include/asm-x86/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_A_OUT_CORE_H
  13 #define _ASM_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  */
  24 static 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_A_OUT_CORE_H */