[719] | 1 | include "ASM/ASM.ma". |
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| 2 | include "ASM/BitVectorTrie.ma". |
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| 3 | include "ASM/Arithmetic.ma". |
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| 4 | include "ASM/Fetch.ma". |
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| 5 | include "ASM/Status.ma". |
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| 6 | |
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[820] | 7 | definition assembly_preinstruction ≝ |
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| 8 | λA: Type[0]. |
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| 9 | λaddr_of: A → Byte. (* relative *) |
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| 10 | λpre: preinstruction A. |
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| 11 | match pre with |
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| 12 | [ ADD addr1 addr2 ⇒ |
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[757] | 13 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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[719] | 14 | [ REGISTER r ⇒ λ_.[ ([[false;false;true;false;true]]) @@ r ] |
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| 15 | | DIRECT b1 ⇒ λ_.[ ([[false;false;true;false;false;true;false;true]]); b1 ] |
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| 16 | | INDIRECT i1 ⇒ λ_. [ ([[false;false;true;false;false;true;true;i1]]) ] |
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| 17 | | DATA b1 ⇒ λ_. [ ([[false;false;true;false;false;true;false;false]]) ; b1 ] |
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| 18 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 19 | | ADDC addr1 addr2 ⇒ |
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[757] | 20 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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[719] | 21 | [ REGISTER r ⇒ λ_.[ ([[false;false;true;true;true]]) @@ r ] |
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| 22 | | DIRECT b1 ⇒ λ_.[ ([[false;false;true;true;false;true;false;true]]); b1 ] |
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| 23 | | INDIRECT i1 ⇒ λ_. [ ([[false;false;true;true;false;true;true;i1]]) ] |
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| 24 | | DATA b1 ⇒ λ_. [ ([[false;false;true;true;false;true;false;false]]) ; b1 ] |
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| 25 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 26 | | ANL addrs ⇒ |
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| 27 | match addrs with |
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| 28 | [ inl addrs ⇒ match addrs with |
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| 29 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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[757] | 30 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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[719] | 31 | [ REGISTER r ⇒ λ_.[ ([[false;true;false;true;true]]) @@ r ] |
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| 32 | | DIRECT b1 ⇒ λ_.[ ([[false;true;false;true;false;true;false;true]]); b1 ] |
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| 33 | | INDIRECT i1 ⇒ λ_. [ ([[false;true;false;true;false;true;true;i1]]) ] |
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| 34 | | DATA b1 ⇒ λ_. [ ([[false;true;false;true;false;true;false;false]]) ; b1 ] |
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| 35 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 36 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 37 | let b1 ≝ |
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| 38 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 39 | [ DIRECT b1 ⇒ λ_.b1 |
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| 40 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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| 41 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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| 42 | [ ACC_A ⇒ λ_.[ ([[false;true;false;true;false;false;true;false]]) ; b1 ] |
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| 43 | | DATA b2 ⇒ λ_. [ ([[false;true;false;true;false;false;true;true]]) ; b1 ; b2 ] |
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| 44 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 45 | ] |
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| 46 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 47 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr;n_bit_addr]] x) → ? with |
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| 48 | [ BIT_ADDR b1 ⇒ λ_.[ ([[true;false;false;false;false;false;true;false]]) ; b1 ] |
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| 49 | | N_BIT_ADDR b1 ⇒ λ_. [ ([[true;false;true;true;false;false;false;false]]) ; b1 ] |
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| 50 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 51 | | CLR addr ⇒ |
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| 52 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;carry;bit_addr]] x) → ? with |
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| 53 | [ ACC_A ⇒ λ_. |
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| 54 | [ ([[true; true; true; false; false; true; false; false]]) ] |
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| 55 | | CARRY ⇒ λ_. |
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| 56 | [ ([[true; true; false; false; false; false; true; true]]) ] |
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| 57 | | BIT_ADDR b1 ⇒ λ_. |
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| 58 | [ ([[true; true; false; false; false; false; true; false]]) ; b1 ] |
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| 59 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 60 | | CPL addr ⇒ |
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| 61 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;carry;bit_addr]] x) → ? with |
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| 62 | [ ACC_A ⇒ λ_. |
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| 63 | [ ([[true; true; true; true; false; true; false; false]]) ] |
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| 64 | | CARRY ⇒ λ_. |
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| 65 | [ ([[true; false; true; true; false; false; true; true]]) ] |
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| 66 | | BIT_ADDR b1 ⇒ λ_. |
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| 67 | [ ([[true; false; true; true; false; false; true; false]]) ; b1 ] |
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| 68 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 69 | | DA addr ⇒ |
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| 70 | [ ([[true; true; false; true; false; true; false; false]]) ] |
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| 71 | | DEC addr ⇒ |
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[757] | 72 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect]] x) → ? with |
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[719] | 73 | [ ACC_A ⇒ λ_. |
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| 74 | [ ([[false; false; false; true; false; true; false; false]]) ] |
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| 75 | | REGISTER r ⇒ λ_. |
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| 76 | [ ([[false; false; false; true; true]]) @@ r ] |
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| 77 | | DIRECT b1 ⇒ λ_. |
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| 78 | [ ([[false; false; false; true; false; true; false; true]]); b1 ] |
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| 79 | | INDIRECT i1 ⇒ λ_. |
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| 80 | [ ([[false; false; false; true; false; true; true; i1]]) ] |
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| 81 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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[820] | 82 | | DJNZ addr1 addr2 ⇒ |
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| 83 | let b2 ≝ addr_of addr2 in |
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[757] | 84 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;direct]] x) → ? with |
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[719] | 85 | [ REGISTER r ⇒ λ_. |
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| 86 | [ ([[true; true; false; true; true]]) @@ r ; b2 ] |
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| 87 | | DIRECT b1 ⇒ λ_. |
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| 88 | [ ([[true; true; false; true; false; true; false; true]]); b1; b2 ] |
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| 89 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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| 90 | | JC addr ⇒ |
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[820] | 91 | let b1 ≝ addr_of addr in |
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| 92 | [ ([[false; true; false; false; false; false; false; false]]); b1 ] |
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[719] | 93 | | JNC addr ⇒ |
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[820] | 94 | let b1 ≝ addr_of addr in |
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| 95 | [ ([[false; true; false; true; false; false; false; false]]); b1 ] |
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[719] | 96 | | JZ addr ⇒ |
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[820] | 97 | let b1 ≝ addr_of addr in |
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| 98 | [ ([[false; true; true; false; false; false; false; false]]); b1 ] |
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[719] | 99 | | JNZ addr ⇒ |
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[820] | 100 | let b1 ≝ addr_of addr in |
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| 101 | [ ([[false; true; true; true; false; false; false; false]]); b1 ] |
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[719] | 102 | | JB addr1 addr2 ⇒ |
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[820] | 103 | let b2 ≝ addr_of addr2 in |
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[719] | 104 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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| 105 | [ BIT_ADDR b1 ⇒ λ_. |
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| 106 | [ ([[false; false; true; false; false; false; false; false]]); b1; b2 ] |
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| 107 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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| 108 | | JNB addr1 addr2 ⇒ |
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[820] | 109 | let b2 ≝ addr_of addr2 in |
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[719] | 110 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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| 111 | [ BIT_ADDR b1 ⇒ λ_. |
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| 112 | [ ([[false; false; true; true; false; false; false; false]]); b1; b2 ] |
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| 113 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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| 114 | | JBC addr1 addr2 ⇒ |
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[820] | 115 | let b2 ≝ addr_of addr2 in |
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[719] | 116 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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| 117 | [ BIT_ADDR b1 ⇒ λ_. |
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| 118 | [ ([[false; false; false; true; false; false; false; false]]); b1; b2 ] |
