X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..0c530ab8987f0ae6a1a3d9284f40182b88852816:/osfmk/ppc/pcb.c diff --git a/osfmk/ppc/pcb.c b/osfmk/ppc/pcb.c index 8354f6419..653b9b3f3 100644 --- a/osfmk/ppc/pcb.c +++ b/osfmk/ppc/pcb.c @@ -1,24 +1,21 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. + * 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. * - * 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 + * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * * @APPLE_LICENSE_HEADER_END@ */ @@ -47,37 +44,41 @@ * Utah $Hdr: pcb.c 1.23 92/06/27$ */ -#include #include #include + +#include +#include + +#include #include #include -#include -#include -#include -#include +#include #include +#include + +#include +#include -#include #include +#include #include #include -#include #include #include #include #include #include #include -#include +#include #include #include +#include #include -extern int real_ncpus; /* Number of actual CPUs */ -extern struct Saveanchor saveanchor; /* Aliged savearea anchor */ +void machine_act_terminate(thread_t); /* * These constants are dumb. They should not be in asm.h! @@ -92,17 +93,6 @@ int vec_trap_count = 0; int vec_switch_count = 0; #endif -extern struct thread_shuttle *Switch_context( - struct thread_shuttle *old, - void (*cont)(void), - struct thread_shuttle *new); - - -#if MACH_LDEBUG || MACH_KDB -void log_thread_action (char *, long, long, long); -#endif - - /* * consider_machine_collect: try to collect machine-dependent pages */ @@ -121,72 +111,30 @@ consider_machine_adjust() consider_mapping_adjust(); } - -/* - * stack_attach: Attach a kernel stack to a thread. - */ -void -machine_kernel_stack_init( - struct thread_shuttle *thread, - void (*start_pos)(thread_t)) -{ - vm_offset_t stack; - unsigned int *kss, *stck; - struct savearea *sv; - - assert(thread->top_act->mact.pcb); - assert(thread->kernel_stack); - stack = thread->kernel_stack; - - kss = (unsigned int *)STACK_IKS(stack); - sv = thread->top_act->mact.pcb; /* This for the sake of C */ - - 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 */ - 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 */ - - *stck = 0; /* Zero the frame backpointer */ - thread->top_act->mact.ksp = 0; /* Show that the kernel stack is in use already */ - -} - /* * switch_context: Switch from one thread to another, needed for * switching of space * */ -struct thread_shuttle* -switch_context( - struct thread_shuttle *old, - void (*continuation)(void), - struct thread_shuttle *new) +thread_t +machine_switch_context( + thread_t old, + thread_continue_t continuation, + thread_t new) { - register thread_act_t old_act = old->top_act, new_act = new->top_act; - register struct thread_shuttle* retval; + register thread_t retval; pmap_t new_pmap; facility_context *fowner; struct per_proc_info *ppinfo; - - -#if MACH_LDEBUG || MACH_KDB - log_thread_action("switch", - (long)old, - (long)new, - (long)__builtin_return_address(0)); -#endif + + if (old == new) + panic("machine_switch_context"); ppinfo = getPerProc(); /* Get our processor block */ ppinfo->old_thread = (unsigned int)old; ppinfo->cpu_flags &= ~traceBE; /* disable branch tracing if on */ - check_simple_locks(); - /* 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 @@ -194,13 +142,13 @@ switch_context( if(real_ncpus > 1) { /* This is potentially slow, so only do when actually SMP */ 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? */ + if(fowner->facAct == old) { /* Is it for us? */ fpu_save(fowner); /* Yes, save it */ } } 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? */ + if(fowner->facAct == old) { /* Is it for us? */ vec_save(fowner); /* Yes, save it */ } } @@ -210,45 +158,44 @@ switch_context( * 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); + if(old->machine.specFlags & runningVM) { + old->machine.specFlags &= ~(userProtKey|FamVMmode); + old->machine.specFlags |= (ppinfo->spcFlags) & (userProtKey|FamVMmode); } + old->machine.specFlags &= ~OnProc; + new->machine.specFlags |= OnProc; /* * We do not have to worry about the PMAP module, so switch. * - * We must not use top_act->map since this may not be the actual + * We must not use thread->map since this may not be the actual * task map, but the map being used for a klcopyin/out. */ - 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; + if(new->machine.specFlags & runningVM) { /* Is the new guy running a VM? */ + pmap_switch(new->machine.