Section information of ADS generated assembly file

Vincent Rubiolo
Wed Jun 4 06:54:00 GMT 2003


It is nice to see other people are dealing with the same pb as I do ;P

Concerning your question, I would recommend converting (by hand or automatically) your
inline asm to GNU syntax instead of generating pure one with armcc and then adapting it.
Indeed, gcc/gas understands ARM opcodes; only the directives are different. IMHO, you'll
save more time trying to adapt a few directives in your original source than the whole
machine-generated asm stuff.

Hopes that helps,

Vincent wrote:
> Hi all,
> I am not sure whether this is the right place to ask my query. [It is more
> related to ADS than to gcc GAS]
> I have an C code with inlined assembly, built for ADS[ARM Development
> Suit]. The inline assembly is not in gcc-syntax. I converted it to pure
> assembly file using the -S option of armcc compiler.
> Now I changed the directives of the file to suit the gcc assembler
> (gas).   The assembled code has something like the following
> =========================================================================================================
> |L1.1236|
>          DCD      ||.constdata$1||
> |L1.1240|
>          DCD      ||.constdata$1|| + 4
>          ENDP
> AREA ||.constdata||, DATA, READONLY, ALIGN=1
> ||.constdata$1||
> startPos1
>          DCW      0x0001,0x0003
> startPos2
>          DCW      0x0000,0x0001
>          DCW      0x0002,0x0004
> AREA |area_number.1|, DATA, READONLY, ALIGN=0
> EXPORTAS |area_number.1|, ||.constdata||
> ||.constdata$6||
> ==========================================================================================================
> My query is
> 1) What the ||.constdata$1|| stands for?? Is it a label or a subsection
> inside the .data area or is it a indication to the linker to attach a
> specific (load) address to this symbol??
> 2) Why EXPORTAS is used to export the section named |area_number.1| as
> ||.constdata||??
> 3) How can I map this to gcc GAS assembler directives??
> Thanks in advance
> Regds
> Ketan
> "Destiny is not a matter of chance, it is a matter of choice; it is not a
> thing to be waited for, it is a thing to be achieved."
>                                                                                                  ----William
> Jennings Bryan
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