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Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
author Michael Pavone <pavone@retrodev.com>
date Wed, 14 Dec 2016 23:26:12 -0800
parents fc125af5e4f1
children fe8c79f82c22
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>
parents:
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>
parents:
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>
parents:
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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
5 {
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
6 if (opts->limit < 0) {
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
7 sub_ir(&opts->code, num*opts->clock_divider, opts->cycles, SZ_D);
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
8 } else {
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
9 add_ir(&opts->code, num*opts->clock_divider, opts->cycles, SZ_D);
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
10 }
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
11 }
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
12
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
13 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:
diff changeset
14 {
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
15 code_info *code = &opts->code;
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
16 uint8_t cc;
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
17 if (opts->limit < 0) {
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
18 cmp_ir(code, 1, opts->cycles, SZ_D);
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
19 cc = CC_NS;
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
20 } else {
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
21 cmp_rr(code, opts->cycles, opts->limit, SZ_D);
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
22 cc = CC_A;
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6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
23 }
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
24 code_ptr jmp_off = code->cur+1;
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
25 jcc(code, cc, jmp_off+1);
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
26 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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
27 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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
29 }
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
30
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
31 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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
32 {
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
33 code_info *code = &opts->code;
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
34 uint8_t cc;
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
35 if (opts->limit < 0) {
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
36 cmp_ir(code, 1, opts->cycles, SZ_D);
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
37 cc = CC_NS;
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
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parents: 987
diff changeset
38 } else {
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
39 cmp_rr(code, opts->cycles, opts->limit, SZ_D);
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
40 cc = CC_A;
1047
6b07af1515b5 Change cycle tracking code for Z80 core to only use a single register. Store low 7 bits of R in a reg and increment it appropriately.
Michael Pavone <pavone@retrodev.com>
parents: 987
diff changeset
41 }
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
42 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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
43 code_ptr jmp_off = code->cur+1;
1109
4bc27caa6e20 Fix a subtle bug in interrupt handling introduced with the move to a single cycle register in the Z80 core. Fixes regression in Puyo Puyo 2
Michael Pavone <pavone@retrodev.com>
parents: 1107
diff changeset
44 jcc(code, cc, jmp_off+1);
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
45 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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
46 *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
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
47 }
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
48
697
7f96bd1cb1be Sync fixes and logging to fix more sync issues
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parents: 692
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49 void log_address(cpu_options *opts, uint32_t address, char * format)
7f96bd1cb1be Sync fixes and logging to fix more sync issues
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parents: 692
diff changeset
50 {
7f96bd1cb1be Sync fixes and logging to fix more sync issues
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parents: 692
diff changeset
51 code_info *code = &opts->code;
7f96bd1cb1be Sync fixes and logging to fix more sync issues
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parents: 692
diff changeset
52 call(code, opts->save_context);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
53 push_r(code, opts->context_reg);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
54 mov_rr(code, opts->cycles, RDX, SZ_D);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
55 mov_ir(code, (int64_t)format, RDI, SZ_PTR);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
56 mov_ir(code, address, RSI, SZ_D);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
57 call_args_abi(code, (code_ptr)printf, 3, RDI, RSI, RDX);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
58 pop_r(code, opts->context_reg);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
59 call(code, opts->load_context);
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
60 }
7f96bd1cb1be Sync fixes and logging to fix more sync issues
Michael Pavone <pavone@retrodev.com>
parents: 692
diff changeset
61
601
f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
Michael Pavone <pavone@retrodev.com>
parents: 595
diff changeset
62 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
Michael Pavone <pavone@retrodev.com>
parents: 595
diff changeset
63 {
f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
Michael Pavone <pavone@retrodev.com>
parents: 595
diff changeset
64 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
Michael Pavone <pavone@retrodev.com>
parents: 595
diff changeset
65 }
f0061e3d2ad9 Fix a few bugs introduced in the Z80 core from the adjustments to fit with the code gen refactor
Michael Pavone <pavone@retrodev.com>
parents: 595
diff changeset
66
593
5ef3fe516da9 Z80 core is sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 590
diff changeset
67 code_ptr gen_mem_fun(cpu_options * opts, memmap_chunk const * memmap, uint32_t num_chunks, ftype fun_type, code_ptr *after_inc)
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
68 {
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
69 code_info *code = &opts->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
70 code_ptr start = code->cur;
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
71 check_cycles(opts);
987
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
72 uint8_t is_write = fun_type == WRITE_16 || fun_type == WRITE_8;
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
73 uint8_t adr_reg = is_write ? opts->scratch2 : opts->scratch1;
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
74 uint8_t size = (fun_type == READ_16 || fun_type == WRITE_16) ? SZ_W : SZ_B;
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
75 if (size != SZ_B && opts->align_error_mask) {
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
76 test_ir(code, opts->align_error_mask, adr_reg, SZ_D);
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
77 jcc(code, CC_NZ, is_write ? opts->handle_align_error_write : opts->handle_align_error_read);
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
78 }
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
79 cycles(opts, opts->bus_cycles);
590
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 589
diff changeset
80 if (after_inc) {
ea80559c67cb WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents: 589
diff changeset
81 *after_inc = code->cur;
ea80559c67cb WIP effort to update z80 core for code gen changes
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parents: 589
diff changeset
82 }
987
1f09994e92c5 Initial stab at implementing address error exceptions. Need to fill in the value of IR, undefined bits of last stack frame word and properly deal with address errors that occur during exception processing.
Michael Pavone <pavone@retrodev.com>
parents: 894
diff changeset
83
750
59b499f6b24f Fix handling of address mask in gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 697
diff changeset
84 if (opts->address_size == SZ_D && opts->address_mask != 0xFFFFFFFF) {
