svn commit: r203696 - in head: lib/libc/sys sys/kern sys/sys

[Marcel Moolenaar]

On Feb 9, 2010, at 11:17 AM, Marcel Moolenaar wrote:

> Action items:
> 
>>>> - vmspace should be referenced by vmspace_acquire_ref()
>>>> - vm_map should be read-locked before iterating the map entries.
> 
> I'll implement it and send a patch for review to avoid unnecessary
> repository churn...

Please review attached patch. I have a sample session of how
a debugger can use the information (see XXX lines):

hob% /usr/obj/nfs/bsddbg/trunk/bdb/bdb images/abort/abort
[cursor=0x2000000000000560:0]
bdb> run
process 1539 created
process 1539 stopped with signal 5
XXX: 1: 0x2000000000000000-0x2000000000001fff, 5, 0 37 `/nfs/bsddbg/trunk/images/abort/abort`
XXX: 2: 0x2000000000010000-0x2000000000011fff, 3, 0 0 ``
XXX: 3: 0x2000000040010000-0x2000000040077fff, 5, 0 21 `/libexec/ld-elf.so.1`
XXX: 4: 0x2000000040086000-0x2000000040089fff, 3, 0x66000 21 `/libexec/ld-elf.so.1`
XXX: 5: 0x200000004008a000-0x2000000040091fff, 3, 0 0 ``
XXX: 6: 0x8000000000000000-0x800000000001ffff, 3, 0 0 ``
XXX: 7: 0x9ffffffffffe0000-0x9fffffffffffffff, 3, 0 0 ``
  0x200000004001c560: { // MFB;
>         alloc   r2 = ar.pfs, 0x0, 0x3, 0x3, 0x0
          nop.f   0x0
          nop.b   0x0 ;;
  }
[cursor=0x200000004001c560:0]
bdb> step
process 1575 stopped with signal 5
  0x200000004001c560: { // MFB;
          alloc   r2 = ar.pfs, 0x0, 0x3, 0x3, 0x0
>         nop.f   0x0
          nop.b   0x0 ;;
  }
[cursor=0x200000004001c560:1]
bdb> continue
process 1539 stopped with signal 6
XXX: 1: 0x2000000000000000-0x2000000000001fff, 5, 0 37 `/nfs/bsddbg/trunk/images/abort/abort`
XXX: 2: 0x2000000000010000-0x2000000000011fff, 3, 0 0 ``
XXX: 3: 0x2000000040010000-0x2000000040077fff, 5, 0 21 `/libexec/ld-elf.so.1`
XXX: 4: 0x200000004007e000-0x2000000040085fff, 3, 0x6000 0 ``
XXX: 5: 0x2000000040086000-0x2000000040089fff, 3, 0x66000 21 `/libexec/ld-elf.so.1`
XXX: 6: 0x200000004008a000-0x2000000040099fff, 3, 0 0 ``
XXX: 7: 0x200000004009c000-0x20000000402e1fff, 5, 0 15 `/lib/libc.so.7`
XXX: 8: 0x20000000402e2000-0x20000000402effff, 0, 0x246000 0 ``
XXX: 9: 0x20000000402f0000-0x20000000402fdfff, 3, 0x244000 15 `/lib/libc.so.7`
XXX: 10: 0x20000000402fe000-0x2000000040319fff, 3, 0x262000 0 ``
XXX: 11: 0x2000000040328000-0x2000000040339fff, 3, 0xe000 0 ``
XXX: 12: 0x8000000000000000-0x800000000001ffff, 3, 0 0 ``
XXX: 13: 0x9ffffffffffe0000-0x9fffffffffffffff, 3, 0 0 ``
  0x20000000402a0c40: { // MBB;
>         cmp.eq  p0, p6 = r0, r10
  (p6)    br.sptk.few 20000000400ded00
          br.ret.sptk.few rp ;;
  }
[cursor=0x20000000402a0c40:0]
bdb> 

-- 
Marcel Moolenaar
xcllnt at mac.com


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