Mercurial > repos > blastem

annotate zruntime.S @ 451:b7c3b2d22858

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added support for saving savestates. Added gst savestate format test harness
author Mike Pavone <pavone@retrodev.com>
date Fri, 26 Jul 2013 19:55:04 -0700
parents 30c250a41629
children cc6030bd04c6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
284
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
1 z_inccycles_io:
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
2 cmp %edi, %ebp
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
3 jnb do_limit
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
4 no_sync_io:
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
5 add $4, %ebp
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
6 ret
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
7 do_limit_io:
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
8 cmp 112(%rsi), %ebp
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
9 jb no_sync_io
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
10 jmp sync_io
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
11
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
12 z_inccycles:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
13 cmp %edi, %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
14 jnb do_limit
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
15 no_sync:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
16 add $3, %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
17 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
18 do_limit:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
19 cmp 112(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
20 jb no_sync
284
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
21 sync_io:
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
22 movw $0, 164(%rsi)
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
23 call z80_save_context_scratch
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
24 pop %rax /*return address in read/write func*/
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
25 pop 104(%rsi) /*return address in native code*/
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
26 sub $5, %rax /* adjust return addres to point to the call instruction that got us here */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
27 mov %rax, (%rsi)
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
28
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
29 pop %r15 /* restore callee saved regsiters */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
30 pop %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
31 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
32 pop %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
33 pop %rbp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
34 pop %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
35 ret /* return to caller of z80_run */
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
36
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
37 .global z80_handle_cycle_limit_int
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
38 z80_handle_cycle_limit_int:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
39 cmp 116(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
40 jb zskip_int
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
41 mov 112(%rsi), %ebp /* set cycle limit to sync cycle */
375
134ffb72d7a1 Clear IFF1 and IFF2 when an interrupt is taken on the Z80
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
42 /* not sure this is really necessary now that IFF1 and IFF2 are geting cleared */
335
14a937097c2b Some Z80 interrupt fixes
Mike Pavone <pavone@retrodev.com>
parents: 290
diff changeset
43 movl $0xFFFFFFFF, 116(%rsi) /* make sure the interrupt doesn't fire more than once */
375
134ffb72d7a1 Clear IFF1 and IFF2 when an interrupt is taken on the Z80
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
44 /* disable interrupts */
134ffb72d7a1 Clear IFF1 and IFF2 when an interrupt is taken on the Z80
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
45 movb $0, 96(%rsi)
134ffb72d7a1 Clear IFF1 and IFF2 when an interrupt is taken on the Z80
Mike Pavone <pavone@retrodev.com>
parents: 357
diff changeset
46 movb $0, 97(%rsi)
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
47 add $7, %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
48 sub $2, %r9w
259
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
49 mov %r9w, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
50 call z_inccycles
259
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
51 push %r13
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
52 call z80_write_byte_noinc
259
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
53 pop %r13
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
54 mov %r9w, %r14w
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
55 add $1, %r14w
d9417261366f Fix a remaining z80_write reg swap bug. Properly initialize the native map slots. Reset appropriate regs when z80_reset is called.
Mike Pavone <pavone@retrodev.com>
parents: 253
diff changeset
56 shr $8, %r13w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
57 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
58 call z80_write_byte_noinc
276
eec7072189a1 Fix crash bug in Z80 interrupt support
Mike Pavone <pavone@retrodev.com>
parents: 261
diff changeset
59 pop %r14 /*dispose of return address */
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
60 /* TODO: Support interrupt mode 0 and 2 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
61 mov $0x38, %r13w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
62 call z80_native_addr
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
63 jmp *%r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
64 zskip_int:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
65 cmp 112(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
66 jb zskip_sync
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
67 mov %r13w, 164(%rsi)
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
68 .global z80_do_sync
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
69 z80_do_sync:
281
44f0bbf57b4f Save context in z80_do_sync
Mike Pavone <pavone@retrodev.com>
parents: 280
diff changeset
70 call z80_save_context
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
71 pop (%rsi) /*return address in native code*/
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
72 pop %r15 /* restore callee saved regsiters */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
73 pop %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
74 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
75 pop %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
76 pop %rbp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
77 pop %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
78 zskip_sync:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
79 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
80
285
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
81 .global z80_halt
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
82 z80_halt:
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
83 mov %edi, %r14d
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
84 sub %ebp, %r14d
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
85 and $0xFFFFFFFC, %r14d
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
86 add %r14d, %ebp
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
87 cmp %edi, %ebp
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
88 jnb z80_handle_cycle_limit_int
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
89 add $4, %ebp
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
90 jmp z80_handle_cycle_limit_int
021aeb6df19b Implement HALT (sort of tested)
Mike Pavone <pavone@retrodev.com>
parents: 284
diff changeset
91
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
92 .global z80_read_byte
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
93 z80_read_byte:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
94 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
95 z80_read_byte_noinc:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
96 cmp $0x4000, %r13w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
97 jb z80_read_ram
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
98 cmp $0x8000, %r13w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
99 jae z80_read_bank
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
100 cmp $0x6000, %r13w
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
101 jb z80_read_ym2612
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
102 /* TODO: Bank reg, YM-2612, PSG/VDP */
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
103 mov $0xFF, %r13b
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
104 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
105 z80_read_ram:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
106 and $0x1FFF, %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
107 mov (%r11, %r13), %r13b
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
