472 lines
26 KiB
C++
472 lines
26 KiB
C++
/*
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* Syscall.cpp
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* SYSCALL/SYSRET setup and number-based dispatch
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* Copyright (c) 2025 Daniel Hammer
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*/
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#include "Syscall.hpp"
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#include <Terminal/Terminal.hpp>
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#include <Hal/MSR.hpp>
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#include <Hal/GDT.hpp>
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/* For common functions used by multiple syscall implementations*/
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#include "Common.hpp"
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/* Syscall impl. includes */
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#include "Process.hpp" // SYS_EXIT, SYS_YIELD, SYS_SLEEP_MS, SYS_GETPID, SYS_WAITPID, SYS_SPAWN, SYS_GETARGS, SYS_PROCLIST, SYS_KILL
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#include "Terminal.hpp" // SYS_PRINT, SYS_PUTCHAR
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#include "Filesystem.hpp" // SYS_OPEN, SYS_READ, SYS_GETSIZE, SYS_CLOSE, SYS_READDIR, SYS_FWRITE, SYS_FCREATE
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#include "Heap.hpp" // SYS_ALLOC, SYS_FREE
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#include "Time.hpp" // SYS_GETTICKS, SYS_GETMILLISECONDS, SYS_GETTIME
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#include "Keyboard.hpp" // SYS_ISKEYAVAILABLE, SYS_GETKEY, SYS_GETCHAR
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#include "Info.hpp" // SYS_GETINFO
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#include "Graphics.hpp" // SYS_FBINFO, SYS_FBMAP, SYS_TERMSIZE, SYS_TERMSCALE
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#include "Net.hpp" // SYS_PING, SYS_SOCKET, SYS_CONNECT, SYS_BIND, SYS_LISTEN, SYS_ACCEPT, SYS_SEND, SYS_RECV, SYS_CLOSESOCK, SYS_SENDTO, SYS_RECVFROM, SYS_GETNETCFG, SYS_SETNETCFG, SYS_RESOLVE
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#include "Power.hpp" // SYS_RESET, SYS_SHUTDOWN, SYS_SUSPEND
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#include "Mouse.hpp" // SYS_MOUSESTATE, SYS_SETMOUSEBOUNDS
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#include "IoRedir.hpp" // SYS_SPAWN_REDIR, SYS_CHILDIO_READ, SYS_CHILDIO_WRITE, SYS_CHILDIO_WRITEKEY, SYS_CHILDIO_SETTERMSZ
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#include "Random.hpp" // SYS_GETRANDOM
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#include "MemInfo.hpp" // SYS_MEMSTATS
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#include "Device.hpp" // SYS_DEVLIST, SYS_DISKINFO
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#include "Storage.hpp" // SYS_PARTLIST, SYS_DISKREAD, SYS_DISKWRITE
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#include "Window.hpp" // SYS_WINCREATE, SYS_WINDESTROY, SYS_WINPRESENT, SYS_WINPOLL, SYS_WINENUM, SYS_WINMAP, SYS_WINSENDEVENT, SYS_WINRESIZE, SYS_WINSETSCALE, SYS_WINGETSCALE
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#include "Audio.hpp" // SYS_AUDIOOPEN, SYS_AUDIOCLOSE, SYS_AUDIOWRITE, SYS_AUDIOCTL
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#include "BluetoothSyscall.hpp" // SYS_BTSCAN, SYS_BTCONNECT, SYS_BTDISCONNECT, SYS_BTLIST, SYS_BTINFO
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#include "IpcSyscall.hpp" // SYS_DUPHANDLE, SYS_WAIT_HANDLE, SYS_STREAM_CREATE, SYS_STREAM_READ, SYS_STREAM_WRITE, SYS_MAILBOX_CREATE, SYS_MAILBOX_SEND, SYS_MAILBOX_RECV, SYS_WAITSET_CREATE, SYS_WAITSET_ADD, SYS_WAITSET_REMOVE, SYS_WAITSET_WAIT, SYS_PROC_OPEN, SYS_SURFACE_CREATE, SYS_SURFACE_MAP, SYS_SURFACE_RESIZE
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#include "LibSyscall.hpp" // SYS_LOAD_LIB, SYS_UNLOAD_LIB, SYS_DLSYM
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#include "CrashReportSyscall.hpp" // SYS_CRASH_REPORT
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#include "Clipboard.hpp" // SYS_CLIPBOARD_*
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#include "UserMemory.hpp"
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// Assembly entry point
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extern "C" void SyscallEntry();
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namespace Montauk {
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static constexpr uint64_t kMaxPrintableStringBytes = 4096;
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static constexpr uint64_t kMaxPathBytes = 256;
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static constexpr uint64_t kMaxArgsBytes = 256;
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static constexpr uint64_t kMaxWindowTitleBytes = 256;
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static constexpr uint64_t kMaxHostnameBytes = 256;
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static constexpr uint64_t kMaxUserNameBytes = 32;
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// ---- Dispatch ----
