Re: riscv32, qemu-user: semi-functional, what goes wrong?

[Chet Ramey]

On 8/31/23 7:02 PM, Andreas K. Huettel wrote:
> Dear all,
>
> I'm trying to get qemu usermode emulation of riscv32 working.
> I managed to cross-build a linux system, and have it mostly rebuild itself
> (including gcc 3-phase bootstrap), however, something is broken in bash.

Is there anything wrong beyond these failed tests? Can you run it
interactively?


> run-builtins
> warning: some of these tests may fail if process substitution has not
> warning: been compiled into the shell or if the OS does not provide
> warning: /dev/fd.
> 88,89c88,89
> < /var/tmp/portage/app-shells/bash-5.2_p15-r6/work/bash-5.2/bash
> < /var/tmp/portage/app-shells/bash-5.2_p15-r6/work/bash-5.2/bash
> ---
> > specialname
> > -specialname

This means that for some reason `exec -a' is not working to replace
argv[0] with the supplied argument. execve(2) might be undoing that.

> run-execscript
> warning: the text of a system error message may vary between systems and
> warning: produce diff output.
> warning: UNIX versions number signals differently.
> warning: If output differing only in line numbers is produced, please
> warning: do not consider this a test failure.
> warning: if the text of the error messages concerning `notthere' or
> warning: `/tmp/bash-notthere' not being found or `/' being a directory
> warning: produce diff output, please do not consider this a test failure
> warning: if diff output differing only in the location of the bash
> warning: binary appears, please do not consider this a test failure
> 24d23
> < trap -- 'echo USR1' SIGUSR1
> 25a25
> > trap -- 'echo USR1' SIGUSR1
> 30d29
> < trap -- 'echo USR1' SIGUSR1
> 31a31
> > trap -- 'echo USR1' SIGUSR1
> 47c47
> < this is /var/tmp/portage/app-shells/bash-5.2_p15-r6/work/bash-5.2/bash
> ---
> > this is ohio-state

Same.

> < glob2.sub: warning: you do not have the zh_HK.big5hkscs locale installed;
> < glob2.sub: warning: that will cause some of these tests to fail.
> 9d6
> < ./glob2.sub: line 44: warning: setlocale: LC_ALL: cannot change locale 
> (zh_HK.big5hkscs): No such file or directory

The warning is valid and causes test failures.



> run-heredoc
> warning: UNIX versions number signals and schedule processes differently.
> warning: If output differing only in line numbers is produced, please
> warning: do not consider this a test failure.
> 129c129
> < /bin/grep: *.c: No such file or directory
> ---
> > grep: *.c: No such file or directory

Spurious, but it indicates that something is modifying argv[0] in execve.


> run-posixexp
> 309d308
> < ./posixexp.tests: line 98: syntax error: unexpected end of file

Did you remake y.tab.c? And if so, what version of bison did you use?


> run-read
> warning: please do not consider output differing only in the amount of
> warning: white space to be an error.
> 47c47
> < a
> ---
> > abcde
> 71c71
> < 0
> ---
> > 1
> 74c74
> < 1
> ---
> > timeout 2: ok
> 80c80
> < a
> ---
> > abcde

These indicate that read with a timeout through a pipe or from /dev/tty is
failing (or very slow) for some reason. It's strange, since the data is
already written to the pipe and waiting to be read when the `read' builtin
is called. The /dev/tty tests can be fooled by typeahead while the tests
are running, but that doesn't usually happen.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/