microblaze: remove unused dead code

These files are not used, no regression found while
running the testsuite.

libc/sysdeps/linux/microblaze/Makefile.arch

@@ -5,8 +5,5 @@
 #
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
-CSRC-y := clone.c fixdfsi.c
-
+CSRC-y := clone.c
 SSRC-y := setjmp.S __longjmp.S vfork.S
-
-ARCH_HEADERS := floatlib.h

libc/sysdeps/linux/microblaze/crt0.S

@@ -1,52 +0,0 @@
-/*
- * libc/sysdeps/linux/microblaze/crt0.S -- Initial program entry point for linux/microblaze
- *
- *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
- *  Copyright (C) 2001,2002  NEC Corporation
- *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
- *
- * This file is subject to the terms and conditions of the GNU Lesser
- * General Public License.  See the file COPYING.LIB in the main
- * directory of this archive for more details.
- *
- * Written by Miles Bader <miles@gnu.org>
- */
-
-#include <clinkage.h>
-
-/* Upon entry, the stack contains the following data:
-	argc, argv[0], ..., argv[argc-1], 0, envp[0], ..., 0
-*/
-
-	.text
-C_ENTRY(_start):
-	lw	r5, r0, r1	/* Arg 0: argc */
-
-	addi	r6, r1, 4	/* Arg 1: argv */
-
-				/* Arg 2: envp */
-	addi	r3, r5, 1	/* skip argc elements to get envp start */
-				/* ...plus the NULL at the end of argv */
-	add	r3, r3, r3	/* Make word offset */
-	add	r3, r3, r3
-	add	r7, r6, r3	/* add to argv to get offset */
-
-	/* tail-call uclibc's startup routine */
-	brid	C_SYMBOL_NAME(__uClibc_main)
-	nop
-
-
-/* Stick in a dummy reference to `main', so that if an application
-   is linking when the `main' function is in a static library (.a)
-   we can be sure that `main' actually gets linked in.  */
-L_dummy_main_reference:
-	.long	C_SYMBOL_NAME(main)
-
-/* Define a symbol for the first piece of initialized data.  */
-	.data
-	.globl __data_start
-__data_start:
-	.long 0
-	.weak data_start
-	data_start = __data_start
-

libc/sysdeps/linux/microblaze/fixdfsi.c

@@ -1,85 +0,0 @@
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc.  All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact.  So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented.  This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c.  It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
---> Double precision floating support added by James Carlson on 20 April 1998.
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-**                  -- fixed problems with adding and subtracting zero
-**                  -- fixed rounding in truncdfsf2
-**                  -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386).  Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic.  I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply.  I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference.  Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-#include "floatlib.h"
-
-/* convert double to int */
-long
-__fixdfsi (double a1)
-{
-  register union double_long dl1;
-  register int exp;
-  register long l;
-
-  dl1.d = a1;
-
-  if (!dl1.l.upper && !dl1.l.lower)
-    return (0);
-
-  exp = EXPD (dl1) - EXCESSD - 31;
-  l = MANTD (dl1);
-
-  if (exp > 0)
-      return SIGND(dl1) ? (1<<31) : ((1ul<<31)-1);
-
-  /* shift down until exp = 0 or l = 0 */
-  if (exp < 0 && exp > -32 && l)
-    l >>= -exp;
-  else
-    return (0);
-
-  return (SIGND (dl1) ? -l : l);
-}

