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annotate zruntime.S @ 262:d97c9eca49f4

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Implement ld to and from the I and R registers
author Mike Pavone <pavone@retrodev.com>
date Tue, 30 Apr 2013 20:33:30 -0700
parents f0c53a4bbfa3
children eec7072189a1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1 z_inccycles:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
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2 cmp %edi, %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
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3 jnb do_limit
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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4 no_sync:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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5 add $3, %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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6 ret
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7 do_limit:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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8 cmp 112(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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9 jb no_sync
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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10 call z80_save_context_scratch
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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11 pop %rax /*return address in read/write func*/
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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12 pop 104(%rsi) /*return address in native code*/
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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13 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.
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14 mov %rax, (%rsi)
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15
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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16 pop %r15 /* restore callee saved regsiters */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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17 pop %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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18 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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19 pop %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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20 pop %rbp
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21 pop %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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22 ret /* return to caller of z80_run */
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23
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24 .global z80_handle_cycle_limit_int
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25 z80_handle_cycle_limit_int:
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26 cmp 116(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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27 jb zskip_int
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28 mov 112(%rsi), %ebp /* set cycle limit to sync cycle */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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29 add $7, %ebp
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30 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
31 mov %r9w, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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32 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.
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33 push %r13
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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34 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.
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35 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.
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36 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.
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parents: 253
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37 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
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38 shr $8, %r13w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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39 call z_inccycles
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40 call z80_write_byte_noinc
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41 /* TODO: Support interrupt mode 0 and 2 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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42 mov $0x38, %r13w
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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43 call z80_native_addr
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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44 jmp *%r13
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45 zskip_int:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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46 cmp 112(%rsi), %ebp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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47 jb zskip_sync
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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48 call z80_save_context
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49 .global z80_do_sync
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50 z80_do_sync:
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51 pop (%rsi) /*return address in native code*/
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52 pop %r15 /* restore callee saved regsiters */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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53 pop %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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54 pop %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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55 pop %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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56 pop %rbp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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57 pop %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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58 zskip_sync:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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59 ret
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60
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61 .global z80_read_byte
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62 z80_read_byte:
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63 call z_inccycles
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64 z80_read_byte_noinc:
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65 cmp $0x4000, %r13w
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66 jb z80_read_ram
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67 cmp $0x8000, %r13w
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68 jae z80_read_bank
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69 /* TODO: Bank reg, YM-2612, PSG/VDP */
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70 ret
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71 z80_read_ram:
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72 and $0x1FFF, %r13
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73 mov (%r11, %r13), %r13b
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74 ret
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75 z80_read_bank:
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76 and $0x7FFF, %r13
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77 cmp $0, %r12
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78 je slow_bank_read
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79 /* 68K memory is byte swapped */
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80 xor $1, %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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81 mov (%r12, %r13), %r13b
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82 ret
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83 slow_bank_read:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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84 /* TODO: Call into C to implement this */
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85 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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86
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87 .global z80_write_byte
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88 z80_write_byte:
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89 call z_inccycles
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90 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
91 cmp $0x4000, %r14w
249
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92 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
93 cmp $0x8000, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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94 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
95 cmp $0x6000, %r14w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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96 je z80_write_bank_reg
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97 /* TODO: YM-2612, PSG/VDP */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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98 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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99 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
100 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
101 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
102 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
103 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
104 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
105 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
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106 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
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107 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
108 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
109 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
110 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
111 not_code:
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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112 ret
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Mike Pavone <pavone@retrodev.com>
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113 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
114 and $0x7FFF, %r14
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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115 cmp $0, %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
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116 je slow_bank_write
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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117 /* 68K memory is byte swapped */
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
118 xor $1, %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
119 mov %r13b, (%r12, %r14)
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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120 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
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121 slow_bank_write:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
122 /* TODO: Call into C to implement this */
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123 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
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124 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
125 and $1, %r13w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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parents:
diff changeset
126 shl %r15w
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
127 or %r13w, %r15w
249
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
128 and $0x1FF, %r15w
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
129 xor %r12, %r12
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
130 cmp $0x80, %r15w
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
131 jb update_bank_ptr
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
132 ret
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
133 update_bank_ptr:
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
134 mov %r15w, %r12w
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 shl $15, %r12
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
136 add 80(%rsi), %r12
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
137 ret
