* sysdeps/m68k/add_n.S: Use ENTRY and END macros.

* sysdeps/m68k/lshift.S: Likewise. 
* sysdeps/m68k/rshift.S: Likewise. 
* sysdeps/m68k/sub_n.S: Likewise. 
* sysdeps/m68k/m68020/addmul_1.S: Likewise. 
* sysdeps/m68k/m68020/mul_1.S: Likewise. 
* sysdeps/m68k/m68020/submul_1.S: Likewise. 
* sysdeps/unix/sysv/linux/m68k/sysdep.S: Use ENTRY macro. 
[_LIBC_REENTRANT]: Don't store into global errno. 
* sysdeps/m68k/sysdep.h: New file. 
* sysdeps/unix/sysv/linux/m68k/sysdep.h: Use it.  Use the macros 
ENTRY, CALL_MCOUNT, JUMPTARGET and syscall_error from there. 
(DO_CALL): Change to expect syscall name as argument. 
(PSEUDO): Pass syscall_name to DO_CALL. 
(SYSCALL_ERROR_HANDLER) [_LIBC_REENTRANT]: Don't store into global 
errno.
Fri Mar  6 10:40:30 1998  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/add_n.S: Use ENTRY and END macros.
	* sysdeps/m68k/lshift.S: Likewise.
	* sysdeps/m68k/rshift.S: Likewise.
	* sysdeps/m68k/sub_n.S: Likewise.
	* sysdeps/m68k/m68020/addmul_1.S: Likewise.
	* sysdeps/m68k/m68020/mul_1.S: Likewise.
	* sysdeps/m68k/m68020/submul_1.S: Likewise.

	* sysdeps/unix/sysv/linux/m68k/sysdep.S: Use ENTRY macro.
	[_LIBC_REENTRANT]: Don't store into global errno.

	* sysdeps/m68k/sysdep.h: New file.
	* sysdeps/unix/sysv/linux/m68k/sysdep.h: Use it.  Use the macros
	ENTRY, CALL_MCOUNT, JUMPTARGET and syscall_error from there.
	(DO_CALL): Change to expect syscall name as argument.
	(PSEUDO): Pass syscall_name to DO_CALL.
	(SYSCALL_ERROR_HANDLER) [_LIBC_REENTRANT]: Don't store into global
	errno.

1 files changed, 118 insertions, 0 deletions

diff --git a/sysdeps/m68k/sysdep.h b/sysdeps/m68k/sysdep.h
new file mode 100644
index 0000000000..5998f4218b
--- /dev/null
+++ b/sysdeps/m68k/sysdep.h
@@ -0,0 +1,118 @@
+/* Assembler macros for m68k.
+   Copyright (C) 1998 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, 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
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
+
+/* 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.  */
+#define ASM_SIZE_DIRECTIVE(name)	/* Nothing is specified.  */
+
+#endif
+
+
+/* Define an entry point visible from C.
+
+   There is currently a bug in gdb which prevents us from specifying
+   incomplete stabs information.  Fake some entries here which specify
+   the current source file.  */
+#define	ENTRY(name)							      \
+  STABS_CURRENT_FILE1("");						      \
+  STABS_CURRENT_FILE(name);						      \
+  .globl C_SYMBOL_NAME(name);						      \
+  ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),@function);			      \
+  .align ALIGNARG(2);							      \
+  STABS_FUN(name);							      \
+  C_LABEL(name)								      \
+  CALL_MCOUNT
+
+#undef END
+#define END(name)							      \
+  ASM_SIZE_DIRECTIVE(name);						      \
+  STABS_FUN_END(name)
+
+/* Remove the following two lines once the gdb bug is fixed.  */
+#define STABS_CURRENT_FILE(name)					      \
+  STABS_CURRENT_FILE1 (#name)
+#define STABS_CURRENT_FILE1(name)					      \
+  1: .stabs name,100,0,0,1b
+/* Emit stabs definition lines.  We use F(0,1) and define t(0,1) as `int',
+   the same way gcc does it.  */
+#define STABS_FUN(name) STABS_FUN1(name, name##:F(0,1))
+#define STABS_FUN1(name, namestr)					      \
+  .stabs "int:t(0,1)=r(0,1);-2147483648;2147483647;",128,0,0,0;		      \
+  .stabs #namestr,36,0,0,name
+#define STABS_FUN_END(name)						      \
+  1: .stabs "",36,0,0,1b-name
+
+
+/* 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 \
+  move.l %fp, -(%sp); move.l %sp, %fp;					      \
+  jbsr JUMPTARGET (mcount);						      \
+  move.l (%sp)+, %fp;
+#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)				      \
+  .globl syscall_error;							      \
+  ENTRY (name)								      \
+    DO_CALL (syscall_name, args);					      \
+    jcc JUMPTARGET(syscall_error)
+
+#undef PSEUDO_END
+#define PSEUDO_END(name)						      \
+  END (name)
+
+#ifdef PIC
+#define JUMPTARGET(name)	name##@PLTPC
+#else
+#define JUMPTARGET(name)	name
+#endif
+
+#endif	/* ASSEMBLER */