Forum: ARM programming with GCC/GNU tools Multiple Output Variables in asm code

Author: Nikshep Patil (nikshep)
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Please let me know how to specify multiple output variables in ARM asm
My problem is conversion of the following C code to ARM asm -

C Code -

t0 = abs(t0);
sc += (t0 > 0);

I want to convert this to assembly. The following is one of the possible
implementations. But this implementation doesnt allow to have both 't0'
and 'sc' as outputs -

   "CMP     %2, #0\n\t"
   "RSBLT   %1, %2, #0\n\t"
   "ADDNE   %0, %0, #1"
   : "=&r" (sc), "=r" (t0)
   : "r" (t0)

Can anyone suggest me a way to have both 'to' and 'sc' as output
variables without writing separate asm codes for the two steps...


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