.ARM.exidx mysteries

[Sebastian Huber <sebastian dot huber at embedded-brains dot de>]

Hello,

I try to update my linker command file to support the recent AAPCS and ARM ELF
standard.  There is a behavior that is a mystery to me.  Why do I get a warning
here:

	.ARM.exidx : {
		__exidx_start = .;
		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
		__exidx_end = .;
	} > REGION_RODATA AT > REGION_RODATA_LOAD

but not here:

	__exidx_start = .;
	.ARM.exidx : {
		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
	} > REGION_RODATA AT > REGION_RODATA_LOAD
	__exidx_end = .;

?

The warning is:

warning: sh_link not set for section `.ARM.exidx'

The address of __exidx_start and __exidx_end is equal in both cases.

Have a nice day!

-- 
Sebastian Huber, embedded brains GmbH

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