nkeynes@359 | 1 | /**
|
nkeynes@586 | 2 | * $Id$
|
nkeynes@359 | 3 | *
|
nkeynes@359 | 4 | * Translation cache management. This part is architecture independent.
|
nkeynes@359 | 5 | *
|
nkeynes@359 | 6 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@359 | 7 | *
|
nkeynes@359 | 8 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@359 | 9 | * it under the terms of the GNU General Public License as published by
|
nkeynes@359 | 10 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@359 | 11 | * (at your option) any later version.
|
nkeynes@359 | 12 | *
|
nkeynes@359 | 13 | * This program is distributed in the hope that it will be useful,
|
nkeynes@359 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@359 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@359 | 16 | * GNU General Public License for more details.
|
nkeynes@359 | 17 | */
|
nkeynes@736 | 18 |
|
nkeynes@488 | 19 | #include <sys/types.h>
|
nkeynes@359 | 20 | #include <sys/mman.h>
|
nkeynes@359 | 21 | #include <assert.h>
|
nkeynes@359 | 22 |
|
nkeynes@428 | 23 | #include "dreamcast.h"
|
nkeynes@586 | 24 | #include "sh4/sh4core.h"
|
nkeynes@428 | 25 | #include "sh4/xltcache.h"
|
nkeynes@428 | 26 | #include "x86dasm/x86dasm.h"
|
nkeynes@428 | 27 |
|
nkeynes@359 | 28 | #define XLAT_LUT_PAGE_BITS 12
|
nkeynes@359 | 29 | #define XLAT_LUT_TOTAL_BITS 28
|
nkeynes@359 | 30 | #define XLAT_LUT_PAGE(addr) (((addr)>>13) & 0xFFFF)
|
nkeynes@359 | 31 | #define XLAT_LUT_ENTRY(addr) (((addr)&0x1FFE) >> 1)
|
nkeynes@359 | 32 |
|
nkeynes@359 | 33 | #define XLAT_LUT_PAGES (1<<(XLAT_LUT_TOTAL_BITS-XLAT_LUT_PAGE_BITS))
|
nkeynes@359 | 34 | #define XLAT_LUT_PAGE_ENTRIES (1<<XLAT_LUT_PAGE_BITS)
|
nkeynes@359 | 35 | #define XLAT_LUT_PAGE_SIZE (XLAT_LUT_PAGE_ENTRIES * sizeof(void *))
|
nkeynes@359 | 36 |
|
nkeynes@359 | 37 | #define XLAT_LUT_ENTRY_EMPTY (void *)0
|
nkeynes@359 | 38 | #define XLAT_LUT_ENTRY_USED (void *)1
|
nkeynes@359 | 39 |
|
nkeynes@359 | 40 | #define NEXT(block) ( (xlat_cache_block_t)&((block)->code[(block)->size]))
|
nkeynes@359 | 41 | #define IS_ENTRY_POINT(ent) (ent > XLAT_LUT_ENTRY_USED)
|
nkeynes@359 | 42 | #define IS_ENTRY_USED(ent) (ent != XLAT_LUT_ENTRY_EMPTY)
|
nkeynes@359 | 43 |
|
nkeynes@359 | 44 | #define MIN_BLOCK_SIZE 32
|
nkeynes@359 | 45 | #define MIN_TOTAL_SIZE (sizeof(struct xlat_cache_block)+MIN_BLOCK_SIZE)
|
nkeynes@359 | 46 |
|
nkeynes@359 | 47 | #define BLOCK_INACTIVE 0
|
nkeynes@359 | 48 | #define BLOCK_ACTIVE 1
|
nkeynes@359 | 49 | #define BLOCK_USED 2
|
nkeynes@359 | 50 |
|
nkeynes@359 | 51 | xlat_cache_block_t xlat_new_cache;
|
nkeynes@359 | 52 | xlat_cache_block_t xlat_new_cache_ptr;
|
nkeynes@359 | 53 | xlat_cache_block_t xlat_new_create_ptr;
|
nkeynes@922 | 54 |
|
nkeynes@922 | 55 | #ifdef XLAT_GENERATIONAL_CACHE
|
nkeynes@359 | 56 | xlat_cache_block_t xlat_temp_cache;
|
nkeynes@359 | 57 | xlat_cache_block_t xlat_temp_cache_ptr;
|
nkeynes@359 | 58 | xlat_cache_block_t xlat_old_cache;
|
nkeynes@359 | 59 | xlat_cache_block_t xlat_old_cache_ptr;
|
nkeynes@922 | 60 | #endif
|
nkeynes@922 | 61 |
|
nkeynes@953 | 62 | static void **xlat_lut[XLAT_LUT_PAGES];
|