108 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
109 z80_read_bank:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
110 and $0x7FFF, %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
111 cmp $0, %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
112 je slow_bank_read
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
113 /* 68K memory is byte swapped */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
114 xor $1, %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
115 mov (%r12, %r13), %r13b
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
116 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
117 slow_bank_read:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
118 /* TODO: Call into C to implement this */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
119 ret
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
120 z80_read_ym2612:
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
121 call z80_save_context
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
122 mov %r13w, %di
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
123 push %rsi
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
124 call z80_read_ym
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
125 pop %rsi
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
126 mov %al, %r13b
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
127 call z80_load_context
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
128 ret
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
129
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
130 .global z80_write_byte
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
131 z80_write_byte:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
132 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
133 z80_write_byte_noinc:
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
134 cmp $0x4000, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 jb z80_write_ram
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
136 cmp $0x8000, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
137 jae z80_write_bank
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
138 cmp $0x6000, %r14w
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
139 jb z80_write_ym2612
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
140 cmp $0x6100, %r14w
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
141 jb z80_write_bank_reg
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
142 cmp $0x7F00, %r14w
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
143 jae z80_write_vdp
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
144 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 z80_write_ram:
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
146 and $0x1FFF, %r14
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
147 mov %r13b, (%r11, %r14)
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
148 mov %r14d, %r13d
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
149 shr $7, %r13d
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
150 bt %r13d, 152(%rsi)
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
151 jnc not_code
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
152 call z80_save_context
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
153 mov %r14d, %edi
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
154 call z80_handle_code_write
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
155 mov %rax, %rsi
261
f0c53a4bbfa3 Implement LDIR and fix a bug in which context was not restored after a call to z80_handle_code_write
Mike Pavone <pavone@retrodev.com>
parents: 259
diff changeset
156 call z80_load_context
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
157 not_code:
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
158 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159 z80_write_bank:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
160 slow_bank_write:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
161 /* TODO: Call into C to implement this */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
162 ret
290
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
163 z80_write_ym2612:
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
164 and $0x3, %r14w
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
165 call z80_save_context
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
166 mov %r14w, %di
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
167 mov %r13b, %dl
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
168 call z80_write_ym
171f97e70d85 Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents: 285
diff changeset
169 mov %rax, %rsi
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
170 jmp z80_load_context
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
171 z80_write_bank_reg:
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
172 and $1, %r13w
280
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
173 shr %r15w
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
174 shl $8, %r13w
9ee64039ddeb Fix bank register update
Mike Pavone <pavone@retrodev.com>
parents: 279
diff changeset
175 xor %r12, %r12
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
176 or %r13w, %r15w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
177 and $0x1FF, %r15w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
178 cmp $0x80, %r15w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
179 jb update_bank_ptr
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
180 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
181 update_bank_ptr:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
182 mov %r15w, %r12w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
183 shl $15, %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
184 add 80(%rsi), %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
185 ret
357
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
186 z80_write_vdp:
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
187 and $0xFF, %r14w
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
188 call z80_save_context
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
189 mov %r14w, %di
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
190 mov %r13b, %dl
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
191 call z80_vdp_port_write
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
192 mov %rax, %rsi
fa7ea48be9a9 Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents: 335
diff changeset
193 jmp z80_load_context
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
194
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
195 .global z80_read_word
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
196 z80_read_word:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
197 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
198 push %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
199 call z80_read_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
200 mov %r13b, %r14b
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
201 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
202 inc %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
203 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
204 call z80_read_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
205 shl $8, %r13w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
206 mov %r14b, %r13b
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
207 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
208
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
209 .global z80_write_word_highfirst
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
210 z80_write_word_highfirst:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
211 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
212 push %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
213 push %r13
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
214 add $1, %r14w
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
215 shr $8, %r13w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
216 call z80_write_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
217 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
218 pop %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
219 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
220 call z80_write_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
221 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
223 .global z80_write_word_lowfirst
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
224 z80_write_word_lowfirst:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
225 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
226 push %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
227 push %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
228 call z80_write_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
229 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
230 pop %r14
253
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
231 add $1, %r14w
3b34deba4ca0 Squashing some bugs introduced when I switched the register assignments for z80_write_byte around.
