205 lines
6.8 KiB
OCaml
205 lines
6.8 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Pretty-printing of C-- code *)
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open Format
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open Cmm
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let machtype_component ppf = function
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| Addr -> fprintf ppf "addr"
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| Int -> fprintf ppf "int"
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| Float -> fprintf ppf "float"
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let machtype ppf mty =
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match Array.length mty with
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| 0 -> fprintf ppf "unit"
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| n -> machtype_component ppf mty.(0);
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for i = 1 to n-1 do
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fprintf ppf "*%a" machtype_component mty.(i)
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done
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let comparison = function
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| Ceq -> "=="
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| Cne -> "!="
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| Clt -> "<"
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| Cle -> "<="
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| Cgt -> ">"
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| Cge -> ">="
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let chunk = function
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| Byte_unsigned -> "unsigned int8"
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| Byte_signed -> "signed int8"
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| Sixteen_unsigned -> "unsigned int16"
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| Sixteen_signed -> "signed int16"
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| Thirtytwo_unsigned -> "unsigned int32"
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| Thirtytwo_signed -> "signed int32"
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| Word -> ""
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| Single -> "float32"
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| Double -> "float64"
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| Double_u -> "float64u"
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let operation = function
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| Capply(ty, d) -> "app" ^ Debuginfo.to_string d
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| Cextcall(lbl, ty, alloc, d) ->
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Printf.sprintf "extcall \"%s\"%s" lbl (Debuginfo.to_string d)
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| Cload Word -> "load"
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| Cload c -> Printf.sprintf "load %s" (chunk c)
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| Calloc -> "alloc"
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| Cstore Word -> "store"
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| Cstore c -> Printf.sprintf "store %s" (chunk c)
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| Caddi -> "+"
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| Csubi -> "-"
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| Cmuli -> "*"
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| Cdivi -> "/"
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| Cmodi -> "mod"
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| Cand -> "and"
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| Cor -> "or"
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| Cxor -> "xor"
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| Clsl -> "<<"
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| Clsr -> ">>u"
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| Casr -> ">>s"
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| Ccmpi c -> comparison c
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| Cadda -> "+a"
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| Csuba -> "-a"
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| Ccmpa c -> Printf.sprintf "%sa" (comparison c)
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| Cnegf -> "~f"
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| Cabsf -> "absf"
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| Caddf -> "+f"
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| Csubf -> "-f"
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| Cmulf -> "*f"
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| Cdivf -> "/f"
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| Cfloatofint -> "floatofint"
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| Cintoffloat -> "intoffloat"
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| Ccmpf c -> Printf.sprintf "%sf" (comparison c)
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| Craise d -> "raise" ^ Debuginfo.to_string d
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| Ccheckbound d -> "checkbound" ^ Debuginfo.to_string d
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let rec expr ppf = function
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| Cconst_int n -> fprintf ppf "%i" n
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| Cconst_natint n -> fprintf ppf "%s" (Nativeint.to_string n)
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| Cconst_float s -> fprintf ppf "%s" s
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| Cconst_symbol s -> fprintf ppf "\"%s\"" s
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| Cconst_pointer n -> fprintf ppf "%ia" n
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| Cconst_natpointer n -> fprintf ppf "%sa" (Nativeint.to_string n)
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| Cvar id -> Ident.print ppf id
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| Clet(id, def, (Clet(_, _, _) as body)) ->
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let print_binding id ppf def =
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fprintf ppf "@[<2>%a@ %a@]" Ident.print id expr def in
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let rec in_part ppf = function
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| Clet(id, def, body) ->
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fprintf ppf "@ %a" (print_binding id) def;
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in_part ppf body
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| exp -> exp in
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fprintf ppf "@[<2>(let@ @[<1>(%a" (print_binding id) def;
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let exp = in_part ppf body in
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fprintf ppf ")@]@ %a)@]" sequence exp
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| Clet(id, def, body) ->
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fprintf ppf
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"@[<2>(let@ @[<2>%a@ %a@]@ %a)@]"
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Ident.print id expr def sequence body
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| Cassign(id, exp) ->
