100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/***********************************************************************/
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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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/* Structured input/output */
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#ifndef __intext__
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#define __intext__
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#include "misc.h"
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#include "mlvalues.h"
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#include "io.h"
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/* Magic number */
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#define Intext_magic_number 0x8495A6BE
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/* Codes for the compact format */
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#define PREFIX_SMALL_BLOCK 0x80
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#define PREFIX_SMALL_INT 0x40
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#define PREFIX_SMALL_STRING 0x20
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#define CODE_INT8 0x0
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#define CODE_INT16 0x1
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#define CODE_INT32 0x2
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#define CODE_INT64 0x3
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#define CODE_SHARED8 0x4
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#define CODE_SHARED16 0x5
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#define CODE_SHARED32 0x6
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#define CODE_BLOCK32 0x8
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#define CODE_STRING8 0x9
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#define CODE_STRING32 0xA
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#define CODE_DOUBLE_BIG 0xB
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#define CODE_DOUBLE_LITTLE 0xC
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#define CODE_DOUBLE_ARRAY8_BIG 0xD
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#define CODE_DOUBLE_ARRAY8_LITTLE 0xE
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#define CODE_DOUBLE_ARRAY32_BIG 0xF
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#define CODE_DOUBLE_ARRAY32_LITTLE 0x7
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#define CODE_CODEPOINTER 0x10
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#define CODE_INFIXPOINTER 0x11
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#ifdef ARCH_BIG_ENDIAN
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#define CODE_DOUBLE_NATIVE CODE_DOUBLE_BIG
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#define CODE_DOUBLE_ARRAY8_NATIVE CODE_DOUBLE_ARRAY8_BIG
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#define CODE_DOUBLE_ARRAY32_NATIVE CODE_DOUBLE_ARRAY32_BIG
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#else
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#define CODE_DOUBLE_NATIVE CODE_DOUBLE_LITTLE
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#define CODE_DOUBLE_ARRAY8_NATIVE CODE_DOUBLE_ARRAY8_LITTLE
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#define CODE_DOUBLE_ARRAY32_NATIVE CODE_DOUBLE_ARRAY32_LITTLE
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#endif
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/* Initial sizes of data structures for extern */
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#ifndef INITIAL_EXTERN_BLOCK_SIZE
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#define INITIAL_EXTERN_BLOCK_SIZE 8192
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#endif
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#ifndef INITIAL_EXTERN_TABLE_SIZE
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#define INITIAL_EXTERN_TABLE_SIZE 2039
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#endif
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/* Maximal value of initial_ofs above which we should start again with
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initial_ofs = 1. Should be low enough to prevent rollover of initial_ofs
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next time we extern a structure. Since a structure contains at most
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2^N / (2 * sizeof(value)) heap objects (N = 32 or 64 depending on target),
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any value below 2^N - (2^N / (2 * sizeof(value))) suffices.
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We just take 2^(N-1) for simplicity. */
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#define INITIAL_OFFSET_MAX (1UL << (8 * sizeof(value) - 1))
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/* The entry points */
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void output_val (struct channel * chan, value v, value flags);
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value input_val (struct channel * chan);
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value input_val_from_string (value str, long ofs);
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/* Auxiliary stuff for sending code pointers */
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unsigned char * code_checksum (void);
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#ifndef NATIVE_CODE
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#include "fix_code.h"
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#define code_area_start ((char *) start_code)
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#define code_area_end ((char *) start_code + code_size)
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#else
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extern char * code_area_start, * code_area_end;
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#endif
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#endif
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