main/gcc: unbreak libgcc on uclibc, update musl patches

- refresh all musl patches (gcc_cv_libc_provides_ssp detects now)
- add patch to fix the musl patch so that on uclibc we also use
  gcc_cv_target_dl_iterate_phdr since the sources was changed to
  use this instead of __GLIBC__ defines

3 files changed, 268 insertions, 235 deletions

diff --git a/main/gcc/APKBUILD b/main/gcc/APKBUILD
index 788350b3ef..864a66cde4 100644
--- a/main/gcc/APKBUILD
+++ b/main/gcc/APKBUILD
@@ -12,7 +12,7 @@ _cross=""
 	&& _cross="-$CTARGET"
 
 pkgname="$pkgname$_cross"
-pkgrel=4
+pkgrel=5
 pkgdesc="The GNU Compiler Collection"
 url="http://gcc.gnu.org"
 arch="all"
@@ -165,6 +165,7 @@ source="ftp://gcc.gnu.org/pub/gcc/releases/gcc-$pkgver/gcc-$pkgver.tar.bz2
 	gcc-4.6-pr32219.patch
 	gcc-4.8-dynamic-linker.patch
 	gcc-4.8-musl.patch
+	gcc-4.8-musl-fix-iteratephdr.patch
 	gcc-4.8-musl-libssp.patch
 	boehm-gc-uclibc.patch
 	boehm-gc-musl.patch
@@ -272,7 +273,6 @@ build() {
 		# alpine musl provides libssp_nonshared.a, so we don't need libssp either
 		_libc_configure="--disable-libssp --disable-libmudflap --disable-libsanitizer"
 		_symvers="--disable-symvers"
-		export gcc_cv_libc_provides_ssp=yes
 		export libat_cv_have_ifunc=no
 		;;
 	uclibc)
@@ -652,7 +652,8 @@ ab83248e10b2bf4b3d9240de0fefb52b  pt_gnu_eh_frame.patch
 6cc2385c5bbd6d0da6eaedd53c8bf547  uclibc-getipinfo.patch
 32e8e4c0e23ed8f5de95a591cb30f1da  gcc-4.6-pr32219.patch
 79d00ee1284fac5192456f7f7d3908aa  gcc-4.8-dynamic-linker.patch
-c45de4791c63d42731dc4c36a84b6717  gcc-4.8-musl.patch
+ae660a0cb265b3115cde8f7efb41f7cc  gcc-4.8-musl.patch
+6e5c32243a86ff35b7b47d18c95b31bd  gcc-4.8-musl-fix-iteratephdr.patch
 60de2c9f78f00b8b0ba5d24fb44ea592  gcc-4.8-musl-libssp.patch
 2c6cb49bb9bfd8b6e690222e66ccc901  boehm-gc-uclibc.patch
 ea2749b1337a5d850a8f463071cc4747  boehm-gc-musl.patch
@@ -686,7 +687,8 @@ da6bbb5dc654d5e1df8ecae5c9ebb56265426c405931f14f5878248b8c79f78d  51_all_libiber
 53184f842477569973c232dac7c85e71b0018cbe5c4962f95dd9e0273f42083e  uclibc-getipinfo.patch
 89207a8b62137a857ee2c43499d6b5247d37b530d1338844dbb330a6846b2ad2  gcc-4.6-pr32219.patch
 f3863b997acf8fdf5ad1d3626b41a8a0670b896505e9b7afb517916c7599fb1c  gcc-4.8-dynamic-linker.patch
-d3e3c305d5da95703f53d615f901912ada9395e3ccf3670435d28d5409dfa956  gcc-4.8-musl.patch
+847075eb79c94e062ab8fb566f3bbea007875e2fde6fe2ddf51a18e731796a67  gcc-4.8-musl.patch
+151c11c3303233e6ff06e27aa6dc889140bc46a7b5e4870587c40e37d36ede2c  gcc-4.8-musl-fix-iteratephdr.patch
 ce0168ce009d77ce5831cb71739675cad6d68283b6e57fa8f2e559d65502022d  gcc-4.8-musl-libssp.patch
 02751ccf223dcfc898c0ce2214cd0859d275e90b742f1a66e38db5c50f94b38c  boehm-gc-uclibc.patch
 6adcddbc9d52b4e39878155bc7ff0114c322e0f05c0c82dff8c06c7278313f73  boehm-gc-musl.patch
@@ -720,7 +722,8 @@ d08d7ead2de0429e5c9055d5b029ec2be9a8c821d22cecaf9b51f633652c493333f98963d9267fa2
 e3edf75df1f27af8771bd263e1bd607f6207c4eb5b2a5e11032577deba43ea201825e3b5008a720105f24e49d2821dd77a61c7ceba7ed91b3621c0dbd9292fc6  uclibc-getipinfo.patch
