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Update.

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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

56
elf/dl-runtime.c
View File

@@ -57,6 +57,7 @@ fixup (
= (const void *) (D_PTR (l, l_info[DT_JMPREL]) + reloc_offset);
const ElfW(Sym) *sym = &symtab[ELFW(R_SYM) (reloc->r_info)];
void *const rel_addr = (void *)(l->l_addr + reloc->r_offset);
lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
@@ -83,33 +84,38 @@ fixup (
if (version->hash != 0)
{
value = _dl_lookup_versioned_symbol(strtab + sym->st_name, l,
&sym, l->l_scope, version,
ELF_MACHINE_JMP_SLOT);
result = _dl_lookup_versioned_symbol (strtab + sym->st_name,
l, &sym, l->l_scope,
version,
ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_MACHINE_JMP_SLOT);
result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_MACHINE_JMP_SLOT);
}
/* Currently value contains the base load address of the object
that defines sym. Now add in the symbol offset. */
value = (sym ? value + sym->st_value : 0);
/* Currently result contains the base load address (or link map)
of the object that defines sym. Now add in the symbol
offset. */
value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
{
/* We already found the symbol. The module (and therefore its load
address) is also known. */
value = l->l_addr + sym->st_value;
value = l->l_addr + sym->st_value;
#ifdef DL_LOOKUP_RETURNS_MAP
result = l;
#endif
}
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
/* Finally, fix up the plt itself. */
elf_machine_fixup_plt (l, reloc, rel_addr, value);
return value;
return elf_machine_fixup_plt (l, result, reloc, rel_addr, value);
}
#endif
@@ -124,6 +130,7 @@ profile_fixup (
{
void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = _dl_mcount;
ElfW(Addr) *resultp;
lookup_t result;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
@@ -166,27 +173,32 @@ profile_fixup (
if (version->hash != 0)
{
value = _dl_lookup_versioned_symbol(strtab + sym->st_name,
l, &sym, l->l_scope,
version,
ELF_MACHINE_JMP_SLOT);
result = _dl_lookup_versioned_symbol(strtab + sym->st_name,
l, &sym, l->l_scope,
version,
ELF_MACHINE_JMP_SLOT);
break;
}
}
case 0:
value = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_MACHINE_JMP_SLOT);
result = _dl_lookup_symbol (strtab + sym->st_name, l, &sym,
l->l_scope, ELF_MACHINE_JMP_SLOT);
}
/* Currently value contains the base load address of the object
that defines sym. Now add in the symbol offset. */
value = (sym ? value + sym->st_value : 0);
/* Currently result contains the base load address (or link map)
of the object that defines sym. Now add in the symbol
offset. */
value = (sym ? LOOKUP_VALUE_ADDRESS (result) + sym->st_value : 0);
}
else
{
/* We already found the symbol. The module (and therefore its load
address) is also known. */
value = l->l_addr + sym->st_value;
#ifdef DL_LOOKUP_RETURNS_MAP
result = l;
#endif
}
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);