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Remove not-needed mov in x86_64 asm

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-09-08 17:18:04 +01:00
parent e97de40e7b
commit 99f0cdc0e0
1 changed files with 2 additions and 3 deletions
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5
library/constant_time_impl.h
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@ -345,8 +345,7 @@ static inline mbedtls_ct_condition_t mbedtls_ct_uint_lt(mbedtls_ct_uint_t x, mbe
"not %[mask] \n\t"
"and %[mask], %[x] \n\t"
"or %[y], %[x] \n\t"
"mov %[x], %[mask] \n\t"
"sar $63, %[mask] \n\t"
"sar $63, %[x] \n\t"
:
[mask] "=&a" (mask),
[x] "+&S" (x),
@ -354,7 +353,7 @@ static inline mbedtls_ct_condition_t mbedtls_ct_uint_lt(mbedtls_ct_uint_t x, mbe
:
:
);
return (mbedtls_ct_condition_t) mask;
return (mbedtls_ct_condition_t) x;
#elif defined(MBEDTLS_CT_X86_ASM) && defined(MBEDTLS_CT_SIZE_32)
uint32_t s;
asm volatile ("mov %[x], %[s] \n\t"