 9fc5e32f2573ae67b6cf22119d636d10a47c42718635bceff7d457a93a3f664ae1ed10e154f70964ba2d26b0de04f879a8c05de6411112760d40433373dd0a80  gcc-4.6-pr32219.patch
 db84b6582950378116723116be4f277881f7bdd05add216c58c2b86c0fb3a70abeb7798507a74a64b9b949d5b311167bd4df84a048d2d2d32f5836ea1d34c42e  gcc-4.8-dynamic-linker.patch
-42b05a87f8785d3dc4ba6c5cd8d1e7b5fb119aef9cb59523ac695b8c7c910edc7d428ea4f2f1080e1f53f990a8d6070d3f0025cc02b4418f230493b7672c94d6  gcc-4.8-musl.patch
+12871b62d31a8e524547f2f0b37e711bae027aaadc487d893f8dc4cef2c2fee09f5c558cd7e1d28e0c687bc3be0465d1088c5ef7b87e8ac43ac06d86dc455761  gcc-4.8-musl.patch
+b5b0210dfaccfe0b06f0a9090666b1fae2a3faa4140b7930146b29531f0da9beb1f2c1f7e7bc2bd29179f9fe05dc30e246e96220b8ff75a90f75e8350c9058a1  gcc-4.8-musl-fix-iteratephdr.patch
 701c79ea7b90e622facb16fc71902aec25c443e376d675fc3f07cd55eff7a6b95ca365b2c60fff1dad3c3dc02b96c4c2ebbb45e4d2895496137e060443ae3e79  gcc-4.8-musl-libssp.patch
 e1d6a450dfb40b134ad7f759c4c10174d2490b0093fe47cb33479245f26a3a8c54ebcf6255943c0ccfcb5095600d1c05e530baeed35609c8ffe75caac8e57c49  boehm-gc-uclibc.patch
 7db904f83546edb4f7e54d3eaa0a8ab3235bca69e03a35000f083d26626bff92713f73150935c89f51e47c952bf29c36ec7d2fc8fedcde38048975e3e590faf9  boehm-gc-musl.patch
diff --git a/main/gcc/gcc-4.8-musl-fix-iteratephdr.patch b/main/gcc/gcc-4.8-musl-fix-iteratephdr.patch
new file mode 100644
index 0000000000..b06597ec78
--- /dev/null
+++ b/main/gcc/gcc-4.8-musl-fix-iteratephdr.patch
@@ -0,0 +1,22 @@
+--- gcc-4.8.1/gcc/configure.ac.orig	2013-09-25 04:08:25.046595893 +0000
++++ gcc-4.8.1/gcc/configure.ac	2013-09-25 04:09:06.023263205 +0000
+@@ -4822,7 +4822,7 @@
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+-  *-linux-musl*)
++  *-linux-musl* | *-linux-uclibc* | *-linux-gnu*)
+     gcc_cv_target_dl_iterate_phdr=yes
+     ;;
+ esac
+--- gcc-4.8.1/gcc/configure.orig	2013-09-25 04:08:17.826596392 +0000
++++ gcc-4.8.1/gcc/configure	2013-09-25 04:09:24.393263387 +0000
+@@ -26923,7 +26923,7 @@
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+-  *-linux-musl*)
++  *-linux-musl* | *-linux-uclibc* | *-linux-gnu*)
+     gcc_cv_target_dl_iterate_phdr=yes
+     ;;
+ esac
diff --git a/main/gcc/gcc-4.8-musl.patch b/main/gcc/gcc-4.8-musl.patch
index 26f89eb68e..2d0934ea00 100644
--- a/main/gcc/gcc-4.8-musl.patch
+++ b/main/gcc/gcc-4.8-musl.patch
@@ -1,117 +1,34 @@
---- a/gcc/config/aarch64/aarch64-linux.h	2013-01-10 21:38:27.000000000 +0100
-+++ b/gcc/config/aarch64/aarch64-linux.h	2013-09-12 21:39:34.004829498 +0200
-@@ -21,7 +21,11 @@
- #ifndef GCC_AARCH64_LINUX_H
- #define GCC_AARCH64_LINUX_H
- 
-+/* The AArch64 port currently supports two dynamic linkers:
-+   - ld-linux-aarch64.so.1 - GLIBC dynamic linker
-+   - ld-musl-aarch64.so.1 - musl libc dynamic linker  */
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
- 
- #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
-    %{static:-Bstatic}				\
 # HG changeset patch
-# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
-Support for arm-linux-musl.
