Command line tools

msp43.asm.as

An assembler for MSP430(X).

Warning

This tool is currently in an experimental stage. Is has been used to successfully create simple programs but it is not broadly tested.

Command line

Usage: as.py [options]

Options:
-h, --help show this help message and exit
-x, --msp430x Enable MSP430X instruction set
-o FILE, --outfile=FILE
 name of the object file
--filename=FILE
 Use this filename for input (useful when source is passed on stdin)
-v, --verbose print status messages to stderr
--debug print debug messages to stderr
-i, --instructions
 Show list of supported instructions and exit (see also -x)

Supported directives

The instruction set as documented in the MSP430 family guides is supported as well as the following pseudo instructions:

  • .ASCII Insert the given text as bytes
  • .ASCIIZ Insert the given text as bytes, append null byte
  • .BSS Select .bss section for output
  • .BYTE Insert the given 8 bit values
  • .DATA Select .data section for output
  • .EVEN Align address pointer to an even address
  • .LONG Insert the given 32 bit values
  • .SECTION Select named section for output
  • .SET Define a symbol with a value (can be used at link time)
  • .SKIP Skip the given amount of bytes
  • .TEXT Select .text section for output
  • .WEAKALIAS Create alias for label in case it is not defined directly
  • .WORD Insert the given 16 bit values

msp430.asm.ld

The linker processes one or multiple .o4 files (the output from as) and creates a binary file that can be downloaded to a target.

Command line

Usage: ld.py [options] [FILE...]|-]

If no input files are specified data is read from stdin. Output is in “TI-Text” format.

Options:
-h, --help show this help message and exit
-o FILE, --outfile=FILE
 name of the resulting binary (TI-Text)
-T FILE, --segmentfile=FILE
 linker definition file
-m MCU, --mcu=MCU
 name of the MCU (used to load memory map)
--mapfile=FILE write map file
-v, --verbose print status messages
--debug print debug messages

msp430.asm.cpp

This is an (almost C compatible) preprocessor. It can work with macros (#define) and evaluate arithmetic expressions.

Supported directives are:

  • #define Define a value or function like macro
  • #include Read and insert given file
  • #if Conditional compilation is predicate is true. defined is also supported.
  • #ifdef Conditional compilation if given symbol is defined
  • #ifndef Conditional compilation if given symbol is not defined
  • #else For the inverse of #if/#ifdef/#ifndef
  • #endif Finish #if/#ifdef/#ifndef / #else
  • #undef Forget about the definition of a macro

Command line

Usage: cpp.py [options]

Options:
-h, --help show this help message and exit
-o FILE, --outfile=FILE
 name of the object file
-p FILE, --preload=FILE
 process this file first. its output is discarded but definitions are kept.
-v, --verbose print status messages
--debug print debug messages to stdout
-D SYMVALUE, --define=SYMVALUE
 define symbol
-I PATH, --include-path=PATH
 Add directory to the search path list for includes

To define symbols, use -D SYMBOL=VALUE respectively --define SYMBOL=VALUE

msp430.asm.disassemble

This is a disassembler for MSP430(X) code. It outputs an annotated listing. Each jump target is assigned an automatic label and a newline is inserted after each non conditional jump to make reading the source easier.

The disassembler currently has no knowledge about the memory map or usage of memory. Therefore it disassembles just anything, even if it is not code.

Provided with a symbol file, it can insert the names and named bits of accessed peripherals (for details see msp430/asm/definitions/F1xx.txt).

Warning

This tool is currently in an experimental stage. It is not fully tested and especially the cycle counts are not verified.

Command line

Usage: disassemble.py [options] [SOURCE...]

MSP430(X) disassembler.

Options:
-h, --help show this help message and exit
-o DESTINATION, --output=DESTINATION
 write result to given file
--debug print debug messages
-v, --verbose print more details
-i TYPE, --input-format=TYPE
 input format name (titext, ihex, bin, hex, elf)
-x, --msp430x Enable MSP430X instruction set
--source omit hex dump, just output assembler source
--symbols=NAME read register names for given architecture (e.g. F1xx)