/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1991-2005 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
- */
-/* Copyright (c) 1991 NeXT Computer, Inc. All rights reserved.
- *
- * File: kern/mach_fat.c
- * Author: Peter King
- *
- * Fat file support routines.
- *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-
#include <sys/param.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <kern/cpu_number.h>
#include <mach-o/fat.h>
#include <kern/mach_loader.h>
-#include <architecture/byte_order.h>
-
-/* XXX should be in common header */
-extern int grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype);
-
-#define CPU_TYPE_NATIVE (cpu_type())
-#define CPU_TYPE_CLASSIC CPU_TYPE_POWERPC
+#include <kern/mach_fat.h>
+#include <libkern/OSByteOrder.h>
+#include <machine/exec.h>
/**********************************************************************
- * Routine: fatfile_getarch2()
+ * Routine: fatfile_getarch()
*
* Function: Locate the architecture-dependant contents of a fat
* file that match this CPU.
* KERN_FAILURE: No valid architecture found.
**********************************************************************/
static load_return_t
-fatfile_getarch2(
+fatfile_getarch(
#if 0
struct vnode *vp,
#else
int grade;
int best_grade;
int nfat_arch;
- int end_of_archs;
+ off_t end_of_archs;
+ cpu_type_t testtype;
+ cpu_type_t testsubtype;
struct fat_header *header;
#if 0
off_t filesize;
* Map portion that must be accessible directly into
* kernel's map.
*/
- nfat_arch = NXSwapBigLongToHost(header->nfat_arch);
+ nfat_arch = OSSwapBigToHostInt32(header->nfat_arch);
- end_of_archs = sizeof(struct fat_header)
- + nfat_arch * sizeof(struct fat_arch);
+ end_of_archs = (off_t)nfat_arch * sizeof(struct fat_arch) +
+ sizeof(struct fat_header);
#if 0
filesize = ubc_getsize(vp);
if (end_of_archs > (int)filesize) {
}
#endif
- /* This is beacuse we are reading only 512 bytes */
-
- if (end_of_archs > 512)
+ /*
+ * This check is limited on the top end because we are reading
+ * only PAGE_SIZE bytes
+ */
+ if (end_of_archs > PAGE_SIZE ||
+ end_of_archs < (off_t)(sizeof(struct fat_header)+sizeof(struct fat_arch)))
return(LOAD_BADMACHO);
+
/*
* Round size of fat_arch structures up to page boundry.
*/
- size = round_page_32(end_of_archs);
+ size = round_page(end_of_archs);
if (size == 0)
return(LOAD_BADMACHO);
/*
- * Scan the fat_arch's looking for the best one.
- */
+ * Scan the fat_arch's looking for the best one. */
addr = data_ptr;
best_arch = NULL;
best_grade = 0;
arch = (struct fat_arch *) (addr + sizeof(struct fat_header));
for (; nfat_arch-- > 0; arch++) {
+ testtype = OSSwapBigToHostInt32(arch->cputype);
+ testsubtype = OSSwapBigToHostInt32(arch->cpusubtype) & ~CPU_SUBTYPE_MASK;
/*
* Check to see if right cpu type.
*/
- if(((cpu_type_t)NXSwapBigIntToHost(arch->cputype) & ~mask_bits) != req_cpu_type)
+ if((testtype & ~mask_bits) != (req_cpu_type & ~mask_bits)) {
continue;
+ }
/*
- * Get the grade of the cpu subtype.
+ * Get the grade of the cpu subtype (without feature flags)
*/
- grade = grade_binary(
- NXSwapBigIntToHost(arch->cputype),
- NXSwapBigIntToHost(arch->cpusubtype));
+ grade = grade_binary(testtype, testsubtype);
/*
* Remember it if it's the best we've seen.
lret = LOAD_BADARCH;
} else {
archret->cputype =
- NXSwapBigIntToHost(best_arch->cputype);
+ OSSwapBigToHostInt32(best_arch->cputype);
archret->cpusubtype =
- NXSwapBigIntToHost(best_arch->cpusubtype);
+ OSSwapBigToHostInt32(best_arch->cpusubtype);
archret->offset =
- NXSwapBigLongToHost(best_arch->offset);
+ OSSwapBigToHostInt32(best_arch->offset);
archret->size =
- NXSwapBigLongToHost(best_arch->size);
+ OSSwapBigToHostInt32(best_arch->size);
archret->align =
- NXSwapBigLongToHost(best_arch->align);
+ OSSwapBigToHostInt32(best_arch->align);
lret = LOAD_SUCCESS;
}
return(lret);
}
-extern char classichandler[];
-
load_return_t
fatfile_getarch_affinity(
struct vnode *vp,
vm_offset_t data_ptr,
struct fat_arch *archret,
- int affinity)
-{
- load_return_t lret;
- int handler = (classichandler[0] != 0);
- cpu_type_t primary_type, fallback_type;
-
- if (handler && affinity) {
- primary_type = CPU_TYPE_CLASSIC;
- fallback_type = CPU_TYPE_NATIVE;
- } else {
- primary_type = CPU_TYPE_NATIVE;
- fallback_type = CPU_TYPE_CLASSIC;
- }
- /*
- * Ignore the architectural bits when determining if an image
- * in a fat file should be skipped or graded.
- */
- lret = fatfile_getarch2(vp, data_ptr, primary_type, CPU_ARCH_MASK, archret);
- if ((lret != 0) && handler) {
- lret = fatfile_getarch2(vp, data_ptr, fallback_type,
- 0, archret);
- }
- return lret;
-}
-
-/**********************************************************************
- * Routine: fatfile_getarch()
- *
- * Function: Locate the architecture-dependant contents of a fat
- * file that match this CPU.
- *
- * Args: vp: The vnode for the fat file.
- * header: A pointer to the fat file header.
- * archret (out): Pointer to fat_arch structure to hold
- * the results.
- *
- * Returns: KERN_SUCCESS: Valid architecture found.
- * KERN_FAILURE: No valid architecture found.
- **********************************************************************/
-load_return_t
-fatfile_getarch(
- struct vnode *vp,
- vm_offset_t data_ptr,
- struct fat_arch *archret)
+ int affinity __unused)
{
- return fatfile_getarch2(vp, data_ptr, CPU_TYPE_NATIVE, 0, archret);
+ /*
+ * Ignore all architectural bits when determining if an image
+ * in a fat file should be skipped or graded.
+ */
+ return fatfile_getarch(vp, data_ptr, cpu_type(), CPU_ARCH_MASK, archret);
}
/**********************************************************************
vm_offset_t data_ptr,
struct fat_arch *archret)
{
- return fatfile_getarch2(vp, data_ptr, archbits | CPU_TYPE_NATIVE, 0, archret);
+ return fatfile_getarch(vp, data_ptr, archbits | (cpu_type() & ~CPU_ARCH_MASK), 0, archret);
}
projects / apple / xnu.git / blobdiff