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-rw-r--r--sysdeps/i386/sysdep.h91
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diff --git a/sysdeps/i386/sysdep.h b/sysdeps/i386/sysdep.h
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+/* Assembler macros for i386.
+Copyright (C) 1991, 92, 93, 95, 96 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/generic/sysdep.h>
+
+#ifdef ASSEMBLER
+
+/* Syntactic details of assembler. */
+
+#ifdef HAVE_ELF
+
+/* ELF uses byte-counts for .align, most others use log2 of count of bytes. */
+#define ALIGNARG(log2) 1<<log2
+/* For ELF we need the `.type' directive to make shared libs work right. */
+#define ASM_TYPE_DIRECTIVE(name,typearg) .type name,typearg;
+
+/* In ELF C symbols are asm symbols. */
+#undef NO_UNDERSCORES
+#define NO_UNDERSCORES
+
+#else
+
+#define ALIGNARG(log2) log2
+#define ASM_TYPE_DIRECTIVE(name,type) /* Nothing is specified. */
+
+#endif
+
+
+/* Define an entry point visible from C. */
+#define ENTRY(name) \
+ ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \
+ ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function) \
+ .align ALIGNARG(4); \
+ C_LABEL(name) \
+ CALL_MCOUNT
+
+/* If compiled for profiling, call `mcount' at the start of each function. */
+#ifdef PROF
+/* The mcount code relies on a normal frame pointer being on the stack
+ to locate our caller, so push one just for its benefit. */
+#define CALL_MCOUNT \
+ pushl %ebp; movl %esp, %ebp; call JUMPTARGET(mcount); popl %ebp;
+#else
+#define CALL_MCOUNT /* Do nothing. */
+#endif
+
+#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
+#define mcount _mcount
+#endif
+
+#define PSEUDO(name, syscall_name, args) \
+lose: SYSCALL_PIC_SETUP \
+ jmp JUMPTARGET(syscall_error) \
+ .globl syscall_error; \
+ ENTRY (name) \
+ DO_CALL (syscall_name, args); \
+ jb lose
+
+#ifdef PIC
+#define JUMPTARGET(name) name##@PLT
+#define SYSCALL_PIC_SETUP \
+ pushl %ebx; \
+ call 0f; \
+0: popl %ebx; \
+ addl $_GLOBAL_OFFSET_TABLE+[.-0b], %ebx;
+#else
+#define JUMPTARGET(name) name
+#define SYSCALL_PIC_SETUP /* Nothing. */
+#endif
+
+#endif /* ASSEMBLER */