X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..91447636331957f3d9b5ca5b508f07c526b0074d:/osfmk/ppc/status.c diff --git a/osfmk/ppc/status.c b/osfmk/ppc/status.c index 3f80e92ad..a0545f6fe 100644 --- a/osfmk/ppc/status.c +++ b/osfmk/ppc/status.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@ */ @@ -28,24 +25,25 @@ */ #include -#include #include #include #include +#include #include #include #include -#include +#include #include +//#include +typedef unsigned int fixpt_t; /* XXX not self contained */ +#include /* USRSTACK, etc. */ + #include extern unsigned int killprint; extern double FloatInit; extern unsigned long QNaNbarbarian[4]; -extern void thread_bootstrap_return(void); -extern struct Saveanchor saveanchor; -extern int real_ncpus; /* Number of actual CPUs */ #define USRSTACK 0xc0000000 @@ -55,7 +53,7 @@ thread_userstack( int, thread_state_t, unsigned int, - vm_offset_t *, + mach_vm_offset_t *, int * ); @@ -65,20 +63,22 @@ thread_entrypoint( int, thread_state_t, unsigned int, - vm_offset_t * + mach_vm_offset_t * ); unsigned int get_msr_exportmask(void); unsigned int get_msr_nbits(void); unsigned int get_msr_rbits(void); void ppc_checkthreadstate(void *, int); -void thread_set_child(thread_act_t child, int pid); -void thread_set_parent(thread_act_t parent, int pid); +void thread_set_child(thread_t child, int pid); +void thread_set_parent(thread_t parent, int pid); +void save_release(struct savearea *save); /* * Maps state flavor to number of words in the state: */ -unsigned int state_count[] = { +__private_extern__ +unsigned int _MachineStateCount[] = { /* FLAVOR_LIST */ 0, PPC_THREAD_STATE_COUNT, PPC_FLOAT_STATE_COUNT, @@ -95,11 +95,11 @@ unsigned int state_count[] = { */ kern_return_t -act_machine_get_state( - thread_act_t thr_act, - thread_flavor_t flavor, - thread_state_t tstate, - mach_msg_type_number_t *count) +machine_thread_get_state( + thread_t thread, + thread_flavor_t flavor, + thread_state_t tstate, + mach_msg_type_number_t *count) { register struct savearea *sv; /* Pointer to the context savearea */ @@ -116,7 +116,7 @@ act_machine_get_state( register struct ppc_float_state *fs; register struct ppc_vector_state *vs; - genuser = find_user_regs(thr_act); /* Find the current user general context for this activation */ + genuser = find_user_regs(thread); switch (flavor) { @@ -270,6 +270,8 @@ act_machine_get_state( xts->ctr = ((unsigned long long *)&FloatInit)[0]; xts->srr0 = ((unsigned long long *)&FloatInit)[0]; xts->srr1 = MSR_EXPORT_MASK_SET; + if(task_has_64BitAddr(thread->task)) + xts->srr1 |= (uint64_t)MASK32(MSR_SF) << 32; /* If 64-bit task, force 64-bit mode */ xts->vrsave = 0; /* VRSAVE register (Altivec only) */ } @@ -328,11 +330,11 @@ act_machine_get_state( return KERN_INVALID_ARGUMENT; } - fpu_save(thr_act->mact.curctx); /* Just in case it's live, save it */ + fpu_save(thread->machine.curctx); /* Just in case it's live, save it */ fs = (struct ppc_float_state *) tstate; /* Point to destination */ - fsv = find_user_fpu(thr_act); /* Get the user's fpu savearea */ + fsv = find_user_fpu(thread); /* Get the user's fpu savearea */ if(fsv) { /* See if we have any */ bcopy((char *)&fsv->save_fp0, (char *)fs, 32*8); /* 32 registers */ @@ -359,11 +361,11 @@ act_machine_get_state( return KERN_INVALID_ARGUMENT; } - vec_save(thr_act->mact.curctx); /* Just in case it's live, save it */ + vec_save(thread->machine.curctx); /* Just in case it's live, save it */ vs = (struct ppc_vector_state *) tstate; /* Point to destination */ - vsv = find_user_vec(thr_act); /* Find the vector savearea */ + vsv = find_user_vec(thread); /* Find the vector savearea */ if(vsv) { /* See if we have any */ @@ -411,6 +413,240 @@ act_machine_get_state( return KERN_INVALID_ARGUMENT; } } +/* Close cousin of machine_thread_get_state(). + * This function is currently incomplete since we don't really need vector + * or FP for the core dump (the save area can be accessed directly if the + * user is so inclined). Also the function name is something of a misnomer, + * see the comment above find_kern_regs(). + */ + +kern_return_t +machine_thread_get_kern_state( + thread_t thread, + thread_flavor_t flavor, + thread_state_t tstate, + mach_msg_type_number_t *count) +{ + + register struct savearea *sv; /* Pointer to the context savearea */ + savearea *genkern; + int i; + + register struct ppc_thread_state *ts; + register struct ppc_thread_state64 *xts; + register struct ppc_exception_state *es; + register struct ppc_exception_state64 *xes; + + genkern = find_kern_regs(thread); + + switch (flavor) { + + case THREAD_STATE_FLAVOR_LIST: + + if (*count < 6) { + return (KERN_INVALID_ARGUMENT); + } + + tstate[0] = PPC_THREAD_STATE; + tstate[1] = PPC_FLOAT_STATE; + tstate[2] = PPC_EXCEPTION_STATE; + tstate[3] = PPC_VECTOR_STATE; + tstate[4] = PPC_THREAD_STATE64; + tstate[5] = PPC_EXCEPTION_STATE64; + *count = 6; + + return KERN_SUCCESS; + + case PPC_THREAD_STATE: + + if (*count < PPC_THREAD_STATE_COUNT) { /* Is the count ok? */ + return KERN_INVALID_ARGUMENT; + } + + ts = (struct ppc_thread_state *) tstate; + + sv = genkern; /* Copy this over */ + + if(sv) { /* Is there a save area yet? */ + ts->r0 = (unsigned int)sv->save_r0; + ts->r1 = (unsigned int)sv->save_r1; + ts->r2 = (unsigned int)sv->save_r2; + ts->r3 = (unsigned int)sv->save_r3; + ts->r4 = (unsigned int)sv->save_r4; + ts->r5 = (unsigned int)sv->save_r5; + ts->r6 = (unsigned int)sv->save_r6; + ts->r7 = (unsigned int)sv->save_r7; + ts->r8 = (unsigned int)sv->save_r8; + ts->r9 = (unsigned int)sv->save_r9; + ts->r10 = (unsigned int)sv->save_r10; + ts->r11 = (unsigned int)sv->save_r11; + ts->r12 = (unsigned int)sv->save_r12; + ts->r13 = (unsigned int)sv->save_r13; + ts->r14 = (unsigned int)sv->save_r14; + ts->r15 = (unsigned int)sv->save_r15; + ts->r16 = (unsigned int)sv->save_r16; + ts->r17 = (unsigned int)sv->save_r17; + ts->r18 = (unsigned int)sv->save_r18; + ts->r19 = (unsigned int)sv->save_r19; + ts->r20 = (unsigned int)sv->save_r20; + ts->r21 = (unsigned int)sv->save_r21; + ts->r22 = (unsigned int)sv->save_r22; + ts->r23 = (unsigned int)sv->save_r23; + ts->r24 = (unsigned int)sv->save_r24; + ts->r25 = (unsigned int)sv->save_r25; + ts->r26 = (unsigned int)sv->save_r26; + ts->r27 = (unsigned int)sv->save_r27; + ts->r28 = (unsigned int)sv->save_r28; + ts->r29 = (unsigned int)sv->save_r29; + ts->r30 = (unsigned int)sv->save_r30; + ts->r31 = (unsigned int)sv->save_r31; + ts->cr = (unsigned int)sv->save_cr; + ts->xer = (unsigned int)sv->save_xer; + ts->lr = (unsigned int)sv->save_lr; + ts->ctr = (unsigned int)sv->save_ctr; + ts->srr0 = (unsigned int)sv->save_srr0; + ts->srr1 = (unsigned int)sv->save_srr1; + ts->mq = 0; /* MQ register (601 only) */ + ts->vrsave = (unsigned int)sv->save_vrsave; /* VRSAVE register (Altivec only) */ + } + else { /* No state yet. Save seemingly random values. */ + + for(i=0; i < 32; i+=2) { /* Fill up with defaults */ + ((unsigned int *)&ts->r0)[i] = ((unsigned int *)&FloatInit)[0]; + ((unsigned int *)&ts->r0)[i+1] = ((unsigned int *)&FloatInit)[1]; + } + ts->cr = 0; + ts->xer = 0; + ts->lr = ((unsigned int *)&FloatInit)[0]; + ts->ctr = ((unsigned int *)&FloatInit)[1]; + ts->srr0 = ((unsigned int *)&FloatInit)[0]; + ts->srr1 = MSR_EXPORT_MASK_SET; + ts->mq = 0; + ts->vrsave = 0; /* VRSAVE register (Altivec only) */ + } + + *count = PPC_THREAD_STATE_COUNT; /* Pass back the amount we actually copied */ + return KERN_SUCCESS; + + + case PPC_THREAD_STATE64: + + if (*count < PPC_THREAD_STATE64_COUNT) { /* Is the count ok? */ + return KERN_INVALID_ARGUMENT; + } + + xts = (struct ppc_thread_state64 *) tstate; + + sv = genkern; /* Copy this over */ + + if(sv) { /* Is there a save area yet? */ + xts->r0 = sv->save_r0; + xts->r1 = sv->save_r1; + xts->r2 = sv->save_r2; + xts->r3 = sv->save_r3; + xts->r4 = sv->save_r4; + xts->r5 = sv->save_r5; + xts->r6 = sv->save_r6; + xts->r7 = sv->save_r7; + xts->r8 = sv->save_r8; + xts->r9 = sv->save_r9; + xts->r10 = sv->save_r10; + xts->r11 = sv->save_r11; + xts->r12 = sv->save_r12; + xts->r13 = sv->save_r13; + xts->r14 = sv->save_r14; + xts->r15 = sv->save_r15; + xts->r16 = sv->save_r16; + xts->r17 = sv->save_r17; + xts->r18 = sv->save_r18; + xts->r19 = sv->save_r19; + xts->r20 = sv->save_r20; + xts->r21 = sv->save_r21; + xts->r22 = sv->save_r22; + xts->r23 = sv->save_r23; + xts->r24 = sv->save_r24; + xts->r25 = sv->save_r25; + xts->r26 = sv->save_r26; + xts->r27 = sv->save_r27; + xts->r28 = sv->save_r28; + xts->r29 = sv->save_r29; + xts->r30 = sv->save_r30; + xts->r31 = sv->save_r31; + xts->cr = sv->save_cr; + xts->xer = sv->save_xer; + xts->lr = sv->save_lr; + xts->ctr = sv->save_ctr; + xts->srr0 = sv->save_srr0; + xts->srr1 = sv->save_srr1; + xts->vrsave = sv->save_vrsave; /* VRSAVE register (Altivec only) */ + } + else { /* No user state yet. Save seemingly random values. */ + + for(i=0; i < 32; i++) { /* Fill up with defaults */ + ((unsigned long long *)&xts->r0)[i] = ((unsigned long long *)&FloatInit)[0]; + } + xts->cr = 0; + xts->xer = 0; + xts->lr = ((unsigned long long *)&FloatInit)[0]; + xts->ctr = ((unsigned long long *)&FloatInit)[0]; + xts->srr0 = ((unsigned long long *)&FloatInit)[0]; + xts->srr1 = MSR_EXPORT_MASK_SET; + xts->vrsave = 0; /* VRSAVE register (Altivec only) */ + } + + *count = PPC_THREAD_STATE64_COUNT; /* Pass back the amount we actually copied */ + return KERN_SUCCESS; + + case PPC_EXCEPTION_STATE: + + if (*count < PPC_EXCEPTION_STATE_COUNT) { + return KERN_INVALID_ARGUMENT; + } + + es = (struct ppc_exception_state *) tstate; + sv = genkern; /* Copy this over */ + + if(sv) { /* See if valid state yet */ + es->dar = (unsigned int)sv->save_dar; + es->dsisr = sv->save_dsisr; + es->exception = sv->save_exception; + } + else { /* Nope, not yet */ + es->dar = 0; + es->dsisr = 0; + es->exception = ((unsigned int *)&FloatInit)[0]; + } + + *count = PPC_EXCEPTION_STATE_COUNT; + return KERN_SUCCESS; + + case PPC_EXCEPTION_STATE64: + + if (*count < PPC_EXCEPTION_STATE64_COUNT) { + return KERN_INVALID_ARGUMENT; + } + + xes = (struct ppc_exception_state64 *) tstate; + sv = genkern; /* Copy this over */ + + if(sv) { /* See if valid state yet */ + xes->dar = sv->save_dar; + xes->dsisr = sv->save_dsisr; + xes->exception = sv->save_exception; + } + else { /* Nope, not yet */ + xes->dar = 0; + xes->dsisr = 0; + xes->exception = ((unsigned int *)&FloatInit)[0]; + } + + *count = PPC_EXCEPTION_STATE64_COUNT; + return KERN_SUCCESS; + + default: + return KERN_INVALID_ARGUMENT; + } +} /* @@ -419,18 +655,18 @@ act_machine_get_state( * Set the status of the specified thread. */ kern_return_t -act_machine_set_state( - thread_act_t thr_act, - thread_flavor_t flavor, - thread_state_t tstate, - mach_msg_type_number_t count) +machine_thread_set_state( + thread_t thread, + thread_flavor_t flavor, + thread_state_t