nkeynes@376 | 63 | static gboolean xlat_initialized = FALSE;
|
nkeynes@359 | 64 |
|
nkeynes@422 | 65 | void xlat_cache_init(void)
|
nkeynes@359 | 66 | {
|
nkeynes@376 | 67 | if( !xlat_initialized ) {
|
nkeynes@736 | 68 | xlat_initialized = TRUE;
|
nkeynes@986 | 69 | xlat_new_cache = (xlat_cache_block_t)mmap( NULL, XLAT_NEW_CACHE_SIZE, PROT_EXEC|PROT_READ|PROT_WRITE,
|
nkeynes@736 | 70 | MAP_PRIVATE|MAP_ANON, -1, 0 );
|
nkeynes@922 | 71 | xlat_new_cache_ptr = xlat_new_cache;
|
nkeynes@922 | 72 | xlat_new_create_ptr = xlat_new_cache;
|
nkeynes@922 | 73 | #ifdef XLAT_GENERATIONAL_CACHE
|
nkeynes@736 | 74 | xlat_temp_cache = mmap( NULL, XLAT_TEMP_CACHE_SIZE, PROT_EXEC|PROT_READ|PROT_WRITE,
|
nkeynes@736 | 75 | MAP_PRIVATE|MAP_ANON, -1, 0 );
|
nkeynes@736 | 76 | xlat_old_cache = mmap( NULL, XLAT_OLD_CACHE_SIZE, PROT_EXEC|PROT_READ|PROT_WRITE,
|
nkeynes@736 | 77 | MAP_PRIVATE|MAP_ANON, -1, 0 );
|
nkeynes@736 | 78 | xlat_temp_cache_ptr = xlat_temp_cache;
|
nkeynes@736 | 79 | xlat_old_cache_ptr = xlat_old_cache;
|
nkeynes@922 | 80 | #endif
|
nkeynes@953 | 81 | // xlat_lut = mmap( NULL, XLAT_LUT_PAGES*sizeof(void *), PROT_READ|PROT_WRITE,
|
nkeynes@953 | 82 | // MAP_PRIVATE|MAP_ANON, -1, 0);
|
nkeynes@736 | 83 | memset( xlat_lut, 0, XLAT_LUT_PAGES*sizeof(void *) );
|
nkeynes@376 | 84 | }
|
nkeynes@359 | 85 | xlat_flush_cache();
|
nkeynes@359 | 86 | }
|
nkeynes@359 | 87 |
|
nkeynes@359 | 88 | /**
|
nkeynes@359 | 89 | * Reset the cache structure to its default state
|
nkeynes@359 | 90 | */
|
nkeynes@359 | 91 | void xlat_flush_cache()
|
nkeynes@359 | 92 | {
|
nkeynes@359 | 93 | xlat_cache_block_t tmp;
|
nkeynes@359 | 94 | int i;
|
nkeynes@359 | 95 | xlat_new_cache_ptr = xlat_new_cache;
|
nkeynes@359 | 96 | xlat_new_cache_ptr->active = 0;
|
nkeynes@359 | 97 | xlat_new_cache_ptr->size = XLAT_NEW_CACHE_SIZE - 2*sizeof(struct xlat_cache_block);
|
nkeynes@359 | 98 | tmp = NEXT(xlat_new_cache_ptr);
|
nkeynes@359 | 99 | tmp->active = 1;
|
nkeynes@359 | 100 | tmp->size = 0;
|
nkeynes@922 | 101 | #ifdef XLAT_GENERATIONAL_CACHE
|
nkeynes@359 | 102 | xlat_temp_cache_ptr = xlat_temp_cache;
|
nkeynes@359 | 103 | xlat_temp_cache_ptr->active = 0;
|
nkeynes@359 | 104 | xlat_temp_cache_ptr->size = XLAT_TEMP_CACHE_SIZE - 2*sizeof(struct xlat_cache_block);
|
nkeynes@359 | 105 | tmp = NEXT(xlat_temp_cache_ptr);
|
nkeynes@359 | 106 | tmp->active = 1;
|
nkeynes@359 | 107 | tmp->size = 0;
|
nkeynes@359 | 108 | xlat_old_cache_ptr = xlat_old_cache;
|
nkeynes@359 | 109 | xlat_old_cache_ptr->active = 0;
|
nkeynes@359 | 110 | xlat_old_cache_ptr->size = XLAT_OLD_CACHE_SIZE - 2*sizeof(struct xlat_cache_block);
|
nkeynes@359 | 111 | tmp = NEXT(xlat_old_cache_ptr);
|
nkeynes@359 | 112 | tmp->active = 1;
|
nkeynes@359 | 113 | tmp->size = 0;
|
nkeynes@922 | 114 | #endif
|
nkeynes@359 | 115 | for( i=0; i<XLAT_LUT_PAGES; i++ ) {
|
nkeynes@736 | 116 | if( xlat_lut[i] != NULL ) {
|
nkeynes@736 | 117 | memset( xlat_lut[i], 0, XLAT_LUT_PAGE_SIZE );
|
nkeynes@736 | 118 | }
|
nkeynes@359 | 119 | }
|
nkeynes@359 | 120 | }
|
nkeynes@359 | 121 |
|
nkeynes@400 | 122 | static void xlat_flush_page_by_lut( void **page )
|
nkeynes@359 | 123 | {
|
