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* config.h.in (USE_MULTIARCH): Define.

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* configure.in: Handle --enable-multi-arch.
	* elf/dl-runtime.c (_dl_fixup): Handle STT_GNU_IFUNC.
	(_dl_fixup_profile): Likewise.
	* elf/do-lookup.c (dl_lookup_x): Likewise.
	* sysdeps/x86_64/dl-machine.h: Handle STT_GNU_IFUNC.
	* elf/elf.h (STT_GNU_IFUNC): Define.
	* include/libc-symbols.h (libc_ifunc): Define.
	* sysdeps/x86_64/cacheinfo.c: If USE_MULTIARCH is defined, use the
	framework in init-arch.h to get CPUID values.
	* sysdeps/x86_64/multiarch/Makefile: New file.
	* sysdeps/x86_64/multiarch/init-arch.c: New file.
	* sysdeps/x86_64/multiarch/init-arch.h: New file.
	* sysdeps/x86_64/multiarch/sched_cpucount.c: New file.

	* config.make.in (experimental-malloc): Define.
	* configure.in: Handle --enable-experimental-malloc.
	* malloc/Makefile: Handle experimental-malloc flag.
	* malloc/malloc.c: Implement PER_THREAD and ATOMIC_FASTBINS features.
	* malloc/arena.c: Likewise.
	* malloc/hooks.c: Likewise.
	* malloc/malloc.h: Define M_ARENA_TEST and M_ARENA_MAX.
This commit is contained in:
Ulrich Drepper
2009-03-13 23:53:18 +00:00
parent e7f110cdbd
commit 425ce2edb9
20 changed files with 813 additions and 75 deletions
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14
elf/dl-runtime.c
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@@ -1,5 +1,5 @@
/* On-demand PLT fixup for shared objects.
Copyright (C) 1995-2006, 2007 Free Software Foundation, Inc.
Copyright (C) 1995-2006, 2007, 2008 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
@@ -130,6 +130,9 @@ _dl_fixup (
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
if (__builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0))
value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) ();
/* Finally, fix up the plt itself. */
if (__builtin_expect (GLRO(dl_bind_not), 0))
return value;
@@ -215,12 +218,21 @@ _dl_profile_fixup (
defsym != NULL
? LOOKUP_VALUE_ADDRESS (result)
+ defsym->st_value : 0);
if (__builtin_expect (ELFW(ST_TYPE) (defsym->st_info)
== STT_GNU_IFUNC, 0))
value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) ();
}
else
{
/* We already found the symbol. The module (and therefore its load
address) is also known. */
value = DL_FIXUP_MAKE_VALUE (l, l->l_addr + refsym->st_value);
if (__builtin_expect (ELFW(ST_TYPE) (refsym->st_info)
== STT_GNU_IFUNC, 0))
value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) ();
result = l;
}
/* And now perhaps the relocation addend. */