mirror of https://github.com/st3fan/ewm.git
101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
// The MIT License (MIT)
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//
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// Copyright (c) 2015 Stefan Arentz - http://github.com/st3fan/ewm
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <time.h>
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#include "cpu.h"
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#include "ins.h"
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#include "mem.h"
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#include "utl.h"
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#define CPU_BENCH_ITERATIONS (10 * 1000 * 1000)
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void test(struct cpu_t *cpu, uint8_t opcode) {
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uint64_t runs[3];
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struct cpu_instruction_t *ins = &cpu->instructions[opcode];
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for (int run = 0; run < 3; run++) {
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struct timespec start;
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if (clock_gettime(CLOCK_REALTIME, &start) != 0) {
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perror("Cannot get time");
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exit(1);
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}
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switch (ins->bytes) {
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case 1:
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for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
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((cpu_instruction_handler_t) ins->handler)(cpu);
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}
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break;
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case 2:
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for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
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((cpu_instruction_handler_byte_t) ins->handler)(cpu, 0x12);
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}
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break;
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case 3:
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for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
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((cpu_instruction_handler_word_t) ins->handler)(cpu, 0x1234);
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}
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break;
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}
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struct timespec now;
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if (clock_gettime(CLOCK_REALTIME, &now) != 0) {
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perror("Cannot get time");
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exit(1);
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}
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uint64_t duration_ms = (now.tv_sec * 1000 + (now.tv_nsec / 1000000))
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- (start.tv_sec * 1000 + (start.tv_nsec / 1000000));
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runs[run] = duration_ms;
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}
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printf("$%.2X %s %8llu %8llu %8llu -> %8llu\n",
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opcode, ins->name, runs[0], runs[1], runs[2],
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(runs[0] + runs[1] + runs[2]) / 3);
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}
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int main(int argc, char **argv) {
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struct cpu_t *cpu = cpu_create(EWM_CPU_MODEL_65C02);
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cpu_add_ram_data(cpu, 0, 0xffff, malloc(0xffff));
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cpu_reset(cpu);
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if (argc > 1) {
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for (int i = 1; i < argc; i++) {
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for (int opcode = 0; opcode <= 255; opcode++) {
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if (strcmp(cpu->instructions[opcode].name, argv[i]) == 0) {
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test(cpu, opcode);
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}
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}
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}
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} else {
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for (int opcode = 0; opcode <= 255; opcode++) {
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test(cpu, opcode);
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}
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}
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}
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