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extern "C" int64_t SyscallDispatch(SyscallFrame* frame) {
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switch (frame->syscall_nr) {
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case SYS_EXIT: {
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Sys_Exit((int)frame->arg1);
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return 0;
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}
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case SYS_YIELD:
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Sys_Yield();
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return 0;
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case SYS_SLEEP_MS:
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Sys_SleepMs(frame->arg1);
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return 0;
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case SYS_GETPID:
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return (int64_t)Sys_GetPid();
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case SYS_PRINT:
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if (!UserMemory::String(frame->arg1, kMaxPrintableStringBytes)) return -1;
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Sys_Print((const char*)frame->arg1);
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return 0;
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case SYS_PUTCHAR:
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Sys_Putchar((char)frame->arg1);
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return 0;
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case SYS_OPEN:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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return (int64_t)Sys_Open((const char*)frame->arg1);
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case SYS_READ:
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if (!UserMemory::Range(frame->arg2, frame->arg4, true)) return -1;
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return (int64_t)Sys_Read((int)frame->arg1, (uint8_t*)frame->arg2,
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frame->arg3, frame->arg4);
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case SYS_GETSIZE:
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return (int64_t)Sys_GetSize((int)frame->arg1);
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case SYS_CLOSE:
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Sys_Close((int)frame->arg1);
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return 0;
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case SYS_READDIR:
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if ((int64_t)frame->arg3 < 0) return -1;
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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if (!UserMemory::Range(frame->arg2,
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(uint64_t)((frame->arg3 > 256) ? 256 : frame->arg3) * sizeof(const char*),
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true)) {
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return -1;
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}
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return (int64_t)Sys_ReadDir((const char*)frame->arg1,
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(const char**)frame->arg2,
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(int)frame->arg3);
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case SYS_ALLOC:
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return (int64_t)Sys_Alloc(frame->arg1);
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case SYS_FREE:
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Sys_Free(frame->arg1);
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return 0;
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case SYS_GETTICKS:
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return (int64_t)Sys_GetTicks();
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case SYS_GETMILLISECONDS:
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return (int64_t)Sys_GetMilliseconds();
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case SYS_GETINFO:
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if (!UserMemory::Writable<SysInfo>(frame->arg1)) return -1;
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Sys_GetInfo((SysInfo*)frame->arg1);
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return 0;
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case SYS_ISKEYAVAILABLE:
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return (int64_t)Sys_IsKeyAvailable();
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case SYS_GETKEY:
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if (!UserMemory::Writable<KeyEvent>(frame->arg1)) return -1;
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Sys_GetKey((KeyEvent*)frame->arg1);
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return 0;
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case SYS_GETCHAR:
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return (int64_t)Sys_GetChar();
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case SYS_PING:
