| subr_syscall.c (31544) | subr_syscall.c (31564) |
|---|---|
| 1/*- 2 * Copyright (C) 1994, David Greenman 3 * Copyright (c) 1990, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the University of Utah, and William Jolitz. 8 * --- 21 unchanged lines hidden (view full) --- 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)trap.c 7.4 (Berkeley) 5/13/91 | 1/*- 2 * Copyright (C) 1994, David Greenman 3 * Copyright (c) 1990, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the University of Utah, and William Jolitz. 8 * --- 21 unchanged lines hidden (view full) --- 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)trap.c 7.4 (Berkeley) 5/13/91 |
| 38 * $Id: trap.c,v 1.117 1997/12/04 14:35:40 jkh Exp $ | 38 * $Id: trap.c,v 1.118 1997/12/04 21:21:26 jmg Exp $ |
| 39 */ 40 41/* 42 * 386 Trap and System call handling 43 */ 44 45#include "opt_cpu.h" 46#include "opt_ddb.h" 47#include "opt_ktrace.h" 48#include "opt_vm86.h" 49 50#include <sys/param.h> 51#include <sys/systm.h> 52#include <sys/proc.h> | 39 */ 40 41/* 42 * 386 Trap and System call handling 43 */ 44 45#include "opt_cpu.h" 46#include "opt_ddb.h" 47#include "opt_ktrace.h" 48#include "opt_vm86.h" 49 50#include <sys/param.h> 51#include <sys/systm.h> 52#include <sys/proc.h> |
| 53#include <sys/pioctl.h> |
|
| 53#include <sys/kernel.h> 54#include <sys/resourcevar.h> 55#include <sys/signalvar.h> 56#include <sys/syscall.h> 57#include <sys/sysent.h> 58#include <sys/vmmeter.h> 59#ifdef KTRACE 60#include <sys/ktrace.h> --- 921 unchanged lines hidden (view full) --- 982 } 983#ifdef KTRACE 984 if (KTRPOINT(p, KTR_SYSCALL)) 985 ktrsyscall(p->p_tracep, code, callp->sy_narg, args); 986#endif 987 p->p_retval[0] = 0; 988 p->p_retval[1] = frame.tf_edx; 989 | 54#include <sys/kernel.h> 55#include <sys/resourcevar.h> 56#include <sys/signalvar.h> 57#include <sys/syscall.h> 58#include <sys/sysent.h> 59#include <sys/vmmeter.h> 60#ifdef KTRACE 61#include <sys/ktrace.h> --- 921 unchanged lines hidden (view full) --- 983 } 984#ifdef KTRACE 985 if (KTRPOINT(p, KTR_SYSCALL)) 986 ktrsyscall(p->p_tracep, code, callp->sy_narg, args); 987#endif 988 p->p_retval[0] = 0; 989 p->p_retval[1] = frame.tf_edx; 990 |
| 991 STOPEVENT(p, S_SCE, callp->sy_narg); 992 |
|
| 990 error = (*callp->sy_call)(p, args); 991 992 switch (error) { 993 994 case 0: 995 /* 996 * Reinitialize proc pointer `p' as it may be different 997 * if this is a child returning from fork syscall. --- 34 unchanged lines hidden (view full) --- 1032 } 1033 1034 userret(p, &frame, sticks); 1035 1036#ifdef KTRACE 1037 if (KTRPOINT(p, KTR_SYSRET)) 1038 ktrsysret(p->p_tracep, code, error, p->p_retval[0]); 1039#endif | 993 error = (*callp->sy_call)(p, args); 994 995 switch (error) { 996 997 case 0: 998 /* 999 * Reinitialize proc pointer `p' as it may be different 1000 * if this is a child returning from fork syscall. --- 34 unchanged lines hidden (view full) --- 1035 } 1036 1037 userret(p, &frame, sticks); 1038 1039#ifdef KTRACE 1040 if (KTRPOINT(p, KTR_SYSRET)) 1041 ktrsysret(p->p_tracep, code, error, p->p_retval[0]); 1042#endif |
| 1043 1044 /* 1045 * This works because errno is findable through the 1046 * register set. If we ever support an emulation where this 1047 * is not the case, this code will need to be revisited. 1048 */ 1049 STOPEVENT(p, S_SCX, code); 1050 |
|
| 1040} 1041 1042/* 1043 * Simplified back end of syscall(), used when returning from fork() 1044 * directly into user mode. 1045 */ 1046void 1047fork_return(p, frame) --- 13 unchanged lines hidden --- | 1051} 1052 1053/* 1054 * Simplified back end of syscall(), used when returning from fork() 1055 * directly into user mode. 1056 */ 1057void 1058fork_return(p, frame) --- 13 unchanged lines hidden --- |