git.seregonwar.com

ps4MEL/runtime.cpp

1	/*
2	* ╔═══════════════════════════════════════════════════════════════════════════╗
3	* ║ PS4 MOCK RUNTIME LAYER ║
4	* ╠═══════════════════════════════════════════════════════════════════════════╣
5	* ║ Complete runtime emulation for decompiled PS4 games. ║
6	* ║ Includes: Memory, VFS, Syscalls, Threading stubs. ║
7	* ╚═══════════════════════════════════════════════════════════════════════════╝
8	*/
9
10	#include "runtime.h"
11	#include "ps4_memory.h"
12	#include "ps4_tls.h"
13	#include <cstring>
14	#include <filesystem>
15	#include <fstream>
16	#include <iostream>
17	#include <map>
18
19	/*
20	* ┌─────────────────────────────────────────────────────────────────┐
21	* │ VFS - VIRTUAL FILE SYSTEM │
22	* └─────────────────────────────────────────────────────────────────┘
23	* Translates PS4 paths to host filesystem paths.
24	*
25	* /app0/ → assets/ (Game installation)
26	* /data/ → savedata/ (Save game data)
27	* /host/ → debug/ (Debug output)
28	* /download0/ → dlc/ (DLC content)
29	*/
30
31	static std::filesystem::path g_assetsRoot;
32
33	std::string resolve_path(const std::string &ps4_path) {
34	std::string path = ps4_path;
35
36	// Remove leading slash if present
37	if (!path.empty() && path[0] == '/') {
38	path = path.substr(1);
39	}
40
41	// Mount point translation
42	if (path.find("app0/") == 0) {
43	return (g_assetsRoot / path.substr(5)).string();
44	}
45	if (path.find("data/") == 0) {
46	return (g_assetsRoot.parent_path() / "savedata" / path.substr(5)).string();
47	}
48	if (path.find("host/") == 0) {
49	return (g_assetsRoot.parent_path() / "debug" / path.substr(5)).string();
50	}
51	if (path.find("download0/") == 0) {
52	return (g_assetsRoot.parent_path() / "dlc" / path.substr(10)).string();
53	}
54
55	// Default: assume it's relative to assets
56	return (g_assetsRoot / path).string();
57	}
58
59	/*
60	* ┌─────────────────────────────────────────────────────────────────┐
61	* │ FILE DESCRIPTOR TABLE │
62	* └─────────────────────────────────────────────────────────────────┘
63	* Tracks open files for sceKernel* syscalls.
64	*/
65
66	static std::map<int, std::fstream *> g_openFiles;
67	static int g_nextFd = 100; // Start at 100 to avoid conflicts
68
69	/*
70	* ┌─────────────────────────────────────────────────────────────────┐
71	* │ RUNTIME INITIALIZATION │
72	* └─────────────────────────────────────────────────────────────────┘
73	*/
74
75	void runtime_init() {
76	std::cout << "[RUNTIME] ══════════════════════════════════════════════"
77	<< std::endl;
78	std::cout << "[RUNTIME] Initializing PS4 Mock Runtime..." << std::endl;
79
80	// Initialize TLS
81	if (!PS4Emu::InitializeTLS()) {
82	std::cerr << "[RUNTIME] FATAL: Failed to initialize TLS!" << std::endl;
83	std::exit(1);
84	}
85
86	// Create main thread TCB
87	PS4Emu::Tcb *mainTcb = PS4Emu::CreateTcb();
88	PS4Emu::SetTcbBase(mainTcb);
89	std::cout << "[RUNTIME] Main thread TCB initialized" << std::endl;
90
91	// Initialize memory emulation
92	if (!PS4Emu::InitializeMemory()) {
93	std::cerr << "[RUNTIME] FATAL: Failed to initialize memory emulation!"
94	<< std::endl;
95	std::exit(1);
96	}
97
98	// Set up VFS root
99	g_assetsRoot = std::filesystem::current_path() / "assets";
100	std::cout << "[RUNTIME] VFS Root: \"" << g_assetsRoot.string() << "\""
101	<< std::endl;
102
103	// Create required directories
104	std::filesystem::create_directories(g_assetsRoot);
105	std::filesystem::create_directories(g_assetsRoot.parent_path() / "savedata");
106	std::filesystem::create_directories(g_assetsRoot.parent_path() / "debug");
107
108	std::cout << "[RUNTIME] ══════════════════════════════════════════════"
109	<< std::endl;
110	}
111
112	void runtime_shutdown() {
113	std::cout << "[RUNTIME] Shutting down..." << std::endl;
114
115	// Close all open files
116	for (auto &[fd, file] : g_openFiles) {
117	if (file) {
118	file->close();
119	delete file;
120	}
121	}
122	g_openFiles.clear();
123
124	// Shutdown memory
125	PS4Emu::ShutdownMemory();
126	}
127
128	/*
129	* ┌─────────────────────────────────────────────────────────────────┐
130	* │ PS4 KERNEL SYSCALLS │
131	* └─────────────────────────────────────────────────────────────────┘
132	* Note: Most syscalls are now implemented in:
133	* - ps4_kernel.cpp (file, memory, time syscalls)
134	* - ps4_pthread.cpp (threading primitives)
135	* - ps4_stubs.cpp (PAD, Audio, Video, User Service, etc.)
136	*/
137
138	extern "C" {
139
140	// ─────────────────────── MEMORY (ADDITIONAL) ───────────────────────
141
142	void sceKernelMmap(void addr, size_t len, int prot, int flags, int fd,
143	off_t offset) {
144	std::cout << "[SYSCALL] sceKernelMmap(len=" << len
145	<< ") -> using PS4Emu::TranslateAddress" << std::endl;
146	return PS4Emu::TranslateAddress(reinterpret_cast<uint64_t>(addr));
147	}
148
149	// ─────────────────────── MODULES ───────────────────────
150
151	int sceKernelLoadStartModule(const char path, size_t args, const void argp,
152	unsigned int flags, void option, int result) {
153	std::cout << "[SYSCALL] sceKernelLoadStartModule(\"" << path << "\") -> STUB"
154	<< std::endl;
155	if (result)
156	*result = 0;
157	return 1;
158	}
159
160	} // extern "C"
161

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