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annotate backend_x86.c @ 690:fc04781f4d28

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Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
author Michael Pavone <pavone@retrodev.com>
date Wed, 14 Jan 2015 09:38:54 -0800
parents 30ccf56842d6
children e11e68918691
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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:
diff changeset
1 #include "backend.h"
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>
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diff changeset
2 #include "gen_x86.h"
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>
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diff changeset
3
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>
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diff changeset
4 void cycles(cpu_options *opts, uint32_t num)
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
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5 {
667
30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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parents: 658
diff changeset
6 add_ir(&opts->code, num*opts->clock_divider, opts->cycles, SZ_D);
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:
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7 }
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
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parents:
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8
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>
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diff changeset
9 void check_cycles_int(cpu_options *opts, uint32_t address)
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:
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10 {
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
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11 code_info *code = &opts->code;
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
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12 cmp_rr(code, opts->cycles, opts->limit, SZ_D);
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
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13 code_ptr jmp_off = code->cur+1;
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
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14 jcc(code, CC_NC, jmp_off+1);
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
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15 mov_ir(code, address, opts->scratch1, SZ_D);
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
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16 call(code, opts->handle_cycle_limit_int);
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
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17 *jmp_off = code->cur - (jmp_off+1);
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
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18 }
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
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19
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
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20 void check_cycles(cpu_options * opts)
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
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parents:
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21 {
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
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22 code_info *code = &opts->code;
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
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parents:
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23 cmp_rr(code, opts->cycles, opts->limit, SZ_D);
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
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24 check_alloc_code(code, MAX_INST_LEN*2);
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
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25 code_ptr jmp_off = code->cur+1;
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
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26 jcc(code, CC_NC, jmp_off+1);
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
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27 call(code, opts->handle_cycle_limit);
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
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28 *jmp_off = code->cur - (jmp_off+1);
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
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29 }
589
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30
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f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
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31 void check_code_prologue(code_info *code)
f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
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32 {
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33 check_alloc_code(code, MAX_INST_LEN*4);
f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
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34 }
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35
593
5ef3fe516da9 Z80 core is sort of working again
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36 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc)
589
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37 {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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38 code_info *code = &opts->code;
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39 code_ptr start = code->cur;
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40 check_cycles(opts);
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41 cycles(opts, opts->bus_cycles);
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ea80559c67cb WIP effort to update z80 core for code gen changes
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42 if (after_inc) {
ea80559c67cb WIP effort to update z80 core for code gen changes
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43 *after_inc = code->cur;
ea80559c67cb WIP effort to update z80 core for code gen changes
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44 }
589
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45 if (opts->address_size == SZ_D && opts->address_mask < 0xFFFFFFFF) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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46 and_ir(code, opts->address_mask, opts->scratch1, SZ_D);
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47 }
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48 code_ptr lb_jcc = NULL, ub_jcc = NULL;
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49 uint8_t is_write = fun_type == WRITE_16 || fun_type == WRITE_8;
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50 uint8_t adr_reg = is_write ? opts->scratch2 : opts->scratch1;
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51 uint16_t access_flag = is_write ? MMAP_WRITE : MMAP_READ;
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52 uint8_t size = (fun_type == READ_16 || fun_type == WRITE_16) ? SZ_W : SZ_B;
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fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
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53 uint32_t ram_flags_off = opts->ram_flags_off;
589
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54 for (uint32_t chunk = 0; chunk < num_chunks; chunk++)
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55 {
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56 if (memmap[chunk].start > 0) {
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57 cmp_ir(code, memmap[chunk].start, adr_reg, opts->address_size);
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58 lb_jcc = code->cur + 1;
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59 jcc(code, CC_C, code->cur + 2);
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60 }
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61 if (memmap[chunk].end < opts->max_address) {
