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9e6747ccac
Add copyright headers to the *.c/*.h files in the main directory. For files where I'm sure enough that we have all the approvals, I have given them the 2-BSD license, the others have been given the "LGPL for now" license header. Most of them can probably be changed after auditing. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
94 lines
4.3 KiB
C
94 lines
4.3 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2009 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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#ifndef NASM_SAA_H
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#define NASM_SAA_H
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#include "compiler.h"
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/*
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* Routines to manage a dynamic sequential-access array, under the
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* same restriction on maximum mallocable block. This array may be
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* written to in two ways: a contiguous chunk can be reserved of a
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* given size with a pointer returned OR single-byte data may be
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* written. The array can also be read back in the same two ways:
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* as a series of big byte-data blocks or as a list of structures
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* of a given size.
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*/
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struct SAA {
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/*
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* members `end' and `elem_len' are only valid in first link in
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* list; `rptr' and `rpos' are used for reading
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*/
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size_t elem_len; /* Size of each element */
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size_t blk_len; /* Size of each allocation block */
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size_t nblks; /* Total number of allocated blocks */
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size_t nblkptrs; /* Total number of allocation block pointers */
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size_t length; /* Total allocated length of the array */
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size_t datalen; /* Total data length of the array */
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char **wblk; /* Write block pointer */
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size_t wpos; /* Write position inside block */
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size_t wptr; /* Absolute write position */
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char **rblk; /* Read block pointer */
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size_t rpos; /* Read position inside block */
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size_t rptr; /* Absolute read position */
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char **blk_ptrs; /* Pointer to pointer blocks */
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};
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struct SAA *saa_init(size_t elem_len); /* 1 == byte */
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void saa_free(struct SAA *);
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void *saa_wstruct(struct SAA *); /* return a structure of elem_len */
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void saa_wbytes(struct SAA *, const void *, size_t); /* write arbitrary bytes */
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void saa_rewind(struct SAA *); /* for reading from beginning */
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void *saa_rstruct(struct SAA *); /* return NULL on EOA */
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const void *saa_rbytes(struct SAA *, size_t *); /* return 0 on EOA */
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void saa_rnbytes(struct SAA *, void *, size_t); /* read a given no. of bytes */
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/* random access */
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void saa_fread(struct SAA *, size_t, void *, size_t);
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void saa_fwrite(struct SAA *, size_t, const void *, size_t);
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/* dump to file */
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void saa_fpwrite(struct SAA *, FILE *);
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/* Write specific-sized values */
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void saa_write8(struct SAA *s, uint8_t v);
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void saa_write16(struct SAA *s, uint16_t v);
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void saa_write32(struct SAA *s, uint32_t v);
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void saa_write64(struct SAA *s, uint64_t v);
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void saa_wleb128u(struct SAA *, int); /* write unsigned LEB128 value */
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void saa_wleb128s(struct SAA *, int); /* write signed LEB128 value */
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void saa_writeaddr(struct SAA *, uint64_t, size_t);
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#endif /* NASM_SAA_H */
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