source: src/ERTL/ERTLToLTL.ma @ 1191

Last change on this file since 1191 was 1191, checked in by mulligan, 9 years ago

ertl to ertl pass back where it was before the changes to joint

File size: 23.5 KB
Line 
1include "ERTL/ERTL.ma".
2include "LTL/LTL.ma".
3include "ERTL/spill.ma".
4include "ASM/Arithmetic.ma".
5
6(* XXX: change from O'Caml: former contents of ERTLToLTLI.ma *)
7
8inductive decision: Type[0] ≝
9  | decision_spill: Byte → decision
10  | decision_colour: Register → decision.
11 
12axiom lookup: register → decision.
13
14definition fresh_label ≝
15  λglobals: list ident.
16  λluniv.
17    fresh LabelTag luniv.
18
19definition add_graph ≝
20  λglobals.
21  λlabel.
22  λstmt: ltl_statement globals.
23  λgraph: ltl_statement_graph globals.
24    add LabelTag ? graph label stmt.
25
26definition generate ≝
27  λglobals: list ident.
28  λluniv.
29  λgraph: ltl_statement_graph globals.
30  λstmt: ltl_statement globals.
31  let 〈l, luniv〉 ≝ fresh_label globals luniv in
32  let graph ≝ add_graph globals l stmt graph in
33    〈l, graph, luniv〉.
34
35definition num_locals ≝
36  λglobals.
37  λint_fun.
38    colour_locals + (ertl_if_stacksize globals int_fun).
39
40definition stacksize ≝
41  λglobals.
42  λint_fun.
43    colour_locals + (ertl_if_stacksize globals int_fun).
44
45definition adjust_off ≝
46  λglobals.
47  λint_fun.
48  λoff.
49  let 〈ignore, int_off〉 ≝ half_add ? int_size off in
50  let 〈sub, ignore〉 ≝ sub_8_with_carry (bitvector_of_nat ? (num_locals globals int_fun)) int_off false in
51    sub.
52
53definition get_stack:
54 ∀globals. ertl_internal_function globals → graph (ltl_statement globals) → Register → Byte → label →
55  ltl_statement globals × (graph (ltl_statement globals)) × (universe LabelTag)
56
57  λglobals: list ident.
58  λint_fun.
59  λgraph: graph (ltl_statement (globals)).
60  λr.
61  λoff.
62  λl.
63    let off ≝ adjust_off globals int_fun off in
64    let luniv ≝ ertl_if_luniverse globals int_fun in
65    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc r)) l) in
66    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_load … globals it it it) l) in
67    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPH)) l) in
68    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op2 … globals Addc it RegisterSPH) l) in
69    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_int … globals RegisterA (zero ?)) l) in
70    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPL)) l) in
71    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op2 … globals Add it RegisterSPL) l) in
72      〈joint_st_sequential … ltl_params globals (joint_instr_int ? globals RegisterA off) l, graph, luniv〉.
73
74definition set_stack:
75  ∀globals. ertl_internal_function globals → ltl_statement_graph globals → Byte
76    → Register → label → ((ltl_statement globals) × (ltl_statement_graph globals) × (universe LabelTag)) ≝
77  λglobals: list ident.
78  λint_fun.
79  λgraph: graph (ltl_statement (globals)).
80  λoff.
81  λr.
82  λl.
83  let off ≝ adjust_off globals int_fun off in
84  let luniv ≝ ertl_if_luniverse globals int_fun in
85  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_store ltl_params … globals it it it) l) in
86  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc r)) l) in
87  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPH)) l) in
88  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op2 … globals Addc it RegisterSPH) l) in
89  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_int … globals RegisterA (zero ?)) l) in
90  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPL)) l) in
91  let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op2 … globals Add it RegisterSPL) l) in
92    〈joint_st_sequential … ltl_params globals (joint_instr_int ? globals RegisterA off) l, graph, luniv〉.
93
94definition write:
95  ∀globals: list ident. ertl_internal_function globals → ltl_statement_graph globals → register → label →
96    ? ≝
97  λglobals: list ident.
98  λint_fun.
99  λgraph.
100  λr.
101  λl.
102  match lookup r with
103  [ decision_spill off ⇒
104    let 〈stmt, graph, luniv〉 ≝ set_stack globals int_fun graph off RegisterSST l in
105    let 〈l, graph, int_fun〉 ≝ generate globals luniv graph stmt in
106      〈RegisterSST, l, graph, luniv〉
107  | decision_colour hwr ⇒
108    let luniv ≝ ertl_if_luniverse globals int_fun in
109      〈hwr, l, graph, luniv〉
110  ].
111
112definition read:
113  ∀globals: list ident. ertl_internal_function globals → ltl_statement_graph globals → register
114    → (Register → ltl_statement globals) → ? ≝
115  λglobals.
