Loading...
--- xnu/xnu-4903.221.2/libkern/c++/OSRuntime.cpp
+++ xnu/xnu-124.1/libkern/c++/OSRuntime.cpp
@@ -1,587 +1,343 @@
/*
- * Copyright (c) 2000,2008-2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_HEADER_START@
*
- * 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.
+ * 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.
*
- * 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_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
*/
/*
- * Copyright (c) 1997 Apple Inc.
+ * Copyright (c) 1997 Apple Computer, Inc.
*
*/
#include <libkern/c++/OSMetaClass.h>
-#include <libkern/c++/OSKext.h>
#include <libkern/c++/OSLib.h>
#include <libkern/c++/OSSymbol.h>
-#include <IOKit/IOKitDebug.h>
+#include <libkern/c++/OSBoolean.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
#include <string.h>
+
+struct mach_header;
+
#include <mach/mach_types.h>
-#include <libkern/kernel_mach_header.h>
-#include <libkern/prelink.h>
+#include <mach-o/mach_header.h>
#include <stdarg.h>
-#if PRAGMA_MARK
-#pragma mark Constants &c.
-#endif /* PRAGMA_MARK */
-OSKextLogSpec kOSRuntimeLogSpec =
- kOSKextLogErrorLevel |
- kOSKextLogLoadFlag |
- kOSKextLogKextBookkeepingFlag;
-
-#if PRAGMA_MARK
-#pragma mark Logging Bootstrap
-#endif /* PRAGMA_MARK */
-/*********************************************************************
-* kern_os Logging Bootstrap
-*
-* We can't call in to OSKext until the kernel's C++ environment is up
-* and running, so let's mask those references with a check variable.
-* We print unconditionally if C++ isn't up, but if that's the case
-* we've generally hit a serious error in kernel init!
-*********************************************************************/
-static bool gKernelCPPInitialized = false;
-
-#define OSRuntimeLog(kext, flags, format, args...) \
- do { \
- if (gKernelCPPInitialized) { \
- OSKextLog((kext), (flags), (format), ## args); \
- } else { \
- printf((format), ## args); \
- } \
- } while (0)
-
-#if PRAGMA_MARK
-#pragma mark kern_os Allocator Package
-#endif /* PRAGMA_MARK */
-/*********************************************************************
-* kern_os Allocator Package
-*********************************************************************/
-
-/*********************************************************************
-*********************************************************************/
#if OSALLOCDEBUG
extern int debug_iomalloc_size;
#endif
-/*********************************************************************
-*********************************************************************/
-void *
-kern_os_malloc(size_t size)
-{
- void *mem;
- if (size == 0) {
- return (0);
+#define MDECL(reqlen) \
+typedef union { \
+ struct _mhead hdr; \
+ char _m[(reqlen) + sizeof (struct _mhead)]; \
+} hdr_t; \
+hdr_t
+
+struct _mhead {
+ size_t mlen;
+ char dat[0];
+};
+
+void *kern_os_malloc(
+ size_t size)
+{
+ MDECL(size) *mem;
+ size_t memsize = sizeof (*mem);
+
+ if (size == 0)
+ return (0);
+
+ mem = (hdr_t *)kalloc(memsize);
+ if (!mem)
+ return (0);
+
+#if OSALLOCDEBUG
+ debug_iomalloc_size += memsize;
+#endif
+
+ mem->hdr.mlen = memsize;
+ (void) memset(mem->hdr.dat, 0, size);
+
+ return (mem->hdr.dat);
+}
+
+void kern_os_free(
+ void *addr)
+{
