Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/savearea.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* 2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. 7 * 8 * This file contains Original Code and/or Modifications of Original Code 9 * as defined in and that are subject to the Apple Public Source License 10 * Version 2.0 (the 'License'). You may not use this file except in 11 * compliance with the License. Please obtain a copy of the License at 12 * http://www.opensource.apple.com/apsl/ and read it before using this 13 * file. 14 * 15 * The Original Code and all software distributed under the License are 16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 20 * Please see the License for the specific language governing rights and 21 * limitations under the License. 22 * 23 * @APPLE_LICENSE_HEADER_END@ 24 */ 25 #ifndef _PPC_SAVEAREA_H_ 26 #define _PPC_SAVEAREA_H_ 27 28 #ifndef ASSEMBLER 29 30 #include <sys/appleapiopts.h> 31 32 #ifdef __APPLE_API_PRIVATE 33 34 #ifdef MACH_KERNEL_PRIVATE 35 #include <stdint.h> 36 #include <mach/vm_types.h> 37 38 #pragma pack(4) /* Make sure the structure stays as we defined it */ 39 typedef struct savearea_comm { 40 41 /* 42 * The following fields are common to all saveareas and are used to manage individual 43 * contexts. 44 * 45 * Fields that start with "save" are part of the individual saveareas. Those that 46 * start with "sac" pertain to the free pool stuff and are valid only on the first slot 47 * in the page. 48 */ 49 50 51 /* Keep the save_prev, sac_next, and sac_prev in these positions, some assembler code depends upon it to 52 * match up with fields in saveanchor. 53 */ 54 /* offset 0x000 */ 55 addr64_t save_prev; /* The address of the previous (or next) savearea */ 56 addr64_t sac_next; /* Points to next savearea page that has a free slot - real */ 57 addr64_t sac_prev; /* Points to previous savearea page that has a free slot - real */ 58 unsigned int save_level; /* Context ID */ 59 unsigned int save_01C; 60 61 /* 0x20 */ 62 unsigned int save_time[2]; /* Context save time - for debugging or performance */ 63 struct thread_activation *save_act; /* Associated activation */ 64 unsigned int save_02c; 65 uint64_t sac_vrswap; /* XOR mask to swap V to R or vice versa */ 66 unsigned int save_flags; /* Various flags */ 67 unsigned int sac_flags; /* Various flags */ 68 69 /* offset 0x040 */ 70 uint64_t save_misc0; /* Various stuff */ 71 uint64_t save_misc1; /* Various stuff */ 72 unsigned int sac_alloc; /* Bitmap of allocated slots */ 73 unsigned int save_054; 74 unsigned int save_misc2; 75 unsigned int save_misc3; 76 77 /* offset 0x0060 */ 78 } savearea_comm; 79 #pragma pack() 80 #endif 81 82 #ifdef BSD_KERNEL_PRIVATE 83 typedef struct savearea_comm { 84 unsigned int save_000[24]; 85 } savearea_comm; 86 #endif 87 88 #if defined(MACH_KERNEL_PRIVATE) || defined(BSD_KERNEL_PRIVATE) 89 /* 90 * This type of savearea contains all of the general context. 