Mercurial > repos > blastem
annotate backend.h @ 974:fd7702bcc034
FindFirstFile makes more sense for getting modification times of a path than using CreateFile and GetFileTimes
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 22 Apr 2016 19:18:15 -0700 |
parents | 7f96bd1cb1be |
children | 1f09994e92c5 |
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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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9 #include <stdint.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) |
211 | 18 typedef struct { |
19 int32_t disp; | |
20 uint8_t mode; | |
21 uint8_t base; | |
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 |
211 | 31 |
32 typedef struct { | |
33 uint8_t *base; | |
34 int32_t *offsets; | |
35 } native_map_slot; | |
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 uint32_t memmap_chunks; |
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90 uint32_t address_mask; |
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91 uint32_t max_address; |
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92 uint32_t bus_cycles; |
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93 uint32_t clock_divider; |
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94 int32_t mem_ptr_off; |
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95 int32_t ram_flags_off; |
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96 uint8_t ram_flags_shift; |
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97 uint8_t address_size; |
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98 uint8_t byte_swap; |
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99 uint8_t context_reg; |
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100 uint8_t cycles; |
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101 uint8_t limit; |
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102 uint8_t scratch1; |
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103 uint8_t scratch2; |
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104 } cpu_options; |
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105 |
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106 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address); |
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107 |
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108 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest); |
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109 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to); |
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110 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native); |
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111 |
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112 void cycles(cpu_options *opts, uint32_t num); |
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113 void check_cycles_int(cpu_options *opts, uint32_t address); |
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114 void check_cycles(cpu_options * opts); |
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115 void check_code_prologue(code_info *code); |
697
7f96bd1cb1be
Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents:
690
diff
changeset
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116 void log_address(cpu_options *opts, uint32_t address, char * format); |
567
8e395210f50f
Refactor gen_x86 to use an interface more like gen_arm and to remove the need for the caller to decide whether an 8-bit or 32-bit displacement is needed in the rdisp functions. Update m68k_to_x86 to use the new version of the gen_x86 functions and do some minor refactoring there in the process
Michael Pavone <pavone@retrodev.com>
parents:
563
diff
changeset
|
117 |
593
5ef3fe516da9
Z80 core is sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
592
diff
changeset
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118 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc); |
653
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
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119 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
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120 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
|
121 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
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122 |
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
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123 #endif //BACKEND_H_ |
211 | 124 |