RS41P-KT-30000 Datasheet RS410-KT-30000, RS41P-KT-30000, RS41P-KT-40000 | P16-P18

Overview of the ARM Compiler toolchain

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2.6 Licensed features of the toolchain

The toolchain requires the following licenses:

• A toolchain license.

• A NEON vectorizing compiler license. The NEON vectorizing compiler license enables

the compiler to generate NEON instructions whenever appropriate to target ARM

processors with a NEON unit, such as Cortex-A8 and Cortex-A9.

• A Profiler-guided optimization license. This enables the compiler to perform

optimizations based on the data file produced by the ARM Profiler

If you purchased the toolchain with another ARM product, see the Getting Started document of

that product for details of the licenses that are included.

Licensing of the ARM development tools is controlled by the FLEXnet license management

system.

To request a license, go to ARM Web Licensing,

http://license.arm.com

and follow the online

instructions.

2.6.1 See also

Concepts

Using the Compiler:

• Chapter 4 Using the NEON Vectorizing Compiler

• About Profiler-guided optimization on page 5-3.

Reference

Compiler Reference:

• --vectorize, --no_vectorize on page 3-209.

Other information

• FLEXnet for ARM

Tools License Management Guide,

http://infocenter.arm.com/help/topic/com.arm.doc.dui0209-/index.html

• Introducing NEON Development Article,

http://infocenter.arm.com/help/topic/com.arm.doc.dht0002-/index.html

Overview of the ARM Compiler toolchain

ID080411 Non-Confidential

2.7 Standards compliance in the toolchain

The toolchain conforms to the following standards. In each case, the level of compliance is

noted:

armar

produces, and

armlink

consumes, UNIX-style object code archives.

armar

can list and extract most

-format object code archives, and

armlink

can use an

-format archive created by another archive utility providing it contains a

symbol table member.

DWARF 3 DWARF 3 debug tables (DWARF Debugging Standard Version 3) are supported

by the toolchain.

DWARF 2 DWARF 2 debug tables are supported by the toolchain, and by ELF DWARF 2

compatible debuggers from ARM.

ISO C The compiler accepts ISO C 1990 and 1999 source as input.

ISO C++ The compiler accepts ISO C++ 2003 source as input.

ELF The toolchain produces relocatable and executable files in ELF format. The

fromelf utility can translate ELF files into other formats.

Note

The DWARF 2 and DWARF 3 standard is ambiguous in some areas such as debug frame data.

This means that there is no guarantee that third-party debuggers can consume the DWARF

produced by ARM code generation tools or that an ARM debugger can consume the DWARF

produced by third-party tools.

2.7.1 See also

Concepts

• Compliance with the ABI for the ARM Architecture (Base Standard) on page 2-12.

Using the Compiler:

• Source language modes of the compiler on page 2-3.

Other information

• The DWARF Debugging Standard,

http://dwarfstd.org/

• International Organization for Standardization,

http://www.iso.org/iso/home.htm

Overview of the ARM Compiler toolchain

ID080411 Non-Confidential

2.8 Compliance with the ABI for the ARM Architecture (Base Standard)

The Application Binary Interface (ABI) for the ARM Architecture (Base Standard) (BSABI) is

a collection of standards. Some of these standards are open. Some are specific to the ARM

architecture. They regulate the inter-operation of binary code and development tools in ARM

architecture-based execution environments, ranging from bare metal to major operating systems

such as ARM Linux.

By conforming to this standard, objects produced by the toolchain can work together with object

libraries from different producers.

The BSABI consists of a family of specifications including:

AADWARF DWARF for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0040-/index.html

. This

ABI uses DWARF 3 standard to govern the exchange of debugging data between

object producers and debuggers.

AAELF ELF for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044-/index.html

Builds on the generic ELF standard to govern the exchange of linkable and

executable files between producers and consumers.

AAPCS Procedure Call Standard for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042-/index.html

Governs the exchange of control and data between functions at runtime. There is

a variant of the AAPCS for each of the major execution environment types

supported by the toolchain.

BPABI Base Platform ABI for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0037-/index.html

Governs the format and content of executable and shared object files generated

by static linkers. Supports platform-specific executable files using post linking.

Provides a base standard that is used to derive a platform ABI.

CLIBABI C Library ABI for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0039-/index.html

Defines an ABI to the C library.

CPPABI C++ ABI for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0041-/index.html

Builds on the generic C++ ABI (originally developed for IA-64) to govern

interworking between independent C++ compilers.

DBGOVL Support for Debugging Overlay Programs,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0049-/index.html

Defines an extension to the ABI for the ARM Architecture to support debugging

overlaid programs.

EHABI Exception Handling ABI for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038-/index.html

Defines both the language-independent and C++-specific aspects of how

exceptions are thrown and handled.

RTABI Run-time ABI for the ARM Architecture,

http://infocenter.arm.com/help/topic/com.arm.doc.ihi0043-/index.html

Governs what independently produced objects can assume of their execution

environments by way of floating-point and compiler helper function support.

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