Macintosh-Tools/dingusppc
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Add virtual CPU benchmarking code.

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This commit is contained in:
Maxim Poliakovski 2020-11-14 03:05:06 +01:00
parent b81de4af48
commit 6124dfd897
2 changed files with 101 additions and 0 deletions
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10
CMakeLists.txt
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@ -89,6 +89,16 @@ else()
target_link_libraries(testppc cubeb ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
endif()
file(GLOB BENCH_SOURCES "${PROJECT_SOURCE_DIR}/benchmark/*.cpp")
add_executable(bench1 ${BENCH_SOURCES} $<TARGET_OBJECTS:debugger>
$<TARGET_OBJECTS:cpu_ppc>
$<TARGET_OBJECTS:devices>
$<TARGET_OBJECTS:execution>
$<TARGET_OBJECTS:machines>
$<TARGET_OBJECTS:loguru>)
target_link_libraries(bench1 cubeb ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
add_custom_command(
TARGET testppc POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy

91
benchmark/bench1.cpp Normal file
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@ -0,0 +1,91 @@
#include <stdlib.h>
#include <chrono>
#include "cpu/ppc/ppcemu.h"
#include "cpu/ppc/ppcmmu.h"
#include "devices/mpc106.h"
#include <thirdparty/loguru/loguru.hpp>
uint32_t cs_code[] = {
0x3863FFFC, 0x7C861671, 0x41820090, 0x70600002, 0x41E2001C, 0xA0030004,
0x3884FFFE, 0x38630002, 0x5486F0BF, 0x7CA50114, 0x41820070, 0x70C60003,
0x41820014, 0x7CC903A6, 0x84030004, 0x7CA50114, 0x4200FFF8, 0x5486E13F,
0x41820050, 0x80030004, 0x7CC903A6, 0x80C30008, 0x7CA50114, 0x80E3000C,
0x7CA53114, 0x85030010, 0x7CA53914, 0x42400028, 0x80030004, 0x7CA54114,
0x80C30008, 0x7CA50114, 0x80E3000C, 0x7CA53114, 0x85030010, 0x7CA53914,
0x4200FFE0, 0x7CA54114, 0x70800002, 0x41E20010, 0xA0030004, 0x38630002,
0x7CA50114, 0x70800001, 0x41E20010, 0x88030004, 0x5400402E, 0x7CA50114,
0x7C650194, 0x4E800020
};
int main(int argc, char** argv) {
int i;
/* initialize logging */
loguru::g_preamble_date = false;
loguru::g_preamble_time = false;
loguru::g_preamble_thread = false;
loguru::g_stderr_verbosity = 0;
loguru::init(argc, argv);
MPC106* grackle_obj = new MPC106;
/* we need some RAM */
if (!grackle_obj->add_ram_region(0, 0x9000)) {
LOG_F(ERROR, "Could not create RAM region");
delete(grackle_obj);
return -1;
}
ppc_cpu_init(grackle_obj, PPC_VER::MPC750);
/* load executable code into RAM at address 0 */
for (i = 0; i < sizeof(cs_code); i++) {
mem_write_dword(i*4, cs_code[i]);
}
srand(0xCAFEBABE);
for (i = 0; i < 32768; i++) {
mem_write_byte(0x1000+i, rand() % 256);
}
/* prepare benchmark code execution */
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = 0x8000; // len
ppc_state.gpr[5] = 0; // sum
ppc_exec_until(0xC4);
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
// run the clock once for cache fill etc.
auto start_time = std::chrono::steady_clock::now();
auto end_time = std::chrono::steady_clock::now();
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
LOG_F(INFO, "Time elapsed (dry run): %lld ns", time_elapsed.count());
for (i = 0; i < 5; i++) {
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = 0x8000; // len
ppc_state.gpr[5] = 0; // sum
auto start_time = std::chrono::steady_clock::now();
ppc_exec_until(0xC4);
auto end_time = std::chrono::steady_clock::now();
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
LOG_F(INFO, "Time elapsed (run #%d): %lld ns", i, time_elapsed.count());
}
delete(grackle_obj);
return 0;
}