[sdcc-devel] [ sdcc-Support Requests-1831117 ] section delimiters

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Support Requests item #1831117, was opened at 2007-11-13 15:45
Message generated for change (Comment added) made by maartenbrock
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Category: None
Group: None
Status: Open
Priority: 5
Private: No
Submitted By: Stas Sergeev (stsp)
Assigned to: Nobody/Anonymous (nobody)
Summary: section delimiters

Initial Comment:
Hi.

gcc defines symbols like __data_load_start, __etext
etc, so that the program can find out the addresses
and the sizes of its sections.
Does sdcc have something similar?
And if not - this should be a Feature Request.
At least I wan't able to find the like symbols in
the map file.

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>Comment By: Maarten Brock (maartenbrock)
Date: 2007-11-14 21:34

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Stas,

Unless I fully misunderstand your request, the symbols in the RFE Patryk
pointed to you are exactly what you're looking for.

The map file already has the symbols representing the start and length of
the various segments. Unfortunately these can currently only be accessed
from assembly and not from C. That's why Patryk asked them to be renamed in
the RFE. I'm sure he would also like them in a header file, but that's an
extra.

Maarten

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Comment By: Stas Sergeev (stsp)
Date: 2007-11-14 20:03

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Thanks for the pointer.
As far as I understand, you only
want the declarations in the header
files for the symbols already present.
What I want is a new symbols. I need
the symbols in the beginning and the
end of the code and data sections.
The internal symbols you pointed, are
unfortunately of no use for me.

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Comment By: Patryk (patryks)
Date: 2007-11-14 09:15

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See my request:
http://sourceforge.net/tracker/?func=detail&atid=350599&aid=1716427&group_id=599
Put a comment there and maybe it will brought more attention to some
developer.

Other symbols found in main.asm:
__sdcc_external_startup
__interrupt_vect
__sdcc_gsinit_startup
__sdcc_program_startup
__start__stack
__mcs51_genXINIT
__mcs51_genXRAMCLEAR
__mcs51_genRAMCLEAR
__sdcc_program_startup


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