X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/Security/libsecurity_cryptkit/lib/falloc.c?ds=sidebyside

diff --git a/Security/libsecurity_cryptkit/lib/falloc.c b/Security/libsecurity_cryptkit/lib/falloc.c
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+++ b/Security/libsecurity_cryptkit/lib/falloc.c
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+/* Copyright (c) 1998,2011,2014 Apple Inc.  All Rights Reserved.
+ *
+ * NOTICE: USE OF THE MATERIALS ACCOMPANYING THIS NOTICE IS SUBJECT
+ * TO THE TERMS OF THE SIGNED "FAST ELLIPTIC ENCRYPTION (FEE) REFERENCE
+ * SOURCE CODE EVALUATION AGREEMENT" BETWEEN APPLE, INC. AND THE
+ * ORIGINAL LICENSEE THAT OBTAINED THESE MATERIALS FROM APPLE,
+ * INC.  ANY USE OF THESE MATERIALS NOT PERMITTED BY SUCH AGREEMENT WILL
+ * EXPOSE YOU TO LIABILITY.
+ ***************************************************************************
+ *
+ * falloc.c - FEE malloc routines
+ *
+ * Revision History
+ * ----------------
+ *  28 May 98 at Apple
+ *	Added Mac-specific allocators from temp memory
+ *  20 Aug 96 at NeXT
+ *	Created.
+ */
+
+#include "platform.h"
+#include "falloc.h"
+#include <stdlib.h>
+
+/* watchpoint emulator */
+#define FALLOC_WATCH	0
+#if		FALLOC_WATCH
+#include <stdio.h>
+/* set these with debugger */
+void *mallocWatchAddrs;
+void *freeWatchAddrs;
+#endif
+
+/* if NULL, use our own */
+static mallocExternFcn *mallocExt = NULL;
+static freeExternFcn *freeExt = NULL;
+static reallocExternFcn *reallocExt = NULL;
+
+void fallocRegister(mallocExternFcn *mallocExtern,
+	freeExternFcn *freeExtern,
+	reallocExternFcn *reallocExtern)
+{
+	mallocExt = mallocExtern;
+	freeExt = freeExtern;
+	reallocExt = reallocExtern;
+}
+
+/*
+ * All this can be optimized and tailored to specific platforms, of course...
+ */
+
+void *fmalloc(unsigned size)
+{
+	void *rtn;
+	if(mallocExt != NULL) {
+		rtn = (mallocExt)(size);
+	}
+	else {
+		rtn = malloc(size);
+	}
+	#if		FALLOC_WATCH
+	if(rtn == mallocWatchAddrs) {
+		printf("====fmalloc watchpoint (0x%x) hit\n",
+			(unsigned)mallocWatchAddrs);
+	}
+	#endif
+	return rtn;
+}
+
+void *fmallocWithData(const void *origData,
+	unsigned origDataLen)
+{
+	void *rtn = fmalloc(origDataLen);
+
+	bcopy(origData, rtn, origDataLen);
+	return rtn;
+}
+
+void ffree(void *data)
+{
+	#if		FALLOC_WATCH
+	if(data == freeWatchAddrs) {
+		printf("====ffree watchpoint (0x%x) hit\n",
+			(unsigned)freeWatchAddrs);
+	}
+	#endif
+	if(freeExt != NULL) {
+		(freeExt)(data);
+	}
+	else {
+		free(data);
+	}
+}
+
+void *frealloc(void *oldPtr, unsigned newSize)
+{
+	#if		FALLOC_WATCH
+	if(oldPtr == freeWatchAddrs) {
+		printf("====frealloc watchpoint (0x%x) hit\n",
+			(unsigned)freeWatchAddrs);
+	}
+	#endif
+	if(reallocExt != NULL) {
+		return (reallocExt)(oldPtr, newSize);
+	}
+	else {
+		return realloc(oldPtr, newSize);
+	}
+}