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8fc37f2c TG |
1 | #ifndef _ASM_X86_PTRACE_H |
2 | #define _ASM_X86_PTRACE_H | |
3 | ||
4 | #include <linux/compiler.h> /* For __user */ | |
5 | #include <asm/ptrace-abi.h> | |
6 | ||
eee3af4a | 7 | |
8fc37f2c TG |
8 | #ifndef __ASSEMBLY__ |
9 | ||
eee3af4a MM |
10 | #ifdef __KERNEL__ |
11 | ||
12 | #include <asm/ds.h> | |
13 | ||
14 | struct task_struct; | |
15 | extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier); | |
16 | ||
17 | #endif /* __KERNEL__ */ | |
18 | ||
19 | ||
8fc37f2c TG |
20 | #ifdef __i386__ |
21 | /* this struct defines the way the registers are stored on the | |
22 | stack during a system call. */ | |
23 | ||
65ea5b03 PA |
24 | #ifndef __KERNEL__ |
25 | ||
8fc37f2c TG |
26 | struct pt_regs { |
27 | long ebx; | |
28 | long ecx; | |
29 | long edx; | |
30 | long esi; | |
31 | long edi; | |
32 | long ebp; | |
33 | long eax; | |
34 | int xds; | |
35 | int xes; | |
36 | int xfs; | |
65ea5b03 | 37 | /* int gs; */ |
8fc37f2c TG |
38 | long orig_eax; |
39 | long eip; | |
40 | int xcs; | |
41 | long eflags; | |
42 | long esp; | |
43 | int xss; | |
44 | }; | |
45 | ||
65ea5b03 PA |
46 | #else /* __KERNEL__ */ |
47 | ||
48 | struct pt_regs { | |
49 | long bx; | |
50 | long cx; | |
51 | long dx; | |
52 | long si; | |
53 | long di; | |
54 | long bp; | |
55 | long ax; | |
56 | int ds; | |
57 | int es; | |
58 | int fs; | |
59 | /* int gs; */ | |
60 | long orig_ax; | |
61 | long ip; | |
62 | int cs; | |
63 | long flags; | |
64 | long sp; | |
65 | int ss; | |
66 | }; | |
8fc37f2c TG |
67 | |
68 | #include <asm/vm86.h> | |
69 | #include <asm/segment.h> | |
70 | ||
71 | struct task_struct; | |
72 | extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code); | |
73 | ||
74 | /* | |
75 | * user_mode_vm(regs) determines whether a register set came from user mode. | |
76 | * This is true if V8086 mode was enabled OR if the register set was from | |
77 | * protected mode with RPL-3 CS value. This tricky test checks that with | |
78 | * one comparison. Many places in the kernel can bypass this full check | |
79 | * if they have already ruled out V8086 mode, so user_mode(regs) can be used. | |
80 | */ | |
81 | static inline int user_mode(struct pt_regs *regs) | |
82 | { | |
65ea5b03 | 83 | return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; |
8fc37f2c TG |
84 | } |
85 | static inline int user_mode_vm(struct pt_regs *regs) | |
86 | { | |
65ea5b03 PA |
87 | return ((regs->cs & SEGMENT_RPL_MASK) | |
88 | (regs->flags & VM_MASK)) >= USER_RPL; | |
8fc37f2c TG |
89 | } |
90 | static inline int v8086_mode(struct pt_regs *regs) | |
91 | { | |
65ea5b03 | 92 | return (regs->flags & VM_MASK); |
8fc37f2c TG |
93 | } |
94 | ||
65ea5b03 PA |
95 | #define instruction_pointer(regs) ((regs)->ip) |
96 | #define frame_pointer(regs) ((regs)->bp) | |
77f2878b | 97 | #define stack_pointer(regs) ((unsigned long)(regs)) |
65ea5b03 | 98 | #define regs_return_value(regs) ((regs)->ax) |
8fc37f2c TG |
99 | |
100 | extern unsigned long profile_pc(struct pt_regs *regs); | |
101 | #endif /* __KERNEL__ */ | |
102 | ||
103 | #else /* __i386__ */ | |
104 | ||
65ea5b03 PA |
105 | #ifndef __KERNEL__ |
106 | ||
8fc37f2c TG |
107 | struct pt_regs { |
108 | unsigned long r15; | |
109 | unsigned long r14; | |
110 | unsigned long r13; | |
111 | unsigned long r12; | |
112 | unsigned long rbp; | |
113 | unsigned long rbx; | |
