module to handle assembler

For some time now, Espruino supports inline assembler.
To get some experience, I created a replacement for STM32F1 Flash Memory module.
Idea was to have a binary file on SD which is loaded at runtime which would replace Gordons module.
First a new module had to be created which supports loading binarys, please see attached ASM-module.
Commands are:
var asm = require("ASM") //loads module
asm.setup(listON) // if true creates a list of loaded assembler functions, used to safe some memory)
asm.listBinaries() // if setup with true, list all loaded functions
asm.loadArray(varName,format,arr) //creates a function named by varName, using format to describe in/out values and is given by binary in arr
asm.loadSD(varName,format,fileName) //loads a binary file given by fileName, from SD-card, creates a function named by varName, using format to describe in/out values
asm.loadLibrary(lib) // loads a library of functions.
Next post will give a description about lib object for the Flash assembler module.

1 Attachment

• ASM.js

The next post (about lib) is at: http://forum.espruino.com/conversations/­257273

This looks really cool - I'm a bit busy now but this seems like it could make loading assembler modules a lot easier.

I wonder - this is slightly different, but what do you think about using the same file format as GCC? It contains the function names and argument types, and would make loading C or Assembler code trivial... You'd just compile it directly and then load the '.o' file into Espruino.

I don't know if that's possible or not or whether some other linkage is required, but it could be possible?

I'm using flat assembler from Thomasz Grysztar.
This was the only free assembler I found for ARM supporting thumb and running on windows.
It creates a bin-file which is used to upload binary data to Espruino.
My sources are short, using pc-relative adressing, so I don't need linking.
There is another file with extension .fas, but I don't find a tool to interpret this.

I guess if the flat assembler works... Being written in assembler itself it's not that portable though :) The Web IDE assembler now does labels and quite a large amount of assembler instructions - if you find something that won't compile I'd be interested to see what it is.

Just to add: The ASM module referenced here is probably not needed any more.

When you write assembler it's now assembled into a 'flat string' which is stored in the RAM dedicated to variable storage. It means that you can now save() assembled code and it'll 'just work'.