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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [libgloss/] [d30v/] [syscalls.c] - Rev 246
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/* * syscalls.c -- provide system call support via trap 31 * * Copyright (c) 1997 Cygnus Support * * The authors hereby grant permission to use, copy, modify, distribute, * and license this software and its documentation for any purpose, provided * that existing copyright notices are retained in all copies and that this * notice is included verbatim in any distributions. No written agreement, * license, or royalty fee is required for any of the authorized uses. * Modifications to this software may be copyrighted by their authors * and need not follow the licensing terms described here, provided that * the new terms are clearly indicated on the first page of each file where * they apply. * * Read bytes, using simulator trap 31. */ #include <stdlib.h> #include <time.h> #include "syscall.h" extern int *__errno(), errno; __asm__ ( " .globl __syscall \n\ .type __syscall,@function \n\ __syscall: \n\ trap 31 || nop \n\ cmpge f0,r2,0 -> jmp/tx link \n\ bra __set_errno \n\ .size __syscall,.-__syscall \n\ "); int __set_errno (int new_errno) { errno = new_errno; *(__errno)() = errno; return -1; } void _exit (int status) { __syscall (status, 0, 0, 0, SYS_exit); } int open (const char *filename, int flags, int mode) { return __syscall (filename, flags, mode, 0, SYS_open); } int close (int filedes) { return __syscall (filedes, 0, 0, 0, SYS_close); } int read (int filedes, void *buffer, size_t length) { return __syscall (filedes, buffer, length, 0, SYS_read); } int write (int filedes, void *buffer, size_t length) { return __syscall (filedes, buffer, length, 0, SYS_write); } long lseek (int filedes, long offset, int whence) { return __syscall (filedes, offset, whence, 0, SYS_lseek); } int unlink (const char *filename) { return __syscall (filename, 0, 0, 0, SYS_unlink); } int getpid (void) { return __syscall (0, 0, 0, 0, SYS_getpid); } int kill (int signal, int pid) { return __syscall (signal, pid, 0, 0, SYS_kill); } int fstat (int filedes, void *info) { return __syscall (filedes, info, 0, 0, SYS_fstat); } int __argvlen (void) { return __syscall (0, 0, 0, 0, SYS_argvlen); } int __argv (void) { return __syscall (0, 0, 0, 0, SYS_argv); } int chdir (char *dir) { return __syscall (dir, 0, 0, 0, SYS_chdir); } int stat (const char *filename, void *info) { return __syscall (filename, info, 0, 0, SYS_stat); } int chmod (const char *filename, int mode) { return __syscall (filename, mode, 0, 0, SYS_chmod); } int utime (const char *filename, void *packet) { return __syscall (filename, packet, 0, 0, SYS_utime); } time_t time (time_t *time_ptr) { time_t result; result = (time_t) __syscall (time_ptr, 0, 0, 0, SYS_time); if (time_ptr != NULL) *time_ptr = result; return result; }
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