diff options
Diffstat (limited to 'include/asm-x86/ptrace_32.h')
| -rw-r--r-- | include/asm-x86/ptrace_32.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/asm-x86/ptrace_32.h b/include/asm-x86/ptrace_32.h new file mode 100644 index 000000000000..6002597b9e12 --- /dev/null +++ b/include/asm-x86/ptrace_32.h @@ -0,0 +1,63 @@ +#ifndef _I386_PTRACE_H +#define _I386_PTRACE_H + +#include <asm/ptrace-abi.h> + +/* this struct defines the way the registers are stored on the + stack during a system call. */ + +struct pt_regs { + long ebx; + long ecx; + long edx; + long esi; + long edi; + long ebp; + long eax; + int xds; + int xes; + int xfs; + /* int xgs; */ + long orig_eax; + long eip; + int xcs; + long eflags; + long esp; + int xss; +}; + +#ifdef __KERNEL__ + +#include <asm/vm86.h> +#include <asm/segment.h> + +struct task_struct; +extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code); + +/* + * user_mode_vm(regs) determines whether a register set came from user mode. + * This is true if V8086 mode was enabled OR if the register set was from + * protected mode with RPL-3 CS value. This tricky test checks that with + * one comparison. Many places in the kernel can bypass this full check + * if they have already ruled out V8086 mode, so user_mode(regs) can be used. + */ +static inline int user_mode(struct pt_regs *regs) +{ + return (regs->xcs & SEGMENT_RPL_MASK) == USER_RPL; +} +static inline int user_mode_vm(struct pt_regs *regs) +{ + return ((regs->xcs & SEGMENT_RPL_MASK) | (regs->eflags & VM_MASK)) >= USER_RPL; +} +static inline int v8086_mode(struct pt_regs *regs) +{ + return (regs->eflags & VM_MASK); +} + +#define instruction_pointer(regs) ((regs)->eip) +#define regs_return_value(regs) ((regs)->eax) + +extern unsigned long profile_pc(struct pt_regs *regs); +#endif /* __KERNEL__ */ + +#endif |