mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-06 19:00:17 +02:00
Ryan Houdek
37983006f0
Sadly these things can't be split without breaking functionality so it turns in to a bit of a mess. SyscallHandler is very much something that is a Linux only construct and shouldn't be in FEXCore itself. Lets the frontend register a Syscallhandler with FEXCore. FEXCore itself is then aware of the current syscall ABI and handles the ABI in an optimal fashion. So it is not a 100% clean break otherwise we would lose performance. The SignalDelegator then needs to move to the frontend since the SyscallHandler requires it for signal based syscalls. The CPU backend signal handling still needs to happen in FEXCore because it is a very tight coupling with the CPU backend. Once we need to support more Signal handling we can give the backends cleaner support to select which specific OS handler to handle.
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
#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 <cstring>
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#include <linux/kcmp.h>
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#include <linux/seccomp.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <syslog.h>
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#include <sys/capability.h>
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#include <sys/random.h>
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#include <sys/resource.h>
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#include <sys/syscall.h>
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#include <sys/utsname.h>
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#include <sys/klog.h>
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#include <unistd.h>
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namespace FEX::HLE {
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void RegisterInfo() {
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REGISTER_SYSCALL_IMPL(getrlimit, [](FEXCore::Core::InternalThreadState *Thread, int resource, struct rlimit *rlim) -> uint64_t {
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uint64_t Result = ::getrlimit(resource, rlim);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(setrlimit, [](FEXCore::Core::InternalThreadState *Thread, int resource, const struct rlimit *rlim) -> uint64_t {
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uint64_t Result = ::setrlimit(resource, rlim);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(getrusage, [](FEXCore::Core::InternalThreadState *Thread, int who, struct rusage *usage) -> uint64_t {
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uint64_t Result = ::getrusage(who, usage);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(syslog, [](FEXCore::Core::InternalThreadState *Thread, int type, char *bufp, int len) -> uint64_t {
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uint64_t Result = ::klogctl(type, bufp, len);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(getrandom, [](FEXCore::Core::InternalThreadState *Thread, void *buf, size_t buflen, unsigned int flags) -> uint64_t {
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uint64_t Result = ::getrandom(buf, buflen, flags);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(capget, [](FEXCore::Core::InternalThreadState *Thread, cap_user_header_t hdrp, cap_user_data_t datap) -> uint64_t {
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uint64_t Result = ::capget(hdrp, datap);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(capset, [](FEXCore::Core::InternalThreadState *Thread, cap_user_header_t hdrp, const cap_user_data_t datap) -> uint64_t {
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uint64_t Result = ::capset(hdrp, datap);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(getcpu, [](FEXCore::Core::InternalThreadState *Thread, unsigned *cpu, unsigned *node, struct getcpu_cache *tcache) -> uint64_t {
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uint32_t LocalCPU{};
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uint32_t LocalNode{};
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// tcache is ignored
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uint64_t Result = ::syscall(SYS_getcpu, cpu ? &LocalCPU : nullptr, node ? &LocalNode : nullptr, nullptr);
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if (Result == 0) {
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if (cpu) {
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// Ensure we don't return a number over our number of emulated cores
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*cpu = LocalCPU % FEX::HLE::_SyscallHandler->ThreadsConfig();
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}
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if (node) {
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// Just claim we are part of node zero
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*node = 0;
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}
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}
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SYSCALL_ERRNO();
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});
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//compare two processes to determine if they share a kernel resource
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REGISTER_SYSCALL_IMPL(kcmp, [](FEXCore::Core::InternalThreadState *Thread, pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) -> uint64_t {
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uint64_t Result = ::syscall(SYS_kcmp, pid1, pid2, type, idx1, idx2);
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SYSCALL_ERRNO();
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});
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REGISTER_SYSCALL_IMPL(seccomp, [](FEXCore::Core::InternalThreadState *Thread, unsigned int operation, unsigned int flags, void *args) -> uint64_t {
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uint64_t Result = ::syscall(SYS_seccomp, operation, flags, args);
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SYSCALL_ERRNO();
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});
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}
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}
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