Re: [Qemu-devel] fpu problems with qemu-system-sparc

[Joerg Platte]

Am Montag, 22. Mai 2006 19:51 schrieb Joerg Platte:
> Am Freitag, 19. Mai 2006 21:14 schrieb Blue Swirl:
Hi!

> This re-execution of the same tb could explain my discovered behavior of
> the FPU programs.

A "save_state(dc);" call was missing before all invocations 
of "gen_op_trap_ifnofpu();" in translate.c. Therefore, the whole tb instead 
of the interrupted instruction has been re-executed after a trap. This seems 
to solve my FPU problems. I can provide a patch after I'm able to do a "cvs 
up"...

regards,
Jörg

PS: Booting a normal SPARC-Image with init, hotplug, ... seems to work now 
much better than before. There is no bash segfault any more:

ARCH: SUN4M
TYPE: SparcStation
Ethernet address: 52:54:0:12:34:56
Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (address@hidden). Patching 
kernel for srmmu[Fujitsu Swift]/iommu
63MB HIGHMEM available.
Power off control detected.
Built 1 zonelists
Kernel command line: root=/dev/sda benchscript=crafty console=ttyS0 
video=tcxfb:off skipclock=1000 parallel=2
PID hash table entries: 1024 (order: 10, 16384 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 253572k/261904k available (1960k kernel code, 8072k reserved, 424k 
data, 144k init, 65296k highmem)
Mount-cache hash table entries: 512
NET: Registered protocol family 16
SCSI subsystem initialized
IOMMU: impl 0 vers 4 table 0xfbe80000[262144 B] map [65536 b]
sbus0: Clock 25.0 MHz
dma0: Revision 2
dma1: Revision 2
highmem bounce pool size: 64 pages
Installing knfsd (copyright (C) 1996 address@hidden).
Initializing Cryptographic API
Console: switching to mono PROM 80x25
rtc_init: no PC rtc found
ioremap: done with statics, switching to malloc
zs2 at 0xfd014004 (irq = 44) is a SunZilog
zs3 at 0xfd014000 (irq = 44) is a SunZilog
Console: ttyS0 (SunZilog zs0)
ttyS0 at MMIO 0x0 (irq = 44) is a SunZilog
ttyS1 at MMIO 0x0 (irq = 44) is a SunZilog
io scheduler noop registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
sunlance.c:v2.02 8/24/03 Miguel de Icaza (address@hidden)
SunLance: using auto-carrier-detection.
SunLance: warning: overriding option 'tpe-link-test?'
SunLance: warning: mail any problems to address@hidden
eth0: LANCE 52:54:00:12:34:56
esp0: IRQ 36 SCSI ID 7 Clk 20MHz CCYC=50000 CCF=4 TOut 167 NCR53C90(esp100)
ESP: Total of 1 ESP hosts found, 1 actually in use.
scsi0 : Sparc ESP100 (NCR53C90)
  Vendor: QEMU      Model: QEMU HARDDISK     Rev:
  Type:   Direct-Access                      ANSI SCSI revision: 01
  Vendor: QEMU      Model: QEMU HARDDISK     Rev:
  Type:   Direct-Access                      ANSI SCSI revision: 01
  Vendor: QEMU      Model: QEMU CDROM        Rev:
  Type:   CD-ROM                             ANSI SCSI revision: 01
sda : sector size 0 reported, assuming 512.
SCSI device sda: 1 512-byte hdwr sectors (0 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
SCSI device sda: 300001 512-byte hdwr sectors (154 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
 sda: unknown partition table
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
sdb : sector size 0 reported, assuming 512.
SCSI device sdb: 1 512-byte hdwr sectors (0 MB)
sdb: asking for cache data failed
sdb: assuming drive cache: write through
SCSI device sdb: 512001 512-byte hdwr sectors (262 MB)
sdb: asking for cache data failed
sdb: assuming drive cache: write through
 sdb: unknown partition table
Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0
sr0: scsi3-mmc drive: 0x/0x caddy
Uniform CD-ROM driver Revision: 3.20
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
Attached scsi generic sg1 at scsi0, channel 0, id 1, lun 0,  type 0
Attached scsi generic sg2 at scsi0, channel 0, id 2, lun 0,  type 5
rtc_sun_init: Registered Mostek RTC driver.
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
input: Sun Type 5 keyboard on zs/serio0
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 144k freed
INIT: version 2.86 booting
Activating swap.
System time was Wed May 22 21:08:21 UTC 1974.
Setting the System Clock using the Hardware Clock as reference...
System Clock set. System local time is now Wed May 22 21:08:25 UTC 1974.
Checking all file systems...
fsck 1.37 (21-Mar-2005)
WARNING: Your /etc/fstab does not contain the fsck passno
        field.  I will kludge around things for you, but you
        should fix your /etc/fstab file as soon as you can.

Setting kernel variables ...
... done.
Mounting local filesystems...
Cleaning /tmp /var/run /var/lock.
Starting hotplug subsystem:
   pci
cat: /sys/bus/pci/devices/*/class: No such file or directory
cat: /sys/bus/pci/devices/*/vendor: No such file or directory
cat: /sys/bus/pci/devices/*/device: No such file or directory
cat: /sys/bus/pci/devices/*/subsystem_vendor: No such file or directory
cat: /sys/bus/pci/devices/*/subsystem_device: No such file or directory
Bad PCI agent invocation
   pci      [success]
   usb
   usb      [success]
   isapnp
   isapnp   [success]
   ide
   ide      [success]
   input
/etc/hotplug/input.agent: arith: syntax error: "0x010"

   input    [success]
   scsi
modprobe: Can't open dependencies file /lib/modules/2.6.13-sam/modules.dep (No 
such file or directory)
     sd_mod: can't be loaded (for disk)
modprobe: Can't open dependencies file /lib/modules/2.6.13-sam/modules.dep (No 
such file or directory)
     sd_mod: can't be loaded (for disk)
modprobe: Can't open dependencies file /lib/modules/2.6.13-sam/modules.dep (No 
such file or directory)
     sr_mod: can't be loaded (for cdrom)
modprobe: Can't open dependencies file /lib/modules/2.6.13-sam/modules.dep (No 
such file or directory)
     sg: can't be loaded (for cdrom)
   scsi     [success]
done.

Setting the System Clock using the Hardware Clock as reference...
System Clock set. Local time: Wed May 22 21:09:37 UTC 1974

Initializing random number generator...done.
INIT: PANIC: segmentation violation! sleeping for 30 seconds.