59b499f6b24f Fix handling of address mask in gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 697
diff changeset
85 and_ir(code, opts->address_mask, adr_reg, SZ_D);
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
86 }
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
87 code_ptr lb_jcc = NULL, ub_jcc = 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
88 uint16_t access_flag = is_write ? MMAP_WRITE : MMAP_READ;
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
89 uint32_t ram_flags_off = opts->ram_flags_off;
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
90 uint32_t min_address = 0;
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
91 uint32_t max_address = opts->max_address;
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
92 for (uint32_t chunk = 0; chunk < num_chunks; chunk++)
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 {
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
94 if (memmap[chunk].start > min_address) {
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
95 cmp_ir(code, memmap[chunk].start, 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
96 lb_jcc = 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
97 jcc(code, CC_C, code->cur + 2);
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
98 } else {
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
99 min_address = memmap[chunk].end;
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
100 }
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
101 if (memmap[chunk].end < max_address) {
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 cmp_ir(code, memmap[chunk].end, 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
103 ub_jcc = 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
104 jcc(code, CC_NC, code->cur + 2);
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
105 } else {
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
106 max_address = memmap[chunk].start;
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
107 }
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
108
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
109 if (memmap[chunk].mask != opts->address_mask) {
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
110 and_ir(code, memmap[chunk].mask, 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
111 }
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 void * cfun;
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 switch (fun_type)
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 {
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 case READ_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
116 cfun = memmap[chunk].read_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
117 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
118 case READ_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
119 cfun = memmap[chunk].read_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
120 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
121 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
122 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
123 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
124 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
125 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
126 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
127 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
128 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
129 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
130 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
131 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
132 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
133 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
134 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
135 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
136 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
137 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
138 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
139 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
140 } 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
141 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
142 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
143 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
144 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
145 }
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 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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parents: 567
diff changeset
147
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 *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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parents: 567
diff changeset
149 }
604
39d7d463ed5b Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents: 601
diff changeset
150 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
151 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
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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
153 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
154 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
155 }
1081
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
156 if (is_write && (memmap[chunk].flags & MMAP_CODE)) {
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
157 push_r(code, adr_reg);
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
158 }
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
159 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
160 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
161 mov_rrind(code, opts->scratch1, opts->scratch2, size);
1081
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
162 if (memmap[chunk].flags & MMAP_CODE) {
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
163 pop_r(code, adr_reg);
89cc20cf1ad3 Fix handling of MMAP_CODE chunks that also have MMAP_PTR_IDX set
Michael Pavone <pavone@retrodev.com>
parents: 1047
diff changeset
164 }
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
165 } 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
166 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
167 }
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
168 } 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
169 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
170 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
171 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
172 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
173 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
174 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
175 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
176 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
177 }
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
178 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
179 *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
180 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
181 } 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
182 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
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 } 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
185 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
186 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
187 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
188 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
189 }
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
190 }
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
191 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
192 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
193 }
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
194 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
195 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
196 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
197 } 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
198 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
199 }
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
200 } 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
201 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
202 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
203 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
204 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
205 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
206 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
207 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
208 } 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
209 add_ir(code, sizeof(void*), RSP, SZ_D);
894
a7774fc2de4b Partially working change to do proper stack alignment rather than doing a lame alignment check when calling a C compile dfunction. 68K core seems okay, but Z80 is busted.
