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110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* dl.h
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*
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*
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/backend/port/dynloader/ultrix4.h
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* Ultrix 4.x Dynamic Loader Library Version 1.0
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*
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* dl.h
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* header file for the Dynamic Loader Library
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*/
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#ifndef _DL_HEADER_
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#define _DL_HEADER_
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#include <stdio.h>
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#include "filehdr.h"
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#include "syms.h"
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#include "ldfcn.h"
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#include "reloc.h"
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#include "scnhdr.h"
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typedef long CoreAddr;
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typedef struct ScnInfo
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{
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CoreAddr addr; /* starting address of the section */
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SCNHDR hdr; /* section header */
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RELOC *relocEntries; /* relocation entries */
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} ScnInfo;
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typedef enum
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{
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DL_NEEDRELOC, /* still need relocation */
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DL_RELOCATED, /* no relocation necessary */
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DL_INPROG /* relocation in progress */
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} dlRStatus;
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typedef struct JmpTbl
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{
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char *block; /* the jump table memory block */
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struct JmpTbl *next; /* next block */
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} JmpTbl;
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typedef struct dlFile
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{
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char *filename; /* file name of the object file */
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int textSize; /* used by mprotect */
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CoreAddr textAddress; /* start addr of text section */
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long textVaddr; /* vaddr of text section in obj file */
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CoreAddr rdataAddress; /* start addr of rdata section */
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long rdataVaddr; /* vaddr of text section in obj file */
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CoreAddr dataAddress; /* start addr of data section */
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long dataVaddr; /* vaddr of text section in obj file */
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CoreAddr bssAddress; /* start addr of bss section */
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long bssVaddr; /* vaddr of text section in obj file */
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int nsect; /* number of sections */
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ScnInfo *sect; /* details of each section (array) */
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int issExtMax; /* size of string space */
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char *extss; /* extern sym string space (in core) */
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int iextMax; /* maximum number of Symbols */
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pEXTR extsyms; /* extern syms */
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dlRStatus relocStatus; /* what relocation needed? */
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int needReloc;
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JmpTbl *jmptable; /* the jump table for R_JMPADDR */
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struct dlFile *next; /* next member of the archive */
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} dlFile;
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typedef struct dlSymbol
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{
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char *name; /* name of the symbol */
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long addr; /* address of the symbol */
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dlFile *objFile; /* from which file */
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} dlSymbol;
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/*
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* prototypes for the dl* interface
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*/
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extern void *dl_open( /* char *filename, int mode */ );
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extern void *dl_sym( /* void *handle, char *name */ );
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extern void dl_close( /* void *handle */ );
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extern char *dl_error( /* void */ );
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#define DL_LAZY 0 /* lazy resolution */
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#define DL_NOW 1 /* immediate resolution */
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/*
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* Miscellaneous utility routines:
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*/
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extern char **dl_undefinedSymbols( /* int *count */ );
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extern void dl_printAllSymbols( /* void *handle */ );
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extern void dl_setLibraries( /* char *libs */ );
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#endif /* _DL_HEADER_ */
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