[sdcc-devel] [ sdcc-Bugs-1771944 ] Absolute addressing of data area.

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Bugs item #1771944, was opened at 2007-08-10 21:03
Message generated for change (Comment added) made by spth
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Category: linker
Group: known bugs
Status: Open
Resolution: Wont Fix
Priority: 5
Private: No
Submitted By: lelad (lelad1)
Assigned to: Nobody/Anonymous (nobody)
Summary: Absolute addressing of data area.

Initial Comment:
Sample of code xxx.c:
data at 0x78 unsigned char x=0;
void main(void)
{
x=1;
}

Exact command used to run SDCC on this sample code:
sdcc --model-large  --xram-size 0x1f00 --iram-size 0xff  --code-size 0x6000 --code-loc 0x8000 --xram-loc 0xe100 --no-pack-iram --stack-loc 0x80  xxx.c

 SDCC version:
SDCC : mcs51/gbz80/z80/avr/ds390/pic16/pic14/TININative/xa51/ds400/hc08 2.7.3 #4896 (Aug  8 2007) 

Error messages:
ASlink-Error-Internal memory overlap starting at 0x00.
?ASlink-Warning-19 bytes in data memory wasted.  SDCC link could use: --data-loc 0xffffffed

e-mail:
les...@po...



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>Comment By: Philipp Klaus Krause (spth)
Date: 2010-09-26 15:47

Message:
Over three years have passed since the last comment on this bug. sdcc
--help still shows --no-pack-iram and does not mention it being
deprecated.

Shouldn't --no-pack-iram be marked deprecated by now or, alternatively,
this bug report be reopened?

Philipp


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Comment By: Maarten Brock (maartenbrock)
Date: 2007-09-03 22:34

Message:
Logged In: YES 
user_id=888171
Originator: NO

When you need to reserve some iram for a monitor or other tool or library,
you can do so with the normal packing of iram too. One can use --data-loc
and --iram-size to limit the used area. Or one can reserve space in an
absolute segment in assembly. I see no reason to keep the old way around
and maintain both versions.

Maarten

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Comment By: lelad (lelad1)
Date: 2007-09-02 20:26

Message:
Logged In: YES 
user_id=1300353
Originator: YES

I think, it is not good idea to mark --no-pack-iram option deprecated.
This option is very useful for people using test-boards with monitor which
uses some cells of iram. So it is very important to fix bug described
above.

Lelad 

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Comment By: Maarten Brock (maartenbrock)
Date: 2007-09-01 11:16

Message:
Logged In: YES 
user_id=888171
Originator: NO

The problem is related to --no-pack-iram. If you do not use this switch
the problem disappears. I also see no reason to use --no-pack-iram in any
circumstance.

Therefor I propose not to fix this bug, but instead mark --no-pack-iram
deprecated.

Maarten

----------------------------------------------------------------------

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