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12 Commits

Author SHA1 Message Date
Alan Modra
0572433b5b PowerPC64 ELFv2 PPC64_OPT_LOCALENTRY 
ELFv2 functions with localentry:0 are those with a single entry point,
ie. global entry == local entry, that have no requirement on r2 or
r12 and guarantee r2 is unchanged on return.  Such an external
function can be called via the PLT without saving r2 or restoring it
on return, avoiding a common load-hit-store for small functions.

This patch implements the ld.so changes necessary for this
optimization.  ld.so needs to check that an optimized plt call
sequence is in fact calling a function implemented with localentry:0,
end emit a fatal error otherwise.

The elf/testobj6.c change is to stop "error while loading shared
libraries: expected localentry:0 `preload'" when running
elf/preloadtest, which we'd get otherwise.

	* elf/elf.h (PPC64_OPT_LOCALENTRY): Define.
	* sysdeps/alpha/dl-machine.h (elf_machine_fixup_plt): Add
	refsym and sym parameters.  Adjust callers.
	* sysdeps/aarch64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/arm/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/generic/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/hppa/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/ia64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/microblaze/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/mips/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/nios2/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_fixup_plt):
	Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/sh/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/tile/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/x86_64/dl-machine.h (elf_machine_fixup_plt): Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_error_localentry): New.
	(_dl_reloc_overflow): Increase buffser size.  Formatting.
	* sysdeps/powerpc/powerpc64/dl-machine.h (ppc64_local_entry_offset):
	Delete reloc param, add refsym and sym.  Check optimized plt
	call stubs for localentry:0 functions.  Adjust callers.
	(elf_machine_fixup_plt, elf_machine_plt_conflict): Add refsym
	and sym parameters.  Adjust callers.
	(_dl_reloc_overflow): Move attribute.
	(_dl_error_localentry): Declare.
	* elf/dl-runtime.c (_dl_fixup): Save original sym.  Pass
	refsym and sym to elf_machine_fixup_plt.
	* elf/testobj6.c (preload): Call printf.
 2017-06-14 10:47:25 +09:30
Joseph Myers
bfff8b1bec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Joseph Myers
f7a9f785e5 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Allan McRae
d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Joseph Myers
568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
H.J. Lu
eb96ffb07d Move stdio-common/_itoa.h to sysdeps/generic 2012-03-20 16:00:23 -07:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper
8acb4b81f6 Update. 
2004-03-08  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_reloc_overflow):
	Don't use INTUSE with _dl_signal_error.

2004-03-08  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/dl-machine.c(_dl_reloc_overflow): Replace
	INTUSE with GLRO.
 2004-03-08 19:35:36 +00:00
Ulrich Drepper
63c7a7e8a9 Update. 
2003-05-15  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/powerpc/powerpc32/dl-machine.c (_dl_reloc_overflow):
	Remove sym argument, always use refsym.
	(__process_machine_rela): Adjust callers.
	* sysdeps/powerpc/powerpc64/dl-machine.c (_dl_reloc_overflow):
	Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (_dl_reloc_overflow):
	Adjust prototype.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise.
 2003-05-16 04:22:23 +00:00
Roland McGrath
6ae4fca735 * sysdeps/mach/hurd/dl-sysdep.c (_dl_important_hwcaps): Use INTUSE for 
_dl_signal_error.
	* sysdeps/mips/dl-machine.h (elf_machine_runtime_link_map): Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.c
	(_dl_reloc_overflow): Likewise.
	* sysdeps/arm/dl-machine.h (elf_machine_rel): Likewise.
	(elf_machine_rela): Likewise.
 2002-09-28 19:45:42 +00:00
Roland McGrath
cfc91acd41 2002-09-17 Steven Munroe <sjmunroe@us.ibm.com> 
Ported to PowerPC64 running Linux.
	* sysdeps/powerpc/powerpc64/Dist: New file.
	* sysdeps/powerpc/powerpc64/Implies: New file.
	* sysdeps/powerpc/powerpc64/Makefile: New file.
	* sysdeps/powerpc/powerpc64/__longjmp.S: New file.
	* sysdeps/powerpc/powerpc64/atomicity.h: New file.
	* sysdeps/powerpc/powerpc64/backtrace.c: New file.
	* sysdeps/powerpc/powerpc64/bp-asm.h: New file.
	* sysdeps/powerpc/powerpc64/bsd-_setjmp.S: New file.
	* sysdeps/powerpc/powerpc64/bsd-setjmp.S: New file.
	* sysdeps/powerpc/powerpc64/dl-dtprocnum.h: New file.
	* sysdeps/powerpc/powerpc64/dl-lookupcfg.h: New file.
	* sysdeps/powerpc/powerpc64/dl-machine.c: New file.
	* sysdeps/powerpc/powerpc64/dl-machine.h: New file.
	* sysdeps/powerpc/powerpc64/memset.S: New file.
	* sysdeps/powerpc/powerpc64/ppc-mcount.S: New file.
	* sysdeps/powerpc/powerpc64/register-dump.h: New file.
	* sysdeps/powerpc/powerpc64/setjmp.S: New file.
	* sysdeps/powerpc/powerpc64/stpcpy.S: New file.
	* sysdeps/powerpc/powerpc64/strchr.S: New file.
	* sysdeps/powerpc/powerpc64/strcmp.S: New file.
	* sysdeps/powerpc/powerpc64/strcpy.S: New file.
	* sysdeps/powerpc/powerpc64/strlen.S: New file.
	* sysdeps/powerpc/powerpc64/elf/bzero.S: New file.
	* sysdeps/powerpc/powerpc64/elf/start.S: New file.
	* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: New file.
	* sysdeps/powerpc/powerpc64/fpu/s_copysignf.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions: New File.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/glob64.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/socket.S: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: New file.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: New file.
 2002-09-17 23:50:03 +00:00