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annotate x86_backend.h @ 466:bc9e0829ffc7

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Fix vgmplay
author Mike Pavone <pavone@retrodev.com>
date Tue, 10 Sep 2013 21:20:54 -0700
parents 2f264d2a60c2
children 140af5509ce7
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1 #ifndef X86_BACKEND_H_
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2 #define X86_BACKEND_H_
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3
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4 #include <stdint.h>
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5
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6 #define INVALID_OFFSET 0xFFFFFFFF
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7 #define EXTENSION_WORD 0xFFFFFFFE
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8
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9 typedef struct {
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10 int32_t disp;
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11 uint8_t mode;
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12 uint8_t base;
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13 uint8_t index;
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14 uint8_t cycles;
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15 } x86_ea;
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16
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17 typedef struct {
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18 uint8_t *base;
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19 int32_t *offsets;
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20 } native_map_slot;
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21
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22 typedef struct deferred_addr {
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23 struct deferred_addr *next;
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24 uint8_t *dest;
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25 uint32_t address;
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26 } deferred_addr;
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29 #define MMAP_READ 0x01
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30 #define MMAP_WRITE 0x02
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31 #define MMAP_CODE 0x04
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32 #define MMAP_PTR_IDX 0x08
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33 #define MMAP_ONLY_ODD 0x10
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34 #define MMAP_ONLY_EVEN 0x20
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35 #define MMAP_FUNC_NULL 0x40
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36
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37 typedef uint16_t (*read_16_fun)(uint32_t address, void * context);
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38 typedef uint8_t (*read_8_fun)(uint32_t address, void * context);
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39 typedef void * (*write_16_fun)(uint32_t address, void * context, uint16_t value);
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40 typedef void * (*write_8_fun)(uint32_t address, void * context, uint8_t value);
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42 typedef struct {
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43 uint32_t start;
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44 uint32_t end;
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45 uint32_t mask;
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46 uint16_t ptr_index;
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47 uint16_t flags;
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48 void * buffer;
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49 read_16_fun read_16;
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50 write_16_fun write_16;
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51 read_8_fun read_8;
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52 write_8_fun write_8;
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53 } memmap_chunk;
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55 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address);
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57 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest);
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58 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to);
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59 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native);
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61 #endif //X86_BACKEND_H_
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