*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
void (*start_pos)(thread_t))
{
vm_offset_t stack;
- unsigned int *kss;
+ unsigned int *kss, *stck;
struct savearea *sv;
assert(thread->top_act->mact.pcb);
assert(thread->kernel_stack);
stack = thread->kernel_stack;
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("machine_kernel_stack_init(thr=%x,stk=%x,start_pos=%x)\n", thread,stack,start_pos);
-#endif /* MACH_ASSERT */
-
kss = (unsigned int *)STACK_IKS(stack);
sv = thread->top_act->mact.pcb; /* This for the sake of C */
- sv->save_lr = (unsigned int) start_pos; /* Set up the execution address */
- sv->save_srr0 = (unsigned int) start_pos; /* Here too */
+ sv->save_lr = (uint64_t) start_pos; /* Set up the execution address */
+ sv->save_srr0 = (uint64_t) start_pos; /* Here too */
sv->save_srr1 = MSR_SUPERVISOR_INT_OFF; /* Set the normal running MSR */
- sv->save_r1 = (vm_offset_t) ((int)kss - KF_SIZE); /* Point to the top frame on the stack */
+ stck = (unsigned int *)((unsigned int)kss - KF_SIZE); /* Point to the top frame */
+ sv->save_r1 = (uint64_t)stck; /* Point to the top frame on the stack */
sv->save_fpscr = 0; /* Clear all floating point exceptions */
sv->save_vrsave = 0; /* Set the vector save state */
sv->save_vscr[3] = 0x00010000; /* Supress java mode */
- *((int *)sv->save_r1) = 0; /* Zero the frame backpointer */
+ *stck = 0; /* Zero the frame backpointer */
thread->top_act->mact.ksp = 0; /* Show that the kernel stack is in use already */
}
register struct thread_shuttle* retval;
pmap_t new_pmap;
facility_context *fowner;
+ struct per_proc_info *ppinfo;
+
#if MACH_LDEBUG || MACH_KDB
log_thread_action("switch",
(long)__builtin_return_address(0));
#endif
- per_proc_info[cpu_number()].old_thread = (unsigned int)old;
- per_proc_info[cpu_number()].cpu_flags &= ~traceBE; /* disable branch tracing if on */
- assert(old_act->kernel_loaded ||
- active_stacks[cpu_number()] == old_act->thread->kernel_stack);
+ ppinfo = getPerProc(); /* Get our processor block */
+
+ ppinfo->old_thread = (unsigned int)old;
+ ppinfo->cpu_flags &= ~traceBE; /* disable branch tracing if on */
check_simple_locks();
* so that it can be found by the other if needed
*/
if(real_ncpus > 1) { /* This is potentially slow, so only do when actually SMP */
- fowner = per_proc_info[cpu_number()].FPU_owner; /* Cache this because it may change */
+ fowner = ppinfo->FPU_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old->top_act) { /* Is it for us? */
fpu_save(fowner); /* Yes, save it */
}
}
- fowner = per_proc_info[cpu_number()].VMX_owner; /* Cache this because it may change */
+ fowner = ppinfo->VMX_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old->top_act) { /* Is it for us? */
vec_save(fowner); /* Yes, save it */
}
}
-#if DEBUG
- if (watchacts & WA_PCB) {
- printf("switch_context(0x%08x, 0x%x, 0x%08x)\n",
- old,continuation,new);
+ /*
+ * If old thread is running VM, save per proc userProtKey and FamVMmode spcFlags bits in the thread spcFlags
+ * This bits can be modified in the per proc without updating the thread spcFlags
+ */
+ if(old_act->mact.specFlags & runningVM) {
+ old_act->mact.specFlags &= ~(userProtKey|FamVMmode);
+ old_act->mact.specFlags |= (ppinfo->spcFlags) & (userProtKey|FamVMmode);
}
-#endif /* DEBUG */
/*
* We do not have to worry about the PMAP module, so switch.
