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/** Test the 8-bit bitwise operators under register pressure
Meant to trigger use of 16-bit bitwise instructions for 8-bit operations.
*/
#include <testfwk.h>
unsigned char c0, c1, c2, c3;
unsigned char and8(void)
{
unsigned char t0, t1, t2, t3, t4, t5;
t0 = c0 + 1;
t1 = c1 + 1;
t2 = c2 + 1;
t3 = c3 + 1;
t4 = t0 & t1;
t5 = t2 & t3;
return(t4 + t5);
}
unsigned char or8(void)
{
unsigned char t0, t1, t2, t3, t4, t5;
t0 = c0 + 1;
t1 = c1 + 1;
t2 = c2 + 1;
t3 = c3 + 1;
t4 = t0 | t1;
t5 = t2 | t3;
return(t4 + t5);
}
void
test8(void)
{
c0 = 2;
c1 = 2;
c2 = 4;
c3 = 4;
ASSERT(and8() == 8);
ASSERT(or8() == 8);
}
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