osfmk/ppc/aligned_data.s

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  *              This module only exists because I don't know how to get the silly C compiler
  24  *              and/or linker to generate data areas that are aligned on a particular boundary.
  25  *              And, this stuff is in the V=R mapped area.
  26  *
  27  *              Do the following for each:
  28  *
  29  *                              .size   name,size-in-bytes
  30  *                              .type   area-name,@object
  31  *                              .globl  area-name
  32  *                              .align  power-of-two
  33  *              area-name:
  34  *                              .set    .,.+size-in-bytes
  35  *
  36  *              So long as I'm being pedantic, always make sure that the most aligned,
  37  *              i.e., the largest power-of-twos, are first and then descend to the smallest.
  38  *              If you don't, and you are not careful and hand calculate, you'll end up
  39  *              with holes and waste storage.  I hate C.
  40  *
  41  *              Define the sizes in genassym.c
  42  */
  43
  44
  45 #include <debug.h>
  46 #include <cpus.h>
  47 #include <ppc/asm.h>
  48 #include <ppc/proc_reg.h>
  49 #include <assym.s>
  50
  51 ;
  52 ;               NOTE: We need this only if PREEMPTSTACK is set to non-zero in hw_lock.
  53 ;               Make sure they are set to the same thing
  54 ;
  55 #define PREEMPTSTACK 0
  56
  57                         .data
  58
  59 /*              1024-byte aligned areas */
  60
  61                 .globl  EXT(per_proc_info)
  62                 .align  10
  63 EXT(per_proc_info):                                                                     ; Per processor data area
  64                 .fill   (ppSize*NCPUS)/4,4,0                            ; (filled with 0s)
  65
  66 /*              512-byte aligned areas */
  67
  68                 .globl  EXT(kernel_pmap_store)                          ; This is the kernel_pmap
  69                 .align  8
  70 EXT(kernel_pmap_store):
  71                 .set    .,.+PMAP_SIZE
  72
  73
  74 /*              256-byte aligned areas */
  75
  76                 .globl  EXT(GratefulDebWork)
  77                 .align  8
  78 EXT(GratefulDebWork):                                                           ; Enough for 2 rows of 8 chars of 16-pixel wide 32-bit pixels and a 256 byte work area
  79                 .set    .,.+2560
  80
  81                 .globl  debstash
  82                 .align  8
  83 debstash:
  84                 .set    .,.+256
  85
  86                 .globl  EXT(hw_counts)                                          ; Counter banks per processor
  87                 .align  8
  88 EXT(hw_counts):
  89                 .set    .,.+(NCPUS*256)
  90
  91 #if PREEMPTSTACK
  92
  93 ;
  94 ;               NOTE: We need this only if PREEMPTSTACK is set to non-zero in hw_lock.
  95 ;
  96
  97                 .globl  EXT(DBGpreempt)                                         ; preemption debug stack
  98                 .align  8
  99 EXT(DBGpreempt):
 100                 .set    .,.+(NCPUS*PREEMPTSTACK*16)
 101 #endif
 102
 103
 104 /*              128-byte aligned areas */
 105
 106                 .globl  EXT(saveanchor)
 107                 .align  7
 108 EXT(saveanchor):
 109                 .set    .,.+SVsize
 110
 111                 .globl  EXT(mapCtl)
 112                 .align  7
 113 EXT(mapCtl):
 114                 .set    .,.+mapcsize
 115
 116                 .globl  EXT(trcWork)
 117                 .align  7
 118 EXT(trcWork):
 119                 .long   EXT(traceTableBeg)                                      ; The next trace entry to use
 120 #if DEBUG
 121 /*              .long   0x02000000      */                                              /* Only alignment exceptions enabled */
 122                 .long   0xFFFFFFFF                                                      /* All enabled */
 123 /*              .long   0xFBBFFFFF      */                                              /* EXT and DEC disabled */
 124 /*              .long   0xFFBFFFFF      */                                              /* DEC disabled */
 125 #else
 126                 .long   0x00000000                                                      ; All disabled on non-debug systems
 127 #endif
 128                 .long   EXT(traceTableBeg)                                      ; Start of the trace table
 129                 .long   EXT(traceTableEnd)                                      ; End (wrap point) of the trace
 130                 .long   0                                                                       ; Saved mask while in debugger
 131
 132                 .long   0
 133                 .long   0
 134                 .long   0
 135
 136
 137                 .globl  fwdisplock
 138                 .align  7
 139 fwdisplock:
 140                 .set    .,.+128
 141
 142                 .globl  EXT(free_mappings)
 143                 .align  7
 144
 145 EXT(free_mappings):
 146                 .long   0
 147
 148                 .globl  EXT(syncClkSpot)
 149                 .align  7
 150 EXT(syncClkSpot):
 151                 .long   0
 152                 .long   0
 153                 .long   0
 154                 .long   0
 155                 .long   0
 156                 .long   0
 157                 .long   0
 158                 .long   0
 159
 160                 .globl  EXT(NMIss)
 161                 .align  7
 162 EXT(NMIss):
 163                 .long   0
 164                 .long   0
 165                 .long   0
 166                 .long   0
 167                 .long   0
 168                 .long   0
 169                 .long   0
 170                 .long   0
 171
 172 /*              32-byte aligned areas */
 173
 174                 .globl  EXT(dbvecs)
 175                 .align  5
 176 EXT(dbvecs):
 177                 .set    .,.+(33*16)
 178
 179                 .globl  hexfont
 180                 .align  5
 181 #include <ppc/hexfont.h>
 182
 183         .globl  EXT(QNaNbarbarian)
 184                 .align  5
 185
 186 EXT(QNaNbarbarian):
 187                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 188                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 189                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 190                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 191
 192                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 193                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 194                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 195                 .long   0x7FFFDEAD                                                      /* This is a quiet not-a-number which is a "known" debug value */
 196
 197                 .globl  EXT(dgWork)
 198                 .align  5
 199 EXT(dgWork):
 200                 .long   0
 201                 .long   0
 202                 .long   0
 203                 .long   0
 204                 .long   0
 205                 .long   0
 206                 .long   0
 207                 .long   0
 208
 209
 210 /*              8-byte aligned areas */
 211
 212         .globl  EXT(FloatInit)
 213                 .align  3
 214
 215 EXT(FloatInit):
 216                 .long   0xC24BC195                                                      /* Initial value */
 217                 .long   0x87859393                                                      /* of floating point registers */
 218                 .long   0xE681A2C8                                                      /* and others */
 219                 .long   0x8599855A
 220
 221                 .globl  EXT(DebugWork)
 222                 .align  3
 223
 224 EXT(DebugWork):
 225                 .long   0
 226                 .long   0
 227                 .long   0
 228                 .long   0
 229
 230         .globl  EXT(dbfloats)
 231                 .align  3
 232 EXT(dbfloats):
 233                 .set    .,.+(33*8)
 234
 235                 .globl  EXT(dbspecrs)
 236                 .align  3
 237 EXT(dbspecrs):
 238                 .set    .,.+(80*4)