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Commit1d2e9b67b0("ARM: 9265/1: pass -march= only to compiler") added a __thumb2__ define to ASFLAGS to avoid build errors in the crypto code, which relies on __thumb2__ for preprocessing. Commit59e2cf8d21("ARM: 9275/1: Drop '-mthumb' from AFLAGS_ISA") followed up on this by removing -mthumb from AFLAGS so that __thumb2__ would not be defined when the default target was ARMv7 or newer. Unfortunately, the second commit's fix assumes that the toolchain defaults to -mno-thumb / -marm, which is not the case for Debian's arm-linux-gnueabihf target, which defaults to -mthumb: $ echo | arm-linux-gnueabihf-gcc -dM -E - | grep __thumb #define __thumb2__ 1 #define __thumb__ 1 This target is used by several CI systems, which will still see redefined macro warnings, despite '-mthumb' not being present in the flags: <command-line>: warning: "__thumb2__" redefined <built-in>: note: this is the location of the previous definition Remove the global AFLAGS __thumb2__ define and move it to the crypto folder where it is required by the imported OpenSSL algorithms; the rest of the kernel should use the internal CONFIG_THUMB2_KERNEL symbol to know whether or not Thumb2 is being used or not. Be sure that __thumb2__ is undefined first so that there are no macro redefinition warnings. Link: https://github.com/ClangBuiltLinux/linux/issues/1772 Reported-by: "kernelci.org bot" <bot@kernelci.org> Suggested-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Fixes:59e2cf8d21("ARM: 9275/1: Drop '-mthumb' from AFLAGS_ISA") Fixes:1d2e9b67b0("ARM: 9265/1: pass -march= only to compiler") Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
65 lines
2.7 KiB
Makefile
65 lines
2.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Arch-specific CryptoAPI modules.
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#
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obj-$(CONFIG_CRYPTO_AES_ARM) += aes-arm.o
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obj-$(CONFIG_CRYPTO_AES_ARM_BS) += aes-arm-bs.o
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obj-$(CONFIG_CRYPTO_SHA1_ARM) += sha1-arm.o
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obj-$(CONFIG_CRYPTO_SHA1_ARM_NEON) += sha1-arm-neon.o
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obj-$(CONFIG_CRYPTO_SHA256_ARM) += sha256-arm.o
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obj-$(CONFIG_CRYPTO_SHA512_ARM) += sha512-arm.o
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obj-$(CONFIG_CRYPTO_BLAKE2S_ARM) += libblake2s-arm.o
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obj-$(CONFIG_CRYPTO_BLAKE2B_NEON) += blake2b-neon.o
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obj-$(CONFIG_CRYPTO_CHACHA20_NEON) += chacha-neon.o
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obj-$(CONFIG_CRYPTO_POLY1305_ARM) += poly1305-arm.o
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obj-$(CONFIG_CRYPTO_NHPOLY1305_NEON) += nhpoly1305-neon.o
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obj-$(CONFIG_CRYPTO_CURVE25519_NEON) += curve25519-neon.o
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obj-$(CONFIG_CRYPTO_AES_ARM_CE) += aes-arm-ce.o
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obj-$(CONFIG_CRYPTO_SHA1_ARM_CE) += sha1-arm-ce.o
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obj-$(CONFIG_CRYPTO_SHA2_ARM_CE) += sha2-arm-ce.o
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obj-$(CONFIG_CRYPTO_GHASH_ARM_CE) += ghash-arm-ce.o
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obj-$(CONFIG_CRYPTO_CRCT10DIF_ARM_CE) += crct10dif-arm-ce.o
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obj-$(CONFIG_CRYPTO_CRC32_ARM_CE) += crc32-arm-ce.o
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aes-arm-y := aes-cipher-core.o aes-cipher-glue.o
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aes-arm-bs-y := aes-neonbs-core.o aes-neonbs-glue.o
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sha1-arm-y := sha1-armv4-large.o sha1_glue.o
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sha1-arm-neon-y := sha1-armv7-neon.o sha1_neon_glue.o
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sha256-arm-neon-$(CONFIG_KERNEL_MODE_NEON) := sha256_neon_glue.o
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sha256-arm-y := sha256-core.o sha256_glue.o $(sha256-arm-neon-y)
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sha512-arm-neon-$(CONFIG_KERNEL_MODE_NEON) := sha512-neon-glue.o
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sha512-arm-y := sha512-core.o sha512-glue.o $(sha512-arm-neon-y)
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libblake2s-arm-y:= blake2s-core.o blake2s-glue.o
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blake2b-neon-y := blake2b-neon-core.o blake2b-neon-glue.o
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sha1-arm-ce-y := sha1-ce-core.o sha1-ce-glue.o
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sha2-arm-ce-y := sha2-ce-core.o sha2-ce-glue.o
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aes-arm-ce-y := aes-ce-core.o aes-ce-glue.o
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ghash-arm-ce-y := ghash-ce-core.o ghash-ce-glue.o
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crct10dif-arm-ce-y := crct10dif-ce-core.o crct10dif-ce-glue.o
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crc32-arm-ce-y:= crc32-ce-core.o crc32-ce-glue.o
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chacha-neon-y := chacha-scalar-core.o chacha-glue.o
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chacha-neon-$(CONFIG_KERNEL_MODE_NEON) += chacha-neon-core.o
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poly1305-arm-y := poly1305-core.o poly1305-glue.o
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nhpoly1305-neon-y := nh-neon-core.o nhpoly1305-neon-glue.o
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curve25519-neon-y := curve25519-core.o curve25519-glue.o
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quiet_cmd_perl = PERL $@
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cmd_perl = $(PERL) $(<) > $(@)
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$(obj)/%-core.S: $(src)/%-armv4.pl
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$(call cmd,perl)
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clean-files += poly1305-core.S sha256-core.S sha512-core.S
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aflags-thumb2-$(CONFIG_THUMB2_KERNEL) := -U__thumb2__ -D__thumb2__=1
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AFLAGS_sha256-core.o += $(aflags-thumb2-y)
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AFLAGS_sha512-core.o += $(aflags-thumb2-y)
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# massage the perlasm code a bit so we only get the NEON routine if we need it
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poly1305-aflags-$(CONFIG_CPU_V7) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=5
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poly1305-aflags-$(CONFIG_KERNEL_MODE_NEON) := -U__LINUX_ARM_ARCH__ -D__LINUX_ARM_ARCH__=7
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AFLAGS_poly1305-core.o += $(poly1305-aflags-y) $(aflags-thumb2-y)
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