mirror of
https://github.com/FEX-Emu/FEX.git
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83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
// SPDX-License-Identifier: MIT
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/*
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$info$
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tags: LinuxSyscalls|syscalls-x86-64
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$end_info$
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*/
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#include "LinuxSyscalls/Syscalls.h"
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#include "LinuxSyscalls/x64/Syscalls.h"
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#include "LinuxSyscalls/x64/Types.h"
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#include <FEXHeaderUtils/Syscalls.h>
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#include <linux/sem.h>
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#include <stddef.h>
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#include <stdint.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::x64::semun, "%lx")
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namespace FEX::HLE::x64 {
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void RegisterSemaphore(FEX::HLE::SyscallHandler* Handler) {
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REGISTER_SYSCALL_IMPL_X64(semctl, [](FEXCore::Core::CpuStateFrame* Frame, int semid, int semnum, int cmd, FEX::HLE::x64::semun semun) -> uint64_t {
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uint64_t Result {};
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switch (cmd) {
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case IPC_SET: {
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struct semid64_ds buf {};
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FaultSafeUserMemAccess::VerifyIsReadable(semun.buf, sizeof(*semun.buf));
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buf = *semun.buf;
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Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, &buf);
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if (Result != -1) {
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FaultSafeUserMemAccess::VerifyIsWritable(semun.buf, sizeof(*semun.buf));
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*semun.buf = buf;
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}
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break;
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}
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case SEM_STAT:
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case SEM_STAT_ANY:
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case IPC_STAT: {
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struct semid64_ds buf {};
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Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, &buf);
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if (Result != -1) {
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FaultSafeUserMemAccess::VerifyIsWritable(semun.buf, sizeof(*semun.buf));
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*semun.buf = buf;
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}
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break;
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}
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case SEM_INFO:
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case IPC_INFO: {
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struct fex_seminfo si {};
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Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, &si);
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if (Result != -1) {
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FaultSafeUserMemAccess::VerifyIsWritable(semun.__buf, sizeof(si));
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memcpy(semun.__buf, &si, sizeof(si));
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}
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break;
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}
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case GETALL:
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case SETALL: {
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// ptr is just a int32_t* in this case
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Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, semun.array);
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break;
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}
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case SETVAL: {
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// ptr is just a int32_t in this case
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Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, semun.val);
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break;
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}
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case IPC_RMID:
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case GETPID:
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case GETNCNT:
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case GETZCNT:
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case GETVAL: Result = ::syscall(SYSCALL_DEF(semctl), semid, semnum, cmd, semun); break;
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default: LOGMAN_MSG_A_FMT("Unhandled semctl cmd: {}", cmd); return -EINVAL;
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}
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SYSCALL_ERRNO();
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});
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}
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} // namespace FEX::HLE::x64
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