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Re: Variable page size for ELF
- To: ian@zembu.com (Ian Lance Taylor)
- Subject: Re: Variable page size for ELF
- From: hjl@lucon.org (H.J. Lu)
- Date: Sat, 10 Jul 1999 20:47:58 -0700 (PDT)
- Cc: binutils@sourceware.cygnus.com
>
> Date: Sat, 10 Jul 1999 19:24:37 -0700 (PDT)
> From: hjl@lucon.org (H.J. Lu)
>
> I got a request to support variable page size for ELF. It turned out
> not too hard to implement. Is that interesting to anyone? Should I
> send in my patch which adds "--page-size SIZE" to ld?
>
> It's hard for me to imagine an application for that. However, if
> there is some reason that it is useful, in a way that can not be
> handled by simply changing the linker script, then I have no objection
The problem is get_elf_backend_data (abfd)->maxpagesize in BFD and
MAXPAGESIZE in linker script. I did
1. Add functions to get/set get_elf_backend_data (abfd)->maxpagesize.
2. Made MAXPAGESIZE in linker script a variable.
Now the ELF linker script has
MAXPAGESIZE != 0 ? MAXPAGESIZE : ${MAXPAGESIZE}
in place of ${MAXPAGESIZE}.
> to such an option. At first glance it seems like anything you can do
> by changing the page size you can do by changing the linker script,
> using the PHDRS option.
>
How does PHDRS work?
--
H.J. Lu (hjl@gnu.org)