86 lines
2.6 KiB
OCaml
86 lines
2.6 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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(* Automatique. Distributed only by permission. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Common functions for emitting assembly code *)
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let output_channel = ref stdout
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let emit_string s = output_string !output_channel s
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let emit_int n = output_string !output_channel (string_of_int n)
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let emit_char c = output_char !output_channel c
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let emit_printf fmt =
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Printf.fprintf !output_channel fmt
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let emit_symbol esc s =
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for i = 0 to String.length s - 1 do
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let c = s.[i] in
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match c with
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'A'..'Z' | 'a'..'z' | '0'..'9' | '_' ->
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output_char !output_channel c
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| _ ->
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Printf.fprintf !output_channel "%c%02x" esc (Char.code c)
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done
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let emit_string_literal s =
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let last_was_escape = ref false in
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emit_string "\"";
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for i = 0 to String.length s - 1 do
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let c = s.[i] in
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if c >= '0' && c <= '9' then
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if !last_was_escape
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then Printf.fprintf !output_channel "\\%o" (Char.code c)
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else output_char !output_channel c
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else if c >= ' ' && c <= '~' && c <> '"' (* '"' *) && c <> '\\' then begin
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output_char !output_channel c;
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last_was_escape := false
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end else begin
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Printf.fprintf !output_channel "\\%o" (Char.code c);
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last_was_escape := true
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end
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done;
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emit_string "\""
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let emit_string_directive directive s =
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let l = String.length s in
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if l = 0 then ()
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else if l < 80 then begin
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emit_string directive;
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emit_string_literal s;
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emit_char '\n'
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end else begin
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let i = ref 0 in
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while !i < l do
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let n = min (l - !i) 80 in
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emit_string directive;
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emit_string_literal (String.sub s !i n);
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emit_char '\n';
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i := !i + n
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done
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end
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let emit_bytes_directive directive s =
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let pos = ref 0 in
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for i = 0 to String.length s - 1 do
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if !pos = 0
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then emit_string directive
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else emit_char ',';
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emit_int(Char.code s.[i]);
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incr pos;
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if !pos >= 16 then begin emit_char '\n'; pos := 0 end
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done;
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if !pos > 0 then emit_char '\n'
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