nkeynes@359 | 124 | int i;
|
nkeynes@359 | 125 | for( i=0; i<XLAT_LUT_PAGE_ENTRIES; i++ ) {
|
nkeynes@736 | 126 | if( IS_ENTRY_POINT(page[i]) ) {
|
nkeynes@901 | 127 | XLAT_BLOCK_FOR_CODE(page[i])->active = 0;
|
nkeynes@736 | 128 | }
|
nkeynes@736 | 129 | page[i] = NULL;
|
nkeynes@359 | 130 | }
|
nkeynes@359 | 131 | }
|
nkeynes@359 | 132 |
|
nkeynes@905 | 133 | void FASTCALL xlat_invalidate_word( sh4addr_t addr )
|
nkeynes@400 | 134 | {
|
nkeynes@953 | 135 | void **page = xlat_lut[XLAT_LUT_PAGE(addr)];
|
nkeynes@953 | 136 | if( page != NULL ) {
|
nkeynes@953 | 137 | int entry = XLAT_LUT_ENTRY(addr);
|
nkeynes@953 | 138 | if( page[entry] != NULL ) {
|
nkeynes@953 | 139 | xlat_flush_page_by_lut(page);
|
nkeynes@736 | 140 | }
|
nkeynes@400 | 141 | }
|
nkeynes@400 | 142 | }
|
nkeynes@400 | 143 |
|
nkeynes@905 | 144 | void FASTCALL xlat_invalidate_long( sh4addr_t addr )
|
nkeynes@400 | 145 | {
|
nkeynes@953 | 146 | void **page = xlat_lut[XLAT_LUT_PAGE(addr)];
|
nkeynes@953 | 147 | if( page != NULL ) {
|
nkeynes@953 | 148 | int entry = XLAT_LUT_ENTRY(addr);
|
nkeynes@953 | 149 | if( *(uint64_t *)&page[entry] != 0 ) {
|
nkeynes@953 | 150 | xlat_flush_page_by_lut(page);
|
nkeynes@736 | 151 | }
|
nkeynes@400 | 152 | }
|
nkeynes@400 | 153 | }
|
nkeynes@400 | 154 |
|
nkeynes@905 | 155 | void FASTCALL xlat_invalidate_block( sh4addr_t address, size_t size )
|
nkeynes@400 | 156 | {
|
nkeynes@400 | 157 | int i;
|
nkeynes@400 | 158 | int entry_count = size >> 1; // words;
|
nkeynes@400 | 159 | uint32_t page_no = XLAT_LUT_PAGE(address);
|
nkeynes@400 | 160 | int entry = XLAT_LUT_ENTRY(address);
|
nkeynes@953 | 161 | do {
|
nkeynes@953 | 162 | void **page = xlat_lut[page_no];
|
nkeynes@953 | 163 | int page_entries = XLAT_LUT_PAGE_ENTRIES - entry;
|
nkeynes@953 | 164 | if( entry_count < page_entries ) {
|
nkeynes@953 | 165 | page_entries = entry_count;
|
nkeynes@953 | 166 | }
|
nkeynes@953 | 167 | if( page != NULL ) {
|
nkeynes@953 | 168 | if( page_entries == XLAT_LUT_PAGE_ENTRIES ) {
|
nkeynes@953 | 169 | /* Overwriting the entire page anyway */
|
nkeynes@953 | 170 | xlat_flush_page_by_lut(page);
|
nkeynes@953 | 171 | } else {
|
nkeynes@953 | 172 | for( i=entry; i<entry+page_entries; i++ ) {
|
nkeynes@953 | 173 | if( page[i] != NULL ) {
|
nkeynes@953 | 174 | xlat_flush_page_by_lut(page);
|
nkeynes@953 | 175 | break;
|
nkeynes@736 | 176 | }
|
nkeynes@736 | 177 | }
|
nkeynes@736 | 178 | }
|
nkeynes@736 | 179 | entry_count -= page_entries;
|
nkeynes@953 | 180 | }
|
nkeynes@953 | 181 | page_no ++;
|
nkeynes@953 | 182 | entry_count -= page_entries;
|
nkeynes@953 | 183 | entry = 0;
|
nkeynes@953 | 184 | } while( entry_count > 0 );
|
nkeynes@400 | 185 | }
|
nkeynes@400 | 186 |
|
nkeynes@905 | 187 | void FASTCALL xlat_flush_page( sh4addr_t address )
|
nkeynes@400 | 188 | {
|
nkeynes@400 | 189 | void **page = xlat_lut[XLAT_LUT_PAGE(address)];
|
nkeynes@400 | 190 | if( page != NULL ) {
|
nkeynes@736 | 191 | xlat_flush_page_by_lut(page);
|
nkeynes@400 | 192 | }
|
nkeynes@400 | 193 | }
|
nkeynes@400 | 194 |
|
nkeynes@905 | 195 | void * FASTCALL xlat_get_code( sh4addr_t address )
|
nkeynes@359 | 196 | {
