1 | include "ASM/ASM.ma". |
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2 | include "ASM/Arithmetic.ma". |
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3 | include "ASM/Fetch.ma". |
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4 | include "ASM/Status.ma". |
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5 | include alias "basics/logic.ma". |
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6 | include alias "arithmetics/nat.ma". |
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7 | include "utilities/extralib.ma". |
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8 | |
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9 | (**************************************** START OF POLICY ABSTRACTION ********************) |
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10 | |
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11 | (* definition of & operations on jump length *) |
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12 | inductive jump_length: Type[0] ≝ |
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13 | | short_jump: jump_length |
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14 | | absolute_jump: jump_length |
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15 | | long_jump: jump_length. |
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16 | |
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17 | (* Functions that define the conditions under which jumps are possible *) |
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18 | definition short_jump_cond: Word → Word → (*pseudo_instruction →*) |
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19 | bool × (BitVector 8) ≝ |
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20 | λpc_plus_jmp_length.λaddr.(*λinstr.*) |
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21 | let 〈result, flags〉 ≝ sub_16_with_carry addr pc_plus_jmp_length false in |
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22 | let 〈upper, lower〉 ≝ vsplit ? 9 7 result in |
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23 | if get_index' ? 2 0 flags then |
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24 | 〈eq_bv 9 upper [[true;true;true;true;true;true;true;true;true]], true:::lower〉 |
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25 | else |
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26 | 〈eq_bv 9 upper (zero …), false:::lower〉. |
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27 | |
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28 | definition absolute_jump_cond: Word → Word → (*pseudo_instruction →*) |
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29 | bool × (BitVector 11) ≝ |
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30 | λpc_plus_jmp_length.λaddr.(*λinstr.*) |
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31 | let 〈fst_5_addr, rest_addr〉 ≝ vsplit bool 5 11 addr in |
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32 | let 〈fst_5_pc, rest_pc〉 ≝ vsplit bool 5 11 pc_plus_jmp_length in |
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33 | 〈eq_bv 5 fst_5_addr fst_5_pc, rest_addr〉. |
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34 | |
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35 | definition assembly_preinstruction ≝ |
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36 | λA: Type[0]. |
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37 | λaddr_of: A → Byte. (* relative *) |
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38 | λpre: preinstruction A. |
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39 | match pre with |
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40 | [ ADD addr1 addr2 ⇒ |
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41 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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42 | [ REGISTER r ⇒ λ_.[ ([[false;false;true;false;true]]) @@ r ] |
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43 | | DIRECT b1 ⇒ λ_.[ ([[false;false;true;false;false;true;false;true]]); b1 ] |
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44 | | INDIRECT i1 ⇒ λ_. [ ([[false;false;true;false;false;true;true;i1]]) ] |
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45 | | DATA b1 ⇒ λ_. [ ([[false;false;true;false;false;true;false;false]]) ; b1 ] |
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46 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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47 | | ADDC addr1 addr2 ⇒ |
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48 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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49 | [ REGISTER r ⇒ λ_.[ ([[false;false;true;true;true]]) @@ r ] |
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50 | | DIRECT b1 ⇒ λ_.[ ([[false;false;true;true;false;true;false;true]]); b1 ] |
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51 | | INDIRECT i1 ⇒ λ_. [ ([[false;false;true;true;false;true;true;i1]]) ] |
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52 | | DATA b1 ⇒ λ_. [ ([[false;false;true;true;false;true;false;false]]) ; b1 ] |
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53 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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54 | | ANL addrs ⇒ |
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55 | match addrs with |
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56 | [ inl addrs ⇒ match addrs with |
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57 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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58 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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59 | [ REGISTER r ⇒ λ_.[ ([[false;true;false;true;true]]) @@ r ] |
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60 | | DIRECT b1 ⇒ λ_.[ ([[false;true;false;true;false;true;false;true]]); b1 ] |
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61 | | INDIRECT i1 ⇒ λ_. [ ([[false;true;false;true;false;true;true;i1]]) ] |
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62 | | DATA b1 ⇒ λ_. [ ([[false;true;false;true;false;true;false;false]]) ; b1 ] |
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63 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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64 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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65 | let b1 ≝ |
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66 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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67 | [ DIRECT b1 ⇒ λ_.b1 |
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68 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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69 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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70 | [ ACC_A ⇒ λ_.[ ([[false;true;false;true;false;false;true;false]]) ; b1 ] |
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71 | | DATA b2 ⇒ λ_. [ ([[false;true;false;true;false;false;true;true]]) ; b1 ; b2 ] |
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72 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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73 | ] |
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74 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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75 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr;n_bit_addr]] x) → ? with |
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76 | [ BIT_ADDR b1 ⇒ λ_.[ ([[true;false;false;false;false;false;true;false]]) ; b1 ] |
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77 | | N_BIT_ADDR b1 ⇒ λ_. [ ([[true;false;true;true;false;false;false;false]]) ; b1 ] |
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78 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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79 | | CLR addr ⇒ |
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80 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;carry;bit_addr]] x) → ? with |
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81 | [ ACC_A ⇒ λ_. |
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82 | [ ([[true; true; true; false; false; true; false; false]]) ] |
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83 | | CARRY ⇒ λ_. |
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84 | [ ([[true; true; false; false; false; false; true; true]]) ] |
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85 | | BIT_ADDR b1 ⇒ λ_. |
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86 | [ ([[true; true; false; false; false; false; true; false]]) ; b1 ] |
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87 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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88 | | CPL addr ⇒ |
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89 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;carry;bit_addr]] x) → ? with |
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90 | [ ACC_A ⇒ λ_. |
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91 | [ ([[true; true; true; true; false; true; false; false]]) ] |
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92 | | CARRY ⇒ λ_. |
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93 | [ ([[true; false; true; true; false; false; true; true]]) ] |
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94 | | BIT_ADDR b1 ⇒ λ_. |
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95 | [ ([[true; false; true; true; false; false; true; false]]) ; b1 ] |
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96 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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97 | | DA addr ⇒ |