91 */ 92 93 #pragma pack(4) /* Make sure the structure stays as we defined it */ 94 typedef struct savearea { 95 96 savearea_comm save_hdr; /* Stuff common to all saveareas */ 97 98 unsigned int save_060[8]; /* Fill 32 bytes */ 99 100 /* offset 0x0080 */ 101 uint64_t save_r0; 102 uint64_t save_r1; 103 uint64_t save_r2; 104 uint64_t save_r3; 105 /* offset 0x0A0 */ 106 uint64_t save_r4; 107 uint64_t save_r5; 108 uint64_t save_r6; 109 uint64_t save_r7; 110 /* offset 0x0C0 */ 111 uint64_t save_r8; 112 uint64_t save_r9; 113 uint64_t save_r10; 114 uint64_t save_r11; 115 /* offset 0x0E0 */ 116 uint64_t save_r12; 117 uint64_t save_r13; 118 uint64_t save_r14; 119 uint64_t save_r15; 120 /* offset 0x100 */ 121 uint64_t save_r16; 122 uint64_t save_r17; 123 uint64_t save_r18; 124 uint64_t save_r19; 125 /* offset 0x120 */ 126 uint64_t save_r20; 127 uint64_t save_r21; 128 uint64_t save_r22; 129 uint64_t save_r23; 130 /* offset 0x140 */ 131 uint64_t save_r24; 132 uint64_t save_r25; 133 uint64_t save_r26; 134 uint64_t save_r27; 135 /* offset 0x160 */ 136 uint64_t save_r28; 137 uint64_t save_r29; 138 uint64_t save_r30; 139 uint64_t save_r31; 140 /* offset 0x180 */ 141 uint64_t save_srr0; 142 uint64_t save_srr1; 143 uint64_t save_xer; 144 uint64_t save_lr; 145 /* offset 0x1A0 */ 146 uint64_t save_ctr; 147 uint64_t save_dar; 148 unsigned int save_cr; 149 unsigned int save_dsisr; 150 unsigned int save_exception; 151 unsigned int save_vrsave; 152 /* offset 0x1C0 */ 153 unsigned int save_vscr[4]; 154 unsigned int save_fpscrpad; 155 unsigned int save_fpscr; 156 unsigned int save_1d8[2]; 157 /* offset 0x1E0 */ 158 unsigned int save_1E0[8]; 159 /* offset 0x200 - keep on 128 byte bndry */ 160 uint32_t save_pmc[8]; 161 uint64_t save_mmcr0; /* offset 0x220 */ 162 uint64_t save_mmcr1; 163 uint64_t save_mmcr2; 164 165 unsigned int save_238[2]; 166 /* offset 0x240 */ 167 unsigned int save_instr[16]; /* Instrumentation */ 168 /* offset 0x280 */ 169 } savearea; 170 #pragma pack() 171 172 173 /* 174 * This type of savearea contains all of the floating point context. 175 */ 176 177 #pragma pack(4) /* Make sure the structure stays as we defined it */ 178 typedef struct savearea_fpu { 179 180 savearea_comm save_hdr; /* Stuff common to all saveareas */ 181 182 unsigned int save_060[8]; /* Fill 32 bytes */ 183 /* offset 0x0080 */ 184 double save_fp0; 185 double save_fp1; 186 double save_fp2; 187 double save_fp3; 188 189 double save_fp4; 190 double save_fp5; 191 double save_fp6; 192 double save_fp7; 193 194 double save_fp8; 195 double save_fp9; 196 double save_fp10; 197 double save_fp11; 198 199 double save_fp12; 200 double save_fp13; 201 double save_fp14; 202 double save_fp15; 203 204 double save_fp16; 205 double save_fp17; 206 double save_fp18; 207 double save_fp19; 208 209 double save_fp20; 210 double save_fp21; 211 double save_fp22; 212 double save_fp23; 213 214 double save_fp24; 215 double save_fp25; 216 double save_fp26; 217 double save_fp27; 218 219 double save_fp28; 220 double save_fp29; 221 double save_fp30; 222 double save_fp31; 223 /* offset 0x180 */ 224 unsigned int save_180[8]; 225 unsigned int save_1A0[8]; 226 unsigned int save_1C0[8]; 227 unsigned int save_1E0[8]; 228 unsigned int save_200[8]; 229 unsigned int save_220[8]; 230 unsigned int save_240[8]; 231 unsigned int save_260[8]; 232 233 /* offset 0x280 */ 234 } savearea_fpu; 235 #pragma pack() 236 237 238 239 /* 240 * This type of savearea contains all of the vector context. 