+ struct _mhead *hdr;
+
+ if (!addr)
+ return;
+
+ hdr = (struct _mhead *) addr; hdr--;
+
+#if OSALLOCDEBUG
+ debug_iomalloc_size -= hdr->mlen;
+#endif
+
+#if 0
+ memset((vm_offset_t)hdr, 0xbb, hdr->mlen);
+#else
+ kfree((vm_offset_t)hdr, hdr->mlen);
+#endif
+}
+
+void *kern_os_realloc(
+ void *addr,
+ size_t nsize)
+{
+ struct _mhead *ohdr;
+ MDECL(nsize) *nmem;
+ size_t nmemsize, osize;
+
+ if (!addr)
+ return (kern_os_malloc(nsize));
+
+ ohdr = (struct _mhead *) addr; ohdr--;
+ osize = ohdr->mlen - sizeof (*ohdr);
+ if (nsize == osize)
+ return (addr);
+
+ if (nsize == 0) {
+ kern_os_free(addr);
+ return (0);
+ }
+
+ nmemsize = sizeof (*nmem);
+ nmem = (hdr_t *) kalloc(nmemsize);
+ if (!nmem){
+ kern_os_free(addr);
+ return (0);
+ }
+
+#if OSALLOCDEBUG
+ debug_iomalloc_size += (nmemsize - ohdr->mlen);
+#endif
+
+ nmem->hdr.mlen = nmemsize;
+ if (nsize > osize)
+ (void) memset(&nmem->hdr.dat[osize], 0, nsize - osize);
+ (void) memcpy(nmem->hdr.dat, ohdr->dat,
+ (nsize > osize) ? osize : nsize);
+ kfree((vm_offset_t)ohdr, ohdr->mlen);
+
+ return (nmem->hdr.dat);
+}
+
+size_t kern_os_malloc_size(
+ void *addr)
+{
+ struct _mhead *hdr;
+
+ if (!addr)
+ return( 0);
+
+ hdr = (struct _mhead *) addr; hdr--;
+ return( hdr->mlen - sizeof (struct _mhead));
+}
+
+void __pure_virtual( void ) { panic(__FUNCTION__); }
+
+typedef void (*structor_t)(void);
+
+void OSRuntimeUnloadCPPForSegment(struct segment_command * segment) {
+
+ struct section * section;
+
+ for (section = firstsect(segment);
+ section != 0;
+ section = nextsect(segment, section)) {
+
+ if (strcmp(section->sectname, "__destructor") == 0) {
+ structor_t * destructors = (structor_t *)section->addr;
+
+ if (destructors) {
+ int num_destructors = section->size / sizeof(structor_t);
+
+ for (int i = 0; i < num_destructors; i++) {
+ (*destructors[i])();
+ }
+ } /* if (destructors) */
+ } /* if (strcmp...) */
+ } /* for (section...) */
+
+ return;
+}
+
+void OSRuntimeUnloadCPP(kmod_info_t *ki, void *)
+{
+ if (ki && ki->address) {
+
+ struct segment_command * segment;
+ struct mach_header *header;
+
+ OSSymbol::checkForPageUnload((void *) ki->address,
+ (void *) (ki->address + ki->size));
+
+ header = (struct mach_header *)ki->address;
+ segment = firstsegfromheader(header);
+
+ for (segment = firstsegfromheader(header);
+ segment != 0;
+ segment = nextseg(segment)) {
+
+ OSRuntimeUnloadCPPForSegment(segment);
+ }
}
-
- mem = kallocp_tag_bt((vm_size_t *)&size, VM_KERN_MEMORY_LIBKERN);
- if (!mem) {
- return (0);
+}
+
+kern_return_t OSRuntimeFinalizeCPP(kmod_info_t *ki, void *)
+{
+ void *metaHandle;
+
+ if (OSMetaClass::modHasInstance(ki->name)) {
+ // @@@ gvdl should have a verbose flag
+ printf("Can't unload %s due to -\n", ki->name);
+ OSMetaClass::reportModInstances(ki->name);
+ return kOSMetaClassHasInstances;
}
-#if OSALLOCDEBUG
- OSAddAtomic(size, &debug_iomalloc_size);
-#endif
-
- bzero(mem, size);
-
- return mem;
-}
-
-/*********************************************************************
-*********************************************************************/
-void
-kern_os_free(void * addr)
-{
- size_t size;
- size = kalloc_size(addr);
-#if OSALLOCDEBUG
- OSAddAtomic(-size, &debug_iomalloc_size);
-#endif
-
- kfree_addr(addr);