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98 | [ ([[true; true; false; true; false; true; false; false]]) ] |
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99 | | DEC addr ⇒ |
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100 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect]] x) → ? with |
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101 | [ ACC_A ⇒ λ_. |
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102 | [ ([[false; false; false; true; false; true; false; false]]) ] |
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103 | | REGISTER r ⇒ λ_. |
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104 | [ ([[false; false; false; true; true]]) @@ r ] |
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105 | | DIRECT b1 ⇒ λ_. |
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106 | [ ([[false; false; false; true; false; true; false; true]]); b1 ] |
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107 | | INDIRECT i1 ⇒ λ_. |
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108 | [ ([[false; false; false; true; false; true; true; i1]]) ] |
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109 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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110 | | DJNZ addr1 addr2 ⇒ |
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111 | let b2 ≝ addr_of addr2 in |
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112 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;direct]] x) → ? with |
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113 | [ REGISTER r ⇒ λ_. |
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114 | [ ([[true; true; false; true; true]]) @@ r ; b2 ] |
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115 | | DIRECT b1 ⇒ λ_. |
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116 | [ ([[true; true; false; true; false; true; false; true]]); b1; b2 ] |
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117 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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118 | | JC addr ⇒ |
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119 | let b1 ≝ addr_of addr in |
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120 | [ ([[false; true; false; false; false; false; false; false]]); b1 ] |
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121 | | JNC addr ⇒ |
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122 | let b1 ≝ addr_of addr in |
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123 | [ ([[false; true; false; true; false; false; false; false]]); b1 ] |
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124 | | JZ addr ⇒ |
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125 | let b1 ≝ addr_of addr in |
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126 | [ ([[false; true; true; false; false; false; false; false]]); b1 ] |
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127 | | JNZ addr ⇒ |
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128 | let b1 ≝ addr_of addr in |
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129 | [ ([[false; true; true; true; false; false; false; false]]); b1 ] |
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130 | | JB addr1 addr2 ⇒ |
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131 | let b2 ≝ addr_of addr2 in |
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132 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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133 | [ BIT_ADDR b1 ⇒ λ_. |
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134 | [ ([[false; false; true; false; false; false; false; false]]); b1; b2 ] |
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135 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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136 | | JNB addr1 addr2 ⇒ |
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137 | let b2 ≝ addr_of addr2 in |
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138 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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139 | [ BIT_ADDR b1 ⇒ λ_. |
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140 | [ ([[false; false; true; true; false; false; false; false]]); b1; b2 ] |
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141 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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142 | | JBC addr1 addr2 ⇒ |
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143 | let b2 ≝ addr_of addr2 in |
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144 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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145 | [ BIT_ADDR b1 ⇒ λ_. |
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146 | [ ([[false; false; false; true; false; false; false; false]]); b1; b2 ] |
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147 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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148 | | CJNE addrs addr3 ⇒ |
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149 | let b3 ≝ addr_of addr3 in |
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150 | match addrs with |
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151 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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152 | match addr2 return λx. bool_to_Prop (is_in ? [[direct;data]] x) → ? with |
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153 | [ DIRECT b1 ⇒ λ_. |
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154 | [ ([[true; false; true; true; false; true; false; true]]); b1; b3 ] |
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155 | | DATA b1 ⇒ λ_. |
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156 | [ ([[true; false; true; true; false; true; false; false]]); b1; b3 ] |
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157 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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158 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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159 | let b2 ≝ |
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160 | match addr2 return λx. bool_to_Prop (is_in ? [[data]] x) → ? with |
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161 | [ DATA b2 ⇒ λ_. b2 |
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162 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) in |
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163 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;indirect]] x) → list Byte with |
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164 | [ REGISTER r ⇒ λ_. |
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165 | [ ([[true; false; true; true; true]]) @@ r; b2; b3 ] |
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166 | | INDIRECT i1 ⇒ λ_. |
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167 | [ ([[true; false; true; true; false; true; true; i1]]); b2; b3 ] |
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168 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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169 | ] |
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170 | | DIV addr1 addr2 ⇒ |
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171 | [ ([[true;false;false;false;false;true;false;false]]) ] |
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172 | | INC addr ⇒ |
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173 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect;dptr]] x) → ? with |
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174 | [ ACC_A ⇒ λ_. |
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175 | [ ([[false;false;false;false;false;true;false;false]]) ] |
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176 | | REGISTER r ⇒ λ_. |
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177 | [ ([[false;false;false;false;true]]) @@ r ] |
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178 | | DIRECT b1 ⇒ λ_. |
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179 | [ ([[false; false; false; false; false; true; false; true]]); b1 ] |
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180 | | INDIRECT i1 ⇒ λ_. |
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181 | [ ([[false; false; false; false; false; true; true; i1]]) ] |
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182 | | DPTR ⇒ λ_. |
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183 | [ ([[true;false;true;false;false;false;true;true]]) ] |
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184 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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185 | | MOV addrs ⇒ |
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186 | match addrs with |
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187 | [ inl addrs ⇒ |
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188 | match addrs with |
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189 | [ inl addrs ⇒ |
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190 | match addrs with |
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191 | [ inl addrs ⇒ |
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192 | match addrs with |
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193 | [ inl addrs ⇒ |
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194 | match addrs with |
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195 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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196 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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197 | [ REGISTER r ⇒ λ_.[ ([[true;true;true;false;true]]) @@ r ] |
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198 | | DIRECT b1 ⇒ λ_.[ ([[true;true;true;false;false;true;false;true]]); b1 ] |
