instruction_pointer(regs) ((unsigned long)(regs)->pc) |
33f242ed | 131 | |
1da177e4 LT |
132 | extern void show_regs(struct pt_regs *); |
133 | ||
eaaaeef3 PM |
134 | #define arch_has_single_step() (1) |
135 | ||
c459dbf2 | 136 | /* |
eaaaeef3 | 137 | * kprobe-based event tracer support |
c459dbf2 | 138 | */ |
eaaaeef3 PM |
139 | #include <linux/stddef.h> |
140 | #include <linux/thread_info.h> | |
c459dbf2 | 141 | |
eaaaeef3 PM |
142 | struct pt_regs_offset { |
143 | const char *name; | |
144 | int offset; | |
145 | }; | |
146 | ||
147 | #define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)} | |
148 | #define REGS_OFFSET_NAME(num) \ | |
149 | {.name = __stringify(r##num), .offset = offsetof(struct pt_regs, regs[num])} | |
150 | #define REG_OFFSET_END {.name = NULL, .offset = 0} | |
151 | ||
152 | /* Query offset/name of register from its name/offset */ | |
153 | extern int regs_query_register_offset(const char *name); | |
154 | extern const char *regs_query_register_name(unsigned int offset); | |
155 | ||
156 | extern const struct pt_regs_offset regoffset_table[]; | |
157 | ||
158 | /** | |
159 | * regs_get_register() - get register value from its offset | |
160 | * @regs: pt_regs from which register value is gotten. | |
161 | * @offset: offset number of the register. | |
162 | * | |
163 | * regs_get_register returns the value of a register. The @offset is the | |
164 | * offset of the register in struct pt_regs address which specified by @regs. | |
165 | * If @offset is bigger than MAX_REG_OFFSET, this returns 0. | |
166 | */ | |
167 | static inline unsigned long regs_get_register(struct pt_regs *regs, | |
168 | unsigned int offset) | |
169 | { | |
170 | if (unlikely(offset > MAX_REG_OFFSET)) | |
171 | return 0; | |
172 | return *(unsigned long *)((unsigned long)regs + offset); | |
173 | } | |
174 | ||
175 | /** | |
176 | * regs_within_kernel_stack() - check the address in the stack | |
177 | * @regs: pt_regs which contains kernel stack pointer. | |
178 | * @addr: address which is checked. | |
179 | * | |
180 | * regs_within_kernel_stack() checks @addr is within the kernel stack page(s). | |
181 | * If @addr is within the kernel stack, it returns true. If not, returns false. | |
182 | */ | |
183 | static inline int regs_within_kernel_stack(struct pt_regs *regs, | |
184 | unsigned long addr) | |
185 | { | |
186 | return ((addr & ~(THREAD_SIZE - 1)) == | |
187 | (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1))); | |
188 | } | |
189 | ||
190 | /** | |
191 | * regs_get_kernel_stack_nth() - get Nth entry of the stack | |
192 | * @regs: pt_regs which contains kernel stack pointer. | |
193 | * @n: stack entry number. | |
194 | * | |
195 | * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which | |
196 | * is specified by @regs. If the @n th entry is NOT in the kernel stack, | |
197 | * this returns 0. | |
198 | */ | |
199 | static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, | |
200 | unsigned int n) | |
201 | { | |
202 | unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs); | |
203 | addr += n; | |
204 | if (regs_within_kernel_stack(regs, (unsigned long)addr)) | |
205 | return *addr; | |
206 | else | |
207 | return 0; | |
208 | } | |
c459dbf2 | 209 | |
34d0b5af PM |
210 | struct perf_event; |
211 | struct perf_sample_data; | |
212 | ||
213 | extern void ptrace_triggered(struct perf_event *bp, int nmi, | |
214 | struct perf_sample_data *data, struct pt_regs *regs); | |
215 | ||
3cf0f4ec | 216 | #define task_pt_regs(task) \ |
4f099ebb | 217 | ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1) |
3cf0f4ec | 218 | |
1da177e4 LT |
219 | static inline unsigned long profile_pc(struct pt_regs *regs) |
220 | { | |
221 | unsigned long pc = instruction_pointer(regs); | |
222 | ||
9edef286 PM |
223 | if (virt_addr_uncached(pc)) |
224 | return CAC_ADDR(pc); | |
33f242ed | 225 | |
1da177e4 LT |
226 | return pc; |
227 | } | |
33f242ed | 228 | #endif /* __KERNEL__ */ |
1da177e4 LT |
229 | |
230 | #endif /* __ASM_SH_PTRACE_H */ |