/* * 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 ( \ "movq $__get_kernel_nofault_faulted_%=,%1\n" \ "mov $0, %0\n" \ "jmp _end_%=\n" \ "__get_kernel_nofault_faulted_%=:\n" \ "mov $1, %0;" \ "_end_%=:" \ : "=r" (_faulted), \ "=m" (current->thread.segv_continue) :: \ ) #endif