Built-in ARM Assembler Variables
The ARM Assembler contains built-in variables for programmer convenience.
The following table shows the built-in variable definitions.
| Variable | Description |
|---|---|
| {PC} or . | Contains current value of the program location counter. |
| {VAR} or @ | Contains 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 in 32-bit program counter mode, and the value 26 if it is in 26-bit mode. |
| {ENDIAN} | Has the value "big" if the assembler is in big-endian mode, and the value "little" if it is in little-endian mode. |
| {CODESIZE} | Has the value 16 if compiling Thumb code. Otherwise it is 32. |
| {CPU} | Has the name of the selected CPU, or generic ARM if no CPU specified. |
| {ARCHITECTURE} | Has the value of the selected ARM architecture, 4 or 4T. |
See Also
ARM Assembler | Predeclared ARM Register Names
Last updated on Thursday, April 08, 2004
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