libc/sysdeps/linux/microblaze/floatlib.h

@@ -1,140 +0,0 @@
-/*
-** libgcc support for software floating point.
-** Copyright (C) 1991 by Pipeline Associates, Inc.  All rights reserved.
-** Permission is granted to do *anything* you want with this file,
-** commercial or otherwise, provided this message remains intact.  So there!
-** I would appreciate receiving any updates/patches/changes that anyone
-** makes, and am willing to be the repository for said changes (am I
-** making a big mistake?).
-
-Warning! Only single-precision is actually implemented.  This file
-won't really be much use until double-precision is supported.
-
-However, once that is done, this file might eventually become a
-replacement for libgcc1.c.  It might also make possible
-cross-compilation for an IEEE target machine from a non-IEEE
-host such as a VAX.
-
-If you'd like to work on completing this, please talk to rms@gnu.ai.mit.edu.
-
---> Double precision floating support added by James Carlson on 20 April 1998.
-
-**
-** Pat Wood
-** Pipeline Associates, Inc.
-** pipeline!phw@motown.com or
-** sun!pipeline!phw or
-** uunet!motown!pipeline!phw
-**
-** 05/01/91 -- V1.0 -- first release to gcc mailing lists
-** 05/04/91 -- V1.1 -- added float and double prototypes and return values
-**                  -- fixed problems with adding and subtracting zero
-**                  -- fixed rounding in truncdfsf2
-**                  -- fixed SWAP define and tested on 386
-*/
-
-/*
-** The following are routines that replace the libgcc soft floating point
-** routines that are called automatically when -msoft-float is selected.
-** The support single and double precision IEEE format, with provisions
-** for byte-swapped machines (tested on 386).  Some of the double-precision
-** routines work at full precision, but most of the hard ones simply punt
-** and call the single precision routines, producing a loss of accuracy.
-** long long support is not assumed or included.
-** Overall accuracy is close to IEEE (actually 68882) for single-precision
-** arithmetic.  I think there may still be a 1 in 1000 chance of a bit
-** being rounded the wrong way during a multiply.  I'm not fussy enough to
-** bother with it, but if anyone is, knock yourself out.
-**
-** Efficiency has only been addressed where it was obvious that something
-** would make a big difference.  Anyone who wants to do this right for
-** best speed should go in and rewrite in assembler.
-**
-** I have tested this only on a 68030 workstation and 386/ix integrated
-** in with -msoft-float.
-*/
-
-#ifndef __FLOAT_LIB_H__
-#define __FLOAT_LIB_H__
-/* the following deal with IEEE single-precision numbers */
-#define EXCESS		126
-#define SIGNBIT		0x80000000
-#define HIDDEN		(1 << 23)
-#define SIGN(fp)	((fp) & SIGNBIT)
-#define EXP(fp)		(((fp) >> 23) & 0xFF)
-#define MANT(fp)	(((fp) & 0x7FFFFF) | HIDDEN)
-#define PACK(s,e,m)	((s) | ((e) << 23) | (m))
-
-/* the following deal with IEEE double-precision numbers */
-#define EXCESSD		1022
-#define HIDDEND		(1 << 20)
-#define EXPD(fp)	(((fp.l.upper) >> 20) & 0x7FF)
-#define SIGND(fp)	((fp.l.upper) & SIGNBIT)
-#define MANTD(fp)	(((((fp.l.upper) & 0xFFFFF) | HIDDEND) << 10) | \
-				(fp.l.lower >> 22))
-#define HIDDEND_LL	((long long)1 << 52)
-#define MANTD_LL(fp)	((fp.ll & (HIDDEND_LL-1)) | HIDDEND_LL)
-#define PACKD_LL(s,e,m)	(((long long)((s)+((e)<<20))<<32)|(m))
-
-/* define SWAP for 386/960 reverse-byte-order brain-damaged CPUs */
-union double_long {
-    double d;
-#ifdef SWAP
-    struct {
-      unsigned long lower;
-      long upper;
-    } l;
-#else
-    struct {
-      long upper;
-      unsigned long lower;
-    } l;
-#endif
-    long long ll;
-};
-
-union float_long
-  {
-    float f;
-    long l;
-  };
-
-#endif
-
-/* Functions defined in different files */
-
-float __addsf3 (float, float);
-float __subsf3 (float, float);
-long __cmpsf2 (float, float);
-float __mulsf3 (float, float);
-float __divsf3 (float, float);
-double __floatsidf (register long);
-double __floatdidf (register long long);
-float __floatsisf (register long );
-float __floatdisf (register long long );
-float __negsf2 (float);
-double __negdf2 (double);
-double __extendsfdf2 (float);
-float __truncdfsf2 (double);
-long __cmpdf2 (double, double);
-long __fixsfsi (float);
-long __fixdfsi (double);
-long long __fixdfdi (double);
-unsigned long __fixunsdfsi (double);
-unsigned long long __fixunsdfdi (double);
-double __adddf3 (double, double);
-double __subdf3 (double, double);
-double __muldf3 (double, double);
-double __divdf3 (double, double);
-int __gtdf2 (double, double);
-int __gedf2 (double, double);
-int __ltdf2 (double, double);
-int __ledf2 (double, double);
-int __eqdf2 (double, double);
-int __nedf2 (double, double);
-int __gtsf2 (float, float);
-int __gesf2 (float, float);
-int __ltsf2 (float, float);
-int __lesf2 (float, float);
-int __eqsf2 (float, float);
-int __nesf2 (float, float);