Re: C Startup Code

[Andrew Pines <apines at cosmodog dot com>]

In the linkfile, something along the lines of:
MEMORY
{
	ROM  : ORIGIN = 0x00000000, LENGTH = 0x020000
	RAM  : ORIGIN = 0x00020000, LENGTH = 0x001000
}

will cause the linker to fail if the size of a section is exceeded.

  -Andrew



John Clarke wrote:
> 
> On Tue, Apr 17, 2001 at 11:19:41PM -0500, Andrew Pines wrote:
> 
> > SECTIONS
> > {
> >      .text :
> >      {
> >           _text = .;           /* start of text */
> >           *(.rodata)           /* read only data (in ROM) */
> >           *(.text)             /* code */
> >           _etext = .;          /* end of text */
> >      } >ROM
> >
> >      .data : AT (ADDR(.text) + SIZEOF(.text))   /* place initialized
> > data after read only data in ROM, but reference to it in RAM */
> >      {
> >           _data = .;           /* RAM location of initialized data */
> >           *(.data)
> >           _edata = .;          /* end of data, used to copy initialized
> > data at start up */
> >      } >RAM
> 
> What happens if SIZEOF(.text) + SIZEOF(.data) is greater than the size
> of the ROM area?  Is there any way to have the linker produce a warning
> or an error?
> 
> Cheers,
> 
> John
> --
> whois !JC774-AU@whois.aunic.net
> 
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-- 
Andrew Pines
apines@cosmodog.com
http://www.cosmodog.com

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