LXR linux/arch/x86/include/asm/a.out-core.h

   1/* a.out coredump register dumper
   2 *
   3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public Licence
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the Licence, or (at your option) any later version.
  10 */
  11
  12#ifndef _ASM_X86_A_OUT_CORE_H
  13#define _ASM_X86_A_OUT_CORE_H
  14
  15#ifdef __KERNEL__
  16#ifdef CONFIG_X86_32
  17
  18#include <linux/user.h>
  19#include <linux/elfcore.h>
  20#include <asm/debugreg.h>
  21
  22/*
  23 * fill in the user structure for an a.out core dump
  24 */
  25static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
  26{
  27/* changed the size calculations - should hopefully work better. lbt */
  28        dump->magic = CMAGIC;
  29        dump->start_code = 0;
  30        dump->start_stack = regs->sp & ~(PAGE_SIZE - 1);
  31        dump->u_tsize = ((unsigned long)current->mm->end_code) >> PAGE_SHIFT;
  32        dump->u_dsize = ((unsigned long)(current->mm->brk + (PAGE_SIZE - 1)))
  33                        >> PAGE_SHIFT;
  34        dump->u_dsize -= dump->u_tsize;
  35        dump->u_ssize = 0;
  36        aout_dump_debugregs(dump);
  37
  38        if (dump->start_stack < TASK_SIZE)
  39                dump->u_ssize = ((unsigned long)(TASK_SIZE - dump->start_stack))
  40                                >> PAGE_SHIFT;
  41
  42        dump->regs.bx = regs->bx;
  43        dump->regs.cx = regs->cx;
  44        dump->regs.dx = regs->dx;
  45        dump->regs.si = regs->si;
  46        dump->regs.di = regs->di;
  47        dump->regs.bp = regs->bp;
  48        dump->regs.ax = regs->ax;
  49        dump->regs.ds = (u16)regs->ds;
  50        dump->regs.es = (u16)regs->es;
  51        dump->regs.fs = (u16)regs->fs;
  52        dump->regs.gs = get_user_gs(regs);
  53        dump->regs.orig_ax = regs->orig_ax;
  54        dump->regs.ip = regs->ip;
  55        dump->regs.cs = (u16)regs->cs;
  56        dump->regs.flags = regs->flags;
  57        dump->regs.sp = regs->sp;
  58        dump->regs.ss = (u16)regs->ss;
  59
  60        dump->u_fpvalid = dump_fpu(regs, &dump->i387);
  61}
  62
  63#endif /* CONFIG_X86_32 */
  64#endif /* __KERNEL__ */
  65#endif /* _ASM_X86_A_OUT_CORE_H */
  66