ultrix4.h
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上传日期:2007-01-07
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- /*-------------------------------------------------------------------------
- *
- * dl.h
- *
- *
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- * $Id: ultrix4.h,v 1.3 1999/02/13 23:17:29 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
- /*
- * Ultrix 4.x Dynamic Loader Library Version 1.0
- *
- * dl.h
- * header file for the Dynamic Loader Library
- *
- *
- * Copyright (c) 1993 Andrew K. Yu, University of California at Berkeley
- * All rights reserved.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for educational, research, and non-profit purposes and
- * without fee is hereby granted, provided that the above copyright
- * notice appear in all copies and that both that copyright notice and
- * this permission notice appear in supporting documentation. Permission
- * to incorporate this software into commercial products can be obtained
- * from the author. The University of California and the author make
- * no representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- */
- #ifndef _DL_HEADER_
- #define _DL_HEADER_
- #include <stdio.h> /* needed to declare FILE for ldfcn.h */
- #include <filehdr.h>
- #include <syms.h>
- #include <ldfcn.h>
- #include <reloc.h>
- #include <scnhdr.h>
- typedef long CoreAddr;
- typedef struct ScnInfo
- {
- CoreAddr addr; /* starting address of the section */
- SCNHDR hdr; /* section header */
- RELOC *relocEntries; /* relocation entries */
- } ScnInfo;
- typedef enum
- {
- DL_NEEDRELOC, /* still need relocation */
- DL_RELOCATED, /* no relocation necessary */
- DL_INPROG /* relocation in progress */
- } dlRStatus;
- typedef struct JmpTbl
- {
- char *block; /* the jump table memory block */
- struct JmpTbl *next; /* next block */
- } JmpTbl;
- typedef struct dlFile
- {
- char *filename; /* file name of the object file */
- int textSize; /* used by mprotect */
- CoreAddr textAddress; /* start addr of text section */
- long textVaddr; /* vaddr of text section in obj file */
- CoreAddr rdataAddress; /* start addr of rdata section */
- long rdataVaddr; /* vaddr of text section in obj file */
- CoreAddr dataAddress; /* start addr of data section */
- long dataVaddr; /* vaddr of text section in obj file */
- CoreAddr bssAddress; /* start addr of bss section */
- long bssVaddr; /* vaddr of text section in obj file */
- int nsect; /* number of sections */
- ScnInfo *sect; /* details of each section (array) */
- int issExtMax; /* size of string space */
- char *extss; /* extern sym string space (in core) */
- int iextMax; /* maximum number of Symbols */
- pEXTR extsyms; /* extern syms */
- dlRStatus relocStatus; /* what relocation needed? */
- int needReloc;
- JmpTbl *jmptable; /* the jump table for R_JMPADDR */
- struct dlFile *next; /* next member of the archive */
- } dlFile;
- typedef struct dlSymbol
- {
- char *name; /* name of the symbol */
- long addr; /* address of the symbol */
- dlFile *objFile; /* from which file */
- } dlSymbol;
- /*
- * prototypes for the dl* interface
- */
- extern void *dl_open( /* char *filename, int mode */ );
- extern void *dl_sym( /* void *handle, char *name */ );
- extern void dl_close( /* void *handle */ );
- extern char *dl_error( /* void */ );
- #define DL_LAZY 0 /* lazy resolution */
- #define DL_NOW 1 /* immediate resolution */
- /*
- * Miscellaneous utility routines:
- */
- extern char **dl_undefinedSymbols( /* int *count */ );
- extern void dl_printAllSymbols( /* void *handle */ );
- extern void dl_setLibraries( /* char *libs */ );
- #endif /* _DL_HEADER_ */