mirror of
https://github.com/FEX-Emu/FEX.git
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240 lines
8.5 KiB
C++
240 lines
8.5 KiB
C++
/*
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$info$
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tags: LinuxSyscalls|syscalls-x86-32
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$end_info$
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*/
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#include "Tests/LinuxSyscalls/SignalDelegator.h"
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#include "Tests/LinuxSyscalls/Syscalls.h"
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#include "Tests/LinuxSyscalls/x64/Syscalls.h"
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#include "Tests/LinuxSyscalls/x32/Syscalls.h"
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#include "Tests/LinuxSyscalls/x32/Types.h"
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#include <FEXCore/Core/SignalDelegator.h>
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#include <FEXCore/Core/UContext.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdint.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include <time.h>
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namespace FEXCore::Core {
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struct CpuStateFrame;
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}
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ARG_TO_STR(FEX::HLE::x32::compat_ptr<FEXCore::x86::siginfo_t>, "%lx")
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namespace FEX::HLE::x32 {
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void CopySigInfo(FEXCore::x86::siginfo_t *Info, siginfo_t const &Host) {
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// Copy the basic things first
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Info->si_signo = Host.si_signo;
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Info->si_errno = Host.si_errno;
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Info->si_code = Host.si_code;
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// Check si_code to determine how we need to interpret this
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if (Info->si_code == SI_TIMER) {
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// SI_TIMER means pid, uid, value
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Info->_sifields._timer.tid = Host.si_timerid;
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Info->_sifields._timer.overrun = Host.si_overrun;
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Info->_sifields._timer.sigval.sival_int = Host.si_value.sival_int;
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}
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else {
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// Now we need to copy over the more complex things
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switch (Info->si_signo) {
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case SIGSEGV:
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case SIGBUS:
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// This is the address trying to be accessed, not the RIP
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Info->_sifields._sigfault.addr = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(Host.si_addr));
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break;
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case SIGFPE:
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case SIGILL:
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// Can't really give a real result here. This is the RIP causing a sigill or sigfpe
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// Claim at RIP 0 for now
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Info->_sifields._sigfault.addr = 0;
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break;
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case SIGCHLD:
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Info->_sifields._sigchld.pid = Host.si_pid;
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Info->_sifields._sigchld.uid = Host.si_uid;
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Info->_sifields._sigchld.status = Host.si_status;
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Info->_sifields._sigchld.utime = Host.si_utime;
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Info->_sifields._sigchld.stime = Host.si_stime;
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break;
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case SIGALRM:
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case SIGVTALRM:
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Info->_sifields._timer.tid = Host.si_timerid;
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Info->_sifields._timer.overrun = Host.si_overrun;
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Info->_sifields._timer.sigval.sival_int = Host.si_int;
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break;
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default:
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LogMan::Msg::EFmt("Unhandled siginfo_t for sigtimedwait: {}", Info->si_signo);
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break;
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}
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}
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}
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void RegisterSignals(FEX::HLE::SyscallHandler *Handler) {
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// Only gets the lower 32-bits of the signal mask
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REGISTER_SYSCALL_IMPL_X32(sgetmask, [](FEXCore::Core::CpuStateFrame *Frame) -> uint64_t {
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uint64_t Set{};
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FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigProcMask(0, nullptr, &Set);
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return Set & ~0U;
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});
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// Only controls the lower 32-bits of the signal mask
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// Blocks the upper 32-bits
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REGISTER_SYSCALL_IMPL_X32(ssetmask, [](FEXCore::Core::CpuStateFrame *Frame, uint32_t New) -> uint64_t {
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uint64_t Set{};
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uint64_t NewSet = (~0ULL << 32) | New;
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FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigProcMask(SIG_SETMASK, &NewSet, &Set);
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return Set & ~0U;
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});
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// Only masks the lower 32-bits of the signal mask
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// The upper 32-bits are still active (unmasked) and can signal the program
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REGISTER_SYSCALL_IMPL_X32(sigsuspend, [](FEXCore::Core::CpuStateFrame *Frame, uint32_t Mask) -> uint64_t {
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uint64_t Mask64 = Mask;
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return FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigSuspend(&Mask64, 8);
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});
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REGISTER_SYSCALL_IMPL_X32(sigpending, [](FEXCore::Core::CpuStateFrame *Frame, compat_old_sigset_t *set) -> uint64_t {
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uint64_t HostSet{};
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uint64_t Result = FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigPending(&HostSet, 8);
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if (Result == 0) {
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// This old interface only returns the lower signals
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*set = HostSet & ~0U;
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}
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return Result;
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});
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REGISTER_SYSCALL_IMPL_X32(signal, [](FEXCore::Core::CpuStateFrame *Frame, int signum, uint32_t handler) -> uint64_t {
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FEXCore::GuestSigAction newact{};
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FEXCore::GuestSigAction oldact{};
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newact.sigaction_handler.handler = reinterpret_cast<decltype(newact.sigaction_handler.handler)>(handler);
