diff options
Diffstat (limited to 'sysdeps/unix/i386/sysdep.h')
| -rw-r--r-- | sysdeps/unix/i386/sysdep.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/unix/i386/sysdep.h b/sysdeps/unix/i386/sysdep.h new file mode 100644 index 0000000000..38dd2378b5 --- /dev/null +++ b/sysdeps/unix/i386/sysdep.h @@ -0,0 +1,55 @@ +/* Copyright (C) 1991, 1992, 1993, 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 <sysdeps/unix/sysdep.h> + +#ifdef ASSEMBLER + +#define ENTRY(name) \ + .globl C_SYMBOL_NAME(name); \ + .align 4; \ + C_LABEL(name) + +#ifdef NO_UNDERSCORES +/* Since C identifiers are not normally prefixed with an underscore + on this system, the asm identifier `syscall_error' intrudes on the + C name space. Make sure we use an innocuous name. */ +#define syscall_error __syscall_error +#endif + +#define PSEUDO(name, syscall_name, args) \ + .globl syscall_error; \ + ENTRY (name) \ + DO_CALL (syscall_name, args); \ + jb syscall_error + +/* This is defined as a separate macro so that other sysdep.h files + can include this one and then redefine DO_CALL. */ + +#define DO_CALL(syscall_name, args) \ + lea SYS_ify (syscall_name), %eax; \ + /* lcall $7, $0; */ \ + /* Above loses; GAS bug. */ \ + .byte 0x9a, 0, 0, 0, 0, 7, 0 + +#define r0 %eax /* Normal return-value register. */ +#define r1 %edx /* Secondary return-value register. */ +#define scratch %ecx /* Call-clobbered register for random use. */ +#define MOVE(x,y) movl x, y + +#endif /* ASSEMBLER */ |