if(new_act->mact.specFlags & runningVM) { /* Is the new guy running a VM? */
pmap_switch(new_act->mact.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */
+ ppinfo->VMMareaPhys = new_act->mact.vmmCEntry->vmmContextPhys;
+ ppinfo->VMMXAFlgs = new_act->mact.vmmCEntry->vmmXAFlgs;
+ ppinfo->FAMintercept = new_act->mact.vmmCEntry->vmmFAMintercept;
}
else { /* otherwise, we use the task's pmap */
new_pmap = new_act->task->map->pmap;
}
}
+ if(old_act->mact.cioSpace != invalSpace) { /* Does our old guy have an active copyin/out? */
+ old_act->mact.cioSpace |= cioSwitchAway; /* Show we switched away from this guy */
+ hw_blow_seg(copyIOaddr); /* Blow off the first segment */
+ hw_blow_seg(copyIOaddr + 0x10000000ULL); /* Blow off the second segment */
+ }
+
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_SCHED) | DBG_FUNC_NONE,
(int)old, (int)new, old->sched_pri, new->sched_pri, 0);
+/* *********** SWITCH HERE **************/
retval = Switch_context(old, continuation, new);
assert(retval != (struct thread_shuttle*)NULL);
+/* *********** SWITCH HERE **************/
+
- if (branch_tracing_enabled())
- per_proc_info[cpu_number()].cpu_flags |= traceBE; /* restore branch tracing */
+ if (branch_tracing_enabled()) {
+ ppinfo = getPerProc(); /* Get our processor block */
+ ppinfo->cpu_flags |= traceBE; /* restore branch tracing */
+ }
/* We've returned from having switched context, so we should be
* back in the original context.
kern_return_t retval)
{
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("thread_set_syscall_return(thr=%x,retval=%d)\n", thread,retval);
-#endif /* MACH_ASSERT */
-
thread->top_act->mact.pcb->save_r3 = retval;
}
unsigned int *CIsTooLimited, i;
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("thread_machine_create(thr=%x,thr_act=%x,st=%x)\n", thread, thr_act, start_pos);
-#endif /* MACH_ASSERT */
-
hw_atomic_add(&saveanchor.savetarget, 4); /* Account for the number of saveareas we think we "need"
for this activation */
assert(thr_act->mact.pcb == (savearea *)0); /* Make sure there was no previous savearea */
sv->save_hdr.save_prev = 0; /* Clear the back pointer */
sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use */
sv->save_hdr.save_act = thr_act; /* Set who owns it */
- sv->save_vscr[3] = 0x00010000; /* Supress java mode */
thr_act->mact.pcb = sv; /* Point to the save area */
thr_act->mact.curctx = &thr_act->mact.facctx; /* Initialize facility context */
thr_act->mact.facctx.facAct = thr_act; /* Initialize facility context pointer to activation */
+ thr_act->mact.cioSpace = invalSpace; /* Initialize copyin/out space to invalid */
+ thr_act->mact.preemption_count = 0; /* Initialize preemption counter */
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("pcb_init(%x) pcb=%x\n", thr_act, sv);
-#endif /* MACH_ASSERT */
/*
* User threads will pull their context from the pcb when first
* returning to user mode, so fill in all the necessary values.
* at the base of the kernel stack (see stack_attach()).
