RE: [ECOS] --entry= (slightly off topic)

[Gary Thomas <gthomas at redhat dot com>]

On Fri, 2001-09-21 at 08:14, Trenton D. Adams wrote:
> I don't want an object in ELF format at the end.  I use objcopy to copy
> to binary format.  This is going to be the boot code that's loaded into
> the board for flashing it with RedBoot or something like that.
> 
> In this case do I want a linker script?  I'm not remapping any memory or
> anything like that.
> 

Look at the build rules for RedBoot - we do exactly this all the time.
An image is created, destined for either RAM or ROM and then "munged"
into the most appropriate format.  Binary is the most common case as 
this is exactly what you want to go into the ROM [image].

> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com
> [mailto:ecos-discuss-owner@sources.redhat.com] On Behalf Of Fabrice
> Gautier
> Sent: Thursday, September 20, 2001 4:31 PM
> To: 'Trenton D. Adams'; 'eCos Discussion'
> Subject: RE: [ECOS] --entry= (slightly off topic)
> 
> 
> > -----Original Message-----
> > From: Trenton D. Adams [mailto:tadams@theone.dnsalias.com]
> > Subject: [ECOS] --entry= (slightly off topic)
> > 
> > However, it ends up like this.
> > 00008000 <Prepare_To_Flash-0xc>:
> >     8000:       e3a0d201        mov     sp, #268435456  ; 0x10000000
> >     8004:       e38ddc96        orr     sp, sp, #38400  ; 0x9600
> >     8008:       ebffffff        bl      800c <Prepare_To_Flash>
> > 
> > 8000 is the default entry point, and that's not what I want.  I want
> > 0x00000000.
> 
> Maybe what you want is to use a linker script. Use :  -Ttarget.ld 
> 
> arm-elf-gcc.exe -Ttarget.ld -nostdlib -nostartfiles -O1 -Wl,--entry=0x0
> stack_manager.s bootcode-J3-rev4.c
> 
> Where target.ld is a linker script such as the one providd by eCos hal.
> 
>   Fabrice