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patches/glibc/2.6.1/130-i686-assembler.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:43:07 2011 +0200 (2011-07-17)
changeset 2893 a8a65758664f
parent 744 4bf8448536d5
permissions -rw-r--r--
cc/gcc: do not use the core pass-2 to build the baremetal compiler

In case we build a baremetal compiler, use the standard passes:
- core_cc is used to build the C library;
- as such, it is meant to run on build, not host;
- the final compiler is meant to run on host;

As the current final compiler step can not build a baremetal compiler,
call the core backend from the final step.

NB: Currently, newlib is built during the start_files pass, so we have
to have a core compiler by then... Once we can build the baremetal
compiler from the final cc step, then we can move the newlib build to
the proper step, and then get rid of the core pass-1 static compiler...

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 

     7 

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

     9 ===================================================================

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

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

    12 @@ -29,6 +29,10 @@

    13  #include <dl-sysdep.h>

    14  #include <tls.h>

    15  

    16 +#if defined __i686 && defined __ASSEMBLER__

    17 +#undef __i686

    18 +#define __i686 __i686

    19 +#endif

    20  

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

    22  	/usr/include/asm/unistd.h

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

    24 ===================================================================

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

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

    27 @@ -45,6 +45,11 @@

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

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

    30  

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

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

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

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

    35 +

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

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

    38
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