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| 119 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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| 120 | | CJNE addrs addr3 ⇒ |
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[820] | 121 | let b3 ≝ addr_of addr3 in |
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[719] | 122 | match addrs with |
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| 123 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 124 | match addr2 return λx. bool_to_Prop (is_in ? [[direct;data]] x) → ? with |
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| 125 | [ DIRECT b1 ⇒ λ_. |
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| 126 | [ ([[true; false; true; true; false; true; false; true]]); b1; b3 ] |
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| 127 | | DATA b1 ⇒ λ_. |
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| 128 | [ ([[true; false; true; true; false; true; false; false]]); b1; b3 ] |
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| 129 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 130 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 131 | let b2 ≝ |
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| 132 | match addr2 return λx. bool_to_Prop (is_in ? [[data]] x) → ? with |
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| 133 | [ DATA b2 ⇒ λ_. b2 |
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| 134 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) in |
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[757] | 135 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;indirect]] x) → list Byte with |
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[820] | 136 | [ REGISTER r ⇒ λ_. |
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[719] | 137 | [ ([[true; false; true; true; true]]) @@ r; b2; b3 ] |
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| 138 | | INDIRECT i1 ⇒ λ_. |
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| 139 | [ ([[true; false; true; true; false; true; true; i1]]); b2; b3 ] |
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[820] | 140 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) |
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| 141 | ] |
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| 142 | | DIV addr1 addr2 ⇒ |
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| 143 | [ ([[true;false;false;false;false;true;false;false]]) ] |
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[719] | 144 | | INC addr ⇒ |
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[757] | 145 | match addr return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect;dptr]] x) → ? with |
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[719] | 146 | [ ACC_A ⇒ λ_. |
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| 147 | [ ([[false;false;false;false;false;true;false;false]]) ] |
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| 148 | | REGISTER r ⇒ λ_. |
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| 149 | [ ([[false;false;false;false;true]]) @@ r ] |
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| 150 | | DIRECT b1 ⇒ λ_. |
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| 151 | [ ([[false; false; false; false; false; true; false; true]]); b1 ] |
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| 152 | | INDIRECT i1 ⇒ λ_. |
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| 153 | [ ([[false; false; false; false; false; true; true; i1]]) ] |
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| 154 | | DPTR ⇒ λ_. |
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| 155 | [ ([[true;false;true;false;false;false;true;true]]) ] |
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| 156 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 157 | | MOV addrs ⇒ |
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| 158 | match addrs with |
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| 159 | [ inl addrs ⇒ |
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| 160 | match addrs with |
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| 161 | [ inl addrs ⇒ |
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| 162 | match addrs with |
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| 163 | [ inl addrs ⇒ |
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| 164 | match addrs with |
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| 165 | [ inl addrs ⇒ |
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| 166 | match addrs with |
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| 167 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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[757] | 168 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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[719] | 169 | [ REGISTER r ⇒ λ_.[ ([[true;true;true;false;true]]) @@ r ] |
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| 170 | | DIRECT b1 ⇒ λ_.[ ([[true;true;true;false;false;true;false;true]]); b1 ] |
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| 171 | | INDIRECT i1 ⇒ λ_. [ ([[true;true;true;false;false;true;true;i1]]) ] |
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| 172 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;false;true;false;false]]) ; b1 ] |
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| 173 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 174 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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[757] | 175 | match addr1 return λx. bool_to_Prop (is_in ? [[registr;indirect]] x) → ? with |
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[719] | 176 | [ REGISTER r ⇒ λ_. |
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| 177 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;direct;data]] x) → ? with |
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| 178 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;true]]) @@ r ] |
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| 179 | | DIRECT b1 ⇒ λ_.[ ([[true;false;true;false;true]]) @@ r; b1 ] |
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| 180 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;true]]) @@ r; b1 ] |
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| 181 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 182 | | INDIRECT i1 ⇒ λ_. |
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| 183 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;direct;data]] x) → ? with |
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| 184 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;false;true;true;i1]]) ] |
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| 185 | | DIRECT b1 ⇒ λ_.[ ([[true;false;true;false;false;true;true;i1]]); b1 ] |
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| 186 | | DATA b1 ⇒ λ_. [ ([[false;true;true;true;false;true;true;i1]]) ; b1 ] |
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| 187 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 188 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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| 189 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 190 | let b1 ≝ |
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| 191 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 192 | [ DIRECT b1 ⇒ λ_. b1 |
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| 193 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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[757] | 194 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;registr;direct;indirect;data]] x) → ? with |
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[719] | 195 | [ ACC_A ⇒ λ_.[ ([[true;true;true;true;false;true;false;true]]); b1] |
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| 196 | | REGISTER r ⇒ λ_.[ ([[true;false;false;false;true]]) @@ r; b1 ] |
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| 197 | | DIRECT b2 ⇒ λ_.[ ([[true;false;false;false;false;true;false;true]]); b1; b2 ] |
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| 198 | | INDIRECT i1 ⇒ λ_. [ ([[true;false;false;false;false;true;true;i1]]); b1 ] |
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| 199 | | DATA b2 ⇒ λ_. [ ([[false;true;true;true;false;true;false;true]]); b1; b2 ] |
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| 200 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 201 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 202 | match addr2 return λx. bool_to_Prop (is_in ? [[data16]] x) → ? with |
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| 203 | [ DATA16 w ⇒ λ_. |
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[938] | 204 | let b1_b2 ≝ split ? 8 8 w in |
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| 205 | let b1 ≝ \fst b1_b2 in |
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[1040] | 206 | let b2 ≝ \snd b1_b2 in |
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[719] | 207 | [ ([[true;false;false;true;false;false;false;false]]); b1; b2] |
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| 208 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 209 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 210 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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| 211 | [ BIT_ADDR b1 ⇒ λ_. |
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| 212 | [ ([[true;false;true;false;false;false;true;false]]); b1 ] |
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| 213 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 214 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 215 | match addr1 return λx. bool_to_Prop (is_in ? [[bit_addr]] x) → ? with |
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| 216 | [ BIT_ADDR b1 ⇒ λ_. |
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| 217 | [ ([[true;false;false;true;false;false;true;false]]); b1 ] |
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| 218 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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| 219 | | MOVX addrs ⇒ |
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| 220 | match addrs with |
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| 221 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 222 | match addr2 return λx. bool_to_Prop (is_in ? [[ext_indirect;ext_indirect_dptr]] x) → ? with |
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| 223 | [ EXT_INDIRECT i1 ⇒ λ_. |
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| 224 | [ ([[true;true;true;false;false;false;true;i1]]) ] |
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| 225 | | EXT_INDIRECT_DPTR ⇒ λ_. |
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| 226 | [ ([[true;true;true;false;false;false;false;false]]) ] |
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| 227 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 228 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 229 | match addr1 return λx. bool_to_Prop (is_in ? [[ext_indirect;ext_indirect_dptr]] x) → ? with |
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| 230 | [ EXT_INDIRECT i1 ⇒ λ_. |
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| 231 | [ ([[true;true;true;true;false;false;true;i1]]) ] |
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| 232 | | EXT_INDIRECT_DPTR ⇒ λ_. |
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| 233 | [ ([[true;true;true;true;false;false;false;false]]) ] |
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| 234 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1)] |
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| 235 | | MUL addr1 addr2 ⇒ |
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| 236 | [ ([[true;false;true;false;false;true;false;false]]) ] |
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| 237 | | NOP ⇒ |
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| 238 | [ ([[false;false;false;false;false;false;false;false]]) ] |
