filename | src/sh4/xltcache.h |
changeset | 359:c588dce7ebde |
next | 366:6fb0d05152d7 |
author | nkeynes |
date | Thu Aug 23 12:33:27 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Commit decoder generator Translator work in progress Fix mac.l, mac.w in emu core |
file | annotate | diff | log | raw |
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +00001.2 +++ b/src/sh4/xltcache.h Thu Aug 23 12:33:27 2007 +00001.3 @@ -0,0 +1,75 @@1.4 +/**1.5 + * $Id: xltcache.h,v 1.1 2007-08-23 12:33:27 nkeynes Exp $1.6 + *1.7 + * Translation cache support (architecture independent)1.8 + *1.9 + * Copyright (c) 2005 Nathan Keynes.1.10 + *1.11 + * This program is free software; you can redistribute it and/or modify1.12 + * it under the terms of the GNU General Public License as published by1.13 + * the Free Software Foundation; either version 2 of the License, or1.14 + * (at your option) any later version.1.15 + *1.16 + * This program is distributed in the hope that it will be useful,1.17 + * but WITHOUT ANY WARRANTY; without even the implied warranty of1.18 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1.19 + * GNU General Public License for more details.1.20 + */1.21 +1.22 +#include "dream.h"1.23 +#include "mem.h"1.24 +1.25 +typedef struct xlat_cache_block {1.26 + int active; /* 0 = deleted, 1 = normal. 2 = accessed (temp-space only) */1.27 + uint32_t size;1.28 + void **lut_entry; /* For deletion */1.29 + unsigned char code[0];1.30 +} *xlat_cache_block_t;1.31 +1.32 +/**1.33 + * Returns the next block in the new cache list that can be written to by the1.34 + * translator.1.35 + */1.36 +xlat_cache_block_t xlat_start_block(sh4addr_t address);1.37 +1.38 +/**1.39 + * Increases the current block size (only valid between calls to xlat_start_block()1.40 + * and xlat_commit_block()).1.41 + * @return the new block, which may be different from the old block.1.42 + */1.43 +xlat_cache_block_t xlat_extend_block();1.44 +1.45 +/**1.46 + * Commit the current translation block1.47 + * @param addr target address (for the lookup table)1.48 + * @param destsize final size of the translation in bytes.1.49 + * @param srcsize size of the original data that was translated in bytes1.50 + */1.51 +void xlat_commit_block( uint32_t destsize, uint32_t srcsize );1.52 +1.53 +/**1.54 + * Delete (deactivate) the specified block from the cache. Caller is responsible1.55 + * for ensuring that there really is a block there.1.56 + */1.57 +void xlat_delete_block( xlat_cache_block_t block );1.58 +1.59 +/**1.60 + * Retrieve the entry point for the translated code corresponding to the given1.61 + * SH4 address, or NULL if there is no code for that address.1.62 + */1.63 +void *xlat_get_code( sh4addr_t address );1.64 +1.65 +/**1.66 + * Flush the code cache for the page containing the given address1.67 + */1.68 +void xlat_flush_page( sh4addr_t address );1.69 +1.70 +/**1.71 + * Flush the entire code cache. This isn't as cheap as one might like1.72 + */1.73 +void xlat_flush_cache();1.74 +1.75 +/**1.76 + * Check the internal integrity of the cache1.77 + */1.78 +void xlat_check_integrity();
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