116  λint_fun.
117  λgraph.
118  λr.
119  λstmt.
120  match lookup r with
121  [ decision_colour hwr ⇒ generate globals (ertl_if_luniverse globals int_fun) graph (stmt hwr)
122  | decision_spill off ⇒
123    let temphwr ≝ RegisterSST in
124    let 〈l, graph, luniv〉 ≝ generate globals (ertl_if_luniverse globals int_fun) graph (stmt temphwr) in
125    let 〈stmt, graph, luniv〉 ≝ get_stack globals int_fun graph temphwr off l in
126      generate globals luniv graph stmt
127  ].
128
129definition move ≝
130  λglobals: list ident.
131  λint_fun.
132  λgraph: graph (ltl_statement globals).
133  λdest: decision.
134  λsrc: decision.
135  λl: label.
136  match dest with
137  [ decision_colour dest_hwr ⇒
138    match src with
139    [ decision_colour src_hwr ⇒
140      let luniv ≝ ertl_if_luniverse globals int_fun in
141      if eq_Register dest_hwr src_hwr then
142        〈joint_st_goto … globals l, graph, luniv〉
143      else
144        let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc dest_hwr)) l) in
145          〈joint_st_sequential … globals (joint_instr_move … ltl_params globals (to_acc src_hwr)) l, graph, luniv〉
146    | decision_spill src_off ⇒ get_stack globals int_fun graph dest_hwr src_off l
147    ]
148  | decision_spill dest_off ⇒
149    match src with
150    [ decision_colour src_hwr ⇒ set_stack globals int_fun graph dest_off src_hwr l
151    | decision_spill src_off ⇒
152      let luniv ≝ ertl_if_luniverse globals int_fun in
153      if eq_bv ? dest_off src_off then
154        〈joint_st_goto … globals l, graph, luniv〉
155      else
156        let temp_hwr ≝ RegisterSST in
157        let 〈stmt, graph, luniv〉 ≝ set_stack globals int_fun graph dest_off temp_hwr l in
158        let 〈l, graph, luniv〉 ≝ generate globals luniv graph stmt in
159          get_stack globals int_fun graph temp_hwr src_off l
160    ]
161  ].
162
163definition newframe ≝
164  λglobals: list ident.
165  λint_fun: ertl_internal_function globals.
166  λgraph: ltl_statement_graph globals.
167  λl: label.
168  if eq_nat (stacksize globals int_fun) 0 then
169    〈joint_st_goto ltl_params globals l, graph, (ertl_if_luniverse globals int_fun)〉
170  else
171    let luniv ≝ ertl_if_luniverse globals int_fun in
172    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_move … globals (from_acc RegisterSPH)) l) in
173    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_op2 … globals Sub it RegisterDPH) l) in
174    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_int … globals RegisterDPH (zero ?)) l) in
175    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_move … globals (to_acc RegisterSPH)) l) in
176    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_move … globals (from_acc RegisterSPL)) l) in
177    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_op2 … globals Sub it RegisterDPL) l) in
178    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_clear_carry … globals) l) in
179    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_int … globals RegisterDPL (bitvector_of_nat ? (stacksize globals int_fun))) l) in
180      〈joint_st_sequential ltl_params globals (joint_instr_move ltl_params globals (to_acc RegisterSPL)) l, graph, luniv〉.
181
182definition delframe ≝
183  λglobals.
184  λint_fun.
185  λgraph: graph (ltl_statement globals).
186  λl.
187  if eq_nat (stacksize globals int_fun) 0 then
188    〈joint_st_goto ltl_params globals l, graph, ertl_if_luniverse globals int_fun〉
189  else
190    let luniv ≝ ertl_if_luniverse globals int_fun in
191    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_move … globals (from_acc RegisterSPH)) l) in
192    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_op2 … globals Addc it RegisterSPH) l) in
193    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_int … globals RegisterA (zero ?)) l) in
194    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_move … globals (from_acc RegisterSPL)) l) in
195    let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential ltl_params globals (joint_instr_op2 … globals Add it RegisterSPL) l) in
196      〈joint_st_sequential ltl_params globals (joint_instr_int ltl_params globals RegisterA (bitvector_of_nat ? (stacksize globals int_fun))) l, graph, luniv〉.
197
198definition translate_statement ≝
199  λglobals: list ident.
200  λint_fun.
201  λgraph: ltl_statement_graph globals.
202  λstmt: ertl_statement globals.
