From a85d7ed0f0b65504f7d8027319d1a4a9adb9d8c1 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Sat, 10 Feb 2001 00:58:38 +0000 Subject: Add s390 support --- bfd/ChangeLog | 14 + bfd/Makefile.am | 17 + bfd/Makefile.in | 17 + bfd/archures.c | 5 + bfd/bfd-in2.h | 54 ++ bfd/config.bfd | 10 + bfd/configure | 27 +- bfd/configure.in | 3 + bfd/cpu-s390.c | 56 ++ bfd/elf.c | 3 + bfd/elf32-s390.c | 2179 ++++++++++++++++++++++++++++++++++++++++++++++++++++ bfd/elf64-s390.c | 2178 +++++++++++++++++++++++++++++++++++++++++++++++++++ bfd/libbfd.h | 17 + bfd/po/POTFILES.in | 3 + bfd/po/bfd.pot | 59 +- bfd/reloc.c | 69 ++ bfd/targets.c | 7 +- 17 files changed, 4676 insertions(+), 42 deletions(-) create mode 100644 bfd/cpu-s390.c create mode 100644 bfd/elf32-s390.c create mode 100644 bfd/elf64-s390.c (limited to 'bfd') diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 082c643..9669fd4 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,17 @@ +2001-02-09 Martin Schwidefsky + + * Makefile.am: Add linux target for S/390. + * archures.c: Likewise. + * bfd-in2.h: Likewise. + * config.bfd: Likewise. + * configure.in: Likewise. + * elf.c: Likewise. + * libbfd.h: Likewise. + * targets.c: Likewise. + * cpu-s390.c: New file. + * elf32-s390.c: New file. + * elf64-s390.c: New file. + 2001-02-09 Nick Clifton * peigen.c (_bfd_pe_get_symbol_info): Suppress addition of diff --git a/bfd/Makefile.am b/bfd/Makefile.am index 9a60ee6..821fab1 100644 --- a/bfd/Makefile.am +++ b/bfd/Makefile.am @@ -72,6 +72,7 @@ ALL_MACHINES = \ cpu-pj.lo \ cpu-powerpc.lo \ cpu-rs6000.lo \ + cpu-s390.lo \ cpu-sh.lo \ cpu-sparc.lo \ cpu-tic30.lo \ @@ -114,6 +115,7 @@ ALL_MACHINES_CFILES = \ cpu-pj.c \ cpu-powerpc.c \ cpu-rs6000.c \ + cpu-s390.c \ cpu-sh.c \ cpu-sparc.c \ cpu-tic30.c \ @@ -199,6 +201,7 @@ BFD32_BACKENDS = \ elf32-mips.lo \ elf32-pj.lo \ elf32-ppc.lo \ + elf32-s390.lo \ elf32-sh.lo \ elf32-sh-lin.lo \ elf32-sparc.lo \ @@ -336,6 +339,7 @@ BFD32_BACKENDS_CFILES = \ elf32-mips.c \ elf32-pj.c \ elf32-ppc.c \ + elf32-s390.c \ elf32-sh.c \ elf32-sh-lin.c \ elf32-sparc.c \ @@ -417,6 +421,7 @@ BFD64_BACKENDS = \ elf64-ia64.lo \ elf64-gen.lo \ elf64-mips.lo \ + elf64-s390.lo \ elf64-sparc.lo \ elf64.lo \ nlm32-alpha.lo \ @@ -433,6 +438,7 @@ BFD64_BACKENDS_CFILES = \ elf64-hppa.c \ elf64-gen.c \ elf64-mips.c \ + elf64-s390.c \ elf64-sparc.c \ elf64.c \ nlm32-alpha.c \ @@ -767,6 +773,7 @@ cpu-ns32k.lo: cpu-ns32k.c $(INCDIR)/filenames.h ns32k.h cpu-pj.lo: cpu-pj.c $(INCDIR)/filenames.h cpu-powerpc.lo: cpu-powerpc.c $(INCDIR)/filenames.h cpu-rs6000.lo: cpu-rs6000.c $(INCDIR)/filenames.h +cpu-s390.lo: cpu-s390.c $(INCDIR)/filenames.h cpu-sh.lo: cpu-sh.c $(INCDIR)/filenames.h cpu-sparc.lo: cpu-sparc.c $(INCDIR)/filenames.h cpu-tic30.lo: cpu-tic30.c $(INCDIR)/filenames.h @@ -1025,6 +1032,11 @@ elf32-ppc.lo: elf32-ppc.c $(INCDIR)/filenames.h $(INCDIR)/bfdlink.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/elf/ppc.h $(INCDIR)/elf/reloc-macros.h \ elf32-target.h +elf32-s390.lo: elf32-s390.c $(INCDIR)/filenames.h \ + $(INCDIR)/bfdlink.h elf-bfd.h $(INCDIR)/elf/common.h \ + $(INCDIR)/elf/internal.h $(INCDIR)/elf/external.h $(INCDIR)/elf/s390.h \ + $(INCDIR)/elf/reloc-macros.h $(INCDIR)/opcode/s390.h \ + elf32-target.h elf32-sh.lo: elf32-sh.c $(INCDIR)/filenames.h $(INCDIR)/bfdlink.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/elf/sh.h $(INCDIR)/elf/reloc-macros.h \ @@ -1269,6 +1281,11 @@ elf64-mips.lo: elf64-mips.c $(INCDIR)/filenames.h $(INCDIR)/aout/ar.h \ $(INCDIR)/elf/reloc-macros.h $(INCDIR)/coff/sym.h $(INCDIR)/coff/symconst.h \ $(INCDIR)/coff/internal.h $(INCDIR)/coff/ecoff.h $(INCDIR)/coff/alpha.h \ ecoffswap.h elf64-target.h +elf64-s390.lo: elf64-s390.c $(INCDIR)/filenames.h \ + elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ + $(INCDIR)/elf/external.h $(INCDIR)/bfdlink.h $(INCDIR)/opcode/s390.h \ + $(INCDIR)/elf/s390.h $(INCDIR)/elf/reloc-macros.h \ + elf64-target.h elf64-sparc.lo: elf64-sparc.c $(INCDIR)/filenames.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/bfdlink.h $(INCDIR)/opcode/sparc.h \ diff --git a/bfd/Makefile.in b/bfd/Makefile.in index 0b5f886..808fb72 100644 --- a/bfd/Makefile.in +++ b/bfd/Makefile.in @@ -193,6 +193,7 @@ ALL_MACHINES = \ cpu-pj.lo \ cpu-powerpc.lo \ cpu-rs6000.lo \ + cpu-s390.lo \ cpu-sh.lo \ cpu-sparc.lo \ cpu-tic30.lo \ @@ -236,6 +237,7 @@ ALL_MACHINES_CFILES = \ cpu-pj.c \ cpu-powerpc.c \ cpu-rs6000.c \ + cpu-s390.c \ cpu-sh.c \ cpu-sparc.c \ cpu-tic30.c \ @@ -322,6 +324,7 @@ BFD32_BACKENDS = \ elf32-mips.lo \ elf32-pj.lo \ elf32-ppc.lo \ + elf32-s390.lo \ elf32-sh.lo \ elf32-sh-lin.lo \ elf32-sparc.lo \ @@ -460,6 +463,7 @@ BFD32_BACKENDS_CFILES = \ elf32-mips.c \ elf32-pj.c \ elf32-ppc.c \ + elf32-s390.c \ elf32-sh.c \ elf32-sh-lin.c \ elf32-sparc.c \ @@ -542,6 +546,7 @@ BFD64_BACKENDS = \ elf64-ia64.lo \ elf64-gen.lo \ elf64-mips.lo \ + elf64-s390.lo \ elf64-sparc.lo \ elf64.lo \ nlm32-alpha.lo \ @@ -559,6 +564,7 @@ BFD64_BACKENDS_CFILES = \ elf64-hppa.c \ elf64-gen.c \ elf64-mips.c \ + elf64-s390.c \ elf64-sparc.c \ elf64.c \ nlm32-alpha.c \ @@ -1306,6 +1312,7 @@ cpu-ns32k.lo: cpu-ns32k.c $(INCDIR)/filenames.h ns32k.h cpu-pj.lo: cpu-pj.c $(INCDIR)/filenames.h cpu-powerpc.lo: cpu-powerpc.c $(INCDIR)/filenames.h cpu-rs6000.lo: cpu-rs6000.c $(INCDIR)/filenames.h +cpu-s390.lo: cpu-s390.c $(INCDIR)/filenames.h cpu-sh.lo: cpu-sh.c $(INCDIR)/filenames.h cpu-sparc.lo: cpu-sparc.c $(INCDIR)/filenames.h cpu-tic30.lo: cpu-tic30.c $(INCDIR)/filenames.h @@ -1564,6 +1571,11 @@ elf32-ppc.lo: elf32-ppc.c $(INCDIR)/filenames.h $(INCDIR)/bfdlink.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/elf/ppc.h $(INCDIR)/elf/reloc-macros.h \ elf32-target.h +elf32-s390.lo: elf32-s390.c $(INCDIR)/filenames.h \ + $(INCDIR)/bfdlink.h elf-bfd.h $(INCDIR)/elf/common.h \ + $(INCDIR)/elf/internal.h $(INCDIR)/elf/external.h $(INCDIR)/elf/s390.h \ + $(INCDIR)/elf/reloc-macros.h $(INCDIR)/opcode/s390.h \ + elf32-target.h elf32-sh.lo: elf32-sh.c $(INCDIR)/filenames.h $(INCDIR)/bfdlink.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/elf/sh.h $(INCDIR)/elf/reloc-macros.h \ @@ -1808,6 +1820,11 @@ elf64-mips.lo: elf64-mips.c $(INCDIR)/filenames.h $(INCDIR)/aout/ar.h \ $(INCDIR)/elf/reloc-macros.h $(INCDIR)/coff/sym.h $(INCDIR)/coff/symconst.h \ $(INCDIR)/coff/internal.h $(INCDIR)/coff/ecoff.h $(INCDIR)/coff/alpha.h \ ecoffswap.h elf64-target.h +elf64-s390.lo: elf64-s390.c $(INCDIR)/filenames.h \ + elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ + $(INCDIR)/elf/external.h $(INCDIR)/bfdlink.h $(INCDIR)/opcode/s390.h \ + $(INCDIR)/elf/s390.h $(INCDIR)/elf/reloc-macros.h \ + elf64-target.h elf64-sparc.lo: elf64-sparc.c $(INCDIR)/filenames.h \ elf-bfd.h $(INCDIR)/elf/common.h $(INCDIR)/elf/internal.h \ $(INCDIR)/elf/external.h $(INCDIR)/bfdlink.h $(INCDIR)/opcode/sparc.h \ diff --git a/bfd/archures.c b/bfd/archures.c index 84b7744..b15de52 100644 --- a/bfd/archures.c +++ b/bfd/archures.c @@ -248,6 +248,9 @@ DESCRIPTION .#define bfd_mach_avr4 4 .#define bfd_mach_avr5 5 . bfd_arch_cris, {* Axis CRIS *} +. bfd_arch_s390, {* IBM s390 *} +.#define bfd_mach_s390_esa 0 +.#define bfd_mach_s390_esame 1 . bfd_arch_last . }; */ @@ -323,6 +326,7 @@ extern const bfd_arch_info_type bfd_fr30_arch; extern const bfd_arch_info_type bfd_mcore_arch; extern const bfd_arch_info_type bfd_avr_arch; extern const bfd_arch_info_type bfd_ia64_arch; +extern const bfd_arch_info_type bfd_s390_arch; static const bfd_arch_info_type * const bfd_archures_list[] = { #ifdef SELECT_ARCHITECTURES @@ -367,6 +371,7 @@ static const bfd_arch_info_type * const bfd_archures_list[] = { &bfd_mcore_arch, &bfd_avr_arch, &bfd_ia64_arch, + &bfd_s390_arch, #endif 0 }; diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index b8e864b..db4576d 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -1517,6 +1517,9 @@ enum bfd_architecture #define bfd_mach_avr4 4 #define bfd_mach_avr5 5 bfd_arch_cris, /* Axis CRIS */ + bfd_arch_s390, /* IBM s390 */ +#define bfd_mach_s390_esa 0 +#define bfd_mach_s390_esame 1 bfd_arch_last }; @@ -2515,6 +2518,57 @@ value of SUBI insn. */ into 22 bits. */ BFD_RELOC_AVR_CALL, +/* Direct 12 bit. */ + BFD_RELOC_390_12, + +/* 12 bit GOT offset. */ + BFD_RELOC_390_GOT12, + +/* 32 bit PC relative PLT address. */ + BFD_RELOC_390_PLT32, + +/* Copy symbol at runtime. */ + BFD_RELOC_390_COPY, + +/* Create GOT entry. */ + BFD_RELOC_390_GLOB_DAT, + +/* Create PLT entry. */ + BFD_RELOC_390_JMP_SLOT, + +/* Adjust by program base. */ + BFD_RELOC_390_RELATIVE, + +/* 32 bit PC relative offset to GOT. */ + BFD_RELOC_390_GOTPC, + +/* 16 bit GOT offset. */ + BFD_RELOC_390_GOT16, + +/* PC relative 16 bit shifted by 1. */ + BFD_RELOC_390_PC16DBL, + +/* 16 bit PC rel. PLT shifted by 1. */ + BFD_RELOC_390_PLT16DBL, + +/* PC relative 32 bit shifted by 1. */ + BFD_RELOC_390_PC32DBL, + +/* 32 bit PC rel. PLT shifted by 1. */ + BFD_RELOC_390_PLT32DBL, + +/* 32 bit PC rel. GOT shifted by 1. */ + BFD_RELOC_390_GOTPCDBL, + +/* 64 bit GOT offset. */ + BFD_RELOC_390_GOT64, + +/* 64 bit PC relative PLT address. */ + BFD_RELOC_390_PLT64, + +/* 32 bit rel. offset to GOT entry. */ + BFD_RELOC_390_GOTENT, + /* These two relocations are used by the linker to determine which of the entries in a C++ virtual function table are actually used. When the --gc-sections option is given, the linker will zero out the entries diff --git a/bfd/config.bfd b/bfd/config.bfd index 580c82d..f45e839 100644 --- a/bfd/config.bfd +++ b/bfd/config.bfd @@ -46,6 +46,7 @@ m88*) targ_archs=bfd_m88k_arch ;; mips*) targ_archs=bfd_mips_arch ;; pj*) targ_archs="bfd_pj_arch bfd_i386_arch";; powerpc*) targ_archs="bfd_rs6000_arch bfd_powerpc_arch" ;; +s390*) targ_archs=bfd_s390_arch ;; rs6000) targ_archs="bfd_rs6000_arch bfd_powerpc_arch" ;; sparc*) targ_archs=bfd_sparc_arch ;; v850*) targ_archs=bfd_v850_arch ;; @@ -718,6 +719,15 @@ case "${targ}" in targ_selvecs="bfd_powerpcle_pei_vec bfd_powerpc_pei_vec bfd_powerpcle_pe_vec bfd_powerpc_pe_vec" ;; + s390-*-linux*) + targ_defvec=bfd_elf32_s390_vec + ;; +#ifdef BFD64 + s390x-*-linux*) + targ_defvec=bfd_elf64_s390_vec + ;; +#endif + sh-*-linux*) targ_defvec=bfd_elf32_shblin_vec targ_selvecs=bfd_elf32_shlin_vec diff --git a/bfd/configure b/bfd/configure index d65a378..35bb8a1 100755 --- a/bfd/configure +++ b/bfd/configure @@ -5982,6 +5982,7 @@ do bfd_elf32_pjl_vec) tb="$tb elf32-pj.lo elf32.lo $elf";; bfd_elf32_powerpc_vec) tb="$tb elf32-ppc.lo elf32.lo $elf" ;; bfd_elf32_powerpcle_vec) tb="$tb elf32-ppc.lo elf32.lo $elf" ;; + bfd_elf32_s390_vec) tb="$tb elf32-s390.lo elf32.lo $elf" ;; bfd_elf32_sh_vec) tb="$tb elf32-sh.lo elf32.lo $elf coff-sh.lo" ;; bfd_elf32_shl_vec) tb="$tb elf32-sh.lo elf32.lo $elf coff-sh.lo" ;; bfd_elf32_shlin_vec) tb="$tb elf32-sh-lin.lo elf32.lo $elf coff-sh.lo cofflink.lo" ;; @@ -5994,6 +5995,8 @@ do target64=true ;; bfd_elf64_little_generic_vec) tb="$tb elf64-gen.lo elf64.lo $elf" target64=true ;; + bfd_elf64_s390_vec) tb="$tb elf64-s390.lo elf64.lo $elf" + target64=true ;; bfd_elf64_sparc_vec) tb="$tb elf64-sparc.lo elf64.lo $elf" target64=true ;; cisco_core_big_vec) tb="$tb cisco-core.lo" ;; @@ -6179,17 +6182,17 @@ for ac_hdr in unistd.h do ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'` echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6 -echo "configure:6183: checking for $ac_hdr" >&5 +echo "configure:6186: checking for $ac_hdr" >&5 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext < EOF ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" -{ (eval echo configure:6193: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } +{ (eval echo configure:6196: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"` if test -z "$ac_err"; then rm -rf conftest* @@ -6218,12 +6221,12 @@ done for ac_func in getpagesize do echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 -echo "configure:6222: checking for $ac_func" >&5 +echo "configure:6225: checking for $ac_func" >&5 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then +if { (eval echo configure:6253: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then rm -rf conftest* eval "ac_cv_func_$ac_func=yes" else @@ -6271,7 +6274,7 @@ fi done echo $ac_n "checking for working mmap""... $ac_c" 1>&6 -echo "configure:6275: checking for working mmap" >&5 +echo "configure:6278: checking for working mmap" >&5 if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -6279,7 +6282,7 @@ else ac_cv_func_mmap_fixed_mapped=no else cat > conftest.$ac_ext <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null +if { (eval echo configure:6426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null then ac_cv_func_mmap_fixed_mapped=yes else @@ -6444,12 +6447,12 @@ fi for ac_func in madvise mprotect do echo $ac_n "checking for $ac_func""... $ac_c" 1>&6 -echo "configure:6448: checking for $ac_func" >&5 +echo "configure:6451: checking for $ac_func" >&5 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then +if { (eval echo configure:6479: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then rm -rf conftest* eval "ac_cv_func_$ac_func=yes" else diff --git a/bfd/configure.in b/bfd/configure.in index d643b97..a65cb91 100644 --- a/bfd/configure.in +++ b/bfd/configure.in @@ -531,6 +531,7 @@ do bfd_elf32_pjl_vec) tb="$tb elf32-pj.lo elf32.lo $elf";; bfd_elf32_powerpc_vec) tb="$tb elf32-ppc.lo elf32.lo $elf" ;; bfd_elf32_powerpcle_vec) tb="$tb elf32-ppc.lo elf32.lo $elf" ;; + bfd_elf32_s390_vec) tb="$tb elf32-s390.lo elf32.lo $elf" ;; bfd_elf32_sh_vec) tb="$tb elf32-sh.lo elf32.lo $elf coff-sh.lo" ;; bfd_elf32_shl_vec) tb="$tb elf32-sh.lo elf32.lo $elf coff-sh.lo" ;; bfd_elf32_shlin_vec) tb="$tb elf32-sh-lin.lo elf32.lo $elf coff-sh.lo cofflink.lo" ;; @@ -543,6 +544,8 @@ do target64=true ;; bfd_elf64_little_generic_vec) tb="$tb elf64-gen.lo elf64.lo $elf" target64=true ;; + bfd_elf64_s390_vec) tb="$tb elf64-s390.lo elf64.lo $elf" + target64=true ;; bfd_elf64_sparc_vec) tb="$tb elf64-sparc.lo elf64.lo $elf" target64=true ;; cisco_core_big_vec) tb="$tb cisco-core.lo" ;; diff --git a/bfd/cpu-s390.c b/bfd/cpu-s390.c new file mode 100644 index 0000000..15eb9a5 --- /dev/null +++ b/bfd/cpu-s390.c @@ -0,0 +1,56 @@ +/* BFD support for the s390 processor. + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Contributed by Carl B. Pedersen and Martin Schwidefsky. + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" + +const bfd_arch_info_type bfd_s390_esame_arch = +{ + 64, /* bits in a word */ + 64, /* bits in an address */ + 8, /* bits in a byte */ + bfd_arch_s390, + bfd_mach_s390_esame, + "s390", + "s390:esame", + 3, /* section alignment power */ + true, /* the default */ + bfd_default_compatible, + bfd_default_scan, + NULL +}; + +const bfd_arch_info_type bfd_s390_arch = +{ + 32, /* bits in a word */ + 32, /* bits in an address */ + 8, /* bits in a byte */ + bfd_arch_s390, + bfd_mach_s390_esa, + "s390", + "s390:390", + 3, /* section alignment power */ + true, /* the default */ + bfd_default_compatible, + bfd_default_scan, + &bfd_s390_esame_arch +}; diff --git a/bfd/elf.c b/bfd/elf.c index 5ae24ee..d5d0579 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -3320,6 +3320,9 @@ prep_headers (abfd) case bfd_arch_m68hc12: i_ehdrp->e_machine = EM_68HC12; break; + case bfd_arch_s390: + i_ehdrp->e_machine = EM_S390; + break; case bfd_arch_m68k: i_ehdrp->e_machine = EM_68K; break; diff --git a/bfd/elf32-s390.c b/bfd/elf32-s390.c new file mode 100644 index 0000000..313a41a --- /dev/null +++ b/bfd/elf32-s390.c @@ -0,0 +1,2179 @@ +/* IBM S/390-specific support for 32-bit ELF + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Contributed by Carl B. Pedersen and Martin Schwidefsky. + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" +#include "elf-bfd.h" + +static reloc_howto_type *elf_s390_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); +static void elf_s390_info_to_howto + PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); +static boolean elf_s390_is_local_label_name PARAMS ((bfd *, const char *)); +static struct bfd_hash_entry *elf_s390_link_hash_newfunc + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); +static struct bfd_link_hash_table *elf_s390_link_hash_table_create + PARAMS ((bfd *)); +static boolean elf_s390_check_relocs + PARAMS ((bfd *, struct bfd_link_info *, asection *, + const Elf_Internal_Rela *)); +static boolean elf_s390_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); +static boolean elf_s390_size_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean elf_s390_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean elf_s390_finish_dynamic_symbol + PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, + Elf_Internal_Sym *)); +static boolean elf_s390_finish_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); + +#define USE_RELA 1 /* We want RELA relocations, not REL. */ + +#include "elf/s390.h" + +/* The relocation "howto" table. */ + +static reloc_howto_type elf_howto_table[] = +{ + HOWTO (R_390_NONE, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_390_NONE", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false), /* pcrel_offset */ + + HOWTO(R_390_8, 0, 0, 8, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_8", false, 0,0x000000ff, false), + HOWTO(R_390_12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_12", false, 0,0x00000fff, false), + HOWTO(R_390_16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_16", false, 0,0x0000ffff, false), + HOWTO(R_390_32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_32", false, 0,0xffffffff, false), + HOWTO(R_390_PC32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32", false, 0,0xffffffff, true), + HOWTO(R_390_GOT12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_GOT12", false, 0,0x00000fff, false), + HOWTO(R_390_GOT32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT32", false, 0,0xffffffff, false), + HOWTO(R_390_PLT32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32", false, 0,0xffffffff, true), + HOWTO(R_390_COPY, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", false, 0,0xffffffff, false), + HOWTO(R_390_GLOB_DAT, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",false, 0,0xffffffff, false), + HOWTO(R_390_JMP_SLOT, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",false, 0,0xffffffff, false), + HOWTO(R_390_RELATIVE, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",false, 0,0xffffffff, false), + HOWTO(R_390_GOTOFF, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", false, 0,0xffffffff, false), + HOWTO(R_390_GOTPC, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", false, 0,0xffffffff, true), + HOWTO(R_390_GOT16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT16", false, 0,0x0000ffff, false), + HOWTO(R_390_PC16, 0, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16", false, 0,0x0000ffff, true), + HOWTO(R_390_PC16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16DBL", false, 0,0x0000ffff, true), + HOWTO(R_390_PLT16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT16DBL", false, 0,0x0000ffff, true), +}; + +/* GNU extension to record C++ vtable hierarchy. */ +static reloc_howto_type elf32_s390_vtinherit_howto = + HOWTO (R_390_GNU_VTINHERIT, 0,2,0,false,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", false,0, 0, false); +static reloc_howto_type elf32_s390_vtentry_howto = + HOWTO (R_390_GNU_VTENTRY, 0,2,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", false,0,0, false); + +static reloc_howto_type * +elf_s390_reloc_type_lookup (abfd, code) + bfd *abfd ATTRIBUTE_UNUSED; + bfd_reloc_code_real_type code; +{ + switch (code) { + case BFD_RELOC_NONE: + return &elf_howto_table[(int) R_390_NONE]; + case BFD_RELOC_8: + return &elf_howto_table[(int) R_390_8]; + case BFD_RELOC_390_12: + return &elf_howto_table[(int) R_390_12]; + case BFD_RELOC_16: + return &elf_howto_table[(int) R_390_16]; + case BFD_RELOC_32: + return &elf_howto_table[(int) R_390_32]; + case BFD_RELOC_CTOR: + return &elf_howto_table[(int) R_390_32]; + case BFD_RELOC_32_PCREL: + return &elf_howto_table[(int) R_390_PC32]; + case BFD_RELOC_390_GOT12: + return &elf_howto_table[(int) R_390_GOT12]; + case BFD_RELOC_32_GOT_PCREL: + return &elf_howto_table[(int) R_390_GOT32]; + case BFD_RELOC_390_PLT32: + return &elf_howto_table[(int) R_390_PLT32]; + case BFD_RELOC_390_COPY: + return &elf_howto_table[(int) R_390_COPY]; + case BFD_RELOC_390_GLOB_DAT: + return &elf_howto_table[(int) R_390_GLOB_DAT]; + case BFD_RELOC_390_JMP_SLOT: + return &elf_howto_table[(int) R_390_JMP_SLOT]; + case BFD_RELOC_390_RELATIVE: + return &elf_howto_table[(int) R_390_RELATIVE]; + case BFD_RELOC_32_GOTOFF: + return &elf_howto_table[(int) R_390_GOTOFF]; + case BFD_RELOC_390_GOTPC: + return &elf_howto_table[(int) R_390_GOTPC]; + case BFD_RELOC_390_GOT16: + return &elf_howto_table[(int) R_390_GOT16]; + case BFD_RELOC_16_PCREL: + return &elf_howto_table[(int) R_390_PC16]; + case BFD_RELOC_390_PC16DBL: + return &elf_howto_table[(int) R_390_PC16DBL]; + case BFD_RELOC_390_PLT16DBL: + return &elf_howto_table[(int) R_390_PLT16DBL]; + case BFD_RELOC_VTABLE_INHERIT: + return &elf32_s390_vtinherit_howto; + case BFD_RELOC_VTABLE_ENTRY: + return &elf32_s390_vtentry_howto; + default: + break; + } + return 0; +} + +/* We need to use ELF32_R_TYPE so we have our own copy of this function, + and elf32-s390.c has its own copy. */ + +static void +elf_s390_info_to_howto (abfd, cache_ptr, dst) + bfd *abfd ATTRIBUTE_UNUSED; + arelent *cache_ptr; + Elf_Internal_Rela *dst; +{ + switch (ELF32_R_TYPE(dst->r_info)) + { + case R_390_GNU_VTINHERIT: + cache_ptr->howto = &elf32_s390_vtinherit_howto; + break; + + case R_390_GNU_VTENTRY: + cache_ptr->howto = &elf32_s390_vtentry_howto; + break; + + default: + BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_390_max); + cache_ptr->howto = &elf_howto_table[ELF32_R_TYPE(dst->r_info)]; + } +} + +static boolean +elf_s390_is_local_label_name (abfd, name) + bfd *abfd; + const char *name; +{ + if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) + return true; + + return _bfd_elf_is_local_label_name (abfd, name); +} + +/* Functions for the 390 ELF linker. */ + +/* The name of the dynamic interpreter. This is put in the .interp + section. */ + +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" + +/* The nop opcode we use. */ + +#define s390_NOP 0x07070707 + + +/* The size in bytes of the first entry in the procedure linkage table. */ +#define PLT_FIRST_ENTRY_SIZE 32 +/* The size in bytes of an entry in the procedure linkage table. */ +#define PLT_ENTRY_SIZE 32 + +#define GOT_ENTRY_SIZE 4 + +/* The first three entries in a procedure linkage table are reserved, + and the initial contents are unimportant (we zero them out). + Subsequent entries look like this. See the SVR4 ABI 386 + supplement to see how this works. */ + +/* For the s390, simple addr offset can only be 0 - 4096. + To use the full 2 GB address space, several instructions + are needed to load an address in a register and execute + a branch( or just saving the address) + + Furthermore, only r 0 and 1 are free to use!!! */ + +/* The first 3 words in the GOT are then reserved. + Word 0 is the address of the dynamic table. + Word 1 is a pointer to a structure describing the object + Word 2 is used to point to the loader entry address. + + The code for position independand PLT entries looks like this: + + r12 holds addr of the current GOT at entry to the PLT + + The GOT holds the address in the PLT to be executed. + The loader then gets: + 24(15) = Pointer to the structure describing the object. + 28(15) = Offset in symbol table + + The loader must then find the module where the function is + and insert the address in the GOT. + + Note: 390 can only address +- 64 K relative. + We check if offset > 65536, then make a relative branch -64xxx + back to a previous defined branch + +PLT1: BASR 1,0 # 2 bytes + L 1,22(1) # 4 bytes Load offset in GOT in r 1 + L 1,(1,12) # 4 bytes Load address from GOT in r1 + BCR 15,1 # 2 bytes Jump to address +RET1: BASR 1,0 # 2 bytes Return from GOT 1st time + L 1,14(1) # 4 bytes Load offset in symol table in r1 + BRC 15,-x # 4 bytes Jump to start of PLT + .word 0 # 2 bytes filler + .long ? # 4 bytes offset in GOT + .long ? # 4 bytes offset into symbol table + + This was the general case. There are two additional, optimizes PLT + definitions. One for GOT offsets < 4096 and one for GOT offsets < 32768. + First the one for GOT offsets < 4096: + +PLT1: L 1,(12) # 4 bytes Load address from GOT in R1 + BCR 15,1 # 2 bytes Jump to address + .word 0,0,0 # 6 bytes filler +RET1: BASR 1,0 # 2 bytes Return from GOT 1st time + L 1,14(1) # 4 bytes Load offset in symbol table in r1 + BRC 15,-x # 4 bytes Jump to start of PLT + .word 0,0,0 # 6 bytes filler + .long ? # 4 bytes offset into symbol table + + Second the one for GOT offsets < 32768: + +PLT1: LHI 1, # 4 bytes Load offset in GOT to r1 + L 1,(1,12) # 4 bytes Load address from GOT to r1 + BCR 15,1 # 2 bytes Jump to address + .word 0 # 2 bytes filler +RET1: BASR 1,0 # 2 bytes Return from GOT 1st time + L 1,14(1) # 4 bytes Load offset in symbol table in r1 + BRC 15,-x # 4 bytes Jump to start of PLT + .word 0,0,0 # 6 bytes filler + .long ? # 4 bytes offset into symbol table + +Total = 32 bytes per PLT entry + + The code for static build PLT entries looks like this: + +PLT1: BASR 1,0 # 2 bytes + L 1,22(1) # 4 bytes Load address of GOT entry + L 1,0(0,1) # 4 bytes Load address from GOT in r1 + BCR 15,1 # 2 bytes Jump to address +RET1: BASR 1,0 # 2 bytes Return from GOT 1st time + L 1,14(1) # 4 bytes Load offset in symbol table in r1 + BRC 15,-x # 4 bytes Jump to start of PLT + .word 0 # 2 bytes filler + .long ? # 4 bytes address of GOT entry + .long ? # 4 bytes offset into symbol table */ + +#define PLT_PIC_ENTRY_WORD0 0x0d105810 +#define PLT_PIC_ENTRY_WORD1 0x10165811 +#define PLT_PIC_ENTRY_WORD2 0xc00007f1 +#define PLT_PIC_ENTRY_WORD3 0x0d105810 +#define PLT_PIC_ENTRY_WORD4 0x100ea7f4 + +#define PLT_PIC12_ENTRY_WORD0 0x5810c000 +#define PLT_PIC12_ENTRY_WORD1 0x07f10000 +#define PLT_PIC12_ENTRY_WORD2 0x00000000 +#define PLT_PIC12_ENTRY_WORD3 0x0d105810 +#define PLT_PIC12_ENTRY_WORD4 0x100ea7f4 + +#define PLT_PIC16_ENTRY_WORD0 0xa7180000 +#define PLT_PIC16_ENTRY_WORD1 0x5811c000 +#define PLT_PIC16_ENTRY_WORD2 0x07f10000 +#define PLT_PIC16_ENTRY_WORD3 0x0d105810 +#define PLT_PIC16_ENTRY_WORD4 0x100ea7f4 + +#define PLT_ENTRY_WORD0 0x0d105810 +#define PLT_ENTRY_WORD1 0x10165810 +#define PLT_ENTRY_WORD2 0x100007f1 +#define PLT_ENTRY_WORD3 0x0d105810 +#define PLT_ENTRY_WORD4 0x100ea7f4 + +/* The first PLT entry pushes the offset into the symbol table + from R1 onto the stack at 8(15) and the loader object info + at 12(15), loads the loader address in R1 and jumps to it. */ + +/* The first entry in the PLT for PIC code: + +PLT0: + ST 1,28(15) # R1 has offset into symbol table + L 1,4(12) # Get loader ino(object struct address) + ST 1,24(15) # Store address + L 1,8(12) # Entry address of loader in R1 + BR 1 # Jump to loader + + The first entry in the PLT for static code: + +PLT0: + ST 1,28(15) # R1 has offset into symbol table + BASR 1,0 + L 1,18(0,1) # Get address of GOT + MVC 24(4,15),4(1) # Move loader ino to stack + L 1,8(1) # Get address of loader + BR 1 # Jump to loader + .word 0 # filler + .long got # address of GOT */ + +#define PLT_PIC_FIRST_ENTRY_WORD0 0x5010f01c +#define PLT_PIC_FIRST_ENTRY_WORD1 0x5810c004 +#define PLT_PIC_FIRST_ENTRY_WORD2 0x5010f018 +#define PLT_PIC_FIRST_ENTRY_WORD3 0x5810c008 +#define PLT_PIC_FIRST_ENTRY_WORD4 0x07f10000 + +#define PLT_FIRST_ENTRY_WORD0 0x5010f01c +#define PLT_FIRST_ENTRY_WORD1 0x0d105810 +#define PLT_FIRST_ENTRY_WORD2 0x1012D203 +#define PLT_FIRST_ENTRY_WORD3 0xf0181004 +#define PLT_FIRST_ENTRY_WORD4 0x58101008 +#define PLT_FIRST_ENTRY_WORD5 0x07f10000 + +/* The s390 linker needs to keep track of the number of relocs that it + decides to copy in check_relocs for each symbol. This is so that + it can discard PC relative relocs if it doesn't need them when + linking with -Bsymbolic. We store the information in a field + extending the regular ELF linker hash table. */ + +/* This structure keeps track of the number of PC relative relocs we + have copied for a given symbol. */ + +struct elf_s390_pcrel_relocs_copied +{ + /* Next section. */ + struct elf_s390_pcrel_relocs_copied *next; + /* A section in dynobj. */ + asection *section; + /* Number of relocs copied in this section. */ + bfd_size_type count; +}; + +/* s390 ELF linker hash entry. */ + +struct elf_s390_link_hash_entry +{ + struct elf_link_hash_entry root; + + /* Number of PC relative relocs copied for this symbol. */ + struct elf_s390_pcrel_relocs_copied *pcrel_relocs_copied; +}; + +/* s390 ELF linker hash table. */ + +struct elf_s390_link_hash_table +{ + struct elf_link_hash_table root; +}; + +/* Declare this now that the above structures are defined. */ + +static boolean elf_s390_discard_copies + PARAMS ((struct elf_s390_link_hash_entry *, PTR)); + +/* Traverse an s390 ELF linker hash table. */ + +#define elf_s390_link_hash_traverse(table, func, info) \ + (elf_link_hash_traverse \ + (&(table)->root, \ + (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ + (info))) + +/* Get the s390 ELF linker hash table from a link_info structure. */ + +#define elf_s390_hash_table(p) \ + ((struct elf_s390_link_hash_table *) ((p)->hash)) + +/* Create an entry in an s390 ELF linker hash table. */ + +static struct bfd_hash_entry * +elf_s390_link_hash_newfunc (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; +{ + struct elf_s390_link_hash_entry *ret = + (struct