source: src/compiler.ma @ 2638

Last change on this file since 2638 was 2581, checked in by mckinna, 8 years ago

commented out back end entirely until knock-on effects of changes to Joint and RTL etc. are worked through

File size: 2.9 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(*
19include "RTLabs/RTLabsToRTL.ma".
20include "RTL/RTLToERTL.ma".
21include "ERTL/ERTLToLTL.ma".
22include "LTL/LTLToLIN.ma".
23include "LIN/LINToASM.ma".
24
25(* these are already defined in utilities/fixpoint.ma and ERTL/Interference.ma
26axiom the_fixpoint : fixpoint.
27axiom build : ∀valuation. coloured_graph valuation.
28*)
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
41(* JHM: minimum needed for assembler axiom to typecheck *)
42(* JHM: moved from ASMCostsSplit.ma                     *)
43(* JHM: should move elsewhere in ASM/                   *)
44definition object_code ≝ list Byte.
45definition costlabel_map ≝ BitVectorTrie costlabel 16.
46
47axiom assembler : pseudo_assembly_program → res (object_code × costlabel_map).
48
49(* include "ASM/Policy.ma".
50
51axiom Jump_expansion_failed : String.
52
53definition assembler : pseudo_assembly_program → res (object_code × costlabel_map) ≝
54λp.
55  let 〈preamble, list_instr〉 ≝ p in
56  (* TODO: fail if p is too large. *)
57  let p' ≝ 〈preamble, list_instr〉 in
58  ! sigma_pol ← opt_to_res ? (msg Jump_expansion_failed) (jump_expansion' p');
59  let sigma ≝ λppc. \fst (sigma_pol ppc) in
60  let pol ≝ λppc. \snd (sigma_pol ppc) in
61  OK ? (assembly p sigma pol).
62cases daemon
63qed.
64*)
65
66include "ASM/ASMCosts.ma".
67
68definition lift_cost_map_back_to_front :
69  ∀clight, code_memory, lbls.
70    let abstat ≝ ASM_abstract_status code_memory lbls in
71   (∀l. (as_cost_labelled abstat l) + ¬(as_cost_labelled abstat l)) →
72  as_cost_map abstat → clight_cost_map clight ≝
73  λclight,code_memory,lbls,dec,k,asm_cost_map.
74  lift_sigma_map_id … 0 (* labels not present in out code get 0 *)
75    dec k asm_cost_map.
76
77include "ASM/ASMCostsSplit.ma".
78
79definition compile : clight_program →
80  res (object_code × costlabel_map × (𝚺labelled:clight_program. clight_cost_map labelled)) ≝
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.
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