114 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
115 | unsigned long r11; | |
116 | unsigned long r10; | |
117 | unsigned long r9; | |
118 | unsigned long r8; | |
119 | unsigned long rax; | |
120 | unsigned long rcx; | |
121 | unsigned long rdx; | |
122 | unsigned long rsi; | |
123 | unsigned long rdi; | |
124 | unsigned long orig_rax; | |
125 | /* end of arguments */ | |
126 | /* cpu exception frame or undefined */ | |
127 | unsigned long rip; | |
128 | unsigned long cs; | |
129 | unsigned long eflags; | |
130 | unsigned long rsp; | |
131 | unsigned long ss; | |
132 | /* top of stack page */ | |
133 | }; | |
134 | ||
65ea5b03 PA |
135 | #else /* __KERNEL__ */ |
136 | ||
137 | struct pt_regs { | |
138 | unsigned long r15; | |
139 | unsigned long r14; | |
140 | unsigned long r13; | |
141 | unsigned long r12; | |
142 | unsigned long bp; | |
143 | unsigned long bx; | |
144 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
145 | unsigned long r11; | |
146 | unsigned long r10; | |
147 | unsigned long r9; | |
148 | unsigned long r8; | |
149 | unsigned long ax; | |
150 | unsigned long cx; | |
151 | unsigned long dx; | |
152 | unsigned long si; | |
153 | unsigned long di; | |
154 | unsigned long orig_ax; | |
155 | /* end of arguments */ | |
156 | /* cpu exception frame or undefined */ | |
157 | unsigned long ip; | |
158 | unsigned long cs; | |
159 | unsigned long flags; | |
160 | unsigned long sp; | |
161 | unsigned long ss; | |
162 | /* top of stack page */ | |
163 | }; | |
8fc37f2c TG |
164 | |
165 | #define user_mode(regs) (!!((regs)->cs & 3)) | |
166 | #define user_mode_vm(regs) user_mode(regs) | |
65ea5b03 PA |
167 | #define v8086_mode(regs) 0 /* No V86 mode support in long mode */ |
168 | #define instruction_pointer(regs) ((regs)->ip) | |
169 | #define frame_pointer(regs) ((regs)->bp) | |
170 | #define stack_pointer(regs) ((regs)->sp) | |
171 | #define regs_return_value(regs) ((regs)->ax) | |
8fc37f2c TG |
172 | |
173 | extern unsigned long profile_pc(struct pt_regs *regs); | |
174 | void signal_fault(struct pt_regs *regs, void __user *frame, char *where); | |
175 | ||
176 | struct task_struct; | |
177 | ||
178 | extern unsigned long | |
179 | convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs); | |
180 | ||
8fc37f2c TG |
181 | #endif /* __KERNEL__ */ |
182 | #endif /* !__i386__ */ | |
efd1ca52 RM |
183 | |
184 | #ifdef __KERNEL__ | |
185 | ||
7f232343 RM |
186 | /* |
187 | * These are defined as per linux/ptrace.h, which see. | |
188 | */ | |
189 | #define arch_has_single_step() (1) | |
190 | extern void user_enable_single_step(struct task_struct *); | |
191 | extern void user_disable_single_step(struct task_struct *); | |
192 | ||
10faa81e RM |
193 | extern void user_enable_block_step(struct task_struct *); |
194 | #ifdef CONFIG_X86_DEBUGCTLMSR | |
195 | #define arch_has_block_step() (1) | |
196 | #else | |
197 | #define arch_has_block_step() (boot_cpu_data.x86 >= 6) | |
198 | #endif | |
199 | ||
efd1ca52 RM |
200 | struct user_desc; |
201 | extern int do_get_thread_area(struct task_struct *p, int idx, | |
202 | struct user_desc __user *info); | |
203 | extern int do_set_thread_area(struct task_struct *p, int idx, | |
204 | struct user_desc __user *info, int can_allocate); | |
205 | ||
206 | #endif /* __KERNEL__ */ | |
207 | ||
8fc37f2c TG |
208 | #endif /* !__ASSEMBLY__ */ |
209 | ||
96a388de | 210 | #endif |