OK, my echo stop <>/prog/33/dbgctl was wrong.
It opens /prog/33/dbgctl for writing and reading, but only reads from
it, output still goes to the standard output.
Here what I came up with next:
echo stop <>[5]/prog/4/dbgctl >[1=5]
This opens /prog/4/dbgctl RW on FD 5, and then redirects the stan
For the sake of people stumbling on this post a long time from now:
I solved my immediate problem by running:
echo stop <>/prog/33/dbgctl
The <> redirection opens the file for reading and writing, not just for
writing, and solves the "permission denied" issue.
However, Inferno's sh(1) man pages
Thanks Ron :)
In DIS assembly, this is written as jmp $0, which can be changed to jmp
$1 when I want to disable the loop and spare myself from decreasing all
PC offsets in the code.
Now, I have another problem: /prog/N/dbgctl can't be written to :/
Here is how to reproduce:
Save the file belo
I put a
1:jump 1
At the start, when I need to do this and have no other way.
On Mon, Jul 22, 2024 at 01:28 Edouard Klein wrote:
> Hi !
>
> I'm writing dis assembly, and I would like to debug my program right
> from the entrypoint.
>
> I intend to use the /prog filesystem for that, thanks to
Hi !
I'm writing dis assembly, and I would like to debug my program right
from the entrypoint.
I intend to use the /prog filesystem for that, thanks to which one can
stop a program by echoing "stop" to dbgctl file.
However, what I need to do is stop the program at the very start.
I have multipl
