nkeynes@31 | 1 | /**
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nkeynes@586 | 2 | * $Id$
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nkeynes@31 | 3 | *
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nkeynes@31 | 4 | * mem is responsible for creating and maintaining the overall system memory
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nkeynes@31 | 5 | * map, as visible from the SH4 processor. (Note the ARM has a different map)
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nkeynes@31 | 6 | *
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nkeynes@31 | 7 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@31 | 8 | *
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nkeynes@31 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@31 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@31 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@31 | 12 | * (at your option) any later version.
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nkeynes@31 | 13 | *
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nkeynes@31 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@31 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@31 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@31 | 17 | * GNU General Public License for more details.
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nkeynes@31 | 18 | */
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nkeynes@31 | 19 |
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nkeynes@736 | 20 | #ifndef lxdream_mem_H
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nkeynes@736 | 21 | #define lxdream_mem_H 1
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nkeynes@10 | 22 |
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nkeynes@10 | 23 | #include <stdint.h>
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nkeynes@477 | 24 | #include "lxdream.h"
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nkeynes@953 | 25 | #include "hook.h"
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nkeynes@10 | 26 |
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nkeynes@10 | 27 | #ifdef __cplusplus
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nkeynes@10 | 28 | extern "C" {
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nkeynes@10 | 29 | #endif
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nkeynes@10 | 30 |
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nkeynes@953 | 31 |
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nkeynes@953 | 32 | typedef FASTCALL int32_t (*mem_read_fn_t)(sh4addr_t);
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nkeynes@953 | 33 | typedef FASTCALL void (*mem_write_fn_t)(sh4addr_t, uint32_t);
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nkeynes@953 | 34 | typedef FASTCALL void (*mem_read_burst_fn_t)(unsigned char *,sh4addr_t);
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nkeynes@953 | 35 | typedef FASTCALL void (*mem_write_burst_fn_t)(sh4addr_t,unsigned char *);
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nkeynes@953 | 36 | typedef FASTCALL void (*mem_prefetch_fn_t)(sh4addr_t);
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nkeynes@953 | 37 |
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nkeynes@953 | 38 | typedef FASTCALL int32_t (*mem_read_exc_fn_t)(sh4addr_t, void *);
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nkeynes@953 | 39 | typedef FASTCALL void (*mem_write_exc_fn_t)(sh4addr_t, uint32_t, void *);
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nkeynes@953 | 40 | typedef FASTCALL void (*mem_read_burst_exc_fn_t)(unsigned char *,sh4addr_t, void *);
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nkeynes@953 | 41 | typedef FASTCALL void (*mem_write_burst_exc_fn_t)(sh4addr_t,unsigned char *, void *);
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nkeynes@953 | 42 | typedef FASTCALL void (*mem_prefetch_exc_fn_t)(sh4addr_t, void *);
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nkeynes@953 | 43 |
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nkeynes@953 | 44 | /**
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nkeynes@953 | 45 | * Basic memory region vtable - read/write at byte, word, long, and burst
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nkeynes@953 | 46 | * (32-byte) sizes.
