mirror of
https://github.com/holub/mame
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1daf41e218
The structures/names were getting too complex for my macros to handle. They would require hand editing and my computer is too slow to keep re-compiling. Passes a clean compile.
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/***************************************************************************
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drccache.h
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Universal dynamic recompiler cache management.
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Copyright Aaron Giles
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Released for general non-commercial use under the MAME license
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Visit http://mamedev.org for licensing and usage restrictions.
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***************************************************************************/
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#pragma once
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#ifndef __DRCCACHE_H__
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#define __DRCCACHE_H__
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/***************************************************************************
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MACROS
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***************************************************************************/
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/* ensure that a given pointer is within the cache boundaries */
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#define assert_in_cache(c,p) assert(drccache_contains_pointer(c, p))
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#define assert_in_near_cache(c,p) assert(drccache_contains_near_pointer(c, p))
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/***************************************************************************
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TYPE DEFINITIONS
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***************************************************************************/
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/* generic code pointer */
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typedef UINT8 *drccodeptr;
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/* opaque cache state */
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typedef struct _drccache drccache;
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/* out of band codegen callback */
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typedef void (*drccache_oob_func)(drccodeptr *codeptr, void *param1, void *param2, void *param3);
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/***************************************************************************
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FUNCTION PROTOTYPES
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***************************************************************************/
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/* ----- initialization/teardown ----- */
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/* allocate the cache itself */
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drccache *drccache_alloc(size_t bytes);
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/* free the cache */
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void drccache_free(drccache *cache);
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/* ----- cache information ----- */
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/* return true if a pointer is within the cache */
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int drccache_contains_pointer(drccache *cache, const void *ptr);
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/* return true if a pointer is within the near area of the cache */
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int drccache_contains_near_pointer(drccache *cache, const void *ptr);
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/* return a pointer to the near part of the cache */
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drccodeptr drccache_near(drccache *cache);
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/* return a pointer to the base of the cache, which is where code generation starts */
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drccodeptr drccache_base(drccache *cache);
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/* return the current top of the cache, which is where the next code will be generated */
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drccodeptr drccache_top(drccache *cache);
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/* ----- memory management ----- */
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/* flush the cache contents */
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void drccache_flush(drccache *cache);
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/* allocate permanent memory from the cache */
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void *drccache_memory_alloc(drccache *cache, size_t bytes);
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/* allocate permanent memory from the near portion of the cache */
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void *drccache_memory_alloc_near(drccache *cache, size_t bytes);
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/* release permanent memory allocated from the cache */
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void drccache_memory_free(drccache *cache, void *memory, size_t bytes);
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/* allocate temporary memory from the cache (released on a reset) */
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void *drccache_memory_alloc_temporary(drccache *cache, size_t bytes);
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/* ----- code generation ----- */
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/* begin code generation */
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drccodeptr *drccache_begin_codegen(drccache *cache, UINT32 reserve_bytes);
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/* complete code generation */
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drccodeptr drccache_end_codegen(drccache *cache);
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/* request callback for out-of-band codegen */
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void drccache_request_oob_codegen(drccache *cache, drccache_oob_func callback, void *param1, void *param2, void *param3);
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#endif /* __DRCCACHE_H__ */
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