1 /* $NetBSD: core_machdep.c,v 1.6 2019/11/20 19:37:53 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 1982, 1986 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * the Systems Programming Group of the University of Utah Computer
9 * Science Department, and William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
36 */
37
38 /*-
39 * Copyright (c) 1995 Charles M. Hannum. All rights reserved.
40 * Copyright (c) 1989, 1990 William Jolitz
41 * All rights reserved.
42 *
43 * This code is derived from software contributed to Berkeley by
44 * the Systems Programming Group of the University of Utah Computer
45 * Science Department, and William Jolitz.
46 *
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
49 * are met:
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. All advertising materials mentioning features or use of this software
56 * must display the following acknowledgement:
57 * This product includes software developed by the University of
58 * California, Berkeley and its contributors.
59 * 4. Neither the name of the University nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
62 *
63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * SUCH DAMAGE.
74 *
75 * @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
76 */
77
78 /*
79 * Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
80 */
81
82 #include <sys/cdefs.h>
83 __KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.6 2019/11/20 19:37:53 pgoyette Exp $");
84
85 #include <sys/param.h>
86 #include <sys/systm.h>
87 #include <sys/proc.h>
88 #include <sys/vnode.h>
89 #include <sys/buf.h>
90 #include <sys/core.h>
91 #include <sys/exec.h>
92 #include <sys/ptrace.h>
93 #include <sys/compat_stub.h>
94
95 #include <sys/exec_aout.h>
96
97 #include <uvm/uvm_extern.h>
98
99 #include <machine/cpu.h>
100 #include <machine/gdt.h>
101 #include <machine/reg.h>
102 #include <machine/specialreg.h>
103
104 /*
105 * Dump the machine specific segment at the start of a core dump.
106 */
107
108 struct md_core {
109 struct reg intreg;
110 struct fpreg freg;
111 };
112
113 int
cpu_coredump(struct lwp * l,struct coredump_iostate * iocookie,struct core * chdr)114 cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie,
115 struct core *chdr)
116 {
117 struct md_core md_core;
118 struct coreseg cseg;
119 size_t fp_size;
120 int error;
121
122 if (iocookie == NULL) {
123 CORE_SETMAGIC(*chdr, COREMAGIC, MID_MACHINE, 0);
124 chdr->c_hdrsize = ALIGN(sizeof(*chdr));
125 chdr->c_seghdrsize = ALIGN(sizeof(cseg));
126 chdr->c_cpusize = sizeof(md_core);
127 chdr->c_nseg++;
128 return 0;
129 }
130
131 /* Save integer registers. */
132 error = process_read_regs(l, &md_core.intreg);
133 if (error)
134 return error;
135
136 /* Save floating point registers. */
137 fp_size = sizeof md_core.freg;
138 error = process_read_fpregs(l, &md_core.freg, &fp_size);
139 if (error)
140 return error;
141
142 CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU);
143 cseg.c_addr = 0;
144 cseg.c_size = chdr->c_cpusize;
145
146 MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &cseg,
147 chdr->c_seghdrsize), ENOSYS, error);
148 if (error)
149 return error;
150
151 MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE,
152 &md_core, sizeof(md_core)), ENOSYS, error);
153
154 return error;
155 }
156