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Annotation of previous/src/cpu/memory.h, revision 1.1

1.1     ! root        1:  /*
        !             2:   * UAE - The Un*x Amiga Emulator
        !             3:   *
        !             4:   * memory management
        !             5:   *
        !             6:   * Copyright 1995 Bernd Schmidt
        !             7:   *
        !             8:   * Adaptation to Hatari by Thomas Huth
        !             9:   *
        !            10:   * This file is distributed under the GNU Public License, version 2 or at
        !            11:   * your option any later version. Read the file gpl.txt for details.
        !            12:   */
        !            13: 
        !            14: #ifndef UAE_MEMORY_H
        !            15: #define UAE_MEMORY_H
        !            16: 
        !            17: #include "maccess.h"
        !            18: 
        !            19: #ifdef JIT
        !            20: extern int special_mem;
        !            21: #define S_READ 1
        !            22: #define S_WRITE 2
        !            23: 
        !            24: extern uae_u8 *cache_alloc (int);
        !            25: extern void cache_free (uae_u8*);
        !            26: #endif
        !            27: 
        !            28: #define call_mem_get_func(func, addr) ((*func)(addr))
        !            29: #define call_mem_put_func(func, addr, v) ((*func)(addr, v))
        !            30: 
        !            31: #define NEXT_SCREEN_SIZE       0x00040000
        !            32: extern uae_u8 NEXTVideo[256*1024];
        !            33: 
        !            34: 
        !            35: /* Enabling this adds one additional native memory reference per 68k memory
        !            36:  * access, but saves one shift (on the x86). Enabling this is probably
        !            37:  * better for the cache. My favourite benchmark (PP2) doesn't show a
        !            38:  * difference, so I leave this enabled. */
        !            39: #if 1 || defined SAVE_MEMORY
        !            40: #define SAVE_MEMORY_BANKS
        !            41: #endif
        !            42: 
        !            43: extern void memory_hardreset (void);
        !            44: 
        !            45: typedef uae_u32 (*mem_get_func)(uaecptr) REGPARAM;
        !            46: typedef void (*mem_put_func)(uaecptr, uae_u32) REGPARAM;
        !            47: typedef uae_u8 *(*xlate_func)(uaecptr) REGPARAM;
        !            48: typedef int (*check_func)(uaecptr, uae_u32) REGPARAM;
        !            49: 
        !            50: extern char *address_space, *good_address_map;
        !            51: 
        !            52: extern uae_u32 wait_cpu_cycle_read (uaecptr addr, int mode);
        !            53: extern void wait_cpu_cycle_write (uaecptr addr, int mode, uae_u32 v);
        !            54: extern uae_u32 wait_cpu_cycle_read_ce020 (uaecptr addr, int mode);
        !            55: extern void wait_cpu_cycle_write_ce020 (uaecptr addr, int mode, uae_u32 v);
        !            56: 
        !            57: enum { ABFLAG_UNK = 0, ABFLAG_RAM = 1, ABFLAG_ROM = 2, ABFLAG_ROMIN = 4, ABFLAG_IO = 8, ABFLAG_NONE = 16, ABFLAG_SAFE = 32 };
        !            58: typedef struct {
        !            59:        /* These ones should be self-explanatory... */
        !            60:        mem_get_func lget, wget, bget;
        !            61:        mem_put_func lput, wput, bput;
        !            62:        /* Use xlateaddr to translate an Amiga address to a uae_u8 * that can
        !            63:        * be used to address memory without calling the wget/wput functions.
        !            64:        * This doesn't work for all memory banks, so this function may call
        !            65:        * abort(). */
        !            66:        xlate_func xlateaddr;
        !            67:        /* To prevent calls to abort(), use check before calling xlateaddr.
        !            68:        * It checks not only that the memory bank can do xlateaddr, but also
        !            69:        * that the pointer points to an area of at least the specified size.