241 */ 242 243 #pragma pack(4) /* Make sure the structure stays as we defined it */ 244 typedef struct savearea_vec { 245 246 savearea_comm save_hdr; /* Stuff common to all saveareas */ 247 248 unsigned int save_060[7]; /* Fill 32 bytes */ 249 unsigned int save_vrvalid; /* Valid registers in saved context */ 250 251 /* offset 0x0080 */ 252 unsigned int save_vr0[4]; 253 unsigned int save_vr1[4]; 254 unsigned int save_vr2[4]; 255 unsigned int save_vr3[4]; 256 unsigned int save_vr4[4]; 257 unsigned int save_vr5[4]; 258 unsigned int save_vr6[4]; 259 unsigned int save_vr7[4]; 260 unsigned int save_vr8[4]; 261 unsigned int save_vr9[4]; 262 unsigned int save_vr10[4]; 263 unsigned int save_vr11[4]; 264 unsigned int save_vr12[4]; 265 unsigned int save_vr13[4]; 266 unsigned int save_vr14[4]; 267 unsigned int save_vr15[4]; 268 unsigned int save_vr16[4]; 269 unsigned int save_vr17[4]; 270 unsigned int save_vr18[4]; 271 unsigned int save_vr19[4]; 272 unsigned int save_vr20[4]; 273 unsigned int save_vr21[4]; 274 unsigned int save_vr22[4]; 275 unsigned int save_vr23[4]; 276 unsigned int save_vr24[4]; 277 unsigned int save_vr25[4]; 278 unsigned int save_vr26[4]; 279 unsigned int save_vr27[4]; 280 unsigned int save_vr28[4]; 281 unsigned int save_vr29[4]; 282 unsigned int save_vr30[4]; 283 unsigned int save_vr31[4]; 284 285 /* offset 0x280 */ 286 } savearea_vec; 287 #pragma pack() 288 #endif /* MACH_KERNEL_PRIVATE || BSD_KERNEL_PRIVATE */ 289 290 #ifdef MACH_KERNEL_PRIVATE 291 292 #pragma pack(4) /* Make sure the structure stays as we defined it */ 293 struct Saveanchor { 294 295 /* 296 * Note that this force aligned in aligned_data.s and must be in V=R storage. 297 * Also, all addresses in chains are physical. This structure can only be 298 * updated with translation and interrupts disabled. This is because it is 299 * locked during exception processing and if we were to take a PTE miss while the 300 * lock were held, well, that would be very bad now wouldn't it? 301 * Note that the first 24 bytes must be the same format as a savearea header. 302 */ 303 304 unsigned int savelock; /* 000 Lock word for savearea free list manipulation */ 305 int saveRSVD4; /* 004 reserved */ 306 addr64_t savepoolfwd; /* 008 Forward anchor for the free pool */ 307 addr64_t savepoolbwd; /* 010 Backward anchor for the free pool */ 308 volatile addr64_t savefree; /* 018 Anchor for the global free list */ 309 volatile unsigned int savefreecnt; /* 020 Number of saveareas on global free list */ 310 volatile int saveadjust; /* 024 If 0 number of saveareas is ok, otherwise # to change (pos means grow, neg means shrink */ 311 volatile int saveinuse; /* 028 Number of areas in use counting those on the local free list */ 312 volatile int savetarget; /* 02C Number of savearea's needed */ 313 int savemaxcount; /* 030 Maximum saveareas ever allocated */ 314 unsigned int saveRSVD034[3]; /* 034 reserved */ 315 /* 040 */ 316 317 }; 318 #pragma pack() 319 320 321 #define sac_cnt (4096 / sizeof(savearea)) /* Number of saveareas per page */ 322 #define sac_empty (0xFFFFFFFF << (32 - sac_cnt)) /* Mask with all entries empty */ 323 #define sac_perm 0x40000000 /* Page permanently assigned */ 324 #define sac_permb 1 /* Page permanently assigned - bit position */ 325 326 #define LocalSaveTarget (((8 + sac_cnt - 1) / sac_cnt) * sac_cnt) /* Target for size of local savearea free list */ 327 #define LocalSaveMin (LocalSaveTarget / 2) /* Min size of local savearea free list before we grow */ 328 #define LocalSaveMax (LocalSaveTarget * 2) /* Max size of local savearea free list before we trim */ 329 330 #define FreeListMin (2 * LocalSaveTarget * NCPUS) /* Always make sure there are enough to fill local list twice per processor */ 331 #define SaveLowHysteresis LocalSaveTarget /* The number off from target before we adjust upwards */ 332 #define SaveHighHysteresis FreeListMin /* The number off from target before we adjust downwards */ 333 #define InitialSaveAreas (2 * FreeListMin) /* The number of saveareas to make at boot time */ 334 #define InitialSaveTarget FreeListMin /* The number of saveareas for an initial target. This should be the minimum ever needed. */ 335 #define InitialSaveBloks (InitialSaveAreas + sac_cnt - 1) / sac_cnt /* The number of savearea blocks to allocate at boot */ 336 #define BackPocketSaveBloks 8 /* Number of pages of back pocket saveareas */ 337 338 void save_queue(ppnum_t); /* Add a new savearea block to the free list */ 339 addr64_t save_get_init(void); /* special savearea-get for cpu initialization (returns physical address) */ 340 struct savearea *save_get(void); /* Obtains a savearea from the free list (returns virtual address) */ 341 reg64_t save_get_phys_32(void); /* Obtains a savearea from the free list (returns phys addr in r3) */ 342 reg64_t save_get_phys_64(void); /* Obtains a savearea from the free list (returns phys addr in r3) */ 343 struct savearea *save_alloc(void); /* Obtains a savearea and allocates blocks if needed */ 344 struct savearea *save_cpv(addr64_t); /* Converts a physical savearea address to virtual */ 345 void save_ret(struct savearea *); /* Returns a savearea to the free list by virtual address */ 346 void save_ret_wMSR(struct savearea *, reg64_t); /* returns a savearea and restores an MSR */ 347 void save_ret_phys(reg64_t); /* Returns a savearea to the free list by physical address */ 348 void save_adjust(void); /* Adjust size of the global free list */ 349 struct savearea_comm *save_trim_free(void); /* Remove free pages from savearea pool */ 350 int save_recover(void); /* returns nonzero if we can recover enough from the free pool */ 351 void savearea_init(vm_offset_t addr); /* Boot-time savearea initialization */ 352 353 354 #endif /* MACH_KERNEL_PRIVATE */ 355 #endif /* __APPLE_API_PRIVATE */ 356 357 #endif /* ndef ASSEMBLER */ 358 359 #define SAVattach 0x80000000 /* Savearea has valid context */ 360 #define SAVrststk 0x00010000 /* Indicates that the current stack should be reset to empty */ 361 #define SAVsyscall 0x00020000 /* Indicates that the savearea is associated with a syscall */ 362 #define SAVredrive 0x00040000 /* Indicates that the low-level fault handler associated */ 363 #define SAVredriveb 13 /* Indicates that the low-level fault handler associated */ 364 #define SAVinstrument 0x00080000 /* Indicates that we should return instrumentation data */ 365 #define SAVinstrumentb 12 /* Indicates that we should return instrumentation data */ 366 #define SAVtype 0x0000FF00 /* Shows type of savearea */ 367 #define SAVtypeshft 8 /* Shift to position type */ 368 #define SAVempty 0x86 /* Savearea is on free list */ 369 #define SAVgeneral 0x01 /* Savearea contains general context */ 370 #define SAVfloat 0x02 /* Savearea contains floating point context */ 371 #define SAVvector 0x03 /* Savearea contains vector context */ 372 373 374 375 #endif /* _PPC_SAVEAREA_H_ */
Cache object: bcfc917c79cec6b60a588332e5fdff56
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]