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parents:
diff changeset
138
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parents:
diff changeset
139 .global z80_read_word
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parents:
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140 z80_read_word:
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parents:
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141 call z_inccycles
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parents:
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142 push %r13
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parents:
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143 call z80_read_byte_noinc
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parents:
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144 mov %r13b, %r14b
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 pop %r13
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 inc %r13
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147 call z_inccycles
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Mike Pavone <pavone@retrodev.com>
parents:
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148 call z80_read_byte_noinc
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Mike Pavone <pavone@retrodev.com>
parents:
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149 shl $8, %r13w
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
150 mov %r14b, %r13b
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
151 ret
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parents:
diff changeset
152
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parents:
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153 .global z80_write_word_highfirst
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parents:
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154 z80_write_word_highfirst:
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Mike Pavone <pavone@retrodev.com>
parents:
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155 call z_inccycles
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parents:
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156 push %r14
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parents:
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157 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
158 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
159 shr $8, %r13w
249
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parents:
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160 call z80_write_byte_noinc
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parents:
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161 pop %r13
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Mike Pavone <pavone@retrodev.com>
parents:
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162 pop %r14
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Mike Pavone <pavone@retrodev.com>
parents:
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163 call z_inccycles
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Mike Pavone <pavone@retrodev.com>
parents:
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164 call z80_write_byte_noinc
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Mike Pavone <pavone@retrodev.com>
parents:
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165 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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parents:
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166
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parents:
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167 .global z80_write_word_lowfirst
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parents:
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168 z80_write_word_lowfirst:
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Mike Pavone <pavone@retrodev.com>
parents:
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169 call z_inccycles
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parents:
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170 push %r14
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parents:
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171 push %r13
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Mike Pavone <pavone@retrodev.com>
parents:
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172 call z80_write_byte_noinc
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Mike Pavone <pavone@retrodev.com>
parents:
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173 pop %r13
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Mike Pavone <pavone@retrodev.com>
parents:
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174 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
175 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
176 shr $8, %r13w
249
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parents:
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177 call z_inccycles
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parents:
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178 call z80_write_byte_noinc
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parents:
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179 ret
252
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
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parents: 249
diff changeset
180
63b9a500a00b Implement retranslating code when written to. Possibly broken, need to fix some other bugs before a proper test.
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parents: 249
diff changeset
181 .global z80_retrans_stub
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parents: 249
diff changeset
182 z80_retrans_stub:
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parents: 249
diff changeset
183 call z80_save_context
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parents: 249
diff changeset
184 mov %r13d, %edi
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parents: 249
diff changeset
185 push %rsi
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parents: 249
diff changeset
186 call z80_retranslate_inst
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parents: 249
diff changeset
187 pop %rsi
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parents: 249
diff changeset
188 mov %rax, %r13
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parents: 249
diff changeset
189 call z80_load_context
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parents: 249
diff changeset
190 jmp *%r13
249
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parents:
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191
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parents:
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192 .global z80_native_addr
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parents:
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193 z80_native_addr:
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parents:
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194 call z80_save_context
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parents:
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195 push %rsi
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parents:
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196 mov %rsi, %rdi
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Mike Pavone <pavone@retrodev.com>
parents:
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197 movzx %r13w, %esi
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parents:
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198 call z80_get_native_address_trans
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Mike Pavone <pavone@retrodev.com>
parents:
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199 mov %rax, %r13
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Mike Pavone <pavone@retrodev.com>
parents:
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200 pop %rsi
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
201 call z80_load_context
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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parents:
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202 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
203
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
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204 z80_save_context_scratch:
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
205 mov %r13w, 98(%rsi) /* scratch1 */
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
206 mov %r14w, 100(%rsi) /* scratch2 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
207
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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parents:
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208 .global z80_save_context
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parents:
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209 z80_save_context:
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Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
210 mov %r9w, 8(%rsi) /* SP */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
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parents:
diff changeset
211 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
212 mov %bx, 18(%rsi) /* BC */
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parents:
diff changeset
213 mov %cx, 20(%rsi) /* DE */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
214 mov %ax, 22(%rsi) /* HL */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
215 mov %dx, 24(%rsi) /* IX */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
216 mov %r8w, 26(%rsi) /* IY */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
217 mov %r10b, 30(%rsi) /* A */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
218 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
219 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
220 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
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
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
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224 z80_load_context_scratch:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
225 mov 98(%rsi), %r13w /* scratch1 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
226 mov 100(%rsi), %r14w /* scratch2 */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
227
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
228 .global z80_load_context
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Mike Pavone <pavone@retrodev.com>
parents:
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229 z80_load_context:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
230 mov 8(%rsi), %r9w /* SP */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
231 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
232 mov 18(%rsi), %bx /* BC */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
233 mov 20(%rsi), %cx /* DE */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
234 mov 22(%rsi), %ax /* HL */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
235 mov 24(%rsi), %dx /* IX */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
236 mov 26(%rsi), %r8w /* IY */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
237 mov 30(%rsi), %r10b /* A */
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
238 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
239 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
240 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
241 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
242 ret
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
243
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
244 .global z80_run
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Mike Pavone <pavone@retrodev.com>
parents:
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245 z80_run:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
246 push %rbx
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 push %rbp
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 push %r12
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
249 push %r13
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
250 push %r14
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
251 push %r15
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
252 mov %rdi, %rsi
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
253 call z80_load_context_scratch
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
254 cmpq $0, 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
255 je no_extra
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
256 push 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
257 movq $0, 104(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
258 no_extra:
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
259 jmp *(%rsi)
d94e6cd5a8a5 Forgot to commit zruntime a while back, adding it now.
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
260