175 lines
6.4 KiB
C
175 lines
6.4 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. */
|
|
/* */
|
|
/***********************************************************************/
|
|
|
|
/* $Id$ */
|
|
|
|
/* Structured input/output */
|
|
|
|
#ifndef __intext__
|
|
#define __intext__
|
|
|
|
#include "misc.h"
|
|
#include "mlvalues.h"
|
|
|
|
/* <private> */
|
|
#include "io.h"
|
|
|
|
/* Magic number */
|
|
|
|
#define Intext_magic_number 0x8495A6BE
|
|
|
|
/* Codes for the compact format */
|
|
|
|
#define PREFIX_SMALL_BLOCK 0x80
|
|
#define PREFIX_SMALL_INT 0x40
|
|
#define PREFIX_SMALL_STRING 0x20
|
|
#define CODE_INT8 0x0
|
|
#define CODE_INT16 0x1
|
|
#define CODE_INT32 0x2
|
|
#define CODE_INT64 0x3
|
|
#define CODE_SHARED8 0x4
|
|
#define CODE_SHARED16 0x5
|
|
#define CODE_SHARED32 0x6
|
|
#define CODE_BLOCK32 0x8
|
|
#define CODE_BLOCK64 0x13
|
|
#define CODE_STRING8 0x9
|
|
#define CODE_STRING32 0xA
|
|
#define CODE_DOUBLE_BIG 0xB
|
|
#define CODE_DOUBLE_LITTLE 0xC
|
|
#define CODE_DOUBLE_ARRAY8_BIG 0xD
|
|
#define CODE_DOUBLE_ARRAY8_LITTLE 0xE
|
|
#define CODE_DOUBLE_ARRAY32_BIG 0xF
|
|
#define CODE_DOUBLE_ARRAY32_LITTLE 0x7
|
|
#define CODE_CODEPOINTER 0x10
|
|
#define CODE_INFIXPOINTER 0x11
|
|
#define CODE_CUSTOM 0x12
|
|
|
|
#if ARCH_FLOAT_ENDIANNESS == 0x76543210
|
|
#define CODE_DOUBLE_NATIVE CODE_DOUBLE_BIG
|
|
#define CODE_DOUBLE_ARRAY8_NATIVE CODE_DOUBLE_ARRAY8_BIG
|
|
#define CODE_DOUBLE_ARRAY32_NATIVE CODE_DOUBLE_ARRAY32_BIG
|
|
#else
|
|
#define CODE_DOUBLE_NATIVE CODE_DOUBLE_LITTLE
|
|
#define CODE_DOUBLE_ARRAY8_NATIVE CODE_DOUBLE_ARRAY8_LITTLE
|
|
#define CODE_DOUBLE_ARRAY32_NATIVE CODE_DOUBLE_ARRAY32_LITTLE
|
|
#endif
|
|
|
|
/* Initial sizes of data structures for extern */
|
|
|
|
#ifndef INITIAL_EXTERN_BLOCK_SIZE
|
|
#define INITIAL_EXTERN_BLOCK_SIZE 8192
|
|
#endif
|
|
|
|
#ifndef INITIAL_EXTERN_TABLE_SIZE_LOG2
|
|
#define INITIAL_EXTERN_TABLE_SIZE_LOG2 11
|
|
#endif
|
|
|
|
#define INITIAL_EXTERN_TABLE_SIZE (1UL << INITIAL_EXTERN_TABLE_SIZE_LOG2)
|
|
|
|
/* Maximal value of initial_ofs above which we should start again with
|
|
initial_ofs = 1. Should be low enough to prevent rollover of initial_ofs
|
|
next time we extern a structure. Since a structure contains at most
|
|
2^N / (2 * sizeof(value)) heap objects (N = 32 or 64 depending on target),
|
|
any value below 2^N - (2^N / (2 * sizeof(value))) suffices.