+# Parent f50bb54f331f73405131a30b4f353cfda1c70304
+Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
 
-diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
---- a/gcc/config/arm/linux-eabi.h	Thu Sep 19 07:11:38 2013 -0400
-+++ b/gcc/config/arm/linux-eabi.h	Thu Sep 19 08:56:47 2013 -0400
-@@ -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"
+diff -r f50bb54f331f libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host	Fri Mar 29 16:38:52 2013 -0400
++++ b/libstdc++-v3/configure.host	Fri Mar 29 16:41:10 2013 -0400
+@@ -264,6 +264,13 @@
+     os_include_dir="os/bsd/freebsd"
+     ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++    # check for musl by target
++    case "${host_os}" in
++      *-musl*)
++        os_include_dir="os/generic"
++        ;;
++      *)
 +
- /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
-    use the GNU/Linux version, not the generic BPABI version.  */
- #undef  LINK_SPEC
-diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
---- a/libitm/config/arm/hwcap.cc	Thu Sep 19 07:11:38 2013 -0400
-+++ b/libitm/config/arm/hwcap.cc	Thu Sep 19 08:56:47 2013 -0400
-@@ -40,7 +40,11 @@
- 
- #ifdef __linux__
- #include <unistd.h>
-+#ifdef __GLIBC__
- #include <sys/fcntl.h>
-+#else
-+#include <fcntl.h>
-+#endif
- #include <elf.h>
- 
- static void __attribute__((constructor))
-diff -r ef9a64dbe461 gcc/configure
---- a/gcc/configure	Thu Sep 19 09:37:33 2013 -0400
-+++ b/gcc/configure	Thu Sep 19 09:40:09 2013 -0400
-@@ -26764,11 +26764,12 @@
-          gcc_cv_libc_provides_ssp=yes
-       fi
- 	;;
--       *-*-gnu*)
-+       *-*-gnu* | *-*-musl*)
- 	 # Avoid complicated tests (see
- 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- 	 # simply assert that glibc does provide this, which is true for all
- 	 # realistically usable GNU/Hurd configurations.
-+	 # All supported versions of musl provide it as well
- 	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-darwin* | *-*-freebsd*)
- 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
-@@ -26851,6 +26852,9 @@
-       gcc_cv_target_dl_iterate_phdr=no
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
+     elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+       os_include_dir="os/gnu-linux"
      fi
      ;;
-+  *-linux-musl*)
-+    gcc_cv_target_dl_iterate_phdr=yes
++
++    esac
 +    ;;
- esac
- 
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
-diff -r ef9a64dbe461 gcc/configure.ac
---- a/gcc/configure.ac	Thu Sep 19 09:37:33 2013 -0400
-+++ b/gcc/configure.ac	Thu Sep 19 09:40:09 2013 -0400
-@@ -4747,11 +4747,12 @@
-          gcc_cv_libc_provides_ssp=yes
-       fi]
- 	;;
--       *-*-gnu*)
-+       *-*-gnu* | *-*-musl*)
- 	 # Avoid complicated tests (see
- 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
- 	 # simply assert that glibc does provide this, which is true for all
- 	 # realistically usable GNU/Hurd configurations.
