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.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 857e84e..5e93508 100644 (file)
--- 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

diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index ebc7496..9832639 100644 (file)
--- 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,

diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 633d8db..7a93eda 100644 (file)
--- 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;

diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index bbca43f..69cabab 100644 (file)
--- 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",

diff --git a/bfd/reloc.c b/bfd/reloc.c
index 5cc6e0c..792214f 100644 (file)
--- 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.
 

diff --git a/elfcpp/ChangeLog b/elfcpp/ChangeLog
index e6ec60d..fc30035 100644 (file)
--- a/elfcpp/ChangeLog
+++ b/elfcpp/ChangeLog
@@ -1,3 +1,7 @@
+2014-03-05  Alan Modra  <amodra@gmail.com>
+
+       * powerpc.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 enum constant.

diff --git a/elfcpp/powerpc.h b/elfcpp/powerpc.h
index 98354a2..0d156b1 100644 (file)
--- a/elfcpp/powerpc.h
+++ b/elfcpp/powerpc.h
@@ -176,6 +176,8 @@ enum
   R_PPC_EMB_BIT_FLD = 115,
   R_PPC64_DTPREL16_HIGHA = 115,
   R_PPC_EMB_RELSDA = 116,
+  R_PPC64_REL24_NOTOC = 116,
+  R_PPC64_ADDR64_LOCAL = 117,
 
   R_PPC_VLE_REL8 = 216,
   R_PPC_VLE_REL15 = 217,

diff --git a/gas/ChangeLog b/gas/ChangeLog
index dae0368..0549f39 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,10 @@
 2014-03-05  Alan Modra  <amodra@gmail.com>
 
+       * config/tc-ppc.c (ppc_elf_suffix): Support @localentry.
+       (md_apply_fix): Support R_PPC64_ADDR64_LOCAL.
+
+2014-03-05  Alan Modra  <amodra@gmail.com>
+
        * config/tc-ppc.c (md_assemble): Move code adjusting reloc types
        later.  Merge absolute and relative branch reloc selection.
        Generate 16-bit relocs for most 16-bit insn fields given a

diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 6ffbe13..838f522 100644 (file)
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -1952,6 +1952,7 @@ ppc_elf_suffix (char **str_p, expressionS *exp_p)
     MAP64 ("dtprel@highera",   BFD_RELOC_PPC64_DTPREL16_HIGHERA),
     MAP64 ("dtprel@highest",   BFD_RELOC_PPC64_DTPREL16_HIGHEST),
     MAP64 ("dtprel@highesta",  BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
+    MAP64 ("localentry",       BFD_RELOC_PPC64_ADDR64_LOCAL),
     MAP64 ("tprel@high",       BFD_RELOC_PPC64_TPREL16_HIGH),
     MAP64 ("tprel@higha",      BFD_RELOC_PPC64_TPREL16_HIGHA),
     MAP64 ("tprel@higher",     BFD_RELOC_PPC64_TPREL16_HIGHER),
@@ -6844,6 +6845,7 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
        case BFD_RELOC_PPC64_HIGHEST_S:
        case BFD_RELOC_PPC64_ADDR16_HIGH:
        case BFD_RELOC_PPC64_ADDR16_HIGHA:
+       case BFD_RELOC_PPC64_ADDR64_LOCAL:
          break;
 
        case BFD_RELOC_PPC_DTPMOD:

diff --git a/gold/ChangeLog b/gold/ChangeLog
index f600b84..8ccb431 100644 (file)
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,9 @@
+2014-03-05  Alan Modra  <amodra@gmail.com>
+
+       * powerpc.cc (Target_powerpc::Scan::local, global): Support
+       R_PPC64_ADDR64_LOCAL.
+       (Target_powerpc::Relocate::relocate): Likewise.
+
 2014-03-03  Alan Modra  <amodra@gmail.com>
 
        * dwp.cc (print_version): Update copyright year to current.