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return (int64_t)Sys_Ping((uint32_t)frame->arg1, (uint32_t)frame->arg2);
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case SYS_SPAWN:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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if (frame->arg2 != 0 && !UserMemory::String(frame->arg2, kMaxArgsBytes)) return -1;
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return (int64_t)Sys_Spawn((const char*)frame->arg1,
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UserMemory::IsUserPtr(frame->arg2) ? (const char*)frame->arg2 : nullptr);
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case SYS_WAITPID:
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Sys_WaitPid((int)frame->arg1);
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return 0;
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case SYS_FBINFO:
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if (!UserMemory::Writable<FbInfo>(frame->arg1)) return -1;
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Sys_FbInfo((FbInfo*)frame->arg1);
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return 0;
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case SYS_FBMAP:
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return (int64_t)Sys_FbMap();
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case SYS_TERMSIZE:
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return (int64_t)Sys_TermSize();
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case SYS_GETARGS:
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if (!UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
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return (int64_t)Sys_GetArgs((char*)frame->arg1, frame->arg2);
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case SYS_RESET:
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Sys_Reset();
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return 0;
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case SYS_SHUTDOWN:
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Sys_Shutdown();
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return 0;
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case SYS_GETTIME:
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if (!UserMemory::Writable<DateTime>(frame->arg1)) return -1;
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Sys_GetTime((DateTime*)frame->arg1);
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return 0;
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case SYS_SOCKET:
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return (int64_t)Sys_Socket((int)frame->arg1);
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case SYS_CONNECT:
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return (int64_t)Sys_Connect((int)frame->arg1, (uint32_t)frame->arg2, (uint16_t)frame->arg3);
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case SYS_BIND:
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return (int64_t)Sys_Bind((int)frame->arg1, (uint16_t)frame->arg2);
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case SYS_LISTEN:
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return (int64_t)Sys_Listen((int)frame->arg1);
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case SYS_ACCEPT:
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return (int64_t)Sys_Accept((int)frame->arg1);
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case SYS_SEND:
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if (!UserMemory::Range(frame->arg2, frame->arg3, false)) return -1;
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return (int64_t)Sys_Send((int)frame->arg1, (const uint8_t*)frame->arg2, (uint32_t)frame->arg3);
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case SYS_RECV:
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if (!UserMemory::Range(frame->arg2, frame->arg3, true)) return -1;
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return (int64_t)Sys_Recv((int)frame->arg1, (uint8_t*)frame->arg2, (uint32_t)frame->arg3);
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case SYS_CLOSESOCK:
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Sys_CloseSock((int)frame->arg1);
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return 0;
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case SYS_GETNETCFG:
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if (!UserMemory::Writable<NetCfg>(frame->arg1)) return -1;
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Sys_GetNetCfg((NetCfg*)frame->arg1);
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return 0;
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case SYS_SETNETCFG:
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if (!UserMemory::Readable<NetCfg>(frame->arg1)) return -1;
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return (int64_t)Sys_SetNetCfg((const NetCfg*)frame->arg1);
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case SYS_SENDTO:
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if (!UserMemory::Range(frame->arg2, frame->arg3, false)) return -1;
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return (int64_t)Sys_SendTo((int)frame->arg1, (const uint8_t*)frame->arg2,
