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FEX-Emu--FEX/Source/Tools/FEXLoader/LinuxSyscalls/x32/FD.cpp
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// SPDX-License-Identifier: MIT
/*
$info$
tags: LinuxSyscalls|syscalls-x86-32
$end_info$
*/
#include "LinuxSyscalls/Syscalls.h"
#include "LinuxSyscalls/x32/IoctlEmulation.h"
#include "LinuxSyscalls/x32/Syscalls.h"
#include "LinuxSyscalls/x32/SyscallsEnum.h"
#include "LinuxSyscalls/x32/Types.h"
#include "LinuxSyscalls/x64/Syscalls.h"
#include <FEXCore/Debug/InternalThreadState.h>
#include <FEXCore/Utils/LogManager.h>
#include <FEXCore/Utils/MathUtils.h>
#include <FEXCore/fextl/vector.h>
#include <algorithm>
#include <cstdint>
#include <fcntl.h>
#include <limits>
#include <poll.h>
#include <signal.h>
#include <stddef.h>
#include <string.h>
#include <sys/select.h>
#include <sys/sendfile.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <sys/time.h>
#include <sys/timerfd.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <syscall.h>
#include <time.h>
#include <type_traits>
#include <unistd.h>
ARG_TO_STR(FEX::HLE::x32::compat_ptr<FEX::HLE::x32::sigset_argpack32>, "%lx")
namespace FEXCore::Core {
struct CpuStateFrame;
}
namespace FEX::HLE::x32 {
// Used to ensure no bogus values are passed into readv/writev family syscalls.
// This is mainly to sanitize vector sizing. It's fine for the bogus value
// itself to pass into the syscall, since the kernel will handle it.
static constexpr int SanitizeIOCount(int count) {
return std::max(0, count);
}
#ifdef _M_X86_64
uint32_t ioctl_32(FEXCore::Core::CpuStateFrame*, int fd, uint32_t cmd, uint32_t args) {
uint32_t Result{};
__asm volatile("int $0x80;"
: "=a" (Result)
: "a" (SYSCALL_x86_ioctl)
, "b" (fd)
, "c" (cmd)
, "d" (args)
: "memory");
return Result;
}
#endif
auto fcntlHandler = [](FEXCore::Core::CpuStateFrame *Frame, int fd, int cmd, uint64_t arg) -> uint64_t {
// fcntl64 struct directly matches the 64bit fcntl op
// cmd just needs to be fixed up
// These are redefined to be their non-64bit tagged value on x86-64
constexpr int OP_GETLK64_32 = 12;
constexpr int OP_SETLK64_32 = 13;
constexpr int OP_SETLKW64_32 = 14;
void *lock_arg = (void*)arg;
struct flock tmp{};
int old_cmd = cmd;
switch (old_cmd) {
case OP_GETLK64_32: {
cmd = F_GETLK;
lock_arg = (void*)&tmp;
tmp = *reinterpret_cast<flock64_32*>(arg);
break;
}
case OP_SETLK64_32: {
cmd = F_SETLK;
lock_arg = (void*)&tmp;
tmp = *reinterpret_cast<flock64_32*>(arg);
break;
}
case OP_SETLKW64_32: {
cmd = F_SETLKW;
lock_arg = (void*)&tmp;
tmp = *reinterpret_cast<flock64_32*>(arg);
break;
}
case F_OFD_SETLK:
case F_OFD_GETLK:
case F_OFD_SETLKW: {
lock_arg = (void*)&tmp;
tmp = *reinterpret_cast<flock64_32*>(arg);
break;
}
case F_GETLK:
case F_SETLK:
case F_SETLKW: {
lock_arg = (void*)&tmp;
tmp = *reinterpret_cast<flock_32*>(arg);
break;
}
case F_SETFL:
lock_arg = reinterpret_cast<void*>(FEX::HLE::RemapFromX86Flags(arg));
break;
// Maps directly
case F_DUPFD:
case F_DUPFD_CLOEXEC:
case F_GETFD:
case F_SETFD:
case F_GETFL:
break;
default:
LOGMAN_MSG_A_FMT("Unhandled fcntl64: 0x{:x}", cmd);
break;
}
uint64_t Result = ::fcntl(fd, cmd, lock_arg);
if (Result != -1) {
switch (old_cmd) {
case OP_GETLK64_32: {
*reinterpret_cast<flock64_32*>(arg) = tmp;
break;
}
case F_OFD_GETLK: {
*reinterpret_cast<flock64_32*>(arg) = tmp;
break;
}
case F_GETLK: {
*reinterpret_cast<flock_32*>(arg) = tmp;
break;
}
break;
case F_DUPFD:
case F_DUPFD_CLOEXEC:
FEX::HLE::x32::CheckAndAddFDDuplication(fd, Result);
break;
case F_GETFL: {
Result = FEX::HLE::RemapToX86Flags(Result);
break;
}
default: break;
}
}
SYSCALL_ERRNO();
};
auto selectHandler = [](FEXCore::Core::CpuStateFrame *Frame, int nfds, fd_set32 *readfds, fd_set32 *writefds, fd_set32 *exceptfds, struct timeval32 *timeout) -> uint64_t {
struct timeval tp64{};
if (timeout) {
tp64 = *timeout;
}
fd_set Host_readfds;
fd_set Host_writefds;
fd_set Host_exceptfds;
FD_ZERO(&Host_readfds);
FD_ZERO(&Host_writefds);
FD_ZERO(&Host_exceptfds);
