diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/syscall.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/syscall.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/syscall.S b/sysdeps/unix/sysv/linux/i386/syscall.S new file mode 100644 index 0000000000..6e6aa5d3c8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/syscall.S @@ -0,0 +1,31 @@ +/* Copyright (C) 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sysdep.h> + +.globl syscall_error +ENTRY (syscall) + popl %ecx /* Pop return address into %ecx. */ + popl %eax /* Pop syscall number into %eax. */ + pushl %ecx /* Push back return address. */ + DO_CALL (5) /* Frob the args and do the system call. */ + movl (%esp), %ecx + pushl %ecx + testl %eax, %eax /* Check %eax for error. */ + jl JUMPTARGET(syscall_error) /* Jump to error handler if negative. */ + ret /* Return to caller. */ |