|
|
We just take 2^(N-1) for simplicity. */
|
|
|
|
#define INITIAL_OFFSET_MAX (1UL << (8 * sizeof(value) - 1))
|
|
|
|
/* The entry points */
|
|
|
|
CAMLextern void output_val (struct channel * chan, value v, value flags);
|
|
/* Output [v] with flags [flags] on the channel [chan]. */
|
|
|
|
/* </private> */
|
|
|
|
CAMLextern void output_value_to_malloc(value v, value flags,
|
|
/*out*/ char ** buf,
|
|
/*out*/ long * len);
|
|
/* Output [v] with flags [flags] to a memory buffer allocated with
|
|
malloc. On return, [*buf] points to the buffer and [*len]
|
|
contains the number of bytes in buffer. */
|
|
CAMLextern long output_value_to_block(value v, value flags,
|
|
char * data, long len);
|
|
/* Output [v] with flags [flags] to a user-provided memory buffer.
|
|
[data] points to the start of this buffer, and [len] is its size
|
|
in bytes. Return the number of bytes actually written in buffer.
|
|
Raise [Failure] if buffer is too short. */
|
|
|
|
/* <private> */
|
|
CAMLextern value input_val (struct channel * chan);
|
|
/* Read a structured value from the channel [chan]. */
|
|
/* </private> */
|
|
|
|
CAMLextern value input_val_from_string (value str, long ofs);
|
|
/* Read a structured value from the Caml string [str], starting
|
|
at offset [ofs]. */
|
|
CAMLextern value input_value_from_malloc(char * data, long ofs);
|
|
/* Read a structured value from a malloced buffer. [data] points
|
|
to the beginning of the buffer, and [ofs] is the offset of the
|
|
beginning of the externed data in this buffer. The buffer is
|
|
deallocated with [free] on return, or if an exception is raised. */
|
|
CAMLextern value input_value_from_block(char * data, long len);
|
|
/* Read a structured value from a user-provided buffer. [data] points
|
|
to the beginning of the externed data in this buffer,
|
|
and [len] is the length in bytes of valid data in this buffer.
|
|
The buffer is never deallocated by this routine. */
|
|
|
|
/* Functions for writing user-defined marshallers */
|
|
|
|
CAMLextern void serialize_int_1(int i);
|
|
CAMLextern void serialize_int_2(int i);
|
|
CAMLextern void serialize_int_4(int32 i);
|
|
CAMLextern void serialize_int_8(int64 i);
|
|
CAMLextern void serialize_float_4(float f);
|
|
CAMLextern void serialize_float_8(double f);
|
|
CAMLextern void serialize_block_1(void * data, long len);
|
|
CAMLextern void serialize_block_2(void * data, long len);
|
|
CAMLextern void serialize_block_4(void * data, long len);
|
|
CAMLextern void serialize_block_8(void * data, long len);
|
|
CAMLextern void serialize_block_float_8(void * data, long len);
|
|
|
|
CAMLextern int deserialize_uint_1(void);
|
|
CAMLextern int deserialize_sint_1(void);
|
|
CAMLextern int deserialize_uint_2(void);
|
|
CAMLextern int deserialize_sint_2(void);
|
|
CAMLextern uint32 deserialize_uint_4(void);
|
|
CAMLextern int32 deserialize_sint_4(void);
|
|
CAMLextern uint64 deserialize_uint_8(void);
|
|
CAMLextern int64 deserialize_sint_8(void);
|
|
CAMLextern float deserialize_float_4(void);
|
|
CAMLextern double deserialize_float_8(void);
|
|
CAMLextern void deserialize_block_1(void * data, long len);
|
|
CAMLextern void deserialize_block_2(void * data, long len);
|
|
CAMLextern void deserialize_block_4(void * data, long len);
|
|
CAMLextern void deserialize_block_8(void * data, long len);
|
|
CAMLextern void deserialize_block_float_8(void * data, long len);
|
|
CAMLextern void deserialize_error(char * msg);
|
|
|
|
/* <private> */
|
|
|
|
/* Auxiliary stuff for sending code pointers */
|
|
unsigned char * code_checksum (void);
|
|
|
|
#ifndef NATIVE_CODE
|
|
#include "fix_code.h"
|
|
#define code_area_start ((char *) start_code)
|
|
#define code_area_end ((char *) start_code + code_size)
|
|
#else
|
|
extern char * code_area_start, * code_area_end;
|
|
#endif
|
|
|
|
/* </private> */
|
|
|
|
#endif
|
|
|