1 /* $NetBSD: core_machdep.c,v 1.10 2022/09/29 07:00:46 skrll Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: vm_machdep.c 1.21 91/04/06
37 *
38 * @(#)vm_machdep.c 8.3 (Berkeley) 1/4/94
39 */
40
41 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
42 __KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.10 2022/09/29 07:00:46 skrll Exp $");
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/proc.h>
47 #include <sys/buf.h>
48 #include <sys/vnode.h>
49 #include <sys/core.h>
50 #include <sys/exec.h>
51 #include <sys/cpu.h>
52 #include <sys/compat_stub.h>
53
54 #include <uvm/uvm_extern.h>
55
56 #include <mips/locore.h>
57 #include <mips/pcb.h>
58 #include <mips/cache.h>
59 #include <mips/regnum.h>
60 #include <mips/pte.h>
61 #include <mips/psl.h>
62
63 /*
64 * Dump the machine specific segment at the start of a core dump.
65 */
66 int
cpu_coredump(struct lwp * l,struct coredump_iostate * iocookie,struct core * chdr)67 cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie,
68 struct core *chdr)
69 {
70 int error;
71 struct coreseg cseg;
72 struct cpustate {
73 struct trapframe tf;
74 struct fpreg fpregs;
75 } cpustate;
76
77 if (iocookie == NULL) {
78 CORE_SETMAGIC(*chdr, COREMAGIC, MID_MACHINE, 0);
79 chdr->c_hdrsize = ALIGN(sizeof(struct core));
80 chdr->c_seghdrsize = ALIGN(sizeof(struct coreseg));
81 chdr->c_cpusize = sizeof(struct cpustate);
82 chdr->c_nseg++;
83 return 0;
84 }
85
86 pcu_save_all(l);
87 cpustate.tf = *l->l_md.md_utf;
88 cpustate.fpregs = ((struct pcb *)lwp_getpcb(l))->pcb_fpregs;
89
90 CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU);
91 cseg.c_addr = 0;
92 cseg.c_size = chdr->c_cpusize;
93
94 MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &cseg,
95 chdr->c_seghdrsize), ENOSYS, error);
96 if (error)
97 return error;
98
99 MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE,
100 &cpustate, chdr->c_cpusize), ENOSYS, error);
101
102 return error;
103 }
104