On 2012/05/11 18:48:40, carrot wrote:
Please add ChangeLog and the trunk patch revision.
Thanks.
Trunk patch revision is 186859.
ChangeLog entry added.
==== Patch started.
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2f85855..588fa04 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2012-05-11 Han Shen <shen...@google.com>
+
+ Backport from mainline.
+ 2012-04-26 Michael Hope <michael.h...@linaro.org>
+ Richard Earnshaw <rearn...@arm.com>
+
+ * config/arm/linux-eabi.h (GLIBC_DYNAMIC_LINKER_SOFT_FLOAT): Define.
+ (GLIBC_DYNAMIC_LINKER_HARD_FLOAT): Define.
+ (GLIBC_DYNAMIC_LINKER_DEFAULT): Define.
+ (GLIBC_DYNAMIC_LINKER): Redefine to use the hard float path.
+
2012-04-30 Uros Bizjak <ubiz...@gmail.com>
Backport from mainline
diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index 3a32188..58d06c2 100644
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -32,7 +32,8 @@
while (false)
/* We default to a soft-float ABI so that binaries can run on all
- target hardware. */
+ target hardware. If you override this to use the hard-float ABI
then
+ change the setting of GLIBC_DYNAMIC_LINKER_DEFAULT as well. */
#undef TARGET_DEFAULT_FLOAT_ABI
#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
@@ -59,10 +60,26 @@
#undef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
-/* Use ld-linux.so.3 so that it will be possible to run "classic"
- GNU/Linux binaries on an EABI system. */
+/* GNU/Linux on ARM currently supports three dynamic linkers:
+ - ld-linux.so.2 - for the legacy ABI
+ - ld-linux.so.3 - for the EABI-derived soft-float ABI
+ - ld-linux-armhf.so.3 - for the EABI-derived hard-float ABI.
+ All the dynamic linkers live in /lib.
+ We default to soft-float, but this can be overridden by changing
both
+ GLIBC_DYNAMIC_LINKER_DEFAULT and TARGET_DEFAULT_FLOAT_ABI. */
+
#undef GLIBC_DYNAMIC_LINKER
-#define GLIBC_DYNAMIC_LINKER RUNTIME_ROOT_PREFIX "/lib/ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER_SOFT_FLOAT \
+ RUNTIME_ROOT_PREFIX "/lib/ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER_HARD_FLOAT \
+ RUNTIME_ROOT_PREFIX "/lib/ld-linux-armhf.so.3"
+#define GLIBC_DYNAMIC_LINKER_DEFAULT \
+ RUNTIME_ROOT_PREFIX GLIBC_DYNAMIC_LINKER_SOFT_FLOAT
+
+#define GLIBC_DYNAMIC_LINKER \
+ "%{mfloat-abi=hard:" GLIBC_DYNAMIC_LINKER_HARD_FLOAT "} \
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
/* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
use the GNU/Linux version, not the generic BPABI version. */
http://codereview.appspot.com/6206055/