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fprintf ppf "@[<2>(assign @[<2>%a@ %a@])@]" Ident.print id expr exp
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| Ctuple el ->
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let tuple ppf el =
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let first = ref true in
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List.iter
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(fun e ->
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if !first then first := false else fprintf ppf "@ ";
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expr ppf e)
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el in
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fprintf ppf "@[<1>[%a]@]" tuple el
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| Cop(op, el) ->
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fprintf ppf "@[<2>(%s" (operation op);
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List.iter (fun e -> fprintf ppf "@ %a" expr e) el;
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begin match op with
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| Capply (mty, _) -> fprintf ppf "@ %a" machtype mty
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| Cextcall(_, mty, _, _) -> fprintf ppf "@ %a" machtype mty
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| _ -> ()
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end;
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fprintf ppf ")@]"
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| Csequence(e1, e2) ->
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fprintf ppf "@[<2>(seq@ %a@ %a)@]" sequence e1 sequence e2
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| Cifthenelse(e1, e2, e3) ->
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fprintf ppf "@[<2>(if@ %a@ %a@ %a)@]" expr e1 expr e2 expr e3
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| Cswitch(e1, index, cases) ->
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let print_case i ppf =
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for j = 0 to Array.length index - 1 do
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if index.(j) = i then fprintf ppf "case %i:" j
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done in
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let print_cases ppf =
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for i = 0 to Array.length cases - 1 do
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fprintf ppf "@ @[<2>%t@ %a@]" (print_case i) sequence cases.(i)
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done in
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fprintf ppf "@[<v 0>@[<2>(switch@ %a@ @]%t)@]" expr e1 print_cases
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| Cloop e ->
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fprintf ppf "@[<2>(loop@ %a)@]" sequence e
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| Ccatch(i, ids, e1, e2) ->
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fprintf ppf
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"@[<2>(catch@ %a@;<1 -2>with(%d%a)@ %a)@]"
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sequence e1 i
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(fun ppf ids ->
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List.iter
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(fun id -> fprintf ppf " %a" Ident.print id)
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ids) ids
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sequence e2
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| Cexit (i, el) ->
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fprintf ppf "@[<2>(exit %d" i ;
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List.iter (fun e -> fprintf ppf "@ %a" expr e) el;
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fprintf ppf ")@]"
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| Ctrywith(e1, id, e2) ->
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fprintf ppf "@[<2>(try@ %a@;<1 -2>with@ %a@ %a)@]"
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sequence e1 Ident.print id sequence e2
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and sequence ppf = function
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| Csequence(e1, e2) -> fprintf ppf "%a@ %a" sequence e1 sequence e2
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| e -> expression ppf e
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and expression ppf e = fprintf ppf "%a" expr e
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let fundecl ppf f =
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let print_cases ppf cases =
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let first = ref true in
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List.iter
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(fun (id, ty) ->
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if !first then first := false else fprintf ppf "@ ";
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fprintf ppf "%a: %a" Ident.print id machtype ty)
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cases in
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fprintf ppf "@[<1>(function %s@;<1 4>@[<1>(%a)@]@ @[%a@])@]@."
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f.fun_name print_cases f.fun_args sequence f.fun_body
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let data_item ppf = function
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| Cdefine_symbol s -> fprintf ppf "\"%s\":" s
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| Cdefine_label l -> fprintf ppf "L%i:" l
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| Cglobal_symbol s -> fprintf ppf "global \"%s\"" s
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| Cint8 n -> fprintf ppf "byte %i" n
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| Cint16 n -> fprintf ppf "int16 %i" n
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| Cint32 n -> fprintf ppf "int32 %s" (Nativeint.to_string n)
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| Cint n -> fprintf ppf "int %s" (Nativeint.to_string n)
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| Csingle f -> fprintf ppf "single %s" f
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| Cdouble f -> fprintf ppf "double %s" f
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| Csymbol_address s -> fprintf ppf "addr \"%s\"" s
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| Clabel_address l -> fprintf ppf "addr L%i" l
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| Cstring s -> fprintf ppf "string \"%s\"" s
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| Cskip n -> fprintf ppf "skip %i" n
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| Calign n -> fprintf ppf "align %i" n
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let data ppf dl =
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let items ppf = List.iter (fun d -> fprintf ppf "@ %a" data_item d) dl in
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fprintf ppf "@[<hv 1>(data%t)@]" items
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let phrase ppf = function
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| Cfunction f -> fundecl ppf f
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| Cdata dl -> data ppf dl
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