RE: [ECOS] Putting interrupt/exception handling codes in different section

[Ho Shui Choy Stanley PS03B NCS <scho at ncs dot com dot sg>]

I have done that by using the ".sram" section defined in "arm.ld" but I'm
having error building.

Most errors are at the following statment

in ".sram"
      ldr     sp,.__undef_exception_stack     // get good stack

in ".text"
	PTR(__undef_exception_stack)
	

-----Original Message-----
From: Jonathan Larmour [mailto:jlarmour@redhat.com]
Sent: Tuesday, May 15, 2001 21:08
To: Ho Shui Choy Stanley PS03B NCS
Cc: Ecos-Discuss (E-mail)
Subject: Re: [ECOS] Putting interrupt/exception handling codes in
different section


Ho Shui Choy Stanley PS03B NCS wrote:
> 
> Currently, the .text section of the codes resides in external flash
memory.
> As the access speed of the external flash is slow, I like to move certain
> part of the text section to the internal memory for better performance.
> 
> I like to separate the interrupt and exception handling codes from the
> ".text" section to another section in the internal memory. Is possible to
do
> that? How can I do that?

It should just be a case of adding 

.section ".mysection","ax" before the exception handling code in the
architecture vectors.S and then add a section in the memory layout and
architecture .ld file. The linker should deal with the relocations. Don't
forget to put a ".text" back after the code you've relocated.

Jifl
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