diff --git a/gold/powerpc.cc b/gold/powerpc.cc
index 1aa4791..8130149 100644 (file)
--- a/gold/powerpc.cc
+++ b/gold/powerpc.cc
@@ -5482,6 +5482,7 @@ Target_powerpc<size, big_endian>::Scan::local(
     case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
     case elfcpp::R_PPC64_TLSGD:
     case elfcpp::R_PPC64_TLSLD:
+    case elfcpp::R_PPC64_ADDR64_LOCAL:
       break;
 
     case elfcpp::R_POWERPC_GOT16:
@@ -5928,6 +5929,7 @@ Target_powerpc<size, big_endian>::Scan::global(
     case elfcpp::R_PPC64_DTPREL16_HIGHESTA:
     case elfcpp::R_PPC64_TLSGD:
     case elfcpp::R_PPC64_TLSLD:
+    case elfcpp::R_PPC64_ADDR64_LOCAL:
       break;
 
     case elfcpp::R_POWERPC_GOT16:
@@ -7137,6 +7139,13 @@ Target_powerpc<size, big_endian>::Relocate::relocate(
       value -= dtp_offset;
       break;
 
+    case elfcpp::R_PPC64_ADDR64_LOCAL:
+      if (gsym != NULL)
+       value += object->ppc64_local_entry_offset(gsym);
+      else
+       value += object->ppc64_local_entry_offset(r_sym);
+      break;
+
     default:
       break;
     }
@@ -7339,6 +7348,7 @@ Target_powerpc<size, big_endian>::Relocate::relocate(
     case elfcpp::R_PPC64_ADDR64:
     case elfcpp::R_PPC64_REL64:
     case elfcpp::R_PPC64_TOC:
+    case elfcpp::R_PPC64_ADDR64_LOCAL:
       Reloc::addr64(view, value);
       break;
 

diff --git a/include/elf/ChangeLog b/include/elf/ChangeLog
index bd18469..bf7a370 100644 (file)
--- 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.

diff --git a/include/elf/ppc64.h b/include/elf/ppc64.h
index 78d947b..30ed8bc 100644 (file)
--- 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)

diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog
index 701b088..b083aec 100644 (file)
--- a/ld/testsuite/ChangeLog
+++ b/ld/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2014-03-05  Alan Modra  <amodra@gmail.com>
+
+       * 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.
+
 2014-03-03  Alan Modra  <amodra@gmail.com>
 
        * ld-scripts/phdrs2.exp: Correct copyright punctuation.

diff --git a/ld/testsuite/ld-powerpc/elfv2-2a.s b/ld/testsuite/ld-powerpc/elfv2-2a.s
new file mode 100644 (file)
index 0000000..303087a
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/elfv2-2a.s
@@ -0,0 +1,27 @@
+ .globl f1
+ .type f1,@function
+ .text
+f1:
+ addis 2,12,.TOC.-f1@ha
+ addi 2,2,.TOC.-f1@l
+ .localentry f1,.-f1
+ blr
+ .size f1,.-f1
+
+ .globl f2
+ .type f2,@function
+ .text
+f2:
+ addi 2,12,.TOC.-f2
+ .localentry f2,.-f2
+ blr
+ .size f2,.-f2
+
+ .quad f1
+ .quad f1@localentry
+ .quad f2
+ .quad f2@localentry
+ .quad f3
+ .quad f3@localentry
+ .quad f4
+ .quad f4@localentry

diff --git a/ld/testsuite/ld-powerpc/elfv2-2b.s b/ld/testsuite/ld-powerpc/elfv2-2b.s
new file mode 100644 (file)
index 0000000..9c9d75e
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/elfv2-2b.s
@@ -0,0 +1,17 @@
+ .globl f3
+ .type f3,@function
+ .text
+f3:
+ addis 2,12,.TOC.-f3@ha
+ addi 2,2,.TOC.-f3@l
+ .localentry f3,.-f3
+ blr
+ .size f3,.-f3
+
+ .globl f4
+ .type f4,@function
+ .text
+f4:
+ .localentry f4,0
+ blr
+ .size f4,.-f4