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199 | | INDIRECT i1 ⇒ λ_. [ ([[true;true;true;false;false;true;true;i1]]) ] |
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200 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;false;true;false;false]]) ; b1 ] |
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201 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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202 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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203 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;indirect]] x) → ? with |
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204 | [ REGISTER r ⇒ λ_. |
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205 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;direct;data]] x) → ? with |
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206 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;true]]) @@ r ] |
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207 | | DIRECT b1 ⇒ λ_.[ ([[true;false;true;false;true]]) @@ r; b1 ] |
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208 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;true]]) @@ r; b1 ] |
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209 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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210 | | INDIRECT i1 ⇒ λ_. |
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211 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;direct;data]] x) → ? with |
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212 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;false;true;true;i1]]) ] |
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213 | | DIRECT b1 ⇒ λ_.[ ([[true;false;true;false;false;true;true;i1]]); b1 ] |
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214 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;false;true;true;i1]]) ; b1 ] |
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215 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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216 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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217 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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218 | let b1 ≝ |
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219 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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220 | [ DIRECT b1 ⇒ λ_. b1 |
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221 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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222 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect;data]] x) → ? with |
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223 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;false;true;false;true]]); b1] |
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224 | | REGISTER r ⇒ λ_.[ ([[true;false;false;false;true]]) @@ r; b1 ] |
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225 | | DIRECT b2 ⇒ λ_.[ ([[true;false;false;false;false;true;false;true]]); b1; b2 ] |
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226 | | INDIRECT i1 ⇒ λ_. [ ([[true;false;false;false;false;true;true;i1]]); b1 ] |
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227 | | DATA b2 ⇒ λ_. [ ([[false;true;true;true;false;true;false;true]]); b1; b2 ] |
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228 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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229 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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230 | match addr2 return λx. bool_to_Prop (is_in ? [[data16]] x) → ? with |
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231 | [ DATA16 w ⇒ λ_. |
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232 | let b1_b2 ≝ vsplit ? 8 8 w in |
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233 | let b1 ≝ \fst b1_b2 in |
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234 | let b2 ≝ \snd b1_b2 in |
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235 | [ ([[true;false;false;true;false;false;false;false]]); b1; b2] |
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236 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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237 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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238 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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239 | [ BIT_ADDR b1 ⇒ λ_. |
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240 | [ ([[true;false;true;false;false;false;true;false]]); b1 ] |
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241 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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242 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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243 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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244 | [ BIT_ADDR b1 ⇒ λ_. |
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245 | [ ([[true;false;false;true;false;false;true;false]]); b1 ] |
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246 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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247 | | MOVX addrs ⇒ |
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248 | match addrs with |
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249 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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250 | match addr2 return λx. bool_to_Prop (is_in ? [[ext_indirect;ext_indirect_dptr]] x) → ? with |
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251 | [ EXT_INDIRECT i1 ⇒ λ_. |
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252 | [ ([[true;true;true;false;false;false;true;i1]]) ] |
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253 | | EXT_INDIRECT_DPTR ⇒ λ_. |
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254 | [ ([[true;true;true;false;false;false;false;false]]) ] |
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255 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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256 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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257 | match addr1 return λx. bool_to_Prop (is_in ? [[ext_indirect;ext_indirect_dptr]] x) → ? with |
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258 | [ EXT_INDIRECT i1 ⇒ λ_. |
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259 | [ ([[true;true;true;true;false;false;true;i1]]) ] |
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260 | | EXT_INDIRECT_DPTR ⇒ λ_. |
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261 | [ ([[true;true;true;true;false;false;false;false]]) ] |
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262 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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263 | | MUL addr1 addr2 ⇒ |
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264 | [ ([[true;false;true;false;false;true;false;false]]) ] |
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265 | | NOP ⇒ |
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266 | [ ([[false;false;false;false;false;false;false;false]]) ] |
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267 | | ORL addrs ⇒ |
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268 | match addrs with |
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269 | [ inl addrs ⇒ |
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270 | match addrs with |
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271 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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272 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;data;direct;indirect]] x) → ? with |
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273 | [ REGISTER r ⇒ λ_.[ ([[false;true;false;false;true]]) @@ r ] |
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274 | | DIRECT b1 ⇒ λ_.[ ([[false;true;false;false;false;true;false;true]]); b1 ] |
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275 | | INDIRECT i1 ⇒ λ_. [ ([[false;true;false;false;false;true;true;i1]]) ] |
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276 | | DATA b1 ⇒ λ_. [ ([[false;true;false;false;false;true;false;false]]) ; b1 ] |
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277 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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278 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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279 | let b1 ≝ |
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280 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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281 | [ DIRECT b1 ⇒ λ_. b1 |
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282 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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283 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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284 | [ ACC_A ⇒ λ_. |
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285 | [ ([[false;true;false;false;false;false;true;false]]); b1 ] |
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286 | | DATA b2 ⇒ λ_. |
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287 | [ ([[false;true;false;false;false;false;true;true]]); b1; b2 ] |
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288 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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289 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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290 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr;n_bit_addr]] x) → ? with |