|
nkeynes@410 | 197 | void *result = NULL;
|
nkeynes@359 | 198 | void **page = xlat_lut[XLAT_LUT_PAGE(address)];
|
nkeynes@407 | 199 | if( page != NULL ) {
|
nkeynes@736 | 200 | result = (void *)(((uintptr_t)(page[XLAT_LUT_ENTRY(address)])) & (~((uintptr_t)0x03)));
|
nkeynes@407 | 201 | }
|
nkeynes@407 | 202 | return result;
|
nkeynes@407 | 203 | }
|
nkeynes@407 | 204 |
|
nkeynes@809 | 205 | xlat_recovery_record_t xlat_get_pre_recovery( void *code, void *native_pc )
|
nkeynes@809 | 206 | {
|
nkeynes@809 | 207 | if( code != NULL ) {
|
nkeynes@809 | 208 | uintptr_t pc_offset = ((uint8_t *)native_pc) - ((uint8_t *)code);
|
nkeynes@901 | 209 | xlat_cache_block_t block = XLAT_BLOCK_FOR_CODE(code);
|
nkeynes@809 | 210 | uint32_t count = block->recover_table_size;
|
nkeynes@809 | 211 | xlat_recovery_record_t records = (xlat_recovery_record_t)(&block->code[block->recover_table_offset]);
|
nkeynes@809 | 212 | uint32_t posn;
|
nkeynes@809 | 213 | for( posn = 1; posn < count; posn++ ) {
|
nkeynes@809 | 214 | if( records[posn].xlat_offset >= pc_offset ) {
|
nkeynes@809 | 215 | return &records[posn-1];
|
nkeynes@809 | 216 | }
|
nkeynes@809 | 217 | }
|
nkeynes@809 | 218 | return &records[count-1];
|
nkeynes@809 | 219 | }
|
nkeynes@809 | 220 | return NULL;
|
nkeynes@809 | 221 | }
|
nkeynes@809 | 222 |
|
nkeynes@905 | 223 | void ** FASTCALL xlat_get_lut_entry( sh4addr_t address )
|
nkeynes@407 | 224 | {
|
nkeynes@407 | 225 | void **page = xlat_lut[XLAT_LUT_PAGE(address)];
|
nkeynes@407 | 226 |
|
nkeynes@407 | 227 | /* Add the LUT entry for the block */
|
nkeynes@359 | 228 | if( page == NULL ) {
|
nkeynes@736 | 229 | xlat_lut[XLAT_LUT_PAGE(address)] = page =
|
nkeynes@986 | 230 | (void **)mmap( NULL, XLAT_LUT_PAGE_SIZE, PROT_READ|PROT_WRITE,
|
nkeynes@736 | 231 | MAP_PRIVATE|MAP_ANON, -1, 0 );
|
nkeynes@736 | 232 | memset( page, 0, XLAT_LUT_PAGE_SIZE );
|
nkeynes@359 | 233 | }
|
nkeynes@736 | 234 |
|
nkeynes@407 | 235 | return &page[XLAT_LUT_ENTRY(address)];
|
nkeynes@359 | 236 | }
|
nkeynes@359 | 237 |
|
nkeynes@407 | 238 |
|
nkeynes@407 | 239 |
|
nkeynes@905 | 240 | uint32_t FASTCALL xlat_get_block_size( void *block )
|
nkeynes@366 | 241 | {
|
nkeynes@366 | 242 | xlat_cache_block_t xlt = (xlat_cache_block_t)(((char *)block)-sizeof(struct xlat_cache_block));
|
nkeynes@366 | 243 | return xlt->size;
|
nkeynes@366 | 244 | }
|
nkeynes@366 | 245 |
|
nkeynes@905 | 246 | uint32_t FASTCALL xlat_get_code_size( void *block )
|
nkeynes@586 | 247 | {
|
nkeynes@586 | 248 | xlat_cache_block_t xlt = (xlat_cache_block_t)(((char *)block)-sizeof(struct xlat_cache_block));
|
nkeynes@592 | 249 | if( xlt->recover_table_offset == 0 ) {
|
nkeynes@736 | 250 | return xlt->size;
|
nkeynes@586 | 251 | } else {
|
nkeynes@736 | 252 | return xlt->recover_table_offset;
|
nkeynes@586 | 253 | }
|
nkeynes@586 | 254 | }
|
nkeynes@586 | 255 |
|
nkeynes@359 | 256 | /**
|
nkeynes@359 | 257 | * Cut the specified block so that it has the given size, with the remaining data
|
nkeynes@359 | 258 | * forming a new free block. If the free block would be less than the minimum size,
|
nkeynes@359 | 259 | * the cut is not performed.