*/
- sv->save_srr1 = MSR_EXPORT_MASK_SET; /* Set the default user MSR */
+ sv->save_srr1 = (uint64_t)MSR_EXPORT_MASK_SET; /* Set the default user MSR */
+ sv->save_fpscr = 0; /* Clear all floating point exceptions */
+ sv->save_vrsave = 0; /* Set the vector save state */
+ sv->save_vscr[0] = 0x00000000;
+ sv->save_vscr[1] = 0x00000000;
+ sv->save_vscr[2] = 0x00000000;
+ sv->save_vscr[3] = 0x00010000; /* Disable java mode and clear saturated */
- CIsTooLimited = (unsigned int *)(&sv->save_sr0); /* Make a pointer 'cause C can't cast on the left */
- for(i=0; i<16; i++) { /* Initialize all SRs */
- CIsTooLimited[i] = SEG_REG_PROT | (i << 20) | thr_act->task->map->pmap->space; /* Set the SR value */
- }
-
return(KERN_SUCCESS);
}
{
pmap_t new_pmap;
facility_context *fowner;
+ struct per_proc_info *ppinfo;
+
+ ppinfo = getPerProc(); /* Get our processor block */
/* Our context might wake up on another processor, so we must
* not keep hot state in our FPU, it must go back to the pcb
* so that it can be found by the other if needed
*/
if(real_ncpus > 1) { /* This is potentially slow, so only do when actually SMP */
- fowner = per_proc_info[cpu_number()].FPU_owner; /* Cache this because it may change */
+ fowner = ppinfo->FPU_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old) { /* Is it for us? */
fpu_save(fowner); /* Yes, save it */
}
}
- fowner = per_proc_info[cpu_number()].VMX_owner; /* Cache this because it may change */
+ fowner = ppinfo->VMX_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old) { /* Is it for us? */
vec_save(fowner); /* Yes, save it */
}
}
+ old->mact.cioSpace |= cioSwitchAway; /* Show we switched away from this guy */
+
active_stacks[cpu] = thread->kernel_stack;
ast_context(new, cpu);
* Change space if needed
*/
- if(new->mact.specFlags & runningVM) { /* Is the new guy running a VM? */
- pmap_switch(new->mact.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */
+ if(new->mact.specFlags & runningVM) { /* Is the new guy running a VM? */
+ pmap_switch(new->mact.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */
}
else { /* otherwise, we use the task's pmap */
new_pmap = new->task->map->pmap;
}
}
+
}
void
pcb_user_to_kernel(thread_act_t act)
{
- return; /* Not needed, I hope... */
+ return; /* Not needed, I hope... */
}
act_machine_sv_free(thread_act_t act)
{
register savearea *pcb, *userpcb;
- register savearea_vec *vsv, *vpsv;
- register savearea_fpu *fsv, *fpsv;
+ register savearea_vec *vsv, *vpst, *vsvt;
+ register savearea_fpu *fsv, *fpst, *fsvt;
register savearea *svp;
register int i;
*
* Walk through and release all floating point and vector contexts that are not
* user state. We will also blow away live context if it belongs to non-user state.
+ * Note that the level can not change while we are in this code. Nor can another
+ * context be pushed on the stack.
+ *
+ * We do nothing here if the current level is user. Otherwise,
+ * the live context is cleared. Then we find the user saved context.
+ * Next, we take the sync lock (to keep us from munging things in *_switch).
+ * The level is set to 0 and all stacked context other than user is dequeued.
+ * Then we unlock. Next, all of the old kernel contexts are released.
*
*/
if(act->mact.curctx->VMXlevel) { /* Is the current level user state? */
+
toss_live_vec(act->mact.curctx); /* Dump live vectors if is not user */
- act->mact.curctx->VMXlevel = 0; /* Mark as user state */
- }
- vsv = act->mact.curctx->VMXsave; /* Get the top vector savearea */
-
- while(vsv) { /* Any VMX saved state? */
- vpsv = vsv; /* Remember so we can toss this */
- if (!vsv->save_hdr.save_level) break; /* Done when hit user if any */
