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annotate backend_x86.c @ 781:51c3e571eeb1

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Remove debug printf from EEPROM code
author Michael Pavone <pavone@retrodev.com>
date Mon, 20 Jul 2015 23:18:29 -0700
parents 656b1fded67f
children 381a3b2f6065
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
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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
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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
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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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6 add_ir(&opts->code, num*opts->clock_divider, opts->cycles, SZ_D);
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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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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
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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
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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;
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12 cmp_rr(code, opts->cycles, opts->limit, SZ_D);
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13 code_ptr jmp_off = code->cur+1;
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14 jcc(code, CC_A, jmp_off+1);
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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);
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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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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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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;
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26 jcc(code, CC_A, jmp_off+1);
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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);
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29 }
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30
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31 void log_address(cpu_options *opts, uint32_t address, char * format)
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32 {
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33 code_info *code = &opts->code;
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34 call(code, opts->save_context);
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35 push_r(code, opts->context_reg);
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36 mov_rr(code, opts->cycles, RDX, SZ_D);
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37 mov_ir(code, (int64_t)format, RDI, SZ_PTR);
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38 mov_ir(code, address, RSI, SZ_D);
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39 call_args_abi(code, (code_ptr)printf, 3, RDI, RSI, RDX);
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40 pop_r(code, opts->context_reg);
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41 call(code, opts->load_context);
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42 }
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43
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44 void check_code_prologue(code_info *code)
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45 {
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46 check_alloc_code(code, MAX_INST_LEN*4);
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47 }
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48
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49 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc)
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50 {
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51 code_info *code = &opts->code;
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52 code_ptr start = code->cur;
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53 check_cycles(opts);
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54 cycles(opts, opts->bus_cycles);
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55 if (after_inc) {
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56 *after_inc = code->cur;
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57 }
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58 uint8_t is_write = fun_type == WRITE_16 || fun_type == WRITE_8;
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59 uint8_t adr_reg = is_write ? opts->scratch2 : opts->scratch1;
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60 if (opts->address_size == SZ_D && opts->address_mask != 0xFFFFFFFF) {
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61 and_ir(code, opts->address_mask, adr_reg, SZ_D);
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62 }
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63 code_ptr lb_jcc = NULL, ub_jcc = NULL;
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64 uint16_t access_flag = is_write ? MMAP_WRITE : MMAP_READ;
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65 uint8_t size = (fun_type == READ_16 || fun_type == WRITE_16) ? SZ_W : SZ_B;
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66 uint32_t ram_flags_off = opts->ram_flags_off;
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67 for (uint32_t chunk = 0; chunk < num_chunks; chunk++)
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68 {
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69 if (memmap[chunk].start > 0) {
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70 cmp_ir(code, memmap[chunk].start, adr_reg, opts->address_size);
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71 lb_jcc = code->cur + 1;
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72 jcc(code, CC_C, code->cur + 2);
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73 }
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74 if (memmap[chunk].end < opts->max_address) {
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75 cmp_ir(code, memmap[chunk].end, adr_reg, opts->address_size);
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76 ub_jcc = code->cur + 1;
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77 jcc(code, CC_NC, code->cur + 2);
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78 }
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79
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80 if (memmap[chunk].mask != opts->address_mask) {
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81 and_ir(code, memmap[chunk].mask, adr_reg, opts->address_size);
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82 }
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83 void * cfun;
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84 switch (fun_type)
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85 {
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86 case READ_16:
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87 cfun = memmap[chunk].read_16;
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88 break;
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89 case READ_8:
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90 cfun = memmap[chunk].read_8;
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Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
91 break;
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
92 case WRITE_16:
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
93 cfun = memmap[chunk].write_16;
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
94 break;
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
95 case WRITE_8:
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
96 cfun = memmap[chunk].write_8;
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
97 break;
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
98 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
99 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
100 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
101 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
102 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
103 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
104 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
105 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
106 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
107 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
108 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
109 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
Michael Pavone <pavone@retrodev.com>
parents: 620
diff changeset
110 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
111 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
112 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
113 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
114 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
115 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
116 }
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
117 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
118
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
119 *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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
120 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
121 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
122 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
123 }
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
124 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
125 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
126 }
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
127 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
Michael Pavone <pavone@retrodev.com>
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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
129 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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parents: 567
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 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