tstate, + mach_msg_type_number_t count) { - savearea *sv, *genuser; + savearea *genuser; savearea_fpu *fsv, *fsvn, *fsvo; savearea_vec *vsv, *vsvn, *vsvo; unsigned int i; - int clgn; + unsigned int clgn; register struct ppc_thread_state *ts; register struct ppc_thread_state64 *xts; register struct ppc_exception_state *es; @@ -438,9 +674,7 @@ act_machine_set_state( register struct ppc_float_state *fs; register struct ppc_vector_state *vs; - int kernel_act = thr_act->kernel_loading || thr_act->kernel_loaded; - -// dbgTrace((unsigned int)thr_act, (unsigned int)sv, flavor); /* (TEST/DEBUG) */ +// dbgTrace((unsigned int)thr_act, (unsigned int)0 /*sv: was never set*/, flavor); /* (TEST/DEBUG) */ clgn = count; /* Get the count */ @@ -494,7 +728,7 @@ act_machine_set_state( return KERN_INVALID_ARGUMENT; } - genuser = get_user_regs(thr_act); /* Find or allocate and initialize one */ + genuser = get_user_regs(thread); /* Find or allocate and initialize one */ switch (flavor) { @@ -544,9 +778,14 @@ act_machine_set_state( genuser->save_srr1 = MSR_PREPARE_FOR_IMPORT(genuser->save_srr1, ts->srr1); /* Set the bits we can change */ - if(!kernel_act) genuser->save_srr1 |= MSR_EXPORT_MASK_SET; /* If not a kernel guy, force the magic bits on */ + genuser->save_srr1 |= MSR_EXPORT_MASK_SET; genuser->save_srr1 &= ~(MASK(MSR_FP) | MASK(MSR_VEC)); /* Make sure we don't enable the floating point unit */ + + if(task_has_64BitAddr(thread->task)) + genuser->save_srr1 |= (uint64_t)MASK32(MSR_SF) << 32; /* If 64-bit task, force 64-bit mode */ + else + genuser->save_srr1 &= ~((uint64_t)MASK32(MSR_SF) << 32); /* else 32-bit mode */ return KERN_SUCCESS; @@ -597,9 +836,14 @@ act_machine_set_state( genuser->save_srr1 = MSR_PREPARE_FOR_IMPORT(genuser->save_srr1, xts->srr1); /* Set the bits we can change */ - if(!kernel_act) genuser->save_srr1 |= MSR_EXPORT_MASK_SET; /* If not a kernel guy, force the magic bits on */ + genuser->save_srr1 |= MSR_EXPORT_MASK_SET; genuser->save_srr1 &= ~(MASK(MSR_FP) | MASK(MSR_VEC)); /* Make sure we don't enable the floating point unit */ + + if(task_has_64BitAddr(thread->task)) + genuser->save_srr1 |= (uint64_t)MASK32(MSR_SF) << 32; /* If 64-bit task, force 64-bit mode */ + else + genuser->save_srr1 &= ~((uint64_t)MASK32(MSR_SF) << 32); /* else 32-bit mode */ return KERN_SUCCESS; @@ -630,28 +874,28 @@ act_machine_set_state( case PPC_FLOAT_STATE: - toss_live_fpu(thr_act->mact.curctx); /* Toss my floating point if live anywhere */ + toss_live_fpu(thread->machine.curctx); /* Toss my floating point if live anywhere */ - fsv = find_user_fpu(thr_act); /* Get the user's floating point context */ + fsv = find_user_fpu(thread); /* Get the user's floating point context */ if(!fsv) { /* Do we have one yet? */ fsv = (savearea_fpu *)save_alloc(); /* If we still don't have one, get a new one */ fsv->save_hdr.save_flags = (fsv->save_hdr.save_flags & ~SAVtype) | (SAVfloat << SAVtypeshft); /* Mark as in use as float */ - fsv->save_hdr.save_act = thr_act; /* Point to the activation */ + fsv->save_hdr.save_act = thread; fsv->save_hdr.save_prev = 0; /* Mark no more */ fsv->save_hdr.save_level = 0; /* Mark user state */ - if(!thr_act->mact.curctx->FPUsave) thr_act->mact.curctx->FPUsave = fsv; /* If no floating point, chain us first */ + if(!thread->machine.curctx->FPUsave) thread->machine.curctx->FPUsave = fsv; /* If no floating point, chain us first */ else { - fsvn = fsvo = thr_act->mact.curctx->FPUsave; /* Remember first one */ + fsvn = fsvo = thread->machine.curctx->FPUsave; /* Remember first one */ while (fsvn) { /* Go until we hit the end */ fsvo = fsvn; /* Remember the previous one */ - fsvn = (savearea_fpu *)fsvo->save_hdr.save_prev; /* Skip on to the next */ + fsvn = CAST_DOWN(savearea_fpu *, fsvo->save_hdr.save_prev); /* Skip on to the next */ } - fsvo->save_hdr.save_prev = (addr64_t)fsv; /* Queue us on in */ + fsvo->save_hdr.save_prev = (addr64_t)((uintptr_t)fsv); /* Queue us on in */ } } @@ -668,28 +912,28 @@ act_machine_set_state( case PPC_VECTOR_STATE: - toss_live_vec(thr_act->mact.curctx); /* Toss my vector if live anywhere */ + toss_live_vec(thread->machine.curctx); /* Toss my vector if live anywhere */ - vsv = find_user_vec(thr_act); /* Get the user's vector context */ + vsv = find_user_vec(thread); /* Get the user's vector context */ if(!vsv) { /* Do we have one yet? */ vsv = (savearea_vec *)save_alloc(); /* If we still don't have one, get a new one */ vsv->save_hdr.save_flags = (vsv->save_hdr.save_flags & ~SAVtype) | (SAVvector << SAVtypeshft); /* Mark as in use as vector */ - vsv->save_hdr.save_act = thr_act; /* Point to the activation */ + vsv->save_hdr.save_act = thread; vsv->save_hdr.save_prev = 0; /* Mark no more */ vsv->save_hdr.save_level = 0; /* Mark user state */ - if(!thr_act->mact.curctx->VMXsave) thr_act->mact.curctx->VMXsave = vsv; /* If no vector, chain us first */ + if(!thread->machine.curctx->VMXsave) thread->machine.curctx->VMXsave = vsv; /* If no vector, chain us first */ else { - vsvn = vsvo = thr_act->mact.curctx->VMXsave; /* Remember first one */ + vsvn = vsvo = thread->machine.curctx->VMXsave; /* Remember first one */ while (vsvn) { /* Go until we hit the end */ vsvo = vsvn; /* Remember the previous one */ - vsvn = (savearea_vec *)vsvo->save_hdr.save_prev; /* Skip on to the next */ + vsvn = CAST_DOWN(savearea_vec *, vsvo->save_hdr.save_prev); /* Skip on to the next */ } - vsvo->save_hdr.save_prev = (addr64_t)vsv; /* Queue us on in */ + vsvo->save_hdr.save_prev = (addr64_t)((uintptr_t)vsv); /* Queue us on in */ } } @@ -710,6 +954,33 @@ act_machine_set_state( } } + +/* + * This is where registers that are not normally specified by the mach-o + * file on an execve should be nullified, perhaps to avoid a covert channel. + * We've never bothered to clear FPRs or VRs, but it is important to clear + * the FPSCR, which is kept in the general state but not set by the general + * flavor (ie, PPC_THREAD_STATE or PPC_THREAD_STATE64.) + */ +kern_return_t +machine_thread_state_initialize( + thread_t thread) +{ + savearea *sv; + + sv = get_user_regs(thread); /* Find or allocate and initialize one */ + + 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 */ + + return KERN_SUCCESS; +} + + /* * Duplicates the context of one thread into a new one. * The new thread is assumed to be new and have no user state contexts except maybe a general one. @@ -719,66 +990,67 @@ act_machine_set_state( * eliminate any floating point or vector kernel contexts and carry across the user state ones. */ -void act_thread_dup(thread_act_t old, thread_act_t new) { - +kern_return_t +machine_thread_dup( + thread_t self, + thread_t target) +{ savearea *sv, *osv; savearea_fpu *fsv, *fsvn; savearea_vec *vsv, *vsvn; - unsigned int spc, i, *srs; - fpu_save(old->mact.curctx); /* Make certain floating point state is all saved */ - vec_save(old->mact.curctx); /* Make certain the vector state is all saved */ + fpu_save(self->machine.curctx); /* Make certain floating point state is all saved */ + vec_save(self->machine.curctx); /* Make certain the vector state is all saved */ - sv = get_user_regs(new); /* Allocate and initialze context in the new activation */ + sv = get_user_regs(target); /* Allocate and initialze context in the new activation */ - osv = find_user_regs(old); /* Find the original context */ - if(!osv) { - panic("act_thread_dup: old activation (%08X) has no general user context\n", old); - } + osv = find_user_regs(self); /* Find the original context */ + if(!osv) + return (KERN_FAILURE); bcopy((char *)((unsigned int)osv + sizeof(savearea_comm)), /* Copy everything but the headers */ (char *)((unsigned int)sv + sizeof(savearea_comm)), sizeof(struct savearea) - sizeof(savearea_comm)); - sv->save_srr1 &= ~(MASK(MSR_FP) | MASK(MSR_VEC)); /* Make certain that floating point and vector are turned off */ + sv->save_srr1 &= (uint64_t)(~(MASK(MSR_FP) | MASK(MSR_VEC))); /* Make certain that floating point and vector are turned off */ - fsv = find_user_fpu(old); /* Get any user floating point */ + fsv = find_user_fpu(self); /* Get any user floating point */ - new->mact.curctx->FPUsave = 0; /* Assume no floating point */ + target->machine.curctx->FPUsave = 0; /* Assume no floating point */ if(fsv) { /* Did we find one? */ fsvn = (savearea_fpu *)save_alloc(); /* If we still don't have one, get a new one */ fsvn->save_hdr.save_flags = (fsvn->save_hdr.save_flags & ~SAVtype) | (SAVfloat << SAVtypeshft); /* Mark as in use as float */ - fsvn->save_hdr.save_act = new; /* Point to the activation */ + fsvn->save_hdr.save_act = target; fsvn->save_hdr.save_prev = 0; /* Mark no more */ fsvn->save_hdr.save_level = 0; /* Mark user state */ - new->mact.curctx->FPUsave = fsvn; /* Chain in the floating point */ + target->machine.curctx->FPUsave = fsvn; /* Chain in the floating point */ bcopy((char *)((unsigned int)fsv + sizeof(savearea_comm)), /* Copy everything but the headers */ (char *)((unsigned int)fsvn + sizeof(savearea_comm)), sizeof(struct savearea) - sizeof(savearea_comm)); } - vsv = find_user_vec(old); /* Get any user vector */ + vsv = find_user_vec(self); /* Get any user vector */ - new->mact.curctx->VMXsave = 0; /* Assume no vector */ + target->machine.curctx->VMXsave = 0; /* Assume no vector */ if(vsv) { /* Did we find one? */ vsvn = (savearea_vec *)save_alloc(); /* If we still don't have one, get a new one */ vsvn->save_hdr.save_flags = (vsvn->save_hdr.save_flags & ~SAVtype) | (SAVvector << SAVtypeshft); /* Mark as in use as float */ - vsvn->save_hdr.save_act = new; /* Point to the activation */ + vsvn->save_hdr.save_act = target; vsvn->save_hdr.save_prev = 0; /* Mark no more */ vsvn->save_hdr.save_level = 0; /* Mark user state */ - new->mact.curctx->VMXsave = vsvn; /* Chain in the floating point */ + target->machine.curctx->VMXsave = vsvn; /* Chain in the floating point */ bcopy((char *)((unsigned int)vsv + sizeof(savearea_comm)), /* Copy everything but the headers */ (char *)((unsigned int)vsvn + sizeof(savearea_comm)), sizeof(struct savearea) - sizeof(savearea_comm)); } - return; /* Bye bye... */ + return (KERN_SUCCESS); } /* @@ -788,33 +1060,37 @@ void act_thread_dup(thread_act_t old, thread_act_t new) { * We only set initial values if there was no context found. */ -savearea *get_user_regs(thread_act_t act) { - +savearea * +get_user_regs( + thread_t thread) +{ savearea *sv, *osv; - unsigned int spc, i, *srs; + unsigned int i; + + if (thread->machine.upcb) + return thread->machine.upcb; - sv = act->mact.pcb; /* Get the top savearea on the stack */ + sv = thread->machine.pcb; /* Get the top savearea on the stack */ osv = 0; /* Set no user savearea yet */ while(sv) { /* Find the user context */ - if(sv->save_srr1 & MASK(MSR_PR)) return sv; /* We found a user state context... */ - osv = sv; /* Save the last one */ - sv = (savearea *)sv->save_hdr.save_prev; /* Get the previous context */ + sv = CAST_DOWN(savearea *, sv->save_hdr.save_prev); /* Get the previous context */ } sv = save_alloc(); /* Get one */ sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use as general */ - sv->save_hdr.save_act = act; /* Point to the activation */ + sv->save_hdr.save_act = thread; sv->save_hdr.save_prev = 0; /* Mark no more */ sv->save_hdr.save_level = 0; /* Mark user state */ if(osv) { /* Did we already have one? */ - osv->save_hdr.save_prev = (addr64_t)sv; /* Chain us on the end */ + osv->save_hdr.save_prev = (addr64_t)((uintptr_t)sv); /* Chain us on the end */ } else { /* We are the first */ - act->mact.pcb = sv; /* Put it there */ + thread->machine.pcb = sv; /* Put it there */ } + thread->machine.upcb = sv; /* Set user pcb */ for(i=0; i < 32; i+=2) { /* Fill up with defaults */ ((unsigned int *)&sv->save_r0)[i] = ((unsigned int *)&FloatInit)[0]; @@ -826,6 +1102,8 @@ savearea *get_user_regs(thread_act_t act) { sv->save_ctr = (uint64_t)FloatInit; sv->save_srr0 = (uint64_t)FloatInit; sv->save_srr1 = (uint64_t)MSR_EXPORT_MASK_SET; + if(task_has_64BitAddr(thread->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 */ @@ -843,20 +1121,21 @@ savearea *get_user_regs(thread_act_t act) { * we just return a 0. */ -savearea *find_user_regs(thread_act_t act) { - - savearea *sv; +savearea * +find_user_regs( + thread_t thread) +{ + return thread->machine.upcb; +} - sv = act->mact.pcb; /* Get the top savearea on the stack */ - - while(sv) { /* Find the user context */ - if(sv->save_srr1 & MASK(MSR_PR)) { /* Are we looking at the user context? */ - break; /* Outta here */ - } - sv = (savearea *)sv->save_hdr.save_prev; /* Get the previous context */ - } - - return sv; /* Bye bye... */ +/* The name of this call is something of a misnomer since the mact.pcb can + * contain chained saveareas, but it will do for now.. + */ +savearea * +find_kern_regs( + thread_t thread) +{ + return thread->machine.pcb; } /* @@ -864,16 +1143,21 @@ savearea *find_user_regs(thread_act_t act) { * we just return a 0. */ -savearea_fpu *find_user_fpu(thread_act_t act) { - +savearea_fpu * +find_user_fpu( + thread_t thread) +{ savearea_fpu *fsv; + boolean_t intr; - fsv = act->mact.curctx->FPUsave; /* Get the start of the floating point chain */ + intr = ml_set_interrupts_enabled(FALSE); + fsv = thread->machine.curctx->FPUsave; /* Get the start of the floating point chain */ while(fsv) { /* Look until the end or we find it */ if(!(fsv->save_hdr.save_level)) break; /* Is the the user state stuff? (the level is 0 if so) */ - fsv = (savearea_fpu *)fsv->save_hdr.save_prev; /* Try the previous one */ + fsv = CAST_DOWN(savearea_fpu *, fsv->save_hdr.save_prev); /* Try the previous one */ } + (void) ml_set_interrupts_enabled(intr); return fsv; /* Bye bye... */ } @@ -883,16 +1167,45 @@ savearea_fpu *find_user_fpu(thread_act_t act) { * we just return a 0. */ -savearea_vec *find_user_vec(thread_act_t act) { +savearea_vec * +find_user_vec( + thread_t thread) +{ + savearea_vec *vsv; + boolean_t intr; + + intr = ml_set_interrupts_enabled(FALSE); + vsv = thread->machine.curctx->VMXsave; /* Get the start of the vector chain */ + + while(vsv) { /* Look until the end or we find it */ + if(!(vsv->save_hdr.save_level)) break; /* Is the the user state stuff? (the level is 0 if so) */ + vsv = CAST_DOWN(savearea_vec *, vsv->save_hdr.save_prev); /* Try the previous one */ + } + (void) ml_set_interrupts_enabled(intr); + + return vsv; /* Bye bye... */ +} +/* + * Find the user state vector context for the current thread. If there is no user state context, + * we just return a 0. + */ + +savearea_vec *find_user_vec_curr(void) { savearea_vec *vsv; + thread_t thread = current_thread(); + boolean_t intr; + + vec_save(thread->machine.curctx); /* Force save if live */ - vsv = act->mact.curctx->VMXsave; /* Get the start of the vector chain */ + intr = ml_set_interrupts_enabled(FALSE); + vsv = thread->machine.curctx->VMXsave; /* Get the start of the vector chain */ while(vsv) { /* Look until the end or we find it */ if(!(vsv->save_hdr.save_level)) break; /* Is the the user state stuff? (the level is 0 if so) */ - vsv = (savearea_vec *)vsv->save_hdr.save_prev; /* Try the previous one */ + vsv = CAST_DOWN(savearea_vec *, vsv->save_hdr.save_prev); /* Try the previous one */ } + (void) ml_set_interrupts_enabled(intr); return vsv; /* Bye bye... */ } @@ -905,26 +1218,23 @@ savearea_vec *find_user_vec(thread_act_t act) { */ kern_return_t thread_userstack( - thread_t thread, + __unused thread_t thread, int flavor, thread_state_t tstate, unsigned int count, - vm_offset_t *user_stack, + mach_vm_offset_t *user_stack, int *customstack ) { - struct ppc_thread_state *state; - /* * Set a default. */ - if (*user_stack == 0) - *user_stack = USRSTACK; - if (customstack) - *customstack = 0; switch (flavor) { case PPC_THREAD_STATE: + { + struct ppc_thread_state *state; + if (count < PPC_THREAD_STATE_COUNT) return (KERN_INVALID_ARGUMENT); @@ -933,12 +1243,42 @@ thread_userstack( /* * If a valid user stack is specified, use it. */ - *user_stack = state->r1 ? state->r1: USRSTACK; - - if (customstack && state->r1) + if (state->r1) { + *user_stack = CAST_USER_ADDR_T(state->r1); + if (customstack) *customstack = 1; + } else { + *user_stack = CAST_USER_ADDR_T(USRSTACK); + if (customstack) + *customstack = 0; + } + } + break; + + case