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crypto: arm/ghash-ce - define fpu before fpu registers are referenced 

Building ARMv7 with Clang's integrated assembler leads to errors such
as:
arch/arm/crypto/ghash-ce-core.S:34:11: error: register name expected
 t3l .req d16
          ^

Since no FPU has selected yet Clang considers d16 not a valid register.
Moving the FPU directive on-top allows Clang to parse the registers and
allows to successfully build this file with Clang's integrated assembler.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Stefan Agner 2020-03-02 00:37:14 +01:00 committed by Herbert Xu
parent dc7fc3a53a
commit 7548bf8c17
1 changed files with 3 additions and 2 deletions
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5
arch/arm/crypto/ghash-ce-core.S
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@ -8,6 +8,9 @@
#include <linux/linkage.h>
#include <asm/assembler.h>
.arch armv8-a
.fpu crypto-neon-fp-armv8
SHASH .req q0
T1 .req q1
XL .req q2
@ -88,8 +91,6 @@
T3_H .req d17
.text
.arch armv8-a
.fpu crypto-neon-fp-armv8
.macro __pmull_p64, rd, rn, rm, b1, b2, b3, b4
vmull.p64 \rd, \rn, \rm