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| author | Khem Raj <raj.khem@gmail.com> | 2012-04-30 15:55:34 -0700 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2012-05-24 08:34:48 +0100 |
| commit | a0d9e602a778feab2201a0643fb7d555b71017b9 (patch) | |
| tree | 218ce9d41b8aa350411bc746f1d9ebd1990139ae /meta/recipes-devtools/gcc/gcc-4.7 | |
| parent | e6333825c3482a559a0c0499e17f8f48d3042ddf (diff) | |
| download | openembedded-core-a0d9e602a778feab2201a0643fb7d555b71017b9.tar.gz openembedded-core-a0d9e602a778feab2201a0643fb7d555b71017b9.tar.bz2 openembedded-core-a0d9e602a778feab2201a0643fb7d555b71017b9.zip | |
gcc-4.7: Add knowledge about arm hf dynamic loader
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.7')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.7/arm-hard-float-loader.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.7/arm-hard-float-loader.patch b/meta/recipes-devtools/gcc/gcc-4.7/arm-hard-float-loader.patch new file mode 100644 index 0000000000..dfa0d191f3 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.7/arm-hard-float-loader.patch @@ -0,0 +1,48 @@ +This patch is still being discussed by probably is almost +final version. We add the OE notion of multilib on top + +Upstream-Status: Backport [ adapted ] + +Signed-off-by: Khem Raj <raj.khem@gmail.com> + +Index: gcc-4_7-branch/gcc/config/arm/linux-eabi.h +=================================================================== +--- gcc-4_7-branch.orig/gcc/config/arm/linux-eabi.h 2012-04-30 15:28:31.891863845 -0700 ++++ gcc-4_7-branch/gcc/config/arm/linux-eabi.h 2012-04-30 15:37:11.531888994 -0700 +@@ -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 +60,23 @@ + #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 SYSTEMLIBS_DIR "ld-linux.so.3" ++#define GLIBC_DYNAMIC_LINKER_SOFT_FLOAT SYSTEMLIBS_DIR "ld-linux.so.3" ++#define GLIBC_DYNAMIC_LINKER_HARD_FLOAT SYSTEMLIBS_DIR "ld-linux-armhf.so.3" ++#define GLIBC_DYNAMIC_LINKER_DEFAULT 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. */ |