elf_s390_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == (struct elf_s390_link_hash_entry *) NULL) + ret = ((struct elf_s390_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf_s390_link_hash_entry))); + if (ret == (struct elf_s390_link_hash_entry *) NULL) + return (struct bfd_hash_entry *) ret; + + /* Call the allocation method of the superclass. */ + ret = ((struct elf_s390_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + if (ret != (struct elf_s390_link_hash_entry *) NULL) + { + ret->pcrel_relocs_copied = NULL; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Create an s390 ELF linker hash table. */ + +static struct bfd_link_hash_table * +elf_s390_link_hash_table_create (abfd) + bfd *abfd; +{ + struct elf_s390_link_hash_table *ret; + + ret = ((struct elf_s390_link_hash_table *) + bfd_alloc (abfd, sizeof (struct elf_s390_link_hash_table))); + if (ret == (struct elf_s390_link_hash_table *) NULL) + return NULL; + + if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, + elf_s390_link_hash_newfunc)) + { + bfd_release (abfd, ret); + return NULL; + } + + return &ret->root.root; +} + + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table or procedure linkage + table. */ + +static boolean +elf_s390_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *srelgot; + asection *sreloc; + + if (info->relocateable) + return true; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_offsets (abfd); + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + r_symndx = ELF32_R_SYM (rel->r_info); + + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + + /* Some relocs require a global offset table. */ + if (dynobj == NULL) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOTOFF: + case R_390_GOTPC: + elf_hash_table (info)->dynobj = dynobj = abfd; + if (! _bfd_elf_create_got_section (dynobj, info)) + return false; + break; + + default: + break; + } + } + + + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + /* This symbol requires a global offset table entry. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + + if (srelgot == NULL + && (h != NULL || info->shared)) + { + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + if (srelgot == NULL) + { + srelgot = bfd_make_section (dynobj, ".rela.got"); + if (srelgot == NULL + || ! bfd_set_section_flags (dynobj, srelgot, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (dynobj, srelgot, 2)) + return false; + } + } + + if (h != NULL) + { + if (h->got.refcount == -1) + { + h->got.refcount = 1; + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + sgot->_raw_size += 4; + srelgot->_raw_size += sizeof (Elf32_External_Rela); + } + else + h->got.refcount += 1; + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts == NULL) + { + size_t size; + + size = symtab_hdr->sh_info * sizeof (bfd_signed_vma); + local_got_refcounts = (bfd_signed_vma *) + bfd_alloc (abfd, size); + if (local_got_refcounts == NULL) + return false; + elf_local_got_refcounts (abfd) = local_got_refcounts; + memset (local_got_refcounts, -1, size); + } + if (local_got_refcounts[r_symndx] == -1) + { + local_got_refcounts[r_symndx] = 1; + + sgot->_raw_size += 4; + if (info->shared) + { + /* If we are generating a shared object, we need to + output a R_390_RELATIVE reloc so that the dynamic + linker can adjust this GOT entry. */ + srelgot->_raw_size += sizeof (Elf32_External_Rela); + } + } + else + local_got_refcounts[r_symndx] += 1; + } + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + /* This symbol requires a procedure linkage table entry. We + actually build the entry in adjust_dynamic_symbol, + because this might be a case of linking PIC code which is + never referenced by a dynamic object, in which case we + don't need to generate a procedure linkage table entry + after all. */ + + /* If this is a local symbol, we resolve it directly without + creating a procedure linkage table entry. */ + if (h == NULL) + continue; + + if (h->plt.refcount == -1) + { + h->plt.refcount = 1; + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + } + else + h->plt.refcount += 1; + break; + + case R_390_8: + case R_390_16: + case R_390_32: + case R_390_PC16: + case R_390_PC16DBL: + case R_390_PC32: + if (h != NULL) + h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + + /* If we are creating a shared library, and this is a reloc + against a global symbol, or a non PC relative reloc + against a local symbol, then we need to copy the reloc + into the shared library. However, if we are linking with + -Bsymbolic, we do not need to copy a reloc against a + global symbol which is defined in an object we are + including in the link (i.e., DEF_REGULAR is set). At + this point we have not seen all the input files, so it is + possible that DEF_REGULAR is not set now but will be set + later (it is never cleared). We account for that + possibility below by storing information in the + pcrel_relocs_copied field of the hash table entry. */ + if (info->shared + && (sec->flags & SEC_ALLOC) != 0 + && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 && + ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL && + ELF32_R_TYPE (rel->r_info) != R_390_PC32) + || (h != NULL + && (! info->symbolic + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + { + /* When creating a shared object, we must copy these + reloc types into the output file. We create a reloc + section in dynobj and make room for this reloc. */ + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name)); + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (abfd, sec), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + if (sreloc == NULL) + { + flagword flags; + + sreloc = bfd_make_section (dynobj, name); + flags = (SEC_HAS_CONTENTS | SEC_READONLY + | SEC_IN_MEMORY | SEC_LINKER_CREATED); + if ((sec->flags & SEC_ALLOC) != 0) + flags |= SEC_ALLOC | SEC_LOAD; + if (sreloc == NULL + || ! bfd_set_section_flags (dynobj, sreloc, flags) + || ! bfd_set_section_alignment (dynobj, sreloc, 2)) + return false; + } + } + + sreloc->_raw_size += sizeof (Elf32_External_Rela); + + /* If we are linking with -Bsymbolic, and this is a + global symbol, we count the number of PC relative + relocations we have entered for this symbol, so that + we can discard them again if the symbol is later + defined by a regular object. Note that this function + is only called if we are using an elf_s390 linker + hash table, which means that h is really a pointer to + an elf_s390_link_hash_entry. */ + if (h != NULL + && (ELF32_R_TYPE (rel->r_info) == R_390_PC16 || + ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL || + ELF32_R_TYPE (rel->r_info) == R_390_PC32)) + { + struct elf_s390_link_hash_entry *eh; + struct elf_s390_pcrel_relocs_copied *p; + + eh = (struct elf_s390_link_hash_entry *) h; + + for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) + if (p->section == sreloc) + break; + + if (p == NULL) + { + p = ((struct elf_s390_pcrel_relocs_copied *) + bfd_alloc (dynobj, sizeof *p)); + if (p == NULL) + return false; + p->next = eh->pcrel_relocs_copied; + eh->pcrel_relocs_copied = p; + p->section = sreloc; + p->count = 0; + } + + ++p->count; + } + } + + break; + + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_390_GNU_VTINHERIT: + if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return false; + break; + + /* This relocation describes which C++ vtable entries are actually + used. Record for later use during GC. */ + case R_390_GNU_VTENTRY: + if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return false; + break; + + default: + break; + } + } + + return true; +} + +/* Return the section that should be marked against GC for a given + relocation. */ + +static asection * +elf_s390_gc_mark_hook (abfd, info, rel, h, sym) + bfd *abfd; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + Elf_Internal_Rela *rel; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + if (h != NULL) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_390_GNU_VTINHERIT: + case R_390_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } + } + } + else + { + if (!(elf_bad_symtab (abfd) + && ELF_ST_BIND (sym->st_info) != STB_LOCAL) + && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) + && sym->st_shndx != SHN_COMMON)) + { + return bfd_section_from_elf_index (abfd, sym->st_shndx); + } + } + + return NULL; +} + +/* Update the got entry reference counts for the section being removed. */ + +static boolean +elf_s390_gc_sweep_hook (abfd, info, sec, relocs) + bfd *abfd ATTRIBUTE_UNUSED; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + asection *sec ATTRIBUTE_UNUSED; + const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel, *relend; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + bfd *dynobj; + asection *sgot; + asection *srelgot; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + dynobj = elf_hash_table (info)->dynobj; + if (dynobj == NULL) + return true; + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOTOFF: + case R_390_GOTPC: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->got.refcount > 0) + { + h->got.refcount -= 1; + if (h->got.refcount == 0) + { + sgot->_raw_size -= 4; + srelgot->_raw_size -= sizeof (Elf32_External_Rela); + } + } + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + { + local_got_refcounts[r_symndx] -= 1; + if (local_got_refcounts[r_symndx] == 0) + { + sgot->_raw_size -= 4; + if (info->shared) + srelgot->_raw_size -= sizeof (Elf32_External_Rela); + } + } + } + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + break; + + default: + break; + } + + return true; +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static boolean +elf_s390_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + bfd *dynobj; + asection *s; + unsigned int power_of_two; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) + || h->weakdef != NULL + || ((h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_REF_REGULAR) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later + (although we could actually do it here). */ + if (h->type == STT_FUNC + || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) + { + if ((! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) + || (info->shared && h->plt.refcount <= 0)) + { + /* This case can occur if we saw a PLT32 reloc in an input + file, but the symbol was never referred to by a dynamic + object, or if all references were garbage collected. In + such a case, we don't actually need to build a procedure + linkage table, and we can just do a PC32 reloc instead. */ + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + return true; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + s = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + + /* The first entry in .plt is reserved. */ + if (s->_raw_size == 0) + s->_raw_size = PLT_FIRST_ENTRY_SIZE; + + /* If this symbol is not defined in a regular file, and we are + not generating a shared library, then set the symbol to this + location in the .plt. This is required to make function + pointers compare as equal between the normal executable and + the shared library. */ + if (! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + } + + h->plt.offset = s->_raw_size; + + /* Make room for this entry. */ + s->_raw_size += PLT_ENTRY_SIZE; + + /* We also need to make an entry in the .got.plt section, which + will be placed in the .got section by the linker script. */ + s = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (s != NULL); + s->_raw_size += GOT_ENTRY_SIZE; + + /* We also need to make an entry in the .rela.plt section. */ + s = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (s != NULL); + s->_raw_size += sizeof (Elf32_External_Rela); + + return true; + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->weakdef != NULL) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || h->weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return true; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) + return true; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_section_by_name (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_390_COPY reloc to tell the dynamic linker + to copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rel.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->_raw_size += sizeof (Elf32_External_Rela); + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + } + + /* We need to figure out the alignment required for this symbol. I + have no idea how ELF linkers handle this. */ + power_of_two = bfd_log2 (h->size); + if (power_of_two > 3) + power_of_two = 3; + + /* Apply the required alignment. */ + s->_raw_size = BFD_ALIGN (s->_raw_size, + (bfd_size_type) (1 << power_of_two)); + if (power_of_two > bfd_get_section_alignment (dynobj, s)) + { + if (! bfd_set_section_alignment (dynobj, s, power_of_two)) + return false; + } + + /* Define the symbol as being at this point in the section. */ + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + + /* Increment the section size to make room for the symbol. */ + s->_raw_size += h->size; + + return true; +} + +/* Set the sizes of the dynamic sections. */ + +static boolean +elf_s390_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *s; + boolean reltext; + boolean relocs; + boolean plt; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_section_by_name (dynobj, ".rela.got"); + if (s != NULL) + s->_raw_size = 0; + } + + /* If this is a -Bsymbolic shared link, then we need to discard all + PC relative relocs against symbols defined in a regular object. + We allocated space for them in the check_relocs routine, but we + will not fill them in in the relocate_section routine. */ + if (info->shared) + elf_s390_link_hash_traverse (elf_s390_hash_table (info), + elf_s390_discard_copies, + (PTR) info); + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + plt = false; + reltext = false; + relocs = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + boolean strip; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + strip = false; + + if (strcmp (name, ".plt") == 0) + { + if (s->_raw_size == 0) + { + /* Strip this section if we don't need it; see the + comment below. */ + strip = true; + } + else + { + /* Remember whether there is a PLT. */ + plt = true; + } + } + else if (strncmp (name, ".rela", 5) == 0) + { + if (s->_raw_size == 0) + { + /* If we don't need this section, strip it from the + output file. This is to handle .rela.bss and + .rel.plt. We must create it in + create_dynamic_sections, because it must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + strip = true; + } + else + { + asection *target; + + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (strcmp (name, ".rela.plt") != 0) + { + const char *outname; + + relocs = true; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL + entry. The entries in the .rela.plt section + really apply to the .got section, which we + created ourselves and so know is not readonly. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 5); + if (target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + reltext = true; + } + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (strncmp (name, ".got", 4) != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (strip) + { + _bfd_strip_section_from_output (info, s); + continue; + } + + /* Allocate memory for the section contents. */ + s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); + if (s->contents == NULL && s->_raw_size != 0) + return false; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in elf_s390_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (plt) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) + return false; + } + + if (relocs) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, + sizeof (Elf32_External_Rela))) + return false; + } + + if (reltext) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + info->flags |= DF_TEXTREL; + } + } + + return true; +} + +/* This function is called via elf_s390_link_hash_traverse if we are + creating a shared object with -Bsymbolic. It discards the space + allocated to copy PC relative relocs against symbols which are + defined in regular objects. We allocated space for them in the + check_relocs routine, but we won't fill them in in the + relocate_section routine. */ + +/*ARGSUSED*/ +static boolean +elf_s390_discard_copies (h, inf) + struct elf_s390_link_hash_entry *h; + PTR inf; +{ + struct elf_s390_pcrel_relocs_copied *s; + struct bfd_link_info *info = (struct bfd_link_info *) inf; + + /* If a symbol has been forced local or we have found a regular + definition for the symbolic link case, then we won't be needing + any relocs. */ + if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 + || info->symbolic)) + { + for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) + s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); + } + return true; +} +/* Relocate a 390 ELF section. */ + +static boolean +elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + struct bfd_link_info *info; + bfd *input_bfd; + asection *input_section; + bfd_byte *contents; + Elf_Internal_Rela *relocs; + Elf_Internal_Sym *local_syms; + asection **local_sections; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + asection *sgot; + asection *splt; + asection *sreloc; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + local_got_offsets = elf_local_got_offsets (input_bfd); + + sgot = NULL; + splt = NULL; + sreloc = NULL; + if (dynobj != NULL) + { + splt = bfd_get_section_by_name (dynobj, ".plt"); + sgot = bfd_get_section_by_name (dynobj, ".got"); + } + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++) + { + int r_type; + reloc_howto_type *howto; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sec; + bfd_vma relocation; + bfd_reloc_status_type r; + + r_type = ELF32_R_TYPE (rel->r_info); + if (r_type == (int) R_390_GNU_VTINHERIT + || r_type == (int) R_390_GNU_VTENTRY) + continue; + if (r_type < 0 || r_type >= (int) R_390_max) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + howto = elf_howto_table + r_type; + + r_symndx = ELF32_R_SYM (rel->r_info); + + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sec = local_sections[r_symndx]; + rel->r_addend += sec->output_offset + sym->st_value; + } + } + + continue; + } + + /* This is a final link. */ + h = NULL; + sym = NULL; + sec = NULL; + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = (sec->output_section->vma + + sec->output_offset + + sym->st_value); + } + else + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sec = h->root.u.def.section; + if (r_type == R_390_GOTPC + || ((r_type == R_390_PLT16DBL || + r_type == R_390_PLT32) + && splt != NULL + && h->plt.offset != (bfd_vma) -1) + || ((r_type == R_390_GOT12 || + r_type == R_390_GOT16 || + r_type == R_390_GOT32) + && elf_hash_table (info)->dynamic_sections_created + && (! info->shared + || (! info->symbolic && h->dynindx != -1) + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)) + || (info->shared + && ((! info->symbolic && h->dynindx != -1) + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0) + && ( r_type == R_390_8 || + r_type == R_390_16 || + r_type == R_390_32 || + r_type == R_390_PC16 || + r_type == R_390_PC16DBL || + r_type == R_390_PC32) + && ((input_section->flags & SEC_ALLOC) != 0 + /* DWARF will emit R_386_32 relocations in its + sections against symbols defined externally + in shared libraries. We can't do anything + with them here. */ + || ((input_section->flags & SEC_DEBUGGING) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))) + { + /* In these cases, we don't need the relocation + value. We check specially because in some + obscure cases sec->output_section will be NULL. */ + relocation = 0; + } + else if (sec->output_section == NULL) + { + (*_bfd_error_handler) + (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), + bfd_get_filename (input_bfd), h->root.root.string, + bfd_get_section_name (input_bfd, input_section)); + relocation = 0; + } + else + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else if (h->root.type == bfd_link_hash_undefweak) + relocation = 0; + else if (info->shared && !info->symbolic + && !info->no_undefined + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) + relocation = 0; + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset, + (!info->shared || info->no_undefined + || ELF_ST_VISIBILITY (h->other))))) + return false; + relocation = 0; + } + } + + switch (r_type) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + /* Relocation is to the entry for this symbol in the global + offset table. */ + BFD_ASSERT (sgot != NULL); + + if (h != NULL) + { + bfd_vma off; + + off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. We must initialize + this entry in the global offset table. Since the + offset must always be a multiple of 2, we use the + least significant bit to record whether we have + initialized it already. + + When doing a dynamic link, we create a .rel.