-+	 # All supported versions of musl provide it as well
- 	 gcc_cv_libc_provides_ssp=yes;;
-        *-*-darwin* | *-*-freebsd*)
- 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
-@@ -4817,6 +4818,9 @@
-       gcc_cv_target_dl_iterate_phdr=no
-     fi
+   hpux*)
+     os_include_dir="os/hpux"
      ;;
-+  *-linux-musl*)
-+    gcc_cv_target_dl_iterate_phdr=yes
-+    ;;
- esac
- GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
- if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
 # HG changeset patch
 # Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
 Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
@@ -340,6 +257,111 @@ diff -r 2b94537ce249 libgomp/config/posix/time.c
  #include "libgomp.h"
  #include <unistd.h>
  #if TIME_WITH_SYS_TIME
+diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:53:05 2013 -0400
++++ b/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:57:08 2013 -0400
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
+ 
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+-	|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && defined(__BIONIC__)
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && defined(__FreeBSD__) && __FreeBSD__ >= 7
+-# define ElfW __ElfN
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && defined(__OpenBSD__)
+-# define ElfW(type) Elf_##type
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+-    && defined(TARGET_DL_ITERATE_PHDR) \
+-    && defined(__sun__) && defined(__svr4__)
+-# define USE_PT_GNU_EH_FRAME
++# ifdef __OpenBSD__
++#  define ElfW(type) Elf_##typ
++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
++#  define ElfW __ElfN
++# endif
+ #endif
+ 
+ #if defined(USE_PT_GNU_EH_FRAME)
+diff -r 75d9c38318a7 gcc/configure
+--- a/gcc/configure	Tue Sep 24 06:52:49 2013 -0400
++++ b/gcc/configure	Tue Sep 24 06:54:33 2013 -0400
+@@ -26736,6 +26736,9 @@
+ else
+   gcc_cv_libc_provides_ssp=no
+     case "$target" in
++       *-*-musl*)
++         # All versions of musl provide stack protector
++	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -26769,6 +26772,7 @@
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
++	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -26851,6 +26855,9 @@
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
++  *-linux-musl*)
++    gcc_cv_target_dl_iterate_phdr=yes
++    ;;
+ esac
+ 
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r 75d9c38318a7 gcc/configure.ac
+--- a/gcc/configure.ac	Tue Sep 24 06:52:49 2013 -0400
++++ b/gcc/configure.ac	Tue Sep 24 06:54:33 2013 -0400
+@@ -4719,6 +4719,9 @@
+       gcc_cv_libc_provides_ssp,
+       [gcc_cv_libc_provides_ssp=no
+     case "$target" in
++       *-*-musl*)
++         # All versions of musl provide stack protector
++	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       [# glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -4752,6 +4755,7 @@
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
++	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -4817,6 +4821,9 @@
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
++  *-linux-musl*)
++    gcc_cv_target_dl_iterate_phdr=yes
++    ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
 # HG changeset patch
 # Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
 Get rid of ever-broken fixincludes on musl.
@@ -359,36 +381,106 @@ diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
  	#  THEN create a no-op fixer and exit
  	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
 # HG changeset patch
-# Parent f50bb54f331f73405131a30b4f353cfda1c70304
-Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
+# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
+Support for i386-linux-musl and x86_64-linux-musl.
 
-diff -r f50bb54f331f libstdc++-v3/configure.host
---- a/libstdc++-v3/configure.host	Fri Mar 29 16:38:52 2013 -0400
-+++ b/libstdc++-v3/configure.host	Fri Mar 29 16:41:10 2013 -0400
-@@ -264,6 +264,13 @@
-     os_include_dir="os/bsd/freebsd"
-     ;;
-   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
-+    # check for musl by target
-+    case "${host_os}" in
-+      *-musl*)
-+        os_include_dir="os/generic"
-+        ;;
-+      *)
+diff -r 3ea10cd626cb gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h	Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux.h	Fri Mar 29 16:41:20 2013 -0400
+@@ -21,3 +21,4 @@
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r 3ea10cd626cb gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h	Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux64.h	Fri Mar 29 16:41:20 2013 -0400
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
 +
-     if [ "$uclibc" = "yes" ]; then
-       os_include_dir="os/uclibc"
-     elif [ "$bionic" = "yes" ]; then
-@@ -272,6 +279,9 @@
-       os_include_dir="os/gnu-linux"
-     fi
-     ;;
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h	Fri Mar 29 16:41:17 2013 -0400
++++ b/libitm/config/linux/x86/tls.h	Fri Mar 29 16:41:20 2013 -0400
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+ 
+ #endif // LIBITM_X86_TLS_H
+# HG changeset patch
+# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
+Support for arm-linux-musl.
+
+diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h	Thu Sep 19 07:11:38 2013 -0400
++++ b/gcc/config/arm/linux-eabi.h	Thu Sep 19 08:56:47 2013 -0400
+@@ -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"
 +
-+    esac
-+    ;;
-   hpux*)
-     os_include_dir="os/hpux"
-     ;;
+ /* 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
+diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc	Thu Sep 19 07:11:38 2013 -0400
++++ b/libitm/config/arm/hwcap.cc	Thu Sep 19 08:56:47 2013 -0400
+@@ -40,7 +40,11 @@
+ 
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
 # HG changeset patch
 # Parent 4618ad6f036f1e944a5262ae5875dcdf62c41f8b
 Support for mips-linux-musl.
