ROMable application with gnuh8-elf toolchain

[Bill Gatliff]

Stefan:


I have a brief tutorial on linker scripts here:

http://billgatliff.com/articles/gnu/gcc-whitepaper.html/index.html

It's an excerpt from my training manuals.


b.g.

-- 
Bill Gatliff
Embedded GNU and Linux development, training
bgat@billgatliff.com




Stefan Schober wrote:

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>
> Hi there,
>
> I'm looking for any kind of information (or examples) on how to produce
> romable H8S applications using an ELF tool chain.
>
> I'm not that aware with the ELF format and therefor I'm not sure, which
> sections mentioned in ld's linker script should be placed to which
> memory regions.
> Currently I'm planning to set up a memory layout consisting of those
> regions:
>
> MEMORY
> {
> ~    /* interrupt vectors  */
> ~    vectors : o = 0x000000, l = 0x000200
>
> ~    /* normal ram  */
> ~    ram     : o = 0xff7000, l = 0x007fbc
>
> ~    /* normal rom  */
> ~    rom     : o = 0x000200, l = 0x05fe00
>
> ~    /* The stack starts at the top of main ram.  */
> ~    topram  : o = 0xffefbc, l = 0x000004
>
> ~    /* At the very top of the address space is the 8-bit area.  */
> ~    eight   : o = 0xffffc0, l = 0x000040
> }
>
> Where can I find the information on how to spread the program's sections
> to these memory regions? Which memory sections should have a VMA
> located anywhere in RAM, but have to be loaded to ROM (LMA != VMA)?
>
> Or should I perhaps refrain from using an ELF tool chain and better set
> up a COFF tool chain?
>
> thanks a lot
> ~    stefan
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