// Round up to the full 32bit word
uint32_t NumWords = FEXCore::AlignUp(nfds, 32) / 4;
if (readfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = readfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_readfds);
}
}
}
}
if (writefds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = writefds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_writefds);
}
}
}
}
if (exceptfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = exceptfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_exceptfds);
}
}
}
}
uint64_t Result = ::select(nfds,
readfds ? &Host_readfds : nullptr,
writefds ? &Host_writefds : nullptr,
exceptfds ? &Host_exceptfds : nullptr,
timeout ? &tp64 : nullptr);
if (readfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_readfds)) {
readfds[i/32] |= 1 << (i & 31);
} else {
readfds[i/32] &= ~(1 << (i & 31));
}
}
}
if (writefds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_writefds)) {
writefds[i/32] |= 1 << (i & 31);
} else {
writefds[i/32] &= ~(1 << (i & 31));
}
}
}
if (exceptfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_exceptfds)) {
exceptfds[i/32] |= 1 << (i & 31);
} else {
exceptfds[i/32] &= ~(1 << (i & 31));
}
}
}
if (timeout) {
*timeout = tp64;
}
SYSCALL_ERRNO();
};
void RegisterFD(FEX::HLE::SyscallHandler *Handler) {
REGISTER_SYSCALL_IMPL_X32_PASS(poll, [](FEXCore::Core::CpuStateFrame *Frame, struct pollfd *fds, nfds_t nfds, int timeout) -> uint64_t {
uint64_t Result = ::poll(fds, nfds, timeout);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(ppoll, [](FEXCore::Core::CpuStateFrame *Frame, struct pollfd *fds, nfds_t nfds, timespec32 *timeout_ts, const uint64_t *sigmask, size_t sigsetsize) -> uint64_t {
// sigsetsize is unused here since it is currently a constant and not exposed through glibc
struct timespec tp64{};
struct timespec *timed_ptr{};
if (timeout_ts) {
tp64 = *timeout_ts;
timed_ptr = &tp64;
}
uint64_t Result = ::syscall(SYSCALL_DEF(ppoll),
fds,
nfds,
timed_ptr,
sigmask,
sigsetsize);
if (timeout_ts) {
*timeout_ts = tp64;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(ppoll_time64, ppoll, [](FEXCore::Core::CpuStateFrame *Frame, struct pollfd *fds, nfds_t nfds, struct timespec *timeout_ts, const uint64_t *sigmask, size_t sigsetsize) -> uint64_t {
uint64_t Result = ::syscall(SYSCALL_DEF(ppoll),
fds,
nfds,
timeout_ts,
sigmask,
sigsetsize);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(_llseek, [](FEXCore::Core::CpuStateFrame *Frame, uint32_t fd, uint32_t offset_high, uint32_t offset_low, loff_t *result, uint32_t whence) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Result = lseek(fd, Offset, whence);
if (Result != -1) {
*result = Result;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(readv, [](FEXCore::Core::CpuStateFrame *Frame, int fd, const struct iovec32 *iov, int iovcnt) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::readv(fd, Host_iovec.data(), iovcnt);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(writev, [](FEXCore::Core::CpuStateFrame *Frame, int fd, const struct iovec32 *iov, int iovcnt) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::writev(fd, Host_iovec.data(), iovcnt);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(chown32, chown, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, uid_t owner, gid_t group) -> uint64_t {
uint64_t Result = ::chown(pathname, owner, group);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(fchown32, fchown, [](FEXCore::Core::CpuStateFrame *Frame, int fd, uid_t owner, gid_t group) -> uint64_t {
uint64_t Result = ::fchown(fd, owner, group);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(lchown32, lchown, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, uid_t owner, gid_t group) -> uint64_t {
uint64_t Result = ::lchown(pathname, owner, group);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(oldstat, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, oldstat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Stat(pathname, &host_stat);