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| 239 | | ORL addrs ⇒ |
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| 240 | match addrs with |
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| 241 | [ inl addrs ⇒ |
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| 242 | match addrs with |
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| 243 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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[757] | 244 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;data;direct;indirect]] x) → ? with |
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[719] | 245 | [ REGISTER r ⇒ λ_.[ ([[false;true;false;false;true]]) @@ r ] |
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| 246 | | DIRECT b1 ⇒ λ_.[ ([[false;true;false;false;false;true;false;true]]); b1 ] |
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| 247 | | INDIRECT i1 ⇒ λ_. [ ([[false;true;false;false;false;true;true;i1]]) ] |
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| 248 | | DATA b1 ⇒ λ_. [ ([[false;true;false;false;false;true;false;false]]) ; b1 ] |
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| 249 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 250 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 251 | let b1 ≝ |
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| 252 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 253 | [ DIRECT b1 ⇒ λ_. b1 |
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| 254 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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| 255 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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| 256 | [ ACC_A ⇒ λ_. |
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| 257 | [ ([[false;true;false;false;false;false;true;false]]); b1 ] |
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| 258 | | DATA b2 ⇒ λ_. |
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| 259 | [ ([[false;true;false;false;false;false;true;true]]); b1; b2 ] |
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| 260 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 261 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 262 | match addr2 return λx. bool_to_Prop (is_in ? [[bit_addr;n_bit_addr]] x) → ? with |
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| 263 | [ BIT_ADDR b1 ⇒ λ_. |
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| 264 | [ ([[false;true;true;true;false;false;true;false]]); b1 ] |
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| 265 | | N_BIT_ADDR b1 ⇒ λ_. |
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| 266 | [ ([[true;false;true;false;false;false;false;false]]); b1 ] |
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| 267 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 268 | | POP addr ⇒ |
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| 269 | match addr return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 270 | [ DIRECT b1 ⇒ λ_. |
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| 271 | [ ([[true;true;false;true;false;false;false;false]]) ; b1 ] |
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| 272 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 273 | | PUSH addr ⇒ |
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| 274 | match addr return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 275 | [ DIRECT b1 ⇒ λ_. |
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| 276 | [ ([[true;true;false;false;false;false;false;false]]) ; b1 ] |
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| 277 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 278 | | RET ⇒ |
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| 279 | [ ([[false;false;true;false;false;false;true;false]]) ] |
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| 280 | | RETI ⇒ |
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| 281 | [ ([[false;false;true;true;false;false;true;false]]) ] |
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| 282 | | RL addr ⇒ |
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| 283 | [ ([[false;false;true;false;false;false;true;true]]) ] |
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| 284 | | RLC addr ⇒ |
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| 285 | [ ([[false;false;true;true;false;false;true;true]]) ] |
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| 286 | | RR addr ⇒ |
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| 287 | [ ([[false;false;false;false;false;false;true;true]]) ] |
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| 288 | | RRC addr ⇒ |
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| 289 | [ ([[false;false;false;true;false;false;true;true]]) ] |
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| 290 | | SETB addr ⇒ |
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| 291 | match addr return λx. bool_to_Prop (is_in ? [[carry;bit_addr]] x) → ? with |
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| 292 | [ CARRY ⇒ λ_. |
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| 293 | [ ([[true;true;false;true;false;false;true;true]]) ] |
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| 294 | | BIT_ADDR b1 ⇒ λ_. |
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| 295 | [ ([[true;true;false;true;false;false;true;false]]); b1 ] |
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| 296 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 297 | | SUBB addr1 addr2 ⇒ |
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[757] | 298 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect;data]] x) → ? with |
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[719] | 299 | [ REGISTER r ⇒ λ_. |
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| 300 | [ ([[true;false;false;true;true]]) @@ r ] |
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| 301 | | DIRECT b1 ⇒ λ_. |
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| 302 | [ ([[true;false;false;true;false;true;false;true]]); b1] |
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| 303 | | INDIRECT i1 ⇒ λ_. |
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| 304 | [ ([[true;false;false;true;false;true;true;i1]]) ] |
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| 305 | | DATA b1 ⇒ λ_. |
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| 306 | [ ([[true;false;false;true;false;true;false;false]]); b1] |
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| 307 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 308 | | SWAP addr ⇒ |
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| 309 | [ ([[true;true;false;false;false;true;false;false]]) ] |
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| 310 | | XCH addr1 addr2 ⇒ |
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[757] | 311 | match addr2 return λx. bool_to_Prop (is_in ? [[registr;direct;indirect]] x) → ? with |
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[719] | 312 | [ REGISTER r ⇒ λ_. |
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| 313 | [ ([[true;true;false;false;true]]) @@ r ] |
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| 314 | | DIRECT b1 ⇒ λ_. |
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| 315 | [ ([[true;true;false;false;false;true;false;true]]); b1] |
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| 316 | | INDIRECT i1 ⇒ λ_. |
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| 317 | [ ([[true;true;false;false;false;true;true;i1]]) ] |
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| 318 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 319 | | XCHD addr1 addr2 ⇒ |
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| 320 | match addr2 return λx. bool_to_Prop (is_in ? [[indirect]] x) → ? with |
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| 321 | [ INDIRECT i1 ⇒ λ_. |
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| 322 | [ ([[true;true;false;true;false;true;true;i1]]) ] |
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| 323 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 324 | | XRL addrs ⇒ |
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| 325 | match addrs with |
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| 326 | [ inl addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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[757] | 327 | match addr2 return λx. bool_to_Prop (is_in ? [[data;registr;direct;indirect]] x) → ? with |
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[719] | 328 | [ REGISTER r ⇒ λ_. |
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| 329 | [ ([[false;true;true;false;true]]) @@ r ] |
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| 330 | | DIRECT b1 ⇒ λ_. |
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| 331 | [ ([[false;true;true;false;false;true;false;true]]); b1] |
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| 332 | | INDIRECT i1 ⇒ λ_. |
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| 333 | [ ([[false;true;true;false;false;true;true;i1]]) ] |
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| 334 | | DATA b1 ⇒ λ_. |
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| 335 | [ ([[false;true;true;false;false;true;false;false]]); b1] |
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| 336 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 337 | | inr addrs ⇒ let 〈addr1,addr2〉 ≝ addrs in |
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| 338 | let b1 ≝ |
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| 339 | match addr1 return λx. bool_to_Prop (is_in ? [[direct]] x) → ? with |
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| 340 | [ DIRECT b1 ⇒ λ_. b1 |
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| 341 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr1) in |
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| 342 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_a;data]] x) → ? with |
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| 343 | [ ACC_A ⇒ λ_. |
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| 344 | [ ([[false;true;true;false;false;false;true;false]]); b1 ] |
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| 345 | | DATA b2 ⇒ λ_. |
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| 346 | [ ([[false;true;true;false;false;false;true;true]]); b1; b2 ] |
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[820] | 347 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2)] |
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| 348 | ]. |
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[719] | 349 | |
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[820] | 350 | definition assembly1 ≝ |
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| 351 | λi: instruction. |
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| 352 | match i with |
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| 353 | [ ACALL addr ⇒ |
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| 354 | match addr return λx. bool_to_Prop (is_in ? [[addr11]] x) → ? with |
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| 355 | [ ADDR11 w ⇒ λ_. |
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[938] | 356 | let v1_v2 ≝ split ? 3 8 w in |
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| 357 | let v1 ≝ \fst v1_v2 in |
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| 358 | let v2 ≝ \snd v1_v2 in |
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[820] | 359 | [ (v1 @@ [[true; false; false; false; true]]) ; v2 ] |
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| 360 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 361 | | AJMP addr ⇒ |
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| 362 | match addr return λx. bool_to_Prop (is_in ? [[addr11]] x) → ? with |
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| 363 | [ ADDR11 w ⇒ λ_. |
