source: src/compiler.ma @ 2497

Last change on this file since 2497 was 2497, checked in by mckinna, 7 years ago

Simplified dependencies on ASM; knock-on from changes in ASM/*.ma

File size: 2.7 KB
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1
2include "Clight/label.ma".
3include "Clight/SimplifyCasts.ma".
4include "Clight/switchRemoval.ma".
5include "Clight/toCminor.ma".
6include "Cminor/initialisation.ma".
7include "Cminor/toRTLabs.ma".
8
9definition front_end : clight_program → res (costlabel × clight_program × RTLabs_program) ≝
10λp.
11  let p ≝ program_switch_removal p in
12  let 〈p',init_cost〉 ≝ clight_label p in
13  let p ≝ simplify_program p' in
14  ! p ← clight_to_cminor p;
15  let p ≝ cminor_to_rtlabs init_cost p in
16  return 〈init_cost,p',p〉.
17
18include "RTLabs/RTLabsToRTL.ma".
19include "RTL/RTLToERTL.ma".
20include "ERTL/ERTLToLTL.ma".
21include "LTL/LTLToLIN.ma".
22include "LIN/LINToASM.ma".
23
24(* these are already defined in utilities/fixpoint.ma and ERTL/Interference.ma
25axiom the_fixpoint : fixpoint.
26axiom build : ∀valuation. coloured_graph valuation.
27*)
28definition back_end : RTLabs_program → pseudo_assembly_program ≝
29λp.
30  let p ≝ rtlabs_to_rtl p in
31  let p ≝ rtl_to_ertl p in
32  let p ≝ ertl_to_ltl p in  (* TODO: abstract over colouring *)
33  let p ≝ ltl_to_lin p in
34          lin_to_asm p.
35
36include "ASM/Assembly.ma".
37
38axiom assembler : pseudo_assembly_program → res (object_code × costlabel_map).
39(*
40include "ASM/Policy.ma".
41
42axiom Jump_expansion_failed : String.
43
44definition assembler : pseudo_assembly_program → res (object_code × costlabel_map) ≝
45λp.
46  let 〈preamble, list_instr〉 ≝ p in
47  (* TODO: fail if p is too large. *)
48  let p' ≝ 〈preamble, list_instr〉 in
49  ! sigma_pol ← opt_to_res ? (msg Jump_expansion_failed) (jump_expansion' p');
50  let sigma ≝ λppc. \fst (sigma_pol ppc) in
51  let pol ≝ λppc. \snd (sigma_pol ppc) in
52  OK ? (assembly p sigma pol).
53cases daemon
54qed.
55*)
56
57include "ASM/ASMCostsSplit.ma".
58
59definition lift_cost_map_back_to_front :
60  ∀clight, code_memory, lbls.
61   (∀l. (∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l) +
62       ¬(∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l)) →
63  as_cost_map (ASM_abstract_status code_memory lbls) →
64  (Σl : costlabel.in_clight_program clight l) → ℕ ≝ λclight,code_memory,lbls,dec,k,l_sig.
65   match dec l_sig with
66   [ inl prf ⇒ k «l_sig, prf»
67   | inr _ ⇒ 0 (* labels not present in out code get 0 *)
68   ].
69
70definition compile : clight_program →
71  res (object_code × costlabel_map × (𝚺labelled:clight_program. ((Σl.in_clight_program labelled l) → ℕ))) ≝
72λp.
73  ! 〈init_cost,p',p〉 ← front_end p;
74  let p ≝ back_end p in
75    ! p ← assembler p;
76  let k ≝ ASM_cost_map p ? in
77  let k' ≝ lift_cost_map_back_to_front
78    p'
79    (load_code_memory (\fst p))
80    (\snd p)
81    ? k
82    in
83  return 〈p, ❬p', k'❭〉.
84  cases daemon
85  qed.
86
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