usr/src/uts/sun4/sys/scb.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1991, by Sun Microsystems, Inc.
  24  */
  25
  26 #ifndef _SYS_SCB_H
  27 #define _SYS_SCB_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #define VEC_MIN 0
  36 #define VEC_MAX 255
  37 #define AUTOBASE        16              /* base for autovectored ints */
  38
  39 #ifndef _ASM
  40
  41 typedef struct trapvec {
  42         int     instr[8];
  43 } trapvec;
  44
  45 /*
  46  * Sparc9 System control block layout
  47  */
  48 struct scb {
  49         trapvec tl0_hwtraps[256];       /* 0 - 255 tl0 hw traps */
  50         trapvec tl0_swtraps[256];       /* 256 - 511 tl0 sw traps */
  51         trapvec tl1_hwtraps[256];       /* 512 - 767 tl>0 hw traps */
  52         /* we don't use tl>0 sw traps */
  53 };
  54
  55 #ifdef _KERNEL
  56 extern  struct scb scb;
  57 #endif /* _KERNEL */
  58
  59 #endif /* _ASM */
  60
  61 /*
  62  * These defines are used by the TL1 tlb miss handlers to calculate
  63  * the pc to jump to in the case the entry was not found in the TSB.
  64  */
  65 #define WTRAP_ALIGN     0x7f    /* window handlers are 128 byte align */
  66 #define WTRAP_FAULTOFF  124     /* last instruction in handler */
  67
  68 /* use the following defines to determine if trap was a fill or a spill */
  69 #define WTRAP_TTMASK    0x180
  70 #define WTRAP_TYPE      0x080
  71
  72
  73 #ifdef  __cplusplus
  74 }
  75 #endif
  76
  77 #endif  /* _SYS_SCB_H */