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fPIC with alignment

Note: This was originally posted on 18th July 2012 at http://forums.arm.com

Hi

I am trying to create a PIC elf image with --apcs=/fpic compiler option and --fpic linker option. It creates a PIC image alright with different load regions for code and data, but I would like to have them 4K aligned so that I can map those with appropriate RX and RW permissions. Any idea how can force the alignment?

Thanks in advance.

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Peter Harris over 12 years ago

Note: This was originally posted on 18th July 2012 at http://forums.arm.com

With the ARM tools this is achieved using the scatter loader:

http://infocenter.arm.com/help/topic/com.arm.doc.dui0474g/CHDIEAJD.html

For GNU tools you'll need to create a linker script (similar concept the ARM scatter loading scripts, but different syntax)

http://www.delorie.com/gnu/docs/binutils/ld_6.html

HTH,
Iso
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Peter Harris over 12 years ago

Note: This was originally posted on 18th July 2012 at http://forums.arm.com

With the ARM tools this is achieved using the scatter loader:

http://infocenter.arm.com/help/topic/com.arm.doc.dui0474g/CHDIEAJD.html

For GNU tools you'll need to create a linker script (similar concept the ARM scatter loading scripts, but different syntax)

http://www.delorie.com/gnu/docs/binutils/ld_6.html

HTH,
Iso
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