xref: /freebsd/lib/libthread_db/arch/arm/libpthread_md.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
1 /*
2  * Copyright (c) 2007 Olivier Houchard
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <string.h>
31 #include <sys/types.h>
32 #include <proc_service.h>
33 #include <thread_db.h>
34 
35 #include "libpthread_db.h"
36 
37 void
38 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
39 {
40 	mcontext_t *mc = &uc->uc_mcontext;
41 	__greg_t *gr = mc->__gregs;
42 
43 	gr[_REG_R0] = r->r[0];
44 	gr[_REG_R1] = r->r[1];
45 	gr[_REG_R2] = r->r[2];
46 	gr[_REG_R3] = r->r[3];
47 	gr[_REG_R4] = r->r[4];
48 	gr[_REG_R5] = r->r[5];
49 	gr[_REG_R6] = r->r[6];
50 	gr[_REG_R7] = r->r[7];
51 	gr[_REG_R8] = r->r[8];
52 	gr[_REG_R9] = r->r[9];
53 	gr[_REG_R10] = r->r[10];
54 	gr[_REG_R11] = r->r[11];
55 	gr[_REG_R12] = r->r[12];
56 	gr[_REG_SP] = r->r_sp;
57 	gr[_REG_LR] = r->r_lr;
58 	gr[_REG_PC] = r->r_pc;
59 	gr[_REG_CPSR] = r->r_cpsr;
60 }
61 
62 void
63 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
64 {
65 	const mcontext_t *mc = &uc->uc_mcontext;
66 
67 	const __greg_t *gr = mc->__gregs;
68 
69 	r->r[0] = gr[_REG_R0];
70 	r->r[1] = gr[_REG_R1];
71 	r->r[2] = gr[_REG_R2];
72 	r->r[3] = gr[_REG_R3];
73 	r->r[4] = gr[_REG_R4];
74 	r->r[5] = gr[_REG_R5];
75 	r->r[6] = gr[_REG_R6];
76 	r->r[7] = gr[_REG_R7];
77 	r->r[8] = gr[_REG_R8];
78 	r->r[9] = gr[_REG_R9];
79 	r->r[10] = gr[_REG_R10];
80 	r->r[11] = gr[_REG_R11];
81 	r->r[12] = gr[_REG_R12];
82 	r->r_sp = gr[_REG_SP];
83 	r->r_lr = gr[_REG_LR];
84 	r->r_pc = gr[_REG_PC];
85 	r->r_cpsr = gr[_REG_CPSR];
86 }
87 
88 void
89 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
90 {
91 	mcontext_t *mc = &uc->uc_mcontext;
92 
93 	/* XXX */
94 	memset(&mc->__fpu.__fpregs, 0, sizeof(__fpregset_t));
95 }
96 
97 void
98 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
99 {
100 	const mcontext_t *mc = &uc->uc_mcontext;
101 
102 	/* XXX */
103 	memset(r, 0, sizeof(*r));
104 }
105 
106 void
107 pt_md_init(void)
108 {
109 }
110 
111 int
112 pt_reg_sstep(struct reg *reg, int step)
113 {
114 
115 	/* XXX */
116 }
117