4 #include <asm/ptrace-abi.h>
6 /* this struct defines the way the registers are stored on the
7 stack during a system call. */
30 #include <asm/segment.h>
33 extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code);
36 * user_mode_vm(regs) determines whether a register set came from user mode.
37 * This is true if V8086 mode was enabled OR if the register set was from
38 * protected mode with RPL-3 CS value. This tricky test checks that with
39 * one comparison. Many places in the kernel can bypass this full check
40 * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
42 static inline int user_mode(struct pt_regs *regs)
44 return (regs->xcs & SEGMENT_RPL_MASK) == USER_RPL;
46 static inline int user_mode_vm(struct pt_regs *regs)
48 return ((regs->xcs & SEGMENT_RPL_MASK) | (regs->eflags & VM_MASK)) >= USER_RPL;
50 #define instruction_pointer(regs) ((regs)->eip)
51 extern unsigned long profile_pc(struct pt_regs *regs);
52 #endif /* __KERNEL__ */