1 #ifndef _ASM_X86_PTRACE_H
2 #define _ASM_X86_PTRACE_H
4 #include <linux/compiler.h> /* For __user */
5 #include <asm/ptrace-abi.h>
12 /* the DS BTS struct is used for ptrace as well */
16 extern void ptrace_bts_take_timestamp(struct task_struct *, enum bts_qualifier);
18 #endif /* __KERNEL__ */
22 /* this struct defines the way the registers are stored on the
23 stack during a system call. */
47 #else /* __KERNEL__ */
70 #include <asm/segment.h>
75 convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
77 extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code);
80 * user_mode_vm(regs) determines whether a register set came from user mode.
81 * This is true if V8086 mode was enabled OR if the register set was from
82 * protected mode with RPL-3 CS value. This tricky test checks that with
83 * one comparison. Many places in the kernel can bypass this full check
84 * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
86 static inline int user_mode(struct pt_regs *regs)
88 return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
90 static inline int user_mode_vm(struct pt_regs *regs)
92 return ((regs->cs & SEGMENT_RPL_MASK) |
93 (regs->flags & VM_MASK)) >= USER_RPL;
95 static inline int v8086_mode(struct pt_regs *regs)
97 return (regs->flags & VM_MASK);
100 #define instruction_pointer(regs) ((regs)->ip)
101 #define frame_pointer(regs) ((regs)->bp)
102 #define stack_pointer(regs) ((unsigned long)(regs))
103 #define regs_return_value(regs) ((regs)->ax)
105 extern unsigned long profile_pc(struct pt_regs *regs);
106 #endif /* __KERNEL__ */
119 /* arguments: non interrupts/non tracing syscalls only save upto here*/
129 unsigned long orig_rax;
130 /* end of arguments */
131 /* cpu exception frame or undefined */
134 unsigned long eflags;
137 /* top of stack page */
140 #else /* __KERNEL__ */
149 /* arguments: non interrupts/non tracing syscalls only save upto here*/
159 unsigned long orig_ax;
160 /* end of arguments */
161 /* cpu exception frame or undefined */
167 /* top of stack page */
170 #define user_mode(regs) (!!((regs)->cs & 3))
171 #define user_mode_vm(regs) user_mode(regs)
172 #define v8086_mode(regs) 0 /* No V86 mode support in long mode */
173 #define instruction_pointer(regs) ((regs)->ip)
174 #define frame_pointer(regs) ((regs)->bp)
175 #define stack_pointer(regs) ((regs)->sp)
176 #define regs_return_value(regs) ((regs)->ax)
178 extern unsigned long profile_pc(struct pt_regs *regs);
179 void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
184 convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs);
186 #endif /* __KERNEL__ */
187 #endif /* !__i386__ */
192 * These are defined as per linux/ptrace.h, which see.
194 #define arch_has_single_step() (1)
195 extern void user_enable_single_step(struct task_struct *);
196 extern void user_disable_single_step(struct task_struct *);
198 extern void user_enable_block_step(struct task_struct *);
199 #ifdef CONFIG_X86_DEBUGCTLMSR
200 #define arch_has_block_step() (1)
202 #define arch_has_block_step() (boot_cpu_data.x86 >= 6)
206 extern int do_get_thread_area(struct task_struct *p, int idx,
207 struct user_desc __user *info);
208 extern int do_set_thread_area(struct task_struct *p, int idx,
209 struct user_desc __user *info, int can_allocate);
211 #endif /* __KERNEL__ */
213 #endif /* !__ASSEMBLY__ */