| 1 | include "ASM/I8051.ma". |
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| 2 | include "common/Registers.ma". |
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| 3 | |
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| 4 | record register_set: Type[1] ≝ |
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| 5 | { |
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| 6 | rs_set: Type[0]; |
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| 7 | rs_empty: rs_set; |
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| 8 | rs_singleton: Register → rs_set; |
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| 9 | rs_fold: ∀A: Type[0]. (Register → A → A) → rs_set → A → A; |
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| 10 | rs_insert: Register → rs_set → rs_set; |
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| 11 | rs_exists: Register → rs_set → bool; |
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| 12 | rs_union: rs_set → rs_set → rs_set; |
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| 13 | rs_to_list: rs_set → list Register; |
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| 14 | rs_from_list: list Register → rs_set |
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| 15 | }. |
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| 16 | |
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| 17 | (* dpm: horrendously inefficient, but will do for now *) |
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| 18 | |
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| 19 | definition rs_list_set_empty: list Register ≝ [ ]. |
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| 20 | |
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| 21 | definition rs_list_set_singleton: Register → list Register ≝ λr. [ r ]. |
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| 22 | |
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| 23 | definition rs_list_set_fold ≝ |
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| 24 | λA: Type[0]. |
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| 25 | λf: Register → A → A. |
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| 26 | λl: list Register. |
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| 27 | λa: A. |
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| 28 | foldr ? ? f a l. |
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| 29 | |
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| 30 | definition rs_list_set_insert ≝ |
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| 31 | λr: Register. |
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| 32 | λs: list Register. |
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| 33 | match member ? eq_Register r s with |
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| 34 | [ true ⇒ r :: s |
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| 35 | | false ⇒ s |
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| 36 | ]. |
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| 37 | |
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| 38 | definition rs_list_set_exists ≝ |
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| 39 | λr: Register. |
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| 40 | λs: list Register. |
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| 41 | member ? eq_Register r s. |
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| 42 | |
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| 43 | definition rs_list_set_union ≝ |
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| 44 | λr: list Register. |
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| 45 | λs: list Register. |
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| 46 | nub_by ? eq_Register (r @ s). |
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| 47 | |
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| 48 | definition rs_list_set_from_list ≝ |
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| 49 | λr: list Register. |
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| 50 | nub_by ? eq_Register r. |
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| 51 | |
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| 52 | definition register_list_set: register_set ≝ |
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| 53 | mk_register_set (list Register) rs_list_set_empty |
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| 54 | rs_list_set_singleton rs_list_set_fold |
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| 55 | rs_list_set_insert rs_list_set_exists |
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| 56 | rs_list_set_union |
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| 57 | (λx. x) rs_list_set_from_list. |
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