if (Result != -1) {
if (host_stat.st_ino > std::numeric_limits<decltype(buf->st_ino)>::max()) {
return -EOVERFLOW;
}
if (host_stat.st_nlink > std::numeric_limits<decltype(buf->st_nlink)>::max()) {
return -EOVERFLOW;
}
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(oldfstat, [](FEXCore::Core::CpuStateFrame *Frame, int fd, oldstat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = ::fstat(fd, &host_stat);
if (Result != -1) {
if (host_stat.st_ino > std::numeric_limits<decltype(buf->st_ino)>::max()) {
return -EOVERFLOW;
}
if (host_stat.st_nlink > std::numeric_limits<decltype(buf->st_nlink)>::max()) {
return -EOVERFLOW;
}
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(oldlstat, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, oldstat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Lstat(path, &host_stat);
if (Result != -1) {
if (host_stat.st_ino > std::numeric_limits<decltype(buf->st_ino)>::max()) {
return -EOVERFLOW;
}
if (host_stat.st_nlink > std::numeric_limits<decltype(buf->st_nlink)>::max()) {
return -EOVERFLOW;
}
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(stat, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, stat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Stat(pathname, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fstat, [](FEXCore::Core::CpuStateFrame *Frame, int fd, stat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = ::fstat(fd, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(lstat, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, stat32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Lstat(path, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(stat64, [](FEXCore::Core::CpuStateFrame *Frame, const char *pathname, stat64_32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Stat(pathname, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(lstat64, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, stat64_32 *buf) -> uint64_t {
struct stat host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Lstat(path, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fstat64, [](FEXCore::Core::CpuStateFrame *Frame, int fd, stat64_32 *buf) -> uint64_t {
struct stat64 host_stat;
uint64_t Result = ::fstat64(fd, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(statfs, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, statfs32_32 *buf) -> uint64_t {
struct statfs host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Statfs(path, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fstatfs, [](FEXCore::Core::CpuStateFrame *Frame, int fd, statfs32_32 *buf) -> uint64_t {
struct statfs host_stat;
uint64_t Result = ::fstatfs(fd, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fstatfs64, [](FEXCore::Core::CpuStateFrame *Frame, int fd, size_t sz, struct statfs64_32 *buf) -> uint64_t {
LOGMAN_THROW_AA_FMT(sz == sizeof(struct statfs64_32), "This needs to match");
struct statfs64 host_stat;
uint64_t Result = ::fstatfs64(fd, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(statfs64, [](FEXCore::Core::CpuStateFrame *Frame, const char *path, size_t sz, struct statfs64_32 *buf) -> uint64_t {
LOGMAN_THROW_AA_FMT(sz == sizeof(struct statfs64_32), "This needs to match");
struct statfs host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.Statfs(path, &host_stat);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
// x86 32-bit fcntl syscall has a historical quirk that it uses the same handler as fcntl64
// This is in direct opposition to all other 32-bit architectures that use the compat_fcntl handler
// This quirk goes back to the start of the Linux 2.6.12-rc2 git history. Seeing history before
// that point to see when this quirk happened would be difficult
//
// For more reference, the compat_fcntl handler blocks a few commands:
// - F_GETLK64
// - F_SETLK64
// - F_SETLKW64
// - F_OFD_GETLK
// - F_OFD_SETLK
// - F_OFD_SETLKW
REGISTER_SYSCALL_IMPL_X32(fcntl, fcntlHandler);
REGISTER_SYSCALL_IMPL_X32(fcntl64, fcntlHandler);