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291 | [ BIT_ADDR b1 ⇒ λ_. |
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292 | [ ([[false;true;true;true;false;false;true;false]]); b1 ] |
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293 | | N_BIT_ADDR b1 ⇒ λ_. |
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294 | [ ([[true;false;true;false;false;false;false;false]]); b1 ] |
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295 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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296 | | POP addr ⇒ |
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297 | match addr return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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298 | [ DIRECT b1 ⇒ λ_. |
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299 | [ ([[true;true;false;true;false;false;false;false]]) ; b1 ] |
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300 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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301 | | PUSH addr ⇒ |
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302 | match addr return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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303 | [ DIRECT b1 ⇒ λ_. |
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304 | [ ([[true;true;false;false;false;false;false;false]]) ; b1 ] |
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305 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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306 | | RET ⇒ |
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307 | [ ([[false;false;true;false;false;false;true;false]]) ] |
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308 | | RETI ⇒ |
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309 | [ ([[false;false;true;true;false;false;true;false]]) ] |
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310 | | RL addr ⇒ |
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311 | [ ([[false;false;true;false;false;false;true;true]]) ] |
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312 | | RLC addr ⇒ |
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313 | [ ([[false;false;true;true;false;false;true;true]]) ] |
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314 | | RR addr ⇒ |
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315 | [ ([[false;false;false;false;false;false;true;true]]) ] |
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316 | | RRC addr ⇒ |
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317 | [ ([[false;false;false;true;false;false;true;true]]) ] |
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318 | | SETB addr ⇒ |
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319 | match addr return λx. bool_to_Prop (is_in ? [[carry;bit_addr]] x) → ? with |
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320 | [ CARRY ⇒ λ_. |
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321 | [ ([[true;true;false;true;false;false;true;true]]) ] |
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322 | | BIT_ADDR b1 ⇒ λ_. |
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323 | [ ([[true;true;false;true;false;false;true;false]]); b1 ] |
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324 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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325 | | SUBB addr1 addr2 ⇒ |
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326 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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327 | [ REGISTER r ⇒ λ_. |
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328 | [ ([[true;false;false;true;true]]) @@ r ] |
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329 | | DIRECT b1 ⇒ λ_. |
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330 | [ ([[true;false;false;true;false;true;false;true]]); b1] |
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331 | | INDIRECT i1 ⇒ λ_. |
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332 | [ ([[true;false;false;true;false;true;true;i1]]) ] |
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333 | | DATA b1 ⇒ λ_. |
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334 | [ ([[true;false;false;true;false;true;false;false]]); b1] |
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335 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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336 | | SWAP addr ⇒ |
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337 | [ ([[true;true;false;false;false;true;false;false]]) ] |
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338 | | XCH addr1 addr2 ⇒ |
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339 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect]] x) → ? with |
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340 | [ REGISTER r ⇒ λ_. |
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341 | [ ([[true;true;false;false;true]]) @@ r ] |
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342 | | DIRECT b1 ⇒ λ_. |
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343 | [ ([[true;true;false;false;false;true;false;true]]); b1] |
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344 | | INDIRECT i1 ⇒ λ_. |
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345 | [ ([[true;true;false;false;false;true;true;i1]]) ] |
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346 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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347 | | XCHD addr1 addr2 ⇒ |
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348 | match addr2 return λx. bool_to_Prop (is_in ? [[indirect]] x) → ? with |
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349 | [ INDIRECT i1 ⇒ λ_. |
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350 | [ ([[true;true;false;true;false;true;true;i1]]) ] |
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351 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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352 | | XRL addrs ⇒ |
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353 | match addrs with |
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354 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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355 | match addr2 return λx. bool_to_Prop (is_in ? [[data;registr;direct;indirect]] x) → ? with |
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356 | [ REGISTER r ⇒ λ_. |
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357 | [ ([[false;true;true;false;true]]) @@ r ] |
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358 | | DIRECT b1 ⇒ λ_. |
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359 | [ ([[false;true;true;false;false;true;false;true]]); b1] |
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360 | | INDIRECT i1 ⇒ λ_. |
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361 | [ ([[false;true;true;false;false;true;true;i1]]) ] |
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362 | | DATA b1 ⇒ λ_. |
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363 | [ ([[false;true;true;false;false;true;false;false]]); b1] |
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364 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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365 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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366 | let b1 ≝ |
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367 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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368 | [ DIRECT b1 ⇒ λ_. b1 |
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369 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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370 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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371 | [ ACC_A ⇒ λ_. |
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372 | [ ([[false;true;true;false;false;false;true;false]]); b1 ] |
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373 | | DATA b2 ⇒ λ_. |
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374 | [ ([[false;true;true;false;false;false;true;true]]); b1; b2 ] |
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375 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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376 | ]. |
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377 | |
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378 | definition assembly1 ≝ |
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379 | λi: instruction. |
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380 | match i with |
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381 | [ ACALL addr ⇒ |
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382 | match addr return λx. bool_to_Prop (is_in ? [[addr11]] x) → ? with |
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383 | [ ADDR11 w ⇒ λ_. |
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384 | let v1_v2 ≝ vsplit ? 3 8 w in |
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385 | let v1 ≝ \fst v1_v2 in |
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386 | let v2 ≝ \snd v1_v2 in |
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387 | [ (v1 @@ [[true; false; false; false; true]]) ; v2 ] |
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388 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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389 | | AJMP addr ⇒ |
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390 | match addr return λx. bool_to_Prop (is_in ? [[addr11]] x) → ? with |