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */ + ppinfo->VMMareaPhys = new->machine.vmmCEntry->vmmContextPhys; + ppinfo->VMMXAFlgs = new->machine.vmmCEntry->vmmXAFlgs; + ppinfo->FAMintercept = new->machine.vmmCEntry->vmmFAMintercept; } else { /* otherwise, we use the task's pmap */ - new_pmap = new_act->task->map->pmap; - if ((old_act->task->map->pmap != new_pmap) || (old_act->mact.specFlags & runningVM)) { + new_pmap = new->task->map->pmap; + if ((old->task->map->pmap != new_pmap) || (old->machine.specFlags & runningVM)) { pmap_switch(new_pmap); /* Switch if there is a change */ } } - 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 */ + if(old->machine.umwSpace != invalSpace) { /* Does our old guy have an active window? */ + old->machine.umwSpace |= umwSwitchAway; /* Show we switched away from this guy */ + hw_blow_seg(lowGlo.lgUMWvaddr); /* Blow off the first segment */ + hw_blow_seg(lowGlo.lgUMWvaddr + 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); + old->reason, (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 **************/ - + assert(retval != NULL); if (branch_tracing_enabled()) { ppinfo = getPerProc(); /* Get our processor block */ @@ -262,36 +209,20 @@ switch_context( return retval; } -/* - * Alter the thread's state so that a following thread_exception_return - * will make the thread return 'retval' from a syscall. - */ -void -thread_set_syscall_return( - struct thread_shuttle *thread, - kern_return_t retval) -{ - - thread->top_act->mact.pcb->save_r3 = retval; -} - /* * Initialize the machine-dependent state for a new thread. */ kern_return_t -thread_machine_create( - struct thread_shuttle *thread, - thread_act_t thr_act, - void (*start_pos)(thread_t)) +machine_thread_create( + thread_t thread, + task_t task) { - savearea *sv; /* Pointer to newly allocated savearea */ unsigned int *CIsTooLimited, i; - - hw_atomic_add(&saveanchor.savetarget, 4); /* Account for the number of saveareas we think we "need" + hw_atomic_add((uint32_t *)&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 */ + assert(thread->machine.pcb == (savearea *)0); /* Make sure there was no previous savearea */ sv = save_alloc(); /* Go get us a savearea */ @@ -299,12 +230,12 @@ thread_machine_create( 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 */ - 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 */ + sv->save_hdr.save_act = thread; /* Set who owns it */ + thread->machine.pcb = sv; /* Point to the save area */ + thread->machine.curctx = &thread->machine.facctx; /* Initialize facility context */ + thread->machine.facctx.facAct = thread; /* Initialize facility context pointer to activation */ + thread->machine.umwSpace = invalSpace; /* Initialize user memory window space to invalid */ + thread->machine.preemption_count = 0; /* Initialize preemption counter */ /* * User threads will pull their context from the pcb when first @@ -313,7 +244,9 @@ thread_machine_create( * at the base of the kernel stack (see stack_attach()). */ + thread->machine.upcb = sv; /* Set user pcb */ sv->save_srr1 = (uint64_t)MSR_EXPORT_MASK_SET; /* Set the default user MSR */ + if(task_has_64BitAddr(task)) sv->save_srr1 |= (uint64_t)MASK32(MSR_SF) << 32; /* If 64-bit task, force 64-bit mode */ sv->save_fpscr = 0; /* Clear all floating point exceptions */ sv->save_vrsave = 