|
nkeynes@359 | 260 | * @return the next block after the (possibly cut) block.
|
nkeynes@359 | 261 | */
|
nkeynes@359 | 262 | static inline xlat_cache_block_t xlat_cut_block( xlat_cache_block_t block, int cutsize )
|
nkeynes@359 | 263 | {
|
nkeynes@407 | 264 | cutsize = (cutsize + 3) & 0xFFFFFFFC; // force word alignment
|
nkeynes@410 | 265 | assert( cutsize <= block->size );
|
nkeynes@359 | 266 | if( block->size > cutsize + MIN_TOTAL_SIZE ) {
|
nkeynes@736 | 267 | int oldsize = block->size;
|
nkeynes@736 | 268 | block->size = cutsize;
|
nkeynes@736 | 269 | xlat_cache_block_t next = NEXT(block);
|
nkeynes@736 | 270 | next->active = 0;
|
nkeynes@736 | 271 | next->size = oldsize - cutsize - sizeof(struct xlat_cache_block);
|
nkeynes@736 | 272 | return next;
|
nkeynes@359 | 273 | } else {
|
nkeynes@736 | 274 | return NEXT(block);
|
nkeynes@359 | 275 | }
|
nkeynes@359 | 276 | }
|
nkeynes@359 | 277 |
|
nkeynes@922 | 278 | #ifdef XLAT_GENERATIONAL_CACHE
|
nkeynes@359 | 279 | /**
|
nkeynes@359 | 280 | * Promote a block in temp space (or elsewhere for that matter) to old space.
|
nkeynes@359 | 281 | *
|
nkeynes@359 | 282 | * @param block to promote.
|
nkeynes@359 | 283 | */
|
nkeynes@359 | 284 | static void xlat_promote_to_old_space( xlat_cache_block_t block )
|
nkeynes@359 | 285 | {
|
nkeynes@788 | 286 | int allocation = (int)-sizeof(struct xlat_cache_block);
|
nkeynes@359 | 287 | int size = block->size;
|
nkeynes@359 | 288 | xlat_cache_block_t curr = xlat_old_cache_ptr;
|
nkeynes@359 | 289 | xlat_cache_block_t start_block = curr;
|
nkeynes@359 | 290 | do {
|
nkeynes@736 | 291 | allocation += curr->size + sizeof(struct xlat_cache_block);
|
nkeynes@736 | 292 | curr = NEXT(curr);
|
nkeynes@736 | 293 | if( allocation > size ) {
|
nkeynes@736 | 294 | break; /* done */
|
nkeynes@736 | 295 | }
|
nkeynes@736 | 296 | if( curr->size == 0 ) { /* End-of-cache Sentinel */
|
nkeynes@736 | 297 | /* Leave what we just released as free space and start again from the
|
nkeynes@736 | 298 | * top of the cache
|
nkeynes@736 | 299 | */
|
nkeynes@736 | 300 | start_block->active = 0;
|
nkeynes@736 | 301 | start_block->size = allocation;
|
nkeynes@788 | 302 | allocation = (int)-sizeof(struct xlat_cache_block);
|
nkeynes@736 | 303 | start_block = curr = xlat_old_cache;
|
nkeynes@736 | 304 | }
|
nkeynes@359 | 305 | } while(1);
|
nkeynes@359 | 306 | start_block->active = 1;
|
nkeynes@359 | 307 | start_block->size = allocation;
|
nkeynes@359 | 308 | start_block->lut_entry = block->lut_entry;
|
nkeynes@901 | 309 | start_block->fpscr_mask = block->fpscr_mask;
|
nkeynes@901 | 310 | start_block->fpscr = block->fpscr;
|
nkeynes@596 | 311 | start_block->recover_table_offset = block->recover_table_offset;
|
nkeynes@596 | 312 | start_block->recover_table_size = block->recover_table_size;
|
nkeynes@359 | 313 | *block->lut_entry = &start_block->code;
|
nkeynes@359 | 314 | memcpy( start_block->code, block->code, block->size );
|
nkeynes@359 | 315 | xlat_old_cache_ptr = xlat_cut_block(start_block, size );
|
nkeynes@359 | 316 | if( xlat_old_cache_ptr->size == 0 ) {
|
nkeynes@736 | 317 | xlat_old_cache_ptr = xlat_old_cache;
|
nkeynes@359 | 318 | }
|
nkeynes@359 | 319 | }
|
nkeynes@359 | 320 |
|
nkeynes@359 | 321 | /**
|
nkeynes@359 | 322 | * Similarly to the above method, promotes a block to temp space.
