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Thu Mar 30 01:38:00 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>

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* elf/elf.h (STN_UNDEF): New macro (distinct from SHN_UNDEF, though
 	both are zero).

	* elf/dlfcn.h: New file.
This commit is contained in:
Roland McGrath 1995-03-30 10:00:08 +00:00
parent ea7d993862
commit b1f1136175
3 changed files with 66 additions and 2 deletions
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7
ChangeLog
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@ -1,5 +1,12 @@
Thu Mar 30 01:38:00 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* elf/elf.h (STN_UNDEF): New macro (distinct from SHN_UNDEF, though
both are zero).
Wed Mar 29 11:26:48 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* elf/dlfcn.h: New file.
* Make-dist (README): Commit it to CVS if there is a CVS directory.
More changes from Germano Caronni <caronni@tik.ethz.ch>:

49
elf/dlfcn.h Normal file
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@ -0,0 +1,49 @@
/* dlfcn.h -- User functions for run-time dynamic loading.
Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#ifndef _DLFCN_H
#define _DLFCN_H 1
/* Type of the second argument to `dlopen'. */
typedef enum
{
RTLD_LAZY = 1, /* Lazy function call binding. */
RTLD_NOW = 2 /* Immediate function call binding. */
} dl_open_mode;
/* Open the shared object FILE and map it in; return a handle that can be
passed to `dlsym' to get symbol values from it. */
extern void *dlopen (const char *__file, dl_open_mode);
/* Unmap and close a shared object opened by `dlopen'.
The handle cannot be used again after calling `dlclose'. */
extern int dlclose (void *__handle);
/* Find the run-time address in the shared object HANDLE refers to
of the symbol called NAME. */
extern void *dlsym (void *__handle, const char *__name);
/* When any of the above functions fails, call this function
to return a string describing the error. Each call resets
the error string so that a following call returns null. */
extern char *dlerror (void);
#endif /* dlfcn.h */

12
elf/elf.h
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@ -188,9 +188,9 @@ typedef struct
Elf32_Half st_shndx; /* Section index */
} Elf32_Sym;
/* Special symbol index. */
/* Special section index. */
#define SHN_UNDEF 0 /* Undefined symbol */
#define SHN_UNDEF 0 /* No section, undefined symbol. */
/* How to extract and insert information held in the st_info field. */
@ -216,6 +216,14 @@ typedef struct
#define STT_LOPROC 13 /* Start of processor-specific */
#define STT_HIPROC 15 /* End of processor-specific */
/* Symbol table indices are found in the hash buckets and chain table
of a symbol hash table section. This special index value indicates
the end of a chain, meaning no further symbols are found in that bucket. */
#define STN_UNDEF 0 /* End of a chain. */
/* Relocation table entry without addend (in section of type SHT_REL). */
typedef struct