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/*
regtrack.c - testing register tracking
*/
#include <testfwk.h>
#include <string.h>
volatile unsigned char __xdata t;
__pdata unsigned char ta[] = {0x00,0x01,0x01,0x02,0x01,0xfe,0x7f,0xfe,0xef};
__code const unsigned char tb[] = {0x00,0x01,0x01,0x02,0x01,0xfe,0x7f,0xfe,0xef};
static void
foo (unsigned char which)
{
unsigned char i, k; // should be allocated to registers
volatile unsigned char m = 1;
k = 2;
do
{
t = 0xab;
i = 2;
do
{
switch( which )
{
case 1:
k = 1;
t = 1; // mov
break;
case 2:
t = 0x01;
t = 0x02; // inc
break;
case 3:
t = 0x05;
t = 0x04;
t = 0x03; // dec
break;
case 4:
t = ~0x04;
t = 0x04; // cpl
break;
case 5:
t = 0x05 << 1;
t = 0x05; // rr
break;
case 6:
t = 0x06 >> 1;
t = 0x06; // rl
break;
case 7:
t = 0x70;
t = 0x07; // swap
break;
case 0x08:
t = 0x0a;
k = 0x02;
t = 0x08; // xrl
break;
case 0x09:
t = 0x0f;
k = 0xf9;
t = 0x09; // anl
break;
case 0x0a:
t = 0x08;
k = 0x02;
t = 0x0a; // orl
break;
case 0x0b:
t = 0x0b * 7;
k = 7;
t = t/7; // div
break;
case 0x0c:
t = 4;
k = 3;
t = t * 3; // mul
break;
}
}
while (--i);
if (!i)
k = m; // prepare to exit outer loop
}
while (--k);
}
void
testRegTrack (void)
{
ASSERT (0 == (char)memcmp (ta, tb, sizeof tb));
foo (1); ASSERT (t == 1);
foo (2); ASSERT (t == 2);
foo (3); ASSERT (t == 3);
foo (4); ASSERT (t == 4);
#if 1
/* various checks for equality */
foo (5); ASSERT (!(t ^ 5));
foo (6); ASSERT (0 == (t ^ 6));
foo (7); ASSERT (!(t - 7));
foo (8); ASSERT (0 == (t - 8));
foo (9); ASSERT (0 == ((unsigned char)(t + (0x100 - 9))));
foo (10); ASSERT (!((unsigned char)(t + (0x100 - 10))));
foo (11); ASSERT (t >= 11 && t <= 11);
foo (12); ASSERT (t > 11 && t < 13);
#else
foo (5); ASSERT (t == 5);
foo (6); ASSERT (t == 6);
foo (7); ASSERT (t == 7);
foo (8); ASSERT (t == 8);
foo (9); ASSERT (t == 9);
foo (10); ASSERT (t == 10);
foo (11); ASSERT (t == 11);
foo (12); ASSERT (t == 12);
#endif
}
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