- vsv = (savearea_vec *)vsv->save_hdr.save_prev; /* Get one underneath our's */
- save_ret((savearea *)vpsv); /* Release it */
- }
+ vsv = act->mact.curctx->VMXsave; /* Get the top vector savearea */
+
+ while(vsv && vsv->save_hdr.save_level) vsv = (savearea_vec *)vsv->save_hdr.save_prev; /* Find user context if any */
- act->mact.curctx->VMXsave = vsv; /* Queue the user context to the top */
+ if(!hw_lock_to((hw_lock_t)&act->mact.curctx->VMXsync, LockTimeOut)) { /* Get the sync lock */
+ panic("act_machine_sv_free - timeout getting VMX sync lock\n"); /* Tell all and die */
+ }
+
+ vsvt = act->mact.curctx->VMXsave; /* Get the top of the chain */
+ act->mact.curctx->VMXsave = vsv; /* Point to the user context */
+ act->mact.curctx->VMXlevel = 0; /* Set the level to user */
+ hw_lock_unlock((hw_lock_t)&act->mact.curctx->VMXsync); /* Unlock */
+
+ while(vsvt) { /* Clear any VMX saved state */
+ if (vsvt == vsv) break; /* Done when hit user if any */
+ vpst = vsvt; /* Remember so we can toss this */
+ vsvt = (savearea_vec *)vsvt->save_hdr.save_prev; /* Get one underneath our's */
+ save_ret((savearea *)vpst); /* Release it */
+ }
+
+ }
if(act->mact.curctx->FPUlevel) { /* Is the current level user state? */
- toss_live_fpu(act->mact.curctx); /* Dump live float if is not user */
- act->mact.curctx->FPUlevel = 0; /* Mark as user state */
- }
+
+ toss_live_fpu(act->mact.curctx); /* Dump live floats if is not user */
- fsv = act->mact.curctx->FPUsave; /* Get the top float savearea */
+ fsv = act->mact.curctx->FPUsave; /* Get the top floats savearea */
+
+ while(fsv && fsv->save_hdr.save_level) fsv = (savearea_fpu *)fsv->save_hdr.save_prev; /* Find user context if any */
- while(fsv) { /* Any float saved state? */
- fpsv = fsv; /* Remember so we can toss this */
- if (!fsv->save_hdr.save_level) break; /* Done when hit user if any */
- fsv = (savearea_fpu *)fsv->save_hdr.save_prev; /* Get one underneath our's */
- save_ret((savearea *)fpsv); /* Release it */
+ if(!hw_lock_to((hw_lock_t)&act->mact.curctx->FPUsync, LockTimeOut)) { /* Get the sync lock */
+ panic("act_machine_sv_free - timeout getting FPU sync lock\n"); /* Tell all and die */
+ }
+
+ fsvt = act->mact.curctx->FPUsave; /* Get the top of the chain */
+ act->mact.curctx->FPUsave = fsv; /* Point to the user context */
+ act->mact.curctx->FPUlevel = 0; /* Set the level to user */
+ hw_lock_unlock((hw_lock_t)&act->mact.curctx->FPUsync); /* Unlock */
+
+ while(fsvt) { /* Clear any VMX saved state */
+ if (fsvt == fsv) break; /* Done when hit user if any */
+ fpst = fsvt; /* Remember so we can toss this */
+ fsvt = (savearea_fpu *)fsvt->save_hdr.save_prev; /* Get one underneath our's */
+ save_ret((savearea *)fpst); /* Release it */
+ }
+
}
-
- act->mact.curctx->FPUsave = fsv; /* Queue the user context to the top */
/*
* free all regular saveareas except a user savearea, if any
register savearea *svp;
register int i;
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("act_machine_destroy(0x%x)\n", act);
-#endif /* MACH_ASSERT */
-
/*
* This function will release all context.
*/
void act_machine_init()
{
-#if MACH_ASSERT
- if (watchacts & WA_PCB)
- printf("act_machine_init()\n");
-#endif /* MACH_ASSERT */
/* Good to verify these once */
assert( THREAD_MACHINE_STATE_MAX <= THREAD_STATE_MAX );
{
thread_act_t thr_act = current_act();
-#if MACH_ASSERT
- if (watchacts & WA_EXIT)
- printf("act_machine_return(0x%x) cur_act=%x(%d) thr=%x(%d)\n",
- code, thr_act, thr_act->ref_count,
- thr_act->thread, thr_act->thread->ref_count);
-#endif /* MACH_ASSERT */
-
-
/*
* This code is called with nothing locked.
