http://sourceware.org/bugzilla/show_bug.cgi?id=12376
--- Comment #9 from dave at hiauly1 dot hia.nrc.ca <dave at hiauly1 dot
hia.nrc.ca> 2011-02-14 17:26:00 UTC ---
On Mon, 14 Feb 2011, ian at airs dot com wrote:
> If that is indeed a limitation of PA Linux, then the only fix is to change the
> default linker script so that the first page of the data segment does not
> overlap with the last page of the text segment. The way to do that is to set
> DATA_ADDR in the appropriate ld/emulparams file. For example,
>
> DATA_ADDR="ALIGN(${MAXPAGESIZE})"
>
> That should always force the data segment to start on a new page.
I'll take another look but I think this only changes the virtual address
of the data segment and not the underlying file organization.
Looking at a typical file compiled for hppa64-hpux with readelf, we have:
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000000000 0x4000000000000000 0x0000000000000000
0x0000000000024bc8 0x0000000000024bc8 R E 8
LOAD 0x0000000000025000 0x8000000100000000 0x0000000000000000
0x0000000000002ef0 0x0000000000003550 RW 8
Note the file offset for the data segment starts on a page boundary.
I think that I need to achieve the same on hppa-linux.
Dave
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