PPC_THREAD_STATE64: + { + struct ppc_thread_state64 *state64; + if (count < PPC_THREAD_STATE64_COUNT) + return (KERN_INVALID_ARGUMENT); + + state64 = (struct ppc_thread_state64 *)tstate; + + /* + * If a valid user stack is specified, use it. + */ + if (state64->r1 != MACH_VM_MIN_ADDRESS) { + *user_stack = state64->r1; + if (customstack) + *customstack = 1; + } else { + *user_stack = USRSTACK64; + if (customstack) + *customstack = 0; + } + } break; + default : return (KERN_INVALID_ARGUMENT); } @@ -953,13 +1293,14 @@ thread_userstack( * Sets the user stack pointer into the machine * dependent thread state info. */ -void thread_setuserstack(struct thread_activation *act, unsigned int user_stack) +void +thread_setuserstack(thread_t thread, mach_vm_address_t user_stack) { savearea *sv; - sv = get_user_regs(act); /* Get the user state registers */ + sv = get_user_regs(thread); /* Get the user state registers */ - sv->save_r1 = (uint64_t)user_stack; + sv->save_r1 = user_stack; return; } @@ -968,17 +1309,18 @@ void thread_setuserstack(struct thread_activation *act, unsigned int user_stack) * thread_adjuserstack: * * Returns the adjusted user stack pointer from the machine - * dependent thread state info. + * dependent thread state info. Usef for small (<2G) deltas. */ -unsigned int thread_adjuserstack(struct thread_activation *act, int adjust) +uint64_t +thread_adjuserstack(thread_t thread, int adjust) { savearea *sv; - sv = get_user_regs(act); /* Get the user state registers */ + sv = get_user_regs(thread); /* Get the user state registers */ - sv->save_r1 += adjust; /* Adjust the stack */ + sv->save_r1 += adjust; /* Adjust the stack */ - return (unsigned int)sv->save_r1; /* Return the adjusted stack */ + return sv->save_r1; /* Return the adjusted stack */ } @@ -989,37 +1331,41 @@ unsigned int thread_adjuserstack(struct thread_activation *act, int adjust) * dependent thread state info. */ -void thread_setentrypoint(struct thread_activation *act, unsigned int entry) +void +thread_setentrypoint(thread_t thread, uint64_t entry) { savearea *sv; - sv = get_user_regs(act); /* Get the user state registers */ + sv = get_user_regs(thread); /* Get the user state registers */ - sv->save_srr0 = (uint64_t)entry; + sv->save_srr0 = entry; return; } kern_return_t thread_entrypoint( - thread_t thread, + __unused thread_t thread, int flavor, thread_state_t tstate, unsigned int count, - vm_offset_t *entry_point + mach_vm_offset_t *entry_point ) { - struct ppc_thread_state *state; - +#if 0 + /* Silly code: "if *entry_point is 0, make it 0" */ /* * Set a default. */ - if (*entry_point == 0) - *entry_point = VM_MIN_ADDRESS; + if (*entry_point == 0ULL) + *entry_point = MACH_VM_MIN_ADDRESS; +#endif switch (flavor) { - case PPC_THREAD_STATE: + { + struct ppc_thread_state *state; + if (count < PPC_THREAD_STATE_COUNT) return (KERN_INVALID_ARGUMENT); @@ -1028,8 +1374,34 @@ thread_entrypoint( /* * If a valid entry point is specified, use it. */ - *entry_point = state->srr0 ? state->srr0: VM_MIN_ADDRESS; + if (state->srr0) { + *entry_point = CAST_USER_ADDR_T(state->srr0); + } else { + *entry_point = CAST_USER_ADDR_T(VM_MIN_ADDRESS); + } + } break; + + case PPC_THREAD_STATE64: + { + struct ppc_thread_state64 *state64; + + if (count < PPC_THREAD_STATE_COUNT) + return (KERN_INVALID_ARGUMENT); + + state64 = (struct ppc_thread_state64 *)tstate; + + /* + * If a valid entry point is specified, use it. + */ + if (state64->srr0) { + *entry_point = state64->srr0; + } else { + *entry_point = MACH_VM_MIN_ADDRESS; + } + } + break; + default: return (KERN_INVALID_ARGUMENT); } @@ -1069,7 +1441,10 @@ void ppc_checkthreadstate(void * tsptr, int flavor) return; } -void thread_set_child(thread_act_t child, int pid) +void +thread_set_child( + thread_t child, + int pid) { struct savearea *child_state; @@ -1078,7 +1453,10 @@ void thread_set_child(thread_act_t child, int pid) child_state->save_r3 = (uint_t)pid; child_state->save_r4 = 1ULL; } -void thread_set_parent(thread_act_t parent, int pid) +void +thread_set_parent( + thread_t parent, + int pid) { struct savearea *parent_state; @@ -1103,24 +1481,23 @@ void *act_thread_csave(void) { savearea *sv, *osv; savearea_fpu *fsv, *ofsv; savearea_vec *vsv, *ovsv; - unsigned int spc, i, *srs; - thread_act_t act; + thread_t thread; - act = current_act(); /* Find ourselves */ + thread = current_thread(); - fpu_save(act->mact.curctx); /* Make certain floating point state is all saved */ - vec_save(act->mact.curctx); /* Make certain the vector state is all saved */ + fpu_save(thread->machine.curctx); /* Make certain floating point state is all saved */ + vec_save(thread->machine.curctx); /* Make certain the vector state is all saved */ - osv = find_user_regs(act); /* Get our savearea */ + osv = find_user_regs(thread); /* Get our savearea */ if(!osv) { - panic("act_thread_csave: attempting to preserve the context of an activation with none (%08X)\n", act); + panic("act_thread_csave: attempting to preserve the context of an activation with none (%08X)\n", thread); } sv = save_alloc(); /* Get a fresh save area to save into */ sv->save_hdr.save_flags = (sv->save_hdr.save_flags & ~SAVtype) | (SAVgeneral << SAVtypeshft); /* Mark as in use as general */ - sv->save_hdr.save_act = act; /* Point to the activation */ + sv->save_hdr.save_act = thread; sv->save_hdr.save_prev = 0; /* Mark no more */ sv->save_hdr.save_level = 0; /* Mark user