Michael Pavone <pavone@retrodev.com>
parents: 892
diff changeset
210 code->stack_off -= sizeof(void *);
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
211 }
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
212 } 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
213 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
214 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
215 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
216 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
217 }
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
218 }
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
219 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
220 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
221 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
222 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
223 } 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
224 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
225 }
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
226 }
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
227 }
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
228 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
229 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
230 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
231 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
232 if (memmap[chunk].mask == opts->address_mask) {
892
381a3b2f6065 Fix a bug in generating memory access functions when more than one MMAP_CODE region exists
Michael Pavone <pavone@retrodev.com>
parents: 760
diff changeset
233 ram_flags_off += (memmap[chunk].end - memmap[chunk].start) / (1 << opts->ram_flags_shift) / 8; ;
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
234 } else {
892
381a3b2f6065 Fix a bug in generating memory access functions when more than one MMAP_CODE region exists
Michael Pavone <pavone@retrodev.com>
parents: 760
diff changeset
235 ram_flags_off += (memmap[chunk].mask + 1) / (1 << opts->ram_flags_shift) / 8;;
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
236 }
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
237 code_ptr not_code = 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
238 jcc(code, CC_NC, code->cur + 2);
1084
193db42e702b Remove hacky assumption about Genesis memory map in M68K core
Michael Pavone <pavone@retrodev.com>
parents: 1081
diff changeset
239 if (memmap[chunk].mask != opts->address_mask) {
1107
fc125af5e4f1 Fix to the fix of handling of self modifying code. Was ORing the base address with the wrong register before calling the modified code handler
Michael Pavone <pavone@retrodev.com>
parents: 1086
diff changeset
240 or_ir(code, memmap[chunk].start, opts->scratch2, opts->address_size);
1084
193db42e702b Remove hacky assumption about Genesis memory map in M68K core
Michael Pavone <pavone@retrodev.com>
parents: 1081
diff changeset
241 }
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
242 call(code, opts->save_context);
658
6aa29ac33f1a Use call_args and call_args_abi inside gen_mem_fun
Michael Pavone <pavone@retrodev.com>
parents: 620
diff changeset
243 call_args(code, opts->handle_code_write, 2, opts->scratch2, 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
244 mov_rr(code, RAX, opts->context_reg, SZ_PTR);
1086
f0a1e0a2263c Made some optimizations to gen_mem_fun to keep the size of chunk handler sections within range of a single byte displacement
Michael Pavone <pavone@retrodev.com>
parents: 1084
diff changeset
245 jmp(code, opts->load_context);
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
246 *not_code = code->cur - (not_code+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
247 }
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
248 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
249 } else if (cfun) {
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
250 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
251 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
252 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
253 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
254 } 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
255 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
256 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
257 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
258 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
259 }
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
260 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
261 } 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
262 //Not sure the best course of action here
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
263 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
264 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
265 }
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
266 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
267 }
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
268 if (lb_jcc) {
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
269 *lb_jcc = code->cur - (lb_jcc+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
270 lb_jcc = 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
271 }
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
272 if (ub_jcc) {
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
273 *ub_jcc = code->cur - (ub_jcc+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
274 ub_jcc = 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
275 }
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
276 }
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
277 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
278 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
Michael Pavone <pavone@retrodev.com>
parents: 567
diff changeset
279 }
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
280 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
281 return start;
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
282 }