0; /* Set the vector save state */ sv->save_vscr[0] = 0x00000000; @@ -328,117 +261,90 @@ thread_machine_create( * Machine-dependent cleanup prior to destroying a thread */ void -thread_machine_destroy( thread_t thread ) +machine_thread_destroy( + thread_t thread) { - spl_t s; - - if (thread->kernel_stack) { - s = splsched(); - stack_free(thread); - splx(s); - } -} - -/* - * flush out any lazily evaluated HW state in the - * owning thread's context, before termination. - */ -void -thread_machine_flush( thread_act_t cur_act ) -{ -} + register savearea *pcb, *ppsv; + register savearea_vec *vsv, *vpsv; + register savearea_fpu *fsv, *fpsv; + register savearea *svp; + register int i; + boolean_t intr; /* - * Number of times we needed to swap an activation back in before - * switching to it. + * This function will release all context. */ -int switch_act_swapins = 0; + machine_act_terminate(thread); /* Make sure all virtual machines are dead first */ + /* - * machine_switch_act * - * Machine-dependent details of activation switching. Called with - * RPC locks held and preemption disabled. + * Walk through and release all floating point and vector contexts. Also kill live context. + * */ -void -machine_switch_act( - thread_t thread, - thread_act_t old, - thread_act_t new, - int cpu) -{ - 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 = 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 = 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); - - /* Activations might have different pmaps - * (process->kernel->server, for example). - * Change space if needed - */ + intr = ml_set_interrupts_enabled(FALSE); /* Disable for interruptions */ + + toss_live_vec(thread->machine.curctx); /* Dump live vectors */ - if(new->mact.specFlags & runningVM) { /* Is the new guy running a VM? */ - pmap_switch(new->mact.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */ + vsv = thread->machine.curctx->VMXsave; /* Get the top vector savearea */ + + while(vsv) { /* Any VMX saved state? */ + vpsv = vsv; /* Remember so we can toss this */ + vsv = CAST_DOWN(savearea_vec *, vsv->save_hdr.save_prev); /* Get one underneath our's */ + save_release((savearea *)vpsv); /* Release it */ } - else { /* otherwise, we use the task's pmap */ - new_pmap = new->task->map->pmap; - if ((old->task->map->pmap != new_pmap) || (old->mact.specFlags & runningVM)) { - pmap_switch(new_pmap); - } + + thread->machine.curctx->VMXsave = 0; /* Kill chain */ + + toss_live_fpu(thread->machine.curctx); /* Dump live float */ + + fsv = thread->machine.curctx->FPUsave; /* Get the top float savearea */ + + while(fsv) { /* Any float saved state? */ + fpsv = fsv; /* Remember so we can toss this */ + fsv = CAST_DOWN(savearea_fpu *, fsv->save_hdr.save_prev); /* Get one underneath our's */ + save_release((savearea *)fpsv); /* Release it */ } + + thread->machine.curctx->FPUsave = 0; /* Kill chain */ +/* + * free all regular saveareas. + */ -} + pcb = thread->machine.pcb; /* Get the general savearea */ + + while(pcb) { /* Any float saved state? */ + ppsv = pcb; /* Remember so we can toss this */ + pcb = CAST_DOWN(savearea *, pcb->save_hdr.save_prev); /* Get one underneath our's */ + save_release(ppsv); /* Release it */ + } + + hw_atomic_sub((uint32_t *)&saveanchor.savetarget, 4); /* Unaccount for the number of saveareas we think we "need" */ -void -pcb_user_to_kernel(thread_act_t act) -{ + (void) ml_set_interrupts_enabled(intr); /* Restore interrupts if enabled */ - return; /* Not needed, I hope... */ } - /* * act_machine_sv_free * release saveareas associated with an act. if flag is true, release * user level savearea(s) too, else don't * - * this code cannot block so we call the proper save area free routine + * This code must run with interruptions disabled because an interrupt handler could use + * floating point and/or vectors. If this happens and the thread we are blowing off