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[938] | 364 | let v1_v2 ≝ split ? 3 8 w in |
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| 365 | let v1 ≝ \fst v1_v2 in |
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| 366 | let v2 ≝ \snd v1_v2 in |
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[820] | 367 | [ (v1 @@ [[false; false; false; false; true]]) ; v2 ] |
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| 368 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 369 | | JMP adptr ⇒ |
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| 370 | [ ([[false;true;true;true;false;false;true;true]]) ] |
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| 371 | | LCALL addr ⇒ |
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| 372 | match addr return λx. bool_to_Prop (is_in ? [[addr16]] x) → ? with |
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| 373 | [ ADDR16 w ⇒ λ_. |
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[938] | 374 | let b1_b2 ≝ split ? 8 8 w in |
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| 375 | let b1 ≝ \fst b1_b2 in |
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| 376 | let b2 ≝ \snd b1_b2 in |
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[820] | 377 | [ ([[false;false;false;true;false;false;true;false]]); b1; b2 ] |
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| 378 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 379 | | LJMP addr ⇒ |
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| 380 | match addr return λx. bool_to_Prop (is_in ? [[addr16]] x) → ? with |
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| 381 | [ ADDR16 w ⇒ λ_. |
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[938] | 382 | let b1_b2 ≝ split ? 8 8 w in |
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| 383 | let b1 ≝ \fst b1_b2 in |
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| 384 | let b2 ≝ \snd b1_b2 in |
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[820] | 385 | [ ([[false;false;false;false;false;false;true;false]]); b1; b2 ] |
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| 386 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 387 | | MOVC addr1 addr2 ⇒ |
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| 388 | match addr2 return λx. bool_to_Prop (is_in ? [[acc_dptr;acc_pc]] x) → ? with |
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| 389 | [ ACC_DPTR ⇒ λ_. |
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| 390 | [ ([[true;false;false;true;false;false;true;true]]) ] |
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| 391 | | ACC_PC ⇒ λ_. |
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| 392 | [ ([[true;false;false;false;false;false;true;true]]) ] |
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| 393 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr2) |
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| 394 | | SJMP addr ⇒ |
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| 395 | match addr return λx. bool_to_Prop (is_in ? [[relative]] x) → ? with |
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| 396 | [ RELATIVE b1 ⇒ λ_. |
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| 397 | [ ([[true;false;false;false;false;false;false;false]]); b1 ] |
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| 398 | | _ ⇒ λK.match K in False with [ ] ] (subaddressing_modein … addr) |
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| 399 | | RealInstruction instr ⇒ |
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| 400 | assembly_preinstruction [[ relative ]] |
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| 401 | (λx. |
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| 402 | match x return λs. bool_to_Prop (is_in ? [[ relative ]] s) → ? with |
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| 403 | [ RELATIVE r ⇒ λ_. r |
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| 404 | | _ ⇒ λabsd. ⊥ |
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| 405 | ] (subaddressing_modein … x)) instr |
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| 406 | ]. |
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| 407 | cases absd |
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| 408 | qed. |
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| 409 | |
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[842] | 410 | definition is_relative_jump ≝ |
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| 411 | λi: preinstruction Identifier. |
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| 412 | match i with |
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| 413 | [ JC _ ⇒ True |
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| 414 | | JNC _ ⇒ True |
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| 415 | | JB _ _ ⇒ True |
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| 416 | | JNB _ _ ⇒ True |
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| 417 | | JBC _ _ ⇒ True |
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| 418 | | JZ _ ⇒ True |
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| 419 | | JNZ _ ⇒ True |
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| 420 | | CJNE _ _ ⇒ True |
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| 421 | | DJNZ _ _ ⇒ True |
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| 422 | | _ ⇒ False |
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| 423 | ]. |
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[719] | 424 | |
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[842] | 425 | definition pseudo_instruction_is_relative_jump: pseudo_instruction → Prop ≝ |
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| 426 | λi. |
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| 427 | match i with |
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| 428 | [ Instruction j ⇒ is_relative_jump j |
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| 429 | | _ ⇒ False ]. |
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| 430 | |
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[832] | 431 | inductive jump_length: Type[0] ≝ |
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| 432 | | short_jump: jump_length |
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| 433 | | medium_jump: jump_length |
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| 434 | | long_jump: jump_length. |
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| 435 | |
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[1054] | 436 | definition find_right_call: Word → Word → (nat × nat) × (Word × (option jump_length)) ≝ |
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[907] | 437 | (* medium call: 11 bits, only in "current segment" *) |
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| 438 | (* can this be done more efficiently with bit vector arithmetic? *) |
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| 439 | λpc.λaddress. |
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[1054] | 440 | let 〈a1, a2〉 ≝ split ? 5 11 address in |
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| 441 | let 〈p1, p2〉 ≝ split ? 5 11 pc in |
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| 442 | if eq_bv ? a1 p1 then (* we're in the same segment *) |
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[1109] | 443 | 〈2, 2, address, Some ? medium_jump〉 |
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[907] | 444 | else |
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[1109] | 445 | 〈2, 3, address, Some ? long_jump〉. |
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[1054] | 446 | |
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[1109] | 447 | (* lemma frc_ok: |
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[1054] | 448 | ∀pc.∀j_addr. |
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| 449 | let 〈i1,i2,addr,jl〉 ≝ find_right_call pc j_addr in |
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| 450 | addr = j_addr ∧ |
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| 451 | match jl with |
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| 452 | [ None ⇒ False (* doesn't happen *) |
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| 453 | | Some j ⇒ match j with |
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| 454 | [ short_jump ⇒ False (* doesn't happen either *) |
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| 455 | | medium_jump ⇒ \fst (split ? 5 11 j_addr) = \fst (split ? 5 11 pc) |
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| 456 | | long_jump ⇒ True |
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| 457 | ] |
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| 458 | ]. |
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| 459 | #pc #j_addr whd in match (find_right_call pc j_addr) cases (split ????) cases (split ????) |
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| 460 | #p1 #p2 #a1 #a2 normalize nodelta |
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| 461 | lapply (refl ? (eq_bv 5 a1 p1)) cases (eq_bv 5 a1 p1) in ⊢ (???% → %) #H normalize |
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| 462 | [ %1 [ @refl | @(eq_bv_eq … H) ] |
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| 463 | | %1 [ @refl | // ] ] |
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[1109] | 464 | qed. *) |
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[1054] | 465 | |
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[907] | 466 | definition distance ≝ |
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| 467 | λx.λy.if gtb x y then x - y else y - x. |
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| 468 | |
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[1054] | 469 | definition find_right_jump: Word → Word → (nat × nat) × (Word × (option jump_length)) ≝ |
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[907] | 470 | (* short jump: 8 bits signed *) |
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| 471 | (* medium jump: 11 bits, forward only *) |
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| 472 | λpc.λaddress. |
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| 473 | let pn ≝ nat_of_bitvector ? pc in |
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| 474 | let pa ≝ nat_of_bitvector ? address in |
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[914] | 475 | if ltb (distance pn pa) 127 then |
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[1109] | 476 | 〈2, 2, address, Some ? short_jump〉 |
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[907] | 477 | else |
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| 478 | find_right_call pc address. |
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| 479 | |
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[1109] | 480 | (* lemma frj_ok: |
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[1054] | 481 | ∀pc.∀j_addr. |
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| 482 | let 〈i1,i2,addr,jl〉 ≝ find_right_jump pc j_addr in |
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| 483 | addr = j_addr ∧ |
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| 484 | match jl with |
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| 485 | [ None ⇒ False (* doesn't happen *) |
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| 486 | | Some j ⇒ match j with |
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| 487 | [ short_jump ⇒ distance (nat_of_bitvector ? pc) (nat_of_bitvector ? j_addr) < 127 |
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| 488 | | medium_jump ⇒ \fst (split ? 5 11 j_addr) = \fst (split ? 5 11 pc) |
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| 489 | | long_jump ⇒ True |
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| 490 | ] |
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| 491 | ]. |
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| 492 | #pc #j_addr whd in match (find_right_jump pc j_addr) |
