| /* vi: set sw=4 ts=4: */ |
| /* |
| * pipe syscall for uClibc sh |
| * |
| * Copyright (C) 2001 Lineo, <davidm@lineo.com> |
| * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| * |
| * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <syscall.h> |
| |
| |
| int pipe(int *fd) |
| { |
| long __res, __res2; |
| __asm__ __volatile__ ( |
| "mov %2, r3;" |
| "mov %3, r4;" |
| "trapa %4;" |
| "mov r1, %1;" |
| : "=z" (__res), |
| "=r" ((long) __res2) |
| : "r" ((long) __NR_pipe), |
| "r" ((long) fd), |
| "i" (__SH_SYSCALL_TRAP_BASE + 3) |
| : "cc", "memory", "r1", "r3", "r4"); |
| if ((unsigned long)(__res) >= (unsigned long)(-125)) { |
| int __err = -(__res); |
| errno = __err; |
| return(-1); |
| } |
| fd[0] = __res; |
| fd[1] = __res2; |
| return(0); |
| } |
| libc_hidden_def(pipe) |