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annotate x86_backend.h @ 467:140af5509ce7

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Added copyright notice to source files and added GPL license text in COPYING
author Mike Pavone <pavone@retrodev.com>
date Tue, 10 Sep 2013 23:31:08 -0700
parents 2f264d2a60c2
children 5af986d2b9da
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifndef X86_BACKEND_H_
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7 #define X86_BACKEND_H_
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8
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9 #include <stdint.h>
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10
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11 #define INVALID_OFFSET 0xFFFFFFFF
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12 #define EXTENSION_WORD 0xFFFFFFFE
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14 typedef struct {
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15 int32_t disp;
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16 uint8_t mode;
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17 uint8_t base;
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18 uint8_t index;
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19 uint8_t cycles;
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20 } x86_ea;
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21
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22 typedef struct {
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23 uint8_t *base;
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24 int32_t *offsets;
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25 } native_map_slot;
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26
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27 typedef struct deferred_addr {
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28 struct deferred_addr *next;
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29 uint8_t *dest;
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30 uint32_t address;
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31 } deferred_addr;
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34 #define MMAP_READ 0x01
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35 #define MMAP_WRITE 0x02
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36 #define MMAP_CODE 0x04
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37 #define MMAP_PTR_IDX 0x08
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38 #define MMAP_ONLY_ODD 0x10
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39 #define MMAP_ONLY_EVEN 0x20
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40 #define MMAP_FUNC_NULL 0x40
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41
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42 typedef uint16_t (*read_16_fun)(uint32_t address, void * context);
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43 typedef uint8_t (*read_8_fun)(uint32_t address, void * context);
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44 typedef void * (*write_16_fun)(uint32_t address, void * context, uint16_t value);
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45 typedef void * (*write_8_fun)(uint32_t address, void * context, uint8_t value);
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46
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47 typedef struct {
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48 uint32_t start;
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49 uint32_t end;
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50 uint32_t mask;
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51 uint16_t ptr_index;
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52 uint16_t flags;
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53 void * buffer;
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54 read_16_fun read_16;
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55 write_16_fun write_16;
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56 read_8_fun read_8;
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57 write_8_fun write_8;
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58 } memmap_chunk;
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60 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address);
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61
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62 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest);
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63 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to);
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64 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native);
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66 #endif //X86_BACKEND_H_
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