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(uint32_t)frame->arg3, (uint32_t)frame->arg4,
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(uint16_t)frame->arg5);
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case SYS_RECVFROM:
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if (!UserMemory::Range(frame->arg2, frame->arg3, true)) return -1;
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if (!UserMemory::OptionalRange(frame->arg4, sizeof(uint32_t), true)) return -1;
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if (!UserMemory::OptionalRange(frame->arg5, sizeof(uint16_t), true)) return -1;
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return (int64_t)Sys_RecvFrom((int)frame->arg1, (uint8_t*)frame->arg2,
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(uint32_t)frame->arg3,
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UserMemory::IsUserPtr(frame->arg4) ? (uint32_t*)frame->arg4 : nullptr,
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UserMemory::IsUserPtr(frame->arg5) ? (uint16_t*)frame->arg5 : nullptr);
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case SYS_FWRITE:
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if (!UserMemory::Range(frame->arg2, frame->arg4, false)) return -1;
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return (int64_t)Sys_FWrite((int)frame->arg1, (const uint8_t*)frame->arg2,
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frame->arg3, frame->arg4);
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case SYS_FCREATE:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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return (int64_t)Sys_FCreate((const char*)frame->arg1);
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case SYS_FDELETE:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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return (int64_t)Sys_FDelete((const char*)frame->arg1);
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case SYS_FMKDIR:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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return (int64_t)Sys_FMkdir((const char*)frame->arg1);
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case SYS_FRENAME:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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if (!UserMemory::String(frame->arg2, kMaxPathBytes)) return -1;
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return (int64_t)Sys_FRename((const char*)frame->arg1, (const char*)frame->arg2);
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case SYS_DRIVELIST:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(int), true)) return -1;
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return (int64_t)Sys_DriveList((int*)frame->arg1, (int)frame->arg2);
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case SYS_TERMSCALE:
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return Sys_TermScale(frame->arg1, frame->arg2);
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case SYS_RESOLVE:
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if (!UserMemory::String(frame->arg1, kMaxHostnameBytes)) return -1;
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return Sys_Resolve((const char*)frame->arg1);
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case SYS_GETRANDOM:
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if (!UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
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return Sys_GetRandom((uint8_t*)frame->arg1, frame->arg2);
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case SYS_KLOG:
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if (!UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
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return Kt::ReadKernelLog((char*)frame->arg1, frame->arg2);
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case SYS_MOUSESTATE:
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if (!UserMemory::Writable<MouseState>(frame->arg1)) return -1;
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Sys_MouseState((MouseState*)frame->arg1);
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return 0;
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case SYS_SETMOUSEBOUNDS:
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Sys_SetMouseBounds((int32_t)frame->arg1, (int32_t)frame->arg2);
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return 0;
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case SYS_SPAWN_REDIR:
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if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
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if (frame->arg2 != 0 && !UserMemory::String(frame->arg2, kMaxArgsBytes)) return -1;
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return (int64_t)Sys_SpawnRedir((const char*)frame->arg1,
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UserMemory::IsUserPtr(frame->arg2) ? (const char*)frame->arg2 : nullptr);
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case SYS_CHILDIO_READ:
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if ((int64_t)frame->arg3 < 0) return -1;
