Some issues to resolve with XFree 4.0 yet

[Ani Joshi]

Can anybody explain how method a) is different/better then method b) ?
I *lot* of drivers are using method b) so is that to say all the
developers who are using it are wrong and should change?


a) asm volatile ("stwbrx %1,%2,%3; eieio"
          : "=m" (*(volatile unsigned *)(base_addr+regindex))
          : "r" (regdata), "b" (regindex), "r" (base_addr));


b) asm volatile ("stwbrx %0,%1,%2; eieio" : : "r"(regdata), "b"
		 (regindex), "r"(base_addr) : "memory");



a) asm volatile ("lwbrx %0,%1,%2; eieio"
           : "=r"(val)
           : "b"(regindex), "r"(base_addr),
             "m" (*(volatile unsigned *)(base_addr+regindex)));

b) asm volatile ("lwbrx %0,%1,%2; eieio" : "=r"(val) : "b"(regindex),
		  "r"(base_addr));


ani


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