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The 'c' gdbserver command is deprecated, and it is recommended that vCont packets are used for multithreading support . I tried updating psp-gdb a while back so I could get it to support Rust, but I ran into issues with psplink losing track of the current thread.

This fails to compile using https://github.com/pspdev/pspsdk with the following error:

$ podman run --rm -v "$PWD:/build" bmaupin/pspdev:gcc-4.6.4 make release
...
main.o: In function `initialise':
(.text+0x1b4): undefined reference to `sceSysconGetPommelVersion'

I don't even see sceSysconGetPommelVersion in https://github.com/pspdev/pspsdk/blob/master/src/kernel/pspsyscon.h

A workaround is to replace:

        int t_result = sceSysconGetPommelVersion(&t_pommel);

with:

        int t_result = sceSyscon_driver_E7E87741(&t_pommel);

in usbgdb/main.c

Thanks!

It can happen that the $sp register is inside a protected memory area.
This will avoid that the memory can be read by psp-gdb, and therefor makes tracing complicated (You have to use pspsh to disable the protection and peek the value manually, then use it inside gdb).

(gdb) bt
#0  0x08835630 in _free_r ()
Cannot access memory at address 0xbebfc5c

host0:/> memprot off

Checking $sp+c

host0:/> peekw 0x0BEBFC5C
0x0BEBFC5C: 0x08809AB0
host0:/> memprot on

Looking up the symbol with gdb

(gdb) info symbol 0x08809AB0
intraFontUnload + 40 in section .text

EDIT: After further investigation I found the culprit, I think. Inside usbgdb/main.c a check assures only available memory is being read. On the PSP Fat (32MB) the regions are correct. But the PSP Slim features more RAM (64 MB). Which is why the size probably has to be adjusted:

    if((addr >= 0x08800000) && (addr < 0x0A000000))

Becomes

    if((addr >= 0x08800000) && (addr < 0x0C000000))

For the Slim.
I'm not experienced in that stuff, which is why I would like someone else to confirm this and maybe patch it.
However this patch makes gdb work for me.

I have issues compiling this because the pspsh makefile uses the out of date -lcurses library, which my linker can't find even though I have all the development packages. Changing it to -lncurses fixes it. Is there any reason not to change this?

I also have problems with the libusb requirement. This software uses libusb 0.1, but my os only has the dev package for libusb 1.0 which is not backwards compatible.

When I try to start pspsh.exe or usbhostfs_pc.exe I have an error saying "cygncursesw-10.dll" is missing, someone knows why?

I got this message after mistakenly typing a quotation mark after a command. I can still continue to do commands and test games after running PSPSH again.

Well, it is documented in the PDF, but not on the github pages site, which should be changed.

I'm seeing an awful lot of prebuilt object files and binaries in the repo, that seem poorly fit in a source code repo. Can I remove these while I'm anyways fixing some compiler errors and warnings?

Currently we build pspsh and usbhostfs_pc using Cygwin, because the code is so reliant on Linux specific libraries that it does not build with MinGW. We should address this and switch.