USR_MAPPED_BLK_SM_START_IDX
blocks[USR_MAPPED_BLK_SM_START_IDX + 2 * (i - 1)].size = SM_OBJS_BLOCK_SIZE;
blocks[USR_MAPPED_BLK_SM_START_IDX + 2 * (i - 1) + 1].size = HL_BLOCK_SIZE;
blocks[USR_MAPPED_BLK_SM_START_IDX + 2 * (i - 1)].address =
blocks[USR_MAPPED_BLK_SM_START_IDX + 2 * (i - 1) + 1].address =