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/*
* Copyright (C) 2004 Fujitsu Siemens Computers GmbH
* Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
* Licensed under the GPL
*/
#ifndef __FAULTINFO_X86_64_H
#define __FAULTINFO_X86_64_H
/* this structure contains the full arch-specific faultinfo
* from the traps.
* On i386, ptrace_faultinfo unfortunately doesn't provide
* all the info, since trap_no is missing.
* All common elements are defined at the same position in
* both structures, thus making it easy to copy the
* contents without knowledge about the structure elements.
*/
struct faultinfo {
int error_code; /* in ptrace_faultinfo misleadingly called is_write */
unsigned long cr2; /* in ptrace_faultinfo called addr */
int trap_no; /* missing in ptrace_faultinfo */
};
#define FAULT_WRITE(fi) ((fi).error_code & 2)
#define FAULT_ADDRESS(fi) ((fi).cr2)
/* This is Page Fault */
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
#define PTRACE_FULL_FAULTINFO 1
#define ___backtrack_faulted(_faulted) \
asm volatile ( \
"mov $0, %0\n" \
"movq $__get_kernel_nofault_faulted_%=,%1\n" \
"jmp _end_%=\n" \
"__get_kernel_nofault_faulted_%=:\n" \
"mov $1, %0;" \
"_end_%=:" \
: "=r" (_faulted), \
"=m" (current->thread.segv_continue) :: \
)
#endif
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