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comparison backend.h @ 653:a18e3923481e

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Remove some of the hard coded assumptions about the memory map from the CPU cores
author Michael Pavone <pavone@retrodev.com>
date Thu, 01 Jan 2015 14:36:55 -0800
parents 9d6fed6501ba
children 30ccf56842d6
comparison
equal deleted inserted replaced
652:f822d9216968 653:a18e3923481e
44 READ_8, 44 READ_8,
45 WRITE_16, 45 WRITE_16,
46 WRITE_8 46 WRITE_8
47 } ftype; 47 } ftype;
48 48
49 typedef struct {
50 uint32_t flags;
51 native_map_slot *native_code_map;
52 deferred_addr *deferred;
53 code_info code;
54 uint8_t **ram_inst_sizes;
55 code_ptr save_context;
56 code_ptr load_context;
57 code_ptr handle_cycle_limit;
58 code_ptr handle_cycle_limit_int;
59 code_ptr handle_code_write;
60 uint32_t address_mask;
61 uint32_t max_address;
62 uint32_t bus_cycles;
63 int32_t mem_ptr_off;
64 int32_t ram_flags_off;
65 uint8_t ram_flags_shift;
66 uint8_t address_size;
67 uint8_t byte_swap;
68 uint8_t context_reg;
69 uint8_t cycles;
70 uint8_t limit;
71 uint8_t scratch1;
72 uint8_t scratch2;
73 } cpu_options;
74
75
76 #define MMAP_READ 0x01 49 #define MMAP_READ 0x01
77 #define MMAP_WRITE 0x02 50 #define MMAP_WRITE 0x02
78 #define MMAP_CODE 0x04 51 #define MMAP_CODE 0x04
79 #define MMAP_PTR_IDX 0x08 52 #define MMAP_PTR_IDX 0x08
80 #define MMAP_ONLY_ODD 0x10 53 #define MMAP_ONLY_ODD 0x10
98 write_16_fun write_16; 71 write_16_fun write_16;
99 read_8_fun read_8; 72 read_8_fun read_8;
100 write_8_fun write_8; 73 write_8_fun write_8;
101 } memmap_chunk; 74 } memmap_chunk;
102 75
76 typedef struct {
77 uint32_t flags;
78 native_map_slot *native_code_map;
79 deferred_addr *deferred;
80 code_info code;
81 uint8_t **ram_inst_sizes;
82 memmap_chunk const *memmap;
83 code_ptr save_context;
84 code_ptr load_context;
85 code_ptr handle_cycle_limit;
86 code_ptr handle_cycle_limit_int;
87 code_ptr handle_code_write;
88 uint32_t memmap_chunks;
89 uint32_t address_mask;
90 uint32_t max_address;
91 uint32_t bus_cycles;
92 int32_t mem_ptr_off;
93 int32_t ram_flags_off;
94 uint8_t ram_flags_shift;
95 uint8_t address_size;
96 uint8_t byte_swap;
97 uint8_t context_reg;
98 uint8_t cycles;
99 uint8_t limit;
100 uint8_t scratch1;
101 uint8_t scratch2;
102 } cpu_options;
103
103 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address); 104 typedef uint8_t * (*native_addr_func)(void * context, uint32_t address);
104 105
105 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest); 106 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest);
106 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to); 107 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to);
107 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native); 108 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native);
110 void check_cycles_int(cpu_options *opts, uint32_t address); 111 void check_cycles_int(cpu_options *opts, uint32_t address);
111 void check_cycles(cpu_options * opts); 112 void check_cycles(cpu_options * opts);
112 void check_code_prologue(code_info *code); 113 void check_code_prologue(code_info *code);
113 114
114 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc); 115 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc);
116 void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts);
115 117
116 #endif //BACKEND_H_ 118 #endif //BACKEND_H_
117 119