1 /* 2 * BSD syscalls 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * Copyright (c) 2013-2014 Stacey D. Son 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 /* 22 * We need the FreeBSD "legacy" definitions. Rust needs the FreeBSD 11 system 23 * calls since it doesn't use libc at all, so we have to emulate that despite 24 * FreeBSD 11 being EOL'd. 25 */ 26 #define _WANT_FREEBSD11_STAT 27 #define _WANT_FREEBSD11_STATFS 28 #define _WANT_FREEBSD11_DIRENT 29 #define _WANT_KERNEL_ERRNO 30 #define _WANT_SEMUN 31 #include "qemu/osdep.h" 32 #include "qemu/cutils.h" 33 #include "qemu/path.h" 34 #include <sys/syscall.h> 35 #include <sys/param.h> 36 #include <sys/sysctl.h> 37 #include <utime.h> 38 39 #include "qemu.h" 40 #include "qemu-common.h" 41 #include "signal-common.h" 42 #include "user/syscall-trace.h" 43 44 #include "bsd-file.h" 45 46 void target_set_brk(abi_ulong new_brk) 47 { 48 } 49 50 /* 51 * errno conversion. 52 */ 53 abi_long get_errno(abi_long ret) 54 { 55 if (ret == -1) { 56 return -host_to_target_errno(errno); 57 } else { 58 return ret; 59 } 60 } 61 62 int host_to_target_errno(int err) 63 { 64 /* 65 * All the BSDs have the property that the error numbers are uniform across 66 * all architectures for a given BSD, though they may vary between different 67 * BSDs. 68 */ 69 return err; 70 } 71 72 bool is_error(abi_long ret) 73 { 74 return (abi_ulong)ret >= (abi_ulong)(-4096); 75 } 76 77 /* 78 * do_syscall() should always have a single exit point at the end so that 79 * actions, such as logging of syscall results, can be performed. All errnos 80 * that do_syscall() returns must be -TARGET_<errcode>. 81 */ 82 abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, 83 abi_long arg2, abi_long arg3, abi_long arg4, 84 abi_long arg5, abi_long arg6, abi_long arg7, 85 abi_long arg8) 86 { 87 return 0; 88 } 89 90 void syscall_init(void) 91 { 92 } 93