203  match stmt with
204  [ joint_st_sequential seq l ⇒
205    let luniv ≝ ertl_if_luniverse globals int_fun in
206    match seq with
207    [ joint_instr_comment c ⇒
208      〈joint_st_sequential ltl_params globals (joint_instr_comment … globals c) l, graph, luniv〉
209    | joint_instr_cost_label cost_lbl ⇒
210      〈joint_st_sequential … globals (joint_instr_cost_label … globals cost_lbl) l, graph, luniv〉
211    | joint_instr_pop r ⇒
212      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph r l in
213      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
214        〈joint_st_sequential … globals (joint_instr_pop ltl_params globals it) l, graph, luniv〉
215    | joint_instr_push r ⇒
216      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_push … globals it) l) in
217      let int_fun ≝ set_luniverse globals int_fun luniv in
218      let 〈l, graph, luniv〉 ≝ read globals int_fun graph r (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
219        〈joint_st_goto ltl_params globals l, graph, luniv〉
220    | joint_instr_cond srcr lbl_true ⇒
221      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_cond … globals it lbl_true) l) in
222      let int_fun ≝ set_luniverse globals int_fun luniv in
223      let 〈l, graph, luniv〉 ≝ read globals int_fun graph srcr (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
224        〈joint_st_goto ltl_params globals l, graph, luniv〉
225    | joint_instr_call_id f ignore ⇒ 〈joint_st_sequential … globals (joint_instr_call_id … globals f ignore) l, graph, luniv〉
226    | joint_instr_store addr1 addr2 srcr ⇒
227      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_store … globals it it it) l) in
228      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterST1)) l) in
229      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPH)) l) in
230      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterST0)) l) in
231      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPL)) l) in
232      let int_fun ≝ set_luniverse globals int_fun luniv in
233      let 〈l, graph, luniv〉 ≝ read globals int_fun graph addr1 (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
234      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterST0)) l) in
235      let int_fun ≝ set_luniverse globals int_fun luniv in
236      let 〈l, graph, luniv〉 ≝ read globals int_fun graph addr2 (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
237      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterST1)) l) in
238      let 〈l, graph, luniv〉 ≝ read globals int_fun graph srcr (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
239        〈joint_st_goto ltl_params globals l, graph, luniv〉
240    | joint_instr_load destr addr1 addr2 ⇒
241      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph destr l in
242      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
243      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_load … globals it it it) l) in
244      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPH)) l) in
245      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterST0)) l) in
246      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterDPL)) l) in
247      let int_fun ≝ set_luniverse globals int_fun luniv in
248      let 〈l, graph, luniv〉 ≝ read globals int_fun graph addr1 (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
249      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterST0)) l) in
250      let int_fun ≝ set_luniverse globals int_fun luniv in
251      let 〈l, graph, luniv〉 ≝ read globals int_fun graph addr2 (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
252        〈joint_st_goto ltl_params globals l, graph, luniv〉
253    | joint_instr_clear_carry ⇒ 〈joint_st_sequential … globals (joint_instr_clear_carry … globals) l, graph, luniv〉
254    | joint_instr_set_carry ⇒ 〈joint_st_sequential … globals (joint_instr_set_carry … globals) l, graph, luniv〉
255    | joint_instr_op2 op2 destr srcr ⇒
256      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph destr l in
257      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
258      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op2 … globals op2 it RegisterB) l) in
259      let luniv ≝ set_luniverse globals int_fun luniv in
260      let 〈l, graph, luniv〉 ≝ read globals int_fun graph destr (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
261      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterB)) l) in
262      let luniv ≝ set_luniverse globals int_fun luniv in
263      let 〈l, graph, luniv〉 ≝ read globals int_fun graph srcr (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
264        〈joint_st_goto ltl_params globals l, graph, luniv〉
265    | joint_instr_op1 op1 acc_a ⇒
266      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph acc_a l in
267      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
268      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_op1 … globals op1 it) l) in
269      let int_fun ≝ set_luniverse globals int_fun luniv in
270      let 〈l, graph, luniv〉 ≝ read globals int_fun graph acc_a (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
271        〈joint_st_goto ltl_params globals l, graph, luniv〉
272    | joint_instr_int r i ⇒
273      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph r l in
274        〈joint_st_sequential ltl_params globals (joint_instr_int … globals hdw i) l, graph, luniv〉
275    | joint_instr_opaccs opaccs acc_a_reg acc_b_reg ⇒