state */ @@ -1129,46 +1506,46 @@ void *act_thread_csave(void) { (char *)((unsigned int)sv + sizeof(savearea_comm)), sizeof(struct savearea) - sizeof(savearea_comm)); - sv->save_srr1 &= ~(MASK(MSR_FP) | MASK(MSR_VEC)); /* Make certain that floating point and vector are turned off */ + sv->save_srr1 &= (uint64_t)(~(MASK(MSR_FP) | MASK(MSR_VEC))); /* Make certain that floating point and vector are turned off */ sv->save_hdr.save_misc2 = 0xDEBB1ED0; /* Eye catcher for debug */ sv->save_hdr.save_misc3 = 0xE5DA11A5; /* Eye catcher for debug */ - ofsv = find_user_fpu(act); /* Get any user floating point */ + ofsv = find_user_fpu(thread); /* Get any user floating point */ sv->save_hdr.save_misc0 = 0; /* Assume no floating point */ if(ofsv) { /* Did we find one? */ fsv = (savearea_fpu *)save_alloc(); /* If we still don't have one, get a new one */ fsv->save_hdr.save_flags = (fsv->save_hdr.save_flags & ~SAVtype) | (SAVfloat << SAVtypeshft); /* Mark as in use as float */ - fsv->save_hdr.save_act = act; /* Point to the activation */ + fsv->save_hdr.save_act = thread; fsv->save_hdr.save_prev = 0; /* Mark no more */ fsv->save_hdr.save_level = 0; /* Mark user state */ fsv->save_hdr.save_misc2 = 0xDEBB1ED0; /* Eye catcher for debug */ fsv->save_hdr.save_misc3 = 0xE5DA11A5; /* Eye catcher for debug */ - sv->save_hdr.save_misc0 = (uint64_t)fsv; /* Remember this one */ + sv->save_hdr.save_misc0 = (uint64_t)((uintptr_t)fsv); /* Remember this one */ bcopy((char *)((unsigned int)ofsv + sizeof(savearea_comm)), /* Copy everything but the headers */ (char *)((unsigned int)fsv + sizeof(savearea_comm)), sizeof(struct savearea) - sizeof(savearea_comm)); } - ovsv = find_user_vec(act); /* Get any user vector */ + ovsv = find_user_vec(thread); /* Get any user vector */ sv->save_hdr.save_misc1 = 0; /* Assume no vector */ if(ovsv) { /* Did we find one? */ vsv = (savearea_vec *)save_alloc(); /* If we still don't have one, get a new one */ vsv->save_hdr.save_flags = (vsv->save_hdr.save_flags & ~SAVtype) | (SAVvector << SAVtypeshft); /* Mark as in use as float */ - vsv->save_hdr.save_act = act; /* Point to the activation */ + vsv->save_hdr.save_act = thread; vsv->save_hdr.save_prev = 0; /* Mark no more */ vsv->save_hdr.save_level = 0; /* Mark user state */ vsv->save_hdr.save_misc2 = 0xDEBB1ED0; /* Eye catcher for debug */ vsv->save_hdr.save_misc3 = 0xE5DA11A5; /* Eye catcher for debug */ - sv->save_hdr.save_misc1 = (uint64_t)vsv; /* Chain in the floating point */ + sv->save_hdr.save_misc1 = (uint64_t)((uintptr_t)vsv); /* Chain in the floating point */ bcopy((char *)((unsigned int)ovsv + sizeof(savearea_comm)), /* Copy everything but the headers */ (char *)((unsigned int)vsv + sizeof(savearea_comm)), @@ -1196,13 +1573,13 @@ void act_thread_catt(void *ctx) { savearea *sv, *osv, *psv; savearea_fpu *fsv, *ofsv, *pfsv; savearea_vec *vsv, *ovsv, *pvsv; - unsigned int spc, i, *srs; - thread_act_t act; + unsigned int spc; + thread_t thread; sv = (savearea *)ctx; /* Make this easier for C */ - fsv = (savearea_fpu *)sv->save_hdr.save_misc0; /* Get a possible floating point savearea */ - vsv = (savearea_vec *)sv->save_hdr.save_misc1; /* Get a possible vector savearea */ + fsv = CAST_DOWN(savearea_fpu *, sv->save_hdr.save_misc0); /* Get a possible floating point savearea */ + vsv = CAST_DOWN(savearea_vec *, sv->save_hdr.save_misc1); /* Get a possible vector savearea */ if((sv->save_hdr.save_misc2 != 0xDEBB1ED0) || (sv->save_hdr.save_misc3 != 0xE5DA11A5)) { /* See if valid savearea */ panic("act_thread_catt: attempt to attach invalid general context savearea - %08X\n", sv); /* Die */ @@ -1216,84 +1593,85 @@ void act_thread_catt(void *ctx) { panic("act_thread_catt: attempt to attach invalid vector context savearea - %08X\n", vsv); /* Die */ } - act = current_act(); /* Find ourselves */ + thread = current_thread(); - toss_live_fpu(act->mact.curctx); /* Toss my floating point if live anywhere */ - toss_live_vec(act->mact.curctx); /* Toss my vector if live anywhere */ + toss_live_fpu(thread->machine.curctx); /* Toss my floating point if live anywhere */ + toss_live_vec(thread->machine.curctx); /* Toss my vector if live anywhere */ sv->save_hdr.save_misc2 = 0; /* Eye catcher for debug */ sv->save_hdr.save_misc3 = 0; /* Eye catcher for debug */ - sv->save_hdr.save_act = act; /* Set us as owner */ + sv->save_hdr.save_act = thread; - spc = (unsigned int)act->map->pmap->space; /* Get the space we're in */ + spc = (unsigned int)thread->map->pmap->space; /* Get the space we're in */ - osv = act->mact.pcb; /* Get the top general savearea */ + osv = thread->machine.pcb; /* Get the top general savearea */ psv = 0; while(osv) { /* Any saved state? */ if(osv->save_srr1 & MASK(MSR_PR)) break; /* Leave if this is user state */ psv = osv; /* Save previous savearea address */ - osv = (savearea *)osv->save_hdr.save_prev; /* Get one underneath our's */ + osv = CAST_DOWN(savearea *, osv->save_hdr.save_prev); /* Get one underneath our's */ } if(osv) { /* Did we find one? */ if(psv) psv->save_hdr.save_prev = 0; /* Yes, clear pointer to it (it should always be last) or */ - else act->mact.pcb = 0; /* to the start if the only one */ + else thread->machine.pcb = 0; /* to the start if the only one */ save_release(osv); /* Nope, release it */ } - if(psv) psv->save_hdr.save_prev = (addr64_t)sv; /* Chain us to the end or */ - else act->mact.pcb = (pcb_t)sv; /* to the start if the only one */ + if(psv) psv->save_hdr.save_prev = (addr64_t)((uintptr_t)sv); /* Chain us to the end or */ + else thread->machine.pcb = (pcb_t)sv; /* to the start if the only one */ + thread->machine.upcb = (pcb_t)sv; /* Set the user pcb */ - ovsv = act->mact.curctx->VMXsave; /* Get the top vector savearea */ + ovsv = thread->machine.curctx->VMXsave; /* Get the top vector savearea */ pvsv = 0; while(ovsv) { /* Any VMX saved state? */ if(!