diff options
Diffstat (limited to 'newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S')
| -rw-r--r-- | newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S b/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S new file mode 100644 index 000000000..aec21c0f5 --- /dev/null +++ b/newlib/libc/sys/linux/linuxthreads/machine/i386/i386-sysdep.S @@ -0,0 +1,60 @@ +/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 2000 Free Software Foundation, Inc. + This file has been modified from 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#define _ERRNO_H +#include <bits/errno.h> +#include <bp-asm.h> +#include <bp-sym.h> + +.globl __syscall_error + +__syscall_error: +#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN + /* We translate the system's EWOULDBLOCK error into EAGAIN. + The GNU C library always defines EWOULDBLOCK==EAGAIN. + EWOULDBLOCK_sys is the original number. */ + cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */ + jne notb /* Branch if not. */ + movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ +notb: +#endif +#ifndef PIC + pushl %eax + PUSH_ERRNO_LOCATION_RETURN + call BP_SYM (__errno) + POP_ERRNO_LOCATION_RETURN + popl %ecx + movl %ecx, (%eax) +#else + /* The caller has pushed %ebx and then set it up to + point to the GOT before calling us through the PLT. */ + pushl %eax + PUSH_ERRNO_LOCATION_RETURN + call C_SYMBOL_NAME (BP_SYM (__errno)@PLT) + POP_ERRNO_LOCATION_RETURN + popl %ecx + /* Pop %ebx value saved before jumping here. */ + popl %ebx + movl %ecx, (%eax) +#endif + movl $-1, %eax + ret + +#undef __syscall_error +END (__syscall_error) |