+++ /dev/null
-/*
- * AcessOS Microkernel Version
- * syscalls.c
- */
-#define DEBUG 1
-
-#include <common.h>
-#include <syscalls.h>
-#include <proc.h>
-#include <errno.h>
-
-// === IMPORTS ===
-extern int Proc_Clone(Uint *Err, Uint Flags);
-extern int Threads_WaitTID(int TID, int *status);
-extern Uint Proc_SendMessage(Uint *Err, Uint Dest, Uint Length, void *Data);
-extern int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer);
-extern int Proc_Execve(char *File, char **ArgV, char **EnvP);
-extern Uint Binary_Load(char *file, Uint *entryPoint);
-extern int VFS_FInfo(int FD, void *Dest, int MaxACLs);
-extern int Threads_SetName(char *NewName);
-extern int Threads_GetPID();
-extern int Threads_GetTID();
-extern int Threads_GetUID();
-extern int Threads_GetGID();
-
-// === CODE ===
-void SyscallHandler(tSyscallRegs *Regs)
-{
- Uint64 ret = 0;
- Uint err = 0;
- #if DEBUG
- ENTER("iThread iNum", Threads_GetTID(), Regs->Num);
- if(Regs->Num < NUM_SYSCALLS)
- LOG("Syscall %s", cSYSCALL_NAMES[Regs->Num]);
- LOG("Arg1: 0x%x, Arg2: 0x%x, Arg3: 0x%x", Regs->Arg1, Regs->Arg2, Regs->Arg3);
- #endif
- switch(Regs->Num)
- {
- // -- Exit the current thread
- case SYS_EXIT: Threads_Exit(); break;
-
- // -- Put the current thread to sleep
- case SYS_SLEEP: Threads_Sleep(); break;
-
- // -- Yield current timeslice
- case SYS_YIELD: Threads_Yield(); break;
-
- // -- Clone the current thread
- case SYS_CLONE:
- // Call clone system call
- ret = Proc_Clone(&err, Regs->Arg1);
- // Change user stack if requested
- if(ret == 0 && Regs->Arg2)
- Regs->StackPointer = Regs->Arg2;
- break;
-
- // -- Send a signal
- case SYS_KILL:
- err = -ENOSYS;
- ret = -1;
- break;
-
- // -- Wait for a thread
- case SYS_WAITTID:
- ret = Threads_WaitTID(Regs->Arg1, (void*)Regs->Arg2);
- break;
-
- // -- Get the physical address of a page
- case SYS_GETPHYS:
- ret = MM_GetPhysAddr(Regs->Arg1);
- break;
-
- // -- Map an address
- case SYS_MAP: MM_Map(Regs->Arg1, Regs->Arg2); break;
-
- // -- Allocate an address
- case SYS_ALLOCATE: ret = MM_Allocate(Regs->Arg1); break;
-
- // -- Unmap an address
- case SYS_UNMAP: MM_Deallocate(Regs->Arg1); break;
-
- // -- Get Thread/Process IDs
- case SYS_GETTID: ret = Threads_GetTID(); break;
- case SYS_GETPID: ret = Threads_GetPID(); break;
-
- // -- Get User/Group IDs
- case SYS_GETUID: ret = Threads_GetUID(); break;
- case SYS_GETGID: ret = Threads_GetGID(); break;
-
- // -- Send Message
- case SYS_SENDMSG:
- ret = Proc_SendMessage(&err, Regs->Arg1, Regs->Arg2, (void*)Regs->Arg3);
- break;
- // -- Check for messages
- case SYS_GETMSG:
- ret = Proc_GetMessage(&err, (Uint*)Regs->Arg1, (void*)Regs->Arg2);
- break;
-
- // -- Set the thread's name
- case SYS_SETNAME:
- // Sanity Check
- if(!Regs->Arg1) { ret = -1; err = -EINVAL; break; }
- Threads_SetName( (void*)Regs->Arg1 );
- break;
-
- // ---
- // Binary Control
- // ---
- case SYS_EXECVE:
- ret = Proc_Execve((char*)Regs->Arg1, (char**)Regs->Arg2, (char**)Regs->Arg3);
- break;
- case SYS_LOADBIN:
- ret = Binary_Load((char*)Regs->Arg1, (Uint*)Regs->Arg2);
- break;
-
- // ---
- // Virtual Filesystem
- // ---
- case SYS_OPEN:
- ret = VFS_Open((char*)Regs->Arg1, Regs->Arg2 | VFS_OPENFLAG_USER);
- break;
-
- case SYS_CLOSE:
- VFS_Close( Regs->Arg1 );
- break;
-
- case SYS_WRITE:
- #if BITS < 64
- VFS_Write( Regs->Arg1, Regs->Arg2|((Uint64)Regs->Arg3<<32), (void*)Regs->Arg4 );
- #else
- VFS_Write( Regs->Arg1, Regs->Arg2, (void*)Regs->Arg3 );
- #endif
- break;
-
- case SYS_READ:
- #if BITS < 64
- VFS_Read( Regs->Arg1, Regs->Arg2|((Uint64)Regs->Arg3<<32), (void*)Regs->Arg4 );
- #else
- VFS_Read( Regs->Arg1, Regs->Arg2, (void*)Regs->Arg3 );
- #endif
- break;
-
- case SYS_FINFO:
- ret = VFS_FInfo( Regs->Arg1, (void*)Regs->Arg2, Regs->Arg3 );
- break;
-
- case SYS_READDIR:
- ret = VFS_ReadDir( Regs->Arg1, (void*)Regs->Arg2 );
- break;
-
- // -- Debug
- case SYS_DEBUG:
- Log((char*)Regs->Arg1,
- Regs->Arg2, Regs->Arg3, Regs->Arg4, Regs->Arg5, Regs->Arg6);
- break;
-
- // -- Default (Return Error)
- default:
- Warning("SyscallHandler: Unknown System Call %i", Regs->Num);
- if(Regs->Num < NUM_SYSCALLS)
- Warning(" Syscall '%s'", cSYSCALL_NAMES[Regs->Num]);
- err = -ENOSYS;
- ret = -1;
- break;
- }
- #if BITS < 64
- Regs->Return = ret&0xFFFFFFFF;
- Regs->RetHi = ret >> 32;
- #else
- Regs->Return = ret;
- #endif
- Regs->Error = err;
- #if DEBUG
- LOG("SyscallHandler: err = %i", err);
- LEAVE('x', ret);
- #endif
-}
-