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+++ dyld/dyld-95.3/src/dyldNew.cpp
@@ -0,0 +1,112 @@
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
+ *
+ * Copyright (c) 2004-2007 Apple Inc. All rights reserved.
+ *
+ * @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. 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_HEADER_END@
+ */
+
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+extern "C" void* __dso_handle;
+
+#include "dyld.h"
+#include "dyldLibSystemInterface.h"
+
+//
+// dyld initially allocates all memory from a pool inside dyld.
+// Once libSystem.dylib is initialized, dyld uses libSystem's malloc/free.
+//
+
+#if __LP64__
+ // room for about ~1000 initial dylibs
+ #define DYLD_INITIAL_POOL_SIZE 400*1024
+#else
+ // room for about ~900 initial dylibs
+ #define DYLD_INITIAL_POOL_SIZE 200*1024
+#endif
+static uint8_t dyldPool[DYLD_INITIAL_POOL_SIZE];
+static uint8_t* curPoolPtr = dyldPool;
+
+void* malloc(size_t size)
+{
+ if ( dyld::gLibSystemHelpers != NULL) {
+ void* p = dyld::gLibSystemHelpers->malloc(size);
+ //dyld::log("malloc(%lu) => %p from libSystem\n", size, p);
+ return p;
+ }
+ else {
+ size = (size+sizeof(void*)-1) & (-sizeof(void*)); // pointer align
+ uint8_t* result = curPoolPtr;
+ if ( (curPoolPtr + size) > &dyldPool[DYLD_INITIAL_POOL_SIZE] ) {
+ dyld::log("initial dyld memory pool exhausted\n");
+ _exit(1);
+ }
+ curPoolPtr += size;
+ //dyld::log("%p = malloc(%lu) from pool, total = %d\n", result, size, curPoolPtr-dyldPool);
+ return result;
+ }
+}
+
+
+void free(void* ptr)
+{
+ // ignore any pointer within dyld (i.e. stuff from pool or static strings)
+ if ( (dyld::gLibSystemHelpers != NULL) && ((ptr < &__dso_handle) || (ptr >= &dyldPool[DYLD_INITIAL_POOL_SIZE])) ) {
+ //dyld::log("free(%p) from libSystem\n", ptr);
+ return dyld::gLibSystemHelpers->free(ptr);
+ }
+ else {
+ // do nothing, pool entries can't be reclaimed
+ //dyld::log("free(%p) from pool\n", ptr);
+ }
+}
+
+
+void* calloc(size_t count, size_t size)
+{
+ if ( dyld::gLibSystemHelpers != NULL ) {
+ void* result = dyld::gLibSystemHelpers->malloc(size);
+ bzero(result, size);
+ return result;
+ }
+ else {
+ return malloc(count*size);
+ }
+}
+
+
+void* realloc(void *ptr, size_t size)
+{
+ void* result = malloc(size);
+ memcpy(result, ptr, size);
+ return result;
+}
+
+// void* reallocf(void *ptr, size_t size);
+// void* valloc(size_t size);
+
+// needed __libc_init()
+extern "C" int _malloc_lock;
+int _malloc_lock = 0;
+
+