source: src/compiler.ma @ 2709

Last change on this file since 2709 was 2709, checked in by sacerdot, 8 years ago

LINToAsm repaired

File size: 3.1 KB
RevLine 
[1991]1include "Clight/label.ma".
[2019]2include "Clight/SimplifyCasts.ma".
[2475]3include "Clight/switchRemoval.ma".
[1991]4include "Clight/toCminor.ma".
5include "Cminor/initialisation.ma".
6include "Cminor/toRTLabs.ma".
7
[2319]8definition front_end : clight_program → res (costlabel × clight_program × RTLabs_program) ≝
[1991]9λp.
[2475]10  let p ≝ program_switch_removal p in
[2319]11  let 〈p',init_cost〉 ≝ clight_label p in
[2001]12  let p ≝ simplify_program p' in
[1991]13  ! p ← clight_to_cminor p;
[2319]14  let p ≝ cminor_to_rtlabs init_cost p in
15  return 〈init_cost,p',p〉.
[1995]16
[2494]17include "RTLabs/RTLabsToRTL.ma".
[1995]18include "RTL/RTLToERTL.ma".
[2697]19include "ERTL/ERTLToERTLptr.ma".
20include "ERTLptr/ERTLptrToLTL.ma".
[2705]21include "LTL/LTLToLIN.ma".
[1995]22include "LIN/LINToASM.ma".
23
[2700]24axiom compute_fixpoint : fixpoint_computer.
25axiom colour_graph : coloured_graph_computer.
[2505]26
[1995]27definition back_end : RTLabs_program → pseudo_assembly_program ≝
28λp.
29  let p ≝ rtlabs_to_rtl p in
30  let p ≝ rtl_to_ertl p in
[2697]31  let p ≝ ertl_to_ertlptr p in
[2700]32  let p ≝ ertlptr_to_ltl compute_fixpoint colour_graph p in (* TODO: abstract over colouring *)
[1995]33  let p ≝ ltl_to_lin p in
34          lin_to_asm p.
35
[2709]36(* JHM: minimum needed for assembler to typecheck *)
37(* JHM: moved from ASMCostsSplit.ma               *)
38(* JHM: should move elsewhere in ASM/             *)
[2512]39definition object_code ≝ list Byte.
40definition costlabel_map ≝ BitVectorTrie costlabel 16.
[1995]41
[2702]42include "ASM/Policy.ma".
43(* Equivalent to the inclusion of ASM/Policy.ma, waiting for that slow
44   file to compile
45  include "ASM/PolicyStep.ma".
46  axiom jump_expansion': ∀program:preamble × (Σl:list labelled_instruction.lt (S (|l|)) 2^16 ∧ is_well_labelled_p l).
[2700]47 option (Σsigma_policy:(Word → Word) × (Word → bool).
48   let 〈sigma,policy〉≝ sigma_policy in
[2702]49   sigma_policy_specification 〈\fst program,\snd program〉 sigma policy). *)
[2505]50
[1995]51definition assembler : pseudo_assembly_program → res (object_code × costlabel_map) ≝
52λp.
53  let 〈preamble, list_instr〉 ≝ p in
54  (* TODO: fail if p is too large. *)
55  let p' ≝ 〈preamble, list_instr〉 in
56  ! sigma_pol ← opt_to_res ? (msg Jump_expansion_failed) (jump_expansion' p');
[2702]57  let sigma ≝ λppc. \fst sigma_pol ppc in
58  let pol ≝ λppc. \snd sigma_pol ppc in
[1995]59  OK ? (assembly p sigma pol).
60cases daemon
[2497]61qed.
[1995]62
[2505]63include "ASM/ASMCosts.ma".
64
[2001]65definition lift_cost_map_back_to_front :
[2399]66  ∀clight, code_memory, lbls.
[2505]67    let abstat ≝ ASM_abstract_status code_memory lbls in
68   (∀l. (as_cost_labelled abstat l) + ¬(as_cost_labelled abstat l)) →
69  as_cost_map abstat → clight_cost_map clight ≝
70  λclight,code_memory,lbls,dec,k,asm_cost_map.
71  lift_sigma_map_id … 0 (* labels not present in out code get 0 *)
[2508]72    dec k asm_cost_map.
[2001]73
[2505]74include "ASM/ASMCostsSplit.ma".
75
[2001]76definition compile : clight_program →
[2508]77  res (object_code × costlabel_map × (𝚺labelled:clight_program. clight_cost_map labelled)) ≝
[1995]78λp.
[2320]79  ! 〈init_cost,p',p〉 ← front_end p;
[1995]80  let p ≝ back_end p in
[2001]81    ! p ← assembler p;
82  let k ≝ ASM_cost_map p ? in
83  let k' ≝ lift_cost_map_back_to_front
[2399]84    p'
[2001]85    (load_code_memory (\fst p))
86    (\snd p)
87    ? k
88    in
[2399]89  return 〈p, ❬p', k'❭〉.
[2001]90  cases daemon
[2709]91qed.
Note: See TracBrowser for help on using the repository browser.