(ovsv->save_hdr.save_level)) break; /* Leave if this is user state */ pvsv = ovsv; /* Save previous savearea address */ - ovsv = (savearea_vec *)ovsv->save_hdr.save_prev; /* Get one underneath our's */ + ovsv = CAST_DOWN(savearea_vec *, ovsv->save_hdr.save_prev); /* Get one underneath our's */ } if(ovsv) { /* Did we find one? */ if(pvsv) pvsv->save_hdr.save_prev = 0; /* Yes, clear pointer to it (it should always be last) or */ - else act->mact.curctx->VMXsave = 0; /* to the start if the only one */ + else thread->machine.curctx->VMXsave = 0; /* to the start if the only one */ save_release((savearea *)ovsv); /* Nope, release it */ } if(vsv) { /* Are we sticking any vector on this one? */ - if(pvsv) pvsv->save_hdr.save_prev = (addr64_t)vsv; /* Yes, chain us to the end or */ - else act->mact.curctx->VMXsave = vsv; /* to the start if the only one */ + if(pvsv) pvsv->save_hdr.save_prev = (addr64_t)((uintptr_t)vsv); /* Yes, chain us to the end or */ + else thread->machine.curctx->VMXsave = vsv; /* to the start if the only one */ vsv->save_hdr.save_misc2 = 0; /* Eye catcher for debug */ vsv->save_hdr.save_misc3 = 0; /* Eye catcher for debug */ - vsv->save_hdr.save_act = act; /* Set us as owner */ + vsv->save_hdr.save_act = thread; } - ofsv = act->mact.curctx->FPUsave; /* Get the top float savearea */ + ofsv = thread->machine.curctx->FPUsave; /* Get the top float savearea */ pfsv = 0; while(ofsv) { /* Any float saved state? */ if(!(ofsv->save_hdr.save_level)) break; /* Leave if this is user state */ pfsv = ofsv; /* Save previous savearea address */ - ofsv = (savearea_fpu *)ofsv->save_hdr.save_prev; /* Get one underneath our's */ + ofsv = CAST_DOWN(savearea_fpu *, ofsv->save_hdr.save_prev); /* Get one underneath our's */ } if(ofsv) { /* Did we find one? */ if(pfsv) pfsv->save_hdr.save_prev = 0; /* Yes, clear pointer to it (it should always be last) or */ - else act->mact.curctx->FPUsave = 0; /* to the start if the only one */ + else thread->machine.curctx->FPUsave = 0; /* to the start if the only one */ save_release((savearea *)ofsv); /* Nope, release it */ } if(fsv) { /* Are we sticking any vector on this one? */ - if(pfsv) pfsv->save_hdr.save_prev = (addr64_t)fsv; /* Yes, chain us to the end or */ - else act->mact.curctx->FPUsave = fsv; /* to the start if the only one */ + if(pfsv) pfsv->save_hdr.save_prev = (addr64_t)((uintptr_t)fsv); /* Yes, chain us to the end or */ + else thread->machine.curctx->FPUsave = fsv; /* to the start if the only one */ fsv->save_hdr.save_misc2 = 0; /* Eye catcher for debug */ fsv->save_hdr.save_misc3 = 0; /* Eye catcher for debug */ - fsv->save_hdr.save_act = act; /* Set us as owner */ + fsv->save_hdr.save_act = thread; } } @@ -1306,16 +1684,18 @@ void act_thread_catt(void *ctx) { * */ -void act_thread_cfree(void *ctx) { +void +act_thread_cfree(void *ctx) +{ - savearea *sv, *osv; - savearea_fpu *fsv, *ofsv; - savearea_vec *vsv, *ovsv, *pvsv; + savearea *sv; + savearea_fpu *fsv; + savearea_vec *vsv; sv = (savearea *)ctx; /* Make this easier for C */ - fsv = (savearea_fpu *)sv->save_hdr.save_misc0; /* Get a possible floating point savearea */ - vsv = (savearea_vec *)sv->save_hdr.save_misc1; /* Get a possible vector savearea */ + fsv = CAST_DOWN(savearea_fpu *, sv->save_hdr.save_misc0); /* Get a possible floating point savearea */ + vsv = CAST_DOWN(savearea_vec *, sv->save_hdr.save_misc1); /* Get a possible vector savearea */ if((sv->save_hdr.save_misc2 != 0xDEBB1ED0) || (sv->save_hdr.save_misc3 != 0xE5DA11A5)) { /* See if valid savearea */ panic("act_thread_cfree: attempt to detatch invalid general context savearea - %08X\n", sv); /* Die */ @@ -1348,19 +1728,20 @@ void act_thread_cfree(void *ctx) { * enables or disables floating point exceptions for the thread. * returns old state */ -int thread_enable_fpe(thread_act_t act, int onoff) +int thread_enable_fpe( + thread_t thread, + int onoff) { savearea *sv; - unsigned int oldmsr; + uint64_t oldmsr; - sv = find_user_regs(act); /* Find the user registers */ - if(!sv) sv = get_user_regs(act); /* Didn't find any, allocate and initialize o -ne */ + sv = find_user_regs(thread); /* Find the user registers */ + if(!sv) sv = get_user_regs(thread); /* Didn't find any, allocate and initialize one */ - oldmsr = sv->save_srr1; /* Get the old msr */ + oldmsr = sv->save_srr1; /* Get the old msr */ - if(onoff) sv->save_srr1 = oldmsr | MASK(MSR_FE0) | MASK(MSR_FE1); /* Flip on precise FP exceptions */ - else sv->save_srr1 = oldmsr & ~(MASK(MSR_FE0) | MASK(MSR_FE1)); /* Flip on precise FP exceptions */ + if(onoff) sv->save_srr1 = oldmsr | (uint64_t)(MASK(MSR_FE0) | MASK(MSR_FE1)); /* Flip on precise FP exceptions */ + else sv->save_srr1 = oldmsr & (uint64_t)(~(MASK(MSR_FE0) | MASK(MSR_FE1))); /* Flip on precise FP exceptions */ - return ((oldmsr & (MASK(MSR_FE0) | MASK(MSR_FE1))) != 0); /* Return if it was enabled or not */ + return ((oldmsr & (MASK(MSR_FE0) | MASK(MSR_FE1))) != 0); /* Return if it was enabled or not */ }