target.LanguageImplementation Class
Namespace: target
Provide C and C++ compiler implementation details
Description
Use the target.LanguageImplementation
class to provide implementation
details about the C and C++ compiler for your target hardware. For example, byte
ordering.
To create a target.LanguageImplementation
object, use the target.create
function.
Properties
AtomicFloatSize
— Largest atomic float size
integer
Size in bits of the largest floating-point data type that you can atomically load and store on the hardware
Attributes:
GetAccess | public |
SetAccess | public |
Data Types: int32
AtomicIntegerSize
— Largest atomic integer size
integer
Size in bits of the largest integer that you can atomically load and store on the hardware
Attributes:
GetAccess | public |
SetAccess | public |
Data Types: int32
Endianess
— Byte ordering
'Little'
(default) | 'Big'
| 'Unspecified'
Byte ordering implemented by target hardware.
Attributes:
GetAccess | public |
SetAccess | public |
DataTypes
— Data type definitions
target.DataTypes object
Provides C and C++ data type definitions through properties described in this table.
Property Name | Purpose |
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Attributes:
GetAccess | public |
SetAccess | private |
Id
— Object identifier
character vector | string
Value of Name
property.
Attributes:
GetAccess | public |
SetAccess | private |
Name
— Name
character vector | string
Name of the target language implementation
Attributes:
GetAccess | public |
SetAccess | public |
WordSize
— Native word size
integer
Native word size for the target hardware.
Attributes:
GetAccess | public |
SetAccess | public |
Data Types: int32
Examples
Specify Hardware Implementation for New Device
This example shows how to register a new hardware device.
Create a target.Processor
object for the new hardware device.
myProc = target.create("Processor",Name="MyProcessor", ... Manufacturer="MyManufacturer");
Create a target.LanguageImplementation
object for language implementation details.
myLanguageImplementation = target.create("LanguageImplementation", ... Name="MyProcessorImplementation");
Specify language implementation details.
myLanguageImplementation.Endianess = target.Endianess.Little; myLanguageImplementation.AtomicIntegerSize = 64; myLanguageImplementation.AtomicFloatSize = 64; myLanguageImplementation.WordSize = 64; myLanguageImplementation.DataTypes.Char.Size = 8; myLanguageImplementation.DataTypes.Short.Size = 16; myLanguageImplementation.DataTypes.Int.Size = 32; myLanguageImplementation.DataTypes.Long.Size = 64; myLanguageImplementation.DataTypes.LongLong.IsSupported = true; myLanguageImplementation.DataTypes.LongLong.Size = 64; myLanguageImplementation.DataTypes.Float.Size = 32; myLanguageImplementation.DataTypes.Double.Size = 64; myLanguageImplementation.DataTypes.Pointer.Size = 32; myLanguageImplementation.DataTypes.SizeT.Size = 64; myLanguageImplementation.DataTypes.PtrDiffT.Size = 64;
Associate the language implementation with the hardware device.
myProc.LanguageImplementations = myLanguageImplementation;
Add the target.Processor
object to an internal database.
objectsAdded = target.add(myProc);
"target.add" summary: Objects added to internal database for current MATLAB session: target.LanguageImplementation "MyProcessorImplementation" target.Processor "MyManufacturer-MyProcessor"
If you are using the MATLAB® Coder™: On the Hardware tab, you see the new device. Alternatively, you can now create a
coder.Hardware
object for this device by using thecoder.hardware
function.If you are using the Simulink® Coder™: On the Hardware Implementation pane, you can now set Device vendor and Device type to
MyManufacturer
andMyProcessor
respectively.
To remove the objects from the internal database, enter:
target.remove(objectsAdded)
"target.remove" summary: Objects removed from internal database: target.LanguageImplementation "MyProcessorImplementation" target.Processor "MyManufacturer-MyProcessor"
Create Hardware Implementation by Modifying Existing Implementation
If an existing hardware implementation contains most of the values that you want in a new hardware implementation, you can quickly create the new implementation by creating and modifying a copy of the existing implementation.
Create a target.Processor
object for the new hardware device.
myProc = target.create("Processor",Name="MyProcessor", ... Manufacturer="MyManufacturer");
Create a target.LanguageImplementation
object that copies an existing language implementation.
myCopiedImplementation = target.create("LanguageImplementation", ... Name="MyCopiedImplementation", ... Copy="Atmel-AVR");
Specify the required language implementation details. For example, byte ordering.
myCopiedImplementation.Endianess = target.Endianess.Big;
Associate the language implementation with the hardware device.
myProc.LanguageImplementations = myCopiedImplementation;
Add the target.Processor
object to an internal database.
objectsAdded = target.add(myProc);
"target.add" summary: Objects added to internal database for current MATLAB session: target.LanguageImplementation "MyCopiedImplementation" target.Processor "MyManufacturer-MyProcessor"
To remove the objects from the internal database, enter:
target.remove(objectsAdded)
"target.remove" summary: Objects removed from internal database: target.LanguageImplementation "MyCopiedImplementation" target.Processor "MyManufacturer-MyProcessor"
Create Hardware Implementation by Reusing Existing Implementation
If your hardware device requires the same hardware implementation as an existing implementation, you can reuse the existing implementation.
Create a target.Processor
object for the new hardware device.
myProc = target.create( "Processor",Name="MyProcessor", ... Manufacturer="MyManufacturer");
Retrieve the existing implementation by using the identifier for the device vendor and type.
existingImplementation = target.get("LanguageImplementation", ... "ARM Compatible-ARM Cortex");
Associate the language implementation with the hardware device.
myProc.LanguageImplementations = existingImplementation;
Add the target.Processor
object to an internal database.
objectsAdded = target.add(myProc);
"target.add" summary: Objects added to internal database for current MATLAB session: target.Processor "MyManufacturer-MyProcessor" Objects not added because they already exist: target.LanguageImplementation "ARM Compatible-ARM Cortex"
To remove the objects from the internal database, enter:
target.remove(objectsAdded);
"target.remove" summary: Objects removed from internal database: target.Processor "MyManufacturer-MyProcessor"
Version History
Introduced in R2019a
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