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This commit is contained in:
lizzie 2026-04-01 19:03:39 +00:00
parent a54eadb12b
commit 6960994bf4
1 changed files with 4 additions and 6 deletions
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10
src/dynarmic/src/dynarmic/backend/exception_handler_posix.cpp
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@ -40,16 +40,13 @@ struct CodeBlockInfo {
};
class SigHandler {
static constexpr std::size_t signal_stack_size = std::max<std::size_t>(SIGSTKSZ, 2 * 1024 * 1024);
auto FindCodeBlockInfo(u64 offset) noexcept {
return std::find_if(code_block_infos.begin(), code_block_infos.end(), [&](auto const& e) {
return e.first <= offset && e.first + e.second.size > offset;
});
}
static void SigAction(int sig, siginfo_t* info, void* raw_context);
alignas(16) std::array<u8, signal_stack_size> signal_stack_memory;
std::vector<u8> signal_stack_memory;
ankerl::unordered_dense::map<u64, CodeBlockInfo> code_block_infos;
std::shared_mutex code_block_infos_mutex;
struct sigaction old_sa_segv;
@ -57,9 +54,10 @@ class SigHandler {
bool supports_fast_mem = true;
public:
SigHandler() noexcept {
signal_stack_memory.resize(std::max<std::size_t>(SIGSTKSZ, 2 * 1024 * 1024), 0);
stack_t signal_stack{};
signal_stack.ss_sp = std::addressof(signal_stack_memory);
signal_stack.ss_size = signal_stack_size;
signal_stack.ss_sp = signal_stack_memory.data();
signal_stack.ss_size = signal_stack_memory.size();
signal_stack.ss_flags = 0;
if (sigaltstack(&signal_stack, nullptr) != 0) {
fmt::print(stderr, "dynarmic: POSIX SigHandler: init failure at sigaltstack\n");