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62 cmp_ir(code, memmap[chunk].end, adr_reg, opts->address_size);
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63 ub_jcc = code->cur + 1;
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64 jcc(code, CC_NC, code->cur + 2);
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65 }
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66
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67 if (memmap[chunk].mask != opts->address_mask) {
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68 and_ir(code, memmap[chunk].mask, adr_reg, opts->address_size);
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69 }
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70 void * cfun;
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71 switch (fun_type)
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72 {
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73 case READ_16:
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74 cfun = memmap[chunk].read_16;
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75 break;
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76 case READ_8:
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77 cfun = memmap[chunk].read_8;
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78 break;
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79 case WRITE_16:
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80 cfun = memmap[chunk].write_16;
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81 break;
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82 case WRITE_8:
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83 cfun = memmap[chunk].write_8;
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parents: 567
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84 break;
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85 default:
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
86 cfun = NULL;
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
87 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
88 if(memmap[chunk].flags & access_flag) {
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
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parents: 567
diff changeset
89 if (memmap[chunk].flags & MMAP_PTR_IDX) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
90 if (memmap[chunk].flags & MMAP_FUNC_NULL) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
91 cmp_irdisp(code, 0, opts->context_reg, opts->mem_ptr_off + sizeof(void*) * memmap[chunk].ptr_index, SZ_PTR);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
92 code_ptr not_null = code->cur + 1;
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
93 jcc(code, CC_NZ, code->cur + 2);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
94 call(code, opts->save_context);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
95 if (is_write) {
658
6aa29ac33f1a Use call_args and call_args_abi inside gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 620
diff changeset
96 call_args_abi(code, cfun, 3, opts->scratch2, opts->context_reg, opts->scratch1);
6aa29ac33f1a Use call_args and call_args_abi inside gen_mem_fun
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parents: 620
diff changeset
97 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
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
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parents: 567
diff changeset
98 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
99 push_r(code, opts->context_reg);
658
6aa29ac33f1a Use call_args and call_args_abi inside gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 620
diff changeset
100 call_args_abi(code, cfun, 2, opts->scratch1, opts->context_reg);
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
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parents: 567
diff changeset
101 pop_r(code, opts->context_reg);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
102 mov_rr(code, RAX, opts->scratch1, size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
103 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
104 jmp(code, opts->load_context);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
105
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
106 *not_null = code->cur - (not_null + 1);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
107 }
604
39d7d463ed5b Get Z80 banked access sort of working again
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diff changeset
108 if ((opts->byte_swap || memmap[chunk].flags & MMAP_BYTESWAP) && size == SZ_B) {
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
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diff changeset
109 xor_ir(code, 1, adr_reg, opts->address_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
110 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
111 if (opts->address_size != SZ_D) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
112 movzx_rr(code, adr_reg, adr_reg, opts->address_size, SZ_D);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
113 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
114 add_rdispr(code, opts->context_reg, opts->mem_ptr_off + sizeof(void*) * memmap[chunk].ptr_index, adr_reg, SZ_PTR);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
115 if (is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
116 mov_rrind(code, opts->scratch1, opts->scratch2, size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
117
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diff changeset
118 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
119 mov_rindr(code, opts->scratch1, opts->scratch1, size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
120 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
121 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
122 uint8_t tmp_size = size;
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
123 if (size == SZ_B) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
124 if ((memmap[chunk].flags & MMAP_ONLY_ODD) || (memmap[chunk].flags & MMAP_ONLY_EVEN)) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
125 bt_ir(code, 0, adr_reg, opts->address_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
126 code_ptr good_addr = code->cur + 1;
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
127 jcc(code, (memmap[chunk].flags & MMAP_ONLY_ODD) ? CC_C : CC_NC, code->cur + 2);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
128 if (!is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
129 mov_ir(code, 0xFF, opts->scratch1, SZ_B);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
130 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
131 retn(code);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
132 *good_addr = code->cur - (good_addr + 1);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
133 shr_ir(code, 1, adr_reg, opts->address_size);
604
39d7d463ed5b Get Z80 banked access sort of working again
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parents: 601
diff changeset
134 } else if (opts->byte_swap || memmap[chunk].flags & MMAP_BYTESWAP) {
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
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diff changeset
135 xor_ir(code, 1, adr_reg, opts->address_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
136 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
137 } else if ((memmap[chunk].flags & MMAP_ONLY_ODD) || (memmap[chunk].flags & MMAP_ONLY_EVEN)) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
138 tmp_size = SZ_B;
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diff changeset
139 shr_ir(code, 1, adr_reg, opts->address_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
140 if ((memmap[chunk].flags & MMAP_ONLY_EVEN) && is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
141 shr_ir(code, 8, opts->scratch1, SZ_W);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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diff changeset
142 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
143 }
595
68f86ca4bb32 Add a couple of missing checks for the byte_swap and address_size parameters in gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 593
