ARM VERSION 1.2 - Manual (Page 88)

Assembler Reference
3-10 Copyright © 2000, 2001 ARM Limited. All rights reserved. ARM DUI 0068B
3.4 Built-in variables
Table 3-1 lists the built-in variables defined by the ARM assembler.
Built-in variables cannot be set using the SETA , SETL , or SETS directives. They can be used
in expressions or conditions, for example:
IF {ARCHITECTURE} = "4T"
Table 3-1 Built-in variables
{PC} or . Address of current instruction.
{VAR} or @ Current value of the storage area location counter.
{TRUE} Logical constant true.
{FALSE} Logical constant false.
{OPT} Value of the currently-set listing option. The OPT directive can be used to save the current listing
option, force a change in it, or restore its original value.
{CONFIG} Has the value 32 if the assembler is assembling ARM code, or 16 if it is assembling Thumb code.
{ENDIAN} Has the value big if the assembler is in big-endian mode, or little if it is in little-endian mode.
{CODESIZE} Is a synonym for {CONFIG} .
{CPU} Holds the name of the selected cpu. The default is ARM7TDMI . If an architecture was specified in
the command line -cpu option, {CPU} holds the value " Generic ARM ".
{FPU} Holds the name of the selected fpu. The default is SoftVFP .
{ARCHITECTURE} Holds the name of the selected ARM architecture.
{PCSTOREOFFSET} Is the offset between the address of the STR pc,[...] or STM Rb,{..., pc} instruction and the
value of pc stored out. This varies depending on the CPU or architecture specified.
{ARMASM_VERSION} Holds an integer that increases with each version. See also Determining the armasm version at
assembly time on page 3-11
|ads$version| Has the same value as {ARMASM_VERSION} .
{INTER} Has the value True if /inter is set. The default is False.
{ROPI} Has the value True if /ropi is set. The default is False.
{RWPI} Has the value True if /rwpi is set. The default is False.
{SWST} Has the value True if /swst is set. The default is False.
{NOSWST} Has the value True if /noswst is set. The default is False.