owns + * the facility, we can deadlock. */ void -act_machine_sv_free(thread_act_t act) +act_machine_sv_free(thread_t act) { register savearea *pcb, *userpcb; register savearea_vec *vsv, *vpst, *vsvt; register savearea_fpu *fsv, *fpst, *fsvt; register savearea *svp; register int i; + boolean_t intr; /* * This function will release all non-user state context. @@ -458,23 +364,24 @@ act_machine_sv_free(thread_act_t act) * 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 */ - vsv = act->mact.curctx->VMXsave; /* Get the top vector savearea */ + intr = ml_set_interrupts_enabled(FALSE); /* Disable for interruptions */ + + if(act->machine.curctx->VMXlevel) { /* Is the current level user state? */ + + toss_live_vec(act->machine.curctx); /* Dump live vectors if is not user */ - while(vsv && vsv->save_hdr.save_level) vsv = (savearea_vec *)vsv->save_hdr.save_prev; /* Find user context if any */ - - if(!hw_lock_to((hw_lock_t)&act->mact.curctx->VMXsync, LockTimeOut)) { /* Get the sync lock */ + if(!hw_lock_to((hw_lock_t)&act->machine.curctx->VMXsync, LockTimeOut)) { /* Get the sync lock */ panic("act_machine_sv_free - timeout getting VMX sync lock\n"); /* Tell all and die */ } + + vsv = act->machine.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 */ - 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 */ + vsvt = act->machine.curctx->VMXsave; /* Get the top of the chain */ + act->machine.curctx->VMXsave = vsv; /* Point to the user context */ + act->machine.curctx->VMXlevel = 0; /* Set the level to user */ + hw_lock_unlock((hw_lock_t)&act->machine.curctx->VMXsync); /* Unlock */ while(vsvt) { /* Clear any VMX saved state */ if (vsvt == vsv) break; /* Done when hit user if any */ @@ -485,22 +392,21 @@ act_machine_sv_free(thread_act_t act) } - if(act->mact.curctx->FPUlevel) { /* Is the current level user state? */ + if(act->machine.curctx->FPUlevel) { /* Is the current level user state? */ - toss_live_fpu(act->mact.curctx); /* Dump live floats if is not user */ + toss_live_fpu(act->machine.curctx); /* Dump live floats if is not user */ - 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 */ - - if(!hw_lock_to((hw_lock_t)&act->mact.curctx->FPUsync, LockTimeOut)) { /* Get the sync lock */ + if(!hw_lock_to((hw_lock_t)&act->machine.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 */ + fsv = act->machine.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 */ + + fsvt = act->machine.curctx->FPUsave; /* Get the top of the chain */ + act->machine.curctx->FPUsave = fsv; /* Point to the user context */ + act->machine.curctx->FPUlevel = 0; /* Set the level to user */ + hw_lock_unlock((hw_lock_t)&act->machine.curctx->FPUsync); /* Unlock */ while(fsvt) { /* Clear any VMX saved state */ if (fsvt == fsv) break; /* Done when hit user if any */ @@ -515,7 +421,7 @@ act_machine_sv_free(thread_act_t act) * free all regular saveareas except a user savearea, if any */ - pcb = act->mact.pcb; /* Get the general savearea */ + pcb = act->machine.pcb; /* Get the general savearea */ userpcb = 0; /* Assume no user context for now */ while(pcb) { /* Any float saved state? */ @@ -524,164 +430,36 @@ act_machine_sv_free(thread_act_t act) break; } svp = pcb; /* Remember this */ - pcb = pcb->save_hdr.save_prev; /* Get one underneath our's */ + pcb = CAST_DOWN(savearea *, pcb->save_hdr.save_prev); /* Get one underneath our's */ save_ret(svp); /* Release it */ } - act->mact.pcb = userpcb; /* Chain in the user if there is one, or 0 if not */ - -} + act->machine.pcb = userpcb; /* Chain in the user if there is one, or 0 if not */ + (void) ml_set_interrupts_enabled(intr); /* Restore interrupts if enabled */ +} -/* - * act_virtual_machine_destroy: - * Shutdown any virtual machines associated with a thread - */ void -act_virtual_machine_destroy(thread_act_t act) +machine_act_terminate( + thread_t act) { - if(act->mact.bbDescAddr) { /* Check if the Blue