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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> | |
6330a30a | 6 | #include <asm/processor-flags.h> |
8fc37f2c | 7 | |
6330a30a VN |
8 | #ifdef __KERNEL__ |
9 | #include <asm/ds.h> /* the DS BTS struct is used for ptrace too */ | |
10 | #include <asm/segment.h> | |
11 | #endif | |
eee3af4a | 12 | |
8fc37f2c TG |
13 | #ifndef __ASSEMBLY__ |
14 | ||
15 | #ifdef __i386__ | |
16 | /* this struct defines the way the registers are stored on the | |
17 | stack during a system call. */ | |
18 | ||
65ea5b03 PA |
19 | #ifndef __KERNEL__ |
20 | ||
8fc37f2c TG |
21 | struct pt_regs { |
22 | long ebx; | |
23 | long ecx; | |
24 | long edx; | |
25 | long esi; | |
26 | long edi; | |
27 | long ebp; | |
28 | long eax; | |
29 | int xds; | |
30 | int xes; | |
31 | int xfs; | |
65ea5b03 | 32 | /* int gs; */ |
8fc37f2c TG |
33 | long orig_eax; |
34 | long eip; | |
35 | int xcs; | |
36 | long eflags; | |
37 | long esp; | |
38 | int xss; | |
39 | }; | |
40 | ||
65ea5b03 PA |
41 | #else /* __KERNEL__ */ |
42 | ||
43 | struct pt_regs { | |
92bc2056 HH |
44 | unsigned long bx; |
45 | unsigned long cx; | |
46 | unsigned long dx; | |
47 | unsigned long si; | |
48 | unsigned long di; | |
49 | unsigned long bp; | |
9902a702 | 50 | unsigned long ax; |
92bc2056 HH |
51 | unsigned long ds; |
52 | unsigned long es; | |
53 | unsigned long fs; | |
65ea5b03 | 54 | /* int gs; */ |
9902a702 | 55 | unsigned long orig_ax; |
92bc2056 HH |
56 | unsigned long ip; |
57 | unsigned long cs; | |
58 | unsigned long flags; | |
59 | unsigned long sp; | |
60 | unsigned long ss; | |
65ea5b03 | 61 | }; |
8fc37f2c | 62 | |
8fc37f2c TG |
63 | #endif /* __KERNEL__ */ |
64 | ||
65 | #else /* __i386__ */ | |
66 | ||
65ea5b03 PA |
67 | #ifndef __KERNEL__ |
68 | ||
8fc37f2c TG |
69 | struct pt_regs { |
70 | unsigned long r15; | |
71 | unsigned long r14; | |
72 | unsigned long r13; | |
73 | unsigned long r12; | |
74 | unsigned long rbp; | |
75 | unsigned long rbx; | |
76 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
77 | unsigned long r11; | |
78 | unsigned long r10; | |
79 | unsigned long r9; | |
80 | unsigned long r8; | |
81 | unsigned long rax; | |
82 | unsigned long rcx; | |
83 | unsigned long rdx; | |
84 | unsigned long rsi; | |
85 | unsigned long rdi; | |
86 | unsigned long orig_rax; | |
87 | /* end of arguments */ | |
88 | /* cpu exception frame or undefined */ | |
89 | unsigned long rip; | |
90 | unsigned long cs; | |
91 | unsigned long eflags; | |
92 | unsigned long rsp; | |
93 | unsigned long ss; | |
94 | /* top of stack page */ | |
95 | }; | |
96 | ||
65ea5b03 PA |
97 | #else /* __KERNEL__ */ |
98 | ||
99 | struct pt_regs { | |
100 | unsigned long r15; | |
101 | unsigned long r14; | |
102 | unsigned long r13; | |
103 | unsigned long r12; | |
104 | unsigned long bp; | |
105 | unsigned long bx; | |
106 | /* arguments: non interrupts/non tracing syscalls only save upto here*/ | |
107 | unsigned long r11; | |
108 | unsigned long r10; | |
109 | unsigned long r9; | |
110 | unsigned long r8; | |
111 | unsigned long ax; | |
112 | unsigned long cx; | |
113 | unsigned long dx; | |
114 | unsigned long si; | |
115 | unsigned long di; | |
116 | unsigned long orig_ax; | |
117 | /* end of arguments */ | |
118 | /* cpu exception frame or undefined */ | |
119 | unsigned long ip; | |
120 | unsigned long cs; | |
121 | unsigned long flags; | |
122 | unsigned long sp; | |
123 | unsigned long ss; | |
124 | /* top of stack page */ | |
125 | }; | |
8fc37f2c | 126 | |
dbe3533b HH |
127 | #endif /* __KERNEL__ */ |
128 | #endif /* !__i386__ */ | |
8fc37f2c | 129 | |
dbe3533b HH |
130 | #ifdef __KERNEL__ |
131 | ||
132 | /* the DS BTS struct is used for ptrace as well */ | |
133 | #include <asm/ds.h> | |
8fc37f2c TG |
134 | |
135 | struct task_struct; | |
136 | ||
dbe3533b HH |