|
nkeynes@359 | 323 | * TODO: Try to combine these - they're nearly identical
|
nkeynes@359 | 324 | */
|
nkeynes@359 | 325 | void xlat_promote_to_temp_space( xlat_cache_block_t block )
|
nkeynes@359 | 326 | {
|
nkeynes@359 | 327 | int size = block->size;
|
nkeynes@788 | 328 | int allocation = (int)-sizeof(struct xlat_cache_block);
|
nkeynes@359 | 329 | xlat_cache_block_t curr = xlat_temp_cache_ptr;
|
nkeynes@359 | 330 | xlat_cache_block_t start_block = curr;
|
nkeynes@359 | 331 | do {
|
nkeynes@736 | 332 | if( curr->active == BLOCK_USED ) {
|
nkeynes@736 | 333 | xlat_promote_to_old_space( curr );
|
nkeynes@736 | 334 | } else if( curr->active == BLOCK_ACTIVE ) {
|
nkeynes@736 | 335 | // Active but not used, release block
|
nkeynes@736 | 336 | *((uintptr_t *)curr->lut_entry) &= ((uintptr_t)0x03);
|
nkeynes@736 | 337 | }
|
nkeynes@736 | 338 | allocation += curr->size + sizeof(struct xlat_cache_block);
|
nkeynes@736 | 339 | curr = NEXT(curr);
|
nkeynes@736 | 340 | if( allocation > size ) {
|
nkeynes@736 | 341 | break; /* done */
|
nkeynes@736 | 342 | }
|
nkeynes@736 | 343 | if( curr->size == 0 ) { /* End-of-cache Sentinel */
|
nkeynes@736 | 344 | /* Leave what we just released as free space and start again from the
|
nkeynes@736 | 345 | * top of the cache
|
nkeynes@736 | 346 | */
|
nkeynes@736 | 347 | start_block->active = 0;
|
nkeynes@736 | 348 | start_block->size = allocation;
|
nkeynes@788 | 349 | allocation = (int)-sizeof(struct xlat_cache_block);
|
nkeynes@736 | 350 | start_block = curr = xlat_temp_cache;
|
nkeynes@736 | 351 | }
|
nkeynes@359 | 352 | } while(1);
|
nkeynes@359 | 353 | start_block->active = 1;
|
nkeynes@359 | 354 | start_block->size = allocation;
|
nkeynes@359 | 355 | start_block->lut_entry = block->lut_entry;
|
nkeynes@901 | 356 | start_block->fpscr_mask = block->fpscr_mask;
|
nkeynes@901 | 357 | start_block->fpscr = block->fpscr;
|
nkeynes@596 | 358 | start_block->recover_table_offset = block->recover_table_offset;
|
nkeynes@596 | 359 | start_block->recover_table_size = block->recover_table_size;
|
nkeynes@359 | 360 | *block->lut_entry = &start_block->code;
|
nkeynes@359 | 361 | memcpy( start_block->code, block->code, block->size );
|
nkeynes@359 | 362 | xlat_temp_cache_ptr = xlat_cut_block(start_block, size );
|
nkeynes@359 | 363 | if( xlat_temp_cache_ptr->size == 0 ) {
|
nkeynes@736 | 364 | xlat_temp_cache_ptr = xlat_temp_cache;
|
nkeynes@359 | 365 | }
|
nkeynes@736 | 366 |
|
nkeynes@359 | 367 | }
|
nkeynes@922 | 368 | #else
|
nkeynes@922 | 369 | void xlat_promote_to_temp_space( xlat_cache_block_t block )
|
nkeynes@922 | 370 | {
|
nkeynes@922 | 371 | *block->lut_entry = 0;
|
nkeynes@922 | 372 | }
|
nkeynes@922 | 373 | #endif
|
nkeynes@359 | 374 |
|
nkeynes@359 | 375 | /**
|
nkeynes@359 | 376 | * Returns the next block in the new cache list that can be written to by the
|
nkeynes@359 | 377 | * translator. If the next block is active, it is evicted first.
