repos/blastem: zruntime.S annotate

annotate zruntime.S @ 478:2e4a4188cfb0

Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.

author	Mike Pavone <pavone@retrodev.com>
date	Tue, 17 Sep 2013 00:11:45 -0700
parents	b7c3b2d22858
children	cc6030bd04c6

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

Mercurial > repos > blastem

annotate zruntime.S @ 478:2e4a4188cfb0