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + sgot->contents + off); + h->got.offset |= 1; + } + } + relocation = sgot->output_offset + off; + } + else + { + bfd_vma off; + + BFD_ASSERT (local_got_offsets != NULL + && local_got_offsets[r_symndx] != (bfd_vma) -1); + + off = local_got_offsets[r_symndx]; + + /* The offset must always be a multiple of 4. We use + the least significant bit to record whether we have + already generated the necessary reloc. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, sgot->contents + off); + + if (info->shared) + { + asection *srelgot; + Elf_Internal_Rela outrel; + + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); + outrel.r_addend = relocation; + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + (((Elf32_External_Rela *) + srelgot->contents) + + srelgot->reloc_count)); + ++srelgot->reloc_count; + } + + local_got_offsets[r_symndx] |= 1; + } + + relocation = sgot->output_offset + off; + } + + + break; + + case R_390_GOTOFF: + /* Relocation is relative to the start of the global offset + table. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + /* Note that sgot->output_offset is not involved in this + calculation. We always want the start of .got. If we + defined _GLOBAL_OFFSET_TABLE in a different way, as is + permitted by the ABI, we might have to change this + calculation. */ + relocation -= sgot->output_section->vma; + + break; + + case R_390_GOTPC: + /* Use global offset table as symbol value. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + relocation = sgot->output_section->vma; + + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + /* Relocation is to the entry for this symbol in the + procedure linkage table. */ + + /* Resolve a PLT32 reloc against a local symbol directly, + without using the procedure linkage table. */ + if (h == NULL) + break; + + if (h->plt.offset == (bfd_vma) -1 || splt == NULL) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + break; + } + + relocation = (splt->output_section->vma + + splt->output_offset + + h->plt.offset); + + break; + + case R_390_8: + case R_390_16: + case R_390_32: + case R_390_PC16: + case R_390_PC16DBL: + case R_390_PC32: + if (info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && ((r_type != R_390_PC16 && + r_type != R_390_PC16DBL && + r_type != R_390_PC32) + || (h != NULL + && h->dynindx != -1 + && (! info->symbolic + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + { + Elf_Internal_Rela outrel; + boolean skip, relocate; + + /* When generating a shared object, these relocations + are copied into the output file to be resolved at run + time. */ + + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (input_bfd, + elf_elfheader (input_bfd)->e_shstrndx, + elf_section_data (input_section)->rel_hdr.sh_name)); + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (input_bfd, + input_section), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + BFD_ASSERT (sreloc != NULL); + } + + skip = false; + + if (elf_section_data (input_section)->stab_info == NULL) + outrel.r_offset = rel->r_offset; + else + { + bfd_vma off; + + off = (_bfd_stab_section_offset + (output_bfd, &elf_hash_table (info)->stab_info, + input_section, + &elf_section_data (input_section)->stab_info, + rel->r_offset)); + if (off == (bfd_vma) -1) + skip = true; + outrel.r_offset = off; + } + + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + if (skip) + { + memset (&outrel, 0, sizeof outrel); + relocate = false; + } + else if (r_type == R_390_PC16 || + r_type == R_390_PC16DBL || + r_type == R_390_PC32) + { + BFD_ASSERT (h != NULL && h->dynindx != -1); + relocate = false; + outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + /* h->dynindx may be -1 if this symbol was marked to + become local. */ + if (h == NULL + || ((info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) != 0)) + { + relocate = true; + outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + BFD_ASSERT (h->dynindx != -1); + relocate = false; + outrel.r_info = ELF32_R_INFO (h->dynindx, R_390_32); + outrel.r_addend = relocation + rel->r_addend; + } + } + + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + (((Elf32_External_Rela *) + sreloc->contents) + + sreloc->reloc_count)); + ++sreloc->reloc_count; + + /* If this reloc is against an external symbol, we do + not want to fiddle with the addend. Otherwise, we + need to include the symbol value so that it becomes + an addend for the dynamic reloc. */ + if (! relocate) + continue; + } + + break; + + default: + break; + } + + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + + if (r != bfd_reloc_ok) + { + switch (r) + { + default: + case bfd_reloc_outofrange: + abort (); + case bfd_reloc_overflow: + { + const char *name; + + if (h != NULL) + name = h->root.root.string; + else + { + name = bfd_elf_string_from_elf_section (input_bfd, + symtab_hdr->sh_link, + sym->st_name); + if (name == NULL) + return false; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + if (! ((*info->callbacks->reloc_overflow) + (info, name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; + } + break; + } + } + } + + return true; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static boolean +elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym) + bfd *output_bfd; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + bfd *dynobj; + + dynobj = elf_hash_table (info)->dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + asection *splt; + asection *srela; + Elf_Internal_Rela rela; + bfd_vma relative_offset; + bfd_vma got_offset; + bfd_vma plt_index; + asection *sgot; + + /* This symbol has an entry in the procedure linkage table. Set + it up. */ + + BFD_ASSERT (h->dynindx != -1); + + splt = bfd_get_section_by_name (dynobj, ".plt"); + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + srela = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); + + /* Calc. index no. + Current offset - size first entry / entry size. */ + plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; + + /* Offset in GOT is PLT index plus GOT headers(3) times 4, + addr & GOT addr. */ + got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; + + /* S390 uses halfwords for relative branch calc! */ + relative_offset = - ((PLT_FIRST_ENTRY_SIZE + + (PLT_ENTRY_SIZE * plt_index) + 18)/2); + /* If offset is > 32768, branch to a previous branch + 390 can only handle +-64 K jumps. */ + if ( -32768 > (int)relative_offset ) + relative_offset = -(((65536/PLT_ENTRY_SIZE-1)*PLT_ENTRY_SIZE)/2); + + /* Fill in the entry in the procedure linkage table. */ + if (!info->shared) + { + bfd_put_32 (output_bfd, PLT_ENTRY_WORD0, + splt->contents + h->plt.offset); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, + splt->contents + h->plt.offset + 4); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, + splt->contents + h->plt.offset + 8); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD3, + splt->contents + h->plt.offset + 12); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD4, + splt->contents + h->plt.offset + 16); + bfd_put_32 (output_bfd, 0+(relative_offset << 16), + splt->contents + h->plt.offset + 20); + bfd_put_32 (output_bfd, + (sgot->output_section->vma + + sgot->output_offset + + got_offset), + splt->contents + h->plt.offset + 24); + } + else if (got_offset < 4096) + { + bfd_put_32 (output_bfd, PLT_PIC12_ENTRY_WORD0 + got_offset, + splt->contents + h->plt.offset); + bfd_put_32 (output_bfd, PLT_PIC12_ENTRY_WORD1, + splt->contents + h->plt.offset + 4); + bfd_put_32 (output_bfd, PLT_PIC12_ENTRY_WORD2, + splt->contents + h->plt.offset + 8); + bfd_put_32 (output_bfd, PLT_PIC12_ENTRY_WORD3, + splt->contents + h->plt.offset + 12); + bfd_put_32 (output_bfd, PLT_PIC12_ENTRY_WORD4, + splt->contents + h->plt.offset + 16); + bfd_put_32 (output_bfd, 0+(relative_offset << 16), + splt->contents + h->plt.offset + 20); + bfd_put_32 (output_bfd, 0, + splt->contents + h->plt.offset + 24); + } + else if (got_offset < 32768) + { + bfd_put_32 (output_bfd, PLT_PIC16_ENTRY_WORD0 + got_offset, + splt->contents + h->plt.offset); + bfd_put_32 (output_bfd, PLT_PIC16_ENTRY_WORD1, + splt->contents + h->plt.offset + 4); + bfd_put_32 (output_bfd, PLT_PIC16_ENTRY_WORD2, + splt->contents + h->plt.offset + 8); + bfd_put_32 (output_bfd, PLT_PIC16_ENTRY_WORD3, + splt->contents + h->plt.offset + 12); + bfd_put_32 (output_bfd, PLT_PIC16_ENTRY_WORD4, + splt->contents + h->plt.offset + 16); + bfd_put_32 (output_bfd, 0+(relative_offset << 16), + splt->contents + h->plt.offset + 20); + bfd_put_32 (output_bfd, 0, + splt->contents + h->plt.offset + 24); + } + else + { + bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0, + splt->contents + h->plt.offset); + bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1, + splt->contents + h->plt.offset + 4); + bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD2, + splt->contents + h->plt.offset + 8); + bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD3, + splt->contents + h->plt.offset + 12); + bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD4, + splt->contents + h->plt.offset + 16); + bfd_put_32 (output_bfd, 0+(relative_offset << 16), + splt->contents + h->plt.offset + 20); + bfd_put_32 (output_bfd, got_offset, + splt->contents + h->plt.offset + 24); + } + /* Insert offset into reloc. table here. */ + bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), + splt->contents + h->plt.offset + 28); + /* Fill in the entry in the .rela.plt section. */ + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + got_offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_390_JMP_SLOT); + rela.r_addend = 0; + bfd_elf32_swap_reloca_out (output_bfd, &rela, + ((Elf32_External_Rela *) srela->contents + + plt_index )); + + /* Fill in the entry in the global offset table. + Points to instruction after GOT offset. */ + bfd_put_32 (output_bfd, + (splt->output_section->vma + + splt->output_offset + + h->plt.offset + + 12), + sgot->contents + got_offset); + + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + } + } + + if (h->got.offset != (bfd_vma) -1) + { + asection *sgot; + asection *srela; + Elf_Internal_Rela rela; + + /* This symbol has an entry in the global offset table. Set it + up. */ + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srela = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srela != NULL); + + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset &~ 1)); + + /* If this is a static link, or it is a -Bsymbolic link and the + symbol is defined locally or was forced to be local because + of a version file, we just want to emit a RELATIVE reloc. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + rela.r_info = ELF32_R_INFO (0, R_390_RELATIVE); + rela.r_addend = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + } + else + { + BFD_ASSERT((h->got.offset & 1) == 0); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_390_GLOB_DAT); + rela.r_addend = 0; + } + + bfd_elf32_swap_reloca_out (output_bfd, &rela, + ((Elf32_External_Rela *) srela->contents + + srela->reloc_count)); + ++srela->reloc_count; + } + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) + { + asection *s; + Elf_Internal_Rela rela; + + /* This symbols needs a copy reloc. Set it up. */ + + BFD_ASSERT (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)); + + + s = bfd_get_section_by_name (h->root.u.def.section->owner, + ".rela.bss"); + BFD_ASSERT (s != NULL); + + rela.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_390_COPY); + rela.r_addend = 0; + bfd_elf32_swap_reloca_out (output_bfd, &rela, + ((Elf32_External_Rela *) s->contents + + s->reloc_count)); + ++s->reloc_count; + } + + /* Mark some specially defined symbols as absolute. */ + if (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + + return true; +} + +/* Finish up the dynamic sections. */ + +static boolean +elf_s390_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *sdyn; + asection *sgot; + + dynobj = elf_hash_table (info)->dynobj; + + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (sgot != NULL); + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + asection *splt; + Elf32_External_Dyn *dyncon, *dynconend; + + BFD_ASSERT (sdyn != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char *name; + asection *s; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_PLTGOT: + name = ".got"; + goto get_vma; + case DT_JMPREL: + name = ".rela.plt"; + get_vma: + s = bfd_get_section_by_name(output_bfd, name); + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTRELSZ: + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + BFD_ASSERT (s != NULL); + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size; + else + dyn.d_un.d_val = s->_raw_size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + } + } + + /* Fill in the special first entry in the procedure linkage table. */ + splt = bfd_get_section_by_name (dynobj, ".plt"); + if (splt && splt->_raw_size > 0) + { + memset (splt->contents, 0, PLT_FIRST_ENTRY_SIZE); + if (info->shared) + { + bfd_put_32 (output_bfd, PLT_PIC_FIRST_ENTRY_WORD0, + splt->contents ); + bfd_put_32 (output_bfd, PLT_PIC_FIRST_ENTRY_WORD1, + splt->contents +4 ); + bfd_put_32 (output_bfd, PLT_PIC_FIRST_ENTRY_WORD2, + splt->contents +8 ); + bfd_put_32 (output_bfd, PLT_PIC_FIRST_ENTRY_WORD3, + splt->contents +12 ); + bfd_put_32 (output_bfd, PLT_PIC_FIRST_ENTRY_WORD4, + splt->contents +16 ); + } + else + { + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD0, + splt->contents ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD1, + splt->contents +4 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD2, + splt->contents +8 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD3, + splt->contents +12 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD4, + splt->contents +16 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD5, + splt->contents +20 ); + bfd_put_32 (output_bfd, + sgot->output_section->vma + sgot->output_offset, + splt->contents + 24); + } + elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; + } + + } + + /* Set the first entry in the global offset table to the address of + the dynamic section. */ + if (sgot->_raw_size > 0) + { + if (sdyn == NULL) + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); + else + bfd_put_32 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + sgot->contents); + + /* One entry for shared object struct ptr. */ + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); + /* One entry for _dl_runtime_resolve. */ + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); + } + + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; + + return true; +} + +static boolean +elf_s390_object_p (abfd) + bfd *abfd; +{ + return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_esa); +} + +#define TARGET_BIG_SYM bfd_elf32_s390_vec +#define TARGET_BIG_NAME "elf32-s390" +#define ELF_ARCH bfd_arch_s390 +#define ELF_MACHINE_CODE EM_S390 +#define ELF_MACHINE_ALT1 EM_S390_OLD +#define ELF_MAXPAGESIZE 0x1000 + +#define elf_backend_can_gc_sections 1 +#define elf_backend_want_got_plt 1 +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 12 +#define elf_backend_plt_header_size PLT_ENTRY_SIZE + +#define elf_info_to_howto elf_s390_info_to_howto + +#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link +#define bfd_elf32_bfd_is_local_label_name elf_s390_is_local_label_name +#define bfd_elf32_bfd_link_hash_table_create elf_s390_link_hash_table_create +#define bfd_elf32_bfd_reloc_type_lookup elf_s390_reloc_type_lookup + +#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol +#define elf_backend_check_relocs elf_s390_check_relocs +#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections +#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections +#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol +#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook +#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook +#define elf_backend_relocate_section elf_s390_relocate_section +#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections + +#define elf_backend_object_p elf_s390_object_p + +#include "elf32-target.h" diff --git a/bfd/elf64-s390.c b/bfd/elf64-s390.c new file mode 100644 index 0000000..9296a26 --- /dev/null +++ b/bfd/elf64-s390.c @@ -0,0 +1,2178 @@ +/* IBM S/390-specific support for 64-bit ELF + Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Contributed Martin Schwidefsky (schwidefsky@de.ibm.com). + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" +#include "elf-bfd.h" + +static reloc_howto_type *elf_s390_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); +static void elf_s390_info_to_howto + PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); +static boolean elf_s390_is_local_label_name PARAMS ((bfd *, const char *)); +static struct bfd_hash_entry *elf_s390_link_hash_newfunc + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); +static struct bfd_link_hash_table *elf_s390_link_hash_table_create + PARAMS ((bfd *)); +static boolean elf_s390_check_relocs + PARAMS ((bfd *, struct bfd_link_info *, asection *, + const Elf_Internal_Rela *)); +static boolean elf_s390_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); +static boolean elf_s390_size_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean elf_s390_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean elf_s390_finish_dynamic_symbol + PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, + Elf_Internal_Sym *)); +static boolean elf_s390_finish_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); + +#define USE_RELA 1 /* We want RELA relocations, not REL. */ + +#include "elf/s390.h" + +/* In case we're on a 32-bit machine, construct a 64-bit "-1" value + from smaller values. Start with zero, widen, *then* decrement. */ +#define MINUS_ONE (((bfd_vma)0) - 1) + +/* The relocation "howto" table. */ +static reloc_howto_type elf_howto_table[] = +{ + HOWTO (R_390_NONE, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_390_NONE", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false), /* pcrel_offset */ + + HOWTO(R_390_8, 0, 0, 8, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_8", false, 0,0x000000ff, false), + HOWTO(R_390_12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_12", false, 0,0x00000fff, false), + HOWTO(R_390_16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_16", false, 0,0x0000ffff, false), + HOWTO(R_390_32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_32", false, 