source: src/compiler.ma @ 2475

Last change on this file since 2475 was 2475, checked in by campbell, 8 years ago

Get compiler.ma and correctness.ma checking again. Note that the back-end
is in a state of flux at the moment, so is axiomatised out.

File size: 3.0 KB
Line 
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
18(* Recent changes have temporarily stopped the back-end from checking, so
19   axiomatise it for a little while.
20include "RTLabs/RTLabsToRTL.ma".
21include "RTL/RTLToERTL.ma".
22include "ERTL/ERTLToLTL.ma".
23include "LTL/LTLToLIN.ma".
24include "LIN/LINToASM.ma".
25
26(* these are already defined in utilities/fixpoint.ma and ERTL/Interference.ma
27axiom the_fixpoint : fixpoint.
28axiom build : ∀valuation. coloured_graph valuation.
29*)
30definition back_end : RTLabs_program → pseudo_assembly_program ≝
31λp.
32  let p ≝ rtlabs_to_rtl p in
33  let p ≝ rtl_to_ertl p in
34  let p ≝ ertl_to_ltl p in  (* TODO: abstract over colouring *)
35  let p ≝ ltl_to_lin p in
36          lin_to_asm p.
37*)
38include "ASM/ASM.ma".
39axiom back_end : RTLabs_program → pseudo_assembly_program.
40
41include "ASM/Assembly.ma".
42
43include "ASM/Policy.ma".
44
45axiom Jump_expansion_failed : String.
46
47include "ASM/ASMCostsSplit.ma".
48
49axiom assembler : pseudo_assembly_program → res (object_code × costlabel_map). (*
50definition assembler : pseudo_assembly_program → res (object_code × costlabel_map) ≝
51λp.
52  let 〈preamble, list_instr〉 ≝ p in
53  (* TODO: fail if p is too large. *)
54  let p' ≝ 〈preamble, list_instr〉 in
55  ! sigma_pol ← opt_to_res ? (msg Jump_expansion_failed) (jump_expansion' p');
56  let sigma ≝ λppc. \fst (sigma_pol ppc) in
57  let pol ≝ λppc. \snd (sigma_pol ppc) in
58  OK ? (assembly p sigma pol).
59cases daemon
60qed.*)
61
62include "RTLabs/semantics.ma".
63
64include "joint/Traces.ma".
65
66include "ASM/Fetch.ma". (* For load_code_memory only *)
67
68definition lift_cost_map_back_to_front :
69  ∀clight, code_memory, lbls.
70   (∀l. (∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l) +
71       ¬(∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l)) →
72  as_cost_map (ASM_abstract_status code_memory lbls) →
73  (Σl : costlabel.in_clight_program clight l) → ℕ ≝ λclight,code_memory,lbls,dec,k,l_sig.
74   match dec l_sig with
75   [ inl prf ⇒ k «l_sig, prf»
76   | inr _ ⇒ 0 (* labels not present in out code get 0 *)
77   ].
78
79definition compile : clight_program →
80  res (object_code × costlabel_map × (𝚺labelled:clight_program. ((Σl.in_clight_program labelled l) → ℕ))) ≝
81λp.
82  ! 〈init_cost,p',p〉 ← front_end p;
83  let p ≝ back_end p in
84    ! p ← assembler p;
85  let k ≝ ASM_cost_map p ? in
86  let k' ≝ lift_cost_map_back_to_front
87    p'
88    (load_code_memory (\fst p))
89    (\snd p)
90    ? k
91    in
92  return 〈p, ❬p', k'❭〉.
93  cases daemon
94  qed.
95
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