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patches/glibc/2.7/130-i686-assembler.patch
author Cody Schafer <dev@codyps.com>
Fri May 09 19:13:49 2014 -0700 (2014-05-09)
changeset 3312 4876ff97e039
parent 744 4bf8448536d5
permissions -rw-r--r--
cc/gcc: allow CC_EXTRA_CONFIG_ARRAY on baremetal

The final bare-metal compiler is built using the core backend.
Currently the core uses the CC_CORE_EXTRA_CONFIG_ARRAY variable.

While this works as supposed to, this can leave the user puzzled
in the menuconfig, since all he can see is the core options, not
the final options.

Only show the core options if any of the core passes are needed,
and use the final options in the core-backend if we're issuing
the bare-metal compiler.

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: hide core options if no core pass needed;
use final option in core backend if issuing the bare-metal compiler]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <22181e546ba746202489.1399688067@localhost>
Patchwork-Id: 347586 
     1 If gcc is configured to generate i686 code or better by default (like

     2 when using the --with-arch=pentium3 configure option), then the __i686

     3 macro will always be defined automatically and thus screw up the

     4 compilation of some .S files.

     5 

     6 http://bugs.gentoo.org/131108

     7 http://sourceware.org/ml/libc-alpha/2006-04/msg00090.html

     8 

     9 2006-04-25  Mike Frysinger  <vapier@gentoo.org>

    10 

    11 	* sysdeps/i386/sysdep.h (__i686): Undefine.

    12 

    13 Index: glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h

    14 ===================================================================

    15 --- glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h	(revision 1469)

    16 +++ glibc-2.4/sysdeps/unix/sysv/linux/i386/sysdep.h	(working copy)

    17 @@ -29,6 +29,10 @@

    18  #include <dl-sysdep.h>

    19  #include <tls.h>

    20 

    21 +#if defined __i686 && defined __ASSEMBLER__

    22 +#undef __i686

    23 +#define __i686 __i686

    24 +#endif

    25 

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

    27  	/usr/include/asm/unistd.h

    28 Index: glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c

    29 ===================================================================

    30 --- glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c	(revision 1469)

    31 +++ glibc-2.4/nptl/sysdeps/pthread/pt-initfini.c	(working copy)

    32 @@ -45,6 +45,11 @@

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

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

    35 

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

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

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

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

    40 +

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

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

    43
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