From 9f2990dbbf39786d7396caf65006093fc4f52b2e Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Fri, 6 Mar 1998 01:48:50 +0000
Subject: * 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.
---
 sysdeps/m68k/add_n.S                  |  10 +--
 sysdeps/m68k/lshift.S                 |  10 +--
 sysdeps/m68k/m68020/addmul_1.S        |  10 +--
 sysdeps/m68k/m68020/mul_1.S           |  10 +--
 sysdeps/m68k/m68020/submul_1.S        |  10 +--
 sysdeps/m68k/rshift.S                 |  10 +--
 sysdeps/m68k/sub_n.S                  |  10 +--
 sysdeps/m68k/sysdep.h                 | 118 ++++++++++++++++++++++++++++++++++
 sysdeps/unix/sysv/linux/m68k/sysdep.S |  12 ++--
 sysdeps/unix/sysv/linux/m68k/sysdep.h |  47 ++------------
 10 files changed, 152 insertions(+), 95 deletions(-)
 create mode 100644 sysdeps/m68k/sysdep.h

(limited to 'sysdeps')

diff --git a/sysdeps/m68k/add_n.S b/sysdeps/m68k/add_n.S
index 7ca5b95bcc..c993c2aeb8 100644
--- a/sysdeps/m68k/add_n.S
+++ b/sysdeps/m68k/add_n.S
@@ -1,7 +1,7 @@
 /* mc68020 __mpn_add_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.
 
-Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -32,11 +32,7 @@ MA 02111-1307, USA. */
 #include "asm-syntax.h"
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_add_n)
-
-C_SYMBOL_NAME(__mpn_add_n:)
-PROLOG(__mpn_add_n)
+ENTRY(__mpn_add_n)
 /* Save used registers on the stack.  */
 	movel	R(d2),MEM_PREDEC(sp)
 	movel	R(a2),MEM_PREDEC(sp)
@@ -77,4 +73,4 @@ L(L2:)
 	movel	MEM_POSTINC(sp),R(d2)
 
 	rts
-EPILOG(__mpn_add_n)
+END(__mpn_add_n)
diff --git a/sysdeps/m68k/lshift.S b/sysdeps/m68k/lshift.S
index dc2da206d1..a1d6690bd5 100644
--- a/sysdeps/m68k/lshift.S
+++ b/sysdeps/m68k/lshift.S
@@ -1,6 +1,6 @@
 /* mc68020 __mpn_lshift -- Shift left a low-level natural-number integer.
 
-Copyright (C) 1996 Free Software Foundation, Inc.
+Copyright (C) 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -36,11 +36,7 @@ MA 02111-1307, USA. */
 #define cnt d4
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_lshift)
-
-C_SYMBOL_NAME(__mpn_lshift:)
-PROLOG(__mpn_lshift)
+ENTRY(__mpn_lshift)
 
 /* Save used registers on the stack.  */
 	moveml	R(d2)-R(d6)/R(a2),MEM_PREDEC(sp)
@@ -148,4 +144,4 @@ L(LLend:)
 /* Restore used registers from stack frame.  */
 	moveml	MEM_POSTINC(sp),R(d2)-R(d6)/R(a2)
 	rts
-EPILOG(__mpn_lshift)
+END(__mpn_lshift)
diff --git a/sysdeps/m68k/m68020/addmul_1.S b/sysdeps/m68k/m68020/addmul_1.S
index 4b99c21f84..7f885575c8 100644
--- a/sysdeps/m68k/m68020/addmul_1.S
+++ b/sysdeps/m68k/m68020/addmul_1.S
@@ -1,7 +1,7 @@
 /* mc68020 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
    the result to a second limb vector.
 
-Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -32,11 +32,7 @@ MA 02111-1307, USA. */
 #include "asm-syntax.h"
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_addmul_1)
-
-C_SYMBOL_NAME(__mpn_addmul_1:)
-PROLOG(__mpn_addmul_1)
+ENTRY(__mpn_addmul_1)
 
 #define res_ptr a0
 #define s1_ptr a1
@@ -81,4 +77,4 @@ L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
 	moveml	MEM_POSTINC(sp),R(d2)-R(d5)
 
 	rts
-EPILOG(__mpn_addmul_1)
+END(__mpn_addmul_1)
diff --git a/sysdeps/m68k/m68020/mul_1.S b/sysdeps/m68k/m68020/mul_1.S
index ef7d93721f..367f77faf9 100644
--- a/sysdeps/m68k/m68020/mul_1.S
+++ b/sysdeps/m68k/m68020/mul_1.S
@@ -1,7 +1,7 @@
 /* mc68020 __mpn_mul_1 -- Multiply a limb vector with a limb and store
    the result in a second limb vector.
 
-Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -32,11 +32,7 @@ MA 02111-1307, USA. */
 #include "asm-syntax.h"
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_mul_1)
-
-C_SYMBOL_NAME(__mpn_mul_1:)
-PROLOG(__mpn_mul_1)
+ENTRY(__mpn_mul_1)
 
 #define res_ptr a0
 #define s1_ptr a1
@@ -88,4 +84,4 @@ L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
 	movel	MEM_POSTINC(sp),R(d2)
 #endif
 	rts
-EPILOG(__mpn_mul_1)
+END(__mpn_mul_1)
diff --git a/sysdeps/m68k/m68020/submul_1.S b/sysdeps/m68k/m68020/submul_1.S
index 9770c6cd6b..2710045c13 100644
--- a/sysdeps/m68k/m68020/submul_1.S
+++ b/sysdeps/m68k/m68020/submul_1.S
@@ -1,7 +1,7 @@
 /* mc68020 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract
    the result from a second limb vector.
 
-Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -32,11 +32,7 @@ MA 02111-1307, USA. */
 #include "asm-syntax.h"
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_submul_1)
-
-C_SYMBOL_NAME(__mpn_submul_1:)
-PROLOG(__mpn_submul_1)
+ENTRY(__mpn_submul_1)
 
 #define res_ptr a0
 #define s1_ptr a1
@@ -81,4 +77,4 @@ L(L1:)	movel	MEM_POSTINC(s1_ptr),R(d3)
 	moveml	MEM_POSTINC(sp),R(d2)-R(d5)
 
 	rts
-EPILOG(__mpn_submul_1)
+END(__mpn_submul_1)
diff --git a/sysdeps/m68k/rshift.S b/sysdeps/m68k/rshift.S
index f529390cf8..3b7a24b363 100644
--- a/sysdeps/m68k/rshift.S
+++ b/sysdeps/m68k/rshift.S
@@ -1,6 +1,6 @@
 /* mc68020 __mpn_rshift -- Shift right a low-level natural-number integer.
 
-Copyright (C) 1996 Free Software Foundation, Inc.
+Copyright (C) 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -36,11 +36,7 @@ MA 02111-1307, USA. */
 #define cnt d4
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_rshift)
-
-C_SYMBOL_NAME(__mpn_rshift:)
-PROLOG(__mpn_rshift)
+ENTRY(__mpn_rshift)
 /* Save used registers on the stack.  */
 	moveml	R(d2)-R(d6)/R(a2),MEM_PREDEC(sp)
 
@@ -147,4 +143,4 @@ L(LLend:)
 /* Restore used registers from stack frame.  */
 	moveml	MEM_POSTINC(sp),R(d2)-R(d6)/R(a2)
 	rts
-EPILOG(__mpn_rshift)
+END(__mpn_rshift)
diff --git a/sysdeps/m68k/sub_n.S b/sysdeps/m68k/sub_n.S
index f94b0c7282..92fb47a4c3 100644
--- a/sysdeps/m68k/sub_n.S
+++ b/sysdeps/m68k/sub_n.S
@@ -1,7 +1,7 @@
 /* mc68020 __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
    store difference in a third limb vector.
 
-Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc.
+Copyright (C) 1992, 1994, 1996, 1998 Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.
 
