Xxx baremetal

[i4ki]

/cc @geyslan

I copied my term implementation from EnzOS and the printf implementation of libc from SmallerC to run the example debugger (#1 still unnamed as xxx) in bare metal. The script to build was part copy-pasted from other project of my own too.

Below is an screenshot of qemu:

The code of regs.c is the same (with exception that printf I'm using do not support tabs, then registers are separated by spaces).

Why I'm doing this? Because it would be very cool if we could build the debugger to run in a host OS (linux and so on) and on bare metal also.

But we'll need to find a good project layout and abstractions to make it work. Some way to separate system-dependent and system-independent code.

The code is a mess... It was only a hack/PoC and do not need a review from your side.

[geyslan]

This is great! Baremetal debugging is a really nice idea. I liked it.
We've discussed on #1 about the project layout and more. 👍

[i4ki]

The make baremetal works on your machine?

[geyslan]

Not actually. Some errors in Makefile and/or make.sh. I'll try again later and do a review.

[i4ki]

Maybe related to nash version... Some incompatible changes happened recently..

[geyslan]

make baremetal error output:

cd ./scripts/.nash/lib && git clone git@github.com:NeowayLabs/nashlib.git
Cloning into 'nashlib'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
make: *** [Makefile:31: scripts/bin/nash] Error 128

$ git diff -U0

diff --git a/xxx/Makefile b/xxx/Makefile
index 3588020..577453c 100644
--- a/xxx/Makefile
+++ b/xxx/Makefile
@@ -23 +23 @@ scripts/BootProg:
-       cd scripts && git clone git@github.com:alexfru/BootProg.git
+       cd scripts && git clone https://github.com/alexfru/BootProg.git
@@ -31 +31 @@ $(NASHBIN):
-       cd $(NASHPATH)/lib && git clone git@github.com:NeowayLabs/nashlib.git
+       cd $(NASHPATH)/lib && git clone https://github.com/NeowayLabs/nashlib.git

make baremetal again...

cd scripts/BootProg && smlrcc mkimg144.c -o mkimg144
cd scripts/BootProg && nasm -f bin flp144.asm -o flp144.bin
NASHPATH=./scripts/.nash ./scripts/bin/nash ./make.sh baremetal
./make.sh:3:0: Failed to import path 'nashlib/sed'. The locations below have been tried:
 "./nashlib/sed", "./nashlib/sed.sh", "./scripts/.nash/lib/nashlib/sed", "./scripts/.nash/lib/nashlib/sed.sh"
make: *** [Makefile:37: baremetal] Error 1

[i4ki]

Did you installed last nash version?

[geyslan]

nash-git-r578.bca7991-1 from AUR, but I removed it and built a clone repo. Same error.