/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
*
* @APPLE_LICENSE_HEADER_END@
*/
+
+#include <kern/task.h>
+#include <kern/thread.h>
+#include <kern/thread_act.h>
+#include <kern/assert.h>
+#include <mach/machine/thread_status.h>
+#include <ppc/savearea.h>
+
+#include <sys/kernel.h>
+#include <sys/vm.h>
+#include <sys/proc.h>
+#include <sys/syscall.h>
+#include <sys/systm.h>
+#include <sys/user.h>
+#include <sys/errno.h>
+#include <sys/ktrace.h>
+#include <sys/kdebug.h>
+
+extern void
+unix_syscall(
+ struct savearea *regs
+);
+
+extern struct savearea *
+find_user_regs(
+ thread_act_t act);
+
+extern enter_funnel_section(funnel_t *funnel_lock);
+extern exit_funnel_section(funnel_t *funnel_lock);
+
/*
- * Copyright (c) 1997 Apple Computer, Inc.
+ * Function: unix_syscall
*
- * PowerPC Family: System Call handlers.
+ * Inputs: regs - pointer to Process Control Block
*
- * HISTORY
- * 27-July-97 A. Ramesh
- * Adopted for Common Core.
+ * Outputs: none
*/
-
-#include <mach/mach_types.h>
-#include <mach/error.h>
+void
+unix_syscall(
+ struct savearea *regs
+)
+{
+ thread_act_t thread_act;
+ struct uthread *uthread;
+ struct proc *proc;
+ struct sysent *callp;
+ int error;
+ unsigned short code;
+ boolean_t flavor;
+ int funnel_type;
-#include <kern/syscall_sw.h>
-#include <kern/kdp.h>
+ thread_act = current_act();
+ uthread = get_bsdthread_info(thread_act);
-#include <machdep/ppc/frame.h>
-#include <machdep/ppc/thread.h>
-#include <machdep/ppc/asm.h>
-#include <machdep/ppc/proc_reg.h>
-#include <machdep/ppc/trap.h>
-#include <machdep/ppc/exception.h>
+ if (!(uthread->uu_flag & P_VFORK))
+ proc = (struct proc *)get_bsdtask_info(current_task());
+ else
+ proc = current_proc();
+ flavor = (regs->save_r0 == NULL)? 1: 0;
-#define ERESTART -1 /* restart syscall */
-#define EJUSTRETURN -2 /* don't modify regs, just return */
+ uthread->uu_ar0 = (int *)regs;
+ if (flavor)
+ code = regs->save_r3;
+ else
+ code = regs->save_r0;
-struct unix_syscallargs {
- int flavor;
- int r3;
- int arg1, arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9;
-};
-extern struct sysent { /* system call table */
- int16_t sy_narg; /* number of args */
- int16_t sy_parallel;/* can execute in parallel */
- int32_t (*sy_call)(); /* implementing function */
-} sysent[];
+ callp = (code >= nsysent) ? &sysent[63] : &sysent[code];
-/*
-** Function: unix_syscall
-**
-** Inputs: pcb - pointer to Process Control Block
-** arg1 - arguments to mach system calls
-** arg2
-** arg3
-** arg4
-** arg5
-** arg6
-** arg7
-**
-** Outputs: none
-*/
-void
-unix_syscall(
- struct pcb * pcb,
- int arg1,
- int arg2,
- int arg3,
- int arg4,
- int arg5,
- int arg6,
- int arg7
- )
-{
- struct ppc_saved_state *regs;
- thread_t thread;
- struct proc *p;
- struct sysent *callp;
- int nargs, error;
- unsigned short code;
- int rval[2];
- struct unix_syscallargs sarg;
+#ifdef DEBUG
+ if (callp->sy_narg > 8)
+ panic("unix_syscall: max arg count exceeded");
+#endif
+
+ if (callp->sy_narg != 0) {
+ if ( !flavor) {
+ uthread->uu_arg[0] = regs->save_r3;
+ uthread->uu_arg[1] = regs->save_r4;
+ uthread->uu_arg[2] = regs->save_r5;
+ uthread->uu_arg[3] = regs->save_r6;
+ uthread->uu_arg[4] = regs->save_r7;
+ uthread->uu_arg[5] = regs->save_r8;
+ uthread->uu_arg[6] = regs->save_r9;
+ uthread->uu_arg[7] = regs->save_r10;
+ } else {
+ uthread->uu_arg[0] = regs->save_r4;
+ uthread->uu_arg[1] = regs->save_r5;
+ uthread->uu_arg[2] = regs->save_r6;
+ uthread->uu_arg[3] = regs->save_r7;
