Description: unset CALL_MCOUNT for __libc_do_syscall
 unset CALL_MCOUNT before __libc_do_syscall, because it only supports Thumb-2
 and ARM mode, not Thumb-1; and because profiling this internal routine
 is of dubious value.
Origin: https://bugs.launchpad.net/linaro-toolchain-misc/+bug/605030/+attachment/1484534/+files/libc-do-syscall.S
Author: Peter Pearse <peter.pearse@linaro.org>
Bug-Linaro: https://bugs.launchpad.net/linaro-toolchain-misc/+bug/605030
Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/605030
Reviewed-by: Steve Langasek <steve.langasek@linaro.org>

Index: glibc-2.12.1/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S
===================================================================
--- glibc-2.12.1.orig/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S
+++ glibc-2.12.1/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S
@@ -29,6 +29,12 @@
 	.syntax unified
 	.hidden __libc_do_syscall
 
+/*
+ * PMP Work round for https://bugs.launchpad.net/gcc-linaro/+bug/605030
+ */
+#undef CALL_MCOUNT
+#define CALL_MCOUNT
+
 ENTRY (__libc_do_syscall)
 	.fnstart
 	push	{r7, lr}