Make SHA512_SMALLER turn a macro into a function
Saves 356 bytes on sha512.o compiling for Cortex-M0+ with ARM-GCC
Size measured with:
arm-none-eabi-gcc -Wall -Wextra -Iinclude -Os -mcpu=cortex-m0plus -mthumb -c library/sha512.c
arm-none-eabi-size sha512.o
GCC version:
arm-none-eabi-gcc (GNU Tools for Arm Embedded Processors 7-2018-q2-update) 7.3.1 (release) [ARM/embedded-7-branch revision 261907]
}
#endif /* PUT_UINT64_BE */
+#if defined(MBEDTLS_SHA512_SMALLER)
+static void sha512_put_uint64_be( uint64_t n, unsigned char *b, uint8_t i )
+{
+ PUT_UINT64_BE(n, b, i);
+}
+#else
+#define sha512_put_uint64_be PUT_UINT64_BE
+#endif /* MBEDTLS_SHA512_SMALLER */
+
void mbedtls_sha512_init( mbedtls_sha512_context *ctx )
{
SHA512_VALIDATE( ctx != NULL );
@@ -403,8 +412,8 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
| ( ctx->total[1] << 3 );
low = ( ctx->total[0] << 3 );
- PUT_UINT64_BE( high, ctx->buffer, 112 );
- PUT_UINT64_BE( low, ctx->buffer, 120 );
+ sha512_put_uint64_be( high, ctx->buffer, 112 );
+ sha512_put_uint64_be( low, ctx->buffer, 120 );
if( ( ret = mbedtls_internal_sha512_process( ctx, ctx->buffer ) ) != 0 )
return( ret );
@@ -412,17 +421,17 @@ int mbedtls_sha512_finish_ret( mbedtls_sha512_context *ctx,
/*
* Output final state
*/
- PUT_UINT64_BE( ctx->state[0], output, 0 );
- PUT_UINT64_BE( ctx->state[1], output, 8 );
- PUT_UINT64_BE( ctx->state[2], output, 16 );
- PUT_UINT64_BE( ctx->state[3], output, 24 );
- PUT_UINT64_BE( ctx->state[4], output, 32 );
- PUT_UINT64_BE( ctx->state[5], output, 40 );
+ sha512_put_uint64_be( ctx->state[0], output, 0 );
+ sha512_put_uint64_be( ctx->state[1], output, 8 );
+ sha512_put_uint64_be( ctx->state[2], output, 16 );
+ sha512_put_uint64_be( ctx->state[3], output, 24 );
+ sha512_put_uint64_be( ctx->state[4], output, 32 );
+ sha512_put_uint64_be( ctx->state[5], output, 40 );
if( ctx->is384 == 0 )
{
- PUT_UINT64_BE( ctx->state[6], output, 48 );
- PUT_UINT64_BE( ctx->state[7], output, 56 );
+ sha512_put_uint64_be( ctx->state[6], output, 48 );
+ sha512_put_uint64_be( ctx->state[7], output, 56 );
}
return( 0 );