REGISTER_SYSCALL_IMPL_X32(dup, [](FEXCore::Core::CpuStateFrame *Frame, int oldfd) -> uint64_t {
uint64_t Result = ::dup(oldfd);
if (Result != -1) {
CheckAndAddFDDuplication(oldfd, Result);
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(dup2, [](FEXCore::Core::CpuStateFrame *Frame, int oldfd, int newfd) -> uint64_t {
uint64_t Result = ::dup2(oldfd, newfd);
if (Result != -1) {
CheckAndAddFDDuplication(oldfd, newfd);
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(preadv, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
const struct iovec32 *iov,
uint32_t iovcnt,
uint32_t pos_low,
uint32_t pos_high) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::syscall(SYSCALL_DEF(preadv), fd, Host_iovec.data(), iovcnt, pos_low, pos_high);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(pwritev, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
const struct iovec32 *iov,
uint32_t iovcnt,
uint32_t pos_low,
uint32_t pos_high) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::syscall(SYSCALL_DEF(pwritev), fd, Host_iovec.data(), iovcnt, pos_low, pos_high);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(process_vm_readv, [](FEXCore::Core::CpuStateFrame *Frame, pid_t pid, const struct iovec32 *local_iov, unsigned long liovcnt, const struct iovec32 *remote_iov, unsigned long riovcnt, unsigned long flags) -> uint64_t {
fextl::vector<iovec> Host_local_iovec(local_iov, local_iov + SanitizeIOCount(liovcnt));
fextl::vector<iovec> Host_remote_iovec(remote_iov, remote_iov + SanitizeIOCount(riovcnt));
uint64_t Result = ::process_vm_readv(pid, Host_local_iovec.data(), liovcnt, Host_remote_iovec.data(), riovcnt, flags);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(process_vm_writev, [](FEXCore::Core::CpuStateFrame *Frame, pid_t pid, const struct iovec32 *local_iov, unsigned long liovcnt, const struct iovec32 *remote_iov, unsigned long riovcnt, unsigned long flags) -> uint64_t {
fextl::vector<iovec> Host_local_iovec(local_iov, local_iov + SanitizeIOCount(liovcnt));
fextl::vector<iovec> Host_remote_iovec(remote_iov, remote_iov + SanitizeIOCount(riovcnt));
uint64_t Result = ::process_vm_writev(pid, Host_local_iovec.data(), liovcnt, Host_remote_iovec.data(), riovcnt, flags);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(preadv2, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
const struct iovec32 *iov,
uint32_t iovcnt,
uint32_t pos_low,
uint32_t pos_high,
int flags) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::syscall(SYSCALL_DEF(preadv2), fd, Host_iovec.data(), iovcnt, pos_low, pos_high, flags);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(pwritev2, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
const struct iovec32 *iov,
uint32_t iovcnt,
uint32_t pos_low,
uint32_t pos_high,
int flags) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + SanitizeIOCount(iovcnt));
uint64_t Result = ::syscall(SYSCALL_DEF(pwritev2), fd, Host_iovec.data(),iovcnt, pos_low, pos_high, flags);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fstatat_64, [](FEXCore::Core::CpuStateFrame *Frame, int dirfd, const char *pathname, stat64_32 *buf, int flag) -> uint64_t {
struct stat64 host_stat;
uint64_t Result = FEX::HLE::_SyscallHandler->FM.NewFSStatAt64(dirfd, pathname, &host_stat, flag);
if (Result != -1) {
*buf = host_stat;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(ioctl, ioctl32);
REGISTER_SYSCALL_IMPL_X32(getdents, [](FEXCore::Core::CpuStateFrame *Frame, int fd, void *dirp, uint32_t count) -> uint64_t {
return GetDentsEmulation<true>(fd, reinterpret_cast<FEX::HLE::x32::linux_dirent_32*>(dirp), count);
});
REGISTER_SYSCALL_IMPL_X32(getdents64, [](FEXCore::Core::CpuStateFrame *Frame, int fd, void *dirp, uint32_t count) -> uint64_t {
uint64_t Result = ::syscall(SYSCALL_DEF(getdents64),
static_cast<uint64_t>(fd),
dirp,
static_cast<uint64_t>(count));
if (Result != -1) {
// Walk each offset
// if we are passing the full d_off to the 32bit application then it seems to break things?