@@ -515,101 +607,17 @@ diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
    { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
    { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
    { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
-diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
---- a/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:53:05 2013 -0400
-+++ b/libgcc/unwind-dw2-fde-dip.c	Sat Jul 27 22:57:08 2013 -0400
-@@ -46,33 +46,13 @@
- #include "unwind-compat.h"
- #include "gthr.h"
- 
--#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
--    && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
--	|| (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
-+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
- # define USE_PT_GNU_EH_FRAME
--#endif
--
--#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
--    && defined(__BIONIC__)
--# define USE_PT_GNU_EH_FRAME
--#endif
--
--#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
--    && defined(__FreeBSD__) && __FreeBSD__ >= 7
--# define ElfW __ElfN
--# define USE_PT_GNU_EH_FRAME
--#endif
--
--#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
--    && defined(__OpenBSD__)
--# define ElfW(type) Elf_##type
--# define USE_PT_GNU_EH_FRAME
--#endif
--
--#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
--    && defined(TARGET_DL_ITERATE_PHDR) \
--    && defined(__sun__) && defined(__svr4__)
--# define USE_PT_GNU_EH_FRAME
-+# ifdef __OpenBSD__
-+#  define ElfW(type) Elf_##typ
-+# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
-+#  define ElfW __ElfN
-+# endif
- #endif
- 
- #if defined(USE_PT_GNU_EH_FRAME)
-# HG changeset patch
-# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
-Support for i386-linux-musl and x86_64-linux-musl.
-
-diff -r 3ea10cd626cb gcc/config/i386/linux.h
---- a/gcc/config/i386/linux.h	Fri Mar 29 16:41:17 2013 -0400
-+++ b/gcc/config/i386/linux.h	Fri Mar 29 16:41:20 2013 -0400
-@@ -21,3 +21,4 @@
- 
- #define GNU_USER_LINK_EMULATION "elf_i386"
- #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
-+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
-diff -r 3ea10cd626cb gcc/config/i386/linux64.h
---- a/gcc/config/i386/linux64.h	Fri Mar 29 16:41:17 2013 -0400
-+++ b/gcc/config/i386/linux64.h	Fri Mar 29 16:41:20 2013 -0400
-@@ -30,3 +30,7 @@
- #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
- #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
- #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
-+
-+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
-+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
-+#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
-diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
---- a/libitm/config/linux/x86/tls.h	Fri Mar 29 16:41:17 2013 -0400
-+++ b/libitm/config/linux/x86/tls.h	Fri Mar 29 16:41:20 2013 -0400
-@@ -25,16 +25,19 @@
- #ifndef LIBITM_X86_TLS_H
- #define LIBITM_X86_TLS_H 1
- 
--#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
-+#if defined(__GLIBC_PREREQ)
-+#if __GLIBC_PREREQ(2, 10)
- /* Use slots in the TCB head rather than __thread lookups.
-    GLIBC has reserved words 10 through 13 for TM.  */
- #define HAVE_ARCH_GTM_THREAD 1
- #define HAVE_ARCH_GTM_THREAD_DISP 1
- #endif
-+#endif
- 
- #include "config/generic/tls.h"
- 
--#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
-+#if defined(__GLIBC_PREREQ)
-+#if __GLIBC_PREREQ(2, 10)
- namespace GTM HIDDEN {
- 
- #ifdef __x86_64__
-@@ -101,5 +104,6 @@
+--- a/gcc/config/aarch64/aarch64-linux.h	2013-01-10 21:38:27.000000000 +0100
++++ b/gcc/config/aarch64/aarch64-linux.h	2013-09-12 21:39:34.004829498 +0200
+@@ -21,7 +21,11 @@
+ #ifndef GCC_AARCH64_LINUX_H
+ #define GCC_AARCH64_LINUX_H
  
- } // namespace GTM
- #endif /* >= GLIBC 2.10 */
-+#endif
++/* The AArch64 port currently supports two dynamic linkers:
++   - ld-linux-aarch64.so.1 - GLIBC dynamic linker
++   - ld-musl-aarch64.so.1 - musl libc dynamic linker  */
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
  
- #endif // LIBITM_X86_TLS_H
+ #define LINUX_TARGET_LINK_SPEC  "%{h*}		\
+    %{static:-Bstatic}				\