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
  21/*
  22 * fill in the user structure for an a.out core dump
  23 */
  24static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
  25{
  26        u16 gs;
  27
  28/* changed the size calculations - should hopefully work better. lbt */
  29        dump->magic = CMAGIC;
  30        dump->start_code = 0;
  31        dump->start_stack = regs->sp & ~(PAGE_SIZE - 1);
  32        dump->u_tsize = ((unsigned long)current->mm->end_code) >> PAGE_SHIFT;
  33        dump->u_dsize = ((unsigned long)(current->mm->brk + (PAGE_SIZE - 1)))
  34                        >> PAGE_SHIFT;
  35        dump->u_dsize -= dump->u_tsize;
  36        dump->u_ssize = 0;
  37        dump->u_debugreg[0] = current->thread.debugreg0;
  38        dump->u_debugreg[1] = current->thread.debugreg1;
  39        dump->u_debugreg[2] = current->thread.debugreg2;
  40        dump->u_debugreg[3] = current->thread.debugreg3;
  41        dump->u_debugreg[4] = 0;
  42        dump->u_debugreg[5] = 0;
  43        dump->u_debugreg[6] = current->thread.debugreg6;
  44        dump->u_debugreg[7] = current->thread.debugreg7;
  45
  46        if (dump->start_stack < TASK_SIZE)
  47                dump->u_ssize = ((unsigned long)(TASK_SIZE - dump->start_stack))
  48                                >> PAGE_SHIFT;
  49
  50        dump->regs.bx = regs->bx;
  51        dump->regs.cx = regs->cx;
  52        dump->regs.dx = regs->dx;
  53        dump->regs.si = regs->si;
  54        dump->regs.di = regs->di;
  55        dump->regs.bp = regs->bp;
  56        dump->regs.ax = regs->ax;
  57        dump->regs.ds = (u16)regs->ds;
  58        dump->regs.es = (u16)regs->es;
  59        dump->regs.fs = (u16)regs->fs;
  60        savesegment(gs, gs);
  61        dump->regs.orig_ax = regs->orig_ax;
  62        dump->regs.ip = regs->ip;
  63        dump->regs.cs = (u16)regs->cs;
  64        dump->regs.flags = regs->flags;
  65        dump->regs.sp = regs->sp;
  66        dump->regs.ss = (u16)regs->ss;
  67
  68        dump->u_fpvalid = dump_fpu(regs, &dump->i387);
  69}
  70
  71#endif /* CONFIG_X86_32 */
  72#endif /* __KERNEL__ */
  73#endif /* _ASM_X86_A_OUT_CORE_H */
  74