diff changeset
144 if (opts->address_size != SZ_D) {
68f86ca4bb32 Add a couple of missing checks for the byte_swap and address_size parameters in gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 593
diff changeset
145 movzx_rr(code, adr_reg, adr_reg, opts->address_size, SZ_D);
68f86ca4bb32 Add a couple of missing checks for the byte_swap and address_size parameters in gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 593
diff changeset
146 }
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
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parents: 567
diff changeset
147 if ((intptr_t)memmap[chunk].buffer <= 0x7FFFFFFF && (intptr_t)memmap[chunk].buffer >= -2147483648) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
148 if (is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
149 mov_rrdisp(code, opts->scratch1, opts->scratch2, (intptr_t)memmap[chunk].buffer, tmp_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
150 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
151 mov_rdispr(code, opts->scratch1, (intptr_t)memmap[chunk].buffer, opts->scratch1, tmp_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
152 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
153 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
154 if (is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
155 push_r(code, opts->scratch1);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
156 mov_ir(code, (intptr_t)memmap[chunk].buffer, opts->scratch1, SZ_PTR);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
157 add_rr(code, opts->scratch1, opts->scratch2, SZ_PTR);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
158 pop_r(code, opts->scratch1);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
159 mov_rrind(code, opts->scratch1, opts->scratch2, tmp_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
160 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
161 mov_ir(code, (intptr_t)memmap[chunk].buffer, opts->scratch2, SZ_PTR);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
162 mov_rindexr(code, opts->scratch2, opts->scratch1, 1, opts->scratch1, tmp_size);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
163 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
164 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
165 if (size != tmp_size && !is_write) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
166 if (memmap[chunk].flags & MMAP_ONLY_EVEN) {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
167 shl_ir(code, 8, opts->scratch1, SZ_W);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
168 mov_ir(code, 0xFF, opts->scratch1, SZ_B);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
169 } else {
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
170 or_ir(code, 0xFF00, opts->scratch1, SZ_W);
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
171 }
2dde38c1744f Split gen_mem_fun out of m68k_core_x86 and make it more generic so it can be used by the Z80 core
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parents: 567
diff changeset
172 }
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: 567
diff changeset
173 }
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: 567
diff changeset
174 if (is_write && (memmap[chunk].flags & MMAP_CODE)) {
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: 567
diff changeset
175 mov_rr(code, opts->scratch2, opts->scratch1, opts->address_size);
620
9d6fed6501ba Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
Michael Pavone <pavone@retrodev.com>
parents: 604
diff changeset
176 shr_ir(code, opts->ram_flags_shift, opts->scratch1, opts->address_size);
690
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
177 bt_rrdisp(code, opts->scratch1, opts->context_reg, ram_flags_off, opts->address_size);
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
178 if (memmap[chunk].mask == opts->address_mask) {
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
179 ram_flags_off += memmap[chunk].end - memmap[chunk].start;
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
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parents: 667
diff changeset
180 } else {
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
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parents: 667
diff changeset
181 ram_flags_off += memmap[chunk].mask + 1;
fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
Michael Pavone <pavone@retrodev.com>
parents: 667
diff changeset
182 }
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
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parents: 567
diff changeset
183 code_ptr not_code = code->cur + 1;
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184 jcc(code, CC_NC, code->cur + 2);
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185 call(code, opts->save_context);
658
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186 call_args(code, opts->handle_code_write, 2, opts->scratch2, opts->context_reg);
589
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187 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
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188 call(code, opts->load_context);
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189 *not_code = code->cur - (not_code+1);
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190 }
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191 retn(code);
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192 } else if (cfun) {
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193 call(code, opts->save_context);
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194 if (is_write) {
658
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195 call_args_abi(code, cfun, 3, opts->scratch2, opts->context_reg, opts->scratch1);
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196 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
589
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197 } else {
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198 push_r(code, opts->context_reg);
658
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199 call_args_abi(code, cfun, 2, opts->scratch1, opts->context_reg);
589
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200 pop_r(code, opts->context_reg);
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201 mov_rr(code, RAX, opts->scratch1, size);
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202 }
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203 jmp(code, opts->load_context);
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204 } else {
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205 //Not sure the best course of action here
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206 if (!is_write) {
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207 mov_ir(code, size == SZ_B ? 0xFF : 0xFFFF, opts->scratch1, size);
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208 }
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209 retn(code);
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210 }
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211 if (lb_jcc) {
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212 *lb_jcc = code->cur - (lb_jcc+1);
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213 lb_jcc = NULL;
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214 }
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215 if (ub_jcc) {
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216 *ub_jcc = code->cur - (ub_jcc+1);
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217 ub_jcc = NULL;
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218 }
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219 }
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220 if (!is_write) {
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221 mov_ir(code, size == SZ_B ? 0xFF : 0xFFFF, opts->scratch1, size);
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222 }
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223 retn(code);
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224 return start;
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225 }