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391 | [ ADDR11 w ⇒ λ_. |
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392 | let v1_v2 ≝ vsplit ? 3 8 w in |
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393 | let v1 ≝ \fst v1_v2 in |
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394 | let v2 ≝ \snd v1_v2 in |
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395 | [ (v1 @@ [[false; false; false; false; true]]) ; v2 ] |
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396 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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397 | | JMP adptr ⇒ |
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398 | [ ([[false;true;true;true;false;false;true;true]]) ] |
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399 | | LCALL addr ⇒ |
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400 | match addr return λx. bool_to_Prop (is_in ? [[addr16]] x) → ? with |
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401 | [ ADDR16 w ⇒ λ_. |
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402 | let b1_b2 ≝ vsplit ? 8 8 w in |
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403 | let b1 ≝ \fst b1_b2 in |
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404 | let b2 ≝ \snd b1_b2 in |
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405 | [ ([[false;false;false;true;false;false;true;false]]); b1; b2 ] |
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406 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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407 | | LJMP addr ⇒ |
---|
408 | match addr return λx. bool_to_Prop (is_in ? [[addr16]] x) → ? with |
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409 | [ ADDR16 w ⇒ λ_. |
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410 | let b1_b2 ≝ vsplit ? 8 8 w in |
---|
411 | let b1 ≝ \fst b1_b2 in |
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412 | let b2 ≝ \snd b1_b2 in |
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413 | [ ([[false;false;false;false;false;false;true;false]]); b1; b2 ] |
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414 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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415 | | MOVC addr1 addr2 ⇒ |
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416 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_dptr;acc_pc]] x) → ? with |
---|
417 | [ ACC_DPTR ⇒ λ_. |
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418 | [ ([[true;false;false;true;false;false;true;true]]) ] |
---|
419 | | ACC_PC ⇒ λ_. |
---|
420 | [ ([[true;false;false;false;false;false;true;true]]) ] |
---|
421 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
---|
422 | | SJMP addr ⇒ |
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423 | match addr return λx. bool_to_Prop (is_in ? [[relative]] x) → ? with |
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424 | [ RELATIVE b1 ⇒ λ_. |
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425 | [ ([[true;false;false;false;false;false;false;false]]); b1 ] |
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426 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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427 | | RealInstruction instr ⇒ |
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428 | assembly_preinstruction [[ relative ]] |
---|
429 | (λx. |
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430 | match x return λs. bool_to_Prop (is_in ? [[ relative ]] s) → ? with |
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431 | [ RELATIVE r ⇒ λ_. r |
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432 | | _ ⇒ λabsd. ⊥ |
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433 | ] (subaddressing_modein … x)) instr |
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434 | ]. |
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435 | cases absd |
---|
436 | qed. |
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437 | |
---|
438 | (* XXX: pc_plus_sjmp_length used to be just sigma of ppc. This is incorrect |
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439 | as relative lengths are computed from the *end* of the SJMP, not from |
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440 | the beginning. |
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441 | *) |
---|
442 | definition expand_relative_jump_internal: |
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443 | ∀lookup_labels:Identifier → Word.∀sigma:Word → Word. |
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444 | Identifier → Word → ([[relative]] → preinstruction [[relative]]) → |
---|
445 | list instruction |
---|
446 | ≝ |
---|
447 | λlookup_labels.λsigma.λlbl.λppc,i. |
---|
448 | let lookup_address ≝ sigma (lookup_labels lbl) in |
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449 | let pc_plus_jmp_length ≝ sigma (add … ppc (bitvector_of_nat … 1)) in |
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450 | let 〈sj_possible, disp〉 ≝ short_jump_cond pc_plus_jmp_length lookup_address in |
---|
451 | if sj_possible |
---|
452 | then |
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453 | let address ≝ RELATIVE disp in |
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454 | [ RealInstruction (i address) ] |
---|
455 | else |
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456 | [ RealInstruction (i (RELATIVE (bitvector_of_nat ? 2))); |
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457 | SJMP (RELATIVE (bitvector_of_nat ? 3)); (* LJMP size? *) |
---|
458 | LJMP (ADDR16 lookup_address) |
---|
459 | ]. |
---|
460 | % |
---|
461 | qed. |
---|
462 | |
---|
463 | definition expand_relative_jump: |
---|
464 | ∀lookup_labels.∀sigma. |
---|
465 | Word → (*jump_length →*) |
---|
466 | preinstruction Identifier → list instruction ≝ |
---|
467 | λlookup_labels: Identifier → Word. |
---|
468 | λsigma:Word → Word. |
---|
469 | λppc: Word. |
---|
470 | (*λjmp_len: jump_length.*) |
---|
471 | λi: preinstruction Identifier. |
---|
472 | (*let rel_jmp ≝ RELATIVE (bitvector_of_nat ? 2) in*) |
---|
473 | match i with |
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474 | [ JC jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JC ?) |
---|
475 | | JNC jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JNC ?) |
---|
476 | | JB baddr jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JB ? baddr) |
---|
477 | | JZ jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JZ ?) |
---|
478 | | JNZ jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JNZ ?) |
---|
479 | | JBC baddr jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JBC ? baddr) |
---|
480 | | JNB baddr jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (JNB ? baddr) |
---|
481 | | CJNE addr jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (CJNE ? addr) |
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482 | | DJNZ addr jmp ⇒ expand_relative_jump_internal lookup_labels sigma jmp ppc (DJNZ ? addr) |
---|
483 | | ADD arg1 arg2 ⇒ [ ADD ? arg1 arg2 ] |
---|
484 | | ADDC arg1 arg2 ⇒ [ ADDC ? arg1 arg2 ] |
---|
485 | | SUBB arg1 arg2 ⇒ [ SUBB ? arg1 arg2 ] |
---|
486 | | INC arg ⇒ [ INC ? arg ] |
---|
487 | | DEC arg ⇒ [ DEC ? arg ] |
---|
488 | | MUL arg1 arg2 ⇒ [ MUL ? arg1 arg2 ] |
---|
489 | | DIV arg1 arg2 ⇒ [ DIV ? arg1 arg2 ] |
---|
490 | | DA arg ⇒ [ DA ? arg ] |
---|
491 | | ANL arg ⇒ [ ANL ? arg ] |
---|
492 | | ORL arg ⇒ [ ORL ? arg ] |
---|
493 | | XRL arg ⇒ [ XRL ? arg ] |
---|
494 | | CLR arg ⇒ [ CLR ? arg ] |
---|
495 | | CPL arg ⇒ [ CPL ? arg ] |
---|
496 | | RL arg ⇒ [ RL ? arg ] |
---|
497 | | RR arg ⇒ [ RR ? arg ] |
---|
498 | | RLC arg ⇒ [ RLC ? arg ] |
---|
499 | | RRC arg ⇒ [ RRC ? arg ] |
---|
500 | | SWAP arg ⇒ [ SWAP ? arg ] |
---|
501 | | MOV arg ⇒ [ MOV ? arg ] |
---|
502 | | MOVX arg ⇒ [ MOVX ? arg ] |
---|
503 | | SETB arg ⇒ [ SETB ? arg ] |
---|
504 | | PUSH arg ⇒ [ PUSH ? arg ] |
---|
505 | | POP arg ⇒ [ POP ? arg ] |
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506 | | XCH arg1 arg2 ⇒ [ XCH ? arg1 arg2 ] |
---|
507 | | XCHD arg1 arg2 ⇒ [ XCHD ? arg1 arg2 ] |
---|
508 | | RET ⇒ [ RET ? ] |
---|
509 | | RETI ⇒ [ RETI ? ] |
---|
510 | | NOP ⇒ [ RealInstruction (NOP ?) ] |
---|
511 | ]. |
---|
512 | |
---|
513 | definition expand_pseudo_instruction: |
---|
514 | ∀lookup_labels. |
---|
515 | ∀sigma: Word → Word. |
---|
516 | ∀policy: Word → bool. |
---|
517 | Word → ? → pseudo_instruction → list instruction ≝ |
---|
518 | λlookup_labels: Identifier → Word. |
---|
519 | λsigma: Word → Word. |
---|
520 | λpolicy: Word → bool. |
---|
521 | λppc. |
---|
522 | λlookup_datalabels:Identifier → Word. |
---|
523 | λi. |
---|
524 | match i with |
---|
525 | [ Cost cost ⇒ [ ] |
---|
526 | | Comment comment ⇒ [ ] |
---|
527 | | Call call ⇒ |
---|
528 | let pc_plus_jmp_length ≝ sigma (add … ppc (bitvector_of_nat … 1)) in |
---|
529 | let lookup_address ≝ sigma (lookup_labels call) in |
---|
530 | let 〈mj_possible, disp〉 ≝ absolute_jump_cond pc_plus_jmp_length lookup_address in |
---|
531 | let do_a_long ≝ policy ppc in |
---|
532 | if mj_possible ∧ ¬ do_a_long then |
---|
533 | let address ≝ ADDR11 disp in |
---|
534 | [ ACALL address ] |
---|
535 | else |
---|
536 | let address ≝ ADDR16 lookup_address in |
---|
537 | [ LCALL address ] |
---|
538 | | Mov d trgt ⇒ |
---|
539 | let address ≝ DATA16 (lookup_datalabels trgt) in |
---|
540 | [ RealInstruction (MOV ? (inl ? ? (inl ? ? (inr ? ? 〈DPTR, address〉))))] |
---|
541 | | Instruction instr ⇒ expand_relative_jump lookup_labels sigma ppc instr |
---|
542 | | Jmp jmp ⇒ |
---|
543 | let pc_plus_jmp_length ≝ sigma (add … ppc (bitvector_of_nat … 1)) in |
---|
544 | let do_a_long ≝ policy ppc in |
---|
545 | let lookup_address ≝ sigma (lookup_labels jmp) in |
---|
546 | let 〈sj_possible, disp〉 ≝ short_jump_cond pc_plus_jmp_length lookup_address in |
---|
547 | if sj_possible ∧ ¬ do_a_long then |
---|
548 | let address ≝ RELATIVE disp in |
