[wip:binutils] Large corefile support
Fri Jan 16 23:46:00 GMT 2004
On the i386, GDB has problems when a corefile is >2gb. The problems are
directly attributable to BFD's use of:
typedef long file_ptr;
fseek (FILE *stream, long int offset, int whence)
The attached, when combined with a BFD/GDB configured / built with
--enable-64-bit-bfd, lets GDB handle corefiles >2gb, per this test:
Of note in the patch are:
- it scatters #ifdef's to handle fseek et.al. variants
Is there a better way of doing this?
- is requires --enable-64-bit-bfd
A 32-bit BFD has a 32-bit signed file_ptr (limiting SEEK_SET to files up
to 2gb). I think the only robust way of handling files larger than that
2gb is to require a 64-bit file_ptr (and hence --enable-64-bit-bfd).
- it turns out that --enable-64-bit-bfd tickles some bugs in GDB's
thread code :-/
- given a 3gb core file, 32-bit objdump isn't very helpful
objdump prints zero's instead of error for the sections contents :-(
Someone might want to look at this.
Anyway, is this "in principal" ok for BFD (assuming I can track down the
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