ocaml/byterun/exec.h

63 lines
2.2 KiB
C

/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
/* exec.h : format of executable bytecode files */
#ifndef CAML_EXEC_H
#define CAML_EXEC_H
/* Executable bytecode files are composed of a number of sections,
identified by 4-character names. A table of contents at the
end of the file lists the section names along with their sizes,
in the order in which they appear in the file:
offset 0 ---> initial junk
data for section 1
data for section 2
...
data for section N
table of contents:
descriptor for section 1
...
descriptor for section N
trailer
end of file --->
*/
/* Structure of t.o.c. entries
Numerical quantities are 32-bit unsigned integers, big endian */
struct section_descriptor {
char name[4]; /* Section name */
uint32 len; /* Length of data in bytes */
};
/* Structure of the trailer. */
struct exec_trailer {
uint32 num_sections; /* Number of sections */
char magic[12]; /* The magic number */
struct section_descriptor * section; /* Not part of file */
};
#define TRAILER_SIZE (4+12)
/* Magic number for this release */
#define EXEC_MAGIC "Caml1999X008"
#endif /* CAML_EXEC_H */