276      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph acc_a_reg l in
277      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
278      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_opaccs … globals opaccs it it) l) in
279      let luniv ≝ set_luniverse globals int_fun luniv in
280      let 〈l, graph, luniv〉 ≝ read globals int_fun graph acc_a_reg (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
281      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterB)) l) in
282      let luniv ≝ set_luniverse globals int_fun luniv in
283      let 〈l, graph, luniv〉 ≝ read globals int_fun graph acc_b_reg (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
284      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_goto … globals l) in
285      let luniv ≝ set_luniverse globals int_fun luniv in
286      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph acc_b_reg l in
287      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw)) l) in
288      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterB)) l) in
289      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_opaccs … globals opaccs it it) l) in
290      let luniv ≝ set_luniverse globals int_fun luniv in
291      let 〈l, graph, luniv〉 ≝ read globals int_fun graph acc_a_reg (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
292      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc RegisterB)) l) in
293      let luniv ≝ set_luniverse globals int_fun luniv in
294      let 〈l, graph, luniv〉 ≝ read globals int_fun graph acc_b_reg (λhdw. joint_st_sequential … globals (joint_instr_move … globals (to_acc hdw)) l) in
295        〈joint_st_goto ltl_params globals l, graph, luniv〉
296    | joint_instr_move pair_regs ⇒
297      let regl ≝ \fst pair_regs in
298      let regr ≝ \snd pair_regs in
299      match regl with
300      [ pseudo p1  ⇒
301        match regr with
302        [ pseudo p2  ⇒ move globals int_fun graph (lookup p1) (lookup p2) l
303        | hardware h ⇒ move globals int_fun graph (lookup p1) (decision_colour h) l
304        ]
305      | hardware h1 ⇒
306        match regr with
307        [ pseudo p    ⇒ move globals int_fun graph (decision_colour h1) (lookup p) l
308        | hardware h2 ⇒
309          let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc h1)) l) in
310            〈joint_st_sequential ltl_params globals (joint_instr_move ltl_params globals (to_acc h2)) l, graph, luniv〉
311        ]
312      ]
313    | joint_instr_address lbl prf dpl dph ⇒
314      let 〈hdw1, l, graph, luniv〉 ≝ write globals int_fun graph dph l in
315      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw1)) l) in
316      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterDPH)) l) in
317      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_address … globals lbl prf it it) l) in
318      let int_fun ≝ set_luniverse globals int_fun luniv in
319      let 〈hdw2, l, graph, luniv〉 ≝ write globals int_fun graph dpl l in
320      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (from_acc hdw2)) l) in
321      let 〈l, graph, luniv〉 ≝ generate globals luniv graph (joint_st_sequential … globals (joint_instr_move … globals (to_acc RegisterDPL)) l) in
322        〈joint_st_sequential ltl_params globals (joint_instr_address … globals lbl prf it it) l, graph, luniv〉
323    ]
324  | joint_st_return ⇒ 〈joint_st_return … globals, graph, ertl_if_luniverse globals int_fun〉
325  | joint_st_goto l ⇒ 〈joint_st_goto … globals l, graph, ertl_if_luniverse globals int_fun〉
326  | joint_st_extension ext ⇒
327    match ext with
328    [ ertl_st_ext_new_frame l ⇒ newframe globals int_fun graph l
329    | ertl_st_ext_del_frame l ⇒ delframe globals int_fun graph l
330    | ertl_st_ext_frame_size r l ⇒
331      let 〈hdw, l, graph, luniv〉 ≝ write globals int_fun graph r l in
332        〈joint_st_sequential … globals (joint_instr_int ltl_params globals hdw (bitvector_of_nat ? (stacksize globals int_fun))) l, graph, luniv〉
333    ]
334  ].
335
336definition translate_internal ≝
337  λglobals: list ident.
338  λf.
339  λint_fun: ertl_internal_function.
340  let lookup ≝ λr.
341    match lookup r with
342    | colour_spill ->
343        ERTLToLTLI.Spill (Interference.Vertex.Map.find (Interference.lookup H.graph r) S.coloring)
344    | colour_colour color ->
345        ERTLToLTLI.Color color
346  in
347  let locals ≝ colour_locals + (ertl_if_stacksize int_fun) in
348  let stacksize ≝ (ertl_if_params int_fun) + locals in
349    mk_ltl_internal_function
350      globals
351      (ertl_if_luniverse int_fun)
352      (ertl_if_runiverse int_fun)
353      stacksize.
354
355  let () =
356    Label.Map.iter (fun label stmt ->
357      let stmt =
358        match Liveness.eliminable (G.liveafter label) stmt with
359        | Some successor ->
360            LTL.St_skip successor
361        | None ->
362            I.translate_statement stmt
363      in
364      graph := Label.Map.add label stmt !graph
365    ) int_fun.ERTL.f_graph
366  in
367
368definition translate_funct ≝
369  λname_def.
370  let 〈name, def〉 ≝ name_def in
371  let def' ≝
372    match def with
373    [ Internal def ⇒ Internal ? (translate_internal name def)
374    | External def ⇒ External ? def
375    ]
376  in
377    〈name, def'〉.
378
379definition translate ≝
380  λp.
381  let functs' ≝ map ? ? translate_funct (ertl_pr_functs p) in
382    mk_ltl_program (ertl_pr_globals p) functs' (ertl_pr_main p).
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