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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 | ||
10 | #ifdef __i386__ | |
11 | /* this struct defines the way the registers are stored on the | |
12 | stack during a system call. */ | |
13 | ||
65ea5b03 PA |
14 | #ifndef __KERNEL__ |
15 | ||
8fc37f2c TG |
16 | struct pt_regs { |
17 | long ebx; | |
18 | long ecx; | |
19 | long edx; | |
20 | long esi; | |
21 | long edi; | |
22 | long ebp; | |
23 | long eax; | |
24 | int xds; | |
25 | int xes; | |
26 | int xfs; | |
65ea5b03 | 27 | /* int gs; */ |
8fc37f2c TG |
28 | long orig_eax; |
29 | long eip; | |
30 | int xcs; | |
31 | long eflags; | |
32 | long esp; | |
33 | int xss; | |
34 | }; | |
35 | ||
65ea5b03 PA |
36 | #else /* __KERNEL__ */ |
37 | ||
38 | struct pt_regs { | |
39 | long bx; | |
40 | long cx; | |
41 | long dx; | |
42 | long si; | |
43 | long di; | |
44 | long bp; | |
45 | long ax; | |
46 | int ds; | |
47 | int es; | |
48 | int fs; | |
49 | /* int gs; */ | |
50 | long orig_ax; | |
51 | long ip; | |
52 | int cs; | |
53 | long flags; | |
54 | long sp; | |
55 | int ss; | |
56 | }; | |
8fc37f2c TG |
57 | |
58 | #include <asm/vm86.h> | |
59 | #include <asm/segment.h> | |
60 | ||
8fc37f2c TG |
61 | #endif /* __KERNEL__ */ |
62 | ||
63 | #else /* __i386__ */ | |
64 | ||
65ea5b03 PA |
65 | #ifndef __KERNEL__ |
66 | ||
8fc37f2c TG |
67 | struct pt_regs { |
68 | unsigned long r15; | |
69 | unsigned long r14; | |
70 | unsigned long r13; | |
71 | unsigned long r12; | |
72 | unsigned long rbp; | |
73 | unsigned long rbx; | |
74 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
75 | unsigned long r11; | |
76 | unsigned long r10; | |
77 | unsigned long r9; | |
78 | unsigned long r8; | |
79 | unsigned long rax; | |
80 | unsigned long rcx; | |
81 | unsigned long rdx; | |
82 | unsigned long rsi; | |
83 | unsigned long rdi; | |
84 | unsigned long orig_rax; | |
85 | /* end of arguments */ | |
86 | /* cpu exception frame or undefined */ | |
87 | unsigned long rip; | |
88 | unsigned long cs; | |
89 | unsigned long eflags; | |
90 | unsigned long rsp; | |
91 | unsigned long ss; | |
92 | /* top of stack page */ | |
93 | }; | |
94 | ||
65ea5b03 PA |
95 | #else /* __KERNEL__ */ |
96 | ||
97 | struct pt_regs { | |
98 | unsigned long r15; | |
99 | unsigned long r14; | |
100 | unsigned long r13; | |
101 | unsigned long r12; | |
102 | unsigned long bp; | |
103 | unsigned long bx; | |
104 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
105 | unsigned long r11; | |
106 | unsigned long r10; | |
107 | unsigned long r9; | |
108 | unsigned long r8; | |
109 | unsigned long ax; | |
110 | unsigned long cx; | |
111 | unsigned long dx; | |
112 | unsigned long si; | |
113 | unsigned long di; | |
114 | unsigned long orig_ax; | |
115 | /* end of arguments */ | |
116 | /* cpu exception frame or undefined */ | |
117 | unsigned long ip; | |
118 | unsigned long cs; | |
119 | unsigned long flags; | |
120 | unsigned long sp; | |
121 | unsigned long ss; | |
122 | /* top of stack page */ | |
123 | }; | |
8fc37f2c | 124 | |
dbe3533b HH |
125 | #endif /* __KERNEL__ */ |
126 | #endif /* !__i386__ */ | |
8fc37f2c | 127 | |
dbe3533b HH |
128 | #ifdef __KERNEL__ |
129 | ||
130 | /* the DS BTS struct is used for ptrace as well */ | |
131 | #include <asm/ds.h> | |
8fc37f2c TG |
132 | |
133 | struct task_struct; | |
134 | ||
dbe3533b HH |
135 | extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier); |
136 | ||
137 | extern unsigned long profile_pc(struct pt_regs *regs); | |
