xnu-3248.20.55.tar.gz

[apple/xnu.git] / bsd / dev / i386 / kern_machdep.c

diff --git a/bsd/dev/i386/kern_machdep.c b/bsd/dev/i386/kern_machdep.c
index 0c3684b58f8f883165baa85bd55defa3fd95e4d2..4d7891ba4cc1a7f16ae64bec7c2c6cade28bfefe 100644 (file)
--- a/bsd/dev/i386/kern_machdep.c
+++ b/bsd/dev/i386/kern_machdep.c
@@ -1,23 +1,29 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2013 Apple Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * 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.
+ * 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  *     Copyright (C) 1990,  NeXT, Inc.
  */
 /*
  *     Copyright (C) 1990,  NeXT, Inc.


@@ -26,145 +32,54 @@
  *     Author: John Seamons
  *
  *     Machine-specific kernel routines.
  *     Author: John Seamons
  *
  *     Machine-specific kernel routines.

- *
- *  8-Dec-91  Peter King (king) at NeXT
- *     Added grade_cpu_subtype().
- *     FIXME: Do we want to merge this with check_cpu_subtype()?
- *
- *  5-Mar-90  John Seamons (jks) at NeXT
- *     Created.

  */
 
 #include       <sys/types.h>
 #include       <mach/machine.h>
 #include       <kern/cpu_number.h>
  */
 
 #include       <sys/types.h>
 #include       <mach/machine.h>
 #include       <kern/cpu_number.h>

+#include       <machine/exec.h>
+#include       <machine/machine_routines.h>

 
 

-check_cpu_subtype (cpu_subtype)
-       cpu_subtype_t cpu_subtype;
+/**********************************************************************
+ * Routine:    grade_binary()
+ *
+ * Function:   Say OK to CPU types that we can actually execute on the given
+ *             system. 64-bit binaries have the highest preference, followed
+ *             by 32-bit binaries. 0 means unsupported.
+ **********************************************************************/
+int
+grade_binary(cpu_type_t exectype, cpu_subtype_t execsubtype)

 {
 {

-       struct machine_slot *ms = &machine_slot[cpu_number()];
-       
-       switch (ms->cpu_subtype) {
-           case CPU_SUBTYPE_386:
-               if (cpu_subtype == CPU_SUBTYPE_386)
-                   return (TRUE);
-               break;
-
-           case CPU_SUBTYPE_486:
-           case CPU_SUBTYPE_486SX:
-               if (    cpu_subtype == CPU_SUBTYPE_486          ||
-                       cpu_subtype == CPU_SUBTYPE_486SX        ||
-                       cpu_subtype == CPU_SUBTYPE_386          )
-                   return (TRUE);
-               break;
-
-           case CPU_SUBTYPE_586:
-               if (    cpu_subtype == CPU_SUBTYPE_586          ||
-                       cpu_subtype == CPU_SUBTYPE_486          ||
-                       cpu_subtype == CPU_SUBTYPE_486SX        ||
-                       cpu_subtype == CPU_SUBTYPE_386          )
-                   return (TRUE);
-               break;
-
-           default:
-               if (    CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
-                       CPU_SUBTYPE_INTEL_MODEL_ALL) {
-                   if (        CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
-                               CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
-                       return (TRUE);
-               }
-               else {
-                   if (        ms->cpu_subtype == cpu_subtype)
-                       return (TRUE);
+       cpu_subtype_t hostsubtype = cpu_subtype();
+
+       switch(exectype) {
+       case CPU_TYPE_X86_64:           /* native 64-bit */
+               switch(hostsubtype) {
+               case CPU_SUBTYPE_X86_64_H:      /* x86_64h can execute anything */
+                       switch (execsubtype) {
+                       case CPU_SUBTYPE_X86_64_H:
+                               return 3;
+                       case CPU_SUBTYPE_X86_64_ALL:
+                               return 2;
+                       }
+                       break;
+               case CPU_SUBTYPE_X86_ARCH1:     /* generic systems can only execute ALL subtype */
+                       switch (execsubtype) {
+                       case CPU_SUBTYPE_X86_64_ALL:
+                               return 2;
+                       }
+                       break;

                }
                break;
                }
                break;

+       case CPU_TYPE_X86:              /* native */
+               return 1;

        }
 
        }
 

-       return (FALSE);
+       return 0;

 }
 
 }
 

-/**********************************************************************
- * Routine:    grade_cpu_subtype()
- *
- * Function:   Return a relative preference for cpu_subtypes in fat
- *             executable files.  The higher the grade, the higher the
- *             preference.  A grade of 0 means not acceptable.
- **********************************************************************/
-grade_cpu_subtype (cpu_subtype)
-       cpu_subtype_t           cpu_subtype;
+boolean_t
+pie_required(cpu_type_t exectype __unused, cpu_subtype_t execsubtype __unused)

 {
 {

-       struct machine_slot     *ms = &machine_slot[cpu_number()];
-
-       switch (ms->cpu_subtype) {
-           case CPU_SUBTYPE_386:
-               switch (cpu_subtype) {
-                   case CPU_SUBTYPE_386:
-                       return 1;
-                   default:
-                       return 0;
-               }
-
-           case CPU_SUBTYPE_486:
-               switch (cpu_subtype) {
-                   case CPU_SUBTYPE_386:
-                       return 1;
-
-                   case CPU_SUBTYPE_486SX:
-                       return 2;
-
-                   case CPU_SUBTYPE_486:
-                       return 3;
-
-                   default:
-                       return 0;
-               }
-
-           case CPU_SUBTYPE_486SX:
-               switch (cpu_subtype) {
-                   case CPU_SUBTYPE_386:
-                       return 1;
-
-                   case CPU_SUBTYPE_486:
-                       return 2;
-
-                   case CPU_SUBTYPE_486SX:
-                       return 3;
-
-                   default:
-                       return 0;
-               }
-
-           case CPU_SUBTYPE_586:
-               switch (cpu_subtype) {
-                   case CPU_SUBTYPE_386:
-                       return 1;
-
-                   case CPU_SUBTYPE_486SX:
-                       return 2;
-
-                   case CPU_SUBTYPE_486:
-                       return 3;
-
-                   case CPU_SUBTYPE_586:
-                       return 4;
-
-                   default:
-                       return 0;
-               }
-
-           default:
-               if (    CPU_SUBTYPE_INTEL_MODEL(cpu_subtype) ==
-                       CPU_SUBTYPE_INTEL_MODEL_ALL) {
-                   if (        CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) >=
-                               CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype))
-                       return CPU_SUBTYPE_INTEL_FAMILY_MAX - 
-                           CPU_SUBTYPE_INTEL_FAMILY(ms->cpu_subtype) -
-                           CPU_SUBTYPE_INTEL_FAMILY(cpu_subtype);
-               }
-               else {
-                   if (        ms->cpu_subtype == cpu_subtype)
-                       return CPU_SUBTYPE_INTEL_FAMILY_MAX + 1;
-               }
-               return 0;
-       }
+       return FALSE;

 }
 }