From: Yury Norov <ynorov@caviumnetworks.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
        Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
Cc: Yury Norov <ynorov@caviumnetworks.com>,
        Adam Borowski <kilobyte@angband.pl>, Andreas Schwab <schwab@suse.de>,
        Andrew Pinski <pinskia@gmail.com>,
        Bamvor Zhangjian <bamvor.zhangjian@huawei.com>,
        Chris Metcalf <cmetcalf@ezchip.com>,
        Chris Metcalf <cmetcalf@mellanox.com>,
        Florian Weimer <fweimer@redhat.com>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        James Hogan <james.hogan@imgtec.com>,
        James Morse <james.morse@arm.com>,
        Joseph Myers <joseph@codesourcery.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>, Nathan_Lynch@mentor.com,
        Prasun.Kapoor@caviumnetworks.com,
        Ramana Radhakrishnan <ramana.gcc@googlemail.com>,
        Steve Ellcey <sellcey@caviumnetworks.com>,
        Alexander Graf <agraf@suse.de>, Mark Brown <broonie@kernel.org>,
        christoph.muellner@theobroma-systems.com, davem@davemloft.net,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Alexey Klimov <klimov.linux@gmail.com>, linyongting@huawei.com,
        manuel.montezelo@gmail.com, philipp.tomsich@theobroma-systems.com,
        schwidefsky@de.ibm.com, szabolcs.nagy@arm.com,
        zhouchengming1@huawei.com, Andrew Pinski <apinski@cavium.com>
Subject: [PATCH 07/20] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64
Date: Mon, 19 Jun 2017 18:49:50 +0300
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From: Andrew Pinski <apinski@cavium.com>

Define __BITS_PER_LONG depending on the ABI used (i.e. check whether
__ILP32__ or __LP64__ is defined).  This is necessary for glibc to
determine the appropriate type definitions for the system call interface.

Signed-off-by: Andrew Pinski <apinski@cavium.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/include/uapi/asm/bitsperlong.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/include/uapi/asm/bitsperlong.h b/arch/arm64/include/uapi/asm/bitsperlong.h
index fce9c2924fa3..4265243e326f 100644
--- a/arch/arm64/include/uapi/asm/bitsperlong.h
+++ b/arch/arm64/include/uapi/asm/bitsperlong.h
@@ -16,7 +16,14 @@
 #ifndef __ASM_BITSPERLONG_H
 #define __ASM_BITSPERLONG_H
 
-#define __BITS_PER_LONG 64
+#if defined(__LP64__)
+/* Assuming __LP64__ will be defined for native ELF64's and not for ILP32. */
+#  define __BITS_PER_LONG 64
+#elif defined(__ILP32__)
+#  define __BITS_PER_LONG 32
+#else
+#  error "Neither LP64 nor ILP32: unsupported ABI in asm/bitsperlong.h"
+#endif
 
 #include <asm-generic/bitsperlong.h>
 
-- 
2.11.0