usr/src/uts/sparc/sys/regset.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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  22 /*      All Rights Reserved     */
  23
  24
  25 /*
  26  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
  27  *
  28  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  29  * Use is subject to license terms.
  30  */
  31
  32 #ifndef _SYS_REGSET_H
  33 #define _SYS_REGSET_H
  34
  35 #include <sys/feature_tests.h>
  36
  37 #if !defined(_ASM)
  38 #include <sys/int_types.h>
  39 #endif
  40 #include <sys/mcontext.h>
  41
  42 #ifdef  __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 /*
  47  * Location of the users' stored registers relative to R0.
  48  * Usage is as an index into a gregset_t array or as u.u_ar0[XX].
  49  */
  50 #if defined(__sparcv9)
  51 #define REG_CCR (0)
  52 #if defined(_SYSCALL32)
  53 #define REG_PSR (0)
  54 #endif /* _SYSCALL32 */
  55 #else
  56 #define REG_PSR (0)
  57 #endif  /* __sparcv9 */
  58
  59 #define REG_PC  (1)
  60 #define REG_nPC (2)
  61 #define REG_Y   (3)
  62 #define REG_G1  (4)
  63 #define REG_G2  (5)
  64 #define REG_G3  (6)
  65 #define REG_G4  (7)
  66 #define REG_G5  (8)
  67 #define REG_G6  (9)
  68 #define REG_G7  (10)
  69 #define REG_O0  (11)
  70 #define REG_O1  (12)
  71 #define REG_O2  (13)
  72 #define REG_O3  (14)
  73 #define REG_O4  (15)
  74 #define REG_O5  (16)
  75 #define REG_O6  (17)
  76 #define REG_O7  (18)
  77 #if defined(__sparcv9)
  78 #define REG_ASI (19)
  79 #define REG_FPRS (20)
  80 #endif  /* __sparcv9 */
  81
  82 /* the following defines are for portability */
  83 #if !defined(__sparcv9)
  84 #define REG_PS  REG_PSR
  85 #endif  /* __sparcv9 */
  86 #define REG_SP  REG_O6
  87 #define REG_R0  REG_O0
  88 #define REG_R1  REG_O1
  89
  90 #ifndef _ASM
  91
  92 #define NGREG   _NGREG
  93 #define MAXFPQ  _MAXFPQ
  94
  95 /*
  96  * The following structures define how a register window can appear on the
  97  * stack. This structure is available (when required) through the `gwins'
  98  * field of an mcontext (nested within ucontext). SPARC_MAXWINDOW is the
  99  * maximum number of outstanding regiters window defined in the SPARC
 100  * architecture (*not* implementation).
 101  */
 102 #define SPARC_MAXREGWINDOW      31      /* max windows in SPARC arch. */
 103
 104 struct  rwindow {
 105         greg_t  rw_local[8];            /* locals */
 106         greg_t  rw_in[8];               /* ins */
 107 };
 108
 109 #if defined(_SYSCALL32)
 110
 111 struct rwindow32 {
 112         greg32_t rw_local[8];           /* locals */
 113         greg32_t rw_in[8];              /* ins */
 114 };
 115
 116 struct rwindow64 {
 117         greg64_t rw_local[8];           /* locals */
 118         greg64_t rw_in[8];              /* ins */
 119 };
 120
 121 #if defined(_KERNEL)
 122 extern  void    rwindow_nto32(struct rwindow *, struct rwindow32 *);
 123 extern  void    rwindow_32ton(struct rwindow32 *, struct rwindow *);
 124 #endif
 125
 126 #endif  /* _SYSCALL32 */
 127
 128 #define rw_fp   rw_in[6]                /* frame pointer */
 129 #define rw_rtn  rw_in[7]                /* return address */
 130
 131 typedef struct _gwindows {
 132         int             wbcnt;
 133         greg_t          *spbuf[SPARC_MAXREGWINDOW];
 134         struct rwindow  wbuf[SPARC_MAXREGWINDOW];
 135 } gwindows_t;
 136
 137 #if defined(_SYSCALL32)
 138
 139 typedef struct gwindows32 {
 140         int32_t         wbcnt;
 141         caddr32_t       spbuf[SPARC_MAXREGWINDOW];
 142         struct rwindow32 wbuf[SPARC_MAXREGWINDOW];
 143 } gwindows32_t;
 144
 145 typedef struct gwindows64 {
 146         int             wbcnt;
 147         greg64_t        *spbuf[SPARC_MAXREGWINDOW];
 148         struct rwindow64 wbuf[SPARC_MAXREGWINDOW];
 149 } gwindows64_t;
 150
 151 #endif  /* _SYSCALL32 */
 152
 153 /*
 154  * The following #define's are obsolete and may be removed in a future release.
 155  * The corresponding integer types should be used instead (i.e. uint64_t).
 156  */
 157 #define FPU_REGS_TYPE           uint32_t
 158 #define FPU_DREGS_TYPE          uint64_t
 159 #define V7_FPU_FSR_TYPE         uint32_t
 160 #define V9_FPU_FSR_TYPE         uint64_t
 161 #define V9_FPU_FPRS_TYPE        uint32_t
 162
 163 #define XRS_ID                  _XRS_ID
 164
 165 #endif  /* !_ASM */
 166
 167 /*
 168  * The version of privregs.h that is used on implementations that run
 169  * on processors that support the V9 instruction set is deliberately not
 170  * imported here.
 171  *
 172  * The V9 'struct regs' definition is -not- compatible with either 32-bit
 173  * or 64-bit core file contents, nor with the ucontext.  As a result, the
 174  * 'regs' structure cannot be used portably by applications, and should
 175  * only be used by the kernel implementation.
 176  *
 177  * The inclusion of the SPARC V7 version of privregs.h allows for some
 178  * limited source compatibility with 32-bit applications who expect to use
 179  * 'struct regs' to match the content of a 32-bit core file, or a ucontext_t.
 180  *
 181  * Note that the ucontext_t actually describes the general registers in
 182  * terms of the gregset_t data type, as described in mcontex.h.  Note also
 183  * that the core file content is defined by core(5) in terms of data types
 184  * defined by procfs -- see proc(5).
 185  */
 186 #if !defined(__sparcv9)
 187 #if !defined(_KERNEL) && !defined(_XPG4_2) || defined(__EXTENSIONS__)
 188 #include <v7/sys/privregs.h>
 189 #endif  /* !_KERNEL && !_XPG4_2 || __EXTENSIONS__ */
 190 #endif  /* __sparcv9 */
 191
 192 #ifdef  __cplusplus
 193 }
 194 #endif
 195
 196 #endif  /* _SYS_REGSET_H */