Author: Filip Tvrzsky
Date: 10:18:50 03/29/03
Go up one level in this thread
On March 29, 2003 at 12:02:45, Sune Fischer wrote:
>On March 29, 2003 at 11:48:25, Filip Tvrzsky wrote:
>>>>The assembly code used to be in x86.s in Crafty.
>>>
>>>thanks.
>>>I get a lot of errors when compiling it:
>>>
>>>$ gcc *.s
>>>X86.s: Assembler messages:
>>>X86.s:4: Error: bad or irreducible absolute expression
>>>X86.s:30: Error: bad or irreducible absolute expression
>>>X86.s:45: Error: bad or irreducible absolute expression
>>>X86.s:63: Error: bad or irreducible absolute expression
>>>X86.s:122: Error: bad or irreducible absolute expression
>>>X86.s:154: Error: bad or irreducible absolute expression
>>>X86.s:182: Error: bad or irreducible absolute expression
>>>X86.s:234: Error: bad or irreducible absolute expression
>>>X86.s:266: Error: bad or irreducible absolute expression
>>>X86.s:301: Error: bad or irreducible absolute expression
>>>X86.s:347: Error: bad or irreducible absolute expression
>>>X86.s:384: Error: bad or irreducible absolute expression
>>>X86.s:456: Error: bad or irreducible absolute expression
>>>X86.s:492: Error: bad or irreducible absolute expression
>>>X86.s:516: Error: bad or irreducible absolute expression
>>>
>>>No clue what's wrong.
>>
>>Hi,
>>I am neither programming nor Crafty expert though:
>>I think that X86.s is not C code but assembler, so you have to compile with as,
>>not gcc.
>>And those error messages above are there IMO
>>because on the first line of X86.s file you can see such definiton of the
>>alignement constant: alignement = ALIGN. The word ALIGN is normally replaced
>>during the make process (see MAKEFILE file). If you want compile only X86.s
>>file, you have to substitute ALIGN on your own. I don't know which is the
>>appropriate value, maybe 4 or 16?
>>Filip
>
>Hmmm, are you saying GCC can't compile assembler?
>That sounds very strange to me, a compiler that can't compile?
>
From the GCC manual:
"Several versions of the compiler (C, C++, Objective-C, Ada, Fortran, and Java)
are integrated; this is why we use the name "GNU Compiler Collection". GCC can
compile programs written in any of these languages. The Ada, Fortran, and Java
compilers are described in separate manuals.
"GCC" is a common shorthand term for the GNU Compiler Collection. This is both
the most general name for the compiler, and the name used when the emphasis is
on compiling C programs (as the abbreviation formerly stood for "GNU C
Compiler")."
There is nothing about assembler ...
Of course, you can compile assembler with gcc as well but only if it is embedded
in the asm statement like this:
asm(" movl %eax, %ecx ");
>Well, in any case I don't know how to write a makefile, so if that's what it
>takes then I'm lost.
>
No, you don't need to write a makefile, neither I can do it. Simply substitue
the word "ALIGN" in the first line of the X86.s file with some number, I suppose
you 4 or 16, and try to compile it. "Error: bad or irreducible absolute
expression" messages should disappear. But if you compile with gcc instead of as
you become another error messages. If you will believe me and type: as X86.s ,
then you should became your requested object file a.out ... :-)
(at least it works so by me ...).
Filip
>But thanks for the info, I'll stick to C++ then :)
>
>-S.
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