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| 493 | lapply (refl ? (ltb (distance (nat_of_bitvector 16 pc) (nat_of_bitvector 16 j_addr)) 127)) |
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| 494 | cases (ltb (distance (nat_of_bitvector 16 pc) (nat_of_bitvector 16 j_addr)) 127) in ⊢ (???% → %) #H |
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| 495 | normalize nodelta |
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| 496 | [ %1 [ @refl | whd @(leb_true_to_le … H) ] |
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| 497 | | lapply (frc_ok pc j_addr) cases (find_right_call ??) normalize nodelta #x #y cases x |
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| 498 | #i1 #i2 cases y #addr #jl normalize nodelta cases jl normalize |
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| 499 | [ // |
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| 500 | | #jl cases jl normalize |
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| 501 | [1: #f @⊥ @(proj2 ? ? f) |2,3: // ] |
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| 502 | ] |
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| 503 | ] |
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[1109] | 504 | qed. *) |
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[1054] | 505 | |
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| 506 | definition find_right_relative_jump: Word → (BitVectorTrie (Word × Identifier) 16) → |
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| 507 | Identifier → (nat × nat) × (Word × (option jump_length)) ≝ |
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[907] | 508 | λpc.λlabels.λjmp. |
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| 509 | match lookup_opt ? ? jmp labels with |
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[1109] | 510 | [ None ⇒ 〈2, 2, pc, Some ? short_jump〉 |
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[1054] | 511 | | Some x ⇒ let 〈ignore, a〉 ≝ x in find_right_jump pc a ]. |
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[907] | 512 | |
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[1109] | 513 | (* lemma frrj_ok: |
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[1054] | 514 | ∀pc.∀labels.∀j_id. |
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| 515 | let 〈i1,i2,addr,jl〉 ≝ find_right_relative_jump pc labels j_id in |
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| 516 | match lookup_opt ? ? j_id labels with |
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| 517 | [ None ⇒ True (* long jump *) |
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| 518 | | Some x ⇒ let 〈ignore,j_addr〉 ≝ x in addr = j_addr ∧ match jl with |
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| 519 | [ None ⇒ False (* doesn't happen *) |
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| 520 | | Some j ⇒ match j with |
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| 521 | [ short_jump ⇒ distance (nat_of_bitvector ? pc) (nat_of_bitvector ? j_addr) < 127 |
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| 522 | | medium_jump ⇒ \fst (split ? 5 11 j_addr) = \fst (split ? 5 11 pc) |
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| 523 | | long_jump ⇒ True |
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| 524 | ] |
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| 525 | ] |
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| 526 | ]. |
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| 527 | #pc #labels #j_id whd in match (find_right_relative_jump pc labels j_id) |
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| 528 | cases (lookup_opt ? ? j_id labels) normalize nodelta |
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| 529 | [ // |
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| 530 | | #x cases x #y #j_addr -x; normalize nodelta lapply (frj_ok pc j_addr) |
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| 531 | cases (find_right_jump ??) #x cases x #i1 #i2 -x #x cases x #i3 #z -x; cases z |
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| 532 | normalize nodelta |
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| 533 | [ // |
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| 534 | | #jl cases jl normalize nodelta |
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| 535 | [1,3: // |2: #H @H ] |
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| 536 | ] |
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| 537 | ] |
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[1109] | 538 | qed. *) |
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[1054] | 539 | |
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| 540 | definition jep_relative: Word → (BitVectorTrie (Word × Identifier) 16) → preinstruction Identifier → ? ≝ |
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[907] | 541 | λpc.λlabels.λi. |
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| 542 | match i with |
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| 543 | [ JC jmp ⇒ find_right_relative_jump pc labels jmp |
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| 544 | | JNC jmp ⇒ find_right_relative_jump pc labels jmp |
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| 545 | | JB baddr jmp ⇒ find_right_relative_jump pc labels jmp |
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| 546 | | JZ jmp ⇒ find_right_relative_jump pc labels jmp |
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| 547 | | JNZ jmp ⇒ find_right_relative_jump pc labels jmp |
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| 548 | | JBC baddr jmp ⇒ find_right_relative_jump pc labels jmp |
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| 549 | | JNB baddr jmp ⇒ find_right_relative_jump pc labels jmp |
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| 550 | | CJNE addr jmp ⇒ find_right_relative_jump pc labels jmp |
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| 551 | | DJNZ addr jmp ⇒ find_right_relative_jump pc labels jmp |
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[1054] | 552 | | _ ⇒ let l ≝ length ? (assembly_preinstruction ? (λx.zero ?) i) in |
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| 553 | 〈l, l, pc, None …〉 ]. |
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| 554 | |
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| 555 | definition is_long_jump ≝ |
---|
| 556 | λj.match j with |
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| 557 | [ long_jump ⇒ true |
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| 558 | | _ ⇒ false |
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| 559 | ]. |
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| 560 | |
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| 561 | definition policy_safe ≝ |
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[1109] | 562 | (λ_:Word.λx:Word×Word×jump_length.let 〈pc,addr,j〉 ≝ x in |
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[1054] | 563 | match j with |
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| 564 | [ short_jump ⇒ distance (nat_of_bitvector ? pc) (nat_of_bitvector ? addr) < 127 |
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| 565 | | medium_jump ⇒ \fst (split ? 5 11 addr) = \fst (split ? 5 11 pc) |
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| 566 | | long_jump ⇒ True |
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| 567 | ] |
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| 568 | ). |
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| 569 | |
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| 570 | definition jump_expansion_policy ≝ |
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[1109] | 571 | Σpolicy:BitVectorTrie (Word × Word × jump_length) 16. |
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| 572 | forall ? ? policy policy_safe. |
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[1054] | 573 | |
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| 574 | definition inject_jump_expansion_policy: |
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[1109] | 575 | ∀p:BitVectorTrie (Word × Word × jump_length) 16. |
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| 576 | forall ? ? p policy_safe → jump_expansion_policy ≝ inject …. |
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[1054] | 577 | |
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| 578 | coercion inject_jump_expansion_policy: |
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[1109] | 579 | ∀p:BitVectorTrie (Word × Word × jump_length) 16. |
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| 580 | forall ? ? p policy_safe → jump_expansion_policy ≝ inject_jump_expansion_policy |
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| 581 | on p:(BitVectorTrie (Word × Word × jump_length) 16) to jump_expansion_policy. |
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| 582 | |
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| 583 | (* the jump length in a is greater than or equal to the jump length in b *) |
---|
| 584 | definition jump_length_decrease ≝ |
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| 585 | λa:jump_length.λb:jump_length. |
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| 586 | match a with |
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| 587 | [ short_jump ⇒ b = short_jump |
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| 588 | | medium_jump ⇒ b = short_jump ∨ b = medium_jump |
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| 589 | | long_jump ⇒ True |
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| 590 | ]. |
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[1054] | 591 | |
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[907] | 592 | definition jump_expansion_policy_internal: pseudo_assembly_program → |
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[1054] | 593 | (BitVectorTrie (Word × Identifier) 16) → jump_expansion_policy → |
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| 594 | Σres:(BitVectorTrie (Word × Identifier) 16) × (BitVectorTrie (Word × Word × jump_length) 16). |
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[1109] | 595 | let 〈x,p〉 ≝ res in |
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| 596 | True ≝ |
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[1054] | 597 | λprogram.λold_labels.λold_policy. |
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| 598 | let res ≝ |
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| 599 | foldl_strong (option Identifier × pseudo_instruction) |
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[1109] | 600 | (λprefix.Σres.True) |
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[1054] | 601 | (\snd program) |
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| 602 | (λprefix.λi.λtl.λprf.λacc. |
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| 603 | let 〈label, instr〉 ≝ i in |
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| 604 | let 〈pc,orig_pc,labels,policy〉 ≝ acc in |
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| 605 | let new_labels ≝ match label return λ_.(BitVectorTrie (Word × Identifier) 16) with |
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| 606 | [ None ⇒ labels |
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| 607 | | Some l ⇒ insert ? ? orig_pc 〈pc,l〉 labels |
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| 608 | ] in |
---|
| 609 | let add_instr ≝ match instr with |
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| 610 | [ Call c ⇒ |
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| 611 | match lookup_opt ? ? c new_labels with |
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[1109] | 612 | [ None ⇒ 〈2, 2, pc, Some ? short_jump〉 |
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[1054] | 613 | | Some x ⇒ let 〈ignore,c_addr〉 ≝ x in find_right_call pc c_addr ] |
