GCC PowerPC register conventions ?

GCC PowerPC register conventions ?

[Bijendra Singh]

I am looking for information on stack contents
in a C/C++ procedure call to/from PowerPC(eg. 603e )
assembly code.
(1) How to organize data in registers when calling
a C/C++ procedure from PowerPC assembly ?
(2) Which register holds return value on return from
a procedure in C/C++ when a C/C++ proc is called
from ppc assembly.
(3) Any references/URLs/docs for programming details.

Thanks
-Bijendra

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Re: GCC PowerPC register conventions ?

[Kevin Buettner]

On Feb 24,  4:50pm, Bijendra Singh wrote:

> I am looking for information on stack contents
> in a C/C++ procedure call to/from PowerPC(eg. 603e )
> assembly code.
> (1) How to organize data in registers when calling
> a C/C++ procedure from PowerPC assembly ?
> (2) Which register holds return value on return from
> a procedure in C/C++ when a C/C++ proc is called
> from ppc assembly.
> (3) Any references/URLs/docs for programming details.

The following documents will answer your questions:

    http://www.mot.com/SPS/ADC/pps/download/8XX/SVR4abippc.pdf
    http://www.mot.com/SPS/ADC/pps/download/8XX/ppceabi.pdf
    http://www.chips.ibm.com/techlib/products/powerpc/manuals/compiler/cover.html

Kevin

--
Kevin Buettner
kev@primenet.com, kevinb@redhat.com

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Re: GCC PowerPC register conventions ?

[W4OQM]

For the terminally curious PPC assembly language programmer, I recommend the
following:

The PowerPC Compiler Writer's Guide
Edited by Steve Hoxey, et.al.
International Business Machines Corporation 1996.

An online version is available at:

http://www.chips.ibm.com/techlib/products/powerpc/manuals/compiler/cover.html


Charlie

Charles A. Wells
c.wells@ieee.org

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