[Qemu-devel] Regression tests - syscall note

[Fabrice Bellard <fabrice.bellard@free.fr>]

Hi,

I just updated test-i386 so that it includes vm86, exceptions and 
self-modifying code tests. I hope it will help qemu ports on other CPUs.

About the Sparc and Alpha ports, some changes are needed in syscall.c to 
convert errno codes, signal numbers and various syscall bit fields. The 
corresponding code can be extracted from em86 if needed.

A more generic problem is that qemu currently uses 'errno' to get the 
error code of syscalls. The problem is that it is not thread safe as 
qemu does not rely on the glibc pthread library. My current idea is to 
call directly all the syscalls from qemu and to use the real Linux 
return value instead of errno. Is there a better solution ?

Fabrice.