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Re: Mac OS X asm syntax vs Linux asm syntax

On Tuesday, Jun 24, 2003, at 07:26 US/Eastern, Michael Dales wrote:

Andrew Pinski <email@hidden> writes:

On Monday, Jun 23, 2003, at 11:18 US/Eastern, Pierre d'Herbemont wrote:

Hi,

I would like to know why is there differences between Mac OS X and
Linux PowerPC assembler syntax. For example this is not working fine
on Mac OS X:
lis 9,imports+32@ha
you will have to change this to:
lis r9, ha16(imports+32)
Are there some settings you can change to enable Linux syntax on Mac
OS X.

No because Linux and Darwin uses two different file formats and ABI's
for executables.
You should use two different files for Darwin and Linux.

I know that the asm files shouldn't be used directly for each
platform, but I do with there was a consistant asm format in gcc. It's
a pain to have to remember all the different styles.


But I think the main reason why they are different is because PIC code generation is different.
GCC has nothing to do with the difference in asm format any way, it is the assembler which causes
this difference. The different styles are caused by mach-o being different than elf.
In fact on AIX there is even another style but it is like the sysv style.
You can use the c preprocessor for the differences if you like.

Thanks,
Andrew Pinski
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