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7#ifndef __ASM_ARC_PTRACE_H
8#define __ASM_ARC_PTRACE_H
9
10#include <uapi/asm/ptrace.h>
11
12#ifndef __ASSEMBLY__
13
14
15
16#ifdef CONFIG_ISA_ARCOMPACT
17struct pt_regs {
18
19
20 unsigned long bta;
21
22 unsigned long lp_start, lp_end, lp_count;
23
24 unsigned long status32;
25 unsigned long ret;
26 unsigned long blink;
27 unsigned long fp;
28 unsigned long r26;
29
30 unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
31
32 unsigned long sp;
33 unsigned long orig_r0;
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35
36
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38
39
40
41
42 union {
43 struct {
44#ifdef CONFIG_CPU_BIG_ENDIAN
45 unsigned long state:8, ecr_vec:8,
46 ecr_cause:8, ecr_param:8;
47#else
48 unsigned long ecr_param:8, ecr_cause:8,
49 ecr_vec:8, state:8;
50#endif
51 };
52 unsigned long event;
53 };
54
55 unsigned long user_r25;
56};
57#else
58
59struct pt_regs {
60
61 unsigned long orig_r0;
62
63 union {
64 struct {
65#ifdef CONFIG_CPU_BIG_ENDIAN
66 unsigned long state:8, ecr_vec:8,
67 ecr_cause:8, ecr_param:8;
68#else
69 unsigned long ecr_param:8, ecr_cause:8,
70 ecr_vec:8, state:8;
71#endif
72 };
73 unsigned long event;
74 };
75
76 unsigned long bta;
77
78 unsigned long user_r25;
79
80 unsigned long r26;
81 unsigned long fp;
82 unsigned long sp;
83
84 unsigned long r12, r30;
85
86#ifdef CONFIG_ARC_HAS_ACCL_REGS
87 unsigned long r58, r59;
88#endif
89#ifdef CONFIG_ARC_DSP_SAVE_RESTORE_REGS
90 unsigned long DSP_CTRL;
91#endif
92
93
94 unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
95
96 unsigned long blink;
97 unsigned long lp_end, lp_start, lp_count;
98
99 unsigned long ei, ldi, jli;
100
101 unsigned long ret;
102 unsigned long status32;
103};
104
105#endif
106
107
108
109struct callee_regs {
110 unsigned long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
111};
112
113#define instruction_pointer(regs) ((regs)->ret)
114#define profile_pc(regs) instruction_pointer(regs)
115
116
117#define user_mode(regs) (regs->status32 & STATUS_U_MASK)
118
119#define user_stack_pointer(regs)\
120({ unsigned int sp; \
121 if (user_mode(regs)) \
122 sp = (regs)->sp;\
123 else \
124 sp = -1; \
125 sp; \
126})
127
128
129#define delay_mode(regs) ((regs->status32 & STATUS_DE_MASK) == STATUS_DE_MASK)
130
131#define in_syscall(regs) ((regs->ecr_vec == ECR_V_TRAP) && !regs->ecr_param)
132#define in_brkpt_trap(regs) ((regs->ecr_vec == ECR_V_TRAP) && regs->ecr_param)
133
134#define STATE_SCALL_RESTARTED 0x01
135
136#define syscall_wont_restart(reg) (reg->state |= STATE_SCALL_RESTARTED)
137#define syscall_restartable(reg) !(reg->state & STATE_SCALL_RESTARTED)
138
139#define current_pt_regs() \
140({ \
141 \
142 register unsigned long sp asm ("sp"); \
143 unsigned long pg_start = (sp & ~(THREAD_SIZE - 1)); \
144 (struct pt_regs *)(pg_start + THREAD_SIZE) - 1; \
145})
146
147static inline long regs_return_value(struct pt_regs *regs)
148{
149 return (long)regs->r0;
150}
151
152static inline void instruction_pointer_set(struct pt_regs *regs,
153 unsigned long val)
154{
155 instruction_pointer(regs) = val;
156}
157#endif
158
159#endif
160