1 /* $NetBSD: cpu_arm.c,v 1.3 2022/01/01 21:07:14 andvar Exp $ */
2
3 /*-
4 * Copyright (c) 2011 Reinoud Zandijk <reinoud@netbsd.org>
5 * Copyright (c) 2007, 2013 Jared D. McNeill <jmcneill@invisible.ca>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 /*
31 * Note that this machdep.c uses the `dummy' mcontext_t defined for usermode.
32 * This is basically a blob of PAGE_SIZE big. We might want to switch over to
33 * non-generic mcontext_t's one day, but will this break non-NetBSD hosts?
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: cpu_arm.c,v 1.3 2022/01/01 21:07:14 andvar Exp $");
38
39 #include <sys/types.h>
40 #include <sys/systm.h>
41 #include <sys/param.h>
42 #include <sys/time.h>
43 #include <sys/exec.h>
44 #include <sys/buf.h>
45 #include <sys/boot_flag.h>
46 #include <sys/ucontext.h>
47 #include <sys/utsname.h>
48 #include <machine/pcb.h>
49 #include <machine/psl.h>
50
51 #include <uvm/uvm_extern.h>
52 #include <uvm/uvm_page.h>
53
54 #include <dev/mm.h>
55 #include <machine/machdep.h>
56 #include <machine/thunk.h>
57
58 #include "opt_exec.h"
59
60 /* from sys/arch/arm/include/frame.h : KEEP IN SYNC */
61 struct sigframe_siginfo {
62 siginfo_t sf_si; /* actual saved siginfo */
63 ucontext_t sf_uc; /* actual saved ucontext */
64 };
65
66 void
sendsig_siginfo(const ksiginfo_t * ksi,const sigset_t * mask)67 sendsig_siginfo(const ksiginfo_t *ksi, const sigset_t *mask)
68 {
69 panic("sendsig_siginfo not implemented");
70 }
71
72 void
setregs(struct lwp * l,struct exec_package * pack,vaddr_t stack)73 setregs(struct lwp *l, struct exec_package *pack, vaddr_t stack)
74 {
75 panic("sendsig_siginfo not implemented");
76 }
77
78 void
md_syscall_get_syscallnumber(ucontext_t * ucp,uint32_t * code)79 md_syscall_get_syscallnumber(ucontext_t *ucp, uint32_t *code)
80 {
81 panic("md_syscall_get_syscallnumber not implemented");
82 }
83
84 int
md_syscall_getargs(lwp_t * l,ucontext_t * ucp,int nargs,int argsize,register_t * args)85 md_syscall_getargs(lwp_t *l, ucontext_t *ucp, int nargs, int argsize,
86 register_t *args)
87 {
88 panic("md_syscall_getargs not implemented");
89 return 0;
90 }
91
92 void
md_syscall_set_returnargs(lwp_t * l,ucontext_t * ucp,int error,register_t * rval)93 md_syscall_set_returnargs(lwp_t *l, ucontext_t *ucp,
94 int error, register_t *rval)
95 {
96 panic("md_syscall_set_returnargs not implemented");
97 }
98
99 register_t
md_get_pc(ucontext_t * ucp)100 md_get_pc(ucontext_t *ucp)
101 {
102 unsigned int *reg = (unsigned int *)&ucp->uc_mcontext;
103 return reg[15];
104 }
105
106 register_t
md_get_sp(ucontext_t * ucp)107 md_get_sp(ucontext_t *ucp)
108 {
109 unsigned int *reg = (unsigned int *)&ucp->uc_mcontext;
110 return reg[13];
111 }
112
113 int
md_syscall_check_opcode(ucontext_t * ucp)114 md_syscall_check_opcode(ucontext_t *ucp)
115 {
116 panic("md_syscall_check_opcode not implemented");
117 return 0;
118 }
119
120 void
md_syscall_get_opcode(ucontext_t * ucp,uint32_t * opcode)121 md_syscall_get_opcode(ucontext_t *ucp, uint32_t *opcode)
122 {
123 panic("md_syscall_get_opcode not implemented");
124 }
125
126 void
md_syscall_inc_pc(ucontext_t * ucp,uint32_t opcode)127 md_syscall_inc_pc(ucontext_t *ucp, uint32_t opcode)
128 {
129 panic("md_syscall_inc_pc not implemented");
130 }
131
132 void
md_syscall_dec_pc(ucontext_t * ucp,uint32_t opcode)133 md_syscall_dec_pc(ucontext_t *ucp, uint32_t opcode)
134 {
135 panic("md_syscall_dec_pc not implemented");
136 }
137
138