blob: 0634b7895d81de360892cc58cd1c6f8182ce1448 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CSKY_PTRACE_H
#define __ASM_CSKY_PTRACE_H
#include <uapi/asm/ptrace.h>
#include <asm/traps.h>
#include <linux/types.h>
#include <linux/compiler.h>
#ifndef __ASSEMBLY__
#define PS_S 0x80000000 /* Supervisor Mode */
#define USR_BKPT 0x1464
#define arch_has_single_step() (1)
#define current_pt_regs() \
({ (struct pt_regs *)((char *)current_thread_info() + THREAD_SIZE) - 1; })
#define user_stack_pointer(regs) ((regs)->usp)
#define user_mode(regs) (!((regs)->sr & PS_S))
#define instruction_pointer(regs) ((regs)->pc)
#define profile_pc(regs) instruction_pointer(regs)
#define trap_no(regs) ((regs->sr >> 16) & 0xff)
static inline void instruction_pointer_set(struct pt_regs *regs,
unsigned long val)
{
regs->pc = val;
}
#if defined(__CSKYABIV2__)
#define MAX_REG_OFFSET offsetof(struct pt_regs, dcsr)
#else
#define MAX_REG_OFFSET offsetof(struct pt_regs, regs[9])
#endif
static inline bool in_syscall(struct pt_regs const *regs)
{
return ((regs->sr >> 16) & 0xff) == VEC_TRAP0;
}
static inline void forget_syscall(struct pt_regs *regs)
{
regs->sr &= ~(0xff << 16);
}
static inline unsigned long regs_return_value(struct pt_regs *regs)
{
return regs->a0;
}
static inline void regs_set_return_value(struct pt_regs *regs,
unsigned long val)
{
regs->a0 = val;
}
/* Valid only for Kernel mode traps. */
static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
{
return regs->usp;
}
static inline unsigned long frame_pointer(struct pt_regs *regs)
{
return regs->regs[4];
}
static inline void frame_pointer_set(struct pt_regs *regs,
unsigned long val)
{
regs->regs[4] = val;
}
extern int regs_query_register_offset(const char *name);
extern unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
unsigned int n);
/*
* regs_get_register() - get register value from its offset
* @regs: pt_regs from which register value is gotten
* @offset: offset of the register.
*
* regs_get_register returns the value of a register whose offset from @regs.
* The @offset is the offset of the register in struct pt_regs.
* If @offset is bigger than MAX_REG_OFFSET, this returns 0.
*/
static inline unsigned long regs_get_register(struct pt_regs *regs,
unsigned int offset)
{
if (unlikely(offset > MAX_REG_OFFSET))
return 0;
return *(unsigned long *)((unsigned long)regs + offset);
}
asmlinkage int syscall_trace_enter(struct pt_regs *regs);
asmlinkage void syscall_trace_exit(struct pt_regs *regs);
#endif /* __ASSEMBLY__ */
#endif /* __ASM_CSKY_PTRACE_H */
|
