1/* 2 * Copyright (c) 1999-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29/* 30 File: smf.c 31 32 Contains: platform-dependent malloc/free 33 34*/ 35 36#include <prng/YarrowCoreLib/src/smf.h> 37#include <kern/kalloc.h> 38#include <stddef.h> 39 40/* Shim emulating _MALLOC */ 41 42struct _mhead { 43 size_t mlen; 44 char dat[0]; 45}; 46 47SMFAPI void mmInit( void ) 48{ 49 return; 50} 51 52SMFAPI MMPTR mmMalloc(DWORD request) 53{ 54 struct _mhead *hdr = NULL; 55 size_t memsize = sizeof (*hdr) + request; 56 57 hdr = (void *) kalloc(memsize); 58 if (hdr == NULL) 59 return NULL; 60 hdr->mlen = memsize; 61 62 return (MMPTR) hdr->dat; 63} 64 65SMFAPI void mmFree(MMPTR ptrnum) 66{ 67 // get the size of the pointer back 68 struct _mhead *hdr; 69 70 hdr = ptrnum; 71 hdr--; 72 kfree(hdr, hdr->mlen); 73} 74 75SMFAPI LPVOID mmGetPtr(MMPTR ptrnum) 76{ 77 return (LPVOID)ptrnum; 78} 79 80SMFAPI void mmReturnPtr(__unused MMPTR ptrnum) 81{ 82 /* nothing */ 83 return; 84} 85 86