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bench1: Add benchmark for ppc_exec.

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joevt 2024-09-16 22:05:39 -07:00 committed by dingusdev
parent bc05593dd2
commit e14ede2510
3 changed files with 33 additions and 21 deletions
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8
CMakeLists.txt
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@ -180,9 +180,13 @@ if (DPPC_BUILD_PPC_TESTS)
endif()
if (DPPC_BUILD_BENCHMARKS)
file(GLOB BENCH_SOURCES "${PROJECT_SOURCE_DIR}/benchmark/*.cpp")
add_compile_options("-DPPC_BENCHMARKS")
file(GLOB BENCH_SOURCES "${PROJECT_SOURCE_DIR}/benchmark/*.cpp"
"${PROJECT_SOURCE_DIR}/cpu/ppc/*.cpp"
"${PROJECT_SOURCE_DIR}/cpu/ppc/*.h"
)
add_executable(bench1 ${BENCH_SOURCES} $<TARGET_OBJECTS:core>
$<TARGET_OBJECTS:cpu_ppc>
# $<TARGET_OBJECTS:cpu_ppc>
$<TARGET_OBJECTS:debugger>
$<TARGET_OBJECTS:devices>
$<TARGET_OBJECTS:machines>

45
benchmark/bench1.cpp
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@ -27,6 +27,10 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#include <thirdparty/loguru/loguru.hpp>
#include <debugger/debugger.h>
void ppc_exception_handler(Except_Type exception_type, uint32_t srr1_bits) {
power_on = false;
}
uint32_t cs_code[] = {
0x3863FFFC, 0x7C861671, 0x41820090, 0x70600002, 0x41E2001C, 0xA0030004,
0x3884FFFE, 0x38630002, 0x5486F0BF, 0x7CA50114, 0x41820070, 0x70C60003,
@ -36,7 +40,7 @@ uint32_t cs_code[] = {
0x80C30008, 0x7CA50114, 0x80E3000C, 0x7CA53114, 0x85030010, 0x7CA53914,
0x4200FFE0, 0x7CA54114, 0x70800002, 0x41E20010, 0xA0030004, 0x38630002,
0x7CA50114, 0x70800001, 0x41E20010, 0x88030004, 0x5400402E, 0x7CA50114,
0x7C650194, 0x4E800020
0x7C650194, /* 0x4E800020 */ 0x00005AF0
};
// 0x7FFFFFFC is the max
@ -123,26 +127,29 @@ int main(int argc, char** argv) {
}
LOG_F(INFO, "Overhead Time: %lld ns", overhead);
for (i = 0; i < test_iterations; i++) {
uint64_t best_sample = -1;
for (j = 0; j < test_samples; j++) {
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = test_size; // len
ppc_state.gpr[5] = 0; // sum
power_on = true;
for (int theproc = 0; theproc < 2; theproc++) {
LOG_F(INFO, "Doing %s", theproc ? "ppc_exec_until" : "ppc_exec");
for (i = 0; i < test_iterations; i++) {
uint64_t best_sample = -1;
for (j = 0; j < test_samples; j++) {
ppc_state.pc = 0;
ppc_state.gpr[3] = 0x1000; // buf
ppc_state.gpr[4] = test_size; // len
ppc_state.gpr[5] = 0; // sum
power_on = true;
auto start_time = std::chrono::steady_clock::now();
ppc_exec_until(0xC4);
auto end_time = std::chrono::steady_clock::now();
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
if (time_elapsed.count() < best_sample)
best_sample = time_elapsed.count();
auto start_time = std::chrono::steady_clock::now();
(theproc) ? ppc_exec_until(0xC4) : ppc_exec();
auto end_time = std::chrono::steady_clock::now();
auto time_elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end_time - start_time);
if (time_elapsed.count() < best_sample)
best_sample = time_elapsed.count();
}
if (ppc_state.gpr[3] != checksum)
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
best_sample -= overhead;
LOG_F(INFO, "(%d) %lld ns, %.4lf MiB/s", i+1, best_sample, 1E9 * test_size / (best_sample * 1024 * 1024));
}
if (ppc_state.gpr[3] != checksum)
LOG_F(INFO, "Checksum: 0x%08X", ppc_state.gpr[3]);
best_sample -= overhead;
LOG_F(INFO, "(run #%d) Time: %lld ns Performance: %.4lf MiB/s", i, best_sample, 1E9 * test_size / (best_sample * 1024 * 1024));
}
delete(grackle_obj);

1
cpu/ppc/ppcexceptions.cpp
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@ -31,6 +31,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
jmp_buf exc_env; /* Global exception environment. */
#if !defined(PPC_TESTS) && !defined(PPC_BENCHMARKS)
void ppc_exception_handler(Except_Type exception_type, uint32_t srr1_bits) {
#ifdef CPU_PROFILING
exceptions_processed++;