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authorRoland McGrath <roland@gnu.org>2006-03-01 06:18:49 +0000
committerRoland McGrath <roland@gnu.org>2006-03-01 06:18:49 +0000
commitd78efd9f369a8fc46229fc9224e10e3781eecc43 (patch)
tree2ab775602fdf94ce710efb518002de4a93bfab0e /include/link.h
parent0b890d59bd75cb8ab9232ab72ed8674054e11fa3 (diff)
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* elf/tst-tls-dlinfo.c: New file.
	* elf/Makefile (tests): Add it.
	($(objpfx)tst-tls-dlinfo): Depend on $(libdl).
	($(objpfx)tst-tls-dlinfo.out): Depend on $(objpfx)tst-tlsmod2.so.

	* dlfcn/dlfcn.h (RTLD_DI_PROFILENAME, RTLD_DI_PROFILEOUT): New enum
	values, reserve unsupported requested names used on Solaris.
	(RTLD_DI_TLS_MODID, RTLD_DI_TLS_DATA): New enum values.
	(RTLD_DI_MAX): Likewise.
	* dlfcn/dlinfo.c (dlinfo_doit): Handle RTLD_DI_TLS_MODID and
	RTLD_DI_TLS_DATA.

	* elf/dl-tls.c (_dl_tls_get_addr_soft): New function.
	* sysdeps/generic/ldsodefs.h: Declare it.
	* elf/Versions (ld: GLIBC_PRIVATE): Add it.
	* elf/link.h (struct dl_phdr_info): New members dlpi_tls_modid,
	dlpi_tls_data.
	* elf/dl-iteratephdr.c (__dl_iterate_phdr): Fill them in.

	* include/link.h: Don't copy contents from elf/link.h.
	Instead, #include it while #define'ing around link_map.
	* elf/dl-debug.c (_dl_debug_initialize): Add a cast.
	Add bogus extern decl to verify link_map members.
	* elf/loadtest.c (MAPS): New macro, cast _r_debug._r_map.
	(OUT, main): Use it in place of _r_debug._r_map.
	* elf/unload.c: Likewise.
	* elf/unload2.c: Likewise.
	* elf/neededtest.c (check_loaded_objects): Likewise.
	* elf/neededtest2.c (check_loaded_objects): Likewise.
	* elf/neededtest3.c (check_loaded_objects): Likewise.
	* elf/neededtest4.c (check_loaded_objects): Likewise.
	* elf/circleload1.c (check_loaded_objects): Likewise.
Diffstat (limited to 'include/link.h')
-rw-r--r--include/link.h130
1 files changed, 21 insertions, 109 deletions
diff --git a/include/link.h b/include/link.h
index 0c35264096..3079ae8739 100644
--- a/include/link.h
+++ b/include/link.h
@@ -1,6 +1,6 @@
 /* Data structure for communication from the run-time dynamic linker for
    loaded ELF shared objects.
-   Copyright (C) 1995-2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1995-2002,2003,2004,2005,2006 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
@@ -18,67 +18,32 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#ifndef	_LINK_H
-#define	_LINK_H	1
+#ifndef	_PRIVATE_LINK_H
+#define	_PRIVATE_LINK_H	1
 
-#include <elf.h>
-#include <dlfcn.h>
-#include <stddef.h>
-#include <sys/types.h>
+#ifdef _LINK_H
+# error this should be impossible
+#endif
+
+/* Get most of the contents from the public header, but we define a
+   different `struct link_map' type for private use.  The la_objopen
+   prototype uses the type, so we have to declare it separately.  */
+#define link_map	link_map_public
+#define la_objopen	la_objopen_wrongproto
+#include <elf/link.h>
+#undef	link_map
+#undef	la_objopen
+
+struct link_map;
+extern unsigned int la_objopen (struct link_map *__map, Lmid_t __lmid,
+				uintptr_t *__cookie);
 
-/* We use this macro to refer to ELF types independent of the native wordsize.
-   `ElfW(TYPE)' is used in place of `Elf32_TYPE' or `Elf64_TYPE'.  */
-#define ElfW(type)	_ElfW (Elf, __ELF_NATIVE_CLASS, type)
-#define _ElfW(e,w,t)	_ElfW_1 (e, w, _##t)
-#define _ElfW_1(e,w,t)	e##w##t
 
-#include <bits/elfclass.h>		/* Defines __ELF_NATIVE_CLASS.  */
-#include <bits/link.h>
+#include <stddef.h>
 #include <bits/linkmap.h>
 #include <dl-lookupcfg.h>
 #include <tls.h>		/* Defines USE_TLS.  */
 