132 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
133 }
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
134 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
135 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
136 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
137 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
138 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
139 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
140 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
141 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
142 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
143 }
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
144 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
145 *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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
146 shr_ir(code, 1, adr_reg, opts->address_size);
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
147 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
148 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
149 }
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
150 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
151 tmp_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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
152 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
153 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
154 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
155 }
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
156 }
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
157 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
158 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
159 }
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: 567
diff changeset
160 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
161 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
162 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
163 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
164 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
165 }
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
166 } 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
167 if (is_write) {
760
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
168 push_r(code, opts->scratch2);
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
169 mov_ir(code, (intptr_t)memmap[chunk].buffer, opts->scratch2, SZ_PTR);
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
170 add_rdispr(code, RSP, 0, opts->scratch2, 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
171 mov_rrind(code, opts->scratch1, opts->scratch2, tmp_size);
760
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
172 if (is_write && (memmap[chunk].flags & MMAP_CODE)) {
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
173 pop_r(code, opts->scratch2);
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
174 } else {
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
175 add_ir(code, sizeof(void*), RSP, SZ_D);
656b1fded67f Fix self modifying code checks on platforms like OS X on which guest RAM ends up at an address unreachable with a 32-bit displacement
Michael Pavone <pavone@retrodev.com>
parents: 756
diff changeset
176 }
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: 567
diff changeset
177 } else {
756
e1dc98f7ed9f Preserve scratch2 when using it as a temporary in memory read functions. This fixes a bunch of issues with the Z80 core and possibly some issues with the 68K core as well
Michael Pavone <pavone@retrodev.com>
parents: 750
diff changeset
178 push_r(code, opts->scratch2);
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: 567
diff changeset
179 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
180 mov_rindexr(code, opts->scratch2, opts->scratch1, 1, opts->scratch1, tmp_size);
756
e1dc98f7ed9f Preserve scratch2 when using it as a temporary in memory read functions. This fixes a bunch of issues with the Z80 core and possibly some issues with the 68K core as well
Michael Pavone <pavone@retrodev.com>
parents: 750
diff changeset
181 pop_r(code, opts->scratch2);
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: 567
diff changeset
182 }
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
183 }
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
184 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
185 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
186 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
187 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
188 } else {
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189 or_ir(code, 0xFF00, opts->scratch1, SZ_W);
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190 }
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191 }
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192 }
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193 if (is_write && (memmap[chunk].flags & MMAP_CODE)) {
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194 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.
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parents: 604
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195 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
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196 bt_rrdisp(code, opts->scratch1, opts->context_reg, ram_flags_off, opts->address_size);
692
e11e68918691 Fix bug in map_native_address that was breaking some self-modifying code in Gunstar Heroes
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parents: 690
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197 //FIXME: These adjustments to ram_flags_off need to take into account bits vs bytes and ram_flags_shift
690
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198 if (memmap[chunk].mask == opts->address_mask) {
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199 ram_flags_off += memmap[chunk].end - memmap[chunk].start;
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200 } else {
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201 ram_flags_off += memmap[chunk].mask + 1;
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202 }
589
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203 code_ptr not_code = code->cur + 1;
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204 jcc(code, CC_NC, code->cur + 2);
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205 call(code, opts->save_context);
658
6aa29ac33f1a Use call_args and call_args_abi inside gen_mem_fun
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206 call_args(code, opts->handle_code_write, 2, opts->scratch2, opts->context_reg);
589
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207 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
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208 call(code, opts->load_context);
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209 *not_code = code->cur - (not_code+1);
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210 }
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211 retn(code);
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212 } else if (cfun) {
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diff changeset
213 call(code, opts->save_context);
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214 if (is_write) {
658
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parents: 620
diff changeset
215 call_args_abi(code, cfun, 3, opts->scratch2, opts->context_reg, opts->scratch1);
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diff changeset
216 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
589
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diff changeset
217 } else {
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diff changeset
218 push_r(code, opts->context_reg);
658
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parents: 620
diff changeset
219 call_args_abi(code, cfun, 2, opts->scratch1, opts->context_reg);
589
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diff changeset
220 pop_r(code, opts->context_reg);
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221 mov_rr(code, RAX, opts->scratch1, size);
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222 }
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diff changeset
223 jmp(code, opts->load_context);
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224 } else {
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225 //Not sure the best course of action here
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diff changeset
226 if (!is_write) {
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diff changeset
227 mov_ir(code, size == SZ_B ? 0xFF : 0xFFFF, opts->scratch1, size);
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228 }
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diff changeset
229 retn(code);
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230 }
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parents: 567
diff changeset
231 if (lb_jcc) {
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parents: 567
diff changeset
232 *lb_jcc = code->cur - (lb_jcc+1);
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diff changeset
233 lb_jcc = NULL;
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234 }
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parents: 567
diff changeset
235 if (ub_jcc) {
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diff changeset
236 *ub_jcc = code->cur - (ub_jcc+1);
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parents: 567
diff changeset
237 ub_jcc = NULL;
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238 }
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parents: 567
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239 }
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
240 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
241 mov_ir(code, size == SZ_B ? 0xFF : 0xFFFF, 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
242 }
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parents: 567
diff changeset
243 retn(code);
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diff changeset
244 return start;
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parents: 567
diff changeset
245 }