-}
-
-/*********************************************************************
-*********************************************************************/
-void *
-kern_os_realloc(
- void * addr,
- size_t nsize)
-{
- void *nmem;
- size_t osize;
-
- if (!addr) {
- return (kern_os_malloc(nsize));
- }
-
- osize = kalloc_size(addr);
- if (nsize == osize) {
- return (addr);
- }
-
- if (nsize == 0) {
- kfree_addr(addr);
- return (0);
- }
-
- nmem = kallocp_tag_bt((vm_size_t *)&nsize, VM_KERN_MEMORY_LIBKERN);
- if (!nmem){
- kfree_addr(addr);
- return (0);
- }
-
-#if OSALLOCDEBUG
- OSAddAtomic((nsize - osize), &debug_iomalloc_size);
-#endif
-
- if (nsize > osize) {
- (void)memset((char *)nmem + osize, 0, nsize - osize);
- }
- (void)memcpy(nmem, addr, (nsize > osize) ? osize : nsize);
- kfree_addr(addr);
-
- return (nmem);
-}
-
-#if PRAGMA_MARK
-#pragma mark Libkern Init
-#endif /* PRAGMA_MARK */
-/*********************************************************************
-* Libkern Init
-*********************************************************************/
-
-#if __GNUC__ >= 3
-void __cxa_pure_virtual( void ) { panic("%s", __FUNCTION__); }
-#else
-void __pure_virtual( void ) { panic("%s", __FUNCTION__); }
-#endif
-
-extern lck_grp_t * IOLockGroup;
-extern kmod_info_t g_kernel_kmod_info;
-
-enum {
- kOSSectionNamesDefault = 0,
- kOSSectionNamesBuiltinKext = 1,
- kOSSectionNamesCount = 2,
-};
-enum {
- kOSSectionNameInitializer = 0,
- kOSSectionNameFinalizer = 1,
- kOSSectionNameCount = 2
-};
-
-static const char *
-gOSStructorSectionNames[kOSSectionNamesCount][kOSSectionNameCount] = {
- { SECT_MODINITFUNC, SECT_MODTERMFUNC },
- { kBuiltinInitSection, kBuiltinTermSection }
-};
-
-void OSlibkernInit(void)
-{
- // This must be called before calling OSRuntimeInitializeCPP.
- OSMetaClassBase::initialize();
-
- g_kernel_kmod_info.address = (vm_address_t) &_mh_execute_header;
- if (kOSReturnSuccess != OSRuntimeInitializeCPP(NULL)) {
- // &g_kernel_kmod_info, gOSSectionNamesStandard, 0, 0)) {
- panic("OSRuntime: C++ runtime failed to initialize.");
- }
-
- gKernelCPPInitialized = true;
-
- return;
-}
-
-__END_DECLS
-
-#if PRAGMA_MARK
-#pragma mark C++ Runtime Load/Unload
-#endif /* PRAGMA_MARK */
-/*********************************************************************
-* kern_os C++ Runtime Load/Unload
-*********************************************************************/
-
-
-typedef void (*structor_t)(void);
-
-static bool
-OSRuntimeCallStructorsInSection(
- OSKext * theKext,
- kmod_info_t * kmodInfo,
- void * metaHandle,
- kernel_segment_command_t * segment,
- const char * sectionName,
- uintptr_t textStart,
- uintptr_t textEnd)
-{
- kernel_section_t * section;
- bool result = TRUE;
-
- for (section = firstsect(segment);
- section != NULL;
- section = nextsect(segment, section))
- {
- if (strncmp(section->sectname, sectionName, sizeof(section->sectname) - 1)) continue;
-
- structor_t * structors = (structor_t *)section->addr;
- if (!structors) continue;
-
- structor_t structor;
- unsigned int num_structors = section->size / sizeof(structor_t);
- unsigned int hit_null_structor = 0;
- unsigned int firstIndex = 0;
-
- if (textStart)
- {
- // bsearch for any in range
- unsigned int baseIdx;
- unsigned int lim;
