diff options
Diffstat (limited to 'backend.h')
| -rw-r--r-- | backend.h | 70 |
1 files changed, 47 insertions, 23 deletions
@@ -8,22 +8,25 @@ #include <stdint.h> #include <stdio.h> +#include "gen.h" #define INVALID_OFFSET 0xFFFFFFFF #define EXTENSION_WORD 0xFFFFFFFE +#define CYCLE_NEVER 0xFFFFFFFF +#if defined(X86_32) || defined(X86_64) typedef struct { int32_t disp; uint8_t mode; uint8_t base; uint8_t index; - uint8_t cycles; -} x86_ea; - -#if defined(X86_64) || defined(X86_32) -typedef uint8_t* code_ptr; +} host_ea; #else -typedef uint32_t* code_ptr; +typedef struct { + int32_t disp; + uint8_t mode; + uint8_t base; +} host_ea; #endif typedef struct { @@ -44,23 +47,6 @@ typedef enum { WRITE_8 } ftype; -typedef struct { - uint32_t flags; - native_map_slot *native_code_map; - deferred_addr *deferred; - code_ptr cur_code; - code_ptr code_end; - uint8_t **ram_inst_sizes; - code_ptr save_context; - code_ptr load_context; - code_ptr handle_cycle_limit; - code_ptr handle_cycle_limit_int; - uint8_t context_reg; - uint8_t scratch1; - uint8_t scratch2; -} cpu_options; - - #define MMAP_READ 0x01 #define MMAP_WRITE 0x02 #define MMAP_CODE 0x04 @@ -68,6 +54,7 @@ typedef struct { #define MMAP_ONLY_ODD 0x10 #define MMAP_ONLY_EVEN 0x20 #define MMAP_FUNC_NULL 0x40 +#define MMAP_BYTESWAP 0x80 typedef uint16_t (*read_16_fun)(uint32_t address, void * context); typedef uint8_t (*read_8_fun)(uint32_t address, void * context); @@ -87,11 +74,48 @@ typedef struct { write_8_fun write_8; } memmap_chunk; +typedef struct { + uint32_t flags; + native_map_slot *native_code_map; + deferred_addr *deferred; + code_info code; + uint8_t **ram_inst_sizes; + memmap_chunk const *memmap; + code_ptr save_context; + code_ptr load_context; + code_ptr handle_cycle_limit; + code_ptr handle_cycle_limit_int; + code_ptr handle_code_write; + uint32_t memmap_chunks; + uint32_t address_mask; + uint32_t max_address; + uint32_t bus_cycles; + uint32_t clock_divider; + int32_t mem_ptr_off; + int32_t ram_flags_off; + uint8_t ram_flags_shift; + uint8_t address_size; + uint8_t byte_swap; + uint8_t context_reg; + uint8_t cycles; + uint8_t limit; + uint8_t scratch1; + uint8_t scratch2; +} cpu_options; + typedef uint8_t * (*native_addr_func)(void * context, uint32_t address); deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest); void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to); void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native); +void cycles(cpu_options *opts, uint32_t num); +void check_cycles_int(cpu_options *opts, uint32_t address); +void check_cycles(cpu_options * opts); +void check_code_prologue(code_info *code); + +code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc); +void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts); + #endif //BACKEND_H_ |