On Mon, 2002-05-20 at 13:32, Beezly wrote:
> o0: fffff80001564000 o1: 0000000000000000 o2: 0000000000ff0000 o3: 000000000000ff00
> Code; 004a2b30 <ext3_lookup+30/c0>
> 00000000 <_PC>:
> Code; 004a2b30 <ext3_lookup+30/c0>
> 0: 94 10 20 00 clr %o2
> Code; 004a2b34 <ext3_lookup+34/c0>
> 4: 15 00 3f c0 sethi %hi(0xff0000), %o2
> Code; 004a2b38 <ext3_lookup+38/c0>
> 8: d2 5f a7 e7 unknown
This is:
ldx [%fp+0x7e7],%o1
> Code; 004a2b3c <ext3_lookup+3c/c0> <=====
> c: d6 02 40 00 ld [ %o1 ], %o3 <=====
gdb says;
Dump of assembler code for function ext3_lookup:
0x4a2b00 <ext3_lookup>: save %sp, -208, %sp
0x4a2b04 <ext3_lookup+4>: mov %i0, %l1
0x4a2b08 <ext3_lookup+8>: add %fp, 0x7e7, %o1
0x4a2b0c <ext3_lookup+12>: ld [ %i1 + 0x78 ], %o2
0x4a2b10 <ext3_lookup+16>: mov %i1, %o0
0x4a2b14 <ext3_lookup+20>: cmp %o2, 0xff
0x4a2b18 <ext3_lookup+24>: bgu %icc, 0x4a2bac <ext3_lookup+172>
0x4a2b1c <ext3_lookup+28>: mov -63, %i0
0x4a2b20 <ext3_lookup+32>: call 0x4a27c0 <ext3_find_entry>
0x4a2b24 <ext3_lookup+36>: mov -13, %i0
0x4a2b28 <ext3_lookup+40>: mov %o0, %o1
0x4a2b2c <ext3_lookup+44>: brz,pn %o1, 0x4a2b94 <ext3_lookup+148>
0x4a2b30 <ext3_lookup+48>: clr %o2
0x4a2b34 <ext3_lookup+52>: sethi %hi(0xff0000), %o2
0x4a2b38 <ext3_lookup+56>: ldx [ %fp + 0x7e7 ], %o1
0x4a2b3c <ext3_lookup+60>: ld [ %o1 ], %o3
0x4a2b40 <ext3_lookup+64>: sethi %hi(0xfc00), %o1
0x4a2b44 <ext3_lookup+68>: sll %o3, 0x18, %l0
we are trying to load **res_dir for ext3_find_entry. Unfortunately, it appears that either *res_dir, or **res_dir is 0 (as %o1 ends up being 0's):(
Beezly
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