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| 614 | | Jmp j ⇒ |
---|
| 615 | match lookup_opt ? ? j new_labels with |
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[1109] | 616 | [ None ⇒ 〈2, 2, pc, Some ? short_jump〉 |
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[1054] | 617 | | Some x ⇒ let 〈ignore,j_addr〉 ≝ x in find_right_jump pc j_addr ] |
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| 618 | | Instruction i ⇒ jep_relative pc new_labels i |
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| 619 | | Mov _ _ ⇒ 〈3, 3, pc, None …〉 |
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| 620 | | Cost _ ⇒ 〈0, 0, pc, None …〉 |
---|
| 621 | | Comment _ ⇒ 〈0, 0, pc, None …〉 ] in |
---|
| 622 | let 〈pc_delta, orig_pc_delta, addr, jmp_len〉 ≝ add_instr in |
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| 623 | let 〈new_pc,ignore〉 ≝ add_16_with_carry pc (bitvector_of_nat ? pc_delta) false in |
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| 624 | let 〈new_orig_pc,ignore〉 ≝ add_16_with_carry orig_pc (bitvector_of_nat ? orig_pc_delta) false in |
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| 625 | match jmp_len with |
---|
| 626 | [ None ⇒ 〈new_pc, orig_pc, new_labels, policy〉 |
---|
| 627 | | Some j ⇒ 〈new_pc, new_orig_pc, new_labels, insert ? ? orig_pc 〈pc, addr, j〉 policy〉 |
---|
| 628 | ] |
---|
| 629 | ) 〈zero ?, zero ?, old_labels, eject … old_policy〉 in |
---|
| 630 | let 〈npc, norig_pc, nlabels, npolicy〉 ≝ res in |
---|
| 631 | 〈nlabels, npolicy〉. |
---|
[1109] | 632 | //. |
---|
| 633 | (* [ cases res in p -res; #res >p1 >p2 normalize nodelta #Ha #Hb normalize in Hb; |
---|
[1054] | 634 | >Hb in Ha; normalize nodelta #H @H |
---|
| 635 | | generalize in match (sig2 … acc) >p1 >p2 >p3 #H |
---|
| 636 | @(forall_insert … H) normalize nodelta normalize nodelta in p4; cases instr in p4; >p5 >p6 normalize nodelta |
---|
| 637 | [5: #str >p9 #Heq cases (lookup_opt ? ? str ?) in Heq; normalize nodelta |
---|
| 638 | [ #Heq2 lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq2)))) |
---|
| 639 | #Heq3 destruct (Heq3) // |
---|
| 640 | | #x cases x -x #i0 #c_addr normalize nodelta lapply (frc_ok pc c_addr) |
---|
| 641 | cases (find_right_call pc c_addr) #x #y cases x #i0 #i1 -x; cases y #ad #jmp -y; |
---|
| 642 | normalize nodelta #Heq #Heq2 |
---|
| 643 | >(proj1 ? ? Heq) in Heq2; #Heq2 |
---|
| 644 | <(proj1 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq2)))) |
---|
| 645 | >(proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq2)))) in Heq; |
---|
| 646 | cases j normalize nodelta #Heq [ @⊥ ] @(proj2 ? ? Heq) |
---|
| 647 | ] |
---|
| 648 | |2,3,6: [3: #x] #z >p9 #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 649 | #ctd destruct (ctd) |
---|
| 650 | |1,4: |
---|
| 651 | #pi |
---|
| 652 | [1: cases label normalize nodelta [ #Hjep | #id #Hjep ] whd in Hjep: (??%??); cases pi in Hjep; |
---|
| 653 | |2: cases (lookup_opt ? ? pi ?) normalize nodelta >p9 |
---|
| 654 | [ #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 655 | #ctd destruct (ctd) // |
---|
| 656 | | #x cases x -x #i0 #j_addr normalize nodelta lapply (frj_ok pc j_addr) |
---|
| 657 | cases (find_right_jump pc j_addr) #x #y cases x #i0 #i1 -x; cases y #ad #jump -y; |
---|
| 658 | normalize nodelta #Heq #Heq2 |
---|
| 659 | >(proj1 ? ? Heq) in Heq2; #Heq2 |
---|
| 660 | <(proj1 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq2)))) |
---|
| 661 | >(proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq2)))) in Heq; |
---|
| 662 | cases j normalize nodelta #Heq @(proj2 ? ? Heq) |
---|
| 663 | ] |
---|
| 664 | ] |
---|
| 665 | [1,2,3,6,7,33,34,38,39,40,43,44,70,71: #acc #x normalize nodelta #Heq |
---|
| 666 | <(proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) in p9; |
---|
| 667 | #ctd destruct (ctd) |
---|
| 668 | |4,5,8,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,41,42,45,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69: |
---|
| 669 | #acc normalize nodelta #Heq |
---|
| 670 | <(proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) in p9; |
---|
| 671 | #ctd destruct (ctd) |
---|
| 672 | |35,36,37,72,73,74: normalize nodelta #Heq |
---|
| 673 | <(proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) in p9; |
---|
| 674 | #ctd destruct (ctd) |
---|
| 675 | |9,10,14,15: #j_id normalize nodelta >p9 lapply (frrj_ok pc labels j_id) |
---|
| 676 | whd in match (find_right_relative_jump pc labels j_id) |
---|
| 677 | normalize nodelta cases (lookup_opt ? ? j_id labels) normalize nodelta |
---|
| 678 | [1,3,5,7: #_ #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 679 | #Heq2 destruct (Heq2) // |
---|
| 680 | |2,4,6,8: #x cases x #i0 #j_addr #Hok #Heq >Heq in Hok; |
---|
| 681 | normalize nodelta #Hok >(proj1 … Hok) @(proj2 … Hok) |
---|
| 682 | ] |
---|
| 683 | |46,47,51,52: #j_id normalize nodelta >p9 lapply (frrj_ok pc (insert … orig_pc 〈pc,id〉 labels) j_id) |
---|
| 684 | whd in match (find_right_relative_jump pc (insert … orig_pc 〈pc,id〉 labels) j_id) |
---|
| 685 | normalize nodelta cases (lookup_opt ? ? j_id (insert … orig_pc 〈pc,id〉 labels)) normalize nodelta |
---|
| 686 | [1,3,5,7: #_ #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 687 | #Heq2 destruct (Heq2) // |
---|
| 688 | |2,4,6,8: #x cases x #i0 #j_addr #Hok #Heq >Heq in Hok; |
---|
| 689 | normalize nodelta #Hok >(proj1 … Hok) @(proj2 … Hok) |
---|
| 690 | ] |
---|
| 691 | |11,12,13,16,17: #x #j_id normalize nodelta >p9 lapply (frrj_ok pc labels j_id) |
---|
| 692 | whd in match (find_right_relative_jump pc labels j_id) |
---|
| 693 | normalize nodelta cases (lookup_opt ? ? j_id labels) normalize nodelta |
---|
| 694 | [1,3,5,7,9: #_ #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 695 | #Heq2 destruct (Heq2) // |
---|
| 696 | |2,4,6,8,10: #x cases x #i0 #j_addr #Hok #Heq >Heq in Hok; |
---|
| 697 | normalize nodelta #Hok >(proj1 … Hok) @(proj2 … Hok) |
---|
| 698 | ] |
---|
| 699 | |48,49,50,53,54: #x #j_id normalize nodelta >p9 lapply (frrj_ok pc (insert … orig_pc 〈pc,id〉 labels) j_id) |
---|
| 700 | whd in match (find_right_relative_jump pc (insert … orig_pc 〈pc,id〉 labels) j_id) |
---|
| 701 | normalize nodelta cases (lookup_opt ? ? j_id (insert … orig_pc 〈pc,id〉 labels)) normalize nodelta |
---|
| 702 | [1,3,5,7,9: #_ #Heq lapply (proj2 ? ? (pair_destruct … (proj2 ? ? (pair_destruct … Heq)))) |
---|
| 703 | #Heq2 destruct (Heq2) // |
---|
| 704 | |2,4,6,8,10: #x cases x #i0 #j_addr #Hok #Heq >Heq in Hok; |
---|
| 705 | normalize nodelta #Hok >(proj1 … Hok) @(proj2 … Hok) |
---|
| 706 | ] |
---|
| 707 | ] |
---|
| 708 | ] |
---|
| 709 | | generalize in match (sig2 … acc) >p1 >p2 >p3 #H |
---|
| 710 | @H |
---|
| 711 | | generalize in match (sig2 … old_policy) #H @H |
---|
[1109] | 712 | ] *) |
---|
[1054] | 713 | qed. |
---|
[1109] | 714 | |
---|
| 715 | (* lemma short_jumps_ok: |
---|
| 716 | ∀program.∀l:BitVectorTrie (Word×Identifier) 16.∀p:jump_expansion_policy. |
---|
| 717 | forall (Word×Word×jump_length) 16 (\snd (jump_expansion_policy_internal program l p)) |
---|
| 718 | (λk.λx.let 〈pc,addr,j〉 ≝ x in |
---|
| 719 | j = short_jump → |
---|
| 720 | distance (nat_of_bitvector 16 pc) (nat_of_bitvector 16 addr) < 127). |
---|
| 721 | #program #l #p @lookup_forall |
---|
| 722 | #x #b cases x -x #x cases x #pc #addr #j #Hl normalize nodelta |
---|
| 723 | cases j in Hl; #Hl #Hj |
---|
| 724 | [2,3: destruct (Hj) |
---|
| 725 | |-Hj; cases (jump_expansion_policy_internal program l p) in Hl; |
---|
| 726 | #res cases res -res #r #res normalize nodelta #Hf #Hl |
---|
| 727 | normalize in Hl; lapply (forall_lookup ? 16 res ? Hf ? ? Hl) |
---|
| 728 | normalize #H @H |
---|
| 729 | ] |
---|
| 730 | qed. *) |
---|
| 731 | |
---|
| 732 | (* lemma medium_jumps_ok: |
---|
| 733 | ∀program.∀l:BitVectorTrie (Word×Identifier) 16.∀p:jump_expansion_policy. |
---|
| 734 | forall (Word×Word×jump_length) 16 (\snd (jump_expansion_policy_internal program l p)) |
---|
| 735 | (λk.λx.let 〈pc,addr,j〉 ≝ x in |
---|
| 736 | j = medium_jump → |
---|
| 737 | distance (nat_of_bitvector 16 pc) (nat_of_bitvector 16 addr) < 127). |
---|
| 738 | #program #l #p @lookup_forall |
---|
| 739 | #x #b cases x -x #x cases x #pc #addr #j #Hl normalize nodelta |
---|
| 740 | cases j in Hl; #Hl #Hj |
---|
| 741 | [2,3: destruct (Hj) |
---|
| 742 | |-Hj; cases (jump_expansion_policy_internal program l p) in Hl; |
---|
| 743 | #res cases res -res #r #res normalize nodelta #Hf #Hl |
---|
| 744 | normalize in Hl; lapply (forall_lookup ? 16 res ? Hf ? ? Hl) |
---|
| 745 | normalize #H @H |
---|
| 746 | ] |
---|
| 747 | qed. *) |
---|
| 748 | |
---|
[842] | 749 | definition expand_relative_jump_internal: |
---|
| 750 | (Identifier → Word) → jump_length → Identifier → Word → ([[relative]] → preinstruction [[relative]]) → |
---|
| 751 | option (list instruction) |
---|
| 752 | ≝ |
---|
| 753 | λlookup_labels,jmp_len.λjmp:Identifier.λpc,i. |
---|
[832] | 754 | match jmp_len with |
---|
[842] | 755 | [ short_jump ⇒ |
---|
| 756 | let lookup_address ≝ lookup_labels jmp in |
---|
| 757 | let 〈result, flags〉 ≝ sub_16_with_carry pc lookup_address false in |
---|
| 758 | let 〈upper, lower〉 ≝ split ? 8 8 result in |
---|
| 759 | if eq_bv ? upper (zero 8) then |
---|
| 760 | let address ≝ RELATIVE lower in |
---|
| 761 | Some ? [ RealInstruction (i address) ] |
---|
| 762 | else |
---|
| 763 | None ? |
---|
| 764 | | medium_jump ⇒ None … |
---|
[832] | 765 | | long_jump ⇒ |
---|
[842] | 766 | Some ? |
---|
| 767 | [ RealInstruction (i (RELATIVE (bitvector_of_nat ? 2))); |
---|
[832] | 768 | SJMP (RELATIVE (bitvector_of_nat ? 3)); (* LJMP size? *) |
---|
[842] | 769 | LJMP (ADDR16 (lookup_labels jmp)) |
---|
[832] | 770 | ] |
---|
| 771 | ]. |
---|
| 772 | @ I |
---|
| 773 | qed. |
---|
[825] | 774 | |
---|
[842] | 775 | definition expand_relative_jump: (Identifier → Word) → jump_length → Word → preinstruction Identifier → option (list instruction) ≝ |
---|
| 776 | λlookup_labels. |
---|
[832] | 777 | λjmp_len: jump_length. |
---|
[842] | 778 | λpc. |
---|
[832] | 779 | λi: preinstruction Identifier. |
---|
| 780 | let rel_jmp ≝ RELATIVE (bitvector_of_nat ? 2) in |
---|
| 781 | match i with |
---|
[842] | 782 | [ JC jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JC ?) |
---|
| 783 | | JNC jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JNC ?) |
---|
| 784 | | JB baddr jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JB ? baddr) |
---|
| 785 | | JZ jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JZ ?) |
---|
| 786 | | JNZ jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JNZ ?) |
---|
| 787 | | JBC baddr jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JBC ? baddr) |
---|
| 788 | | JNB baddr jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (JNB ? baddr) |
---|
| 789 | | CJNE addr jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (CJNE ? addr) |
---|
| 790 | | DJNZ addr jmp ⇒ expand_relative_jump_internal lookup_labels jmp_len jmp pc (DJNZ ? addr) |
---|
[832] | 791 | | ADD arg1 arg2 ⇒ Some ? [ ADD ? arg1 arg2 ] |
---|
| 792 | | ADDC arg1 arg2 ⇒ Some ? [ ADDC ? arg1 arg2 ] |
---|
| 793 | | SUBB arg1 arg2 ⇒ Some ? [ SUBB ? arg1 arg2 ] |
---|
| 794 | | INC arg ⇒ Some ? [ INC ? arg ] |
---|
| 795 | | DEC arg ⇒ Some ? [ DEC ? arg ] |
---|
| 796 | | MUL arg1 arg2 ⇒ Some ? [ MUL ? arg1 arg2 ] |
---|
| 797 | | DIV arg1 arg2 ⇒ Some ? [ DIV ? arg1 arg2 ] |
---|
| 798 | | DA arg ⇒ Some ? [ DA ? arg ] |
---|
| 799 | | ANL arg ⇒ Some ? [ ANL ? arg ] |
---|
| 800 | | ORL arg ⇒ Some ? [ ORL ? arg ] |
---|
| 801 | | XRL arg ⇒ Some ? [ XRL ? arg ] |
---|
| 802 | | CLR arg ⇒ Some ? [ CLR ? arg ] |
---|
| 803 | | CPL arg ⇒ Some ? [ CPL ? arg ] |
---|
| 804 | | RL arg ⇒ Some ? [ RL ? arg ] |
---|
| 805 | | RR arg ⇒ Some ? [ RR ? arg ] |
---|
| 806 | | RLC arg ⇒ Some ? [ RLC ? arg ] |
---|
| 807 | | RRC arg ⇒ Some ? [ RRC ? arg ] |
---|
| 808 | | SWAP arg ⇒ Some ? [ SWAP ? arg ] |
---|
| 809 | | MOV arg ⇒ Some ? [ MOV ? arg ] |
