[PATCH 2/2] gcc: Avoid non-aligned access for ARM5e

[Jens Rehsack <rehsack@gmail.com>]

[Icedtee Ticket #2153] -- see http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=2153

This patch prevents gcc generate code on ARM5e accessing 64 bit values, because gcc doesn't ensure they're 64 bit aligned.
Accessing a 64 bit value from a 32 bit alignment causes segmentation faults.

Patch is taken from https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/gcc/0001-ARMv5-disable-LDRD-STRD.patch

Signed-off-by: Jens Rehsack <sno@netbsd.org>
---
 meta/recipes-devtools/gcc/gcc-4.9.inc              |  1 +
 .../gcc/gcc-4.9/0065-ARMv5-disable-LDRD-STRD.patch | 24 ++++++++++++++++++++++
 meta/recipes-devtools/gcc/gcc-5.2.inc              |  1 +
 .../gcc/gcc-5.2/0042-ARMv5-disable-LDRD-STRD.patch | 24 ++++++++++++++++++++++
 4 files changed, 50 insertions(+)
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.9/0065-ARMv5-disable-LDRD-STRD.patch
 create mode 100644 meta/recipes-devtools/gcc/gcc-5.2/0042-ARMv5-disable-LDRD-STRD.patch

diff --git a/meta/recipes-devtools/gcc/gcc-4.9.inc b/meta/recipes-devtools/gcc/gcc-4.9.inc
index 691ba5f..9a1b44e 100644
--- a/meta/recipes-devtools/gcc/gcc-4.9.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.9.inc
@@ -80,6 +80,7 @@ SRC_URI = "\
     file://0062-Use-SYSTEMLIBS_DIR-replacement-instead-of-hardcoding.patch \
     file://0063-nativesdk-gcc-support.patch \
     file://0064-handle-target-sysroot-multilib.patch \
+    file://0065-ARMv5-disable-LDRD-STRD.patch \
 "
 SRC_URI[md5sum] = "6f831b4d251872736e8e9cc09746f327"
 SRC_URI[sha256sum] = "2332b2a5a321b57508b9031354a8503af6fdfb868b8c1748d33028d100a8b67e"
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0065-ARMv5-disable-LDRD-STRD.patch b/meta/recipes-devtools/gcc/gcc-4.9/0065-ARMv5-disable-LDRD-STRD.patch
new file mode 100644
index 0000000..68fe3b9
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.9/0065-ARMv5-disable-LDRD-STRD.patch
@@ -0,0 +1,24 @@
+From b1884b6d1950422a32f9ced0be6d5492e4315547 Mon Sep 17 00:00:00 2001
+From: Kevin Mihelich <kevin@archlinuxarm.org>
+Date: Wed, 7 Jan 2015 18:43:57 -0700
+Subject: [PATCH] ARMv5: disable LDRD/STRD
+
+---
+ gcc/config/arm/arm.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
+index c60d9a4..65c60b9 100644
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -282,7 +282,7 @@ extern void (*arm_lang_output_object_attributes_hook)(void);
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
++#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
+-- 
+2.2.1
diff --git a/meta/recipes-devtools/gcc/gcc-5.2.inc b/meta/recipes-devtools/gcc/gcc-5.2.inc
index f6673e6..044e8ae 100644
--- a/meta/recipes-devtools/gcc/gcc-5.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-5.2.inc
@@ -73,6 +73,7 @@ SRC_URI = "\
            file://0039-libcc1-fix-libcc1-s-install-path-and-rpath.patch \
            file://0040-nativesdk-gcc-support.patch \
            file://0041-handle-target-sysroot-multilib.patch \
+           file://0042-ARMv5-disable-LDRD-STRD.patch \
           "
 
 BACKPORTS = ""
diff --git a/meta/recipes-devtools/gcc/gcc-5.2/0042-ARMv5-disable-LDRD-STRD.patch b/meta/recipes-devtools/gcc/gcc-5.2/0042-ARMv5-disable-LDRD-STRD.patch
new file mode 100644
index 0000000..68fe3b9
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-5.2/0042-ARMv5-disable-LDRD-STRD.patch
@@ -0,0 +1,24 @@
+From b1884b6d1950422a32f9ced0be6d5492e4315547 Mon Sep 17 00:00:00 2001
+From: Kevin Mihelich <kevin@archlinuxarm.org>
+Date: Wed, 7 Jan 2015 18:43:57 -0700
+Subject: [PATCH] ARMv5: disable LDRD/STRD
+
+---
+ gcc/config/arm/arm.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
+index c60d9a4..65c60b9 100644
+--- a/gcc/config/arm/arm.h
++++ b/gcc/config/arm/arm.h
+@@ -282,7 +282,7 @@ extern void (*arm_lang_output_object_attributes_hook)(void);
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
++#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
+-- 
+2.2.1
-- 
2.4.3

-- 
Jens Rehsack - rehsack@gmail.com