(user land) Core dumping, across the universe

Hi,

Well the good news is that dumping core Just Works, so we're at least part of the way towards having Emacs running ;-)

The bad news is that the core dumps are rather funny looking.

My very simple (dereference a bad pointer) test program produces the following dump:

avalanche:~# ls -l core
-rw-------    1 root     root     268500992 Sep 28 12:21 core
avalanche:~# objdump -x core

core: file format elf32-hppa
core
architecture: hppa1.0, flags 0x00000000:

start address 0x00000000

Program Header:

    NOTE off    0x00000174 vaddr 0x00000000 paddr 0x00000000 align 2**0
         filesz 0x00000714 memsz 0x00000000 flags ---
    LOAD off    0x00001000 vaddr 0x00001000 paddr 0x00000000 align 2**12
         filesz 0x00000000 memsz 0x00001000 flags r-x
    LOAD off    0x00001000 vaddr 0x00002000 paddr 0x00000000 align 2**12
         filesz 0x00001000 memsz 0x00001000 flags rwx
    LOAD off    0x00002000 vaddr 0x20000000 paddr 0x00000000 align 2**12
         filesz 0x10000000 memsz 0x10000000 flags rwx
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^

Wow, look at the size of that stack segment! We *really* need to have this be dynamically growable instead of just mapping a whole gigabyte in the middle of process space.

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