---|
| 810 | | MOVX arg ⇒ Some ? [ MOVX ? arg ] |
---|
| 811 | | SETB arg ⇒ Some ? [ SETB ? arg ] |
---|
| 812 | | PUSH arg ⇒ Some ? [ PUSH ? arg ] |
---|
| 813 | | POP arg ⇒ Some ? [ POP ? arg ] |
---|
| 814 | | XCH arg1 arg2 ⇒ Some ? [ XCH ? arg1 arg2 ] |
---|
| 815 | | XCHD arg1 arg2 ⇒ Some ? [ XCHD ? arg1 arg2 ] |
---|
| 816 | | RET ⇒ Some ? [ RET ? ] |
---|
| 817 | | RETI ⇒ Some ? [ RETI ? ] |
---|
| 818 | | NOP ⇒ Some ? [ RealInstruction (NOP ?) ] |
---|
| 819 | ]. |
---|
| 820 | |
---|
[1054] | 821 | definition expand_pseudo_instruction: ? → ? → Word → jump_length → pseudo_instruction → option (list instruction) ≝ |
---|
[825] | 822 | λlookup_labels. |
---|
| 823 | λlookup_datalabels. |
---|
[832] | 824 | λpc. |
---|
| 825 | λjmp_len. |
---|
| 826 | λi. |
---|
| 827 | match i with |
---|
| 828 | [ Cost cost ⇒ Some ? [ ] |
---|
| 829 | | Comment comment ⇒ Some ? [ ] |
---|
| 830 | | Call call ⇒ |
---|
| 831 | match jmp_len with |
---|
| 832 | [ short_jump ⇒ None ? |
---|
| 833 | | medium_jump ⇒ |
---|
| 834 | let 〈ignore, address〉 ≝ split ? 5 11 (lookup_labels call) in |
---|
| 835 | let 〈fst_5, rest〉 ≝ split ? 5 11 pc in |
---|
| 836 | if eq_bv ? ignore fst_5 then |
---|
| 837 | let address ≝ ADDR11 address in |
---|
| 838 | Some ? ([ ACALL address ]) |
---|
| 839 | else |
---|
| 840 | None ? |
---|
| 841 | | long_jump ⇒ |
---|
| 842 | let address ≝ ADDR16 (lookup_labels call) in |
---|
| 843 | Some ? [ LCALL address ] |
---|
| 844 | ] |
---|
| 845 | | Mov d trgt ⇒ |
---|
| 846 | let address ≝ DATA16 (lookup_datalabels trgt) in |
---|
| 847 | Some ? [ RealInstruction (MOV ? (inl ? ? (inl ? ? (inr ? ? 〈DPTR, address〉))))] |
---|
[842] | 848 | | Instruction instr ⇒ expand_relative_jump lookup_labels jmp_len pc instr |
---|
[832] | 849 | | Jmp jmp ⇒ |
---|
| 850 | match jmp_len with |
---|
| 851 | [ short_jump ⇒ |
---|
| 852 | let lookup_address ≝ lookup_labels jmp in |
---|
| 853 | let 〈result, flags〉 ≝ sub_16_with_carry pc lookup_address false in |
---|
| 854 | let 〈upper, lower〉 ≝ split ? 8 8 result in |
---|
| 855 | if eq_bv ? upper (zero 8) then |
---|
| 856 | let address ≝ RELATIVE lower in |
---|
| 857 | Some ? [ SJMP address ] |
---|
| 858 | else |
---|
| 859 | None ? |
---|
| 860 | | medium_jump ⇒ |
---|
| 861 | let address ≝ lookup_labels jmp in |
---|
| 862 | let 〈fst_5_addr, rest_addr〉 ≝ split ? 5 11 address in |
---|
| 863 | let 〈fst_5_pc, rest_pc〉 ≝ split ? 5 11 pc in |
---|
| 864 | if eq_bv ? fst_5_addr fst_5_pc then |
---|
| 865 | let address ≝ ADDR11 rest_addr in |
---|
| 866 | Some ? ([ AJMP address ]) |
---|
| 867 | else |
---|
| 868 | None ? |
---|
| 869 | | long_jump ⇒ |
---|
| 870 | let address ≝ ADDR16 (lookup_labels jmp) in |
---|
| 871 | Some ? [ LJMP address ] |
---|
| 872 | ] |
---|
| 873 | ]. |
---|
[825] | 874 | @ I |
---|
| 875 | qed. |
---|
| 876 | |
---|
[914] | 877 | let rec jump_expansion_internal (n: nat) (program: pseudo_assembly_program) |
---|
[1054] | 878 | (old_labels: BitVectorTrie (Word × Identifier) 16) |
---|
[1109] | 879 | (old_policy: Σbla:BitVectorTrie (Word × Word × jump_length) 16. |
---|
| 880 | forall ? ? bla policy_safe) |
---|
[1054] | 881 | on n: BitVectorTrie jump_length 16 ≝ |
---|
[914] | 882 | match n with |
---|
[1054] | 883 | [ O ⇒ fold … |
---|
| 884 | (λ_.λx.λacc.let 〈pc,i2,jmp_len〉 ≝ x in insert … pc jmp_len acc) |
---|
| 885 | old_policy (Stub ? ?) |
---|
[914] | 886 | | S n' ⇒ |
---|
[1109] | 887 | jump_expansion_internal n' program |
---|
[1054] | 888 | (\fst (jump_expansion_policy_internal program old_labels old_policy)) |
---|
| 889 | (\snd (jump_expansion_policy_internal program old_labels old_policy)) |
---|
| 890 | ]. |
---|
| 891 | generalize in match (sig2 … (jump_expansion_policy_internal program old_labels old_policy)) |
---|
| 892 | cases (jump_expansion_policy_internal program old_labels old_policy) |
---|
| 893 | #a cases a #xx #pp normalize nodelta |
---|
| 894 | #H #H2 normalize nodelta @H2 |
---|
[1109] | 895 | qed. |
---|
| 896 | |
---|
| 897 | |
---|
| 898 | |
---|
| 899 | |
---|
[989] | 900 | (**************************************** START OF POLICY ABSTRACTION ********************) |
---|
| 901 | |
---|
[987] | 902 | definition policy_type ≝ Word → jump_length. |
---|
| 903 | |
---|
| 904 | definition jump_expansion': pseudo_assembly_program → policy_type ≝ |
---|
| 905 | λprogram.λpc. |
---|
[914] | 906 | let policy ≝ jump_expansion_internal (length ? (\snd program)) program (Stub ? ?) (Stub ? ?) in |
---|
| 907 | lookup ? ? pc policy long_jump. |
---|
[1054] | 908 | normalize // |
---|
| 909 | qed. |
---|
| 910 | |
---|
[993] | 911 | definition assembly_1_pseudoinstruction_safe ≝ |
---|
[913] | 912 | λprogram: pseudo_assembly_program. |
---|
[987] | 913 | λjump_expansion: policy_type. |
---|
[922] | 914 | λppc: Word. |
---|
[913] | 915 | λpc: Word. |
---|
[832] | 916 | λlookup_labels. |
---|
| 917 | λlookup_datalabels. |
---|
| 918 | λi. |
---|
[987] | 919 | let expansion ≝ jump_expansion ppc in |
---|
[1054] | 920 | match expand_pseudo_instruction lookup_labels lookup_datalabels pc expansion i with |
---|
[832] | 921 | [ None ⇒ None ? |
---|
[836] | 922 | | Some pseudos ⇒ |
---|
| 923 | let mapped ≝ map ? ? assembly1 pseudos in |
---|
| 924 | let flattened ≝ flatten ? mapped in |
---|
[922] | 925 | let pc_len ≝ length ? flattened in |
---|
| 926 | Some ? (〈pc_len, flattened〉) |
---|
[832] | 927 | ]. |
---|
[913] | 928 | |
---|
[993] | 929 | definition construct_costs_safe ≝ |
---|
[832] | 930 | λprogram. |
---|
[987] | 931 | λjump_expansion: policy_type. |
---|
[922] | 932 | λpseudo_program_counter: nat. |
---|
[832] | 933 | λprogram_counter: nat. |
---|
| 934 | λcosts: BitVectorTrie Word 16. |
---|
| 935 | λi. |
---|
| 936 | match i with |
---|
[840] | 937 | [ Cost cost ⇒ |
---|
[832] | 938 | let program_counter_bv ≝ bitvector_of_nat ? program_counter in |
---|
| 939 | Some ? 〈program_counter, (insert ? ? program_counter_bv cost costs)〉 |
---|
| 940 | | _ ⇒ |
---|
| 941 | let pc_bv ≝ bitvector_of_nat ? program_counter in |
---|
[922] | 942 | let ppc_bv ≝ bitvector_of_nat ? pseudo_program_counter in |
---|
[993] | 943 | let lookup_labels ≝ λx.pc_bv in |
---|
| 944 | let lookup_datalabels ≝ λx.zero ? in |
---|
[836] | 945 | let pc_delta_assembled ≝ |
---|
[993] | 946 | assembly_1_pseudoinstruction_safe program jump_expansion ppc_bv pc_bv |
---|
[836] | 947 | lookup_labels lookup_datalabels i |
---|
| 948 | in |
---|
| 949 | match pc_delta_assembled with |
---|
[832] | 950 | [ None ⇒ None ? |
---|
[836] | 951 | | Some pc_delta_assembled ⇒ |
---|
| 952 | let 〈pc_delta, assembled〉 ≝ pc_delta_assembled in |
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[837] | 953 | Some ? 〈pc_delta + program_counter, costs〉 |
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[832] | 954 | ] |
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| 955 | ]. |
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| 956 | |
---|
[985] | 957 | (* This establishes the correspondence between pseudo program counters and |
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| 958 | program counters. It is at the heart of the proof. *) |
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| 959 | (*CSC: code taken from build_maps *) |
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[1054] | 960 | definition sigma00: pseudo_assembly_program → policy_type → list ? → option (nat × (nat × (BitVectorTrie Word 16))) ≝ |
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[987] | 961 | λinstr_list. |
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| 962 | λjump_expansion: policy_type. |
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| 963 | λl:list labelled_instruction. |
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[985] | 964 | foldl ?? |
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| 965 | (λt,i. |
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[832] | 966 | match t with |
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| 967 | [ None ⇒ None ? |
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[985] | 968 | | Some ppc_pc_map ⇒ |
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| 969 | let 〈ppc,pc_map〉 ≝ ppc_pc_map in |
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| 970 | let 〈program_counter, sigma_map〉 ≝ pc_map in |
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| 971 | let 〈label, i〉 ≝ i in |
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[993] | 972 | match construct_costs_safe instr_list jump_expansion ppc program_counter (Stub …) i with |
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[832] | 973 | [ None ⇒ None ? |
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[985] | 974 | | Some pc_ignore ⇒ |
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| 975 | let 〈pc,ignore〉 ≝ pc_ignore in |
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| 976 | Some … 〈S ppc,〈pc, insert ? ? (bitvector_of_nat ? ppc) (bitvector_of_nat ? pc) sigma_map〉〉 ] |
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[1054] | 977 | ]) (Some ? 〈0, 〈0, (Stub ? ?)〉〉) l. |
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[985] | 978 | |
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[987] | 979 | definition sigma0: pseudo_assembly_program → policy_type → option (nat × (nat × (BitVectorTrie Word 16))) |
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[1054] | 980 | ≝ λprog.λjump_expansion.sigma00 prog jump_expansion (\snd prog). |
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[985] | 981 | |
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[987] | 982 | definition tech_pc_sigma00: pseudo_assembly_program → policy_type → list labelled_instruction → option (nat × nat) ≝ |
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| 983 | λprogram,jump_expansion,instr_list. |
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[1054] | 984 | match sigma00 program jump_expansion instr_list with |
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[985] | 985 | [ None ⇒ None … |
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| 986 | | Some result ⇒ |
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| 987 | let 〈ppc,pc_sigma_map〉 ≝ result in |
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| 988 | let 〈pc,map〉 ≝ pc_sigma_map in |
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| 989 | Some … 〈ppc,pc〉 ]. |
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| 990 | |
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[987] | 991 | definition sigma_safe: pseudo_assembly_program → policy_type → option (Word → Word) ≝ |
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| 992 | λinstr_list,jump_expansion. |
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| 993 | match sigma0 instr_list jump_expansion with |
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[832] | 994 | [ None ⇒ None ? |
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| 995 | | Some result ⇒ |
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[985] | 996 | let 〈ppc,pc_sigma_map〉 ≝ result in |
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| 997 | let 〈pc, sigma_map〉 ≝ pc_sigma_map in |
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[832] | 998 | if gtb pc (2^16) then |
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| 999 | None ? |
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| 1000 | else |
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[985] | 1001 | Some ? (λx.lookup ?? x sigma_map (zero …)) ]. |
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[832] | 1002 | |
---|
[985] | 1003 | (* stuff about policy *) |
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| 1004 | |
---|
[987] | 1005 | definition policy_ok ≝ λjump_expansion,p. sigma_safe p jump_expansion ≠ None …. |
---|
[985] | 1006 | |
---|
[987] | 1007 | definition policy ≝ λp. Σjump_expansion:policy_type. policy_ok jump_expansion p. |
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| 1008 | |
