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174 lines
5.7 KiB

commit 45965137bee4946dca3cd99285f2a7afe6b99aeb
Author: Alan Modra <amodra@gmail.com>
Date: Wed Mar 5 19:57:39 2014 +1030
Support R_PPC64_ADDR64_LOCAL
This adds support for "func@localentry", an expression that returns the
ELFv2 local entry point address of function "func". I've excluded
dynamic relocation support because that obviously would require glibc
changes.
include/elf/
* ppc64.h (R_PPC64_REL24_NOTOC, R_PPC64_ADDR64_LOCAL): Define.
bfd/
* elf64-ppc.c (ppc64_elf_howto_raw): Add R_PPC64_ADDR64_LOCAL entry.
(ppc64_elf_reloc_type_lookup): Support R_PPC64_ADDR64_LOCAL.
(ppc64_elf_check_relocs): Likewise.
(ppc64_elf_relocate_section): Likewise.
* Add BFD_RELOC_PPC64_ADDR64_LOCAL.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
gas/
* config/tc-ppc.c (ppc_elf_suffix): Support @localentry.
(md_apply_fix): Support R_PPC64_ADDR64_LOCAL.
ld/testsuite/
* ld-powerpc/elfv2-2a.s, ld-powerpc/elfv2-2b.s: New files.
* ld-powerpc/elfv2-2exe.d, ld-powerpc/elfv2-2so.d: New files.
* ld-powerpc/powerpc.exp: Run new test.
elfcpp/
* powerpc.h (R_PPC64_REL24_NOTOC, R_PPC64_ADDR64_LOCAL): Define.
gold/
* powerpc.cc (Target_powerpc::Scan::local, global): Support
R_PPC64_ADDR64_LOCAL.
(Target_powerpc::Relocate::relocate): Likewise.
### a/bfd/ChangeLog
### b/bfd/ChangeLog
## -1,3 +1,13 @@
+2014-03-05 Alan Modra <amodra@gmail.com>
+
+ * elf64-ppc.c (ppc64_elf_howto_raw): Add R_PPC64_ADDR64_LOCAL entry.
+ (ppc64_elf_reloc_type_lookup): Support R_PPC64_ADDR64_LOCAL.
+ (ppc64_elf_check_relocs): Likewise.
+ (ppc64_elf_relocate_section): Likewise.
+ * Add BFD_RELOC_PPC64_ADDR64_LOCAL.
+ * bfd-in2.h: Regenerate.
+ * libbfd.h: Regenerate.
+
2014-03-04 Heiher <r@hev.cc>
* elfxx-mips.c (mips_set_isa_flags): Use E_MIPS_ARCH_64R2 for
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -3259,6 +3259,7 @@ instruction. */
BFD_RELOC_PPC64_PLTGOT16_LO_DS,
BFD_RELOC_PPC64_ADDR16_HIGH,
BFD_RELOC_PPC64_ADDR16_HIGHA,
+ BFD_RELOC_PPC64_ADDR64_LOCAL,
/* PowerPC and PowerPC64 thread-local storage relocations. */
BFD_RELOC_PPC_TLS,
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -2095,6 +2095,21 @@ static reloc_howto_type ppc64_elf_howto_raw[] = {
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
+ /* Like ADDR64, but use local entry point of function. */
+ HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
+ 0, /* rightshift */
+ 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
+ 64, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC64_ADDR64_LOCAL", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ ONES (64), /* dst_mask */
+ FALSE), /* pcrel_offset */
+
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
0, /* rightshift */
@@ -2383,6 +2398,8 @@ ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
break;
case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
break;
+ case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
+ break;
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
break;
case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
@@ -5400,6 +5417,21 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
case R_PPC64_REL16_HA:
break;
+ /* Not supported as a dynamic relocation. */
+ case R_PPC64_ADDR64_LOCAL:
+ if (info->shared)
+ {
+ if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
+ ppc_howto_init ();
+ info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
+ "in shared libraries and PIEs.\n"),
+ abfd, sec, rel->r_offset,
+ ppc64_elf_howto_table[r_type]->name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ break;
+
case R_PPC64_TOC16:
case R_PPC64_TOC16_DS:
htab->do_multi_toc = 1;
@@ -14134,6 +14166,12 @@ ppc64_elf_relocate_section (bfd *output_bfd,
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
break;
+ case R_PPC64_ADDR64_LOCAL:
+ addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
+ ? h->elf.other
+ : sym->st_other);
+ break;
+
case R_PPC64_DTPMOD64:
relocation = 1;
addend = 0;
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -1401,6 +1401,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
"BFD_RELOC_PPC64_PLTGOT16_LO_DS",
"BFD_RELOC_PPC64_ADDR16_HIGH",
"BFD_RELOC_PPC64_ADDR16_HIGHA",
+ "BFD_RELOC_PPC64_ADDR64_LOCAL",
"BFD_RELOC_PPC_TLS",
"BFD_RELOC_PPC_TLSGD",
"BFD_RELOC_PPC_TLSLD",
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -2899,6 +2899,8 @@ ENUMX
BFD_RELOC_PPC64_ADDR16_HIGH
ENUMX
BFD_RELOC_PPC64_ADDR16_HIGHA
+ENUMX
+ BFD_RELOC_PPC64_ADDR64_LOCAL
ENUMDOC
Power(rs6000) and PowerPC relocations.
### a/include/elf/ChangeLog
### b/include/elf/ChangeLog
## -1,3 +1,7 @@
+2014-03-05 Alan Modra <amodra@gmail.com>
+
+ * ppc64.h (R_PPC64_REL24_NOTOC, R_PPC64_ADDR64_LOCAL): Define.
+
2014-02-06 Andrew Pinski <apinski@cavium.com>
* mips.h (E_MIPS_MACH_OCTEON3): New machine flag.
--- a/include/elf/ppc64.h
+++ b/include/elf/ppc64.h
@@ -149,6 +149,10 @@ START_RELOC_NUMBERS (elf_ppc64_reloc_type)
RELOC_NUMBER (R_PPC64_DTPREL16_HIGH, 114)
RELOC_NUMBER (R_PPC64_DTPREL16_HIGHA, 115)
+/* Added for ELFv2. */
+ RELOC_NUMBER (R_PPC64_REL24_NOTOC, 116)
+ RELOC_NUMBER (R_PPC64_ADDR64_LOCAL, 117)
+
#ifndef RELOC_MACROS_GEN_FUNC
/* Fake relocation only used internally by ld. */
RELOC_NUMBER (R_PPC64_LO_DS_OPT, 128)