* It also returns with nothing locked, if it returns.
vm_offset_t stack;
pmap_t new_pmap;
facility_context *fowner;
+ int my_cpu;
+ mapping *mp;
+ struct per_proc_info *ppinfo;
assert(new->top_act);
assert(old->top_act);
+ my_cpu = cpu_number();
stack = stack_detach(old);
new->kernel_stack = stack;
if (stack == old->stack_privilege) {
new->stack_privilege = stack;
}
- per_proc_info[cpu_number()].cpu_flags &= ~traceBE;
+ ppinfo = getPerProc(); /* Get our processor block */
+
+ ppinfo->cpu_flags &= ~traceBE; /* Turn off special branch trace */
if(real_ncpus > 1) { /* This is potentially slow, so only do when actually SMP */
- fowner = per_proc_info[cpu_number()].FPU_owner; /* Cache this because it may change */
+ fowner = ppinfo->FPU_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old->top_act) { /* Is it for us? */
fpu_save(fowner); /* Yes, save it */
}
}
- fowner = per_proc_info[cpu_number()].VMX_owner; /* Cache this because it may change */
+ fowner = ppinfo->VMX_owner; /* Cache this because it may change */
if(fowner) { /* Is there any live context? */
if(fowner->facAct == old->top_act) { /* Is it for us? */
vec_save(fowner); /* Yes, save it */
}
}
}
+ /*
+ * If old thread is running VM, save per proc userProtKey and FamVMmode spcFlags bits in the thread spcFlags
+ * This bits can be modified in the per proc without updating the thread spcFlags
+ */
+ if(old->top_act->mact.specFlags & runningVM) { /* Is the current thread running a VM? */
+ old->top_act->mact.specFlags &= ~(userProtKey|FamVMmode);
+ old->top_act->mact.specFlags |= (ppinfo->spcFlags) & (userProtKey|FamVMmode);
+ }
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_HANDOFF) | DBG_FUNC_NONE,
(int)old, (int)new, old->sched_pri, new->sched_pri, 0);
if(new->top_act->mact.specFlags & runningVM) { /* Is the new guy running a VM? */
pmap_switch(new->top_act->mact.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */
+ ppinfo->VMMareaPhys = new->top_act->mact.vmmCEntry->vmmContextPhys;
+ ppinfo->VMMXAFlgs = new->top_act->mact.vmmCEntry->vmmXAFlgs;
+ ppinfo->FAMintercept = new->top_act->mact.vmmCEntry->vmmFAMintercept;
}
else { /* otherwise, we use the task's pmap */
new_pmap = new->top_act->task->map->pmap;
}
thread_machine_set_current(new);
- active_stacks[cpu_number()] = new->kernel_stack;
- per_proc_info[cpu_number()].Uassist = new->top_act->mact.cthread_self;
+ active_stacks[my_cpu] = new->kernel_stack;
+ ppinfo->Uassist = new->top_act->mact.cthread_self;
- per_proc_info[cpu_number()].ppbbTaskEnv = new->top_act->mact.bbTaskEnv;
- per_proc_info[cpu_number()].spcFlags = new->top_act->mact.specFlags;
+ ppinfo->ppbbTaskEnv = new->top_act->mact.bbTaskEnv;
+ ppinfo->spcFlags = new->top_act->mact.specFlags;
+
+ old->top_act->mact.cioSpace |= cioSwitchAway; /* Show we switched away from this guy */
+ mp = (mapping *)&ppinfo->ppCIOmp;
+ mp->mpSpace = invalSpace; /* Since we can't handoff in the middle of copy in/out, just invalidate */
if (branch_tracing_enabled())
- per_proc_info[cpu_number()].cpu_flags |= traceBE;
+ ppinfo->cpu_flags |= traceBE;
- if(trcWork.traceMask) dbgTrace(0x12345678, (unsigned int)old->top_act, (unsigned int)new->top_act); /* Cut trace entry if tracing */
+ if(trcWork.traceMask) dbgTrace(0x12345678, (unsigned int)old->top_act, (unsigned int)new->top_act, 0); /* Cut trace entry if tracing */
return;
}
projects / apple / xnu.git / blobdiff