[Qemu-devel] qemu-system-sh4 broken again.

[Rob Landley <rob@landley.net>]

Using qemu-system-sh4, this commit:

e1c09175bc00dd8dfb2ad1b26e1858dcdc109b59 is first bad commit
commit e1c09175bc00dd8dfb2ad1b26e1858dcdc109b59
Author: Gerd Hoffmann <kraxel@redhat.com>
Date:   Tue Dec 8 13:11:44 2009 +0100

    zap serial_monitor_mux
    
    The logic in this code obviously predates the multiple monitor
    capability of qemu and looks increasingly silly these days.
    
    I think the intention of this piece of code is to get a reasonable
    default for the -nographic case: have monitor and serial line muxed
    on stdio.
    
    With the new default_serial and default_monitor variables we have now
    doing just that became much easier ;)
    
    Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
    Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Made "-serial stdio" now do:

  chardev: opening backend "stdio" failed
  qemu: could not open serial device 'stdio': Inappropriate ioctl for device

Am I using it wrong?

If I don't override it, I instead get:

  long read to SH7750_WCR1_A7 (0x000000001f800008) ignored
  long read to SH7750_WCR2_A7 (0x000000001f80000c) ignored
  long read to SH7750_WCR3_A7 (0x000000001f800010) ignored
  long read to SH7750_MCR_A7 (0x000000001f800014) ignored
  long read to SH7750_MCR_A7 (0x000000001f800014) ignored
  sh_serial: unsupported read from 0x10
  qemu-system-sh4: /home/landley/qemu/git/hw/sh_serial.c:285:
    sh_serial_ioport_read: Assertion `0' failed.

Is anybody out there actually using the sh4 emulator?  I've gotten it to work 
several times before on various random git snapshots, but never in a release 
version...

I'd point to the original message that told me to use -serial stdio for qemu-
system-sh4, but unfortunately your mailing list archive is on lists.gnu.org 
and their robots.txt tells Google not to index them, so your mailing list 
archives aren't googleable.  In fact, there's exactly one hit on the whole of 
lists.gnu.org for "qemu":

  http://www.google.com/#q=site%3Alists.gnu.org+qemu

Rob
-- 
Latency is more important than throughput. It's that simple. - Linus Torvalds