Mercurial > repos > blastem
annotate z80_to_x86.h @ 900:30efd12b1be1
Replace some hard-coded instruction length assumptions with a calculation so they will work properly on both 32-bit and 64-bit hosts
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 27 Nov 2015 10:47:35 -0800 |
parents | 252dfd29831d |
children | 1eb616b8cbe9 |
rev | line source |
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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 Z80_TO_X86_H_ |
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7 #define Z80_TO_X86_H_ |
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8 #include "z80inst.h" |
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9 #include "backend.h" |
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10 |
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11 #define ZNUM_MEM_AREAS 4 |
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12 #ifdef Z80_LOG_ADDRESS |
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13 #define ZMAX_NATIVE_SIZE 255 |
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14 #else |
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15 #define ZMAX_NATIVE_SIZE 128 |
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16 #endif |
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17 |
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18 enum { |
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19 ZF_C = 0, |
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20 ZF_N, |
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21 ZF_PV, |
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22 ZF_H, |
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23 ZF_Z, |
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24 ZF_S, |
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25 ZF_NUM |
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26 }; |
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27 |
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28 typedef void (*z80_run_fun)(void * context); |
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29 |
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30 typedef struct { |
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31 cpu_options gen; |
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32 code_ptr save_context_scratch; |
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33 code_ptr load_context_scratch; |
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34 code_ptr native_addr; |
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35 code_ptr retrans_stub; |
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36 code_ptr do_sync; |
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37 code_ptr read_8; |
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38 code_ptr write_8; |
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39 code_ptr read_8_noinc; |
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40 code_ptr write_8_noinc; |
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41 code_ptr read_16; |
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42 code_ptr write_16_highfirst; |
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43 code_ptr write_16_lowfirst; |
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44 code_ptr read_io; |
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45 code_ptr write_io; |
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46 |
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47 uint32_t flags; |
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48 int8_t regs[Z80_UNUSED]; |
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49 z80_run_fun run; |
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50 } z80_options; |
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51 |
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52 typedef struct { |
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53 void * native_pc; |
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54 uint16_t sp; |
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55 uint8_t flags[ZF_NUM]; |
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56 uint16_t bank_reg; |
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57 uint8_t regs[Z80_A+1]; |
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58 uint8_t im; |
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59 uint8_t alt_regs[Z80_A+1]; |
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60 uint32_t target_cycle; |
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61 uint32_t current_cycle; |
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62 uint8_t alt_flags[ZF_NUM]; |
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63 uint8_t * mem_pointers[ZNUM_MEM_AREAS]; |
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64 uint8_t iff1; |
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65 uint8_t iff2; |
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66 uint16_t scratch1; |
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67 uint16_t scratch2; |
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68 void * extra_pc; |
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69 uint32_t sync_cycle; |
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70 uint32_t int_cycle; |
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71 native_map_slot * static_code_map; |
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72 native_map_slot * banked_code_map; |
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73 z80_options * options; |
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74 void * system; |
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75 uint8_t ram_code_flags[(8 * 1024)/128/8]; |
335 | 76 uint32_t int_enable_cycle; |
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77 uint16_t pc; |
628 | 78 uint32_t int_pulse_start; |
79 uint32_t int_pulse_end; | |
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80 uint8_t breakpoint_flags[(16 * 1024)/sizeof(uint8_t)]; |
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81 uint8_t * bp_handler; |
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82 uint8_t * bp_stub; |
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83 uint8_t * interp_code[256]; |
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84 uint8_t reset; |
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85 uint8_t busreq; |
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86 uint8_t busack; |
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87 } z80_context; |
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88 |
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89 void translate_z80_stream(z80_context * context, uint32_t address); |
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90 void init_z80_opts(z80_options * options, memmap_chunk const * chunks, uint32_t num_chunks, memmap_chunk const * io_chunks, uint32_t num_io_chunks, uint32_t clock_divider); |
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91 void z80_options_free(z80_options *opts); |
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92 void init_z80_context(z80_context * context, z80_options * options); |
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93 code_ptr z80_get_native_address(z80_context * context, uint32_t address); |
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94 code_ptr z80_get_native_address_trans(z80_context * context, uint32_t address); |
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95 z80_context * z80_handle_code_write(uint32_t address, z80_context * context); |
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96 void z80_reset(z80_context * context); |
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97 void zinsert_breakpoint(z80_context * context, uint16_t address, uint8_t * bp_handler); |
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98 void zremove_breakpoint(z80_context * context, uint16_t address); |
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99 void z80_run(z80_context * context, uint32_t target_cycle); |
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100 void z80_assert_reset(z80_context * context, uint32_t cycle); |
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101 void z80_clear_reset(z80_context * context, uint32_t cycle); |
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102 void z80_assert_busreq(z80_context * context, uint32_t cycle); |
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103 void z80_clear_busreq(z80_context * context, uint32_t cycle); |
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Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents:
667
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changeset
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104 uint8_t z80_get_busack(z80_context * context, uint32_t cycle); |
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents:
667
diff
changeset
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105 void z80_adjust_cycles(z80_context * context, uint32_t deduction); |
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents:
667
diff
changeset
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106 //to be provided by system code |
5439ae7946ca
Made the Z80 core more contained by refactoring some code in blastem.c into z80_to_x86.c
Michael Pavone <pavone@retrodev.com>
parents:
667
diff
changeset
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107 void z80_next_int_pulse(z80_context * z_context); |
213
4d4559b04c59
Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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108 |
4d4559b04c59
Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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109 #endif //Z80_TO_X86_H_ |
4d4559b04c59
Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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110 |