1 #include <stdio.h> 2 3 #define branch(mask,_v1,_v2) \ 4 ({ \ 5 unsigned char taken; \ 6 unsigned b1 = _v1, b2 = _v2; \ 7 asm volatile(" or %[b1],%[b2]\n\t" \ 8 " brc " #mask " ,1f\n\t" \ 9 " mvi %[taken],0\n\t" \ 10 " j 0f\n\t" \ 11 "1: mvi %[taken],1\n\t" \ 12 "0: bcr 0,0 /* nop */\n\t" \ 13 : [taken] "=Q" (taken), [b1] "+d"(b1) \ 14 : [b2] "d"(b2) \ 15 : "cc"); \ 16 taken; \ 17 }) 18 19 void 20 or_1(void) 21 { 22 int wrong, ok, v1, v2; 23 24 printf("Test #1 result = 0\n"); 25 26 v1 = v2 = 0; 27 wrong = ok = 0; 28 if (branch(0, v1, v2)) ++wrong; else ++ok; 29 if (branch(1, v1, v2)) ++wrong; else ++ok; 30 if (branch(2, v1, v2)) ++wrong; else ++ok; 31 if (branch(3, v1, v2)) ++wrong; else ++ok; 32 if (branch(4, v1, v2)) ++wrong; else ++ok; 33 if (branch(5, v1, v2)) ++wrong; else ++ok; 34 if (branch(6, v1, v2)) ++wrong; else ++ok; 35 if (branch(7, v1, v2)) ++wrong; else ++ok; 36 if (branch(8, v1, v2)) ++ok; else ++wrong; 37 if (branch(9, v1, v2)) ++ok; else ++wrong; 38 if (branch(10, v1, v2)) ++ok; else ++wrong; 39 if (branch(11, v1, v2)) ++ok; else ++wrong; 40 if (branch(12, v1, v2)) ++ok; else ++wrong; 41 if (branch(13, v1, v2)) ++ok; else ++wrong; 42 if (branch(14, v1, v2)) ++ok; else ++wrong; 43 if (branch(15, v1, v2)) ++ok; else ++wrong; 44 45 if (wrong != 0 || ok != 16) 46 printf("FAILED\n"); 47 else 48 printf("OK\n"); 49 } 50 51 void 52 or_2(void) 53 { 54 int wrong, ok, v1, v2; 55 56 printf("Test #2 result = 0xffffffff\n"); 57 v1 = 0; 58 v2 = ~0; 59 wrong = ok = 0; 60 if (branch(0, v1, v2)) ++wrong; else ++ok; 61 if (branch(1, v1, v2)) ++wrong; else ++ok; 62 if (branch(2, v1, v2)) ++wrong; else ++ok; 63 if (branch(3, v1, v2)) ++wrong; else ++ok; 64 if (branch(4, v1, v2)) ++ok; else ++wrong; 65 if (branch(5, v1, v2)) ++ok; else ++wrong; 66 if (branch(6, v1, v2)) ++ok; else ++wrong; 67 if (branch(7, v1, v2)) ++ok; else ++wrong; 68 if (branch(8, v1, v2)) ++wrong; else ++ok; 69 if (branch(9, v1, v2)) ++wrong; else ++ok; 70 if (branch(10, v1, v2)) ++wrong; else ++ok; 71 if (branch(11, v1, v2)) ++wrong; else ++ok; 72 if (branch(12, v1, v2)) ++ok; else ++wrong; 73 if (branch(13, v1, v2)) ++ok; else ++wrong; 74 if (branch(14, v1, v2)) ++ok; else ++wrong; 75 if (branch(15, v1, v2)) ++ok; else ++wrong; 76 77 if (wrong != 0 || ok != 16) 78 printf("FAILED\n"); 79 else 80 printf("OK\n"); 81 } 82 83 int main() 84 { 85 or_1(); 86 or_2(); 87 return 0; 88 } 89
