Live Coding with Gerph, Sunday 4th August

Hiya,

This Sunday – 4th August, at 1pm – I’m doing the live coding again, writing a Debugger module.

For anyone who hasn’t seen them, these are where I share my screen for about 3 hours and code some more of a Debugger module for RISC OS. It’s not especially complicated, but it makes for an interesting project. So far we have:

• *Memory
• *MemoryI
• *MemoryA
• *DumpI
• *InitStore
• *ShowRegs
• *BreakSet
• *BreakClr
• *BreakList
• *Debug
• *Continue
• SWI Debugger_Disassemble
• SWI Debugger_DisassembleThumb
• The module is built and released automatically through CI on GitHub – https://github.com/gerph/darm/releases
• There’s a project board to record what needs to be done – https://github.com/users/gerph/projects/1

Last time I finished the breakpoints implementation, and started tidying up the operands and mnemonics. I’ll be continuing that, and then looking at the DebuggerPlus SWIs.

Come along if you like – https://youtube.com/live/zIPCHhv1RN4 – or you can always watch the video afterwards.

Today I improved how a bunch of instructions were decoded and started looking at some problems with the upstream disassembler.
There are a few things that don’t work properly, and whilst I fixed some undefined instructions, there’s still some more to do to fix MSR/MRS.
This week’s second half was a lot of looking through documentation and trying to work my way through the code to understand how it fits together.

If anyone wants to help out, remember you can always have a go and submit pull requests if you get anywhere!

No live coding this coming weekend – 11th August – as I’m preparing for a presentation at ROUGOL on the 19th. Fingers crossed I’ll be able to get enough done that I can return to live coding next week.