[PATCH 4/13] arm musl support

On behalf of szabolcs.nagy@arm.com

2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>

	* config/arm/linux-eabi.h (MUSL_DYNAMIC_LINKER): Define.

From-SVN: r223749

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fa6ce5cd08b4941f1371dde94701704094f3db3e..b496476e7124b3c05908377dfba9532d4e3747b3 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+       * config/arm/linux-eabi.h (MUSL_DYNAMIC_LINKER): Define.
+
 2015-05-27  Martin Liska  <mliska@suse.cz>
 
        * Makefile.in: Add additional dependencies related to memory report

diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
index 2cf3ca77170964918355962c652be7a863361adb..d51376fc3cbbed9253ae0bc81ff639a04a4c57ee 100644 (file)
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -77,6 +77,23 @@
     %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
     %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
 
+/* For ARM musl currently supports four dynamic linkers:
+   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
+   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
+   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
+   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
+   musl does not support the legacy OABI mode.
+   All the dynamic linkers live in /lib.
+   We default to soft-float, EL. */
+#undef  MUSL_DYNAMIC_LINKER
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
+#endif
+#define MUSL_DYNAMIC_LINKER \
+  "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+
 /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
    use the GNU/Linux version, not the generic BPABI version.  */
 #undef  LINK_SPEC