1
2
3
4#ifndef __ASM_SH_PTRACE_H
5#define __ASM_SH_PTRACE_H
6
7
8#include <linux/stringify.h>
9#include <linux/stddef.h>
10#include <linux/thread_info.h>
11#include <asm/addrspace.h>
12#include <asm/page.h>
13#include <uapi/asm/ptrace.h>
14
15#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
16#define kernel_stack_pointer(_regs) ((unsigned long)(_regs)->regs[15])
17
18#define GET_FP(regs) ((regs)->regs[14])
19#define GET_USP(regs) ((regs)->regs[15])
20
21#define arch_has_single_step() (1)
22
23
24
25
26struct pt_regs_offset {
27 const char *name;
28 int offset;
29};
30
31#define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)}
32#define REGS_OFFSET_NAME(num) \
33 {.name = __stringify(r##num), .offset = offsetof(struct pt_regs, regs[num])}
34#define TREGS_OFFSET_NAME(num) \
35 {.name = __stringify(tr##num), .offset = offsetof(struct pt_regs, tregs[num])}
36#define REG_OFFSET_END {.name = NULL, .offset = 0}
37
38
39extern int regs_query_register_offset(const char *name);
40extern const char *regs_query_register_name(unsigned int offset);
41
42extern const struct pt_regs_offset regoffset_table[];
43
44
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50
51
52
53static inline unsigned long regs_get_register(struct pt_regs *regs,
54 unsigned int offset)
55{
56 if (unlikely(offset > MAX_REG_OFFSET))
57 return 0;
58 return *(unsigned long *)((unsigned long)regs + offset);
59}
60
61
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64
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66
67
68
69static inline int regs_within_kernel_stack(struct pt_regs *regs,
70 unsigned long addr)
71{
72 return ((addr & ~(THREAD_SIZE - 1)) ==
73 (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1)));
74}
75
76
77
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83
84
85static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
86 unsigned int n)
87{
88 unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
89 addr += n;
90 if (regs_within_kernel_stack(regs, (unsigned long)addr))
91 return *addr;
92 else
93 return 0;
94}
95
96struct perf_event;
97struct perf_sample_data;
98
99extern void ptrace_triggered(struct perf_event *bp,
100 struct perf_sample_data *data, struct pt_regs *regs);
101
102#define task_pt_regs(task) \
103 ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1)
104
105static inline unsigned long profile_pc(struct pt_regs *regs)
106{
107 unsigned long pc = regs->pc;
108
109 if (virt_addr_uncached(pc))
110 return CAC_ADDR(pc);
111
112 return pc;
113}
114#define profile_pc profile_pc
115
116#include <asm-generic/ptrace.h>
117#endif
118