122 lines
2.9 KiB
C
122 lines
2.9 KiB
C
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/*
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* System-dependent scheduler support
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*
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* Copyright 1998 Alexandre Julliard
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "thread.h"
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#ifdef __linux__
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# ifdef HAVE_SCHED_H
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# include <sched.h>
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# endif
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# ifndef CLONE_VM
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# define CLONE_VM 0x00000100
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# define CLONE_FS 0x00000200
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# define CLONE_FILES 0x00000400
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# define CLONE_SIGHAND 0x00000800
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# define CLONE_PID 0x00001000
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/* If we didn't get the flags, we probably didn't get the prototype either */
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extern int clone( int (*fn)(void *arg), void *stack, int flags, void *arg );
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# endif /* CLONE_VM */
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#endif /* __linux__ */
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#ifdef __linux__
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/***********************************************************************
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* __errno_location
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*
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* Get the per-thread errno location.
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*/
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int *__errno_location()
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{
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static int static_errno;
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THDB *thdb = THREAD_Current();
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if (!thdb) return &static_errno;
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return &thdb->thread_errno;
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}
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/***********************************************************************
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* __h_errno_location
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*
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* Get the per-thread h_errno location.
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*/
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int *__h_errno_location()
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{
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static int static_h_errno;
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THDB *thdb = THREAD_Current();
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if (!thdb) return &static_h_errno;
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return &thdb->thread_h_errno;
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}
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/***********************************************************************
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* SYSDEPS_StartThread
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*
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* Startup routine for a new thread.
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*/
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static void SYSDEPS_StartThread( THDB *thdb )
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{
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LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)thdb->entry_point;
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thdb->unix_pid = getpid();
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SET_FS( thdb->teb_sel );
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ExitThread( func( thdb->entry_arg ) );
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}
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#endif /* __linux__ */
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/***********************************************************************
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* SYSDEPS_SpawnThread
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*
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* Start running a new thread.
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* Return -1 on error, 0 if OK.
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*/
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int SYSDEPS_SpawnThread( THDB *thread )
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{
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#ifdef __linux__
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if (clone( (int (*)(void *))SYSDEPS_StartThread, thread->teb.stack_top,
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CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, thread ) < 0)
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return -1;
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#else
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fprintf( stderr, "CreateThread: stub\n" );
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#endif /* __linux__ */
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return 0;
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}
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/***********************************************************************
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* SYSDEPS_ExitThread
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*
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* Exit a running thread; must not return.
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*/
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void SYSDEPS_ExitThread(void)
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{
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_exit( 0 );
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}
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/**********************************************************************
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* NtCurrentTeb (NTDLL.89)
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*/
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TEB * WINAPI NtCurrentTeb(void)
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{
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#ifdef __i386__
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TEB *teb;
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WORD ds, fs;
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/* Check if we have a current thread */
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GET_DS( ds );
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GET_FS( fs );
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if (fs == ds) return NULL; /* FIXME: should be an assert */
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/* Get the TEB self-pointer */
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__asm__( ".byte 0x64\n\tmovl (%1),%0"
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: "=r" (teb) : "r" (&((TEB *)0)->self) );
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return teb;
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#else
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if (!pCurrentThread) return NULL;
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return &pCurrentThread->teb;
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#endif /* __i386__ */
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}
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