@@ -32,11 +32,7 @@ MA 02111-1307, USA. */
 #include "asm-syntax.h"
 
 	TEXT
-	ALIGN
-	GLOBL	C_SYMBOL_NAME(__mpn_sub_n)
-
-C_SYMBOL_NAME(__mpn_sub_n:)
-PROLOG(__mpn_sub_n)
+ENTRY(__mpn_sub_n)
 /* Save used registers on the stack.  */
 	movel	R(d2),MEM_PREDEC(sp)
 	movel	R(a2),MEM_PREDEC(sp)
@@ -77,4 +73,4 @@ L(L2:)
 	movel	MEM_POSTINC(sp),R(d2)
 
 	rts
-EPILOG(__mpn_sub_n)
+END(__mpn_sub_n)
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 */
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.S b/sysdeps/unix/sysv/linux/m68k/sysdep.S
index 5533be2c1b..6008b23aa5 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep.S
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep.S
@@ -43,13 +43,15 @@ _errno = errno	/* This name is expected by hj's libc.so.5 startup code.  */
 
 /* The syscall stubs jump here when they detect an error.  */
 
-	.globl	__syscall_error
-	.type	__syscall_error, @function
-	.align	4
-__syscall_error:
+#undef CALL_MCOUNT
+#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %d0.  */
+
+	.text
+ENTRY (__syscall_error)
 	neg.l %d0
+#ifndef _LIBC_REENTRANT
 	move.l %d0, errno
-#ifdef _LIBC_REENTRANT
+#else
 	move.l %d0, -(%sp)
 	jbsr __errno_location
 	move.l (%sp)+, (%a0)
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.h b/sysdeps/unix/sysv/linux/m68k/sysdep.h
index 5263c71ecf..03360b84f9 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep.h
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>,
    December 1995.
@@ -19,6 +19,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <sysdeps/unix/sysdep.h>
+#include <sysdeps/m68k/sysdep.h>
 
 /* For Linux we can use the system call table in the header file
 	/usr/include/asm/unistd.h
@@ -33,40 +34,6 @@
 
 #ifdef ASSEMBLER
 
-/* Define an entry point visible from C.  */
-#define	ENTRY(name)							      \
-  .globl name;								      \
-  .type name, @function;						      \
-  .align 4;								      \
-  C_LABEL(name)								      \
-  CALL_MCOUNT
-
-#undef END
-#define END(name) .size name, . - 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 PIC
-#define JUMPTARGET(name)	name##@PLTPC
-#else
-#define JUMPTARGET(name)	name
-#endif
-
-/* 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
-
 /* Linux uses a negative return value to indicate syscall errors, unlike
    most Unices, which use the condition codes' carry flag.
 
@@ -76,10 +43,11 @@
    for a real error by making sure the value in %d0 is a real error
    number.  Linus said he will make sure the no syscall returns a value
    in -1 .. -4095 as a valid result so we can savely test with -4095.  */
+#undef PSEUDO
 #define	PSEUDO(name, syscall_name, args)				      \
   .text;								      \
   ENTRY (name)								      \
-    DO_CALL (&SYS_ify (syscall_name), args);				      \
+    DO_CALL (syscall_name, args);					      \
     cmp.l &-4095, %d0;							      \
     jcc syscall_error
 
@@ -93,9 +61,6 @@
 #ifdef _LIBC_REENTRANT
 #define SYSCALL_ERROR_HANDLER						      \
 syscall_error:								      \
-    move.l (errno@GOTPC, %pc), %a0;					      \
-    neg.l %d0;								      \
-    move.l %d0, (%a0);							      \
     move.l %d0, -(%sp);							      \
     jbsr __errno_location@PLTPC;					      \
     move.l (%sp)+, (%a0);						      \
@@ -145,8 +110,8 @@ syscall_error:								      \
    speed is more important, we don't use movem.  Since %a0 and %a1 are
    scratch registers, we can use them for saving as well.  */
 
-#define DO_CALL(syscall, args)				      		      \
-    move.l syscall, %d0;						      \
+#define DO_CALL(syscall_name, args)			      		      \
+    move.l &SYS_ify(syscall_name), %d0;					      \
     DOARGS_##args							      \
     trap &0;								      \
     UNDOARGS_##args
-- 
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