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David Howells7fa30312008-02-08 04:19:28 -08001/* 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
H. Peter Anvin1965aae2008-10-22 22:26:29 -070012#ifndef _ASM_X86_A_OUT_CORE_H
13#define _ASM_X86_A_OUT_CORE_H
David Howells7fa30312008-02-08 04:19:28 -080014
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);
Joe Perchesb03aa8c2008-03-23 01:01:38 -070032 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;
David Howells7fa30312008-02-08 04:19:28 -080035 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)
Joe Perchesb03aa8c2008-03-23 01:01:38 -070047 dump->u_ssize = ((unsigned long)(TASK_SIZE - dump->start_stack))
48 >> PAGE_SHIFT;
David Howells7fa30312008-02-08 04:19:28 -080049
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;
Joe Perchesb03aa8c2008-03-23 01:01:38 -070060 savesegment(gs, gs);
David Howells7fa30312008-02-08 04:19:28 -080061 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
Joe Perchesb03aa8c2008-03-23 01:01:38 -070068 dump->u_fpvalid = dump_fpu(regs, &dump->i387);
David Howells7fa30312008-02-08 04:19:28 -080069}
70
71#endif /* CONFIG_X86_32 */
72#endif /* __KERNEL__ */
H. Peter Anvin1965aae2008-10-22 22:26:29 -070073#endif /* _ASM_X86_A_OUT_CORE_H */