pape causes OS to freeze in qemu

[spencerking]

Release: 0.0.5
Qemu options: qemu-system-x86_64 -hda disk.img -vga std -m 512M -serial stdio

I cd'd into /share/papes and ran pape pape.png and the OS froze and my machine's fans spun up rapidly.

Here is qemu's output in my terminal:

rbp=2d0 
rdi=2
rsi=0
r15=100000080
r14=ffffffff
r13=100002130
r12=2d000000500
r11=246
r10=0
r9=0
r8=17
rdx=4414fc
rcx=0
rbx=1
rax=17
int_no=6
errcode=0
rip=4375a0
cs=2b
rflags=202
userrsp=7ffffffd88
ss=23
process: pape
6 0

[ffwff]

Can you compile the kernel with CPU exception handling disabled (passing NO_CPUEX=1 to make) and show me at which function did it break?

[spencerking]

Doubtful, but I will try. I never did get the project building.

[ffwff]

This isn't related to this issue, so could you open another one and tell me more about the build process and where it fails?

[ghost]

Okay, the image currently doesn't run in debug mode so I couldn't get any function-name diagnostics, but here's what I got with release mode. (typing pape /share/papes/pape.png in cterm) The bottom three lines were printed and lilith froze.

scorbie@home:~/Projects/lilith$ make run_img RELEASE=1 NO_CPUEX=1
CR src/main.cr
LD64 build/main.o build/boot.o => build/kernel64
objcopy --output-target=binary build/kernel64 build/kernel64.bin
AS32 src/asm/bootstrap.s
i686-elf-as src/asm/bootstrap.s -o build/bootstrap.o
LD build/bootstrap.o => build/kernel
qemu-system-x86_64 -kernel build/kernel -monitor telnet:127.0.0.1:7777,server,nowait -m 512M -serial stdio -no-shutdown -no-reboot -vga std -device intel-hda,debug=9 -device hda-duplex,cad=0,debug=9 -hda disk.img
WARNING: Image format was not specified for 'disk.img' and probing guessed raw.
         Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
         Specify the 'raw' format explicitly to remove the restrictions.
qemu-system-x86_64: warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5]
hda-duplex: hda_audio_init: cad 0
hda-duplex: dac: format: 2 x PCM-S16 @ 48000 Hz
hda-duplex: adc: format: 2 x PCM-S16 @ 48000 Hz
hda-duplex: hda_audio_reset
hda-duplex: hda_audio_reset
intel-hda: intel_hda_update_irq: level 0 [intx]
no handler for 14
no handler for 15
no handler for 15
unknown device type!
no handler for 1
no handler for 12
multiple backgrounds
retval == -1
casting nil to not-nil!

I'm not sure if this is helpful enough.

[ffwff]

The window manager currently doesn't support multiple background windows. I may need to add a communication pipe to pape in order to change backgrounds.