1 /* $NetBSD: linux_sys_machdep.c,v 1.14 2010/07/07 01:30:33 chs 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 1.14 2010/07/07 01:30:33 chs 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 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 60 linux_sys_cacheflush(struct lwp *l, const struct linux_sys_cacheflush_args *uap, register_t *retval) 61 { 62 #ifndef acorn26 63 /* { 64 syscallarg(uintptr_t) from; 65 syscallarg(uintptr_t) to; 66 syscallarg(int) flags; 67 } */ 68 69 cpu_icache_sync_range(SCARG(uap, from), 70 SCARG(uap, to) - SCARG(uap, from) + 1); 71 #endif 72 *retval = 0; 73 return 0; 74 } 75 76 int 77 linux_sys_set_tls(struct lwp *l, const struct linux_sys_set_tls_args *uap, register_t *retval) 78 { 79 80 return lwp_setprivate(l, SCARG(uap, tls)); 81 } 82