1 /* $NetBSD: linux_sys_machdep.c,v 1.15 2018/01/24 09:04:45 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 2002 Ben Harris
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/param.h>
31
32 __KERNEL_RCSID(0, "$NetBSD: linux_sys_machdep.c,v 1.15 2018/01/24 09:04:45 skrll Exp $");
33
34 #include <sys/systm.h>
35 #include <sys/signalvar.h>
36 #include <sys/lwp.h>
37 #include <sys/cpu.h>
38
39 #include <compat/linux/common/linux_types.h>
40 #include <compat/linux/common/linux_signal.h>
41 #include <compat/linux/common/linux_siginfo.h>
42 #include <compat/linux/common/linux_machdep.h>
43 #include <compat/linux/linux_syscallargs.h>
44
45 #include <arm/cpufunc.h>
46
47 int
linux_sys_breakpoint(struct lwp * l,const void * v,register_t * retval)48 linux_sys_breakpoint(struct lwp *l, const void *v, register_t *retval)
49 {
50 ksiginfo_t ksi;
51
52 KSI_INIT_TRAP(&ksi);
53 ksi.ksi_signo = SIGTRAP;
54 ksi.ksi_code = TRAP_BRKPT;
55 trapsignal(l, &ksi);
56 return ERESTART; /* Leave PC pointing back at the breakpoint. */
57 }
58
59 int
linux_sys_cacheflush(struct lwp * l,const struct linux_sys_cacheflush_args * uap,register_t * retval)60 linux_sys_cacheflush(struct lwp *l, const struct linux_sys_cacheflush_args *uap, register_t *retval)
61 {
62 /* {
63 syscallarg(uintptr_t) from;
64 syscallarg(uintptr_t) to;
65 syscallarg(int) flags;
66 } */
67
68 cpu_icache_sync_range(SCARG(uap, from),
69 SCARG(uap, to) - SCARG(uap, from) + 1);
70 *retval = 0;
71 return 0;
72 }
73
74 int
linux_sys_set_tls(struct lwp * l,const struct linux_sys_set_tls_args * uap,register_t * retval)75 linux_sys_set_tls(struct lwp *l, const struct linux_sys_set_tls_args *uap, register_t *retval)
76 {
77
78 return lwp_setprivate(l, SCARG(uap, tls));
79 }
80