diff --git a/ld/testsuite/ld-powerpc/elfv2-2exe.d b/ld/testsuite/ld-powerpc/elfv2-2exe.d
new file mode 100644 (file)
index 0000000..c8deda1
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/elfv2-2exe.d
@@ -0,0 +1,41 @@
+#source: elfv2-2a.s
+#source: elfv2-2b.s
+#as: -a64
+#ld: -melf64ppc -e f1
+#objdump: -dr
+
+.*
+
+Disassembly of section \.text:
+
+0+10000078 <f1>:
+.*:    (3c 40 10 01|01 10 40 3c)       lis     r2,4097
+.*:    (38 42 80 78|78 80 42 38)       addi    r2,r2,-32648
+.*:    (4e 80 00 20|20 00 80 4e)       blr
+0+10000084 <f2>:
+.*:    (38 4c 7f f4|f4 7f 4c 38)       addi    r2,r12,32756
+.*:    (4e 80 00 20|20 00 80 4e)       blr
+.*:    (00 00 00 00|78 00 00 10) .*
+.*:    (10 00 00 78|00 00 00 00) .*
+.*:    (00 00 00 00|80 00 00 10) .*
+.*:    (10 00 00 80|00 00 00 00) .*
+.*:    (00 00 00 00|84 00 00 10) .*
+.*:    (10 00 00 84|00 00 00 00) .*
+.*:    (00 00 00 00|88 00 00 10) .*
+.*:    (10 00 00 88|00 00 00 00) .*
+.*:    (00 00 00 00|cc 00 00 10) .*
+.*:    (10 00 00 cc|00 00 00 00) .*
+.*:    (00 00 00 00|d4 00 00 10) .*
+.*:    (10 00 00 d4|00 00 00 00) .*
+.*:    (00 00 00 00|d8 00 00 10) .*
+.*:    (10 00 00 d8|00 00 00 00) .*
+.*:    (00 00 00 00|d8 00 00 10) .*
+.*:    (10 00 00 d8|00 00 00 00) .*
+
+0+100000cc <f3>:
+.*:    (3c 40 10 01|01 10 40 3c)       lis     r2,4097
+.*:    (38 42 80 78|78 80 42 38)       addi    r2,r2,-32648
+.*:    (4e 80 00 20|20 00 80 4e)       blr
+
+0+100000d8 <f4>:
+.*:    (4e 80 00 20|20 00 80 4e)       blr

diff --git a/ld/testsuite/ld-powerpc/elfv2-2so.d b/ld/testsuite/ld-powerpc/elfv2-2so.d
new file mode 100644 (file)
index 0000000..56b1434
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/elfv2-2so.d
@@ -0,0 +1,5 @@
+#source: elfv2-2a.s
+#source: elfv2-2b.s
+#as: -a64
+#ld: -melf64ppc -shared -e f1
+#error: .* R_PPC64_ADDR64_LOCAL reloc unsupported in shared libraries and PIEs.*

diff --git a/ld/testsuite/ld-powerpc/powerpc.exp b/ld/testsuite/ld-powerpc/powerpc.exp
index 87e4ea8..2e8c126 100644 (file)
--- a/ld/testsuite/ld-powerpc/powerpc.exp
+++ b/ld/testsuite/ld-powerpc/powerpc.exp
@@ -271,6 +271,8 @@ if [ supports_ppc64 ] then {
     run_dump_test "relbrlt"
     run_dump_test "elfv2so"
     run_dump_test "elfv2exe"
+    run_dump_test "elfv2-2so"
+    run_dump_test "elfv2-2exe"
 }
 
 if { [istarget "powerpc*-eabi*"] } {