Need documentation [Fwd: gnu tools]

[fred anger]

Hi.  I'm forwarding the following message to the list for a collegue who
needs some documentation on some low-level crossgcc issues.  He's
currently using an m68k MRI cross-compiler on a sparc, but I recently
built him an m68k-coff crossgcc toolset under cygwin on NT.  He likes
it, but he has some issues that need resolving before we can put it to
use.  Any pointers to docs would be greatly appreciated.  TIA.

> I'm having difficulty finding documentation on the following:
> 
>    The C calling conventions (i.e., exactly how parameters are pushed onto the
>    stack so we can call C subroutines from assembly language, and vice versa).
>    How a C subroutine returns a value to the assembly routine that called it
>    (e.g., MRI returns values from C subroutines in register D0).
>    What registers, if any, a C subroutine will preserve and destroy (our legacy
>    code makes major assumptions based on registers that MRI preserves for the
>    assembly code).
> 
> If you'd like to see the type of information that MRI provides, see chapter 6 of
> the MRI C Compiler Reference Manual.


--
   fred anger - anger@triib.com 
                http://www.triib.com/anger/

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