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patches/glibc/2.12.1/900-march-i686.patch
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 2007-02-15  Khem Raj  <kraj@xxxxxxxxxx>

     2 

     3        * sysdeps/unix/sysv/linux/i386/sysdep.h: Re-define __i686.

     4        * nptl/sysdeps/pthread/pt-initfini.c: Ditto.

     5 

     6 diff -urN glibc-2.12.1.orig/nptl/sysdeps/pthread/pt-initfini.c glibc-2.12.1/nptl/sysdeps/pthread/pt-initfini.c

     7 --- glibc-2.12.1.orig/nptl/sysdeps/pthread/pt-initfini.c	2009-10-30 18:17:08.000000000 +0100

     8 +++ glibc-2.12.1/nptl/sysdeps/pthread/pt-initfini.c	2010-12-30 11:36:19.858708534 +0100

     9 @@ -45,6 +45,11 @@

    10  /* Embed an #include to pull in the alignment and .end directives. */

    11  asm ("\n#include \"defs.h\"");

    12  

    13 +asm ("\n#if defined __i686 && defined __ASSEMBLER__");

    14 +asm ("\n#undef __i686");

    15 +asm ("\n#define __i686 __i686");

    16 +asm ("\n#endif");

    17 +

    18  /* The initial common code ends here. */

    19  asm ("\n/*@HEADER_ENDS*/");

    20  

    21 diff -urN glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/sysdep.h glibc-2.12.1/sysdeps/unix/sysv/linux/i386/sysdep.h

    22 --- glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/sysdep.h	2009-10-30 18:17:08.000000000 +0100

    23 +++ glibc-2.12.1/sysdeps/unix/sysv/linux/i386/sysdep.h	2010-12-30 11:36:19.858708534 +0100

    24 @@ -29,6 +29,10 @@

    25  #include <dl-sysdep.h>

    26  #include <tls.h>

    27  

    28 +#if defined __i686 && defined __ASSEMBLER__

    29 +#undef __i686

    30 +#define __i686 __i686

    31 +#endif

    32  

    33  /* For Linux we can use the system call table in the header file

    34  	/usr/include/asm/unistd.h
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