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patches/glibc/2.3.6/160-sh-memset.patch
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:47:16 2010 +0200 (2010-07-29)
changeset 2045 fdaa6c7f6dea
parent 402 197e1b49586e
permissions -rw-r--r--
cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net> 
     1 From:

     2 	http://sources.redhat.com/ml/libc-alpha/2005-07/msg00051.html

     3 	http://sources.redhat.com/ml/crossgcc/2005-10/msg00035.html

     4 

     5 Message-ID: <434576E1.6020305@sscd.de>

     6 Date: Thu, 06 Oct 2005 21:11:29 +0200

     7 From: Alexander Sieb <sieb at sscd dot de>

     8 To: crossgcc at sourceware dot org

     9 Subject: Crosstool sh4-linux-gcc-4.0.2-glibc-2.3.5 patches

    10 

    11 On sh[34]-linux, memset function does not work if 2nd argument is negative

    12 and 3rd argument is greater than 12.

    13 for example, memset(ptr, "\xda", 20) sets 0xff instead of 0xda.

    14  

    15 Attached patch fixes this problem.

    16  

    17 	* sysdeps/sh/memset.S (memset): Correct 2nd argument handling.

    18  

    19 --- glibc-2.3.5.old/sysdeps/sh/memset.S	29 Apr 2003 22:47:18 -0000	1.4

    20 +++ glibc-2.3.5/sysdeps/sh/memset.S	23 Jul 2005 08:37:21 -0000

    21 @@ -28,6 +28,7 @@ ENTRY(memset)

    22  	bt.s	L_byte_loop_init

    23  	mov	r4,r7

    24  

    25 +	extu.b	r5,r5

    26  	swap.b	r5,r1

    27  	or	r1,r5

    28 	swap.w	r5,r1

    29 

    30 Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
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