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nkeynes@953 | 47 | */
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nkeynes@953 | 48 | typedef struct mem_region_fn {
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nkeynes@953 | 49 | mem_read_fn_t read_long;
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nkeynes@953 | 50 | mem_write_fn_t write_long;
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nkeynes@953 | 51 | mem_read_fn_t read_word;
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nkeynes@953 | 52 | mem_write_fn_t write_word;
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nkeynes@953 | 53 | mem_read_fn_t read_byte;
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nkeynes@953 | 54 | mem_write_fn_t write_byte;
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nkeynes@953 | 55 | mem_read_burst_fn_t read_burst;
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nkeynes@953 | 56 | mem_write_burst_fn_t write_burst;
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nkeynes@953 | 57 | /* Prefetch is provided as a convenience for the SH4 - external memory
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nkeynes@953 | 58 | * spaces are automatically forced to unmapped_prefetch by mem.c
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nkeynes@953 | 59 | */
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nkeynes@953 | 60 | mem_prefetch_fn_t prefetch;
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nkeynes@953 | 61 | } *mem_region_fn_t;
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nkeynes@953 | 62 |
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nkeynes@953 | 63 | int32_t FASTCALL unmapped_read_long( sh4addr_t addr );
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nkeynes@953 | 64 | void FASTCALL unmapped_write_long( sh4addr_t addr, uint32_t val );
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nkeynes@953 | 65 | void FASTCALL unmapped_read_burst( unsigned char *dest, sh4addr_t addr );
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nkeynes@953 | 66 | void FASTCALL unmapped_write_burst( sh4addr_t addr, unsigned char *src );
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nkeynes@953 | 67 | void FASTCALL unmapped_prefetch( sh4addr_t addr );
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nkeynes@953 | 68 | extern struct mem_region_fn mem_region_unmapped;
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nkeynes@953 | 69 |
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nkeynes@10 | 70 | typedef struct mem_region {
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nkeynes@10 | 71 | uint32_t base;
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nkeynes@10 | 72 | uint32_t size;
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nkeynes@422 | 73 | const char *name;
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nkeynes@502 | 74 | sh4ptr_t mem;
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nkeynes@510 | 75 | uint32_t flags;
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nkeynes@953 | 76 | mem_region_fn_t fn;
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nkeynes@10 | 77 | } *mem_region_t;
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nkeynes@10 | 78 |
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nkeynes@10 | 79 | #define MAX_IO_REGIONS 24
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nkeynes@953 | 80 | #define MAX_MEM_REGIONS 16
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nkeynes@10 | 81 |
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nkeynes@180 | 82 | #define MEM_REGION_BIOS "Bios ROM"
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nkeynes@10 | 83 | #define MEM_REGION_MAIN "System RAM"
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nkeynes@10 | 84 | #define MEM_REGION_VIDEO "Video RAM"
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nkeynes@953 | 85 | #define MEM_REGION_VIDEO64 "Video RAM 64-bit"
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nkeynes@10 | 86 | #define MEM_REGION_AUDIO "Audio RAM"
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nkeynes@10 | 87 | #define MEM_REGION_AUDIO_SCRATCH "Audio Scratch RAM"
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nkeynes@146 | 88 | #define MEM_REGION_FLASH "System Flash"
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nkeynes@953 | 89 | #define MEM_REGION_PVR2TA "PVR2 TA Command"
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nkeynes@953 | 90 | #define MEM_REGION_PVR2YUV "PVR2 YUV Decode"
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nkeynes@953 | 91 | #define MEM_REGION_PVR2VDMA1 "PVR2 VRAM DMA 1"
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nkeynes@953 | 92 | #define MEM_REGION_PVR2VDMA2 "PVR2 VRAM DMA 2"
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nkeynes@10 | 93 |
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nkeynes@953 | 94 | typedef gboolean (*mem_page_remapped_hook_t)(sh4addr_t page, mem_region_fn_t newfn, void *user_data);
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nkeynes@953 | 95 | DECLARE_HOOK( mem_page_remapped_hook, mem_page_remapped_hook_t );
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nkeynes@953 | 96 |
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nkeynes@953 | 97 | struct mem_region *mem_map_region( void *mem, uint32_t base, uint32_t size,
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nkeynes@953 | 98 | const char *name, mem_region_fn_t fn, int flags, uint32_t repeat_offset,
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nkeynes@953 | 99 | uint32_t repeat_until );
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nkeynes@953 | 100 |
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nkeynes@543 | 101 | /**
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nkeynes@543 | 102 | * Load a ROM image from the specified filename. If the memory region has not
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nkeynes@543 | 103 | * been allocated, it is created now, otherwise the existing region is reused.
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nkeynes@543 | 104 | * If the CRC check fails, a warning will be printed.
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nkeynes@543 | 105 | * @return TRUE if the image was loaded successfully (irrespective of CRC failure).
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nkeynes@543 | 106 | */
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nkeynes@953 | 107 | gboolean mem_load_rom( void *output, const gchar *filename, uint32_t size, uint32_t crc );
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nkeynes@19 | 108 | void *mem_alloc_pages( int n );
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nkeynes@502 | 109 | sh4ptr_t mem_get_region( uint32_t addr );
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nkeynes@502 | 110 | sh4ptr_t mem_get_region_by_name( const char *name );
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nkeynes@953 | 111 | gboolean mem_has_page( uint32_t addr );
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nkeynes@146 | 112 | int mem_load_block( const gchar *filename, uint32_t base, uint32_t size );
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nkeynes@146 | 113 | int mem_save_block( const gchar *filename, uint32_t base, uint32_t size );
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nkeynes@586 | 114 | void mem_set_trace( const gchar *tracelist, int flag );
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nkeynes@10 | 115 | void mem_init( void );
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nkeynes@10 | 116 | void mem_reset( void );
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nkeynes@912 | 117 | void mem_copy_from_sh4( sh4ptr_t dest, sh4addr_t src, size_t count );
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nkeynes@912 | 118 | void mem_copy_to_sh4( sh4addr_t dest, sh4ptr_t src, size_t count );
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nkeynes@10 | 119 |
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nkeynes@669 | 120 | /**
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nkeynes@669 | 121 | * Write a long value directly to SH4-addressable memory.
