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c4afd44ed7
Replaced all references to simulation with emulation Updated copyright year Updated .gitignore to reduce chances of random files being uploaded to the repo Added .gitattributes to normalize all text files, and to ignore binary files (which includes the logo and the NEC PDF)
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
//
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// vr4300/cpu.c: VR4300 processor container.
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//
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// CEN64: Cycle-Accurate Nintendo 64 Emulator.
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// Copyright (C) 2015, Tyler J. Stachecki.
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//
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// This file is subject to the terms and conditions defined in
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// 'LICENSE', which is part of this source code package.
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//
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#include "common.h"
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#include "vr4300/cp0.h"
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#include "vr4300/cp1.h"
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#include "vr4300/cpu.h"
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#include "vr4300/icache.h"
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#include "vr4300/pipeline.h"
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#ifdef DEBUG_MMIO_REGISTER_ACCESS
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const char *mi_register_mnemonics[NUM_MI_REGISTERS] = {
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#define X(reg) #reg,
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#include "vr4300/registers.md"
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#undef X
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};
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#endif
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// Sets the opaque pointer used for external accesses.
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static void vr4300_connect_bus(struct vr4300 *vr4300,
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struct bus_controller *bus) {
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vr4300->bus = bus;
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}
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// Initializes the VR4300 component.
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int vr4300_init(struct vr4300 *vr4300, struct bus_controller *bus) {
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vr4300_connect_bus(vr4300, bus);
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vr4300_cp0_init(vr4300);
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vr4300_cp1_init(vr4300);
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vr4300_dcache_init(&vr4300->dcache);
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vr4300_icache_init(&vr4300->icache);
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vr4300_pipeline_init(&vr4300->pipeline);
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vr4300->signals = VR4300_SIGNAL_COLDRESET;
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// MESS uses this version, so we will too?
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vr4300->mi_regs[MI_VERSION_REG] = 0x01010101;
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vr4300->mi_regs[MI_INIT_MODE_REG] = 0x80;
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return 0;
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}
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// Prints out simulation information to stdout.
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void vr4300_print_summary(struct vr4300_stats *stats) {
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unsigned i, j;
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float secs;
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float cpi;
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// Print banner.
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printf("###############################\n"
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" NEC VR4300 Simulation Summary\n"
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"###############################\n"
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"\n"
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);
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// Print configuration, summary, whatever.
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secs = stats->total_cycles / 93750000.0f;
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printf(" %16s: %.1f sec.\n"
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"\n\n",
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"Actual runtime", secs
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);
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// Print performance statistics.
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cpi = (float) stats->executed_instructions / stats->total_cycles;
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printf(" * Performance statistics:\n\n"
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" %16s: %lu\n"
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" %16s: %lu\n"
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" %16s: %1.2f\n"
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"\n\n",
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"Elapsed pcycles", stats->total_cycles,
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"Insns executed", stats->executed_instructions,
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"Average CPI", cpi
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);
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// Print executed opcode counts.
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printf(" * Executed instruction counts:\n\n");
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for (i = 1; i < NUM_VR4300_OPCODES; i += 2) {
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for (j = 0; i + j < NUM_VR4300_OPCODES && j < 2; j++) {
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printf(" %16s: %16lu", vr4300_opcode_mnemonics[i + j],
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stats->opcode_counts[i + j]);
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if (j == 0)
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printf("\t");
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}
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printf("\n");
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}
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}
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