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if (!UserMemory::Range(frame->arg2, (uint64_t)frame->arg3, true)) return -1;
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return (int64_t)Sys_ChildIoRead((int)frame->arg1, (char*)frame->arg2, (int)frame->arg3);
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case SYS_CHILDIO_WRITE:
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if ((int64_t)frame->arg3 < 0) return -1;
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if (!UserMemory::Range(frame->arg2, (uint64_t)frame->arg3, false)) return -1;
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return (int64_t)Sys_ChildIoWrite((int)frame->arg1, (const char*)frame->arg2, (int)frame->arg3);
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case SYS_CHILDIO_WRITEKEY:
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if (!UserMemory::Readable<KeyEvent>(frame->arg2)) return -1;
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return (int64_t)Sys_ChildIoWriteKey((int)frame->arg1, (const KeyEvent*)frame->arg2);
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case SYS_CHILDIO_SETTERMSZ:
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return (int64_t)Sys_ChildIoSetTermsz((int)frame->arg1, (int)frame->arg2, (int)frame->arg3);
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case SYS_WINCREATE:
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if (!UserMemory::String(frame->arg1, kMaxWindowTitleBytes)) return -1;
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if (!UserMemory::Writable<WinCreateResult>(frame->arg4)) return -1;
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return (int64_t)Sys_WinCreate((const char*)frame->arg1, (int)frame->arg2,
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(int)frame->arg3, (WinCreateResult*)frame->arg4);
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case SYS_WINDESTROY:
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return (int64_t)Sys_WinDestroy((int)frame->arg1);
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case SYS_WINPRESENT:
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return (int64_t)Sys_WinPresent((int)frame->arg1);
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case SYS_WINPOLL:
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if (!UserMemory::Writable<WinEvent>(frame->arg2)) return -1;
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return (int64_t)Sys_WinPoll((int)frame->arg1, (WinEvent*)frame->arg2);
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case SYS_WINENUM:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(WinInfo), true)) return -1;
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return (int64_t)Sys_WinEnum((WinInfo*)frame->arg1, (int)frame->arg2);
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case SYS_WINMAP:
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return (int64_t)Sys_WinMap((int)frame->arg1);
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case SYS_WINUNMAP:
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return (int64_t)Sys_WinUnmap((int)frame->arg1);
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case SYS_WINSENDEVENT:
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if (!UserMemory::Readable<WinEvent>(frame->arg2)) return -1;
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return (int64_t)Sys_WinSendEvent((int)frame->arg1, (const WinEvent*)frame->arg2);
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case SYS_WINRESIZE:
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return (int64_t)Sys_WinResize((int)frame->arg1, (int)frame->arg2, (int)frame->arg3);
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case SYS_PROCLIST:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(ProcInfo), true)) return -1;
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return (int64_t)Sys_ProcList((ProcInfo*)frame->arg1, (int)frame->arg2);
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case SYS_KILL:
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return (int64_t)Sys_Kill((int)frame->arg1);
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case SYS_DEVLIST:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(DevInfo), true)) return -1;
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return (int64_t)Sys_DevList((DevInfo*)frame->arg1, (int)frame->arg2);
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case SYS_DISKINFO:
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if (!UserMemory::Writable<DiskInfo>(frame->arg1)) return -1;
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return (int64_t)Sys_DiskInfo((DiskInfo*)frame->arg1, (int)frame->arg2);
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case SYS_WINSETSCALE:
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return (int64_t)Sys_WinSetScale((int)frame->arg1);
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case SYS_WINGETSCALE:
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return (int64_t)Sys_WinGetScale();
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case SYS_WINSETCURSOR:
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return (int64_t)Sys_WinSetCursor((int)frame->arg1, (int)frame->arg2);
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case SYS_MEMSTATS:
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if (!UserMemory::Writable<MemStats>(frame->arg1)) return -1;
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Sys_MemStats((MemStats*)frame->arg1);
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return 0;
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case SYS_PARTLIST:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(PartInfo), true)) return -1;
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return (int64_t)Sys_PartList((PartInfo*)frame->arg1, (int)frame->arg2);
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case SYS_DISKREAD:
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return (int64_t)Sys_DiskRead((int)frame->arg1, frame->arg2,
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(uint32_t)frame->arg3, (void*)frame->arg4);
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case SYS_DISKWRITE:
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return (int64_t)Sys_DiskWrite((int)frame->arg1, frame->arg2,
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(uint32_t)frame->arg3, (const void*)frame->arg4);
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case SYS_GPTINIT:
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return (int64_t)Sys_GptInit((int)frame->arg1);
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case SYS_GPTADD:
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if (!UserMemory::Readable<GptAddParams>(frame->arg1)) return -1;
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return (int64_t)Sys_GptAdd((const GptAddParams*)frame->arg1);
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case SYS_FSMOUNT:
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return (int64_t)Sys_FsMount((int)frame->arg1, (int)frame->arg2);
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case SYS_FSFORMAT:
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if (!UserMemory::Readable<FsFormatParams>(frame->arg1)) return -1;
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return (int64_t)Sys_FsFormat((const FsFormatParams*)frame->arg1);
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case SYS_AUDIOOPEN:
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return Sys_AudioOpen((uint32_t)frame->arg1, (uint8_t)frame->arg2, (uint8_t)frame->arg3);
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case SYS_AUDIOCLOSE:
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return Sys_AudioClose((int)frame->arg1);
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case SYS_AUDIOWRITE:
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if (!UserMemory::Range(frame->arg2, frame->arg3, false)) return -1;
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return Sys_AudioWrite((int)frame->arg1, (const uint8_t*)frame->arg2, (uint32_t)frame->arg3);
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case SYS_AUDIOCTL:
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return Sys_AudioCtl((int)frame->arg1, (int)frame->arg2, (int)frame->arg3);
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case SYS_BTSCAN:
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if ((int64_t)frame->arg2 < 0) return -1;
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if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(BtScanResult), true)) return -1;
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return Sys_BtScan((BtScanResult*)frame->arg1, (int)frame->arg2, (uint32_t)frame->arg3);
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case SYS_BTCONNECT:
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if (!UserMemory::Range(frame->arg1, 6, false)) return -1;
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return Sys_BtConnect((const uint8_t*)frame->arg1);
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case SYS_BTDISCONNECT:
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if (!UserMemory::Range(frame->arg1, 6, false)) return -1;
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return Sys_BtDisconnect((const uint8_t*)frame->arg1);
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case SYS_BTLIST:
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if ((int64_t)frame->arg2 < 0) return -1;
|
|
if (!UserMemory::Range(frame->arg1, (uint64_t)frame->arg2 * sizeof(BtDevInfo), true)) return -1;
|
|
return Sys_BtList((BtDevInfo*)frame->arg1, (int)frame->arg2);
|
|
case SYS_BTINFO:
|
|
if (!UserMemory::Writable<BtAdapterInfo>(frame->arg1)) return -1;
|
|
return Sys_BtInfo((BtAdapterInfo*)frame->arg1);
|
|
case SYS_SUSPEND:
|
|
return Sys_Suspend();
|
|
case SYS_SETTZ:
|
|
return Sys_SetTZ((int32_t)frame->arg1);
|
|
case SYS_GETTZ:
|
|
return Sys_GetTZ();
|
|
case SYS_SETUSER:
|
|
if (!UserMemory::String(frame->arg2, kMaxUserNameBytes)) return -1;
|
|
return Sys_SetUser((int)frame->arg1, (const char*)frame->arg2);
|
|
case SYS_GETUSER:
|
|
if (!UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
|
|
return Sys_GetUser((char*)frame->arg1, frame->arg2);
|
|
case SYS_GETCWD:
|
|
if (!UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
|
|
return Sys_GetCwd((char*)frame->arg1, frame->arg2);
|
|
case SYS_CHDIR:
|
|
if (!UserMemory::String(frame->arg1, kMaxPathBytes)) return -1;
|
|
return Sys_Chdir((const char*)frame->arg1);
|
|
case SYS_DUPHANDLE:
|
|
return Sys_DupHandle((int)frame->arg1);
|
|
case SYS_WAIT_HANDLE:
|
|
return (int64_t)Sys_WaitHandle((int)frame->arg1, (uint32_t)frame->arg2, frame->arg3);
|
|
case SYS_STREAM_CREATE:
|
|
if (!UserMemory::Writable<int>(frame->arg1) || !UserMemory::Writable<int>(frame->arg2)) return -1;
|
|
return Sys_StreamCreate((int*)frame->arg1, (int*)frame->arg2, (uint32_t)frame->arg3);
|
|
case SYS_STREAM_READ:
|
|
if ((int64_t)frame->arg3 < 0) return -1;
|
|
if (!UserMemory::Range(frame->arg2, (uint64_t)frame->arg3, true)) return -1;
|
|
return Sys_StreamRead((int)frame->arg1, (uint8_t*)frame->arg2, (int)frame->arg3);
|
|
case SYS_STREAM_WRITE:
|
|
if ((int64_t)frame->arg3 < 0) return -1;
|
|
if (!UserMemory::Range(frame->arg2, (uint64_t)frame->arg3, false)) return -1;
|
|
return Sys_StreamWrite((int)frame->arg1, (const uint8_t*)frame->arg2, (int)frame->arg3);
|
|
case SYS_MAILBOX_CREATE:
|
|
if (!UserMemory::Writable<int>(frame->arg1) || !UserMemory::Writable<int>(frame->arg2)) return -1;
|
|
return Sys_MailboxCreate((int*)frame->arg1, (int*)frame->arg2);
|
|
case SYS_MAILBOX_SEND:
|
|
if (frame->arg4 > 0 && !UserMemory::Range(frame->arg3, frame->arg4, false)) return -1;
|
|
return Sys_MailboxSend((int)frame->arg1, (uint32_t)frame->arg2,
|
|
(const void*)frame->arg3, (uint16_t)frame->arg4,
|
|
(int)frame->arg5);
|
|
case SYS_MAILBOX_RECV:
|
|
if (!UserMemory::Writable<uint16_t>(frame->arg4)) return -1;
|
|
if (frame->arg2 != 0 && !UserMemory::Writable<uint32_t>(frame->arg2)) return -1;
|
|
if (frame->arg3 != 0) {
|
|
uint16_t maxCopy = *(uint16_t*)frame->arg4;
|
|
if (!UserMemory::Range(frame->arg3, maxCopy, true)) return -1;
|
|
}
|
|
if (frame->arg5 != 0 && !UserMemory::Writable<int>(frame->arg5)) return -1;
|
|
return Sys_MailboxRecv((int)frame->arg1,
|
|
UserMemory::IsUserPtr(frame->arg2) ? (uint32_t*)frame->arg2 : nullptr,
|
|
UserMemory::IsUserPtr(frame->arg3) ? (void*)frame->arg3 : nullptr,
|
|
(uint16_t*)frame->arg4,
|
|
UserMemory::IsUserPtr(frame->arg5) ? (int*)frame->arg5 : nullptr);
|
|
case SYS_WAITSET_CREATE:
|
|
return Sys_WaitsetCreate();
|
|
case SYS_WAITSET_ADD:
|
|
return Sys_WaitsetAdd((int)frame->arg1, (int)frame->arg2, (uint32_t)frame->arg3);
|
|
case SYS_WAITSET_REMOVE:
|
|
return Sys_WaitsetRemove((int)frame->arg1, (int)frame->arg2);
|
|
case SYS_WAITSET_WAIT:
|
|
if (frame->arg2 != 0 && !UserMemory::Writable<IpcWaitResult>(frame->arg2)) return -1;
|
|
return Sys_WaitsetWait((int)frame->arg1,
|
|
UserMemory::IsUserPtr(frame->arg2) ? (IpcWaitResult*)frame->arg2 : nullptr,
|
|
frame->arg3);
|
|
case SYS_PROC_OPEN:
|
|
return Sys_ProcOpen((int)frame->arg1);
|
|
case SYS_SURFACE_CREATE:
|
|
return Sys_SurfaceCreate(frame->arg1);
|
|
case SYS_SURFACE_MAP:
|
|
return (int64_t)Sys_SurfaceMap((int)frame->arg1);
|
|
case SYS_SURFACE_RESIZE:
|
|
return Sys_SurfaceResize((int)frame->arg1, frame->arg2);
|
|
case SYS_LOAD_LIB:
|
|
if (!UserMemory::String(frame->arg1, 128)) return 0;
|
|
return (int64_t)Sys_LoadLib((const char*)frame->arg1);
|
|
case SYS_UNLOAD_LIB:
|
|
return Sys_UnloadLib(frame->arg1);
|
|
case SYS_DLSYM:
|
|
return (int64_t)Sys_DLSym(frame->arg1, frame->arg2);
|
|
case SYS_GETLIBBASE:
|
|
return (int64_t)Sys_GetLibBase(frame->arg1);
|
|
case SYS_CRASH_REPORT:
|
|
if (!UserMemory::Writable<CrashReportInfo>(frame->arg1)) return -1;
|
|
return Sys_CrashReport((CrashReportInfo*)frame->arg1);
|
|
case SYS_CLIPBOARD_SET_TEXT:
|
|
if (frame->arg2 > 0 && !UserMemory::Range(frame->arg1, frame->arg2, false)) return -1;
|
|
return Sys_ClipboardSetText((const char*)frame->arg1, (uint32_t)frame->arg2);
|
|
case SYS_CLIPBOARD_GET_INFO:
|
|
if (!UserMemory::Writable<ClipboardInfo>(frame->arg1)) return -1;
|
|
return Sys_ClipboardGetInfo((ClipboardInfo*)frame->arg1);
|
|
case SYS_CLIPBOARD_GET_TEXT:
|
|
if (frame->arg2 > 0 && !UserMemory::Range(frame->arg1, frame->arg2, true)) return -1;
|
|
if (!UserMemory::Writable<uint32_t>(frame->arg3)) return -1;
|
|
if (frame->arg4 != 0 && !UserMemory::Writable<uint64_t>(frame->arg4)) return -1;
|
|
return Sys_ClipboardGetText(UserMemory::IsUserPtr(frame->arg1) ? (char*)frame->arg1 : nullptr,
|
|
(uint32_t)frame->arg2,
|
|
(uint32_t*)frame->arg3,
|
|
UserMemory::IsUserPtr(frame->arg4) ? (uint64_t*)frame->arg4 : nullptr);
|
|
case SYS_CLIPBOARD_CLEAR:
|
|
return Sys_ClipboardClear();
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// ---- SYSCALL MSR initialization ----
|
|
|
|
void InitializeSyscalls() {
|
|
// Enable SYSCALL/SYSRET in EFER
|
|
uint64_t efer = Hal::ReadMSR(Hal::IA32_EFER);
|
|
efer |= 1; // SCE bit (Syscall Enable)
|
|
Hal::WriteMSR(Hal::IA32_EFER, efer);
|
|
|
|
// STAR: kernel CS in [47:32], sysret base in [63:48]
|
|
// SYSCALL: CS=0x08, SS=0x10
|
|
// SYSRET: CS=0x10+16=0x20|RPL3=0x23, SS=0x10+8=0x18|RPL3=0x1B
|
|
uint64_t star = (0x0010ULL << 48) | (0x0008ULL << 32);
|
|
Hal::WriteMSR(Hal::IA32_STAR, star);
|
|
|
|
// LSTAR: SYSCALL entry point
|
|
Hal::WriteMSR(Hal::IA32_LSTAR, (uint64_t)SyscallEntry);
|
|
|
|
// FMASK: mask IF on SYSCALL entry (bit 9 = IF)
|
|
Hal::WriteMSR(Hal::IA32_FMASK, 0x200);
|
|
|
|
Kt::KernelLogStream(Kt::OK, "Syscall") << "SYSCALL/SYSRET initialized (LSTAR="
|
|
<< kcp::hex << (uint64_t)SyscallEntry << kcp::dec << ", 64 syscalls)";
|
|
}
|
|
|
|
}
|