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nkeynes@669 | 122 | * @param dest a valid, writable physical memory address, relative to the SH4
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nkeynes@669 | 123 | * @param value the value to write.
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nkeynes@669 | 124 | */
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nkeynes@669 | 125 | void mem_write_long( sh4addr_t dest, uint32_t value );
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nkeynes@669 | 126 |
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nkeynes@43 | 127 | #define ENABLE_DEBUG_MODE 1
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nkeynes@43 | 128 |
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nkeynes@586 | 129 | typedef enum { BREAK_NONE=0, BREAK_ONESHOT=1, BREAK_KEEP=2 } breakpoint_type_t;
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nkeynes@586 | 130 |
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nkeynes@43 | 131 | struct breakpoint_struct {
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nkeynes@43 | 132 | uint32_t address;
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nkeynes@586 | 133 | breakpoint_type_t type;
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nkeynes@43 | 134 | };
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nkeynes@43 | 135 |
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nkeynes@43 | 136 | #define MAX_BREAKPOINTS 32
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nkeynes@43 | 137 |
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nkeynes@586 | 138 |
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nkeynes@586 | 139 | #define MEM_FLAG_ROM 4 /* Mem region is ROM-based */
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nkeynes@586 | 140 | #define MEM_FLAG_RAM 6
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nkeynes@10 | 141 |
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nkeynes@10 | 142 | #define WATCH_WRITE 1
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nkeynes@10 | 143 | #define WATCH_READ 2
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nkeynes@10 | 144 | #define WATCH_EXEC 3 /* AKA Breakpoint :) */
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nkeynes@10 | 145 |
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nkeynes@10 | 146 | typedef struct watch_point *watch_point_t;
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nkeynes@10 | 147 |
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nkeynes@10 | 148 | watch_point_t mem_new_watch( uint32_t start, uint32_t end, int flags );
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nkeynes@10 | 149 | void mem_delete_watch( watch_point_t watch );
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nkeynes@10 | 150 | watch_point_t mem_is_watched( uint32_t addr, int size, int op );
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nkeynes@10 | 151 |
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nkeynes@953 | 152 | extern mem_region_fn_t *ext_address_space;
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nkeynes@953 | 153 |
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nkeynes@953 | 154 | #define SIGNEXT4(n) ((((int32_t)(n))<<28)>>28)
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nkeynes@953 | 155 | #define SIGNEXT8(n) ((int32_t)((int8_t)(n)))
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nkeynes@953 | 156 | #define SIGNEXT12(n) ((((int32_t)(n))<<20)>>20)
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nkeynes@953 | 157 | #define SIGNEXT16(n) ((int32_t)((int16_t)(n)))
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nkeynes@953 | 158 | #define SIGNEXT32(n) ((int64_t)((int32_t)(n)))
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nkeynes@953 | 159 | #define SIGNEXT48(n) ((((int64_t)(n))<<16)>>16)
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nkeynes@953 | 160 | #define ZEROEXT32(n) ((int64_t)((uint64_t)((uint32_t)(n))))
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nkeynes@953 | 161 |
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nkeynes@953 | 162 | /* Ensure the given region allows all of read/write/execute. If not
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nkeynes@953 | 163 | * page-aligned, some surrounding regions will similarly be unprotected.
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nkeynes@953 | 164 | */
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nkeynes@953 | 165 | void mem_unprotect( void *ptr, uint32_t size );
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nkeynes@736 | 166 |
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nkeynes@10 | 167 | #ifdef __cplusplus
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nkeynes@10 | 168 | }
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nkeynes@10 | 169 | #endif
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nkeynes@736 | 170 |
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nkeynes@736 | 171 | #endif /* !lxdream_mem_H */
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