- uintptr_t value;
- firstIndex = num_structors;
- for (lim = num_structors, baseIdx = 0; lim; lim >>= 1)
- {
- value = (uintptr_t) structors[baseIdx + (lim >> 1)];
- if (!value) panic("%s: null structor", kmodInfo->name);
- if ((value >= textStart) && (value < textEnd))
- {
- firstIndex = (baseIdx + (lim >> 1));
- // scan back for the first in range
- for (; firstIndex; firstIndex--)
- {
- value = (uintptr_t) structors[firstIndex - 1];
- if ((value < textStart) || (value >= textEnd)) break;
- }
- break;
- }
- if (textStart > value)
- {
- // move right
- baseIdx += (lim >> 1) + 1;
- lim--;
- }
- // else move left
- }
- baseIdx = (baseIdx + (lim >> 1));
- }
- for (;
- (firstIndex < num_structors)
- && (!metaHandle || OSMetaClass::checkModLoad(metaHandle));
- firstIndex++)
- {
- if ((structor = structors[firstIndex]))
- {
- if ((textStart && ((uintptr_t) structor < textStart))
- || (textEnd && ((uintptr_t) structor >= textEnd))) break;
-
- (*structor)();
- }
- else if (!hit_null_structor)
- {
- hit_null_structor = 1;
- OSRuntimeLog(theKext, kOSRuntimeLogSpec,
- "Null structor in kext %s segment %s!",
- kmodInfo->name, section->segname);
- }
- }
- if (metaHandle) result = OSMetaClass::checkModLoad(metaHandle);
- break;
- } /* for (section...) */
- return (result);
-}
-
-/*********************************************************************
-*********************************************************************/
-kern_return_t
-OSRuntimeFinalizeCPP(
- OSKext * theKext)
-{
- kern_return_t result = KMOD_RETURN_FAILURE;
- void * metaHandle = NULL; // do not free
- kernel_mach_header_t * header;
- kernel_segment_command_t * segment;
- kmod_info_t * kmodInfo;
- const char ** sectionNames;
- uintptr_t textStart;
- uintptr_t textEnd;
-
- textStart = 0;
- textEnd = 0;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
- if (theKext) {
- if (!theKext->isCPPInitialized()) {
- result = KMOD_RETURN_SUCCESS;
- goto finish;
- }
- kmodInfo = theKext->kmod_info;
- if (!kmodInfo || !kmodInfo->address) {
- result = kOSKextReturnInvalidArgument;
- goto finish;
- }
- header = (kernel_mach_header_t *)kmodInfo->address;
- if (theKext->flags.builtin) {
- header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
- textStart = kmodInfo->address;
- textEnd = textStart + kmodInfo->size;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
- }
- } else {
- kmodInfo = &g_kernel_kmod_info;
- header = (kernel_mach_header_t *)kmodInfo->address;
- }
-
- /* OSKext checks for this condition now, but somebody might call
- * this function directly (the symbol is exported....).
- */
- if (OSMetaClass::modHasInstance(kmodInfo->name)) {
- // xxx - Don't log under errors? this is more of an info thing
- OSRuntimeLog(theKext, kOSRuntimeLogSpec,
- "Can't tear down kext %s C++; classes have instances:",
- kmodInfo->name);
- OSKext::reportOSMetaClassInstances(kmodInfo->name, kOSRuntimeLogSpec);
- result = kOSMetaClassHasInstances;
- goto finish;
- }
-
- /* Tell the meta class system that we are starting to unload.
- * metaHandle isn't actually needed on the finalize path,
- * so we don't check it here, even though OSMetaClass::postModLoad() will
- * return a failure (it only does actual work on the init path anyhow).
