source: src/compiler.ma @ 2399

Last change on this file since 2399 was 2399, checked in by campbell, 7 years ago

Fill in some details about the statement of correctness.

File size: 2.8 KB
RevLine 
[1991]1
2include "Clight/label.ma".
[2019]3include "Clight/SimplifyCasts.ma".
[2291]4(*include "Clight/switchRemoval.ma".*)
[1991]5include "Clight/toCminor.ma".
6include "Cminor/initialisation.ma".
7include "Cminor/toRTLabs.ma".
8
[2319]9definition front_end : clight_program → res (costlabel × clight_program × RTLabs_program) ≝
[1991]10λp.
[2319]11  let 〈p',init_cost〉 ≝ clight_label p in
[2001]12  let p ≝ simplify_program p' in
[2291]13(*  let p ≝ program_switch_removal p in*)
[1991]14  ! p ← clight_to_cminor p;
[2319]15  let p ≝ cminor_to_rtlabs init_cost p in
16  return 〈init_cost,p',p〉.
[1995]17
18include "RTLabs/RTLabsToRTL.ma".
19include "RTL/RTLToERTL.ma".
20include "ERTL/ERTLToLTL.ma".
21include "LTL/LTLToLIN.ma".
22include "LIN/LINToASM.ma".
23
[2286]24(* these are already defined in utilities/fixpoint.ma and ERTL/Interference.ma
[1995]25axiom the_fixpoint : fixpoint.
26axiom build : ∀valuation. coloured_graph valuation.
[2286]27*)
[1995]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
38include "ASM/Policy.ma".
39
40axiom Jump_expansion_failed : String.
41
[2001]42include "ASM/ASMCostsSplit.ma".
43
[2205]44axiom assembler : pseudo_assembly_program → res (object_code × costlabel_map). (*
[1995]45definition assembler : pseudo_assembly_program → res (object_code × costlabel_map) ≝
46λp.
47  let 〈preamble, list_instr〉 ≝ p in
48  (* TODO: fail if p is too large. *)
49  let p' ≝ 〈preamble, list_instr〉 in
50  ! sigma_pol ← opt_to_res ? (msg Jump_expansion_failed) (jump_expansion' p');
51  let sigma ≝ λppc. \fst (sigma_pol ppc) in
52  let pol ≝ λppc. \snd (sigma_pol ppc) in
53  OK ? (assembly p sigma pol).
54cases daemon
[2205]55qed.*)
[1995]56
[2001]57include "RTLabs/semantics.ma".
58
[2286]59include "joint/Traces.ma".
[2001]60
[2116]61include "ASM/Fetch.ma". (* For load_code_memory only *)
[2001]62
63definition lift_cost_map_back_to_front :
[2399]64  ∀clight, code_memory, lbls.
[2001]65   (∀l. (∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l) +
66       ¬(∃pc.as_label_of_pc (ASM_abstract_status code_memory lbls) pc = Some … l)) →
67  as_cost_map (ASM_abstract_status code_memory lbls) →
[2399]68  (Σl : costlabel.in_clight_program clight l) → ℕ ≝ λclight,code_memory,lbls,dec,k,l_sig.
[2001]69   match dec l_sig with
70   [ inl prf ⇒ k «l_sig, prf»
71   | inr _ ⇒ 0 (* labels not present in out code get 0 *)
72   ].
73
74definition compile : clight_program →
[2399]75  res (object_code × costlabel_map × (𝚺labelled:clight_program. ((Σl.in_clight_program labelled l) → ℕ))) ≝
[1995]76λp.
[2320]77  ! 〈init_cost,p',p〉 ← front_end p;
[1995]78  let p ≝ back_end p in
[2001]79    ! p ← assembler p;
80  let k ≝ ASM_cost_map p ? in
81  let k' ≝ lift_cost_map_back_to_front
[2399]82    p'
[2001]83    (load_code_memory (\fst p))
84    (\snd p)
85    ? k
86    in
[2399]87  return 〈p, ❬p', k'❭〉.
[2001]88  cases daemon
89  qed.
[1995]90
Note: See TracBrowser for help on using the repository browser.