On Sat, 10 Feb 2007 00:45:36 +0800 LI Xin <delphij_at_delphij.net> wrote: > >> esi=0000f69b edi=00040170 epb=000003d8 esp=00000358 ^^^ Typo of "ebp"? > >> cs=f000 ds=0040 es=5d18 fs=9fc0 gs=f000 ss=9e17 > >> cs:eip=ec 50 e4 61 58 50 e4 61-58 ee 5a c3 01 00 e4 c3 > >> 12 00 00 41 d0 0c 02 08-80 00 03 00 79 00 79 00 00 > >> ss:esp=77 01 03 2c a1 00 08 2c-fa 02 00 e0 00 00 c0 9f > >> 00 00 4e 80 f3 ee 00 f0-03 24 00 e0 06 02 00 80 > >> BTX halted > >> > >> > >> > > > > It looks like BIOS code at f000:c3d4 is trying to read a word from I/O > > port 0xfffa, and this is causing a GPF when it tries to write to what > > looks like the BIOS data area at 0040:0058; "cursor position for video > > page 4". > > > > 0: ec in (%dx),%al > > 1: 50 push %eax > > 2: e4 61 in $0x61,%al > > 4: 58 pop %eax > > 5: 50 push %eax > > 6: e4 61 in $0x61,%al > > 8: 58 pop %eax > ^^^^^^^^^^^ The stack operations sound > mad to me :-) I think these is probably not what we expect... Indeed, but the address in %esp doesn't look too bad: 0x358. Wouldn't this be inside the first 4K page? -- Ricardo Nabinger Sanchez <rnsanchez_at_{gmail.com,wait4.org}> Powered by FreeBSD "Left to themselves, things tend to go from bad to worse."Received on Fri Feb 09 2007 - 18:06:31 UTC
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