> On Oct 8, 2015, at 7:33 AM, Jens Rehsack <rehs...@gmail.com> wrote: > > > [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
Can you try using -mfix-cortex-m3-ldrd, does that help ? The patch is a workaround to gcc, as it seems real problem is in defining instruction constraints please open a gcc bug for this. > > Signed-off-by: Jens Rehsack <s...@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 <ke...@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 <ke...@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 - rehs...@gmail.com >
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