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https://github.com/boykopovar/AnyPS5.git
synced 2026-10-22 00:22:57 -05:00
MerijnandClaude Opus 5.5
e975d9a926
On Windows the call returned no eh_frame_hdr for every address, so a title's own libc (its libunwind) found no frame information and terminated on the first C++ exception thrown in guest code. PPSA12544 died that way after its intro cinematic: IL2CPP raised an AmbiguousMatchException that Unity catches and logs, and the runtime called terminate instead. For an address in a relinked guest image the call now returns the PT_GNU_EH_FRAME segment named by .ehmeta, the eh_frame it points to and its size, and the image as seg0; host images keep the empty answer. AI-assisted: yes Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
#include "SceTypes.hpp"
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#include <cstdint>
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#include <cstdlib>
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#include <cstring>
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#include <windows.h>
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extern "C" int APS5_VABI sceKernelGetModuleInfoForUnwind(uint64_t addr, int flags, ModuleInfoForUnwind* info);
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static void Require(bool value) { if (!value) std::abort(); }
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__attribute__((section(".ehmeta"), used)) static volatile std::uint32_t ehMeta = 0;
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struct alignas(4) FrameHeader {
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std::uint8_t version = 1;
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std::uint8_t framePointerEncoding = 0x1b;
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std::uint8_t countEncoding = 0x03;
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std::uint8_t tableEncoding = 0x3b;
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std::int32_t frames = 0;
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std::uint32_t count = 0;
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};
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struct alignas(4) Frames {
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std::uint32_t cieLength = 12;
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std::uint32_t cieId = 0;
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std::uint8_t cie[8] = {1, 0, 1, 0x78, 16, 0, 0, 0};
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std::uint32_t terminator = 0;
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};
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static FrameHeader header;
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static Frames frames;
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int main() {
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const auto base = reinterpret_cast<std::uint64_t>(GetModuleHandleW(nullptr));
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header.frames = static_cast<std::int32_t>(reinterpret_cast<std::intptr_t>(&frames) - reinterpret_cast<std::intptr_t>(&header.frames));
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DWORD old = 0;
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Require(VirtualProtect(const_cast<std::uint32_t*>(&ehMeta), sizeof(ehMeta), PAGE_READWRITE, &old));
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ehMeta = static_cast<std::uint32_t>(reinterpret_cast<std::uint64_t>(&header) - base);
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ModuleInfoForUnwind info{};
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Require(sceKernelGetModuleInfoForUnwind(reinterpret_cast<std::uint64_t>(&main), 0, &info) == 0);
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Require(info.st_size == sizeof(ModuleInfoForUnwind));
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Require(info.eh_frame_hdr_addr == reinterpret_cast<std::uint64_t>(&header));
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Require(info.eh_frame_addr == reinterpret_cast<std::uint64_t>(&frames));
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Require(info.eh_frame_size == 4 + 12);
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Require(info.seg0_addr == base);
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const auto* dos = reinterpret_cast<const IMAGE_DOS_HEADER*>(base);
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const auto* nt = reinterpret_cast<const IMAGE_NT_HEADERS64*>(base + dos->e_lfanew);
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Require(info.seg0_size == nt->OptionalHeader.SizeOfImage);
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ModuleInfoForUnwind host{};
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Require(sceKernelGetModuleInfoForUnwind(reinterpret_cast<std::uint64_t>(&GetModuleHandleW), 0, &host) == 0);
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Require(host.eh_frame_hdr_addr == 0 && host.eh_frame_addr == 0 && host.eh_frame_size == 0);
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}
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