- */
- metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
-
- OSSymbol::checkForPageUnload((void *)kmodInfo->address,
- (void *)(kmodInfo->address + kmodInfo->size));
-
- header = (kernel_mach_header_t *)kmodInfo->address;
- segment = firstsegfromheader(header);
-
- for (segment = firstsegfromheader(header);
- segment != 0;
- segment = nextsegfromheader(header, segment)) {
-
- OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
- sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
- }
-
- (void)OSMetaClass::postModLoad(metaHandle);
-
- if (theKext) {
- theKext->setCPPInitialized(false);
- }
- result = KMOD_RETURN_SUCCESS;
-finish:
- return result;
-}
-
-/*********************************************************************
-*********************************************************************/
-kern_return_t
-OSRuntimeInitializeCPP(
- OSKext * theKext)
-{
- kern_return_t result = KMOD_RETURN_FAILURE;
- kernel_mach_header_t * header = NULL;
- void * metaHandle = NULL; // do not free
- bool load_success = true;
- kernel_segment_command_t * segment = NULL; // do not free
- kernel_segment_command_t * failure_segment = NULL; // do not free
- kmod_info_t * kmodInfo;
- const char ** sectionNames;
- uintptr_t textStart;
- uintptr_t textEnd;
-
- textStart = 0;
- textEnd = 0;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesDefault];
- if (theKext) {
- if (theKext->isCPPInitialized()) {
- result = KMOD_RETURN_SUCCESS;
- goto finish;
- }
-
- kmodInfo = theKext->kmod_info;
- if (!kmodInfo || !kmodInfo->address) {
- result = kOSKextReturnInvalidArgument;
- goto finish;
- }
- header = (kernel_mach_header_t *)kmodInfo->address;
-
- if (theKext->flags.builtin) {
- header = (kernel_mach_header_t *)g_kernel_kmod_info.address;
- textStart = kmodInfo->address;
- textEnd = textStart + kmodInfo->size;
- sectionNames = gOSStructorSectionNames[kOSSectionNamesBuiltinKext];
- }
- } else {
- kmodInfo = &g_kernel_kmod_info;
- header = (kernel_mach_header_t *)kmodInfo->address;
- }
-
- /* Tell the meta class system that we are starting the load
- */
- metaHandle = OSMetaClass::preModLoad(kmodInfo->name);
+ // Tell the meta class system that we are starting to unload
+ metaHandle = OSMetaClass::preModLoad(ki->name);
+ OSRuntimeUnloadCPP(ki, 0); // Do the actual unload
+ (void) OSMetaClass::postModLoad(metaHandle);
+
+ return KMOD_RETURN_SUCCESS;
+}
+
+// Functions used by the extenTools/kmod library project
+kern_return_t OSRuntimeInitializeCPP(kmod_info_t *ki, void *)
+{
+ struct mach_header *header;
+ void *metaHandle;
+ bool load_success;
+ struct segment_command * segment;
+ struct segment_command * failure_segment;
+
+ if (!ki || !ki->address)
+ return KMOD_RETURN_FAILURE;
+ else
+ header = (struct mach_header *) ki->address;
+
+ // Tell the meta class system that we are starting the load
+ metaHandle = OSMetaClass::preModLoad(ki->name);
assert(metaHandle);
- if (!metaHandle) {
- goto finish;
- }
-
- /* NO GOTO PAST HERE. */
-
- /* Scan the header for all constructor sections, in any
+ if (!metaHandle)
+ return KMOD_RETURN_FAILURE;
+
+ load_success = true;
+ failure_segment = 0;
+
+ /* Scan the header for all sections named "__constructor", in any
* segment, and invoke the constructors within those sections.
*/
for (segment = firstsegfromheader(header);
- segment != NULL && load_success;
- segment = nextsegfromheader(header, segment))
- {
+ segment != 0 && load_success;
+ segment = nextseg(segment)) {
+
+ struct section * section;
+
/* Record the current segment in the event of a failure.
*/
failure_segment = segment;
- load_success = OSRuntimeCallStructorsInSection(
- theKext, kmodInfo, metaHandle, segment,
- sectionNames[kOSSectionNameInitializer],
- textStart, textEnd);
+
+ for (section = firstsect(segment);
+ section != 0 && load_success;
+ section = nextsect(segment, section)) {
+
+ if (strcmp(section->sectname, "__constructor") == 0) {
+ structor_t * constructors = (structor_t *)section->addr;
+
+ if (constructors) {
+ // FIXME: can we break here under the assumption that
+ // section names are unique within a segment?
+
+ int num_constructors = section->size / sizeof(structor_t);
+ int hit_null_constructor = 0;
+
+ for (int i = 0;
+ i < num_constructors &&
+ OSMetaClass::checkModLoad(metaHandle);
+ i++) {
+
+ if (constructors[i]) {
+ (*constructors[i])();
+ } else if (!hit_null_constructor) {
+ hit_null_constructor = 1;
+ printf("Error! Null constructor in segment %s.\n",
+ section->segname);
+ }
+ }
+ load_success = OSMetaClass::checkModLoad(metaHandle);
+
+ } /* if (constructors) */
+ } /* if (strcmp...) */
+ } /* for (section...) */
} /* for (segment...) */
- /* We failed so call all of the destructors. We must do this before
- * calling OSMetaClass::postModLoad() as the OSMetaClass destructors
- * will alter state (in the metaHandle) used by that function.
