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|
(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris-Rocquencourt *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(** Pretty-printers for RTL code *)
open Printf
open Camlcoq
open Datatypes
open Maps
open AST
open RTLBlock
open PrintAST
(* Printing of RTL code *)
let reg pp r =
fprintf pp "x%d" (P.to_int r)
let rec regs pp = function
| [] -> ()
| [r] -> reg pp r
| r1::rl -> fprintf pp "%a, %a" reg r1 regs rl
let ros pp = function
| Coq_inl r -> reg pp r
| Coq_inr s -> fprintf pp "\"%s\"" (extern_atom s)
let print_bblock_body pp i =
fprintf pp "\t\t";
match i with
| RBnop -> fprintf pp "nop\n"
| RBop(op, ls, dst) ->
fprintf pp "%a = %a\n"
reg dst (PrintOp.print_operation reg) (op, ls)
| RBload(chunk, addr, args, dst) ->
fprintf pp "%a = %s[%a]\n"
reg dst (name_of_chunk chunk)
(PrintOp.print_addressing reg) (addr, args)
| RBstore(chunk, addr, args, src) ->
fprintf pp "%s[%a] = %a\n"
(name_of_chunk chunk)
(PrintOp.print_addressing reg) (addr, args)
reg src
let print_bblock_exit pp i =
fprintf pp "\t\t";
match i with
| Some(RBcall(_, fn, args, res, _)) ->
fprintf pp "%a = %a(%a)\n"
reg res ros fn regs args;
| Some(RBtailcall(_, fn, args)) ->
fprintf pp "tailcall %a(%a)\n"
ros fn regs args
| Some(RBbuiltin(ef, args, res, _)) ->
fprintf pp "%a = %s(%a)\n"
(print_builtin_res reg) res
(name_of_external ef)
(print_builtin_args reg) args
| Some(RBcond(cond, args, s1, s2)) ->
fprintf pp "if (%a) goto %d else goto %d\n"
(PrintOp.print_condition reg) (cond, args)
(P.to_int s1) (P.to_int s2)
| Some(RBjumptable(arg, tbl)) ->
let tbl = Array.of_list tbl in
fprintf pp "jumptable (%a)\n" reg arg;
for i = 0 to Array.length tbl - 1 do
fprintf pp "\tcase %d: goto %d\n" i (P.to_int tbl.(i))
done
| Some(RBreturn None) ->
fprintf pp "return\n"
| Some(RBreturn (Some arg)) ->
fprintf pp "return %a\n" reg arg
| Some(RBgoto n) ->
fprintf pp "goto %d\n" (P.to_int n)
| None -> fprintf pp "\n"
let print_bblock pp (pc, i) =
fprintf pp "%5d:{\n" pc;
List.iter (print_bblock_body pp) i.bb_body;
print_bblock_exit pp i.bb_exit;
fprintf pp "\t}\n\n"
let print_function pp id f =
fprintf pp "%s(%a) {\n" (extern_atom id) regs f.fn_params;
let instrs =
List.sort
(fun (pc1, _) (pc2, _) -> compare pc2 pc1)
(List.rev_map
(fun (pc, i) -> (P.to_int pc, i))
(PTree.elements f.fn_code)) in
List.iter (print_bblock pp) instrs;
fprintf pp "}\n\n"
let print_globdef pp (id, gd) =
match gd with
| Gfun(Internal f) -> print_function pp id f
| _ -> ()
let print_program pp (prog: program) =
List.iter (print_globdef pp) prog.prog_defs
let destination : string option ref = ref None
let print_if prog =
match !destination with
| None -> ()
| Some f ->
let oc = open_out f in
print_program oc prog;
close_out oc
|
