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2000-05-05  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-load.c (_dl_map_object_from_fd): Little of computation of
	parameter to mprotect and for variable assignments.

2000-05-03  Jes Sorensen  <jes@linuxcare.com>

	* sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Check the
	validity of map before dereferencing it.

	* elf/dl-reloc.c (RESOLVE_MAP): Define.

2000-05-02  Jes Sorensen  <jes@linuxcare.com>

	* elf/dl-runtime.c (fixup): Add the value returned in the symbol
	lookup to the arguments to elf_machine_fixup_plt().

	* sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Add Link_map
	of the symbol being resolved to input argument list and make the
	function return the pointer to the reloc.

	* sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Change
	return valuie to lookup_t and return the value.
	* sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_fixup_plt): Likewise.

	* sysdeps/powerpc/dl-machine.h (elf_machine_fixup_plt): Likewise.
	Make it an inline function returning value after calling
	__elf_machine_fixup_plt().

	* elf/dl-sym.c (_dl_vsym): Use DL_SYMBOL_ADDRESS() to obtain the
	symbol address.

	* elf/dl-symbol.c (_dl_symbol_value): Use LOOKUP_VALUE_ADDRESS to
	obtain the symbol address.

	* sysdeps/generic/ldsodefs.h: Add generic DL_SYMBOL_ADDRESS() macro
	depending on the definition of ELF_FUNCTION_PTR_IS_SPECIAL.

	* sysdeps/ia64/dl-machine.h: Add DL_SYMBOL_ADDRESS() macro calling
	_dl_symbol_address() - this way DL_SYMBOL_ADDRESS() turns into an
	inline on non ia64.

2000-04-28  Jes Sorensen  <jes@linuxcare.com>

	* elf/dl-runtime.c (fixup): Use the portable macros to get the
	symbol address of an object.

	* elf/dl-runtime.c (fixup-profile): Use the portable macros to get
	the symbol address of an object.

	* elf/dl-libc.c (struct do_dlsym_args): Change loadbase to a lookup_t.
	* elf/dl-lookup.c (_dl_lookup_symbol): Likewise.
	(_dl_lookup_symbol_skip): Likewise.
	(_dl_lookup_versioned_symbol): Likewise.
	(_dl_lookup_versioned_symbol_skip): Likewise.

2000-04-27  Jes Sorensen  <jes@linuxcare.com>

	* elf/rtld.c (_dl_start): Get the function pointer return address
	via _dl_start_address for architectures that need a function
	pointer descriptor rather than just a pointer (ia64).

	* sysdeps/generic/dl-lookupcfg.h: New file.
	* sysdeps/ia64/dl-lookupcfg.h: New file.
	* sysdeps/ia64/dl-machine.h: New file.
	* sysdeps/ia64/dl-symaddr.c: New file.
	* sysdeps/ia64/dl-fptr.c: New file.

	* elf/elf.h: Add IA-64 specific definitions.
This commit is contained in:
Ulrich Drepper
2000-05-05 07:15:29 +00:00
parent 61d357cae3
commit c0282c0642
24 changed files with 1212 additions and 125 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
elf/dl-sym.c
View File

@@ -1,5 +1,5 @@
/* Look up a symbol in a shared object loaded by `dlopen'.
Copyright (C) 1999 Free Software Foundation, Inc.
Copyright (C) 1999, 2000 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
@@ -29,12 +29,12 @@ void *
internal_function
_dl_sym (void *handle, const char *name, void *who)
{
ElfW(Addr) loadbase;
const ElfW(Sym) *ref = NULL;
lookup_t result;
if (handle == RTLD_DEFAULT)
/* Search the global scope. */
loadbase = _dl_lookup_symbol (name, NULL, &ref, _dl_global_scope, 0);
result = _dl_lookup_symbol (name, NULL, &ref, _dl_global_scope, 0);
else
{
struct link_map *l, *match;
@@ -56,8 +56,8 @@ _dl_sym (void *handle, const char *name, void *who)
main program (we hope). */
match = _dl_loaded;
loadbase = _dl_lookup_symbol (name, match, &ref, map->l_local_scope,
0);
result = _dl_lookup_symbol (name, match, &ref, map->l_local_scope,
0);
}
else
{
@@ -69,13 +69,13 @@ RTLD_NEXT used in code not dynamically loaded"));
while (l->l_loader)
l = l->l_loader;
loadbase = _dl_lookup_symbol_skip (name, l, &ref, l->l_local_scope,
match);
result = _dl_lookup_symbol_skip (name, l, &ref, l->l_local_scope,
match);
}
}
if (loadbase)
return (void *) (loadbase + ref->st_value);
if (result)
return DL_SYMBOL_ADDRESS (result, ref);
return NULL;
}
@@ -84,9 +84,9 @@ void *
internal_function
_dl_vsym (void *handle, const char *name, const char *version, void *who)
{
ElfW(Addr) loadbase;
const ElfW(Sym) *ref = NULL;
struct r_found_version vers;
lookup_t result;
/* Compute hash value to the version string. */
vers.name = version;
@@ -97,8 +97,8 @@ _dl_vsym (void *handle, const char *name, const char *version, void *who)
if (handle == RTLD_DEFAULT)
/* Search the global scope. */
loadbase = _dl_lookup_versioned_symbol (name, NULL, &ref, _dl_global_scope,
&vers, 0);
result = _dl_lookup_versioned_symbol (name, NULL, &ref, _dl_global_scope,
&vers, 0);
else if (handle == RTLD_NEXT)
{
struct link_map *l, *match;
@@ -118,20 +118,19 @@ RTLD_NEXT used in code not dynamically loaded"));
while (l->l_loader)
l = l->l_loader;
loadbase = _dl_lookup_versioned_symbol_skip (name, l, &ref,
l->l_local_scope,
&vers, match);
result = _dl_lookup_versioned_symbol_skip (name, l, &ref,
l->l_local_scope,
&vers, match);
}
else
{
/* Search the scope of the given object. */
struct link_map *map = handle;
loadbase = _dl_lookup_versioned_symbol (name, map, &ref,
map->l_local_scope, &vers, 0);
result = _dl_lookup_versioned_symbol (name, map, &ref,
map->l_local_scope, &vers, 0);
}
if (loadbase)
return (void *) (loadbase + ref->st_value);
if (result)
return DL_SYMBOL_ADDRESS (result, ref);
return NULL;
}