box assist is active */ + if(act->machine.bbDescAddr) { /* Check if the Blue box assist is active */ disable_bluebox_internal(act); /* Kill off bluebox */ } - if(act->mact.vmmControl) { /* Check if VMM is active */ + if(act->machine.vmmControl) { /* Check if VMM is active */ vmm_tear_down_all(act); /* Kill off all VMM contexts */ } } -/* - * act_machine_destroy: Shutdown any state associated with a thread pcb. - */ -void -act_machine_destroy(thread_act_t act) -{ - - register savearea *pcb, *ppsv; - register savearea_vec *vsv, *vpsv; - register savearea_fpu *fsv, *fpsv; - register savearea *svp; - register int i; - -/* - * This function will release all context. - */ - - act_virtual_machine_destroy(act); /* Make sure all virtual machines are dead first */ - -/* - * - * Walk through and release all floating point and vector contexts. Also kill live context. - * - */ - - toss_live_vec(act->mact.curctx); /* Dump live vectors */ - - vsv = act->mact.curctx->VMXsave; /* Get the top vector savearea */ - - while(vsv) { /* Any VMX saved state? */ - vpsv = vsv; /* Remember so we can toss this */ - vsv = (savearea_vec *)vsv->save_hdr.save_prev; /* Get one underneath our's */ - save_release((savearea *)vpsv); /* Release it */ - } - - act->mact.curctx->VMXsave = 0; /* Kill chain */ - - toss_live_fpu(act->mact.curctx); /* Dump live float */ - - fsv = act->mact.curctx->FPUsave; /* Get the top float savearea */ - - while(fsv) { /* Any float saved state? */ - fpsv = fsv; /* Remember so we can toss this */ - fsv = (savearea_fpu *)fsv->save_hdr.save_prev; /* Get one underneath our's */ - save_release((savearea *)fpsv); /* Release it */ - } - - act->mact.curctx->FPUsave = 0; /* Kill chain */ - -/* - * free all regular saveareas. - */ - - pcb = act->mact.pcb; /* Get the general savearea */ - - while(pcb) { /* Any float saved state? */ - ppsv = pcb; /* Remember so we can toss this */ - pcb = pcb->save_hdr.save_prev; /* Get one underneath our's */ - save_release(ppsv); /* Release it */ - } - - hw_atomic_sub(&saveanchor.savetarget, 4); /* Unaccount for the number of saveareas we think we "need" */ - -} - - -kern_return_t -act_machine_create(task_t task, thread_act_t thr_act) -{ - /* - * Clear & Init the pcb (sets up user-mode s regs) - * We don't use this anymore. - */ - - return KERN_SUCCESS; -} - -void act_machine_init() -{ - - /* Good to verify these once */ - assert( THREAD_MACHINE_STATE_MAX <= THREAD_STATE_MAX ); - - assert( THREAD_STATE_MAX >= PPC_THREAD_STATE_COUNT ); - assert( THREAD_STATE_MAX >= PPC_EXCEPTION_STATE_COUNT ); - assert( THREAD_STATE_MAX >= PPC_FLOAT_STATE_COUNT ); - - /* - * If we start using kernel activations, - * would normally create kernel_thread_pool here, - * populating it from the act_zone - */ -} - void -act_machine_return(int code) +machine_thread_terminate_self(void) { - thread_act_t thr_act = current_act(); - - /* - * This code is called with nothing locked. - * It also returns with nothing locked, if it returns. - * - * This routine terminates the current thread activation. - * If this is the only activation associated with its - * thread shuttle, then the entire thread (shuttle plus - * activation) is terminated. - */ - assert( code == KERN_TERMINATED ); - assert( thr_act ); - assert(thr_act->thread->top_act == thr_act); - - /* This is the only activation attached to the shuttle... */ - - thread_terminate_self(); - - /*NOTREACHED*/ - panic("act_machine_return: TALKING ZOMBIE! (1)"); + machine_act_terminate(current_thread()); } void -thread_machine_set_current(struct thread_shuttle *thread) -{ - register int my_cpu = cpu_number(); - - set_machine_current_thread(thread); - set_machine_current_act(thread->top_act); - - active_kloaded[my_cpu] = thread->top_act->kernel_loaded ? thread->top_act : THR_ACT_NULL; -} - -void -thread_machine_init(void) +machine_thread_init(void) { #ifdef MACHINE_STACK #if