---|
| 1009 | lemma eject_policy: ∀p. policy p → policy_type. |
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| 1010 | #p #pol @(eject … pol) |
---|
| 1011 | qed. |
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| 1012 | |
---|
| 1013 | coercion eject_policy nocomposites: ∀p.∀pol:policy p. policy_type ≝ eject_policy on _pol:(policy ?) to policy_type. |
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| 1014 | |
---|
| 1015 | definition sigma: ∀p:pseudo_assembly_program. policy p → Word → Word ≝ |
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| 1016 | λp,policy. |
---|
| 1017 | match sigma_safe p (eject … policy) return λr:option (Word → Word). r ≠ None … → Word → Word with |
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[985] | 1018 | [ None ⇒ λabs. ⊥ |
---|
[987] | 1019 | | Some r ⇒ λ_.r] (sig2 … policy). |
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[993] | 1020 | cases abs /2/ |
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[985] | 1021 | qed. |
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| 1022 | |
---|
[987] | 1023 | example sigma_0: ∀p,pol. sigma p pol (bitvector_of_nat ? 0) = bitvector_of_nat ? 0. |
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[985] | 1024 | cases daemon. |
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| 1025 | qed. |
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| 1026 | |
---|
[998] | 1027 | definition expand_pseudo_instruction: |
---|
| 1028 | ∀program:pseudo_assembly_program.∀pol: policy program. |
---|
[1014] | 1029 | ∀ppc:Word.∀lookup_labels,lookup_datalabels,pc. |
---|
[998] | 1030 | lookup_labels = (λx. sigma program pol (address_of_word_labels_code_mem (\snd program) x)) → |
---|
| 1031 | lookup_datalabels = (λx. lookup ?? x (construct_datalabels (\fst program)) (zero ?)) → |
---|
[1014] | 1032 | let pi ≝ \fst (fetch_pseudo_instruction (\snd program) ppc) in |
---|
[998] | 1033 | pc = sigma program pol ppc → |
---|
| 1034 | Σres:list instruction. Some … res = expand_pseudo_instruction_safe lookup_labels lookup_datalabels pc (pol ppc) pi |
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[1014] | 1035 | ≝ λprogram,pol,ppc,lookup_labels,lookup_datalabels,pc,prf1,prf2,prf3. |
---|
| 1036 | match expand_pseudo_instruction_safe lookup_labels lookup_datalabels pc (pol ppc) (\fst (fetch_pseudo_instruction (\snd program) ppc)) with |
---|
[998] | 1037 | [ None ⇒ let dummy ≝ [ ] in dummy |
---|
| 1038 | | Some res ⇒ res ]. |
---|
| 1039 | [ cases daemon |
---|
| 1040 | | >p %] |
---|
| 1041 | qed. |
---|
| 1042 | |
---|
[993] | 1043 | (* MAIN AXIOM HERE, HIDDEN USING cases daemon *) |
---|
[1054] | 1044 | definition assembly_1_pseudoinstruction: |
---|
[993] | 1045 | ∀program:pseudo_assembly_program.∀pol: policy program. |
---|
| 1046 | ∀ppc:Word.∀lookup_labels,lookup_datalabels,pi. |
---|
| 1047 | lookup_labels = (λx. sigma program pol (address_of_word_labels_code_mem (\snd program) x)) → |
---|
| 1048 | lookup_datalabels = (λx. lookup ?? x (construct_datalabels (\fst program)) (zero ?)) → |
---|
| 1049 | \fst (fetch_pseudo_instruction (\snd program) ppc) = pi → |
---|
| 1050 | Σres:(nat × (list Byte)). |
---|
| 1051 | let 〈len,code〉 ≝ res in |
---|
| 1052 | sigma program pol (\snd (half_add ? ppc (bitvector_of_nat ? 1))) = |
---|
| 1053 | bitvector_of_nat … (nat_of_bitvector … (sigma program pol ppc) + len) |
---|
| 1054 | ≝ λprogram: pseudo_assembly_program. |
---|
| 1055 | λpol: policy program. |
---|
| 1056 | λppc: Word. |
---|
| 1057 | λlookup_labels. |
---|
| 1058 | λlookup_datalabels. |
---|
| 1059 | λpi. |
---|
| 1060 | λprf1,prf2,prf3. |
---|
| 1061 | match assembly_1_pseudoinstruction_safe program pol ppc (sigma program pol ppc) lookup_labels lookup_datalabels pi with |
---|
| 1062 | [ None ⇒ let dummy ≝ 〈0,[ ]〉 in dummy |
---|
| 1063 | | Some res ⇒ res ]. |
---|
| 1064 | [ @⊥ elim pi in p [*] |
---|
| 1065 | try (#ARG1 #ARG2 #ARG3 #abs) try (#ARG1 #ARG2 #abs) try (#ARG1 #abs) try #abs |
---|
| 1066 | generalize in match (jmeq_to_eq ??? abs) -abs; #abs whd in abs:(??%?); try destruct(abs) |
---|
| 1067 | whd in abs:(??match % with [_ ⇒ ? | _ ⇒ ?]?); |
---|
| 1068 | (* WRONG HERE, NEEDS LEMMA SAYING THAT THE POLICY DOES NOT RETURN MEDIUM! *) |
---|
| 1069 | cases daemon |
---|
[1054] | 1070 | | cases res in p ⊢ %; -res; #len #code #EQ normalize nodelta; |
---|
[993] | 1071 | (* THIS SHOULD BE TRUE INSTEAD *) |
---|
| 1072 | cases daemon] |
---|
| 1073 | qed. |
---|
| 1074 | |
---|
| 1075 | (* MAIN AXIOM HERE, HIDDEN USING cases daemon *) |
---|
| 1076 | definition construct_costs': |
---|
[1054] | 1077 | ∀program. policy program → nat → nat → ? → ? → |
---|
| 1078 | Σres:(nat × (BitVectorTrie Word 16)). True |
---|
[993] | 1079 | ≝ |
---|
| 1080 | λprogram.λpol: policy program.λppc,pc,costs,i. |
---|
| 1081 | match construct_costs_safe program pol ppc pc costs i with |
---|
| 1082 | [ None ⇒ let dummy ≝ 〈0, Stub ??〉 in dummy |
---|
| 1083 | | Some res ⇒ res ]. |
---|
| 1084 | [ cases daemon |
---|
[1054] | 1085 | | %] |
---|
[993] | 1086 | qed. |
---|
| 1087 | |
---|
| 1088 | definition construct_costs ≝ |
---|
| 1089 | λprogram,pol,ppc,pc,costs,i. eject … (construct_costs' program pol ppc pc costs i). |
---|
| 1090 | |
---|
[985] | 1091 | axiom construct_costs_sigma: |
---|
[993] | 1092 | ∀p.∀pol:policy p.∀ppc,pc,costs,i. |
---|
[987] | 1093 | bitvector_of_nat ? pc = sigma p pol (bitvector_of_nat ? ppc) → |
---|
[993] | 1094 | bitvector_of_nat ? (\fst (construct_costs p pol ppc pc costs i)) = sigma p pol (bitvector_of_nat 16 (S ppc)). |
---|
[985] | 1095 | |
---|
| 1096 | axiom tech_pc_sigma00_append_Some: |
---|
[993] | 1097 | ∀program.∀pol:policy program.∀prefix,costs,label,i,ppc,pc. |
---|
[987] | 1098 | tech_pc_sigma00 program pol prefix = Some … 〈ppc,pc〉 → |
---|
[993] | 1099 | tech_pc_sigma00 program pol (prefix@[〈label,i〉]) = Some … 〈S ppc,\fst (construct_costs program pol … ppc pc costs i)〉. |
---|
[985] | 1100 | |
---|
[989] | 1101 | definition build_maps: |
---|
| 1102 | ∀pseudo_program.∀pol:policy pseudo_program. |
---|
| 1103 | Σres:((BitVectorTrie Word 16) × (BitVectorTrie Word 16)). |
---|
| 1104 | let 〈labels,costs〉 ≝ res in |
---|
| 1105 | ∀id. occurs_exactly_once id (\snd pseudo_program) → |
---|
| 1106 | lookup ?? id labels (zero …) = sigma pseudo_program pol (address_of_word_labels_code_mem (\snd pseudo_program) id) |
---|
[993] | 1107 | ≝ |
---|
[987] | 1108 | λpseudo_program.λpol:policy pseudo_program. |
---|
[985] | 1109 | let result ≝ |
---|
| 1110 | foldl_strong |
---|
| 1111 | (option Identifier × pseudo_instruction) |
---|
| 1112 | (λpre. Σres:((BitVectorTrie Word 16) × (nat × (nat × (BitVectorTrie Word 16)))). |
---|
| 1113 | let 〈labels,ppc_pc_costs〉 ≝ res in |
---|
| 1114 | let 〈ppc',pc_costs〉 ≝ ppc_pc_costs in |
---|
| 1115 | let 〈pc',costs〉 ≝ pc_costs in |
---|
[993] | 1116 | And ( And ( |
---|
| 1117 | And (bitvector_of_nat ? pc' = sigma pseudo_program pol (bitvector_of_nat ? ppc')) (*∧*) |
---|
| 1118 | (ppc' = length … pre)) (*∧ *) |
---|
| 1119 | (tech_pc_sigma00 pseudo_program (eject … pol) pre = Some ? 〈ppc',pc'〉)) (*∧*) |
---|
| 1120 | (∀id. occurs_exactly_once id pre → |
---|
| 1121 | lookup ?? id labels (zero …) = sigma pseudo_program pol (address_of_word_labels_code_mem pre id))) |
---|
[985] | 1122 | (\snd pseudo_program) |
---|
| 1123 | (λprefix,i,tl,prf,t. |
---|
| 1124 | let 〈labels, ppc_pc_costs〉 ≝ t in |
---|
| 1125 | let 〈ppc, pc_costs〉 ≝ ppc_pc_costs in |
---|
| 1126 | let 〈pc,costs〉 ≝ pc_costs in |
---|
| 1127 | let 〈label, i'〉 ≝ i in |
---|
| 1128 | let labels ≝ |
---|
| 1129 | match label with |
---|
| 1130 | [ None ⇒ labels |
---|
| 1131 | | Some label ⇒ |
---|
| 1132 | let program_counter_bv ≝ bitvector_of_nat ? pc in |
---|
[993] | 1133 | insert ? ? label program_counter_bv labels] |
---|
[985] | 1134 | in |
---|
[993] | 1135 | let construct ≝ construct_costs pseudo_program pol ppc pc costs i' in |
---|
| 1136 | 〈labels, 〈S ppc,construct〉〉 |
---|
[985] | 1137 | ) 〈(Stub ? ?), 〈0, 〈0, Stub ? ?〉〉〉 |
---|
| 1138 | in |
---|
| 1139 | let 〈labels, ppc_pc_costs〉 ≝ result in |
---|
| 1140 | let 〈ppc,pc_costs〉 ≝ ppc_pc_costs in |
---|
| 1141 | let 〈pc, costs〉 ≝ pc_costs in |
---|
| 1142 | 〈labels, costs〉. |
---|
[993] | 1143 | [2: whd generalize in match (sig2 … t) >p >p1 >p2 >p3 * * * #IHn1 #IH0 #IH1 #IH2 |
---|
| 1144 | generalize in match (refl … construct); cases construct in ⊢ (???% → %) #PC #CODE #JMEQ % [% [%]] |
---|
| 1145 | [ <(construct_costs_sigma … costs i1 IHn1) change with (? = ?(\fst construct)) >JMEQ % |
---|
[985] | 1146 | | >length_append <IH0 normalize; -IHn1; (*CSC: otherwise it diverges!*) // |
---|
[993] | 1147 | | >(tech_pc_sigma00_append_Some … costs … IH1) change with (Some … 〈S ppc,\fst construct〉 = ?) >JMEQ % |
---|
[985] | 1148 | | #id normalize nodelta; -labels1; cases label; normalize nodelta |
---|
| 1149 | [ #K <address_of_word_labels_code_mem_None [2:@K] @IH2 -IHn1; (*CSC: otherwise it diverges!*) // |
---|
| 1150 | | #l #H generalize in match (occurs_exactly_once_Some ???? H) in ⊢ ?; |
---|
| 1151 | generalize in match (refl … (eq_bv ? l id)); cases (eq_bv … l id) in ⊢ (???% → %) |
---|
| 1152 | [ #EQ #_ <(eq_bv_eq … EQ) >lookup_insert_hit >address_of_word_labels_code_mem_Some_hit |
---|
| 1153 | <IH0 [@IHn1 | <(eq_bv_eq … EQ) in H #H @H] |
---|
| 1154 | | #EQ change with (occurs_exactly_once ?? → ?) #K >lookup_insert_miss [2: -IHn1; /2/] |
---|
| 1155 | <(address_of_word_labels_code_mem_Some_miss … EQ … H) @IH2 -IHn1; //]]] |
---|
[993] | 1156 | |3: whd % [% [%]] // [>sigma_0//] #id normalize in ⊢ (% → ?) #abs @⊥ // |
---|
| 1157 | | generalize in match (sig2 … result) in ⊢ ?; |
---|
| 1158 | normalize nodelta in p ⊢ %; -result; >p in ⊢ (match % with [_ ⇒ ?] → ?) |
---|
| 1159 | normalize nodelta; >p1 normalize nodelta; >p2; normalize nodelta; * #_; #H @H] |
---|
[985] | 1160 | qed. |
---|
| 1161 | |
---|
[993] | 1162 | definition assembly: |
---|
| 1163 | ∀p:pseudo_assembly_program. policy p → list Byte × (BitVectorTrie Identifier 16) ≝ |
---|
| 1164 | λp.let 〈preamble, instr_list〉 ≝ p in |
---|
| 1165 | λpol. |
---|
| 1166 | let 〈labels,costs〉 ≝ build_maps 〈preamble,instr_list〉 pol in |
---|
[985] | 1167 | let datalabels ≝ construct_datalabels preamble in |
---|
| 1168 | let lookup_labels ≝ λx. lookup ? ? x labels (zero ?) in |
---|
| 1169 | let lookup_datalabels ≝ λx. lookup ? ? x datalabels (zero ?) in |
---|
[993] | 1170 | let result ≝ |
---|
| 1171 | foldl_strong |
---|
| 1172 | (option Identifier × pseudo_instruction) |
---|
| 1173 | (λpre. Σpc_ppc_code:(Word × (Word × (list Byte))). |
---|
| 1174 | let 〈pc,ppc_code〉 ≝ pc_ppc_code in |
---|
| 1175 | let 〈ppc,code〉 ≝ ppc_code in |
---|
| 1176 | ∀ppc'. |
---|
| 1177 | let 〈pi,newppc〉 ≝ fetch_pseudo_instruction instr_list ppc' in |
---|
| 1178 | let 〈len,assembledi〉 ≝ |
---|
| 1179 | assembly_1_pseudoinstruction 〈preamble,instr_list〉 pol ppc' lookup_labels lookup_datalabels pi ??? in |
---|
| 1180 | True) |
---|
| 1181 | instr_list |
---|
| 1182 | (λprefix,hd,tl,prf,pc_ppc_code. |
---|
| 1183 | let 〈pc, ppc_code〉 ≝ pc_ppc_code in |
---|
| 1184 | let 〈ppc, code〉 ≝ ppc_code in |
---|
| 1185 | let 〈pc_delta, program〉 ≝ assembly_1_pseudoinstruction 〈preamble,instr_list〉 pol ppc lookup_labels lookup_datalabels (\snd hd) ??? in |
---|
| 1186 | let 〈new_pc, flags〉 ≝ add_16_with_carry pc (bitvector_of_nat ? pc_delta) false in |
---|
| 1187 | let new_ppc ≝ \snd (half_add ? ppc (bitvector_of_nat ? 1)) in |
---|
| 1188 | 〈new_pc, 〈new_ppc, (code @ program)〉〉) |
---|
| 1189 | 〈(zero ?), 〈(zero ?), [ ]〉〉 |
---|
[985] | 1190 | in |
---|
[993] | 1191 | 〈\snd (\snd result), costs〉. |
---|
| 1192 | [2,5: % |
---|
| 1193 | |*: cases daemon ] |
---|
| 1194 | qed. |
---|
[832] | 1195 | |
---|
[820] | 1196 | definition assembly_unlabelled_program: assembly_program → option (list Byte × (BitVectorTrie Identifier 16)) ≝ |
---|
[1014] | 1197 | λp. Some ? (〈foldr ? ? (λi,l. assembly1 i @ l) [ ] p, Stub …〉). |
---|