for (size_t i = 0, num = 0; i < Result; ++num) {
linux_dirent_64 *Incoming = (linux_dirent_64*)(reinterpret_cast<uint64_t>(dirp) + i);
Incoming->d_off = num;
i += Incoming->d_reclen;
}
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(select, [](FEXCore::Core::CpuStateFrame *Frame, compat_select_args *arg) -> uint64_t {
return selectHandler(Frame, arg->nfds, arg->readfds, arg->writefds, arg->exceptfds, arg->timeout);
});
REGISTER_SYSCALL_IMPL_X32(_newselect, selectHandler);
REGISTER_SYSCALL_IMPL_X32(pselect6, [](FEXCore::Core::CpuStateFrame *Frame, int nfds, fd_set32 *readfds, fd_set32 *writefds, fd_set32 *exceptfds, timespec32 *timeout, compat_ptr<sigset_argpack32> sigmaskpack) -> uint64_t {
struct timespec tp64{};
if (timeout) {
tp64 = *timeout;
}
fd_set Host_readfds;
fd_set Host_writefds;
fd_set Host_exceptfds;
sigset_t HostSet{};
FD_ZERO(&Host_readfds);
FD_ZERO(&Host_writefds);
FD_ZERO(&Host_exceptfds);
sigemptyset(&HostSet);
// Round up to the full 32bit word
uint32_t NumWords = FEXCore::AlignUp(nfds, 32) / 4;
if (readfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = readfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_readfds);
}
}
}
}
if (writefds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = writefds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_writefds);
}
}
}
}
if (exceptfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = exceptfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_exceptfds);
}
}
}
}
if (sigmaskpack && sigmaskpack->sigset) {
uint64_t *sigmask = sigmaskpack->sigset;
size_t sigsetsize = sigmaskpack->size;
for (int32_t i = 0; i < (sigsetsize * 8); ++i) {
if (*sigmask & (1ULL << i)) {
sigaddset(&HostSet, i + 1);
}
}
}
uint64_t Result = ::pselect(nfds,
readfds ? &Host_readfds : nullptr,
writefds ? &Host_writefds : nullptr,
exceptfds ? &Host_exceptfds : nullptr,
timeout ? &tp64 : nullptr,
&HostSet);
if (readfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_readfds)) {
readfds[i/32] |= 1 << (i & 31);
} else {
readfds[i/32] &= ~(1 << (i & 31));
}
}
}
if (writefds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_writefds)) {
writefds[i/32] |= 1 << (i & 31);
} else {
writefds[i/32] &= ~(1 << (i & 31));
}
}
}
if (exceptfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_exceptfds)) {
exceptfds[i/32] |= 1 << (i & 31);
} else {
exceptfds[i/32] &= ~(1 << (i & 31));
}
}
}
if (timeout) {
*timeout = tp64;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fadvise64_64, [](FEXCore::Core::CpuStateFrame *Frame, int32_t fd, uint32_t offset_low, uint32_t offset_high, uint32_t len_low, uint32_t len_high, int advice) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Len = len_high;
Len <<= 32;
Len |= len_low;
uint64_t Result = ::posix_fadvise64(fd, Offset, Len, advice);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(timerfd_settime64, timerfd_settime, [](FEXCore::Core::CpuStateFrame *Frame, int fd, int flags, const struct itimerspec *new_value, struct itimerspec *old_value) -> uint64_t {
uint64_t Result = ::timerfd_settime(fd, flags, new_value, old_value);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(timerfd_gettime64, timerfd_gettime, [](FEXCore::Core::CpuStateFrame *Frame, int fd, struct itimerspec *curr_value) -> uint64_t {
uint64_t Result = ::timerfd_gettime(fd, curr_value);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(timerfd_settime, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
int flags,
const FEX::HLE::x32::old_itimerspec32 *new_value,
FEX::HLE::x32::old_itimerspec32 *old_value) -> uint64_t {
struct itimerspec new_value_host{};
struct itimerspec old_value_host{};
struct itimerspec *old_value_host_p{};
new_value_host = *new_value;
if (old_value) {
old_value_host_p = &old_value_host;
}
// Flags don't need remapped
uint64_t Result = ::timerfd_settime(fd, flags, &new_value_host, old_value_host_p);
if (Result != -1 && old_value) {
*old_value = old_value_host;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(timerfd_gettime, [](FEXCore::Core::CpuStateFrame *Frame, int fd, FEX::HLE::x32::old_itimerspec32 *curr_value) -> uint64_t {
struct itimerspec Host{};
uint64_t Result = ::timerfd_gettime(fd, &Host);
if (Result != -1) {
*curr_value = Host;
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(pselect6_time64, [](FEXCore::Core::CpuStateFrame *Frame, int nfds, fd_set32 *readfds, fd_set32 *writefds, fd_set32 *exceptfds, struct timespec *timeout, compat_ptr<sigset_argpack32> sigmaskpack) -> uint64_t {