KERNEL_STACK_SIZE > PPC_PGBYTES @@ -699,33 +477,27 @@ dump_thread(thread_t th) } int - dump_act(thread_act_t thr_act) + dump_act(thread_t thr_act) { if (!thr_act) return(0); - printf("thr_act(0x%x)(%d): thread=%x(%d) task=%x(%d)\n", + printf("thread(0x%x)(%d): task=%x(%d)\n", thr_act, thr_act->ref_count, - thr_act->thread, thr_act->thread ? thr_act->thread->ref_count:0, thr_act->task, thr_act->task ? thr_act->task->ref_count : 0); - printf("\talerts=%x mask=%x susp=%x active=%x hi=%x lo=%x\n", - thr_act->alerts, thr_act->alert_mask, - thr_act->suspend_count, thr_act->active, - thr_act->higher, thr_act->lower); + printf("\tsusp=%x active=%x\n", + thr_act->suspend_count, thr_act->active); return((int)thr_act); } #endif -unsigned int +user_addr_t get_useraddr() { - - thread_act_t thr_act = current_act(); - - return(thr_act->mact.pcb->save_srr0); + return(current_thread()->machine.upcb->save_srr0); } /* @@ -733,7 +505,8 @@ get_useraddr() */ vm_offset_t -stack_detach(thread_t thread) +machine_stack_detach( + thread_t thread) { vm_offset_t stack; @@ -741,8 +514,7 @@ stack_detach(thread_t thread) thread, thread->priority, thread->sched_pri, 0, 0); - if (thread->top_act) - act_machine_sv_free(thread->top_act); + act_machine_sv_free(thread); stack = thread->kernel_stack; thread->kernel_stack = 0; @@ -762,18 +534,16 @@ stack_detach(thread_t thread) */ void -stack_attach(struct thread_shuttle *thread, - vm_offset_t stack, - void (*start_pos)(thread_t)) +machine_stack_attach( + thread_t thread, + vm_offset_t stack) { - thread_act_t thr_act; unsigned int *kss; struct savearea *sv; KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_ATTACH), thread, thread->priority, - thread->sched_pri, start_pos, - 0); + thread->sched_pri, 0, 0); assert(stack); kss = (unsigned int *)STACK_IKS(stack); @@ -781,25 +551,22 @@ stack_attach(struct thread_shuttle *thread, /* during initialization we sometimes do not have an activation. in that case do not do anything */ - if ((thr_act = thread->top_act) != 0) { - sv = save_get(); /* cannot block */ - sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use */ - sv->save_hdr.save_act = thr_act; - sv->save_hdr.save_prev = thr_act->mact.pcb; - thr_act->mact.pcb = sv; - - sv->save_srr0 = (unsigned int) start_pos; - /* sv->save_r3 = ARG ? */ - sv->save_r1 = (vm_offset_t)((int)kss - KF_SIZE); - sv->save_srr1 = MSR_SUPERVISOR_INT_OFF; - 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; - thr_act->mact.ksp = 0; - } - - return; + sv = save_get(); /* cannot block */ + sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use */ + sv->save_hdr.save_act = thread; + sv->save_hdr.save_prev = (addr64_t)((uintptr_t)thread->machine.pcb); + thread->machine.pcb = sv; + + sv->save_srr0 = (unsigned int)thread_continue; + /* sv->save_r3 = ARG ? */ + sv->save_r1 = (vm_offset_t)((int)kss - KF_SIZE); + sv->save_srr1 = MSR_SUPERVISOR_INT_OFF; + 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 */ + *(CAST_DOWN(int *, sv->save_r1)) = 0; + + thread->machine.ksp = 0; } /* @@ -807,27 +574,29 @@ stack_attach(struct thread_shuttle *thread, */ void -stack_handoff(thread_t old, - thread_t new) +machine_stack_handoff( + thread_t old, + thread_t new) { vm_offset_t stack; pmap_t new_pmap; facility_context *fowner; - int my_cpu; - mapping *mp; + mapping_t *mp; struct per_proc_info *ppinfo; - assert(new->top_act); - assert(old->top_act); + assert(new); + assert(old); + + if (old == new) + panic("machine_stack_handoff"); - my_cpu = cpu_number(); - stack = stack_detach(old); + stack = machine_stack_detach(old); new->kernel_stack = stack; - if (stack == old->stack_privilege) { - assert(new->stack_privilege); - old->stack_privilege = new->stack_privilege; - new->stack_privilege = stack; + if (stack == old->reserved_stack) { + assert(new->reserved_stack); + old->reserved_stack = new->reserved_stack; + new->reserved_stack = stack; } ppinfo = getPerProc(); /* Get our processor block */ @@ -837,58 +606,60 @@ stack_handoff(thread_t old, if(real_ncpus > 1) { /* This is potentially slow, so only do when actually SMP */ 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? */ + if(fowner->facAct == old) { /* Is it for us? */ fpu_save(fowner); /* Yes, save it */ } } 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? */ + if(fowner->facAct == old) { /* 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); + if(old->machine.specFlags & runningVM) { /* Is the current thread running a VM? */ + old->machine.specFlags &= ~(userProtKey|FamVMmode); + old->machine.specFlags |= (ppinfo->spcFlags) & (userProtKey|FamVMmode); } + old->machine.specFlags &= ~OnProc; + new->machine.specFlags |= OnProc; 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); + old->reason, (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; + if(new->machine.specFlags & runningVM) { /* Is the new guy running a VM? */ + pmap_switch(new->machine.vmmCEntry->vmmPmap); /* Switch to the VM's pmap */ + ppinfo->VMMareaPhys = new->machine.vmmCEntry->vmmContextPhys; + ppinfo->VMMXAFlgs = new->machine.vmmCEntry->vmmXAFlgs; + ppinfo->FAMintercept = new->machine.vmmCEntry->vmmFAMintercept; } else { /* otherwise, we use the task's pmap */ - new_pmap = new->top_act->task->map->pmap; - if ((old->top_act->task->map->pmap != new_pmap) || (old->top_act->mact.specFlags & runningVM)) { + new_pmap = new->task->map->pmap; + if ((old->task->map->pmap != new_pmap) || (old->machine.specFlags & runningVM)) { pmap_switch(new_pmap); } } - thread_machine_set_current(new); - active_stacks[my_cpu] = new->kernel_stack; - ppinfo->Uassist = new->top_act->mact.cthread_self; + machine_set_current_thread(new); + ppinfo->Uassist = new->machine.cthread_self; - ppinfo->ppbbTaskEnv = new->top_act->mact.bbTaskEnv; - ppinfo->spcFlags = new->top_act->mact.specFlags; + ppinfo->ppbbTaskEnv = new->machine.bbTaskEnv; + ppinfo->spcFlags = new->machine.specFlags; - old->top_act->mact.cioSpace |= cioSwitchAway; /* Show we switched away from this guy */ - mp = (mapping *)&ppinfo->ppCIOmp; + old->machine.umwSpace |= umwSwitchAway; /* Show we switched away from this guy */ + mp = (mapping_t *)&ppinfo->ppUMWmp; mp->mpSpace = invalSpace; /* Since we can't handoff in the middle of copy in/out, just invalidate */ if (branch_tracing_enabled()) ppinfo->cpu_flags |= traceBE; - if(trcWork.traceMask) dbgTrace(0x12345678, (unsigned int)old->top_act, (unsigned int)new->top_act, 0); /* Cut trace entry if tracing */ + if(trcWork.traceMask) dbgTrace(0x9903, (unsigned int)old, (unsigned int)new, 0, 0); /* Cut trace entry if tracing */ return; } @@ -899,37 +670,22 @@ stack_handoff(thread_t old, */ void -call_continuation(void (*continuation)(void) ) -{ - - unsigned int *kss; - vm_offset_t tsp; - - assert(current_thread()->kernel_stack); - kss = (unsigned int *)STACK_IKS(current_thread()->kernel_stack); - assert(continuation); - - tsp = (vm_offset_t)((int)kss - KF_SIZE); - assert(tsp); - *((int *)tsp) = 0; - - Call_continuation(continuation, tsp); - - return; -} - -void -thread_swapin_mach_alloc(thread_t thread) +call_continuation( + thread_continue_t continuation, + void *parameter, + wait_result_t wresult) { - struct savearea *sv; + thread_t self = current_thread(); + unsigned int *kss; + vm_offset_t tsp; - assert(thread->top_act->mact.pcb == 0); + assert(self->kernel_stack); + kss = (unsigned int *)STACK_IKS(self->kernel_stack); + assert(continuation); - sv = save_alloc(); - assert(sv); - sv->save_hdr.save_prev = 0; /* Initialize back chain */ - sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use */ - sv->save_hdr.save_act = thread->top_act; /* Initialize owner */ - thread->top_act->mact.pcb = sv; + tsp = (vm_offset_t)((int)kss - KF_SIZE); + assert(tsp); + *((int *)tsp) = 0; + Call_continuation(continuation, parameter, wresult, tsp); }