115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-21 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <chrono>
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#include "cpu/ppc/ppcemu.h"
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#include "cpu/ppc/ppcmmu.h"
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#include "devices/memctrl/mpc106.h"
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#include <thirdparty/loguru/loguru.hpp>
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uint32_t cs_code[] = {
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0x3863FFFC, 0x7C861671, 0x41820090, 0x70600002, 0x41E2001C, 0xA0030004,
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0x3884FFFE, 0x38630002, 0x5486F0BF, 0x7CA50114, 0x41820070, 0x70C60003,
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0x41820014, 0x7CC903A6, 0x84030004, 0x7CA50114, 0x4200FFF8, 0x5486E13F,
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0x41820050, 0x80030004, 0x7CC903A6, 0x80C30008, 0x7CA50114, 0x80E3000C,
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0x7CA53114, 0x85030010, 0x7CA53914, 0x42400028, 0x80030004, 0x7CA54114,
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0x80C30008, 0x7CA50114, 0x80E3000C, 0x7CA53114, 0x85030010, 0x7CA53914,
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0x4200FFE0, 0x7CA54114, 0x70800002, 0x41E20010, 0xA0030004, 0x38630002,
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0x7CA50114, 0x70800001, 0x41E20010, 0x88030004, 0x5400402E, 0x7CA50114,
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0x7C650194, 0x4E800020
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};
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int main(int argc, char** argv) {
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int i;
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/* initialize logging */
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loguru::g_preamble_date = false;
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loguru::g_preamble_time = false;
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loguru::g_preamble_thread = false;
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loguru::g_stderr_verbosity = 0;
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loguru::init(argc, argv);
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MPC106* grackle_obj = new MPC106;
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/* we need some RAM */
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if (!grackle_obj->add_ram_region(0, 0x9000)) {
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LOG_F(ERROR, "Could not create RAM region");
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delete(grackle_obj);
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return -1;
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}
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constexpr uint64_t tbr_freq = 16705000;
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ppc_cpu_init(grackle_obj, PPC_VER::MPC750, tbr_freq);
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/* load executable code into RAM at address 0 */
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for (i = 0; i < sizeof(cs_code); i++) {
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mmu_write_vmem<uint32_t>(i*4, cs_code[i]);
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}
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srand(0xCAFEBABE);
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for (i = 0; i < 32768; i++) {
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mmu_write_vmem<uint8_t>(0x1000+i, rand() % 256);
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}
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/* prepare benchmark code execution */
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ppc_state.pc = 0;
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ppc_state.gpr[3] = 0x1000; // buf
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ppc_state.gpr[4] = 0x8000; // len
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ppc_state.gpr[5] = 0; // sum
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ppc_exec_until(0xC4);
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LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
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// run the clock once for cache fill etc.
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auto start_time = std::chrono::steady_clock::now();
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auto end_time = std::chrono::steady_clock::now();
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auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
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LOG_F(INFO, "Time elapsed (dry run): %lld ns", time_elapsed.count());
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for (i = 0; i < 5; i++) {
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ppc_state.pc = 0;
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ppc_state.gpr[3] = 0x1000; // buf
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ppc_state.gpr[4] = 0x8000; // len
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ppc_state.gpr[5] = 0; // sum
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auto start_time = std::chrono::steady_clock::now();
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ppc_exec_until(0xC4);
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auto end_time = std::chrono::steady_clock::now();
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LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
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auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
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LOG_F(INFO, "Time elapsed (run #%d): %lld ns", i, time_elapsed.count());
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}
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delete(grackle_obj);
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return 0;
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}
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