thejayman77
ec82764bef
RTL (GS rasterizer, EE core stub, platform bridge, LPDDR4B path), sim regression (272 TBs), docs, and tooling. Copyrighted PS2 content (BIOS, game code, GS dumps, and all dump-derived textures/traces) is excluded via .gitignore and stays local. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
// retroDE_ps2 — DobieStation headless trace runner
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//
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// Minimal harness for the golden-reference harness. Loads a BIOS image,
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// boots the EE in interpreter mode, runs a bounded number of frames, and
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// exits. The EE instruction-fetch trace is emitted by the tap added in
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// third_party/DobieStation/src/core/ee/emotion.cpp when the environment
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// variable RETRODE_PS2_EE_TRACE is set to a file path.
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//
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// Intended for Wave 1 / Checkpoint 2 of the harness: NOP-sled BIOS,
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// short run, compare first-N fetches against the RTL stub trace.
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//
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// Usage:
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// RETRODE_PS2_EE_TRACE=/path/to/dobie_ee.trace ./trace_runner <bios.bin> [frames]
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//
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// Notes:
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// - BIOS image must be exactly 4 MiB. Anything shorter is zero-padded;
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// anything longer is truncated.
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// - `frames` defaults to 1. One frame is ~4.9M EE cycles, which is far
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// more than Checkpoint 2 needs; keep it small.
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <fstream>
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#include <vector>
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#include "emulator.hpp"
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int main(int argc, char** argv)
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{
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if (argc < 2)
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{
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std::fprintf(stderr,
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"usage: %s <bios.bin> [frames]\n"
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"env: RETRODE_PS2_EE_TRACE=<path> enable EE fetch trace\n",
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argv[0]);
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return 2;
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}
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const char* bios_path = argv[1];
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int max_frames = (argc >= 3) ? std::atoi(argv[2]) : 1;
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if (max_frames <= 0) max_frames = 1;
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constexpr size_t BIOS_SIZE = 4 * 1024 * 1024;
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std::vector<uint8_t> bios(BIOS_SIZE, 0);
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std::ifstream f(bios_path, std::ios::binary);
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if (!f)
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{
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std::fprintf(stderr, "[trace_runner] cannot open %s\n", bios_path);
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return 2;
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}
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f.read(reinterpret_cast<char*>(bios.data()), BIOS_SIZE);
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std::fprintf(stderr, "[trace_runner] loaded %zd bytes from %s\n",
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f.gcount(), bios_path);
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Emulator emu;
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emu.reset();
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emu.load_BIOS(bios.data());
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emu.set_ee_mode(CPU_MODE::INTERPRETER);
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emu.set_vu0_mode(CPU_MODE::INTERPRETER);
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emu.set_vu1_mode(CPU_MODE::INTERPRETER);
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for (int i = 0; i < max_frames; i++)
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{
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std::fprintf(stderr, "[trace_runner] running frame %d/%d\n",
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i + 1, max_frames);
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emu.run();
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}
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std::fprintf(stderr, "[trace_runner] done\n");
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return 0;
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}
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