Datasheet

Differences

• New instructions and directives

• Access to C++ class members

• Improved warning on instruction restrictions.

C compiler as preprocessor

Assembly language files can now be preprocessed with the C preprocessor.

New instructions and directives

The assembler provides support for new ARM architecture v5TEJ processors. The

instruction set is documented in the ADS Assembler Guide.

The VFPv2 instructions can move two words of data either way between the ARM core

and the VFP coprocessor.

Access to C++ class members

The assembler option

EXPORT

can be used to export symbols.

Assembly code can use a symbol definitions (symdefs) file created by the linker to

access C++ class members by their symbol.

Improved warning on instruction restrictions

There is a restriction on the use of

STM(2)

and

LDM(2)

instructions. (

STM(2)

and

LDM(2)

allow you to access the User Mode banked registers from a privileged mode.)

You must not access any of the banked registers in the instruction following an

STM(2)

LDM(2)

instruction. On architecture 5 and below, this instruction sequence is

unpredictable.

The ADS1.2 Assembler generates a warning if it finds this instruction sequence.

2.2.5 Changes to the linker

This section describes:

• Changed linker behavior on page 2-9

• New linker options on page 2-9.