60 lines
2.5 KiB
OCaml
60 lines
2.5 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Caml Special Light *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1995 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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(* Generation of bytecode for .cmo files *)
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open Lambda
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open Instruct
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(* Relocation information *)
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type reloc_info =
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Reloc_literal of structured_constant (* structured constant *)
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| Reloc_getglobal of Ident.t (* reference to a global *)
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| Reloc_setglobal of Ident.t (* definition of a global *)
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| Reloc_primitive of string (* C primitive number *)
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(* Descriptor for compilation units *)
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type compilation_unit =
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{ cu_name: string; (* Name of compilation unit *)
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mutable cu_pos: int; (* Absolute position in file *)
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cu_codesize: int; (* Size of code block *)
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cu_reloc: (reloc_info * int) list; (* Relocation information *)
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cu_interface: Digest.t; (* CRC of interface implemented *)
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cu_imports: (string * Digest.t) list; (* Names and CRC of intfs imported *)
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cu_primitives: string list } (* Primitives declared inside *)
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(* Format of a .cmo file:
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Obj.magic number (Config.cmo_magic_number)
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absolute offset of compilation unit descriptor
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block of relocatable bytecode
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compilation unit descriptor *)
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val to_file: out_channel -> string -> Digest.t -> instruction list -> unit
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(* Arguments:
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channel on output file
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name of compilation unit implemented
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CRC of interface implemented
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list of instructions to emit *)
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val to_memory: instruction list -> instruction list ->
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string * int * (reloc_info * int) list
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(* Arguments:
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initialization code (terminated by STOP)
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function code
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Results:
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block of relocatable bytecode
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size of this block
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relocation information *)
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