Incompatability from OS3 to OS4 ??

[Paul Sanders]

Does anybody know whether there is a difference in the way C programs
interface with assembly code from SUNOS3 and SUNOS4 ??

As part of a program I'm trying to install under SUN OS4 there is the
following assembly code in one of the C files. I don't know anything about
assembly language programming on the SUN but the code looks fairly
reasonable.

The program works under OS3 so I assume something must have changed/been
fixed in the upgrade.

Could anyone tell me whether things have changed and, even better, a fix
for the fragment ??

nat
add(r0, r1)
nat	r0, r1;
{

	asm ("movl	a6@(0x8), d0");
	asm ("addl	a6@(0xc), d0");
	asm ("bvc	LADD");
	asm ("movel	#~0, d0");
	asm ("LADD:");
}

nat
mul(r0, r1)
nat	r0, r1;
{

	asm ("movl	a6@(0x8), d0");
	asm ("mulul	a6@(0xc), d0");
	asm ("bvc	LMUL");
	asm ("movel	#~0, d0");
	asm ("LMUL:");
}

Thanks

Paul Sanders
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