|
nkeynes@359 | 378 | */
|
nkeynes@359 | 379 | xlat_cache_block_t xlat_start_block( sh4addr_t address )
|
nkeynes@359 | 380 | {
|
nkeynes@359 | 381 | if( xlat_new_cache_ptr->size == 0 ) {
|
nkeynes@736 | 382 | xlat_new_cache_ptr = xlat_new_cache;
|
nkeynes@359 | 383 | }
|
nkeynes@359 | 384 |
|
nkeynes@359 | 385 | if( xlat_new_cache_ptr->active ) {
|
nkeynes@736 | 386 | xlat_promote_to_temp_space( xlat_new_cache_ptr );
|
nkeynes@359 | 387 | }
|
nkeynes@359 | 388 | xlat_new_create_ptr = xlat_new_cache_ptr;
|
nkeynes@359 | 389 | xlat_new_create_ptr->active = 1;
|
nkeynes@359 | 390 | xlat_new_cache_ptr = NEXT(xlat_new_cache_ptr);
|
nkeynes@359 | 391 |
|
nkeynes@359 | 392 | /* Add the LUT entry for the block */
|
nkeynes@359 | 393 | if( xlat_lut[XLAT_LUT_PAGE(address)] == NULL ) {
|
nkeynes@736 | 394 | xlat_lut[XLAT_LUT_PAGE(address)] =
|
nkeynes@986 | 395 | (void **)mmap( NULL, XLAT_LUT_PAGE_SIZE, PROT_READ|PROT_WRITE,
|
nkeynes@736 | 396 | MAP_PRIVATE|MAP_ANON, -1, 0 );
|
nkeynes@736 | 397 | memset( xlat_lut[XLAT_LUT_PAGE(address)], 0, XLAT_LUT_PAGE_SIZE );
|
nkeynes@359 | 398 | }
|
nkeynes@359 | 399 |
|
nkeynes@359 | 400 | if( IS_ENTRY_POINT(xlat_lut[XLAT_LUT_PAGE(address)][XLAT_LUT_ENTRY(address)]) ) {
|
nkeynes@901 | 401 | xlat_cache_block_t oldblock = XLAT_BLOCK_FOR_CODE(xlat_lut[XLAT_LUT_PAGE(address)][XLAT_LUT_ENTRY(address)]);
|
nkeynes@736 | 402 | oldblock->active = 0;
|
nkeynes@359 | 403 | }
|
nkeynes@359 | 404 |
|
nkeynes@359 | 405 | xlat_lut[XLAT_LUT_PAGE(address)][XLAT_LUT_ENTRY(address)] =
|
nkeynes@736 | 406 | &xlat_new_create_ptr->code;
|
nkeynes@359 | 407 | xlat_new_create_ptr->lut_entry = xlat_lut[XLAT_LUT_PAGE(address)] + XLAT_LUT_ENTRY(address);
|
nkeynes@736 | 408 |
|
nkeynes@359 | 409 | return xlat_new_create_ptr;
|
nkeynes@359 | 410 | }
|
nkeynes@359 | 411 |
|
nkeynes@410 | 412 | xlat_cache_block_t xlat_extend_block( uint32_t newSize )
|
nkeynes@359 | 413 | {
|
nkeynes@410 | 414 | while( xlat_new_create_ptr->size < newSize ) {
|
nkeynes@736 | 415 | if( xlat_new_cache_ptr->size == 0 ) {
|
nkeynes@736 | 416 | /* Migrate to the front of the cache to keep it contiguous */
|
nkeynes@736 | 417 | xlat_new_create_ptr->active = 0;
|
nkeynes@736 | 418 | sh4ptr_t olddata = xlat_new_create_ptr->code;
|
nkeynes@736 | 419 | int oldsize = xlat_new_create_ptr->size;
|
nkeynes@736 | 420 | int size = oldsize + MIN_BLOCK_SIZE; /* minimum expansion */
|
nkeynes@736 | 421 | void **lut_entry = xlat_new_create_ptr->lut_entry;
|
nkeynes@788 | 422 | int allocation = (int)-sizeof(struct xlat_cache_block);
|
nkeynes@736 | 423 | xlat_new_cache_ptr = xlat_new_cache;
|
nkeynes@736 | 424 | do {
|
nkeynes@736 | 425 | if( xlat_new_cache_ptr->active ) {
|
nkeynes@736 | 426 | xlat_promote_to_temp_space( xlat_new_cache_ptr );
|
nkeynes@736 | 427 | }
|
nkeynes@736 | 428 | allocation += xlat_new_cache_ptr->size + sizeof(struct xlat_cache_block);
|
nkeynes@736 | 429 | xlat_new_cache_ptr = NEXT(xlat_new_cache_ptr);
|
nkeynes@736 | 430 | } while( allocation < size );
|
nkeynes@736 | 431 | xlat_new_create_ptr = xlat_new_cache;
|
nkeynes@736 | 432 | xlat_new_create_ptr->active = 1;
|
