xnu-517.3.15.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 39b6c761c453ede8dc113c0eeda5f2ae9eea6305..169f069f0c3705c1b10202d5c15158f4cde7f86b 100644 (file)
--- a/osfmk/mach/i386/fp_reg.h
+++ b/osfmk/mach/i386/fp_reg.h
@@ -3,19 +3,22 @@
  *
  * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
+ * 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.
+ * 
+ * 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,
- * 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@
  */
@@ -126,6 +129,27 @@ 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
  */
@@ -180,5 +204,6 @@ 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_ */