---|
549 | [ SJMP address ] |
---|
550 | else |
---|
551 | let 〈mj_possible, disp2〉 ≝ absolute_jump_cond pc_plus_jmp_length lookup_address in |
---|
552 | if mj_possible ∧ ¬ do_a_long then |
---|
553 | let address ≝ ADDR11 disp2 in |
---|
554 | [ AJMP address ] |
---|
555 | else |
---|
556 | let address ≝ ADDR16 lookup_address in |
---|
557 | [ LJMP address ] |
---|
558 | ]. |
---|
559 | % |
---|
560 | qed. |
---|
561 | |
---|
562 | definition assembly_1_pseudoinstruction ≝ |
---|
563 | λlookup_labels. |
---|
564 | λsigma: Word → Word. |
---|
565 | λpolicy: Word → bool. |
---|
566 | λppc: Word. |
---|
567 | λlookup_datalabels. |
---|
568 | λi. |
---|
569 | let pseudos ≝ expand_pseudo_instruction lookup_labels sigma policy ppc lookup_datalabels i in |
---|
570 | let mapped ≝ map ? ? assembly1 pseudos in |
---|
571 | let flattened ≝ flatten ? mapped in |
---|
572 | let pc_len ≝ length ? flattened in |
---|
573 | 〈pc_len, flattened〉. |
---|
574 | |
---|
575 | definition instruction_size ≝ |
---|
576 | λlookup_labels. |
---|
577 | λsigma: Word → Word. |
---|
578 | λpolicy: Word → bool. |
---|
579 | λppc. |
---|
580 | λi. |
---|
581 | \fst (assembly_1_pseudoinstruction lookup_labels sigma policy ppc (λx.zero …) i). |
---|
582 | |
---|
583 | |
---|
584 | (* label_map: identifier ↦ pseudo program counter *) |
---|
585 | definition label_map ≝ identifier_map ASMTag ℕ. |
---|
586 | |
---|
587 | (* Labels *) |
---|
588 | definition is_label ≝ |
---|
589 | λx:labelled_instruction.λl:Identifier. |
---|
590 | let 〈lbl,instr〉 ≝ x in |
---|
591 | match lbl with |
---|
592 | [ Some l' ⇒ l' = l |
---|
593 | | _ ⇒ False |
---|
594 | ]. |
---|
595 | |
---|
596 | lemma label_does_not_occur: |
---|
597 | ∀i:ℕ.∀p:list labelled_instruction.∀l:Identifier. |
---|
598 | is_label (nth i ? p 〈None ?, Comment [ ]〉) l → does_not_occur ?? l p = false. |
---|
599 | #i #p #l generalize in match i; elim p |
---|
600 | [ #i >nth_nil #H cases H |
---|
601 | | #h #t #IH #i cases i -i |
---|
602 | [ cases h #hi #hp cases hi |
---|
603 | [ normalize #H cases H |
---|
604 | | #l' #Heq whd in ⊢ (??%?); change with (eq_identifier ? l' l) in match (instruction_matches_identifier ????); |
---|
605 | whd in Heq; >Heq |
---|
606 | >eq_identifier_refl / by refl/ |
---|
607 | ] |
---|
608 | | #i #H whd in match (does_not_occur ????); |
---|
609 | whd in match (instruction_matches_identifier ????); |
---|
610 | cases h #hi #hp cases hi normalize nodelta |
---|
611 | [ @(IH i) @H |
---|
612 | | #l' @eq_identifier_elim |
---|
613 | [ normalize / by / |
---|
614 | | normalize #_ @(IH i) @H |
---|
615 | ] |
---|
616 | ] |
---|
617 | ] |
---|
618 | ] |
---|
619 | qed. |
---|
620 | |
---|
621 | (* The function that creates the label-to-address map *) |
---|
622 | definition create_label_cost_map0: ∀program:list labelled_instruction. |
---|
623 | (Σlabels_costs:label_map × (BitVectorTrie costlabel 16). (* Both on ppcs *) |
---|
624 | let 〈labels,costs〉 ≝ labels_costs in |
---|
625 | ∀l.occurs_exactly_once ?? l program → |
---|
626 | bitvector_of_nat ? (lookup_def ?? labels l 0) = |
---|
627 | address_of_word_labels_code_mem program l |
---|
628 | ) ≝ |
---|
629 | λprogram. |
---|
630 | \fst (pi1 ?? (foldl_strong (option Identifier × pseudo_instruction) |
---|
631 | (λprefix.Σlabels_costs_ppc:label_map × (BitVectorTrie costlabel 16) × ℕ. |
---|
632 | let 〈labels,costs,ppc〉 ≝ labels_costs_ppc in |
---|
633 | ppc = |prefix| ∧ |
---|
634 | ∀l.occurs_exactly_once ?? l prefix → |
---|
635 | bitvector_of_nat ? (lookup_def ?? labels l 0) = |
---|
636 | address_of_word_labels_code_mem prefix l) |
---|
637 | program |
---|
638 | (λprefix.λx.λtl.λprf.λlabels_costs_ppc. |
---|
639 | let 〈labels,costs,ppc〉 ≝ pi1 ?? labels_costs_ppc in |
---|
640 | let 〈label,instr〉 ≝ x in |
---|
641 | let labels ≝ |
---|
642 | match label with |
---|
643 | [ None ⇒ labels |
---|
644 | | Some l ⇒ add … labels l ppc |
---|
645 | ] in |
---|
646 | let costs ≝ |
---|
647 | match instr with |
---|
648 | [ Cost cost ⇒ insert … (bitvector_of_nat ? ppc) cost costs |
---|
649 | | _ ⇒ costs ] in |
---|
650 | 〈labels,costs,S ppc〉 |
---|
651 | ) 〈(empty_map …),(Stub ??),0〉)). |
---|
652 | [ normalize nodelta lapply (pi2 … labels_costs_ppc) >p >p1 normalize nodelta * #IH1 #IH2 |
---|
653 | -labels_costs_ppc % [>IH1 >length_append <plus_n_Sm <plus_n_O %] |
---|
654 | inversion label [#EQ | #l #EQ] |
---|
655 | [ #lbl #Hocc <address_of_word_labels_code_mem_None [2: @Hocc] normalize nodelta |
---|
656 | >occurs_exactly_once_None in Hocc; @(IH2 lbl) |
---|
657 | | #lbl normalize nodelta inversion (eq_identifier ? lbl l) |
---|
658 | [ #Heq #Hocc >(eq_identifier_eq … Heq) |
---|
659 | >address_of_word_labels_code_mem_Some_hit |
---|
660 | [ >IH1 >lookup_def_add_hit % |
---|
661 | | <(eq_identifier_eq … Heq) in Hocc; // |
---|
662 | ] |
---|
663 | | #Hneq #Hocc |
---|
664 | <address_of_word_labels_code_mem_Some_miss |
---|
665 | [ >lookup_def_add_miss |
---|
666 | [ @IH2 >occurs_exactly_once_Some_eq in Hocc; >eq_identifier_sym> Hneq // |
---|
667 | | % @neq_identifier_neq @Hneq |
---|
668 | ] |
---|
669 | | @Hocc |
---|
670 | | >eq_identifier_sym @Hneq |
---|
671 | ] |
---|
672 | ] |
---|
673 | ] |
---|
674 | | @pair_elim * #labels #costs #ppc #EQ destruct normalize nodelta % try % |
---|
675 | #l #abs cases (abs) |
---|
676 | | cases (foldl_strong ? (λ_.Σx.?) ???) * * #labels #costs #ppc normalize nodelta * |
---|
677 | #_ #H @H |
---|
678 | ] |
---|
679 | qed. |
---|
680 | |
---|
681 | (* The function that creates the label-to-address map *) |
---|
682 | definition create_label_cost_map: ∀program:list labelled_instruction. |
---|
683 | label_map × (BitVectorTrie costlabel 16) ≝ |
---|
684 | λprogram. |
---|
685 | pi1 … (create_label_cost_map0 program). |
---|
686 | |
---|
687 | theorem create_label_cost_map_ok: |
---|
688 | ∀pseudo_program: pseudo_assembly_program. |
---|
689 | let 〈labels, costs〉 ≝ create_label_cost_map (\snd pseudo_program) in |
---|
690 | ∀id. occurs_exactly_once ?? id (\snd pseudo_program) → |
---|
691 | bitvector_of_nat ? (lookup_def ?? labels id 0) = address_of_word_labels_code_mem (\snd pseudo_program) id. |
---|
692 | #p change with (pi1 … (create_label_cost_map0 ?)) in match (create_label_cost_map ?); @pi2 |
---|
693 | qed. |
---|
694 | |
---|
695 | definition sigma_policy_specification ≝ |
---|
696 | λprogram: pseudo_assembly_program. |
---|
697 | λsigma: Word → Word. |
---|
698 | λpolicy: Word → bool. |
---|
699 | sigma (zero …) = zero … ∧ |
---|
700 | let instr_list ≝ \snd program in |
---|
701 | ∀ppc: Word. ∀ppc_ok: nat_of_bitvector … ppc < |instr_list|. |
---|
702 | let pc ≝ sigma ppc in |
---|
703 | let labels ≝ \fst (create_label_cost_map instr_list) in |
---|
704 | let lookup_labels ≝ λx. bitvector_of_nat 16 (lookup_def … labels x 0) in |
---|
705 | let instruction ≝ \fst (fetch_pseudo_instruction instr_list ppc ppc_ok) in |
---|
706 | let next_pc ≝ sigma (add 16 ppc (bitvector_of_nat 16 1)) in |
---|
707 | next_pc = add 16 pc (bitvector_of_nat … (instruction_size lookup_labels sigma policy ppc instruction)) |
---|
708 | ∧ |
---|
709 | (nat_of_bitvector … pc + instruction_size lookup_labels sigma policy ppc instruction < 2^16 |
---|
710 | ∨ |
---|
711 | (∀ppc'. ∀ppc_ok':nat_of_bitvector … ppc' < |instr_list|. nat_of_bitvector … ppc < nat_of_bitvector … ppc' → |
---|
712 | let instruction' ≝ \fst (fetch_pseudo_instruction instr_list ppc' ppc_ok') in |
---|
713 | instruction_size lookup_labels sigma policy ppc' instruction' = 0) |
---|
714 | ∧ |
---|
715 | nat_of_bitvector … pc + instruction_size lookup_labels sigma policy ppc instruction = 2^16). |
---|
716 | |
---|
717 | |
---|
718 | lemma fst_assembly_1_pseudoinstruction_insensible_to_lookup_datalabels: |
---|
719 | ∀lookup_labels,sigma,policy,ppc,pi. |
---|
720 | ∀lookup_datalabels1,lookup_datalabels2. |
---|
721 | \fst (assembly_1_pseudoinstruction lookup_labels sigma policy ppc lookup_datalabels1 pi) = |
---|
722 | \fst (assembly_1_pseudoinstruction lookup_labels sigma policy ppc lookup_datalabels2 pi). |
---|
723 | #lookup_labels #sigma #policy #ppc #pi #lookup_datalabels1 #lookup_datalabels2 |
---|
724 | cases pi // |
---|
725 | qed. |
---|
726 | |
---|
727 | lemma fst_snd_assembly_1_pseudoinstruction: |
---|
728 | ∀lookup_labels,sigma,policy,ppc,pi,lookup_datalabels,len,assembled. |
---|
729 | assembly_1_pseudoinstruction lookup_labels sigma policy ppc lookup_datalabels pi |
---|
730 | = 〈len,assembled〉 → |
---|
731 | len = |assembled|. |
---|
732 | #lookup #sigma #policy #ppc #pi #lookup_datalabels #len #assembled |
---|
733 | inversion (assembly_1_pseudoinstruction ??????) #len' #assembled' |
---|
734 | whd in ⊢ (??%? → ?); #EQ1 #EQ2 destruct % |
---|
735 | qed. |
---|
736 | |
---|
737 | (* XXX: easy but tedious *) |
---|
738 | lemma assembly1_lt_128: |
---|
739 | ∀i: instruction. |
---|
740 | |(assembly1 i)| < 128. |
---|
741 | cases daemon |
---|
742 | (* XXX: commented out as takes ages to type check |
---|
743 | #i cases i |
---|
744 | try (#assm1 #assm2) try #assm1 |
---|
745 | [8: |
---|
746 | cases assm1 |
---|
747 | try (#assm1 #assm2) try #assm1 |
---|
748 | whd in match assembly1; normalize nodelta |
---|
749 | whd in match assembly_preinstruction; normalize nodelta |
---|
750 | try @(subaddressing_mode_elim … assm2) |
---|
751 | try @(subaddressing_mode_elim … assm1) try #w try #w' normalize nodelta |
---|
752 | [32: |
---|
753 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
754 | cases assm1 #addr1 #addr2 normalize nodelta |
---|
755 | [1: |
---|
756 | @(subaddressing_mode_elim … addr2) |
---|
757 | |2: |
---|
758 | @(subaddressing_mode_elim … addr1) |
---|
759 | ] |
---|
760 | #w |
---|
761 | |35,36,37: |
---|
762 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
763 | [1,3: |
---|
764 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
765 | ] |
---|
766 | cases assm1 #addr1 #addr2 normalize nodelta |
---|
767 | @(subaddressing_mode_elim … addr2) try #w |
