openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

crypto: aegis128-neon - use Clang compatible cflags for ARM 

The next version of Clang will start policing compiler command line
options, and will reject combinations of -march and -mfpu that it
thinks are incompatible.

This results in errors like

  clang-10: warning: ignoring extension 'crypto' because the 'armv7-a'
  architecture does not support it [-Winvalid-command-line-argument]
  /tmp/aegis128-neon-inner-5ee428.s: Assembler messages:
            /tmp/aegis128-neon-inner-5ee428.s:73: Error: selected
  processor does not support `aese.8 q2,q14' in ARM mode

when buiding the SIMD aegis128 code for 32-bit ARM, given that the
'armv7-a' -march argument is considered to be compatible with the
ARM crypto extensions. Instead, we should use armv8-a, which does
allow the crypto extensions to be enabled.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2019-09-13 19:36:18 +01:00 committed by Herbert Xu
parent e48862147f
commit 2eb2d198bd
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
crypto/Makefile
View File

@ -93,7 +93,7 @@ obj-$(CONFIG_CRYPTO_AEGIS128) += aegis128.o
aegis128-y := aegis128-core.o
ifeq ($(ARCH),arm)
CFLAGS_aegis128-neon-inner.o += -ffreestanding -march=armv7-a -mfloat-abi=softfp
CFLAGS_aegis128-neon-inner.o += -ffreestanding -march=armv8-a -mfloat-abi=softfp
CFLAGS_aegis128-neon-inner.o += -mfpu=crypto-neon-fp-armv8
aegis128-$(CONFIG_CRYPTO_AEGIS128_SIMD) += aegis128-neon.o aegis128-neon-inner.o
endif