- */
+
+ // We failed so call all of the destructors
if (!load_success) {
- /* Scan the header for all destructor sections, in any
+ /* Scan the header for all sections named "__constructor", in any
* segment, and invoke the constructors within those sections.
*/
for (segment = firstsegfromheader(header);
segment != failure_segment && segment != 0;
- segment = nextsegfromheader(header, segment)) {
-
- OSRuntimeCallStructorsInSection(theKext, kmodInfo, NULL, segment,
- sectionNames[kOSSectionNameFinalizer], textStart, textEnd);
+ segment = nextseg(segment)) {
+
+ OSRuntimeUnloadCPPForSegment(segment);
} /* for (segment...) */
}
- /* Now, regardless of success so far, do the post-init registration
- * and cleanup. If we had to call the unloadCPP function, static
- * destructors have removed classes from the stalled list so no
- * metaclasses will actually be registered.
- */
- result = OSMetaClass::postModLoad(metaHandle);
-
- /* If we've otherwise been fine up to now, but OSMetaClass::postModLoad()
- * fails (typically due to a duplicate class), tear down all the C++
- * stuff from the kext. This isn't necessary for libkern/OSMetaClass stuff,
- * but may be necessary for other C++ code. We ignore the return value
- * because it's only a fail when there are existing instances of libkern
- * classes, and there had better not be any created on the C++ init path.
- */
- if (load_success && result != KMOD_RETURN_SUCCESS) {
- (void)OSRuntimeFinalizeCPP(theKext); //kmodInfo, sectionNames, textStart, textEnd);
- }
-
- if (theKext && load_success && result == KMOD_RETURN_SUCCESS) {
- theKext->setCPPInitialized(true);
- }
-finish:
- return result;
-}
-
-/*********************************************************************
-Unload a kernel segment.
-*********************************************************************/
-
-void
-OSRuntimeUnloadCPPForSegment(
- kernel_segment_command_t * segment)
-{
- OSRuntimeCallStructorsInSection(NULL, &g_kernel_kmod_info, NULL, segment,
- gOSStructorSectionNames[kOSSectionNamesDefault][kOSSectionNameFinalizer], 0, 0);
-}
-
-#if PRAGMA_MARK
-#pragma mark C++ Allocators & Deallocators
-#endif /* PRAGMA_MARK */
-/*********************************************************************
-* C++ Allocators & Deallocators
-*********************************************************************/
-void *
-operator new(size_t size)
+ return OSMetaClass::postModLoad(metaHandle);
+}
+
+static KMOD_LIB_DECL(__kernel__, 0);
+void OSlibkernInit(void)
+{
+ vm_address_t *headerArray = (vm_address_t *) getmachheaders();
+
+ KMOD_INFO_NAME.address = headerArray[0]; assert(!headerArray[1]);
+ if (kOSReturnSuccess != OSRuntimeInitializeCPP(&KMOD_INFO_NAME, 0))
+ panic("OSRuntime: C++ runtime failed to initialize");
+
+ OSBoolean::initialize();
+}
+
+__END_DECLS
+
+void * operator new( size_t size)
{
void * result;
- result = (void *) kern_os_malloc(size);
- return result;
-}
-
-void
-operator delete(void * addr)
-#if __cplusplus >= 201103L
- noexcept
-#endif
-{
- kern_os_free(addr);
- return;
-}
-
-void *
-operator new[](unsigned long sz)
-{
- if (sz == 0) sz = 1;
- return kern_os_malloc(sz);
-}
-
-void
-operator delete[](void * ptr)
-#if __cplusplus >= 201103L
- noexcept
-#endif
-{
- if (ptr) {
- kern_os_free(ptr);
- }
- return;
-}
-
-/* PR-6481964 - The compiler is going to check for size overflows in calls to
- * new[], and if there is an overflow, it will call __throw_length_error.
- * This is an unrecoverable error by the C++ standard, so we must panic here.
- *
- * We have to put the function inside the std namespace because of how the
- * compiler expects the name to be mangled.
- */
-namespace std {
-
-void
-__throw_length_error(const char *msg __unused)
-{
- panic("Size of array created by new[] has overflowed");
-}
-
-};
+ result = (void *) kern_os_malloc( size);
+ if( result)
+ bzero( result, size);
+ return( result);
+}
+
+void operator delete( void * addr)
+{
+ kern_os_free( addr);
+}
+