---|
768 | |49: |
---|
769 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
770 | [1: |
---|
771 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
772 | [1: |
---|
773 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
774 | [1: |
---|
775 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
776 | [1: |
---|
777 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
778 | ] |
---|
779 | ] |
---|
780 | ] |
---|
781 | ] |
---|
782 | cases assm1 #addr1 #addr2 normalize nodelta |
---|
783 | [1,3,4,5: |
---|
784 | @(subaddressing_mode_elim … addr2) try #w |
---|
785 | |*: |
---|
786 | @(subaddressing_mode_elim … addr1) try #w |
---|
787 | normalize nodelta |
---|
788 | [1,2: |
---|
789 | @(subaddressing_mode_elim … addr2) try #w |
---|
790 | ] |
---|
791 | ] |
---|
792 | |50: |
---|
793 | cases assm1 -assm1 #assm1 normalize nodelta |
---|
794 | cases assm1 #addr1 #addr2 normalize nodelta |
---|
795 | [1: |
---|
796 | @(subaddressing_mode_elim … addr2) try #w |
---|
797 | |2: |
---|
798 | @(subaddressing_mode_elim … addr1) try #w |
---|
799 | ] |
---|
800 | ] |
---|
801 | normalize repeat @le_S_S @le_O_n |
---|
802 | ] |
---|
803 | whd in match assembly1; normalize nodelta |
---|
804 | [6: |
---|
805 | normalize repeat @le_S_S @le_O_n |
---|
806 | |7: |
---|
807 | @(subaddressing_mode_elim … assm2) normalize repeat @le_S_S @le_O_n |
---|
808 | |*: |
---|
809 | @(subaddressing_mode_elim … assm1) #w normalize nodelta repeat @le_S_S @le_O_n |
---|
810 | ] |
---|
811 | *) |
---|
812 | qed. |
---|
813 | |
---|
814 | lemma assembly1_pseudoinstruction_lt_2_to_16: |
---|
815 | ∀lookup_labels,sigma,policy,ppc,lookup_datalabels,pi. |
---|
816 | |\snd (assembly_1_pseudoinstruction |
---|
817 | lookup_labels sigma policy ppc lookup_datalabels pi)| |
---|
818 | < 2^16. |
---|
819 | #lookup_labels #sigma #policy #ppc #lookup_datalabels * |
---|
820 | [ cut (128 < 2^16) [@leb_true_to_le %] #LT |
---|
821 | * whd in match (assembly_1_pseudoinstruction ??????); |
---|
822 | whd in match (expand_pseudo_instruction ??????); |
---|
823 | whd in match assembly_1_pseudoinstruction; normalize nodelta |
---|
824 | try (#arg1 #arg2 #arg3) try (#arg1 #arg2) try #arg1 |
---|
825 | whd in match (expand_pseudo_instruction ??????); |
---|
826 | try |
---|
827 | (change with (|flatten ? [assembly1 ?]| < ?) |
---|
828 | >flatten_singleton |
---|
829 | @(transitive_lt … (assembly1_lt_128 ?)) |
---|
830 | @LT) |
---|
831 | @pair_elim #x #y #_ cases x normalize nodelta |
---|
832 | try |
---|
833 | (change with (|flatten ? [assembly1 ?]| < ?) |
---|
834 | >flatten_singleton |
---|
835 | @(transitive_lt … (assembly1_lt_128 ?)) |
---|
836 | @LT) |
---|
837 | change with (|flatten ? [assembly1 ?; assembly1 ?; assembly1 ?]| < ?) |
---|
838 | >length_flatten_cons >length_flatten_cons >length_flatten_cons <plus_n_O |
---|
839 | <associative_plus @(transitive_lt … (tech_transitive_lt_3 … (2^7) ???)) |
---|
840 | try @assembly1_lt_128 @leb_true_to_le % |
---|
841 | |2,3: #msg normalize in ⊢ (?%?); // |
---|
842 | | #label whd in match (assembly_1_pseudoinstruction ??????); |
---|
843 | whd in match (expand_pseudo_instruction ??????); |
---|
844 | @pair_elim #sj_poss #disp cases (?∧?) normalize nodelta #_ |
---|
845 | [2: @pair_elim #x #y #_ cases (?∧?)] |
---|
846 | normalize in ⊢ (?%?); // |
---|
847 | | #label whd in match (assembly_1_pseudoinstruction ??????); |
---|
848 | whd in match (expand_pseudo_instruction ??????); |
---|
849 | @pair_elim #sj_poss #disp cases (?∧?) normalize nodelta #_ |
---|
850 | normalize in ⊢ (?%?); // |
---|
851 | | #dptr #id normalize in ⊢ (?%?); // |
---|
852 | ] |
---|
853 | qed. |
---|
854 | |
---|
855 | definition assembly: |
---|
856 | ∀p: pseudo_assembly_program. |
---|
857 | ∀sigma: Word → Word. |
---|
858 | ∀policy: Word → bool. |
---|
859 | Σres:list Byte × (BitVectorTrie costlabel 16). |
---|
860 | sigma_policy_specification p sigma policy → |
---|
861 | let 〈preamble,instr_list〉 ≝ p in |
---|
862 | |instr_list| ≤ 2^16 → |
---|
863 | let 〈assembled,costs〉 ≝ res in |
---|
864 | |assembled| ≤ 2^16 ∧ |
---|
865 | (nat_of_bitvector … (sigma (bitvector_of_nat … (|instr_list|))) = |assembled| ∨ |
---|
866 | sigma (bitvector_of_nat … (|instr_list|)) = zero … ∧ |assembled| = 2^16) ∧ |
---|
867 | let 〈labels_to_ppc,ppc_to_costs〉 ≝ create_label_cost_map instr_list in |
---|
868 | let datalabels ≝ construct_datalabels preamble in |
---|
869 | let lookup_labels ≝ λx. bitvector_of_nat ? (lookup_def … labels_to_ppc x 0) in |
---|
870 | let lookup_datalabels ≝ λx. lookup_def … datalabels x (zero ?) in |
---|
871 | ∀ppc. ∀ppc_ok:nat_of_bitvector … ppc < |instr_list|. |
---|
872 | let 〈pi,newppc〉 ≝ fetch_pseudo_instruction instr_list ppc ppc_ok in |
---|
873 | let 〈len,assembledi〉 ≝ |
---|
874 | assembly_1_pseudoinstruction lookup_labels sigma policy ppc lookup_datalabels pi in |
---|
875 | |assembledi| ≤ |assembled| ∧ |
---|
876 | ∀j:nat. ∀H: j < |assembledi|. ∀K. |
---|
877 | nth_safe ? j assembledi H = |
---|
878 | nth_safe ? (nat_of_bitvector … (add … (sigma ppc) (bitvector_of_nat ? j))) |
---|
879 | assembled K |
---|
880 | ≝ |
---|
881 | λp. |
---|
882 | λsigma. |
---|
883 | λpolicy. |
---|
884 | deplet 〈preamble, instr_list〉 as p_refl ≝ p in |
---|
885 | deplet 〈labels_to_ppc,ppc_to_costs〉 as eq_create_label_cost_map ≝ create_label_cost_map instr_list in |
---|
886 | let datalabels ≝ construct_datalabels preamble in |
---|
887 | let lookup_labels ≝ λx. bitvector_of_nat ? (lookup_def … labels_to_ppc x 0) in |
---|
888 | let lookup_datalabels ≝ λx. lookup_def … datalabels x (zero ?) in |
---|
889 | let 〈next_pc,revcode〉 ≝ pi1 … ( |
---|
890 | foldl_strong |
---|
891 | (option Identifier × pseudo_instruction) |
---|
892 | (λpre. Σppc_code:(Word × (list Byte)). |
---|
893 | sigma_policy_specification 〈preamble,instr_list〉 sigma policy → |
---|
894 | |instr_list| ≤ 2^16 → |
---|
895 | let 〈ppc,code〉 ≝ ppc_code in |
---|
896 | ppc = bitvector_of_nat … (|pre|) ∧ |
---|
897 | |code| ≤ 2^16 ∧ |
---|
898 | True(*(ppc = zero … → code = [])*) ∧ |
---|
899 | (nat_of_bitvector … (sigma ppc) = |code| ∨ |
---|
900 | sigma ppc = zero … ∧ |code| = 2^16 ∧ |
---|
901 | (|pre| < 2^16 → ∀ppc'. ∀ppc_ok':nat_of_bitvector … ppc' < |instr_list|. nat_of_bitvector … ppc ≤ nat_of_bitvector … ppc' → |
---|
902 | let instruction' ≝ \fst (fetch_pseudo_instruction instr_list ppc' ppc_ok') in |
---|
903 | instruction_size lookup_labels sigma policy ppc' instruction' = 0) |
---|
904 | ) ∧ |
---|
905 | ∀ppc'.∀ppc_ok'. |
---|
906 | (nat_of_bitvector … ppc' < nat_of_bitvector … ppc ∨ |pre| = 2^16) → |
---|
907 | let 〈pi,newppc〉 ≝ fetch_pseudo_instruction instr_list ppc' ppc_ok' in |
---|
908 | let 〈len,assembledi〉 ≝ |
---|
909 | assembly_1_pseudoinstruction lookup_labels sigma policy ppc' lookup_datalabels pi in |
---|
910 | |assembledi| ≤ |reverse … code| ∧ |
---|
911 | ∀j:nat. ∀H: j < |assembledi|. ∀K. |
---|
912 | nth_safe ? j assembledi H = |
---|
913 | nth_safe ? (nat_of_bitvector … (add … (sigma ppc') (bitvector_of_nat ? j))) (reverse … code) K) |
---|
914 | instr_list |
---|
915 | (λprefix,hd,tl,prf,ppc_code. |
---|
916 | let 〈ppc, code〉 ≝ pi1 … ppc_code in |
---|
917 | let 〈pc_delta, program〉 ≝ assembly_1_pseudoinstruction lookup_labels sigma policy ppc lookup_datalabels (\snd hd) in |
---|
918 | let new_ppc ≝ add ? ppc (bitvector_of_nat ? 1) in |
---|
919 | 〈new_ppc, (reverse … program @ code)〉) |
---|
920 | 〈(zero ?), [ ]〉) |
---|
921 | in |
---|
922 | 〈reverse … revcode, |
---|
923 | fold … (λppc.λcost.λpc_to_costs. insert … (sigma ppc) cost pc_to_costs) ppc_to_costs (Stub ??)〉. |
---|
924 | [ cases (foldl_strong ? (λx.Σy.?) ???) in p1; #ignore_revcode #Hfold #EQignore_revcode |
---|
925 | >EQignore_revcode in Hfold; #Hfold #sigma_pol_ok #instr_list_ok |
---|
926 | cases (Hfold sigma_pol_ok instr_list_ok) -Hfold * * * #Hfold1 #Hfold4 #_ #Hfold5 #Hfold3 whd |
---|
927 | <eq_create_label_cost_map whd % |
---|
928 | [2: #ppc #LTppc @Hfold3 >Hfold1 @(eqb_elim (|instr_list|) 2^16) |
---|
929 | [ #limit %2 @limit |
---|
930 | | #nlimit %1 >nat_of_bitvector_bitvector_of_nat_inverse try assumption |
---|
931 | @not_eq_to_le_to_lt assumption ] |
---|
932 | | >length_reverse % try assumption cases Hfold5 -Hfold5 |
---|
933 | [ #Hfold5 <Hfold5 % >Hfold1 % |
---|
934 | | * #Hfold51 #Hfold52 %2 <Hfold1 assumption ]] |
---|
935 | | * #sigma_pol_ok1 #_ #instr_list_ok % |
---|
936 | [ % % [%] // >sigma_pol_ok1 % ] |
---|
937 | #ppc' #ppc_ok' #abs @⊥ cases abs |
---|
938 | [#abs2 cases (not_le_Sn_O ?) [#H @(H abs2) | skip] |
---|
939 | |#abs2 change with (0 = S ?) in abs2; destruct(abs2) ] |
---|
940 | | * #sigma_pol_ok1 #sigma_pol_ok2 #instr_list_ok cases ppc_code in p1; -ppc_code #ppc_code #IH #EQppc_code >EQppc_code in IH; -EQppc_code |
---|
941 | #IH cases (IH ? instr_list_ok) [2: % assumption ] -IH |
---|
942 | * * * #IH1 #IH2 #IH2' #IH3 #IH4 |
---|
943 | cut (|prefix| < |instr_list|) |
---|
944 | [ >prf >length_append normalize <plus_n_Sm @le_S_S // ] #LT_prefix_instr_list |
---|
945 | cut (|prefix| < 2^16) |
---|
946 | [ @(lt_to_le_to_lt … (|instr_list|)) assumption ] #prefix_ok |
---|
947 | cut (nat_of_bitvector … ppc < |instr_list|) |
---|
948 | [ >IH1 >nat_of_bitvector_bitvector_of_nat_inverse assumption ] #ppc_ok |
---|
949 | cut (\snd hd = \fst (fetch_pseudo_instruction instr_list ppc ppc_ok)) |
---|
950 | [ >prf in ppc_ok; >IH1 >(add_zero … (bitvector_of_nat … (|prefix|))) |
---|
951 | >fetch_pseudo_instruction_append |
---|
952 | [ #ppc_ok whd in match fetch_pseudo_instruction; normalize nodelta |
---|
953 | whd in match (nth_safe ????); [ cases hd // | normalize // ] |
---|
954 | | <add_zero >nat_of_bitvector_bitvector_of_nat_inverse |
---|
955 | [ <prf assumption | assumption ] |
---|
956 | | skip |
---|
957 | | <prf assumption |
---|
958 | ]] #eq_fetch_pseudo_instruction |
---|
959 | lapply (fst_snd_assembly_1_pseudoinstruction … p2) #EQpc_delta |
---|
960 | cut (pc_delta < 2^16) |
