PRX loader: Fix libfs_155.sprx loading

Fix relocations' segments referencing when there are "empty" (memsize=0) LOAD segments.

rpcs3/Emu/Cell/PPUAnalyser.cpp

@@ -593,6 +593,8 @@ void ppu_module::analyse(u32 lib_toc, u32 entry)
 		// Grope for OPD section (TODO: optimization, better constraints)
 		for (const auto& seg : segs)
 		{
+			if (!seg.addr) continue;
+
 			for (vm::cptr<u32> ptr = vm::cast(seg.addr); ptr.addr() < seg.addr + seg.size; ptr++)
 			{
 				if (ptr[0] >= start && ptr[0] < end && ptr[0] % 4 == 0 && ptr[1] == toc)
@@ -616,6 +618,8 @@ void ppu_module::analyse(u32 lib_toc, u32 entry)
 	// Find references indiscriminately
 	for (const auto& seg : segs)
 	{
+		if (!seg.addr) continue;
+
 		for (vm::cptr<u32> ptr = vm::cast(seg.addr); ptr.addr() < seg.addr + seg.size; ptr++)
 		{
 			const u32 value = *ptr;
@@ -627,6 +631,8 @@ void ppu_module::analyse(u32 lib_toc, u32 entry)
 
 			for (const auto& _seg : segs)
 			{
+				if (!_seg.addr) continue;
+
 				if (value >= _seg.addr && value < _seg.addr + _seg.size)
 				{
 					addr_heap.emplace(value);

rpcs3/Emu/Cell/PPUModule.cpp

@@ -811,6 +811,10 @@ std::shared_ptr<lv2_prx> ppu_load_prx(const ppu_prx_object& elf, const std::stri
 		{
 		case 0x1: // LOAD
 		{
+			auto& _seg = prx->segs.emplace_back();
+			_seg.flags = prog.p_flags;
+			_seg.type = p_type;
+
 			if (prog.p_memsz)
 			{
 				const u32 mem_size = ::narrow<u32>(prog.p_memsz);
@@ -840,13 +844,9 @@ std::shared_ptr<lv2_prx> ppu_load_prx(const ppu_prx_object& elf, const std::stri
 					ppu_register_range(addr, mem_size);
 				}
 
-				ppu_segment _seg;
 				_seg.addr = addr;
 				_seg.size = mem_size;
 				_seg.filesz = file_size;
-				_seg.type = p_type;
-				_seg.flags = prog.p_flags;
-				prx->segs.emplace_back(_seg);
 			}
 
 			break;
@@ -908,10 +908,22 @@ std::shared_ptr<lv2_prx> ppu_load_prx(const ppu_prx_object& elf, const std::stri
 			{
 				const auto& rel = reinterpret_cast<const ppu_prx_relocation_info&>(prog.bin[i]);
 
+				if (rel.offset >= prx->segs.at(rel.index_addr).size)
+				{
+					fmt::throw_exception("Relocation offset out of segment memory! (offset=0x%x, index_addr=%u)", rel.offset, rel.index_addr);
+				}
+
+				const u32 data_base = rel.index_value == 0xFF ? 0 : prx->segs.at(rel.index_value).addr;
+
+				if (rel.index_value != 0xFF && !data_base)
+				{
+					fmt::throw_exception("Empty segment has been referenced for relocation data! (reloc_offset=0x%x, index_value=%u)", i, rel.index_value);
+				}
+
 				ppu_reloc _rel;
 				const u32 raddr = _rel.addr = vm::cast(prx->segs.at(rel.index_addr).addr + rel.offset);
 				const u32 rtype = _rel.type = rel.type;
-				const u64 rdata = _rel.data = rel.index_value == 0xFF ? rel.ptr.addr().value() : prx->segs.at(rel.index_value).addr + rel.ptr.addr();
+				const u64 rdata = _rel.data = data_base + rel.ptr.addr();
 				prx->relocs.emplace_back(_rel);
 
 				switch (rtype)

rpcs3/Emu/Cell/PPUThread.cpp

@@ -2324,9 +2324,10 @@ extern void ppu_initialize(const ppu_module& info)
 		globals.emplace_back(fmt::format("__cptr%x", suffix), reinterpret_cast<u64>(vm::g_exec_addr));
 
 		// Initialize segments for relocations
-		for (u32 i = 0; i < info.segs.size(); i++)
+		for (u32 i = 0, num = 0; i < info.segs.size(); i++)
 		{
-			globals.emplace_back(fmt::format("__seg%u_%x", i, suffix), info.segs[i].addr);
+			if (!info.segs[i].addr) continue;
+			globals.emplace_back(fmt::format("__seg%u_%x", num++, suffix), info.segs[i].addr);
 		}
 
 		link_workload.emplace_back(obj_name, false);
@@ -2490,6 +2491,7 @@ extern void ppu_initialize(const ppu_module& info)
 
 			for (const auto& seg : info.segs)
 			{
+				if (!seg.addr) continue;
 				*jit_mod.vars[index++] = seg.addr;
 			}
 		}

rpcs3/Emu/Cell/PPUTranslator.cpp

@@ -70,6 +70,7 @@ PPUTranslator::PPUTranslator(LLVMContext& context, Module* _module, const ppu_mo
 	// Create segment variables
 	for (const auto& seg : m_info.segs)
 	{
+		if (!seg.addr) continue;
 		auto gv = new GlobalVariable(*_module, GetType<u64>(), true, GlobalValue::ExternalLinkage, 0, fmt::format("__seg%u_%x", m_segs.size(), gsuffix));
 		gv->setInitializer(ConstantInt::get(GetType<u64>(), seg.addr));
 		gv->setExternallyInitialized(true);

rpcs3/Emu/Cell/lv2/sys_prx.cpp

@@ -750,6 +750,7 @@ error_code _sys_prx_get_module_info(ppu_thread& ppu, u32 id, u64 flags, vm::ptr<
 		u32 i = 0;
 		for (; i < prx->segs.size() && i < pOpt->info->segments_num; i++)
 		{
+			if (!prx->segs[i].addr) continue; // TODO: Check this
 			pOpt->info->segments[i].index = i;
 			pOpt->info->segments[i].base = prx->segs[i].addr;
 			pOpt->info->segments[i].filesz = prx->segs[i].filesz;

rpcs3/Emu/System.cpp

@@ -1150,11 +1150,6 @@ game_boot_result Emulator::Load(const std::string& title_id, bool add_only, bool
 						// Check .sprx filename
 						if (fmt::to_upper(entry.name).ends_with(".SPRX"))
 						{
-							if (entry.name == "libfs_155.sprx")
-							{
-								continue;
-							}
-
 							// Get full path
 							file_queue.emplace_back(dir_queue[i] + entry.name, 0);
 							g_progr_ftotal++;