+ uthread->uu_arg[4] = regs->save_r8;
+ uthread->uu_arg[5] = regs->save_r9;
+ uthread->uu_arg[7] = regs->save_r10;
+ }
+ }
- if (!USERMODE(pcb->ss.srr1))
- panic("unix_syscall");
+ callp = (code >= nsysent) ? &sysent[63] : &sysent[code];
- regs = &pcb->ss;
- thread = current_thread();
+ if (kdebug_enable && (code != 180)) {
+ if (flavor)
+ KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_EXCP_SC, code) | DBG_FUNC_START,
+ regs->save_r4, regs->save_r5, regs->save_r6, regs->save_r7, 0);
+ else
+ KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_EXCP_SC, code) | DBG_FUNC_START,
+ regs->save_r3, regs->save_r4, regs->save_r5, regs->save_r6, 0);
+ }
+ funnel_type = (int)callp->sy_funnel;
+ if(funnel_type == KERNEL_FUNNEL)
+ enter_funnel_section(kernel_flock);
+ else if (funnel_type == NETWORK_FUNNEL)
+ enter_funnel_section(network_flock);
+
- /*
- ** Get index into sysent table
- */
- code = regs->r0;
+ uthread->uu_rval[0] = 0;
-
/*
- ** Set up call pointer
- */
- callp = (code >= nsysent) ? &sysent[63] : &sysent[code];
+ * r4 is volatile, if we set it to regs->save_r4 here the child
+ * will have parents r4 after execve
+ */
+ uthread->uu_rval[1] = 0;
- sarg. flavor = (callp == sysent): 1: 0;
- sarg. r3 = regs->r3;
- sarg. arg1 = arg1;
- sarg. arg2 = arg2;
- sarg. arg3 = arg3;
- sarg. arg4 = arg4;
- sarg. arg5 = arg5;
- sarg. arg6 = arg6;
- sarg. arg7 = arg7;
+ error = 0;
- set_bsduthreadargs(thread,pcb,&sarg);
+ /*
+ * PPC runtime calls cerror after every unix system call, so
+ * assume no error and adjust the "pc" to skip this call.
+ * It will be set back to the cerror call if an error is detected.
+ */
+ regs->save_srr0 += 4;
+ if (KTRPOINT(proc, KTR_SYSCALL))
+ ktrsyscall(proc, code, callp->sy_narg, uthread->uu_arg, funnel_type);
- if (callp->sy_narg > 8)
- panic("unix_syscall: max arg count exceeded");
+ error = (*(callp->sy_call))(proc, (void *)uthread->uu_arg, &(uthread->uu_rval[0]));
+
+ regs = find_user_regs(thread_act);
- rval[0] = 0;
+ if (error == ERESTART) {
+ regs->save_srr0 -= 8;
+ } else if (error != EJUSTRETURN) {
+ if (error) {
+ regs->save_r3 = error;
+ /* set the "pc" to execute cerror routine */
+ regs->save_srr0 -= 4;
+ } else { /* (not error) */
+ regs->save_r3 = uthread->uu_rval[0];
+ regs->save_r4 = uthread->uu_rval[1];
+ }
+ }
+ /* else (error == EJUSTRETURN) { nothing } */
- /* r4 is volatile, if we set it to regs->r4 here the child
- * will have parents r4 after execve */
- rval[1] = 0;
+ if (KTRPOINT(proc, KTR_SYSRET))
+ ktrsysret(proc, code, error, uthread->uu_rval[0], funnel_type);
- error = 0; /* Start with a good value */
+ if(funnel_type == KERNEL_FUNNEL)
+ exit_funnel_section(kernel_flock);
+ else if (funnel_type == NETWORK_FUNNEL)
+ exit_funnel_section(network_flock);
+
+ if (kdebug_enable && (code != 180)) {
+ KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_EXCP_SC, code) | DBG_FUNC_END,
+ error, uthread->uu_rval[0], uthread->uu_rval[1], 0, 0);
+ }
+
+ thread_exception_return();
+ /* NOTREACHED */
+}
+
+unix_syscall_return(error)
+{
+ thread_act_t thread_act;
+ struct uthread *uthread;
+ struct proc *proc;
+ struct savearea *regs;
+ unsigned short code;
+ struct sysent *callp;
+ int funnel_type;
+
+ thread_act = current_act();
+ proc = current_proc();
+ uthread = get_bsdthread_info(thread_act);
+
+ regs = find_user_regs(thread_act);
/*
- ** the PPC runtime calls cerror after every unix system call, so
- ** assume no error and adjust the "pc" to skip this call.