---|
961 | [ >EQpc_delta |
---|
962 | @(eq_ind ?? (λp.λ_. |\snd p| < 2^16) ?? p2) |
---|
963 | @assembly1_pseudoinstruction_lt_2_to_16 ] #pc_delta_ok |
---|
964 | cut (pc_delta = instruction_size lookup_labels sigma policy ppc (\snd hd)) |
---|
965 | [ whd in match instruction_size; normalize nodelta |
---|
966 | >fst_assembly_1_pseudoinstruction_insensible_to_lookup_datalabels [ >p2 | skip] % ] |
---|
967 | #EQpc_delta2 |
---|
968 | cases (sigma_pol_ok2 … ppc_ok) |
---|
969 | <eq_fetch_pseudo_instruction <eq_create_label_cost_map <EQpc_delta2 |
---|
970 | #sigma_pol3 #sigma_pol4 |
---|
971 | % [ % [% [% ] ] ] |
---|
972 | [ >length_append normalize nodelta >IH1 @sym_eq @add_bitvector_of_nat |
---|
973 | | >length_append >length_reverse <EQpc_delta |
---|
974 | cases IH3 -IH3 |
---|
975 | [ #IH3 <IH3 >commutative_plus |
---|
976 | cases sigma_pol4 [ #LT @(transitive_le … LT) // | * #_ #EQ >EQ % ] |
---|
977 | | * * #IH3a #IH3b #IH3c >IH3b <EQpc_delta >EQpc_delta2 >eq_fetch_pseudo_instruction |
---|
978 | >IH3c try % assumption ] |
---|
979 | | % (*CSC: Stupid proof of True, drop fake invariant *) |
---|
980 | | >length_append >length_reverse |
---|
981 | cases IH3 -IH3 |
---|
982 | [ #IH3 <IH3 <EQpc_delta cases sigma_pol4 |
---|
983 | [ #LT %1 >sigma_pol3 >nat_of_bitvector_add |
---|
984 | [2: >nat_of_bitvector_bitvector_of_nat_inverse assumption] |
---|
985 | >nat_of_bitvector_bitvector_of_nat_inverse try assumption // |
---|
986 | | * #EQ1 #EQ2 %2 % |
---|
987 | [ lapply (eq_f … (bitvector_of_nat 16) … EQ2) <add_bitvector_of_nat_plus |
---|
988 | >bitvector_of_nat_inverse_nat_of_bitvector <sigma_pol3 #X >X % // |
---|
989 | | #LLT_prefix |
---|
990 | cut (S (nat_of_bitvector … ppc) < 2^16) |
---|
991 | [ >length_append in LLT_prefix; <plus_n_Sm <plus_n_O #LLT_prefix |
---|
992 | >IH1 >nat_of_bitvector_bitvector_of_nat_inverse assumption ] |
---|
993 | -LLT_prefix #LLT_prefix |
---|
994 | #ppc' #ppc_ok' #LEQ_newppc_ppc' whd >EQ1 try % |
---|
995 | @(lt_to_le_to_lt … LEQ_newppc_ppc') normalize nodelta |
---|
996 | >nat_of_bitvector_add >nat_of_bitvector_bitvector_of_nat_inverse // ]] |
---|
997 | | * * #IH5 #IH6 #IH7 %2 % [% ] |
---|
998 | [ normalize nodelta >sigma_pol3 >IH5 |
---|
999 | >add_commutative <add_zero >nat_of_bitvector_bitvector_of_nat_inverse try assumption |
---|
1000 | >EQpc_delta2 >eq_fetch_pseudo_instruction >IH7 try % assumption |
---|
1001 | | >IH6 <EQpc_delta >EQpc_delta2 >eq_fetch_pseudo_instruction >IH7 try % |
---|
1002 | assumption |
---|
1003 | | #LLT_prefix |
---|
1004 | cut (S (nat_of_bitvector … ppc) < 2^16) |
---|
1005 | [ >length_append in LLT_prefix; <plus_n_Sm <plus_n_O #LLT_prefix |
---|
1006 | >IH1 >nat_of_bitvector_bitvector_of_nat_inverse assumption ] |
---|
1007 | -LLT_prefix #LLT_prefix |
---|
1008 | #ppc' #ppc_ok' #LEQ_newppc_ppc' whd @IH7 try assumption |
---|
1009 | @(transitive_le … LEQ_newppc_ppc') normalize nodelta |
---|
1010 | >nat_of_bitvector_add >nat_of_bitvector_bitvector_of_nat_inverse // ]] |
---|
1011 | | #ppc' #LTppc' cases hd in prf p2 EQpc_delta2 eq_fetch_pseudo_instruction; #label #pi #prf #p2 |
---|
1012 | #EQpc_delta2 #eq_fetch_pseudo_instruction #OR_lt_eq |
---|
1013 | cut (ppc' = ppc ∨ ppc' ≠ ppc) [cases daemon (*CSC: True*)] * |
---|
1014 | [ #EQppc' >EQppc' in LTppc'; -ppc' >prf |
---|
1015 | >IH1 #LTppc lapply LTppc |
---|
1016 | >(add_zero … (bitvector_of_nat 16 (|prefix|))) in ⊢ (% → match % with [_ ⇒ ?]); |
---|
1017 | >fetch_pseudo_instruction_append |
---|
1018 | [3: @le_S_S @le_O_n |
---|
1019 | |2: lapply LTppc; >(add_zero … (bitvector_of_nat 16 (|prefix|))) in ⊢ (% → ?); #H @H |
---|
1020 | |4: <prf <p_refl in instr_list_ok; #H @H ] |
---|
1021 | #LTppc' @pair_elim #pi' #newppc' #EQpair destruct(EQpair) <IH1 >p2 % |
---|
1022 | [ >length_reverse >length_append >length_reverse // ] |
---|
1023 | #j #LTj >nat_of_bitvector_add |
---|
1024 | >nat_of_bitvector_bitvector_of_nat_inverse |
---|
1025 | [2,4: @(lt_to_le_to_lt … LTj) <EQpc_delta @(transitive_le … pc_delta_ok) %2 % |
---|
1026 | |3: @(lt_to_le_to_lt … (nat_of_bitvector … (sigma ppc) + pc_delta)) |
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1027 | [ >EQpc_delta @monotonic_lt_plus_r assumption |
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1028 | | cases sigma_pol4 |
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1029 | [ #H @(transitive_le … H) %2 % |
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1030 | | * #_ #EQ >EQ % ]]] |
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1031 | >reverse_append >reverse_reverse |
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1032 | cases IH3 -IH3 |
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1033 | [ #IH3 >IH3 <(length_reverse … code) @nth_safe_prepend |
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1034 | | * * #IH3a #IH3b #IH3c >IH3a @⊥ |
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1035 | cut (|program| = 0) |
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1036 | [ <EQpc_delta >EQpc_delta2 >eq_fetch_pseudo_instruction @IH3c // ] #EQprogram |
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1037 | @(absurd ?? (not_le_Sn_O j)) <EQprogram assumption ] |
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1038 | | #NEQppc' |
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1039 | lapply (IH4 … LTppc') |
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1040 | @pair_elim #pi' #newppc' #eq_fetch_pseudoinstruction |
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1041 | @pair_elim #len' #assembledi' #eq_assembly_1_pseudoinstruction #IH |
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1042 | cases (IH ?) -IH |
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1043 | [2: %1 cases OR_lt_eq |
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1044 | [ normalize nodelta #LT lapply LT >nat_of_bitvector_add |
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1045 | [2: >nat_of_bitvector_bitvector_of_nat_inverse [2: //] |
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1046 | cases (le_to_or_lt_eq … (? : nat_of_bitvector … ppc < 2^16)) |
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1047 | [ #X <plus_n_Sm <plus_n_O @X |
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1048 | | #abs @⊥ |
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1049 | <(bitvector_of_nat_inverse_nat_of_bitvector … ppc) in LT; |
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1050 | >add_overflow [2: <plus_n_Sm <plus_n_O assumption ] |
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1051 | #abs' @(absurd … abs') normalize in ⊢ (? (??%)); |
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1052 | @not_le_Sn_O |
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1053 | | @(lt_to_le_to_lt … ppc_ok) assumption ]] |
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1054 | >nat_of_bitvector_bitvector_of_nat_inverse [2: // ] |
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1055 | <plus_n_Sm <plus_n_O #X lapply (le_S_S_to_le … X) -X #X |
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1056 | cases (le_to_or_lt_eq … X) [//] #abs @⊥ |
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1057 | lapply (eq_f … (bitvector_of_nat 16) … abs) |
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1058 | >bitvector_of_nat_inverse_nat_of_bitvector |
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1059 | >bitvector_of_nat_inverse_nat_of_bitvector #EQ |
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1060 | @(absurd … EQ NEQppc') |
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1061 | | >length_append <plus_n_Sm <plus_n_O #EQ @le_S_S_to_le >IH1 |
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1062 | >nat_of_bitvector_bitvector_of_nat_inverse try assumption |
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1063 | cases (le_to_or_lt_eq … (lt_nat_of_bitvector 16 ppc')) [#X >EQ @X] |
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1064 | #abs @⊥ <EQ in abs; #X lapply (injective_S … X) #abs |
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1065 | lapply (eq_f … (bitvector_of_nat 16) … abs) |
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1066 | >bitvector_of_nat_inverse_nat_of_bitvector <IH1 #EQ |
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1067 | @(absurd … EQ NEQppc') ]] |
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1068 | #IH6 #IH |
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1069 | change with (let 〈len,assembledi〉 ≝ assembly_1_pseudoinstruction ????? pi' in ? ∧ ∀j:ℕ. ∀H:j<|assembledi|.?) |
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1070 | >eq_assembly_1_pseudoinstruction % |
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1071 | [ >reverse_append >length_append |
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1072 | >(fst_snd_assembly_1_pseudoinstruction … eq_assembly_1_pseudoinstruction) |
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1073 | @(transitive_le … IH6) // |
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1074 | | #j #LTj >reverse_append >reverse_reverse #K |
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1075 | >IH |
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1076 | [2: >length_reverse (*CSC: ?????????? <IH3 (*CSC: USE MONOTONICITY *)*) cases daemon |
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1077 | | @shift_nth_prefix ]]]]] |
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1078 | qed. |
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1079 | |
---|
1080 | definition assembly_unlabelled_program: |
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1081 | assembly_program → option (list Byte × (BitVectorTrie Identifier 16)) ≝ |
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1082 | λp. |
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1083 | Some … (〈foldr … (λi,l. assembly1 i @ l) [ ] p, Stub …〉). |
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