From 94c08b82375ec2317aeee9c7763e2efaadc7524a Mon Sep 17 00:00:00 2001 From: pvalchev <> Date: Tue, 6 Aug 2002 07:40:31 +0000 Subject: [PATCH] restore link_map ABI compatibility between gdb and ld.so. this comes from what powerpc and sparc64 had as machine/link.h in 3.1 used by gdb, and will be needed by other ELF architectures to provide gdb solib support; ok drahn --- src/include/link_elf.h | 92 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 79 insertions(+), 13 deletions(-) diff --git a/src/include/link_elf.h b/src/include/link_elf.h index 71488c81..3b767524 100644 --- a/src/include/link_elf.h +++ b/src/include/link_elf.h @@ -1,24 +1,90 @@ -/* $OpenBSD: link_elf.h,v 1.1 2002/06/07 03:00:01 art Exp $ */ +/* $OpenBSD: link_elf.h,v 1.2 2002/08/06 07:40:31 pvalchev Exp $ */ /* - * Public domain. + * Copyright (c) 1996 Per Fogelstrom + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed under OpenBSD by + * Per Fogelstrom. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * */ +#ifndef _LINK_ELF_H + #include #ifndef DT_PROCNUM #define DT_PROCNUM 0 #endif -/* - * struct link_map is a part of the protocol between the debugger and - * ld.so. - */ -struct link_map { - caddr_t l_addr; /* Base address of library */ - const char *l_name; /* Absolute path to library */ - void *l_ld; /* pointer to _DYNAMIC */ - struct link_map *l_next; - struct link_map *l_prev; -}; +/* Structure describing a loaded shared object. The `l_next' and `l_prev' + members form a chain of all the shared objects loaded at startup. + + These data structures exist in space used by the run-time dynamic linker; + modifying them may have disastrous results. */ + +struct link_map + { + /* These first few members are part of the protocol with the debugger. + This is the same format used in SVR4. */ + + Elf_Addr l_addr; /* Base address shared object is loaded at. */ + Elf_Addr l_offs; /* Offset */ + char *l_name; /* Absolute file name object was found in. */ + Elf_Dyn *l_ld; /* Dynamic section of the shared object. */ + struct link_map *l_next, *l_prev; /* Chain of loaded objects. */ + + /* All following members are internal to the dynamic linker. + They may change without notice. */ + + const char *l_libname; /* Name requested (before search). */ + + /* Indexed pointers to dynamic section. */ + Elf_Dyn *l_info[DT_NUM + DT_PROCNUM]; + + const Elf_Phdr *l_phdr; /* Pointer to program header table in core. */ + Elf_Word l_phnum; /* Number of program header entries. */ + Elf_Addr l_entry; /* Entry point location. */ + + /* Symbol hash table. */ + Elf_Word l_nbuckets; + const Elf_Word *l_buckets, *l_chain; + + unsigned int l_opencount; /* Reference count for dlopen/dlclose. */ + enum /* Where this object came from. */ + { + lt_executable, /* The main executable program. */ + lt_interpreter, /* The interpreter: the dynamic linker. */ + lt_library, /* Library needed by main executable. */ + lt_loaded, /* Extra run-time loaded shared object. */ + } l_type:2; + unsigned int l_deps_loaded:1; /* Nonzero if DT_NEEDED items loaded. */ + unsigned int l_relocated:1; /* Nonzero if object's relocations done. */ + unsigned int l_init_called:1; /* Nonzero if DT_INIT function called. */ + unsigned int l_init_running:1; /* Nonzero while DT_INIT function runs. */ + }; +#endif /* !_LINK_ELF_H */