        !            70:        * This is used for example to translate bitplane pointers in custom.c */
        !            71:        check_func check;
        !            72:        /* For those banks that refer to real memory, we can save the whole trouble
        !            73:        of going through function calls, and instead simply grab the memory
        !            74:        ourselves. This holds the memory address where the start of memory is
        !            75:        for this particular bank. */
        !            76:        uae_u8 *baseaddr;
        !            77:        TCHAR *name;
        !            78:        /* for instruction opcode/operand fetches */
        !            79:        mem_get_func lgeti, wgeti;
        !            80:        int flags;
        !            81: } addrbank;
        !            82: 
        !            83: #define CE_MEMBANK_FAST 0
        !            84: #define CE_MEMBANK_CHIP 1
        !            85: #define CE_MEMBANK_CIA 2
        !            86: #define CE_MEMBANK_FAST16BIT 3
        !            87: extern uae_u8 ce_banktype[65536], ce_cachable[65536];
        !            88: 
        !            89: 
        !            90: #define bankindex(addr) (((uaecptr)(addr)) >> 16)
        !            91: 
        !            92: #ifdef SAVE_MEMORY_BANKS
        !            93: extern addrbank *mem_banks[65536];
        !            94: #define get_mem_bank(addr) (*mem_banks[bankindex(addr)])
        !            95: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = (b))
        !            96: #else
        !            97: extern addrbank mem_banks[65536];
        !            98: #define get_mem_bank(addr) (mem_banks[bankindex(addr)])
        !            99: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = *(b))
        !           100: #endif
        !           101: 
        !           102: extern void memory_init(uae_u32 nNewNEXTMemSize);
        !           103: extern void memory_uninit (void);
        !           104: extern void map_banks(addrbank *bank, int first, int count);
        !           105: 
        !           106: #ifndef NO_INLINE_MEMORY_ACCESS
        !           107: 
        !           108: #define longget(addr) (call_mem_get_func(get_mem_bank(addr).lget, addr))
        !           109: #define wordget(addr) (call_mem_get_func(get_mem_bank(addr).wget, addr))
        !           110: #define byteget(addr) (call_mem_get_func(get_mem_bank(addr).bget, addr))
        !           111: #define longput(addr,l) (call_mem_put_func(get_mem_bank(addr).lput, addr, l))
        !           112: #define wordput(addr,w) (call_mem_put_func(get_mem_bank(addr).wput, addr, w))
        !           113: #define byteput(addr,b) (call_mem_put_func(get_mem_bank(addr).bput, addr, b))
        !           114: 
        !           115: #else
        !           116: 
        !           117: extern uae_u32 alongget(uaecptr addr);
        !           118: extern uae_u32 awordget(uaecptr addr);
        !           119: extern uae_u32 longget(uaecptr addr);
        !           120: extern uae_u32 wordget(uaecptr addr);
        !           121: extern uae_u32 byteget(uaecptr addr);
        !           122: extern void longput(uaecptr addr, uae_u32 l);
        !           123: extern void wordput(uaecptr addr, uae_u32 w);
        !           124: extern void byteput(uaecptr addr, uae_u32 b);
        !           125: 
        !           126: #endif
        !           127: 
        !           128: #define longget(addr) (call_mem_get_func(get_mem_bank(addr).lget, addr))
        !           129: #define wordget(addr) (call_mem_get_func(get_mem_bank(addr).wget, addr))
        !           130: #define byteget(addr) (call_mem_get_func(get_mem_bank(addr).bget, addr))
        !           131: #define longgeti(addr) (call_mem_get_func(get_mem_bank(addr).lgeti, addr))
        !           132: #define wordgeti(addr) (call_mem_get_func(get_mem_bank(addr).wgeti, addr))
        !           133: #define longput(addr,l) (call_mem_put_func(get_mem_bank(addr).lput, addr, l))
        !           134: #define wordput(addr,w) (call_mem_put_func(get_mem_bank(addr).wput, addr, w))
        !           135: #define byteput(addr,b) (call_mem_put_func(get_mem_bank(addr).bput, addr, b))
        !           136: 
        !           137: static inline uae_u32 get_long(uaecptr addr)
        !           138: {
        !           139:     return longget(addr);
        !           140: }
        !           141: 
        !           142: static inline uae_u32 get_word(uaecptr addr)
        !           143: {
        !           144:     return wordget(addr);
        !           145: }
        !           146: 
        !           147: static inline uae_u32 get_byte(uaecptr addr)
        !           148: {
        !           149:     return byteget(addr);
        !           150: }
        !           151: 
        !           152: static inline void put_long(uaecptr addr, uae_u32 l)
        !           153: {
        !           154:     longput(addr, l);
        !           155: }
        !           156: 
        !           157: static inline void put_word(uaecptr addr, uae_u32 w)
        !           158: {
        !           159:     wordput(addr, w);
        !           160: }
        !           161: 
        !           162: static inline void put_byte(uaecptr addr, uae_u32 b)
        !           163: {
        !           164:     byteput(addr, b);
        !           165: }
        !           166: 
        !           167: static inline uae_u8 *get_real_address(uaecptr addr)
        !           168: {
        !           169:     return get_mem_bank(addr).xlateaddr(addr);
        !           170: }
        !           171: 
        !           172: static inline int valid_address(uaecptr addr, uae_u32 size)
        !           173: {
        !           174:     return get_mem_bank(addr).check(addr, size);
        !           175: }
        !           176: 
        !           177: static inline uae_u32 get_longi(uaecptr addr)
        !           178: {
        !           179:        return longgeti (addr);
        !           180: }
        !           181: 
        !           182: static inline uae_u32 get_wordi(uaecptr addr)
        !           183: {
        !           184:        return wordgeti (addr);
        !           185: }
        !           186: 
        !           187: #endif /* UAE_MEMORY_H */

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