- ** It will be set back to the cerror call if an error is detected.
- */
- regs->srr0 += 4;
- vt = get_bsduthreadarg(thread);
- p = ((struct proc *)get_bsdtask_info(current_task()));
- error = (*(callp->sy_call))(p, (caddr_t)vt, rval);
-
- if (error == ERESTART) {
- regs->srr0 -= 8;
- }
- else if (error != EJUSTRETURN) {
- if (error)
- {
- regs->r3 = error;
- /* set the "pc" to execute cerror routine */
- regs->srr0 -= 4;
- } else { /* (not error) */
- regs->r3 = rval[0];
- regs->r4 = rval[1];
- }
- }
- /* else (error == EJUSTRETURN) { nothing } */
-
- thread_exception_return();
- /* NOTREACHED */
+ * Get index into sysent table
+ */
+ if (error == ERESTART) {
+ regs->save_srr0 -= 8;
+ } else if (error != EJUSTRETURN) {
+ if (error) {
+ regs->save_r3 = error;
+ /* set the "pc" to execute cerror routine */
+ regs->save_srr0 -= 4;
+ } else { /* (not error) */
+ regs->save_r3 = uthread->uu_rval[0];
+ regs->save_r4 = uthread->uu_rval[1];
+ }
+ }
+ /* else (error == EJUSTRETURN) { nothing } */
+
+ if (regs->save_r0 != NULL)
+ code = regs->save_r0;
+ else
+ code = regs->save_r3;
+
+ callp = (code >= nsysent) ? &sysent[63] : &sysent[code];
+
+ funnel_type = (int)callp->sy_funnel;
+
+ if (KTRPOINT(proc, KTR_SYSRET))
+ ktrsysret(proc, code, error, uthread->uu_rval[0], funnel_type);
+
+ if(funnel_type == KERNEL_FUNNEL)
+ exit_funnel_section(kernel_flock);
+ else if (funnel_type == NETWORK_FUNNEL)
+ exit_funnel_section(network_flock);
+
+ if (kdebug_enable && (code != 180)) {
+ KERNEL_DEBUG_CONSTANT(BSDDBG_CODE(DBG_BSD_EXCP_SC, code) | DBG_FUNC_END,
+ error, uthread->uu_rval[0], uthread->uu_rval[1], 0, 0);
+ }
+
+ thread_exception_return();
+ /* NOTREACHED */
+}
+
+/*
+ * Time of day and interval timer support.
+ *
+ * These routines provide the kernel entry points to get and set
+ * the time-of-day and per-process interval timers. Subroutines
+ * here provide support for adding and subtracting timeval structures
+ * and decrementing interval timers, optionally reloading the interval
+ * timers when they expire.
+ */
+struct gettimeofday_args{
+ struct timeval *tp;
+ struct timezone *tzp;
+};
+/* NOTE THIS implementation is for ppc architectures only */
+int
+ppc_gettimeofday(p, uap, retval)
+ struct proc *p;
+ register struct gettimeofday_args *uap;
+ register_t *retval;
+{
+ struct timeval atv;
+ int error = 0;
+ struct timezone ltz;
+ //struct savearea *child_state;
+ extern simple_lock_data_t tz_slock;
+
+ if (uap->tp) {
+ microtime(&atv);
+ retval[0] = atv.tv_sec;
+ retval[1] = atv.tv_usec;
+ }
+ if (uap->tzp) {
+ usimple_lock(&tz_slock);
+ ltz = tz;
+ usimple_unlock(&tz_slock);
+ error = copyout((caddr_t)<z, (caddr_t)uap->tzp,
+ sizeof (tz));
+ }
+
+ return(error);
}
projects / apple / xnu.git / blobdiff