patches/glibc/ports-2.10.1/630-mips_shn_undef-hack.patch
author Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Wed Apr 07 09:18:20 2010 +0200 (2010-04-07)
changeset 1910 207ad430c254
permissions -rw-r--r--
Add basic support for the Blackfin architecture

For uClibc, the name of the Blackfin architecture is 'bfin'. Actually,
the naming of the architecture is quite messy: for toolchain tuples
and uClibc, it's bfin, but for the kernel, it's blackfin. We've
arbitraly choosen to name it "blackfin" in Crosstool-NG.

Add Blackfin-related uClibc patch to fix a build failure related to
fork() being used in unistd/daemon.c.

Yann E. MORIN:
Apply the patch to the kernel/linux build script to use 'linux'
in the noMMU tuples. See:
http://sourceware.org/ml/crossgcc/2010-04/msg00010.html
yann@1625
     1
	Hack from Debian to hopefully get sandbox working on mips
yann@1625
     2
yann@1625
     3
<`Kumba> ths: given the SHN_UNDEF thing is a hack, what's the preferred solution?
yann@1625
     4
<ths> For fakeroot the simplest trigger is "fakeroot file /bin/ls".
yann@1625
     5
<ths> `Kumba: I haven't found a better one yet.
yann@1625
     6
<ths> Probably marker symbols around the stub section, and then exclude it from the link map.
yann@1625
     7
<ths> This needs a ld change.
yann@1625
     8
yann@1625
     9
diff -durN glibc-2.10.1.orig/elf/do-lookup.h glibc-2.10.1/elf/do-lookup.h
yann@1625
    10
--- glibc-2.10.1.orig/elf/do-lookup.h	2009-03-30 23:14:32.000000000 +0200
yann@1625
    11
+++ glibc-2.10.1/elf/do-lookup.h	2009-11-13 00:51:36.000000000 +0100
yann@1625
    12
@@ -248,6 +248,12 @@
yann@1625
    13
 		}
yann@1625
    14
 	      /* FALLTHROUGH */
yann@1625
    15
 	    case STB_GLOBAL:
yann@1625
    16
+#ifdef __mips__
yann@1625
    17
+	      /* HACK: MIPS marks its lazy evaluation stubs with SHN_UNDEF
yann@1625
    18
+		 symbols, we skip them. */
yann@1625
    19
+	      if (sym->st_shndx == SHN_UNDEF)
yann@1625
    20
+		break;
yann@1625
    21
+#endif
yann@1625
    22
 	      /* Global definition.  Just what we need.  */
yann@1625
    23
 	      result->s = sym;
yann@1625
    24
 	      result->m = (struct link_map *) map;