Mike Pavone <pavone@retrodev.com>
parents: 252
diff changeset
232 shr $8, %r13w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
233 call z_inccycles
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
234 call z80_write_byte_noinc
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
235 ret
284
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
236
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
237 .global z80_io_read
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
238 z80_io_read:
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
239 call z_inccycles_io
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
240 /* genesis Z80 has no IO port hardware and always returns FF */
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
241 mov $0xFF, %r13
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
242 ret
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
243
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
244 .global z80_io_write
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
245 z80_io_write:
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
246 call z_inccycles_io
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
247 /* genesis Z80 has no IO port hardware and writes have no effect */
ed7098f717d7 Implement IN and OUT (untested)
Mike Pavone <pavone@retrodev.com>
parents: 281
diff changeset
248 ret
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
249
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
250 .global z80_retrans_stub
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
251 z80_retrans_stub:
390
561fe3ea3fc8 Use a call instruction to figure out the original native address when retranslating so that it does not get lost when the byte transforms from a instruction word to extension word
Mike Pavone <pavone@retrodev.com>
parents: 375
diff changeset
252 pop %r14
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
253 call z80_save_context
390
561fe3ea3fc8 Use a call instruction to figure out the original native address when retranslating so that it does not get lost when the byte transforms from a instruction word to extension word
Mike Pavone <pavone@retrodev.com>
parents: 375
diff changeset
254 /* adjust for mov and call instructions */
393
30c250a41629 Fix address adjustement in z80_retrans_stub
Mike Pavone <pavone@retrodev.com>
parents: 390
diff changeset
255 sub $11, %r14
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
256 mov %r13d, %edi
390
561fe3ea3fc8 Use a call instruction to figure out the original native address when retranslating so that it does not get lost when the byte transforms from a instruction word to extension word
Mike Pavone <pavone@retrodev.com>
parents: 375
diff changeset
257 mov %r14, %rdx
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
258 push %rsi
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
259 call z80_retranslate_inst
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
260 pop %rsi
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
261 mov %rax, %r13
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
262 call z80_load_context
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
Mike Pavone <pavone@retrodev.com>
parents: 249
diff changeset
263 jmp *%r13
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
264
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
265 .global z80_native_addr
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
266 z80_native_addr:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
267 call z80_save_context
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
268 push %rsi
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
269 mov %rsi, %rdi
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
270 movzx %r13w, %esi
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
271 call z80_get_native_address_trans
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
272 mov %rax, %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
273 pop %rsi
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
274 call z80_load_context
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
275 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
276
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
277 z80_save_context_scratch:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
278 mov %r13w, 98(%rsi) /* scratch1 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
279 mov %r14w, 100(%rsi) /* scratch2 */
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
280
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
281 .global z80_save_context
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
282 z80_save_context:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
283 mov %r9w, 8(%rsi) /* SP */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
284 mov %r15w, 16(%rsi) /* bank register */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
285 mov %bx, 18(%rsi) /* BC */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
286 mov %cx, 20(%rsi) /* DE */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
287 mov %ax, 22(%rsi) /* HL */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
288 mov %dx, 24(%rsi) /* IX */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
289 mov %r8w, 26(%rsi) /* IY */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
290 mov %r10b, 30(%rsi) /* A */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
291 mov %edi, 48(%rsi) /* target_cycle */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
292 mov %ebp, 52(%rsi) /* current_cycle */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
293 mov %r12, 72(%rsi) /* cartridge bank pointer */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
294 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
295
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
296
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
297 z80_load_context_scratch:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
298 mov 98(%rsi), %r13w /* scratch1 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
299 mov 100(%rsi), %r14w /* scratch2 */
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
300
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
301 .global z80_load_context
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
302 z80_load_context:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
303 mov 8(%rsi), %r9w /* SP */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
304 mov 16(%rsi), %r15w /* bank register */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
305 mov 18(%rsi), %bx /* BC */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
306 mov 20(%rsi), %cx /* DE */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
307 mov 22(%rsi), %ax /* HL */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
308 mov 24(%rsi), %dx /* IX */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
309 mov 26(%rsi), %r8w /* IY */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
310 mov 30(%rsi), %r10b /* A */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
311 mov 48(%rsi), %edi /* target_cycle */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
312 mov 52(%rsi), %ebp /* current_cycle */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
313 mov 64(%rsi), %r11 /* z80 RAM */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
314 mov 72(%rsi), %r12 /* cartridge bank pointer */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
315 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
316
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
317 .global z80_run
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
318 z80_run:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
319 push %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
320 push %rbp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
321 push %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
322 push %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
323 push %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
324 push %r15
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
325 mov %rdi, %rsi
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
326 call z80_load_context_scratch
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
327 cmpq $0, 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
328 je no_extra
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
329 push 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
330 movq $0, 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
331 no_extra:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
332 jmp *(%rsi)
451
b7c3b2d22858 Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents: 393
diff changeset
333