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/*
 * mh_sha256_update_base.c contains the prototype of mh_sha256_update_XXX.
 * Default definitions are base type which generates mh_sha256_update_base.
 * Other types are generated through different predefined macros by mh_sha256.c.
 */
#ifndef MH_SHA256_UPDATE_FUNCTION
#include "mh_sha256_internal.h"
#include <string.h>

#define MH_SHA256_UPDATE_FUNCTION	mh_sha256_update_base
#define MH_SHA256_BLOCK_FUNCTION	mh_sha256_block_base
#define MH_SHA256_UPDATE_SLVER
#endif

int MH_SHA256_UPDATE_FUNCTION(struct mh_sha256_ctx *ctx, const void *buffer, uint32_t len)
{

	uint8_t *partial_block_buffer;
	uint64_t partial_block_len;
	uint64_t num_blocks;
	uint32_t(*mh_sha256_segs_digests)[HASH_SEGS];
	uint8_t *aligned_frame_buffer;
	const uint8_t *input_data = (const uint8_t *)buffer;

	if (ctx == NULL)
		return MH_SHA256_CTX_ERROR_NULL;

	if (len == 0)
		return MH_SHA256_CTX_ERROR_NONE;

	partial_block_len = ctx->total_length % MH_SHA256_BLOCK_SIZE;
	partial_block_buffer = ctx->partial_block_buffer;
	aligned_frame_buffer = (uint8_t *) ALIGN_64(ctx->frame_buffer);
	mh_sha256_segs_digests = (uint32_t(*)[HASH_SEGS]) ctx->mh_sha256_interim_digests;

	ctx->total_length += len;
	// No enough input data for mh_sha256 calculation
	if (len + partial_block_len < MH_SHA256_BLOCK_SIZE) {
		memcpy(partial_block_buffer + partial_block_len, input_data, len);
		return MH_SHA256_CTX_ERROR_NONE;
	}
	// mh_sha256 calculation for the previous partial block
	if (partial_block_len != 0) {
		memcpy(partial_block_buffer + partial_block_len, input_data,
		       MH_SHA256_BLOCK_SIZE - partial_block_len);
		//do one_block process
		MH_SHA256_BLOCK_FUNCTION(partial_block_buffer, mh_sha256_segs_digests,
					 aligned_frame_buffer, 1);
		input_data += MH_SHA256_BLOCK_SIZE - partial_block_len;
		len -= MH_SHA256_BLOCK_SIZE - partial_block_len;
		memset(partial_block_buffer, 0, MH_SHA256_BLOCK_SIZE);
	}
	// Calculate mh_sha256 for the current blocks
	num_blocks = len / MH_SHA256_BLOCK_SIZE;
	if (num_blocks > 0) {
		//do num_blocks process
		MH_SHA256_BLOCK_FUNCTION(input_data, mh_sha256_segs_digests,
					 aligned_frame_buffer, num_blocks);
		len -= num_blocks * MH_SHA256_BLOCK_SIZE;
		input_data += num_blocks * MH_SHA256_BLOCK_SIZE;
	}
	// Store the partial block
	if (len != 0) {
		memcpy(partial_block_buffer, input_data, len);
	}

	return MH_SHA256_CTX_ERROR_NONE;

}

#ifdef MH_SHA256_UPDATE_SLVER
struct slver {
	uint16_t snum;
	uint8_t ver;
	uint8_t core;
};

// Version info
struct slver mh_sha256_update_base_slver_000002ba;
struct slver mh_sha256_update_base_slver = { 0x02ba, 0x00, 0x00 };
#endif