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[stable,5.4,11/11] crypto: arm/ghash-ce - define fpu before fpu registers are referenced

Message ID 20220629180227.3408104-12-f.fainelli@gmail.com
State New
Headers show
Series ARM 32-bit build with Clang IAS | expand

Commit Message

Florian Fainelli June 29, 2022, 6:02 p.m. UTC
From: Stefan Agner <stefan@agner.ch>

commit 7548bf8c17d84607c106bd45d81834afd95a2edb upstream

Building ARMv7 with Clang's integrated assembler leads to errors such
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>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
 arch/arm/crypto/ghash-ce-core.S | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/arch/arm/crypto/ghash-ce-core.S b/arch/arm/crypto/ghash-ce-core.S
index 534c9647726d..9f51e3fa4526 100644
--- a/arch/arm/crypto/ghash-ce-core.S
+++ b/arch/arm/crypto/ghash-ce-core.S
@@ -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
-	.arch		armv8-a
-	.fpu		crypto-neon-fp-armv8
 	.macro		__pmull_p64, rd, rn, rm, b1, b2, b3, b4
 	vmull.p64	\rd, \rn, \rm