[OpenBIOS] Faulty Qemu SPARC64 IDE emulation?

Nick Couchman Nick.Couchman at seakr.com
Wed Dec 9 20:18:13 CET 2009

>>> On 2009/12/09 at 11:56, Mark Cave-Ayland <mark.cave-ayland at siriusit.co.uk>
> Nick Couchman wrote:
>> Curiously the PC location for the error has changed - according to the output 
> above, here's the gdb location:
>> (gdb) l *0x00000000ffd1bad0
>> 0xffd1bad0 is in ob_ide_insw (./target/include/asm/io.h:165).
>> 160	{
>> 161		uint16_t *b = (uint16_t *) buf;
>> 162	
>> 163		while (ns > 0) {
>> 164			*b++ = in_le16(port);
>> 165			ns--;
>> 166		}
>> 167	}
>> 168	
>> 169	static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
>> -Nick
> Okay - I've just committed a "fix" for the missing alarm word since 
> OpenBIOS wasn't removing the parameters from the stack as alarm should. 
> Now I get slightly further with Milax, but I too am seeing a crash in 
> the IDE inteface code trying to load a file. It seems that the crash 
> manages to kill the Qemu instance too.

Would any of the Qemu debugging in op_helper.c provide any more information?  Seems like most of that debugging is for CPU and memory management, and now for disk or network I/O.


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