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annotate backend.h @ 1021:4a92889e2889 v0.4.0

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Fix OS X build
author Michael Pavone <pavone@retrodev.com>
date Wed, 04 May 2016 00:50:20 -0700
parents 1f09994e92c5
children 6b07af1515b5
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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 BACKEND_H_
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7 #define BACKEND_H_
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8
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9 #include <stdint.h>
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10 #include <stdio.h>
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11 #include "gen.h"
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12
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13 #define INVALID_OFFSET 0xFFFFFFFF
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14 #define EXTENSION_WORD 0xFFFFFFFE
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15 #define CYCLE_NEVER 0xFFFFFFFF
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16
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17 #if defined(X86_32) || defined(X86_64)
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18 typedef struct {
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19 int32_t disp;
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20 uint8_t mode;
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21 uint8_t base;
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22 uint8_t index;
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23 } host_ea;
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24 #else
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25 typedef struct {
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26 int32_t disp;
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27 uint8_t mode;
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28 uint8_t base;
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29 } host_ea;
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30 #endif
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31
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32 typedef struct {
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33 uint8_t *base;
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34 int32_t *offsets;
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35 } native_map_slot;
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36
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37 typedef struct deferred_addr {
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38 struct deferred_addr *next;
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39 code_ptr dest;
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40 uint32_t address;
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41 } deferred_addr;
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42
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43 typedef enum {
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44 READ_16,
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45 READ_8,
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46 WRITE_16,
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47 WRITE_8
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48 } ftype;
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49
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50 #define MMAP_READ 0x01
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51 #define MMAP_WRITE 0x02
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52 #define MMAP_CODE 0x04
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53 #define MMAP_PTR_IDX 0x08
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54 #define MMAP_ONLY_ODD 0x10
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55 #define MMAP_ONLY_EVEN 0x20
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56 #define MMAP_FUNC_NULL 0x40
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57 #define MMAP_BYTESWAP 0x80
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58
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59 typedef uint16_t (*read_16_fun)(uint32_t address, void * context);
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60 typedef uint8_t (*read_8_fun)(uint32_t address, void * context);
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61 typedef void * (*write_16_fun)(uint32_t address, void * context, uint16_t value);
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62 typedef void * (*write_8_fun)(uint32_t address, void * context, uint8_t value);
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63
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64 typedef struct {
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65 uint32_t start;
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66 uint32_t end;
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67 uint32_t mask;
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68 uint16_t ptr_index;
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69 uint16_t flags;
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70 void * buffer;
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71 read_16_fun read_16;
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72 write_16_fun write_16;
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73 read_8_fun read_8;
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74 write_8_fun write_8;
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75 } memmap_chunk;
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76
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77 typedef struct {
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78 uint32_t flags;
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79 native_map_slot *native_code_map;
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80 deferred_addr *deferred;
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81 code_info code;
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82 uint8_t **ram_inst_sizes;
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83 memmap_chunk const *memmap;
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84 code_ptr save_context;
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85 code_ptr load_context;
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86 code_ptr handle_cycle_limit;
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87 code_ptr handle_cycle_limit_int;
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88 code_ptr handle_code_write;
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89 code_ptr handle_align_error_write;
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90 code_ptr handle_align_error_read;
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91 uint32_t memmap_chunks;
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92 uint32_t address_mask;
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93 uint32_t max_address;
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94 uint32_t bus_cycles;
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95 uint32_t clock_divider;
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96 int32_t mem_ptr_off;
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97 int32_t ram_flags_off;
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98 uint8_t ram_flags_shift;
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99 uint8_t address_size;
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100 uint8_t byte_swap;
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101 uint8_t context_reg;
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102 uint8_t cycles;
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103 uint8_t limit;
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104 uint8_t scratch1;
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105 uint8_t scratch2;
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106 uint8_t align_error_mask;
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107 } cpu_options;
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108
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109 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address);
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110
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111 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest);
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112 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to);
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113 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native);
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114
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115 void cycles(cpu_options *opts, uint32_t num);
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116 void check_cycles_int(cpu_options *opts, uint32_t address);
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117 void check_cycles(cpu_options * opts);
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118 void check_code_prologue(code_info *code);
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119 void log_address(cpu_options *opts, uint32_t address, char * format);
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120
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diff changeset
121 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc);
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a18e3923481e Remove some of the hard coded assumptions about the memory map from the CPU cores
Michael Pavone <pavone@retrodev.com>
parents: 620
diff changeset
122 void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts);
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 668
diff changeset
123 uint32_t chunk_size(cpu_options *opts, memmap_chunk const *chunk);
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 668
diff changeset
124 uint32_t ram_size(cpu_options *opts);
589
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
Michael Pavone <pavone@retrodev.com>
parents: 582
diff changeset
125
557
acec5464fa1e Rename x86_backend.h and x86_backend.c to backend.h and backend.c respectively
Mike Pavone <pavone@retrodev.com>
parents: 556
diff changeset
126 #endif //BACKEND_H_
211
464513050c85 Small bit of cleanup
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
127