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FEX::HLE::_SyscallHandler->GetSignalDelegator()->RegisterGuestSignalHandler(signum, &newact, &oldact);
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return static_cast<uint32_t>(reinterpret_cast<uint64_t>(oldact.sigaction_handler.handler));
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});
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REGISTER_SYSCALL_IMPL_X32(sigaction, [](FEXCore::Core::CpuStateFrame *Frame, int signum, const OldGuestSigAction_32 *act, OldGuestSigAction_32 *oldact) -> uint64_t {
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FEXCore::GuestSigAction *act64_p{};
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FEXCore::GuestSigAction *old64_p{};
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FEXCore::GuestSigAction act64{};
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if (act) {
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act64 = *act;
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act64_p = &act64;
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}
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FEXCore::GuestSigAction old64{};
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if (oldact) {
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old64_p = &old64;
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}
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uint64_t Result = FEX::HLE::_SyscallHandler->GetSignalDelegator()->RegisterGuestSignalHandler(signum, act64_p, old64_p);
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if (Result == 0 && oldact) {
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*oldact = old64;
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}
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return Result;
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});
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REGISTER_SYSCALL_IMPL_X32(rt_sigaction, [](FEXCore::Core::CpuStateFrame *Frame, int signum, const GuestSigAction_32 *act, GuestSigAction_32 *oldact, size_t sigsetsize) -> uint64_t {
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if (sigsetsize != 8) {
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return -EINVAL;
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}
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FEXCore::GuestSigAction *act64_p{};
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FEXCore::GuestSigAction *old64_p{};
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FEXCore::GuestSigAction act64{};
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if (act) {
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act64 = *act;
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act64_p = &act64;
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}
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FEXCore::GuestSigAction old64{};
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if (oldact) {
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old64_p = &old64;
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}
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uint64_t Result = FEX::HLE::_SyscallHandler->GetSignalDelegator()->RegisterGuestSignalHandler(signum, act64_p, old64_p);
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if (Result == 0 && oldact) {
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*oldact = old64;
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}
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return Result;
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});
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REGISTER_SYSCALL_IMPL_X32(rt_sigtimedwait, [](FEXCore::Core::CpuStateFrame *Frame, uint64_t *set, compat_ptr<FEXCore::x86::siginfo_t> info, const struct timespec32* timeout, size_t sigsetsize) -> uint64_t {
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struct timespec* timeout_ptr{};
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struct timespec tp64{};
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if (timeout) {
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tp64 = *timeout;
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timeout_ptr = &tp64;
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}
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siginfo_t HostInfo{};
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uint64_t Result = FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigTimedWait(set, &HostInfo, timeout_ptr, sigsetsize);
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if (Result != -1) {
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// We need to translate the 64-bit siginfo_t to 32-bit siginfo_t
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CopySigInfo(info, HostInfo);
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}
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return Result;
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});
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REGISTER_SYSCALL_IMPL_X32(rt_sigtimedwait_time64, [](FEXCore::Core::CpuStateFrame *Frame, uint64_t *set, compat_ptr<FEXCore::x86::siginfo_t> info, const struct timespec* timeout, size_t sigsetsize) -> uint64_t {
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siginfo_t HostInfo{};
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uint64_t Result = FEX::HLE::_SyscallHandler->GetSignalDelegator()->GuestSigTimedWait(set, &HostInfo, timeout, sigsetsize);
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if (Result != -1) {
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// We need to translate the 64-bit siginfo_t to 32-bit siginfo_t
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CopySigInfo(info, HostInfo);
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}
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return Result;
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});
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if (Handler->IsHostKernelVersionAtLeast(5, 1, 0)) {
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REGISTER_SYSCALL_IMPL_X32(pidfd_send_signal, [](FEXCore::Core::CpuStateFrame *Frame, int pidfd, int sig, compat_ptr<FEXCore::x86::siginfo_t> info, unsigned int flags) -> uint64_t {
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siginfo_t *InfoHost_ptr{};
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siginfo_t InfoHost{};
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if (info) {
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InfoHost = *info;
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InfoHost_ptr = &InfoHost;
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}
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uint64_t Result = ::syscall(SYSCALL_DEF(pidfd_send_signal), pidfd, sig, InfoHost_ptr, flags);
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SYSCALL_ERRNO();
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});
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}
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else {
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REGISTER_SYSCALL_IMPL_X32(pidfd_send_signal, UnimplementedSyscallSafe);
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}
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REGISTER_SYSCALL_IMPL_X32_PASS(rt_sigqueueinfo, [](FEXCore::Core::CpuStateFrame *Frame, pid_t pid, int sig, compat_ptr<FEXCore::x86::siginfo_t> info) -> uint64_t {
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siginfo_t info64{};
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siginfo_t *info64_p{};
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if (info) {
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info64_p = &info64;
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}
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uint64_t Result = ::syscall(SYSCALL_DEF(rt_sigqueueinfo), pid, sig, info64_p);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL_X32_PASS(rt_tgsigqueueinfo, [](FEXCore::Core::CpuStateFrame *Frame, pid_t tgid, pid_t tid, int sig, compat_ptr<FEXCore::x86::siginfo_t> info) -> uint64_t {
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siginfo_t info64{};
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siginfo_t *info64_p{};
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if (info) {
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info64_p = &info64;
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}
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uint64_t Result = ::syscall(SYSCALL_DEF(rt_tgsigqueueinfo), tgid, tid, sig, info64_p);
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SYSCALL_ERRNO();
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});
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}
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}
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