This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
[PATCH 03/18] arm64: ensure the kernel is compiled for LP64
- From: Yury Norov <ynorov at caviumnetworks dot com>
- To: <arnd at arndb dot de>, <catalin dot marinas at arm dot com>, <linux-arm-kernel at lists dot infradead dot org>, <linux-kernel at vger dot kernel dot org>, <linux-doc at vger dot kernel dot org>, <linux-arch at vger dot kernel dot org>, <libc-alpha at sourceware dot org>
- Cc: <schwidefsky at de dot ibm dot com>, <heiko dot carstens at de dot ibm dot com>, <ynorov at caviumnetworks dot com>, <pinskia at gmail dot com>, <broonie at kernel dot org>, <joseph at codesourcery dot com>, <christoph dot muellner at theobroma-systems dot com>, <bamvor dot zhangjian at huawei dot com>, <szabolcs dot nagy at arm dot com>, <klimov dot linux at gmail dot com>, <Nathan_Lynch at mentor dot com>, <agraf at suse dot de>, <Prasun dot Kapoor at caviumnetworks dot com>, <kilobyte at angband dot pl>, <geert at linux-m68k dot org>, <philipp dot tomsich at theobroma-systems dot com>, <manuel dot montezelo at gmail dot com>, <linyongting at huawei dot com>, <maxim dot kuvyrkov at linaro dot org>, <davem at davemloft dot net>, <zhouchengming1 at huawei dot com>, <cmetcalf at ezchip dot com>, Andrew Pinski <apinski at cavium dot com>, Andrew Pinski <Andrew dot Pinski at caviumnetworks dot com>
- Date: Wed, 17 Aug 2016 14:46:28 +0300
- Subject: [PATCH 03/18] arm64: ensure the kernel is compiled for LP64
- Authentication-results: sourceware.org; auth=none
- Authentication-results: spf=none (sender IP is ) smtp.mailfrom=Yuri dot Norov at caviumnetworks dot com;
- References: <1471434403-25291-1-git-send-email-ynorov@caviumnetworks.com>
- Spamdiagnosticmetadata: NSPM
- Spamdiagnosticoutput: 1:99
From: Andrew Pinski <apinski@cavium.com>
The kernel needs to be compiled as a LP64 binary for ARM64, even when
using a compiler that defaults to code-generation for the ILP32 ABI.
Consequently, we need to explicitly pass '-mabi=lp64' (supported on
gcc-4.9 and newer).
Signed-off-by: Andrew Pinski <Andrew.Pinski@caviumnetworks.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Reviewed-by: David Daney <ddaney@caviumnetworks.com>
---
arch/arm64/Makefile | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 5b54f8c..4800227 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -34,14 +34,19 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
KBUILD_AFLAGS += $(lseinstr)
+KBUILD_CFLAGS += $(call cc-option,-mabi=lp64)
+KBUILD_AFLAGS += $(call cc-option,-mabi=lp64)
+
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
AS += -EB
LD += -EB
+LDFLAGS += -maarch64linuxb
else
KBUILD_CPPFLAGS += -mlittle-endian
AS += -EL
LD += -EL
+LDFLAGS += -maarch64linux
endif
CHECKFLAGS += -D__aarch64__
--
2.7.4