138 | ||
8fc37f2c | 139 | extern unsigned long |
37cd9cf3 | 140 | convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs); |
8fc37f2c | 141 | |
dbe3533b HH |
142 | #ifdef CONFIG_X86_32 |
143 | extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code); | |
144 | #else | |
145 | void signal_fault(struct pt_regs *regs, void __user *frame, char *where); | |
146 | #endif | |
efd1ca52 | 147 | |
dbe3533b | 148 | #define regs_return_value(regs) ((regs)->ax) |
efd1ca52 | 149 | |
90d43d72 HH |
150 | /* |
151 | * user_mode_vm(regs) determines whether a register set came from user mode. | |
152 | * This is true if V8086 mode was enabled OR if the register set was from | |
153 | * protected mode with RPL-3 CS value. This tricky test checks that with | |
154 | * one comparison. Many places in the kernel can bypass this full check | |
155 | * if they have already ruled out V8086 mode, so user_mode(regs) can be used. | |
156 | */ | |
157 | static inline int user_mode(struct pt_regs *regs) | |
158 | { | |
159 | #ifdef CONFIG_X86_32 | |
160 | return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; | |
161 | #else | |
162 | return !!(regs->cs & 3); | |
163 | #endif | |
164 | } | |
165 | ||
166 | static inline int user_mode_vm(struct pt_regs *regs) | |
167 | { | |
168 | #ifdef CONFIG_X86_32 | |
169 | return ((regs->cs & SEGMENT_RPL_MASK) | | |
170 | (regs->flags & VM_MASK)) >= USER_RPL; | |
171 | #else | |
172 | return user_mode(regs); | |
173 | #endif | |
174 | } | |
175 | ||
176 | static inline int v8086_mode(struct pt_regs *regs) | |
177 | { | |
178 | #ifdef CONFIG_X86_32 | |
179 | return (regs->flags & VM_MASK); | |
180 | #else | |
181 | return 0; /* No V86 mode support in long mode */ | |
182 | #endif | |
183 | } | |
184 | ||
f6e8e284 HH |
185 | /* |
186 | * X86_32 CPUs don't save ss and esp if the CPU is already in kernel mode | |
187 | * when it traps. So regs will be the current sp. | |
188 | * | |
189 | * This is valid only for kernel mode traps. | |
190 | */ | |
191 | static inline unsigned long kernel_trap_sp(struct pt_regs *regs) | |
90d43d72 HH |
192 | { |
193 | #ifdef CONFIG_X86_32 | |
194 | return (unsigned long)regs; | |
195 | #else | |
196 | return regs->sp; | |
197 | #endif | |
198 | } | |
199 | ||
200 | static inline unsigned long instruction_pointer(struct pt_regs *regs) | |
201 | { | |
202 | return regs->ip; | |
203 | } | |
204 | ||
205 | static inline unsigned long frame_pointer(struct pt_regs *regs) | |
206 | { | |
207 | return regs->bp; | |
208 | } | |
209 | ||
7f232343 RM |
210 | /* |
211 | * These are defined as per linux/ptrace.h, which see. | |
212 | */ | |
213 | #define arch_has_single_step() (1) | |
214 | extern void user_enable_single_step(struct task_struct *); | |
215 | extern void user_disable_single_step(struct task_struct *); | |
216 | ||
10faa81e RM |
217 | extern void user_enable_block_step(struct task_struct *); |
218 | #ifdef CONFIG_X86_DEBUGCTLMSR | |
219 | #define arch_has_block_step() (1) | |
220 | #else | |
221 | #define arch_has_block_step() (boot_cpu_data.x86 >= 6) | |
222 | #endif | |
223 | ||
efd1ca52 RM |
224 | struct user_desc; |
225 | extern int do_get_thread_area(struct task_struct *p, int idx, | |
226 | struct user_desc __user *info); | |
227 | extern int do_set_thread_area(struct task_struct *p, int idx, | |
228 | struct user_desc __user *info, int can_allocate); | |
229 | ||
230 | #endif /* __KERNEL__ */ | |
231 | ||
8fc37f2c TG |
232 | #endif /* !__ASSEMBLY__ */ |
233 | ||
96a388de | 234 | #endif |