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Introduce MBEDTLS_OPTIMIZE_TINYCRYPT_ASM

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Make the ASM optimizations in tinycrypt optional.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2020-10-14 12:24:20 +02:00
parent 7e62c31097
commit db0e50ea70
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GPG key ID: 89A90840DC388527
7 changed files with 50 additions and 14 deletions
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28
tinycrypt/ecc.c
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@ -70,15 +70,15 @@
#include <string.h>
#include "mbedtls/platform_util.h"
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM
#ifdef __CC_ARM
#pragma diag_suppress 667 // strict diagnostic: "asm" function is nonstandard
#endif
#if defined MBEDTLS_HAVE_ASM
#ifndef asm
#define asm __asm
#endif
#endif
#endif /* MBEDTLS_OPTIMIZE_TINYCRYPT_ASM */
/* Parameters for curve NIST P-256 aka secp256r1 */
const uECC_word_t curve_p[NUM_ECC_WORDS] = {
@ -214,7 +214,7 @@ int uECC_curve_public_key_size(void)
return 2 * NUM_ECC_BYTES;
}
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
__asm void uECC_vli_clear(uECC_word_t *vli)
{
#if NUM_ECC_WORDS != 8
@ -237,7 +237,7 @@ __asm void uECC_vli_clear(uECC_word_t *vli)
BX lr
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__
void uECC_vli_clear(uECC_word_t *vli)
{
#if NUM_ECC_WORDS != 8
@ -281,7 +281,7 @@ void uECC_vli_clear(uECC_word_t *vli)
}
#endif
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
__asm uECC_word_t uECC_vli_isZero(const uECC_word_t *vli)
{
#if NUM_ECC_WORDS != 8
@ -323,7 +323,7 @@ __asm uECC_word_t uECC_vli_isZero(const uECC_word_t *vli)
BX lr
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__
uECC_word_t uECC_vli_isZero(const uECC_word_t *vli)
{
uECC_word_t ret;
@ -501,7 +501,7 @@ uECC_word_t cond_set(uECC_word_t p_true, uECC_word_t p_false, unsigned int cond)
/* Computes result = left - right, returning borrow, in constant time.
* Can modify in place. */
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
__asm uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
const uECC_word_t *right)
{
@ -556,7 +556,7 @@ __asm uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
POP {r4-r8,pc}
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__
uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
const uECC_word_t *right)
{
@ -638,7 +638,7 @@ uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
/* Computes result = left + right, returning carry, in constant time.
* Can modify in place. */
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
static __asm uECC_word_t uECC_vli_add(uECC_word_t *result, const uECC_word_t *left,
const uECC_word_t *right)
{
@ -693,7 +693,7 @@ static __asm uECC_word_t uECC_vli_add(uECC_word_t *result, const uECC_word_t *le
POP {r4-r8,pc}
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__
static uECC_word_t uECC_vli_add(uECC_word_t *result, const uECC_word_t *left,
const uECC_word_t *right)
{
@ -779,7 +779,7 @@ cmpresult_t uECC_vli_cmp(const uECC_word_t *left, const uECC_word_t *right)
}
/* Computes vli = vli >> 1. */
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
static __asm void uECC_vli_rshift1(uECC_word_t *vli)
{
#if defined __thumb__ && __TARGET_ARCH_THUMB < 4
@ -818,7 +818,7 @@ static __asm void uECC_vli_rshift1(uECC_word_t *vli)
BX lr
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__ && defined __thumb2__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__ && defined __thumb2__
static void uECC_vli_rshift1(uECC_word_t *vli)
{
register uECC_word_t *r0 asm ("r0") = vli;
@ -867,7 +867,7 @@ static void uECC_vli_rshift1(uECC_word_t *vli)
* [in] r: 3 words of operand to add
* [out] r: 3 words of result
*/
#if defined MBEDTLS_HAVE_ASM && defined __CC_ARM
#if defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __CC_ARM
static __asm void muladd(uECC_word_t a, uECC_word_t b, uECC_word_t r[3])
{
#if defined __thumb__ && __TARGET_ARCH_THUMB < 4
@ -917,7 +917,7 @@ static __asm void muladd(uECC_word_t a, uECC_word_t b, uECC_word_t r[3])
BX lr
#endif
}
#elif defined MBEDTLS_HAVE_ASM && defined __GNUC__ && defined __arm__
#elif defined MBEDTLS_OPTIMIZE_TINYCRYPT_ASM && defined __GNUC__ && defined __arm__
static void muladd(uECC_word_t a, uECC_word_t b, uECC_word_t r[3])
{
register uECC_word_t r0 asm ("r0") = a;