1/* $NetBSD: core_machdep.c,v 1.6 2011/06/13 21:32:42 matt Exp $ */
2
3/*
4 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
31
32__KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.6 2011/06/13 21:32:42 matt Exp $");
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/proc.h>
37#include <sys/malloc.h>
38#include <sys/buf.h>
39#include <sys/vnode.h>
40#include <sys/core.h>
41#include <sys/exec.h>
42
43#include <sys/exec_aout.h>
44
45#include <machine/cpu.h>
46#include <machine/alpha.h>
47#include <machine/pmap.h>
48#include <machine/reg.h>
49
50/*
51 * Dump the machine specific header information at the start of a core dump.
52 */
53int
54cpu_coredump(struct lwp *l, void *iocookie, struct core *chdr)
55{
56	int error;
57	struct md_coredump cpustate;
58	struct coreseg cseg;
59
60	if (iocookie == NULL) {
61		CORE_SETMAGIC(*chdr, COREMAGIC, MID_MACHINE, 0);
62		chdr->c_hdrsize = ALIGN(sizeof(*chdr));
63		chdr->c_seghdrsize = ALIGN(sizeof(cseg));
64		chdr->c_cpusize = sizeof(cpustate);
65		chdr->c_nseg++;
66		return 0;
67	}
68
69	pcu_save_all(l);
70	cpustate.md_tf = *l->l_md.md_tf;
71	cpustate.md_tf.tf_regs[FRAME_SP] = alpha_pal_rdusp();	/* XXX */
72	if (fpu_used_p(l)) {
73		cpustate.md_fpstate = ((struct pcb *)lwp_getpcb(l))->pcb_fp;
74	} else
75		memset(&cpustate.md_fpstate, 0, sizeof(cpustate.md_fpstate));
76
77	CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU);
78	cseg.c_addr = 0;
79	cseg.c_size = chdr->c_cpusize;
80
81	error = coredump_write(iocookie, UIO_SYSSPACE, &cseg,
82	    chdr->c_seghdrsize);
83	if (error)
84		return error;
85
86	return coredump_write(iocookie, UIO_SYSSPACE, &cpustate,
87	    sizeof(cpustate));
88}
89