[ECOS] HELP with target.ld file syntax...SOLUTION

[Richard.von.Lehe@gd-ais.com]

I am interested in this discussion and have a question about your 
solution.  Are you editing the actual target.ld file or are you editing 
the mlt_xxx_xxx_xxx.ldi file that is used to generate the target.ld 
file?  Based on the syntax it looks like you are talking about the 
actual target.ld file.

Is this a safe practice?  In other words, when does the target.ld file 
get re-generated?  If it does, won't you lose your changes?  I don't 
fully know how this all works - hopefully you can straighten me out.

Regards,
Rich von Lehe

Leo McManus wrote:

>Added ram2 to the MEMORY in my target.ld:
>
> MEMORY
>{
>    ram  : ORIGIN = 0x0000000,   LENGTH = 0x800000
>    ram1 : ORIGIN = 0x0000000,   LENGTH = 0x800000
>    ram2 : ORIGIN = 0x80000000,  LENGTH = 0x800000
>}
>
>and my usb_buffs to my SECTIONS
>
>SECTIONS
>{
>...
>...
>...
>    .fixed_vectors 0x20 : { . = .; KEEP (*(.fixed_vectors)) } > ram1
>    .usb_buff 0x80000000 : { . = .; KEEP (*(.usb_buff)) } > ram2
>...
>...
>...
>}
>
>the attribute Gregoire mentioned to my C file:
>
>uchar    ECHO_ENDPOINT_BUFFER_1[1000] __attribute__((section(".usb_buff")));
>uchar    ECHO_ENDPOINT_BUFFER_2[1000] __attribute__((section(".usb_buff")));
>uchar    ECHO_ENDPOINT_RECV_BUFFER[1000] __attribute__((section(".usb_buff")));
>
>and now my map file reads:
>
>.usb_buff       0x80000000      0xbb8
>                0x80000000                . = .
> *(.usb_buff)
> .usb_buff      0x80000000      0xbb8 myFile.o
>                0x80000000                ECHO_ENDPOINT_BUFFER_1
>                0x800003e8                ECHO_ENDPOINT_BUFFER_2
>                0x800007d0                ECHO_ENDPOINT_RECV_BUFFER
>
>Perfect...(before testing :)
>
>Thanks
>
>Leo
>
> --- Gregoire ETIENNE <etiennegr@hotmail.com> wrote: > well, in you'r position,
>I would declare that these buffer belong to a
>  
>
>>custom section with the __attribute__ keyword
>>
>>uchar    ECHO_ENDPOINT_BUFFER_1[1000]
>>__attribute__((section(".zone_name")));
>>
>>This will creat a section .zone_name with ECHO_ENDPOINT_BUFFER_1 in it
>>once the section appears in your map file, adapt your target.ld file to
>>simply place this section to the right address
>>
>>Greg
>>
>>----- Original Message ----- 
>>From: "Leo McManus" <leomcmanusir@yahoo.com>
>>To: "OpenWinCE Project" <openwince-list-request@lists.sourceforge.net>;
>>"EcosMailList EcosList" <ecos-discuss@sources.redhat.com>
>>Sent: Wednesday, April 14, 2004 5:14 PM
>>Subject: [ECOS] HELP with target.ld file syntax
>>
>>
>>Running eCos on ARM Integreator board with ARM720T processor.
>>
>>I have 3 high speed USB OTG buffers which need to be above address
>>0x80000000
>>on an ARM Integrator board, so my USB chip and the ARM can share the memory.
>>
>>uchar    ECHO_ENDPOINT_BUFFER_1[1000];
>>uchar    ECHO_ENDPOINT_BUFFER_2[1000];
>>uchar    ECHO_ENDPOINT_RECV_BUFFER[1000];
>>
>>I am after the syntax to relocate the buffers using my target.ld linker
>>file.
>>
>>
>>Thanks
>>
>>Leo
>>
>>
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>>
>>
>>
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>>    
>>
>
>=====
>Mobile Belgium: +32 (0)495 89 59 65
>Contact in France:  +33 (0)476 275661
>
>Registered Linux User Number 205935.
>http://counter.li.org.
>
>
>	
>	
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