patches/glibc/ports-2.10.1/630-mips_shn_undef-hack.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 	Hack from Debian to hopefully get sandbox working on mips
     2 
     3 <`Kumba> ths: given the SHN_UNDEF thing is a hack, what's the preferred solution?
     4 <ths> For fakeroot the simplest trigger is "fakeroot file /bin/ls".
     5 <ths> `Kumba: I haven't found a better one yet.
     6 <ths> Probably marker symbols around the stub section, and then exclude it from the link map.
     7 <ths> This needs a ld change.
     8 
     9 diff -durN glibc-2.10.1.orig/elf/do-lookup.h glibc-2.10.1/elf/do-lookup.h
    10 --- glibc-2.10.1.orig/elf/do-lookup.h	2009-03-30 23:14:32.000000000 +0200
    11 +++ glibc-2.10.1/elf/do-lookup.h	2009-11-13 00:51:36.000000000 +0100
    12 @@ -248,6 +248,12 @@
    13  		}
    14  	      /* FALLTHROUGH */
    15  	    case STB_GLOBAL:
    16 +#ifdef __mips__
    17 +	      /* HACK: MIPS marks its lazy evaluation stubs with SHN_UNDEF
    18 +		 symbols, we skip them. */
    19 +	      if (sym->st_shndx == SHN_UNDEF)
    20 +		break;
    21 +#endif
    22  	      /* Global definition.  Just what we need.  */
    23  	      result->s = sym;
    24  	      result->m = (struct link_map *) map;