nkeynes@736 | 433 | xlat_new_create_ptr->size = allocation;
|
nkeynes@736 | 434 | xlat_new_create_ptr->lut_entry = lut_entry;
|
nkeynes@736 | 435 | *lut_entry = &xlat_new_create_ptr->code;
|
nkeynes@736 | 436 | memmove( xlat_new_create_ptr->code, olddata, oldsize );
|
nkeynes@736 | 437 | } else {
|
nkeynes@736 | 438 | if( xlat_new_cache_ptr->active ) {
|
nkeynes@736 | 439 | xlat_promote_to_temp_space( xlat_new_cache_ptr );
|
nkeynes@736 | 440 | }
|
nkeynes@736 | 441 | xlat_new_create_ptr->size += xlat_new_cache_ptr->size + sizeof(struct xlat_cache_block);
|
nkeynes@736 | 442 | xlat_new_cache_ptr = NEXT(xlat_new_cache_ptr);
|
nkeynes@736 | 443 | }
|
nkeynes@359 | 444 | }
|
nkeynes@359 | 445 | return xlat_new_create_ptr;
|
nkeynes@359 | 446 |
|
nkeynes@359 | 447 | }
|
nkeynes@359 | 448 |
|
nkeynes@359 | 449 | void xlat_commit_block( uint32_t destsize, uint32_t srcsize )
|
nkeynes@359 | 450 | {
|
nkeynes@359 | 451 | void **ptr = xlat_new_create_ptr->lut_entry;
|
nkeynes@359 | 452 | void **endptr = ptr + (srcsize>>2);
|
nkeynes@359 | 453 | while( ptr < endptr ) {
|
nkeynes@736 | 454 | if( *ptr == NULL ) {
|
nkeynes@736 | 455 | *ptr = XLAT_LUT_ENTRY_USED;
|
nkeynes@736 | 456 | }
|
nkeynes@736 | 457 | ptr++;
|
nkeynes@359 | 458 | }
|
nkeynes@359 | 459 |
|
nkeynes@359 | 460 | xlat_new_cache_ptr = xlat_cut_block( xlat_new_create_ptr, destsize );
|
nkeynes@359 | 461 | }
|
nkeynes@359 | 462 |
|
nkeynes@359 | 463 | void xlat_delete_block( xlat_cache_block_t block )
|
nkeynes@359 | 464 | {
|
nkeynes@359 | 465 | block->active = 0;
|
nkeynes@359 | 466 | *block->lut_entry = NULL;
|
nkeynes@359 | 467 | }
|
nkeynes@359 | 468 |
|
nkeynes@359 | 469 | void xlat_check_cache_integrity( xlat_cache_block_t cache, xlat_cache_block_t ptr, int size )
|
nkeynes@359 | 470 | {
|
nkeynes@359 | 471 | int foundptr = 0;
|
nkeynes@359 | 472 | xlat_cache_block_t tail =
|
nkeynes@736 | 473 | (xlat_cache_block_t)(((char *)cache) + size - sizeof(struct xlat_cache_block));
|
nkeynes@359 | 474 |
|
nkeynes@359 | 475 | assert( tail->active == 1 );
|
nkeynes@359 | 476 | assert( tail->size == 0 );
|
nkeynes@359 | 477 | while( cache < tail ) {
|
nkeynes@736 | 478 | assert( cache->active >= 0 && cache->active <= 2 );
|
nkeynes@736 | 479 | assert( cache->size >= 0 && cache->size < size );
|
nkeynes@736 | 480 | if( cache == ptr ) {
|
nkeynes@736 | 481 | foundptr = 1;
|
nkeynes@736 | 482 | }
|
nkeynes@736 | 483 | cache = NEXT(cache);
|
nkeynes@359 | 484 | }
|
nkeynes@359 | 485 | assert( cache == tail );
|
nkeynes@596 | 486 | assert( foundptr == 1 || tail == ptr );
|
nkeynes@359 | 487 | }
|
nkeynes@359 | 488 |
|
nkeynes@359 | 489 | void xlat_check_integrity( )
|
nkeynes@359 | 490 | {
|
nkeynes@359 | 491 | xlat_check_cache_integrity( xlat_new_cache, xlat_new_cache_ptr, XLAT_NEW_CACHE_SIZE );
|
nkeynes@922 | 492 | #ifdef XLAT_GENERATIONAL_CACHE
|
nkeynes@359 | 493 | xlat_check_cache_integrity( xlat_temp_cache, xlat_temp_cache_ptr, XLAT_TEMP_CACHE_SIZE );
|
nkeynes@359 | 494 | xlat_check_cache_integrity( xlat_old_cache, xlat_old_cache_ptr, XLAT_OLD_CACHE_SIZE );
|
nkeynes@922 | 495 | #endif
|
nkeynes@359 | 496 | }
|
nkeynes@376 | 497 |
|