/*
- * 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@
*/
*/
#include <kern/thread.h>
-#include <kern/thread_act.h>
#include <kern/misc_protos.h>
#include <mach/ppc/thread_status.h>
#include <ppc/proc_reg.h>
+#include <ppc/cpu_internal.h>
#include <ppc/exception.h>
#include <ppc/misc_protos.h>
#include <ppc/savearea.h>
-#include <ppc/thread_act.h>
+#include <ppc/thread.h>
#include <ppc/Firmware.h>
+//#include <sys/time.h>
+typedef unsigned int fixpt_t; /* XXX <sys/resource.h> not self contained */
+#include <ppc/vmparam.h> /* USRSTACK, etc. */
+
#include <vm/vm_map.h>
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
int,
thread_state_t,
unsigned int,
- vm_offset_t *,
+ mach_vm_offset_t *,
int *
);
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,
*/
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 */
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) {
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) */
}
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 */
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 */
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;
+ }
+}
/*
* 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;
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 */
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) {
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;
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;
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 */
}
}
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 */
}
}
}
}
+
+/*
+ * 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.
* 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);
}
/*
* 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];
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 */
* 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;
}
/*
* 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... */
}
* 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... */
}
*/
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);
/*
* 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);
}
* 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;
}
* 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 */
}
* 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);
/*
* 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);
}
return;
}
-void thread_set_child(thread_act_t child, int pid)
+void
+thread_set_child(
+ thread_t child,
+ int pid)
{
struct savearea *child_state;
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;
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 */
(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)),
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 */
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;
}
}
*
*/
-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 */
* 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 */
}
projects / apple / xnu.git / blobdiff