| 1 | include "common/StructuredTraces.ma". (* includes "basics/lists/listb.ma".*) |
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| 2 | |
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| 3 | include "ASM/Status.ma". (* includes "ASM/ASM.ma". *) |
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| 4 | include "ASM/Fetch.ma". |
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| 5 | |
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| 6 | definition ASM_classify00: ∀a. preinstruction a → status_class ≝ |
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| 7 | λa, pre. |
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| 8 | match pre with |
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| 9 | [ RET ⇒ cl_return |
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| 10 | | RETI ⇒ cl_return |
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| 11 | | JZ _ ⇒ cl_jump |
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| 12 | | JNZ _ ⇒ cl_jump |
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| 13 | | JC _ ⇒ cl_jump |
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| 14 | | JNC _ ⇒ cl_jump |
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| 15 | | JB _ _ ⇒ cl_jump |
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| 16 | | JNB _ _ ⇒ cl_jump |
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| 17 | | JBC _ _ ⇒ cl_jump |
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| 18 | | CJNE _ _ ⇒ cl_jump |
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| 19 | | DJNZ _ _ ⇒ cl_jump |
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| 20 | | JMP _ ⇒ cl_call |
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| 21 | | _ ⇒ cl_other |
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| 22 | ]. |
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| 23 | |
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| 24 | definition ASM_classify0: instruction → status_class ≝ |
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| 25 | λi. |
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| 26 | match i with |
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| 27 | [ RealInstruction pre ⇒ ASM_classify00 [[relative]] pre |
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| 28 | | ACALL _ ⇒ cl_call |
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| 29 | | LCALL _ ⇒ cl_call |
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| 30 | | AJMP _ ⇒ cl_other |
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| 31 | | LJMP _ ⇒ cl_other |
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| 32 | | SJMP _ ⇒ cl_other |
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| 33 | | _ ⇒ cl_other |
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| 34 | ]. |
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| 35 | |
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| 36 | definition current_instruction0 ≝ |
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| 37 | λcode_memory: BitVectorTrie Byte 16. |
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| 38 | λprogram_counter: Word. |
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| 39 | \fst (\fst (fetch … code_memory program_counter)). |
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| 40 | |
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| 41 | definition current_instruction ≝ |
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| 42 | λcode_memory. |
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| 43 | λs: Status code_memory. |
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| 44 | current_instruction0 code_memory (program_counter … s). |
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| 45 | |
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| 46 | definition current_instruction_label ≝ |
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| 47 | λcode_memory. |
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| 48 | λcost_labels: BitVectorTrie costlabel 16. |
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| 49 | λs: Status code_memory. |
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| 50 | let pc ≝ program_counter … code_memory s in |
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| 51 | lookup_opt … pc cost_labels. |
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| 52 | |
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| 53 | definition next_instruction_properly_relates_program_counters ≝ |
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| 54 | λcode_memory. |
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| 55 | λbefore: Status code_memory. |
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| 56 | λafter : Status code_memory. |
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| 57 | let program_counter_before ≝ program_counter ? code_memory before in |
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| 58 | let 〈instruction, program_counter_after, ticks〉 ≝ fetch code_memory program_counter_before in |
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| 59 | program_counter ? code_memory after = program_counter_after. |
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| 60 | |
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| 61 | definition word_deqset: DeqSet ≝ |
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| 62 | mk_DeqSet Word (eq_bv 16) ?. |
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| 63 | @refl_iff_eq_bv_true |
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| 64 | qed. |
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| 65 | |
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| 66 | definition OC_classify: ∀code_memory. Status code_memory → status_class ≝ |
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| 67 | λcode_memory. |
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| 68 | λs: Status code_memory. |
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| 69 | ASM_classify0 (current_instruction … s). |
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