137 | extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier); |
138 | ||
139 | extern unsigned long profile_pc(struct pt_regs *regs); | |
140 | ||
8fc37f2c | 141 | extern unsigned long |
37cd9cf3 | 142 | convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs); |
8fc37f2c | 143 | |
dbe3533b | 144 | #ifdef CONFIG_X86_32 |
72f74fa2 JP |
145 | extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, |
146 | int error_code); | |
dbe3533b HH |
147 | #else |
148 | void signal_fault(struct pt_regs *regs, void __user *frame, char *where); | |
149 | #endif | |
efd1ca52 | 150 | |
9902a702 HH |
151 | static inline unsigned long regs_return_value(struct pt_regs *regs) |
152 | { | |
153 | return regs->ax; | |
154 | } | |
efd1ca52 | 155 | |
90d43d72 HH |
156 | /* |
157 | * user_mode_vm(regs) determines whether a register set came from user mode. | |
158 | * This is true if V8086 mode was enabled OR if the register set was from | |
159 | * protected mode with RPL-3 CS value. This tricky test checks that with | |
160 | * one comparison. Many places in the kernel can bypass this full check | |
161 | * if they have already ruled out V8086 mode, so user_mode(regs) can be used. | |
162 | */ | |
163 | static inline int user_mode(struct pt_regs *regs) | |
164 | { | |
165 | #ifdef CONFIG_X86_32 | |
166 | return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL; | |
167 | #else | |
168 | return !!(regs->cs & 3); | |
169 | #endif | |
170 | } | |
171 | ||
172 | static inline int user_mode_vm(struct pt_regs *regs) | |
173 | { | |
174 | #ifdef CONFIG_X86_32 | |
6b6891f9 | 175 | return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >= |
72f74fa2 | 176 | USER_RPL; |
90d43d72 HH |
177 | #else |
178 | return user_mode(regs); | |
179 | #endif | |
180 | } | |
181 | ||
182 | static inline int v8086_mode(struct pt_regs *regs) | |
183 | { | |
184 | #ifdef CONFIG_X86_32 | |
6b6891f9 | 185 | return (regs->flags & X86_VM_MASK); |
90d43d72 HH |
186 | #else |
187 | return 0; /* No V86 mode support in long mode */ | |
188 | #endif | |
189 | } | |
190 | ||
f6e8e284 HH |
191 | /* |
192 | * X86_32 CPUs don't save ss and esp if the CPU is already in kernel mode | |
193 | * when it traps. So regs will be the current sp. | |
194 | * | |
195 | * This is valid only for kernel mode traps. | |
196 | */ | |
197 | static inline unsigned long kernel_trap_sp(struct pt_regs *regs) | |
90d43d72 HH |
198 | { |
199 | #ifdef CONFIG_X86_32 | |
200 | return (unsigned long)regs; | |
201 | #else | |
202 | return regs->sp; | |
203 | #endif | |
204 | } | |
205 | ||
206 | static inline unsigned long instruction_pointer(struct pt_regs *regs) | |
207 | { | |
208 | return regs->ip; | |
209 | } | |
210 | ||
211 | static inline unsigned long frame_pointer(struct pt_regs *regs) | |
212 | { | |
213 | return regs->bp; | |
214 | } | |
215 | ||
7f232343 RM |
216 | /* |
217 | * These are defined as per linux/ptrace.h, which see. | |
218 | */ | |
219 | #define arch_has_single_step() (1) | |
220 | extern void user_enable_single_step(struct task_struct *); | |
221 | extern void user_disable_single_step(struct task_struct *); | |
222 | ||
10faa81e RM |
223 | extern void user_enable_block_step(struct task_struct *); |
224 | #ifdef CONFIG_X86_DEBUGCTLMSR | |
225 | #define arch_has_block_step() (1) | |
226 | #else | |
227 | #define arch_has_block_step() (boot_cpu_data.x86 >= 6) | |
228 | #endif | |
229 | ||
efd1ca52 RM |
230 | struct user_desc; |
231 | extern int do_get_thread_area(struct task_struct *p, int idx, | |
232 | struct user_desc __user *info); | |
233 | extern int do_set_thread_area(struct task_struct *p, int idx, | |
234 | struct user_desc __user *info, int can_allocate); | |
235 | ||
562b80ba RM |
236 | #define __ARCH_WANT_COMPAT_SYS_PTRACE |
237 | ||
efd1ca52 RM |
238 | #endif /* __KERNEL__ */ |
239 | ||
8fc37f2c TG |
240 | #endif /* !__ASSEMBLY__ */ |
241 | ||
96a388de | 242 | #endif |