Fixes #137 Benchmark CPU Module

This commit is contained in:
Stefan Arentz 2017-01-14 20:22:29 -05:00
parent af139f2e2c
commit 4db40be24e
4 changed files with 102 additions and 8 deletions

View File

@ -39,10 +39,15 @@ SCR_TEST_SOURCES=cpu.c ins.c mem.c fmt.c two.c scr.c dsk.c chr.c alc.c utl.c scr
SCR_TEST_OBJECTS=$(SCR_TEST_SOURCES:.c=.o) SCR_TEST_OBJECTS=$(SCR_TEST_SOURCES:.c=.o)
SCR_TEST_LIBS=-lSDL2 SCR_TEST_LIBS=-lSDL2
all: $(EWM_SOURCES) $(EWM_EXECUTABLE) $(CPU_TEST_SOURCES) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_EXECUTABLE) CPU_BENCH=cpu_bench
CPU_BENCH_SOURCES=cpu.c ins.c mem.c fmt.c cpu_bench.c
CPU_BENCH_OBJECTS=$(CPU_BENCH_SOURCES:.c=.o)
CPU_BENCH_LIBS=
all: $(EWM_SOURCES) $(EWM_EXECUTABLE) $(CPU_TEST_SOURCES) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_EXECUTABLE) $(CPU_BENCH)
clean: clean:
rm -f $(EWM_OBJECTS) $(EWM_EXECUTABLE) $(CPU_TEST_OBJECTS) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_OBJECTS) $(SCR_TEST_EXECUTABLE) rm -f $(EWM_OBJECTS) $(EWM_EXECUTABLE) $(CPU_TEST_OBJECTS) $(CPU_TEST_EXECUTABLE) $(SCR_TEST_OBJECTS) $(SCR_TEST_EXECUTABLE) $(CPU_BENCH)
$(EWM_EXECUTABLE): $(EWM_OBJECTS) $(EWM_EXECUTABLE): $(EWM_OBJECTS)
$(CC) $(LDFLAGS) $(EWM_OBJECTS) $(EWM_LIBS) -o $@ $(CC) $(LDFLAGS) $(EWM_OBJECTS) $(EWM_LIBS) -o $@
@ -53,5 +58,8 @@ $(CPU_TEST_EXECUTABLE): $(CPU_TEST_OBJECTS)
$(SCR_TEST_EXECUTABLE): $(SCR_TEST_OBJECTS) $(SCR_TEST_EXECUTABLE): $(SCR_TEST_OBJECTS)
$(CC) $(LDFLAGS) $(SCR_TEST_OBJECTS) $(SCR_TEST_LIBS) -o $@ $(CC) $(LDFLAGS) $(SCR_TEST_OBJECTS) $(SCR_TEST_LIBS) -o $@
$(CPU_BENCH): $(CPU_BENCH_OBJECTS)
$(CC) $(LDFLAGS) $(CPU_BENCH_OBJECTS) $(CPU_BENCH_LIBS) -o $@
.c.o: .c.o:
$(CC) $(CFLAGS) $< -c -o $@ $(CC) $(CFLAGS) $< -c -o $@

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@ -37,12 +37,6 @@
#include "mem.h" #include "mem.h"
#include "fmt.h" #include "fmt.h"
/* Private API */
typedef void (*cpu_instruction_handler_t)(struct cpu_t *cpu);
typedef void (*cpu_instruction_handler_byte_t)(struct cpu_t *cpu, uint8_t oper);
typedef void (*cpu_instruction_handler_word_t)(struct cpu_t *cpu, uint16_t oper);
// Stack management. // Stack management.
void _cpu_push_byte(struct cpu_t *cpu, uint8_t b) { void _cpu_push_byte(struct cpu_t *cpu, uint8_t b) {

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@ -56,6 +56,10 @@ struct cpu_t {
uint64_t counter; uint64_t counter;
}; };
typedef void (*cpu_instruction_handler_t)(struct cpu_t *cpu);
typedef void (*cpu_instruction_handler_byte_t)(struct cpu_t *cpu, uint8_t oper);
typedef void (*cpu_instruction_handler_word_t)(struct cpu_t *cpu, uint16_t oper);
#define MEM_FLAGS_READ 0x01 #define MEM_FLAGS_READ 0x01
#define MEM_FLAGS_WRITE 0x02 #define MEM_FLAGS_WRITE 0x02

88
src/cpu_bench.c Normal file
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@ -0,0 +1,88 @@
// The MIT License (MIT)
//
// Copyright (c) 2015 Stefan Arentz - http://github.com/st3fan/ewm
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#include <stdlib.h>
#include <stdint.h>
#include <time.h>
#include "cpu.h"
#include "ins.h"
#include "mem.h"
#define CPU_BENCH_ITERATIONS (100 * 1000 * 1000)
void test(struct cpu_t *cpu, uint8_t opcode) {
uint64_t runs[3];
struct cpu_instruction_t *ins = &cpu->instructions[opcode];
for (int run = 0; run < 3; run++) {
struct timespec start;
if (clock_gettime(CLOCK_REALTIME, &start) != 0) {
perror("Cannot get time");
exit(1);
}
switch (ins->bytes) {
case 1:
for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
((cpu_instruction_handler_t) ins->handler)(cpu);
}
break;
case 2:
for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
((cpu_instruction_handler_byte_t) ins->handler)(cpu, 0x12);
}
break;
case 3:
for (uint64_t i = 0; i < CPU_BENCH_ITERATIONS; i++) {
((cpu_instruction_handler_word_t) ins->handler)(cpu, 0x1234);
}
break;
}
struct timespec now;
if (clock_gettime(CLOCK_REALTIME, &now) != 0) {
perror("Cannot get time");
exit(1);
}
uint64_t duration_ms = (now.tv_sec * 1000 + (now.tv_nsec / 1000000))
- (start.tv_sec * 1000 + (start.tv_nsec / 1000000));
runs[run] = duration_ms;
}
printf("$%.2X %s %8llu %8llu %8llu -> %8llu\n",
opcode, ins->name, runs[0], runs[1], runs[2],
(runs[0] + runs[1] + runs[2]) / 3);
}
int main(int argc, char **argv) {
struct cpu_t *cpu = cpu_create(EWM_CPU_MODEL_65C02);
cpu_add_ram_data(cpu, 0, 0xffff, malloc(0xffff));
cpu_reset(cpu);
for (int opcode = 0; opcode <= 255; opcode++) {
test(cpu, opcode);
}
}