On 04/29/12 04:40, Khem Raj wrote:
> On Fri, Apr 27, 2012 at 5:38 AM, Martin Ertsås <[email protected]> wrote:
>> Hi.
>>
>> I'm working on a pandaboard with OMAP4460. Were trying to use the newest
>> PVR drivers, which conforms to the result that arose from
>> https://wiki.linaro.org/OfficeofCTO/HardFloat/LinkerPathCallApr2012
>>
>> We have applied the patch at the bottom of that page gcc, and also a
>> patch for making eglibc make ld-linux-armhf, and load ld-linux-armhf
>> instead of ld-linux. Problem is, this gives us a kernel panic when it
>> tries to run init. Linking ld-linux.so.3 to ld-linux-armhf.so.3 does not
>> work, and we're kind of in the dark as to what is missing.
>>
>> We tried fixing this by renaming the toolchain to be
>> arm-none-linux-gnueabihf instead of arm-none-linux-gnueabi, as we heard
>> this might be a problem with hardfloats, but this needed a lot of extra
>> patches, and some patchwork on other packages like openssl and shadow.
>>
>> My question is, are there any ongoing plans to fix this, and make sure
>> that if we have set hard float we make ld-linux-armhf in openembedded?
>>
>> For the record we are using eglibc2.15 and gcc4.6 from openembedded-core.
> would you show the patches so I can take a look what you did and whats going
> on
Sure, the patches are attached.
>> Best regards
>> Martin Ertsaas
>>
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--- a/ports/sysdeps/arm/shlib-versions 2011-05-10 09:49:03.000000000 -0600
+++ b/ports/sysdeps/arm/shlib-versions 2012-04-13 22:52:46.790815748 -0600
@@ -1,4 +1,4 @@
arm.*-.*-linux-gnueabi.* DEFAULT GLIBC_2.4
-arm.*-.*-linux-gnueabi.* ld=ld-linux.so.3
+arm.*-.*-linux-gnueabi.* ld=ld-linux-armhf.so.3
arm.*-.*-linux.* ld=ld-linux.so.2
--- a/elf/dl-load.c 2012-04-14 12:11:37.000000000 +0000
+++ b/elf/dl-load.c 2012-04-15 00:39:36.558765502 +0000
@@ -2086,10 +2086,13 @@
soname = ((const char *) D_PTR (l, l_info[DT_STRTAB])
+ l->l_info[DT_SONAME]->d_un.d_val);
if (strcmp (name, soname) != 0)
+#ifdef __arm__
+ if (strcmp(name, "ld-linux.so.3") || strcmp(soname, "ld-linux-armhf.so.3"))
+#endif
continue;
/* We have a match on a new name -- cache it. */
- add_name_to_object (l, soname);
+ add_name_to_object (l, name);
l->l_soname_added = 1;
}
# DP: For ARM hard float, set the dynamic linker to
# DP: /lib/ld-linux-armhf.so.3.
diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index 80bd825..8c9d2e7 100644
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -62,7 +62,11 @@
/* Use ld-linux.so.3 so that it will be possible to run "classic"
GNU/Linux binaries on an EABI system. */
#undef GLIBC_DYNAMIC_LINKER
-#define GLIBC_DYNAMIC_LINKER SYSTEMLIBS_DIR "ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "/lib/ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER_HARD_FLOAT "/lib/ld-linux-armhf.so.3"
+#define GLIBC_DYNAMIC_LINKER \
+ "%{mfloat-abi=hard:" GLIBC_DYNAMIC_LINKER_HARD_FLOAT "} \
+ %{!mfloat-abi=hard:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "}"
/* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
use the GNU/Linux version, not the generic BPABI version. */
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