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annotate runtime_32.S @ 555:5af986d2b9da

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Start work on refactoring some of the backend code to allow more sharing between M68K and Z80 cores and possibly also between x86 and the ARM backend when it exists
author Michael Pavone <pavone@retrodev.com>
date Mon, 24 Feb 2014 00:39:02 -0800
parents 96489fb27dbf
children 5a6ff0d76032
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96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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1
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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2
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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3 invalid_msg:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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4 .asciz "Invalid instruction at %X\n"
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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5
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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6 .global m68k_invalid
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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7 m68k_invalid:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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8 push %ecx
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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9 push invalid_msg
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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10 xor %eax, %eax
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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11 call printf
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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12 push $1
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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13 call exit
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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14
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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15 .global bcd_add
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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16 bcd_add:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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17 xchg %eax, %edi
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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18
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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19 mov %cl, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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20 mov %al, %ah
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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21 and $0xF, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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22 and $0xF, %ah
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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23 and $0xF0, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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24 and $0xF0, %al
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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25 add %ah, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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26 cmp $10, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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27 jb no_adjust
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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28 add $6, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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29 no_adjust:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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30 add %ch, %al
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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31 add %al, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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32 mov $0, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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33 jc def_adjust
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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34 cmp $0xA0, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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35 jb no_adjust_h
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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36 def_adjust:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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37 add $0x60, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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38 mov $1, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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39 no_adjust_h:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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40
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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41 mov %edi, %eax
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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42 ret
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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43
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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44 .global bcd_sub
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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45 bcd_sub:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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46 xchg %eax, %edi
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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47
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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48 mov %cl, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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49 mov %al, %ah
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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50 and $0xF, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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51 and $0xF, %ah
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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52 and $0xF0, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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diff changeset
53 and $0xF0, %al
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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54 sub %ah, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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55 cmp $10, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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56 jb no_adjusts
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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57 sub $6, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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58 no_adjusts:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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59 add %ch, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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60 sub %al, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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61 mov $0, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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62 jc def_adjusts
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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63 cmp $0xA0, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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64 jb no_adjust_hs
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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65 def_adjusts:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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66 sub $0x60, %cl
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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67 mov $1, %ch
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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68 no_adjust_hs:
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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69
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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70 mov %edi, %eax
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
Michael Pavone <pavone@retrodev.com>
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71 ret
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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72
96489fb27dbf Apart from the Z80 core, BlastEm now supports 32-bit x86
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73
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74