fd_set Host_readfds;
fd_set Host_writefds;
fd_set Host_exceptfds;
sigset_t HostSet{};
FD_ZERO(&Host_readfds);
FD_ZERO(&Host_writefds);
FD_ZERO(&Host_exceptfds);
sigemptyset(&HostSet);
// Round up to the full 32bit word
uint32_t NumWords = FEXCore::AlignUp(nfds, 32) / 4;
if (readfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = readfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_readfds);
}
}
}
}
if (writefds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = writefds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_writefds);
}
}
}
}
if (exceptfds) {
for (int i = 0; i < NumWords; ++i) {
uint32_t FD = exceptfds[i];
int32_t Rem = nfds - (i * 32);
for (int j = 0; j < 32 && j < Rem; ++j) {
if ((FD >> j) & 1) {
FD_SET(i * 32 + j, &Host_exceptfds);
}
}
}
}
if (sigmaskpack && sigmaskpack->sigset) {
uint64_t *sigmask = sigmaskpack->sigset;
size_t sigsetsize = sigmaskpack->size;
for (int32_t i = 0; i < (sigsetsize * 8); ++i) {
if (*sigmask & (1ULL << i)) {
sigaddset(&HostSet, i + 1);
}
}
}
uint64_t Result = ::pselect(nfds,
readfds ? &Host_readfds : nullptr,
writefds ? &Host_writefds : nullptr,
exceptfds ? &Host_exceptfds : nullptr,
timeout,
&HostSet);
if (readfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_readfds)) {
readfds[i/32] |= 1 << (i & 31);
} else {
readfds[i/32] &= ~(1 << (i & 31));
}
}
}
if (writefds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_writefds)) {
writefds[i/32] |= 1 << (i & 31);
} else {
writefds[i/32] &= ~(1 << (i & 31));
}
}
}
if (exceptfds) {
for (int i = 0; i < nfds; ++i) {
if (FD_ISSET(i, &Host_exceptfds)) {
exceptfds[i/32] |= 1 << (i & 31);
} else {
exceptfds[i/32] &= ~(1 << (i & 31));
}
}
}
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(sendfile, [](FEXCore::Core::CpuStateFrame *Frame, int out_fd, int in_fd, compat_off_t *offset, size_t count) -> uint64_t {
off_t Local{};
off_t *Local_p{};
if (offset) {
Local_p = &Local;
Local = *offset;
}
uint64_t Result = ::sendfile(out_fd, in_fd, Local_p, count);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32_PASS_MANUAL(sendfile64, sendfile, [](FEXCore::Core::CpuStateFrame *Frame, int out_fd, int in_fd, off_t *offset, compat_size_t count) -> uint64_t {
// Linux definition for this is a bit confusing
// Defines offset as compat_loff_t* but loads loff_t worth of data
// count is defined as compat_size_t still
uint64_t Result = ::sendfile(out_fd, in_fd, offset, count);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(pread_64, [](FEXCore::Core::CpuStateFrame *Frame, int fd, void *buf, uint32_t count, uint32_t offset_low, uint32_t offset_high) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Result = ::pread64(fd, buf, count, Offset);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(pwrite_64, [](FEXCore::Core::CpuStateFrame *Frame, int fd, void *buf, uint32_t count, uint32_t offset_low, uint32_t offset_high) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Result = ::pwrite64(fd, buf, count, Offset);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(readahead, [](FEXCore::Core::CpuStateFrame *Frame, int fd, uint32_t offset_low, uint64_t offset_high, size_t count) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Result = ::readahead(fd, Offset, count);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(sync_file_range, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
uint32_t offset_low,
uint32_t offset_high,
uint32_t len_low,
uint32_t len_high,
unsigned int flags) -> uint64_t {
// Flags don't need remapped
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Len = len_high;
Len <<= 32;
Len |= len_low;
uint64_t Result = ::syscall(SYSCALL_DEF(sync_file_range), fd, Offset, Len, flags);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(fallocate, [](FEXCore::Core::CpuStateFrame *Frame,
int fd,
int mode,
uint32_t offset_low,
uint32_t offset_high,
uint32_t len_low,
uint32_t len_high) -> uint64_t {
uint64_t Offset = offset_high;
Offset <<= 32;
Offset |= offset_low;
uint64_t Len = len_high;
Len <<= 32;
Len |= len_low;
uint64_t Result = ::fallocate(fd, mode, Offset, Len);
SYSCALL_ERRNO();
});
REGISTER_SYSCALL_IMPL_X32(vmsplice, [](FEXCore::Core::CpuStateFrame *Frame, int fd, const struct iovec32 *iov, unsigned long nr_segs, unsigned int flags) -> uint64_t {
fextl::vector<iovec> Host_iovec(iov, iov + nr_segs);
uint64_t Result = ::vmsplice(fd, Host_iovec.data(), nr_segs, flags);
SYSCALL_ERRNO();
});
}
}
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