-/* Rendezvous structure used by the run-time dynamic linker to communicate
-   details of shared object loading to the debugger.  If the executable's
-   dynamic section has a DT_DEBUG element, the run-time linker sets that
-   element's value to the address where this structure can be found.  */
-
-struct r_debug
-  {
-    int r_version;		/* Version number for this protocol.  */
-
-    struct link_map *r_map;	/* Head of the chain of loaded objects.  */
-
-    /* This is the address of a function internal to the run-time linker,
-       that will always be called when the linker begins to map in a
-       library or unmap it, and again when the mapping change is complete.
-       The debugger can set a breakpoint at this address if it wants to
-       notice shared object mapping changes.  */
-    ElfW(Addr) r_brk;
-    enum
-      {
-	/* This state value describes the mapping change taking place when
-	   the `r_brk' address is called.  */
-	RT_CONSISTENT,		/* Mapping change is complete.  */
-	RT_ADD,			/* Beginning to add a new object.  */
-	RT_DELETE		/* Beginning to remove an object mapping.  */
-      } r_state;
-
-    ElfW(Addr) r_ldbase;	/* Base address the linker is loaded at.  */
-  };
-
-/* This is the instance of that structure used by the dynamic linker.  */
-extern struct r_debug _r_debug;
-
-/* This symbol refers to the "dynamic structure" in the `.dynamic' section
-   of whatever module refers to `_DYNAMIC'.  So, to find its own
-   `struct r_debug', a program could do:
-     for (dyn = _DYNAMIC; dyn->d_tag != DT_NULL; ++dyn)
-       if (dyn->d_tag == DT_DEBUG)
-	 r_debug = (struct r_debug *) dyn->d_un.d_ptr;
-   */
-extern ElfW(Dyn) _DYNAMIC[];
-
 
 /* Some internal data structures of the dynamic linker used in the
    linker map.  We only provide forward declarations.  */
@@ -316,45 +281,6 @@ struct link_map
     } l_audit[0];
   };
 
-/* Version numbers for la_version handshake interface.  */
-#define LAV_CURRENT	1
-
-/* Activity types signaled through la_activity.  */
-enum
-  {
-    LA_ACT_CONSISTENT,
-    LA_ACT_ADD,
-    LA_ACT_DELETE
-  };
-
-/* Values representing origin of name for dynamic loading.  */
-enum
-  {
-    LA_SER_ORIG = 0x01,		/* Original name.  */
-    LA_SER_LIBPATH = 0x02,	/* Directory from LD_LIBRARY_PATH.  */
-    LA_SER_RUNPATH = 0x04,	/* Directory from RPATH/RUNPATH.  */
-    LA_SER_CONFIG = 0x08,	/* Found through ldconfig.  */
-    LA_SER_DEFAULT = 0x40,	/* Default directory.  */
-    LA_SER_SECURE = 0x80	/* Unused.  */
-  };
-
-/* Values for la_objopen return value.  */
-enum
-  {
-    LA_FLG_BINDTO = 0x01,	/* Audit symbols bound to this object.  */
-    LA_FLG_BINDFROM = 0x02	/* Audit symbols bound from this object.  */
-  };
-
-/* Values for la_symbind flags parameter.  */
-enum
-  {
-    LA_SYMB_NOPLTENTER = 0x01,	/* la_pltenter will not be called.  */
-    LA_SYMB_NOPLTEXIT = 0x02,	/* la_pltexit will not be called.  */
-    LA_SYMB_STRUCTCALL = 0x04,	/* Return value is a structure.  */
-    LA_SYMB_DLSYM = 0x08,	/* Binding due to dlsym call.  */
-    LA_SYMB_ALTVALUE = 0x10	/* Value has been changed by a previous
-				   la_symbind call.  */
-  };
 
 #if __ELF_NATIVE_CLASS == 32
 # define symbind symbind32
@@ -364,22 +290,8 @@ enum
 # error "__ELF_NATIVE_CLASS must be defined"
 #endif
 
-struct dl_phdr_info
-  {
-    ElfW(Addr) dlpi_addr;
-    const char *dlpi_name;
-    const ElfW(Phdr) *dlpi_phdr;
-    ElfW(Half) dlpi_phnum;
-
-    unsigned long long int dlpi_adds;
-    unsigned long long int dlpi_subs;
-  };
-
-extern int dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
-					     size_t size, void *data),
-			    void *data);
 extern int __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
 					       size_t size, void *data),
 			      void *data);
 
-#endif /* link.h */
+#endif /* include/link.h */