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annotate backend.h @ 1931:374a5ae694e8 mame_interp

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Merge from default
author Michael Pavone <pavone@retrodev.com>
date Sat, 18 Apr 2020 11:42:53 -0700
parents 8fe162bdb038 0c1491818f4b
children
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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 #ifndef NEW_CORE
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12 #include "gen.h"
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13 #else
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14 typedef uint8_t * code_ptr;
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15 typedef struct {
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16 code_ptr cur;
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17 code_ptr last;
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18 uint32_t stack_off;
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19 } code_info;
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20 #endif
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21
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22 #define INVALID_OFFSET 0xFFFFFFFF
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23 #define EXTENSION_WORD 0xFFFFFFFE
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24 #define CYCLE_NEVER 0xFFFFFFFF
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25
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26 #if defined(X86_32) || defined(X86_64)
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27 typedef struct {
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28 int32_t disp;
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29 uint8_t mode;
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30 uint8_t base;
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31 uint8_t index;
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32 } host_ea;
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33 #else
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34 typedef struct {
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35 int32_t disp;
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36 uint8_t mode;
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37 uint8_t base;
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38 } host_ea;
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39 #endif
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40
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41 typedef struct {
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42 uint8_t *base;
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43 int32_t *offsets;
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44 } native_map_slot;
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45
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46 typedef struct deferred_addr {
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47 struct deferred_addr *next;
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48 code_ptr dest;
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49 uint32_t address;
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50 } deferred_addr;
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51
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52 #include "memmap.h"
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53 #include "system.h"
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54
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55 typedef struct {
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56 uint32_t flags;
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57 #ifndef NEW_CORE
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58 native_map_slot *native_code_map;
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59 deferred_addr *deferred;
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60 code_info code;
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61 uint8_t **ram_inst_sizes;
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62 #endif
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63 memmap_chunk const *memmap;
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64 #ifndef NEW_CORE
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65 code_ptr save_context;
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66 code_ptr load_context;
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67 code_ptr handle_cycle_limit;
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68 code_ptr handle_cycle_limit_int;
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69 code_ptr handle_code_write;
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70 code_ptr handle_align_error_write;
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71 code_ptr handle_align_error_read;
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72 #endif
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73 system_str_fun_r8 debug_cmd_handler;
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74 uint32_t memmap_chunks;
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75 uint32_t address_mask;
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76 uint32_t max_address;
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77 uint32_t bus_cycles;
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78 uint32_t clock_divider;
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79 #ifndef NEW_CORE
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80 uint32_t move_pc_off;
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81 uint32_t move_pc_size;
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82 int32_t mem_ptr_off;
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83 int32_t ram_flags_off;
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84 uint8_t ram_flags_shift;
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85 #endif
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86 uint8_t address_size;
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87 uint8_t byte_swap;
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88 #ifndef NEW_CORE
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89 int8_t context_reg;
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90 int8_t cycles;
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91 int8_t limit;
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92 int8_t scratch1;
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93 int8_t scratch2;
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94 uint8_t align_error_mask;
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95 #endif
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96 } cpu_options;
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97
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98 #ifndef NEW_CORE
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99 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address);
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100
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101 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest);
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102 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to);
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103 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native);
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104
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105 void cycles(cpu_options *opts, uint32_t num);
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106 void check_cycles_int(cpu_options *opts, uint32_t address);
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107 void check_cycles(cpu_options * opts);
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108 void check_code_prologue(code_info *code);
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109 void log_address(cpu_options *opts, uint32_t address, char * format);
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110
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111 void retranslate_calc(cpu_options *opts);
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112 void patch_for_retranslate(cpu_options *opts, code_ptr native_address, code_ptr handler);
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113
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114 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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115 #endif
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116 void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts);
1753
33ec5df77fac Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents: 1703
diff changeset
117 void * get_native_write_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts);
1313
b27d7bf1107e Improved printing of word at absolute address to support reading from all address types. Implemented support for printing the value pointed to by a register. Removed abuse of read_dma_value in internal debugger.
Michael Pavone <pavone@retrodev.com>
parents: 1149
diff changeset
118 uint16_t read_word(uint32_t address, void **mem_pointers, cpu_options *opts, void *context);
1838
0c1491818f4b WIP new 68K core using CPU DSL
Michael Pavone <pavone@retrodev.com>
parents: 1753
diff changeset
119 void write_word(uint32_t address, uint16_t value, void **mem_pointers, cpu_options *opts, void *context);
1703
49a52c737bf0 Fix zero flag calculation in CPU DSL
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
120 uint8_t read_byte(uint32_t address, void **mem_pointers, cpu_options *opts, void *context);
49a52c737bf0 Fix zero flag calculation in CPU DSL
Michael Pavone <pavone@retrodev.com>
parents: 1595
diff changeset
121 void write_byte(uint32_t address, uint8_t value, void **mem_pointers, cpu_options *opts, void *context);
1130
8f14767661fa Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents: 1079
diff changeset
122 memmap_chunk const *find_map_chunk(uint32_t address, cpu_options *opts, uint16_t flags, uint32_t *size_sum);
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