/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * 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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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. The rights granted to you under the
+ * License may not be used to create, or enable the creation or
+ * redistribution of, unlawful or unlicensed copies of an Apple operating
+ * system, or to circumvent, violate, or enable the circumvention or
+ * violation of, any terms of an Apple operating system software license
+ * agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
*/
/*
* @OSF_FREE_COPYRIGHT@
#include <vm/vm_map.h>
#include <vm/vm_kern.h> /* for kernel_map, ipc_kernel_map */
#include <vm/vm_pageout.h>
-#include <vm/vm_protos.h> /* for vm_map_remove_commpage64 */
+#include <vm/vm_protos.h> /* for vm_map_remove_commpage */
#if MACH_KDB
#include <ddb/db_sym.h>
task_t task,
boolean_t is64bit)
{
- if(is64bit) {
+ thread_t thread;
+
+ if (is64bit) {
+ if (task_has_64BitAddr(task))
+ return;
+
/* LP64todo - no task working set for 64-bit */
task_set_64BitAddr(task);
task_working_set_disable(task);
- task->map->max_offset = MACH_VM_MAX_ADDRESS;
} else {
+ if ( !task_has_64BitAddr(task))
+ return;
+
/*
* Deallocate all memory previously allocated
* above the 32-bit address space, since it won't
* be accessible anymore.
*/
/* LP64todo - make this clean */
-#ifdef __ppc__
- vm_map_remove_commpage64(task->map);
+ vm_map_remove_commpage(task->map);
pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */
-#endif
(void) vm_map_remove(task->map,
(vm_map_offset_t) VM_MAX_ADDRESS,
MACH_VM_MAX_ADDRESS,
VM_MAP_NO_FLAGS);
task_clear_64BitAddr(task);
- task->map->max_offset = (vm_map_offset_t)VM_MAX_ADDRESS;
}
+ /* FIXME: On x86, the thread save state flavor can diverge from the
+ * task's 64-bit feature flag due to the 32-bit/64-bit register save
+ * state dichotomy. Since we can be pre-empted in this interval,
+ * certain routines may observe the thread as being in an inconsistent
+ * state with respect to its task's 64-bitness.
+ */
+#ifdef __i386__
+ queue_iterate(&task->threads, thread, thread_t, task_threads) {
+ machine_thread_switch_addrmode(thread, !is64bit);
+ }
+#endif
}
void
/*
* Create the kernel task as the first task.
*/
- if (task_create_internal(TASK_NULL, FALSE, &kernel_task) != KERN_SUCCESS)
+ if (task_create_internal(TASK_NULL, FALSE, FALSE, &kernel_task) != KERN_SUCCESS)
panic("task_init\n");
vm_map_deallocate(kernel_task->map);
return(KERN_INVALID_ARGUMENT);
return task_create_internal(
- parent_task, inherit_memory, child_task);
+ parent_task, inherit_memory, task_has_64BitAddr(parent_task), child_task);
}
kern_return_t
return(KERN_INVALID_SECURITY);
result = task_create_internal(
- parent_task, inherit_memory, child_task);
+ parent_task, inherit_memory, task_has_64BitAddr(parent_task), child_task);
if (result != KERN_SUCCESS)
return(result);
task_create_internal(
task_t parent_task,
boolean_t inherit_memory,
+ boolean_t is_64bit,
task_t *child_task) /* OUT */
{
task_t new_task;
if (inherit_memory)
new_task->map = vm_map_fork(parent_task->map);
else
- new_task->map = vm_map_create(pmap_create(0),
+ new_task->map = vm_map_create(pmap_create(0, is_64bit),
(vm_map_offset_t)(VM_MIN_ADDRESS),
(vm_map_offset_t)(VM_MAX_ADDRESS), TRUE);
new_task->bsd_info = 0;
#endif /* MACH_BSD */
+#ifdef __i386__
+ new_task->i386_ldt = 0;
+#endif
+
#ifdef __ppc__
if(BootProcInfo.pf.Available & pf64Bit) new_task->taskFeatures[0] |= tf64BitData; /* If 64-bit machine, show we have 64-bit registers at least */
#endif
convert_port_to_ledger(parent_task->paged_ledger_port));
if(task_has_64BitAddr(parent_task))
task_set_64BitAddr(new_task);
+
+#ifdef __i386__
+ if (inherit_memory && parent_task->i386_ldt)
+ new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
+#endif
}
else {
pset = &default_pset;
zfree(task_zone, task);
}
+/*
+ * task_name_deallocate:
+ *
+ * Drop a reference on a task name.
+ */
+void
+task_name_deallocate(
+ task_name_t task_name)
+{
+ return(task_deallocate((task_t)task_name));
+}
+
+
/*
* task_terminate:
*
ipc_space_destroy(task->itk_space);
/* LP64todo - make this clean */
-#ifdef __ppc__
- vm_map_remove_commpage64(task->map);
+ vm_map_remove_commpage(task->map);
pmap_unmap_sharedpage(task->map->pmap); /* Unmap commpage */
-#endif
+
+ if (vm_map_has_4GB_pagezero(task->map))
+ vm_map_clear_4GB_pagezero(task->map);
/*
* If the current thread is a member of the task
projects / apple / xnu.git / blobdiff