5a6d8c21e0
* include/linux/x86_64/syscall.h: New file. * include/linux/x86/syscall.h: New file. * lib/linux/x86_64-mes-gcc/mes.c: New file. * lib/linux/x86-mes/mes.c: Rename from lib/linux/mes.c. * lib/linux/x86-mes-gcc/mes.c: Rename from lib/linux/gcc.c. * lib/linux/libc.c: Update includes. (waitpid)[__x86_64__]: Use wait4. * build-aux/build-cc.sh: Build libc too. * lib/x86-mes/x86.M1 (mov____0x8(%ebp),%esi): New macro.
143 lines
3 KiB
C
143 lines
3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <libmes.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#if __MESC__
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#include <linux/x86-mes/mes.c>
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#elif __i386__
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#include <linux/x86-mes-gcc/mes.c>
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#elif __x86_64__
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#include <linux/x86_64-mes-gcc/mes.c>
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#else
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#error arch not supported
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#endif
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int
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fork ()
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{
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return _sys_call (SYS_fork);
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}
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ssize_t
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read (int filedes, void *buffer, size_t size)
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{
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ssize_t bytes = _sys_call3 (SYS_read, (long)filedes, (long)buffer, (long)size);
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if (__mes_debug () > 3)
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{
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if (bytes == 1)
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{
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eputs ("read fd="); eputs (itoa ((int)filedes)); eputs (" c="); eputc (*(char*)buffer); eputs ("\n");
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}
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else
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{
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eputs ("read fd="); eputs (itoa ((int)filedes));
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eputs (" bytes="); eputs (itoa (bytes)); eputs ("\n");
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}
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}
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return bytes;
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}
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int
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open (char const *file_name, int flags, ...)
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{
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va_list ap;
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va_start (ap, flags);
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int mask = va_arg (ap, int);
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#if !MES_BOOTSTRAP
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if (!flags)
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{
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_ungetc_pos = -1;
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_ungetc_fd = -1;
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}
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#endif
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int r = _sys_call3 (SYS_open, (long)file_name, (long)flags, (long)mask);
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va_end (ap);
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return r;
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}
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pid_t
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waitpid (pid_t pid, int *status_ptr, int options)
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{
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#if __i386__
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return _sys_call3 (SYS_waitpid, (long)pid, (long)status_ptr, (long)options);
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#elif __x86_64__
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return _sys_call4 (SYS_wait4, (long)pid, (long)status_ptr, (long)options, 0);
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#else
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#error arch not supported
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#endif
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}
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int
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execve (char const* file_name, char *const argv[], char *const env[])
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{
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return _sys_call3 (SYS_execve, (long)file_name, (long)argv, (long)env);
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}
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int
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chmod (char const *file_name, mode_t mask)
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{
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return _sys_call2 (SYS_chmod, (long)file_name, (long)mask);
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}
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int
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access (char const *file_name, int how)
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{
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return _sys_call2 (SYS_access, (long)file_name, (long)how);
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}
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long
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brk (void *addr)
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{
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return _sys_call1 (SYS_brk, (long)addr);
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}
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int
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ioctl (int filedes, unsigned long command, ...)
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{
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va_list ap;
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va_start (ap, command);
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int data = va_arg (ap, int);
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int r = _sys_call3 (SYS_ioctl, (long)filedes, (long)command, (long)data);
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va_end (ap);
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return r;
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}
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int
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fsync (int filedes)
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{
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return _sys_call1 (SYS_fsync, (long)filedes);
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}
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