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rdoff: add back rdfutils.h missing from previous checkin
Checkin 8dc965347d was missing this
file, causing obvious failures.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin
parent
cea308b3dc
commit
3d6d7331ab
165
rdoff/rdfutils.h
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165
rdoff/rdfutils.h
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/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2017 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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/*
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* rdfutils.h
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*
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* Internal header file for RDOFF utilities
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*/
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#ifndef RDOFF_RDFUTILS_H
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#define RDOFF_RDFUTILS_H 1
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#include "compiler.h"
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#include "nasmlib.h"
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#include "error.h"
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#include "rdoff.h"
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#include <stdlib.h>
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#include <stdio.h>
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typedef union RDFHeaderRec {
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char type; /* invariant throughout all below */
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struct GenericRec g; /* type 0 */
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struct RelocRec r; /* type == 1 / 6 */
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struct ImportRec i; /* type == 2 / 7 */
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struct ExportRec e; /* type == 3 */
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struct DLLRec d; /* type == 4 */
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struct BSSRec b; /* type == 5 */
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struct ModRec m; /* type == 8 */
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struct CommonRec c; /* type == 10 */
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} rdfheaderrec;
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struct SegmentHeaderRec {
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/* information from file */
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uint16_t type;
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uint16_t number;
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uint16_t reserved;
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int32_t length;
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/* information built up here */
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int32_t offset;
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uint8_t *data; /* pointer to segment data if it exists in memory */
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};
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typedef struct RDFFileInfo {
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FILE *fp; /* file descriptor; must be open to use this struct */
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int rdoff_ver; /* should be 1; any higher => not guaranteed to work */
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int32_t header_len;
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int32_t header_ofs;
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uint8_t *header_loc; /* keep location of header */
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int32_t header_fp; /* current location within header for reading */
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struct SegmentHeaderRec seg[RDF_MAXSEGS];
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int nsegs;
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int32_t eof_offset; /* offset of the first uint8_t beyond the end of this
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module */
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char *name; /* name of module in libraries */
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int *refcount; /* pointer to reference count on file, or NULL */
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} rdffile;
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#define BUF_BLOCK_LEN 4088 /* selected to match page size (4096)
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* on 80x86 machines for efficiency */
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typedef struct memorybuffer {
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int length;
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uint8_t buffer[BUF_BLOCK_LEN];
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struct memorybuffer *next;
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} memorybuffer;
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typedef struct {
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memorybuffer *buf; /* buffer containing header records */
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int nsegments; /* number of segments to be written */
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int32_t seglength; /* total length of all the segments */
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} rdf_headerbuf;
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/* segments used by RDOFF, understood by rdoffloadseg */
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#define RDOFF_CODE 0
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#define RDOFF_DATA 1
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#define RDOFF_HEADER -1
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/* mask for 'segment' in relocation records to find if relative relocation */
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#define RDOFF_RELATIVEMASK 64
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/* mask to find actual segment value in relocation records */
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#define RDOFF_SEGMENTMASK 63
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extern int rdf_errno;
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/* rdf_errno can hold these error codes */
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enum {
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/* 0 */ RDF_OK,
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/* 1 */ RDF_ERR_OPEN,
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/* 2 */ RDF_ERR_FORMAT,
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/* 3 */ RDF_ERR_READ,
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/* 4 */ RDF_ERR_UNKNOWN,
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/* 5 */ RDF_ERR_HEADER,
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/* 6 */ RDF_ERR_NOMEM,
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/* 7 */ RDF_ERR_VER,
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/* 8 */ RDF_ERR_RECTYPE,
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/* 9 */ RDF_ERR_RECLEN,
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/* 10 */ RDF_ERR_SEGMENT
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};
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/* library init */
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void rdoff_init(void);
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/* utility functions */
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int32_t translateint32_t(int32_t in);
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uint16_t translateint16_t(uint16_t in);
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char *translatesegmenttype(uint16_t type);
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/* RDOFF file manipulation functions */
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int rdfopen(rdffile * f, const char *name);
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int rdfopenhere(rdffile * f, FILE * fp, int *refcount, const char *name);
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int rdfclose(rdffile * f);
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int rdffindsegment(rdffile * f, int segno);
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int rdfloadseg(rdffile * f, int segment, void *buffer);
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rdfheaderrec *rdfgetheaderrec(rdffile * f); /* returns static storage */
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void rdfheaderrewind(rdffile * f); /* back to start of header */
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void rdfperror(const char *app, const char *name);
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/* functions to write a new RDOFF header to a file -
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use rdfnewheader to allocate a header, rdfaddheader to add records to it,
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rdfaddsegment to notify the header routines that a segment exists, and
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to tell it how int32_t the segment will be.
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rdfwriteheader to write the file id, object length, and header
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to a file, and then rdfdoneheader to dispose of the header */
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rdf_headerbuf *rdfnewheader(void);
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int rdfaddheader(rdf_headerbuf * h, rdfheaderrec * r);
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int rdfaddsegment(rdf_headerbuf * h, int32_t seglength);
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int rdfwriteheader(FILE * fp, rdf_headerbuf * h);
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void rdfdoneheader(rdf_headerbuf * h);
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#endif /* RDOFF_RDFUTILS_H */
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