gcc: Upgrade 7.2 -> 7.3

The static PIE patch was updated by Juro Bystricky <juro.bystricky@intel.com>
to work with gcc 7.3.

This update from the stable gcc 7 branch includes the retpoline
functionality which is useful to assist with recent security issues.

Two backported patches were dropped as they're included in 7.3.

(From OE-Core rev: a4c1ede6876ad6b84ab2b3bece14bf0afdc9d6b7)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-7.3/0024-gcc-armv4-pass-fix-v4bx-to-linker-to-support-EABI.patch b/meta/recipes-devtools/gcc/gcc-7.3/0024-gcc-armv4-pass-fix-v4bx-to-linker-to-support-EABI.patch
new file mode 100644
index 0000000000..aa1e1bb8b1
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-7.3/0024-gcc-armv4-pass-fix-v4bx-to-linker-to-support-EABI.patch
@@ -0,0 +1,43 @@
+From 74d8dc48cb185e304c60067b4d8b50447ec328ec Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 29 Mar 2013 09:30:32 +0400
+Subject: [PATCH 24/47] gcc: armv4: pass fix-v4bx to linker to support EABI.
+
+The LINK_SPEC for linux gets overwritten by linux-eabi.h which
+means the value of TARGET_FIX_V4BX_SPEC gets lost and as a result
+the option is not passed to linker when chosing march=armv4
+This patch redefines this in linux-eabi.h and reinserts it
+for eabi defaulting toolchains.
+
+We might want to send it upstream.
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Upstream-Status: Pending
+---
+ gcc/config/arm/linux-eabi.h | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
+index fbac9a9d994..5a51a8a7095 100644
+--- a/gcc/config/arm/linux-eabi.h
++++ b/gcc/config/arm/linux-eabi.h
+@@ -88,10 +88,14 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
++/* For armv4 we pass --fix-v4bx to linker to support EABI */
++#undef TARGET_FIX_V4BX_SPEC
++#define TARGET_FIX_V4BX_SPEC "%{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4: --fix-v4bx}"
++
+ /* 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
+-#define LINK_SPEC EABI_LINK_SPEC                                       \
++#define LINK_SPEC TARGET_FIX_V4BX_SPEC EABI_LINK_SPEC                  \
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,                         \
+                       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
+-- 
+2.12.2
+