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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/unix/i386/sysdep.h
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diff --git a/sysdeps/unix/i386/sysdep.h b/sysdeps/unix/i386/sysdep.h
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+/* 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 */