xnu-792.17.14.tar.gz

[apple/xnu.git] / osfmk / mach / i386 / fp_reg.h

diff --git a/osfmk/mach/i386/fp_reg.h b/osfmk/mach/i386/fp_reg.h
index 4357deb736c2f1150489e2485bab38f5238a0ced..87632e94477fd8bdb7bed775efe93c8ab00bf90b 100644 (file)
--- a/osfmk/mach/i386/fp_reg.h
+++ b/osfmk/mach/i386/fp_reg.h
@@ -1,16 +1,19 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @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
@@ -20,61 +23,11 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
  */
-/*
- * HISTORY
- * 
- * Revision 1.1.1.1  1998/09/22 21:05:31  wsanchez
- * Import of Mac OS X kernel (~semeria)
- *
- * Revision 1.1.1.1  1998/03/07 02:25:47  wsanchez
- * Import of OSF Mach kernel (~mburg)
- *
- * Revision 1.2.6.1  1994/09/23  02:37:03  ezf
- *     change marker to not FREE
- *     [1994/09/22  21:39:57  ezf]
- *
- * Revision 1.2.2.2  1993/06/09  02:40:30  gm
- *     Added to OSF/1 R1.3 from NMK15.0.
- *     [1993/06/02  21:16:11  jeffc]
- * 
- * Revision 1.2  1993/04/19  16:33:51  devrcs
- *     ansi C conformance changes
- *     [1993/02/02  18:56:01  david]
- * 
- * Revision 1.1  1992/09/30  02:30:43  robert
- *     Initial revision
- * 
- * $EndLog$
- */
-/* CMU_HIST */
-/*
- * Revision 2.1.1.1.2.1  92/03/03  16:21:23  jeffreyh
- *     Merged up to Trunk
- *     [92/02/26            jeffreyh]
- * 
- * Revision 2.4  92/02/26  13:10:29  elf
- *     Added stupid alaises to make i386/fpu.c compile. RVB will fix.
- *      
- *     [92/02/26            elf]
- * 
- * Revision 2.3  92/02/26  12:47:46  elf
- *     Installed from i386 directory.
- *     [92/02/26            danner]
- * 
- * 
- * Revision 2.2  92/01/03  20:19:47  dbg
- *     Move this file to mach/i386.  Add FP_NO..FP_387 codes for
- *     floating-point processor status.  Error bits in control
- *     register are masks, not enables.
- *     [91/10/19            dbg]
- * 
- */
-/* CMU_ENDHIST */
 /* 
  * Mach Operating System
  * Copyright (c) 1992-1989 Carnegie Mellon University
@@ -105,6 +58,7 @@
 
 #ifndef        _I386_FP_SAVE_H_
 #define        _I386_FP_SAVE_H_
+
 /*
  *     Floating point registers and status, as saved
  *     and restored by FP save/restore instructions.
@@ -129,6 +83,27 @@ struct i386_fp_regs {
                                        /* space for 8 80-bit FP registers */
 };
 
+/* note when allocating this data structure, it must be 16 byte aligned. */
+struct i386_fx_save {
+        unsigned short  fx_control;     /* control */
+        unsigned short  fx_status;      /* status */
+        unsigned char          fx_tag;         /* register tags */
+        unsigned char  fx_bbz1;        /* better be zero when calling fxrtstor */
+        unsigned short  fx_opcode;
+        unsigned int    fx_eip;         /* eip  instruction */
+        unsigned short  fx_cs;          /* cs instruction */
+        unsigned short  fx_bbz2;       /* better be zero when calling fxrtstor */ 
+        unsigned int    fx_dp;          /* data address */
+        unsigned short  fx_ds;          /* data segment */
+        unsigned short  fx_bbz3;       /* better be zero when calling fxrtstor */
+        unsigned int   fx_MXCSR;
+        unsigned int   fx_MXCSR_MASK;
+        unsigned short  fx_reg_word[8][8];      /* STx/MMx registers */
+        unsigned short  fx_XMM_reg[8][8];       /* XMM0-XMM7 */
+        unsigned char  fx_reserved[16*14];     /* reserved by intel for future expansion */
+};
+
+
 /*
  * Control register
  */
@@ -183,5 +158,6 @@ struct i386_fp_regs {
 #define        FP_SOFT         1               /* software FP emulator */
 #define        FP_287          2               /* 80287 */
 #define        FP_387          3               /* 80387 or 80486 */
+#define FP_FXSR                4               /* Fast save/restore SIMD Extension */
 
 #endif /* _I386_FP_SAVE_H_ */