diff options
Diffstat (limited to 'tests/generate_alu_tests.c')
| -rw-r--r-- | tests/generate_alu_tests.c | 180 |
1 files changed, 98 insertions, 82 deletions
diff --git a/tests/generate_alu_tests.c b/tests/generate_alu_tests.c index ebd2223..39de43e 100644 --- a/tests/generate_alu_tests.c +++ b/tests/generate_alu_tests.c @@ -1,96 +1,112 @@ +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <time.h> -#include <stdbool.h> typedef enum { - ADD = 0b0000, - SUB = 0b0001, - SLT = 0b0011, - - AND = 0b0100, - OR = 0b0101, - XOR = 0b0110, - - SLL = 0b1000, - SRL = 0b1001, - SRA = 0b1011, -} OP; + ADD = 0b0000, + SUB = 0b0001, + SLT = 0b0011, + AND = 0b0100, + OR = 0b0101, + XOR = 0b0110, + + SLL = 0b1000, + SRL = 0b1001, + SRA = 0b1011, +} OP; void test_op(OP op, uint32_t a, uint32_t b) { - uint32_t result; - bool overflow = false; - bool zero; - - switch (op) { - case ADD: result = a + b; overflow = result < b; break; - case SUB: result = a - b; overflow = a < b; break; - case SLT: result = a < b; break; - - case AND: result = a & b; break; - case OR: result = a | b; break; - case XOR: result = a ^ b; break; - - case SLL: result = a << b; break; - case SRL: result = a >> b; break; - case SRA: result = ((int32_t) a) >> b; break; - } - - zero = result == 0; - - printf("%01X__%08X_%08X__%08X_%01X\n", op & 0x0f, a, b, result, (overflow << 1) | zero); + uint32_t result; + bool zero; + + switch (op) { + case ADD: + result = a + b; + break; + case SUB: + result = a - b; + break; + case SLT: + result = (int32_t)a < (int32_t)b; + break; + + case AND: + result = a & b; + break; + case OR: + result = a | b; + break; + case XOR: + result = a ^ b; + break; + + case SLL: + result = a << b % 32; + break; + case SRL: + result = a >> b % 32; + break; + case SRA: + result = ((int32_t)a) >> b % 32; + break; + } + + zero = result == 0; + + printf("%01X__%08X_%08X__%08X_%01X\n", op & 0x0f, a, b, result, zero); } void test_op_random(OP op, int num) { - for (int i = 0; i < num; ++i) { - uint32_t a = (rand() << 16) | rand(); - uint32_t b = (rand() << 16) | rand(); - test_op(op, a, b); - } + for (int i = 0; i < num; ++i) { + uint32_t a = (rand() << 16) | rand(); + uint32_t b = (rand() << 16) | rand(); + test_op(op, a, b); + } } -int main(int argc, const char * argv[]) { - srand(time(NULL)); - - test_op_random(ADD, 1000); - test_op(ADD, 0x00000000, 0x00000000); - test_op(ADD, 0xffffffff, 0xffffffff); - test_op(ADD, 0xffffffff, 0x00000001); - test_op_random(SUB, 1000); - test_op(SUB, 0xffffffff, 0xffffffff); - test_op_random(SLT, 1000); - test_op(SLT, 0x8fffffff, 0xffffffff); - test_op(SLT, 0xffffffff, 0x00000001); - test_op(SLT, 0x00000001, 0xffffffff); - - test_op_random(OR, 1000); - test_op(OR, 0x00000000, 0x00000000); - test_op(OR, 0xffffffff, 0x00000000); - test_op(OR, 0x00000000, 0xffffffff); - test_op(OR, 0xffffffff, 0xffffffff); - test_op_random(AND, 1000); - test_op(AND, 0x00000000, 0x00000000); - test_op(AND, 0xffffffff, 0x00000000); - test_op(AND, 0x00000000, 0xffffffff); - test_op(AND, 0xffffffff, 0xffffffff); - test_op_random(XOR, 1000); - test_op(XOR, 0x00000000, 0x00000000); - test_op(XOR, 0xffffffff, 0x00000000); - test_op(XOR, 0x00000000, 0xffffffff); - test_op(XOR, 0xffffffff, 0xffffffff); - - test_op_random(SLL, 1000); - test_op(SLL, 0x0000000f, 0x00000004); - test_op(SLL, 0xffffffff, 0x0000001c); - test_op(SLL, 0xf0000000, 0x00000002); - test_op(SLL, 0x01234567, 0x00000001); - test_op_random(SRL, 1000); - test_op(SRL, 0xf0000000, 0x0000001c); - test_op(SRL, 0x0000000f, 0x0000004); - test_op_random(SRA, 1000); - test_op(SRA, 0xf0000000, 0x0000001c); - test_op(SRA, 0x0000000f, 0x0000004); - - return 0; +int main(int argc, const char *argv[]) { + srand(time(NULL)); + + test_op_random(ADD, 1000); + test_op(ADD, 0x00000000, 0x00000000); + test_op(ADD, 0xffffffff, 0xffffffff); + test_op(ADD, 0xffffffff, 0x00000001); + test_op_random(SUB, 1000); + test_op(SUB, 0xffffffff, 0xffffffff); + test_op_random(SLT, 1000); + test_op(SLT, 0x8fffffff, 0xffffffff); + test_op(SLT, 0xffffffff, 0x00000001); + test_op(SLT, 0x00000001, 0xffffffff); + + test_op_random(OR, 1000); + test_op(OR, 0x00000000, 0x00000000); + test_op(OR, 0xffffffff, 0x00000000); + test_op(OR, 0x00000000, 0xffffffff); + test_op(OR, 0xffffffff, 0xffffffff); + test_op_random(AND, 1000); + test_op(AND, 0x00000000, 0x00000000); + test_op(AND, 0xffffffff, 0x00000000); + test_op(AND, 0x00000000, 0xffffffff); + test_op(AND, 0xffffffff, 0xffffffff); + test_op_random(XOR, 1000); + test_op(XOR, 0x00000000, 0x00000000); + test_op(XOR, 0xffffffff, 0x00000000); + test_op(XOR, 0x00000000, 0xffffffff); + test_op(XOR, 0xffffffff, 0xffffffff); + + test_op_random(SLL, 1000); + test_op(SLL, 0x0000000f, 0x00000004); + test_op(SLL, 0xffffffff, 0x0000001c); + test_op(SLL, 0xf0000000, 0x00000002); + test_op(SLL, 0x01234567, 0x00000001); + test_op_random(SRL, 1000); + test_op(SRL, 0xf0000000, 0x0000001c); + test_op(SRL, 0x0000000f, 0x0000004); + test_op_random(SRA, 1000); + test_op(SRA, 0xf0000000, 0x0000001c); + test_op(SRA, 0x0000000f, 0x0000004); + + return 0; } |