mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-11-21 03:14:19 +08:00
6e11b2cc54
Like other NASM allocation functions, these will abort rather than ever return NULL. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
95 lines
4.4 KiB
C
95 lines
4.4 KiB
C
/* ----------------------------------------------------------------------- *
|
|
*
|
|
* Copyright 1996-2017 The NASM Authors - All Rights Reserved
|
|
* See the file AUTHORS included with the NASM distribution for
|
|
* the specific copyright holders.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* ----------------------------------------------------------------------- */
|
|
|
|
#ifndef NASM_SAA_H
|
|
#define NASM_SAA_H
|
|
|
|
#include "compiler.h"
|
|
|
|
/*
|
|
* Routines to manage a dynamic sequential-access array, under the
|
|
* same restriction on maximum mallocable block. This array may be
|
|
* written to in two ways: a contiguous chunk can be reserved of a
|
|
* given size with a pointer returned OR single-byte data may be
|
|
* written. The array can also be read back in the same two ways:
|
|
* as a series of big byte-data blocks or as a list of structures
|
|
* of a given size.
|
|
*/
|
|
|
|
struct SAA {
|
|
/*
|
|
* members `end' and `elem_len' are only valid in first link in
|
|
* list; `rptr' and `rpos' are used for reading
|
|
*/
|
|
size_t elem_len; /* Size of each element */
|
|
size_t blk_len; /* Size of each allocation block */
|
|
size_t nblks; /* Total number of allocated blocks */
|
|
size_t nblkptrs; /* Total number of allocation block pointers */
|
|
size_t length; /* Total allocated length of the array */
|
|
size_t datalen; /* Total data length of the array */
|
|
char **wblk; /* Write block pointer */
|
|
size_t wpos; /* Write position inside block */
|
|
size_t wptr; /* Absolute write position */
|
|
char **rblk; /* Read block pointer */
|
|
size_t rpos; /* Read position inside block */
|
|
size_t rptr; /* Absolute read position */
|
|
char **blk_ptrs; /* Pointer to pointer blocks */
|
|
};
|
|
|
|
struct SAA * never_null saa_init(size_t elem_len); /* 1 == byte */
|
|
void saa_free(struct SAA *);
|
|
void *saa_wstruct(struct SAA *); /* return a structure of elem_len */
|
|
void saa_wbytes(struct SAA *, const void *, size_t); /* write arbitrary bytes */
|
|
size_t saa_wcstring(struct SAA *s, const char *str); /* write a C string */
|
|
void saa_rewind(struct SAA *); /* for reading from beginning */
|
|
void *saa_rstruct(struct SAA *); /* return NULL on EOA */
|
|
const void *saa_rbytes(struct SAA *, size_t *); /* return 0 on EOA */
|
|
void saa_rnbytes(struct SAA *, void *, size_t); /* read a given no. of bytes */
|
|
/* random access */
|
|
void saa_fread(struct SAA *, size_t, void *, size_t);
|
|
void saa_fwrite(struct SAA *, size_t, const void *, size_t);
|
|
|
|
/* dump to file */
|
|
void saa_fpwrite(struct SAA *, FILE *);
|
|
|
|
/* Write specific-sized values */
|
|
void saa_write8(struct SAA *s, uint8_t v);
|
|
void saa_write16(struct SAA *s, uint16_t v);
|
|
void saa_write32(struct SAA *s, uint32_t v);
|
|
void saa_write64(struct SAA *s, uint64_t v);
|
|
void saa_wleb128u(struct SAA *, int); /* write unsigned LEB128 value */
|
|
void saa_wleb128s(struct SAA *, int); /* write signed LEB128 value */
|
|
void saa_writeaddr(struct SAA *, uint64_t, size_t);
|
|
|
|
#endif /* NASM_SAA_H */
|