* RE: Linkerscript
@ 2004-10-08 7:45 Meulendijks, J.
0 siblings, 0 replies; 3+ messages in thread
From: Meulendijks, J. @ 2004-10-08 7:45 UTC (permalink / raw)
To: 'Nick Clifton', Meulendijks, J.
Cc: 'binutils@sources.redhat.com'
It is defined as:
#define SECTION_vectors(_region_, _vma_, _lma_) \
.vectors _vma_ : _lma_ \
{ FORCE_OUTPUT; KEEP(*(.vectors)) } \
> _region_
And FORCE_OUTPUT = _. = ._
But if FORCE_OUTPUT is left away it still will generate a output in my
opinion....
-----Original Message-----
From: Nick Clifton [mailto:nickc@redhat.com]
Sent: vrijdag 8 oktober 2004 09:22
To: Meulendijks, J.
Cc: 'binutils@sources.redhat.com'
Subject: Re: Linkerscript
Hi jeroen,
> I have a question about the linkerscript automatically generated by eCos.
For which particular target ?
> On a
> couple of lines the expression ". = .;" is used. What is de meaning of this?
> What does it do?
Nothing - it is a null operation.
> Example:
> .vectors 0x00400000 : { . = .; KEEP(*(.vectors)) } > ram
The source for this particular linker script appears to be eCos
specific, since I did not find it in the binutils repository. My guess
would be that in the original source there is an extra expression which
can be conditionally included as part of this assignment. eg something
like:
.vectors 0x00400000 : { . = . $(VECTOR_OFFSET);
where VECTOR_OFFSET might be defined as "" under some circumstances and
as say "+ 0x1000" under other circumstances. (I am just guessing here).
Cheers
Nick
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Linkerscript
2004-10-08 7:05 Linkerscript Meulendijks, J.
@ 2004-10-08 7:17 ` Nick Clifton
0 siblings, 0 replies; 3+ messages in thread
From: Nick Clifton @ 2004-10-08 7:17 UTC (permalink / raw)
To: Meulendijks, J.; +Cc: 'binutils@sources.redhat.com'
Hi jeroen,
> I have a question about the linkerscript automatically generated by eCos.
For which particular target ?
> On a
> couple of lines the expression ". = .;" is used. What is de meaning of this?
> What does it do?
Nothing - it is a null operation.
> Example:
> .vectors 0x00400000 : { . = .; KEEP(*(.vectors)) } > ram
The source for this particular linker script appears to be eCos
specific, since I did not find it in the binutils repository. My guess
would be that in the original source there is an extra expression which
can be conditionally included as part of this assignment. eg something
like:
.vectors 0x00400000 : { . = . $(VECTOR_OFFSET);
where VECTOR_OFFSET might be defined as "" under some circumstances and
as say "+ 0x1000" under other circumstances. (I am just guessing here).
Cheers
Nick
^ permalink raw reply [flat|nested] 3+ messages in thread
* Linkerscript
@ 2004-10-08 7:05 Meulendijks, J.
2004-10-08 7:17 ` Linkerscript Nick Clifton
0 siblings, 1 reply; 3+ messages in thread
From: Meulendijks, J. @ 2004-10-08 7:05 UTC (permalink / raw)
To: 'binutils@sources.redhat.com'
Hi all,
I have a question about the linkerscript automatically generated by eCos. On a
couple of lines the expression _. = .;_ is used. What is de meaning of this?
What does it do?
Example:
.vectors 0x00400000 : { . = .; KEEP(*(.vectors)) } > ram
Thanks in advance!
Jeroen
^ permalink raw reply [flat|nested] 3+ messages in thread
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