On Wed, Feb 27, 2008 at 02:59:41PM +0100, Igor Bukanov wrote:
> Hi Sam,
>
> I have tried to use __attribute__((section("xxx")), but it seems there
> are no linker options to force a particular alignment for a section
> for ELF. All those nice alignment options refers to Windows:
>
> --section-alignment
> Sets the section alignment. Sections in memory will
> always begin at addresses which are a multiple of this number.
> Defaults to 0x1000. [This option is specific to the i386 PE targeted
> port of the linker]
>
> I can only force the section to start on a particular address when
> loaded. Then it works. But this is not what as I have no idea what the
> address should be.
>
> Have I missed something?
You need to provide your own linker script and then you can
adjust '.' to a page aligned address.
Sample from the kernel linker script:
/* read-only */
.text : AT(ADDR(.text) - LOAD_OFFSET) {
. = ALIGN(4096);
*(.text.page_aligned)
ld can generate the current default linekr script that you can base
your changes upon.
Sam
