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crypto: arm64/sha - Add constant operand modifier to ASM_EXPORT

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The operand is an integer constant, make the constness explicit by
adding the modifier. This is needed for clang to generate valid code
and also works with gcc.

Also change the constraint of the operand from 'I' ("Integer constant
that is valid as an immediate operand in an ADD instruction", AArch64)
to 'i' ("An immediate integer operand").

Based-on-patch-from: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Matthias Kaehlcke 2017-04-05 11:34:58 -07:00 committed by Herbert Xu
parent ad1064cd61
commit 42ae2922a6
2 changed files with 2 additions and 2 deletions
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2
arch/arm64/crypto/sha1-ce-glue.c
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@ -18,7 +18,7 @@
#include <linux/module.h>
#define ASM_EXPORT(sym, val) \
asm(".globl " #sym "; .set " #sym ", %0" :: "I"(val));
asm(".globl " #sym "; .set " #sym ", %c0" :: "i"(val));
MODULE_DESCRIPTION("SHA1 secure hash using ARMv8 Crypto Extensions");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");

2
arch/arm64/crypto/sha2-ce-glue.c
View File

@ -18,7 +18,7 @@
#include <linux/module.h>
#define ASM_EXPORT(sym, val) \
asm(".globl " #sym "; .set " #sym ", %0" :: "I"(val));
asm(".globl " #sym "; .set " #sym ", %c0" :: "i"(val));
MODULE_DESCRIPTION("SHA-224/SHA-256 secure hash using ARMv8 Crypto Extensions");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");