0,0xffffffff, false), + HOWTO(R_390_PC32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32", false, 0,0xffffffff, true), + HOWTO(R_390_GOT12, 0, 1, 12, false, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_GOT12", false, 0,0x00000fff, false), + HOWTO(R_390_GOT32, 0, 2, 32, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT32", false, 0,0xffffffff, false), + HOWTO(R_390_PLT32, 0, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32", false, 0,0xffffffff, true), + HOWTO(R_390_COPY, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", false, 0,MINUS_ONE, false), + HOWTO(R_390_GLOB_DAT, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",false, 0,MINUS_ONE, false), + HOWTO(R_390_JMP_SLOT, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",false, 0,MINUS_ONE, false), + HOWTO(R_390_RELATIVE, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",false, 0,MINUS_ONE, false), + HOWTO(R_390_GOTOFF, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", false, 0,MINUS_ONE, false), + HOWTO(R_390_GOTPC, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", false, 0,MINUS_ONE, true), + HOWTO(R_390_GOT16, 0, 1, 16, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT16", false, 0,0x0000ffff, false), + HOWTO(R_390_PC16, 0, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16", false, 0,0x0000ffff, true), + HOWTO(R_390_PC16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16DBL", false, 0,0x0000ffff, true), + HOWTO(R_390_PLT16DBL, 1, 1, 16, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT16DBL", false, 0,0x0000ffff, true), + HOWTO(R_390_PC32DBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32DBL", false, 0,0xffffffff, true), + HOWTO(R_390_PLT32DBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32DBL", false, 0,0xffffffff, true), + HOWTO(R_390_GOTPCDBL, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPCDBL", false, 0,MINUS_ONE, true), + HOWTO(R_390_64, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_64", false, 0,MINUS_ONE, false), + HOWTO(R_390_PC64, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC64", false, 0,MINUS_ONE, true), + HOWTO(R_390_GOT64, 0, 4, 64, false, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT64", false, 0,MINUS_ONE, false), + HOWTO(R_390_PLT64, 0, 4, 64, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT64", false, 0,MINUS_ONE, true), + HOWTO(R_390_GOTENT, 1, 2, 32, true, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTENT", false, 0,MINUS_ONE, true), +}; + +/* GNU extension to record C++ vtable hierarchy. */ +static reloc_howto_type elf64_s390_vtinherit_howto = + HOWTO (R_390_GNU_VTINHERIT, 0,4,0,false,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", false,0, 0, false); +static reloc_howto_type elf64_s390_vtentry_howto = + HOWTO (R_390_GNU_VTENTRY, 0,4,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", false,0,0, false); + +static reloc_howto_type * +elf_s390_reloc_type_lookup (abfd, code) + bfd *abfd ATTRIBUTE_UNUSED; + bfd_reloc_code_real_type code; +{ + switch (code) { + case BFD_RELOC_NONE: + return &elf_howto_table[(int) R_390_NONE]; + case BFD_RELOC_8: + return &elf_howto_table[(int) R_390_8]; + case BFD_RELOC_390_12: + return &elf_howto_table[(int) R_390_12]; + case BFD_RELOC_16: + return &elf_howto_table[(int) R_390_16]; + case BFD_RELOC_32: + return &elf_howto_table[(int) R_390_32]; + case BFD_RELOC_CTOR: + return &elf_howto_table[(int) R_390_32]; + case BFD_RELOC_32_PCREL: + return &elf_howto_table[(int) R_390_PC32]; + case BFD_RELOC_390_GOT12: + return &elf_howto_table[(int) R_390_GOT12]; + case BFD_RELOC_32_GOT_PCREL: + return &elf_howto_table[(int) R_390_GOT32]; + case BFD_RELOC_390_PLT32: + return &elf_howto_table[(int) R_390_PLT32]; + case BFD_RELOC_390_COPY: + return &elf_howto_table[(int) R_390_COPY]; + case BFD_RELOC_390_GLOB_DAT: + return &elf_howto_table[(int) R_390_GLOB_DAT]; + case BFD_RELOC_390_JMP_SLOT: + return &elf_howto_table[(int) R_390_JMP_SLOT]; + case BFD_RELOC_390_RELATIVE: + return &elf_howto_table[(int) R_390_RELATIVE]; + case BFD_RELOC_32_GOTOFF: + return &elf_howto_table[(int) R_390_GOTOFF]; + case BFD_RELOC_390_GOTPC: + return &elf_howto_table[(int) R_390_GOTPC]; + case BFD_RELOC_390_GOT16: + return &elf_howto_table[(int) R_390_GOT16]; + case BFD_RELOC_16_PCREL: + return &elf_howto_table[(int) R_390_PC16]; + case BFD_RELOC_390_PC16DBL: + return &elf_howto_table[(int) R_390_PC16DBL]; + case BFD_RELOC_390_PLT16DBL: + return &elf_howto_table[(int) R_390_PLT16DBL]; + case BFD_RELOC_VTABLE_INHERIT: + return &elf64_s390_vtinherit_howto; + case BFD_RELOC_VTABLE_ENTRY: + return &elf64_s390_vtentry_howto; + case BFD_RELOC_390_PC32DBL: + return &elf_howto_table[(int) R_390_PC32DBL]; + case BFD_RELOC_390_PLT32DBL: + return &elf_howto_table[(int) R_390_PLT32DBL]; + case BFD_RELOC_390_GOTPCDBL: + return &elf_howto_table[(int) R_390_GOTPCDBL]; + case BFD_RELOC_64: + return &elf_howto_table[(int) R_390_64]; + case BFD_RELOC_64_PCREL: + return &elf_howto_table[(int) R_390_PC64]; + case BFD_RELOC_390_GOT64: + return &elf_howto_table[(int) R_390_GOT64]; + case BFD_RELOC_390_PLT64: + return &elf_howto_table[(int) R_390_PLT64]; + case BFD_RELOC_390_GOTENT: + return &elf_howto_table[(int) R_390_GOTENT]; + default: + break; + } + return 0; +} + +/* We need to use ELF64_R_TYPE so we have our own copy of this function, + and elf64-s390.c has its own copy. */ + +static void +elf_s390_info_to_howto (abfd, cache_ptr, dst) + bfd *abfd ATTRIBUTE_UNUSED; + arelent *cache_ptr; + Elf_Internal_Rela *dst; +{ + switch (ELF64_R_TYPE(dst->r_info)) + { + case R_390_GNU_VTINHERIT: + cache_ptr->howto = &elf64_s390_vtinherit_howto; + break; + + case R_390_GNU_VTENTRY: + cache_ptr->howto = &elf64_s390_vtentry_howto; + break; + + default: + BFD_ASSERT (ELF64_R_TYPE(dst->r_info) < (unsigned int) R_390_max); + cache_ptr->howto = &elf_howto_table[ELF64_R_TYPE(dst->r_info)]; + } +} + +static boolean +elf_s390_is_local_label_name (abfd, name) + bfd *abfd; + const char *name; +{ + if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L')) + return true; + + return _bfd_elf_is_local_label_name (abfd, name); +} + +/* Functions for the 390 ELF linker. */ + +/* The name of the dynamic interpreter. This is put in the .interp + section. */ + +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" + +/* The nop opcode we use. */ + +#define s390_NOP 0x07070707 + + +/* The size in bytes of the first entry in the procedure linkage table. */ +#define PLT_FIRST_ENTRY_SIZE 32 +/* The size in bytes of an entry in the procedure linkage table. */ +#define PLT_ENTRY_SIZE 32 + +#define GOT_ENTRY_SIZE 8 + +/* The first three entries in a procedure linkage table are reserved, + and the initial contents are unimportant (we zero them out). + Subsequent entries look like this. See the SVR4 ABI 386 + supplement to see how this works. */ + +/* For the s390, simple addr offset can only be 0 - 4096. + To use the full 16777216 TB address space, several instructions + are needed to load an address in a register and execute + a branch( or just saving the address) + + Furthermore, only r 0 and 1 are free to use!!! */ + +/* The first 3 words in the GOT are then reserved. + Word 0 is the address of the dynamic table. + Word 1 is a pointer to a structure describing the object + Word 2 is used to point to the loader entry address. + + The code for PLT entries looks like this: + + The GOT holds the address in the PLT to be executed. + The loader then gets: + 24(15) = Pointer to the structure describing the object. + 28(15) = Offset in symbol table + The loader must then find the module where the function is + and insert the address in the GOT. + + PLT1: LARL 1,@GOTENT # 6 bytes Load address of GOT entry in r1 + LG 1,0(1) # 6 bytes Load address from GOT in r1 + BCR 15,1 # 2 bytes Jump to address + RET1: BASR 1,0 # 2 bytes Return from GOT 1st time + LGF 1,12(1) # 6 bytes Load offset in symbl table in r1 + BRCL 15,-x # 6 bytes Jump to start of PLT + .long ? # 4 bytes offset into symbol table + + Total = 32 bytes per PLT entry + Fixup at offset 2: relative address to GOT entry + Fixup at offset 22: relative branch to PLT0 + Fixup at offset 28: 32 bit offset into symbol table + + A 32 bit offset into the symbol table is enough. It allows for symbol + tables up to a size of 2 gigabyte. A single dynamic object (the main + program, any shared library) is limited to 4GB in size and I want to see + the program that manages to have a symbol table of more than 2 GB with a + total size of at max 4 GB. */ + +#define PLT_ENTRY_WORD0 0xc0100000 +#define PLT_ENTRY_WORD1 0x0000e310 +#define PLT_ENTRY_WORD2 0x10000004 +#define PLT_ENTRY_WORD3 0x07f10d10 +#define PLT_ENTRY_WORD4 0xe310100c +#define PLT_ENTRY_WORD5 0x0014c0f4 +#define PLT_ENTRY_WORD6 0x00000000 +#define PLT_ENTRY_WORD7 0x00000000 + +/* The first PLT entry pushes the offset into the symbol table + from R1 onto the stack at 8(15) and the loader object info + at 12(15), loads the loader address in R1 and jumps to it. */ + +/* The first entry in the PLT: + + PLT0: + STG 1,56(15) # r1 contains the offset into the symbol table + LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table + MVC 48(8,15),8(1) # move loader ino (object struct address) to stack + LG 1,16(1) # get entry address of loader + BCR 15,1 # jump to loader + + Fixup at offset 8: relative address to start of GOT. */ + +#define PLT_FIRST_ENTRY_WORD0 0xe310f038 +#define PLT_FIRST_ENTRY_WORD1 0x0024c010 +#define PLT_FIRST_ENTRY_WORD2 0x00000000 +#define PLT_FIRST_ENTRY_WORD3 0xd207f030 +#define PLT_FIRST_ENTRY_WORD4 0x1008e310 +#define PLT_FIRST_ENTRY_WORD5 0x10100004 +#define PLT_FIRST_ENTRY_WORD6 0x07f10700 +#define PLT_FIRST_ENTRY_WORD7 0x07000700 + +/* The s390 linker needs to keep track of the number of relocs that it + decides to copy in check_relocs for each symbol. This is so that + it can discard PC relative relocs if it doesn't need them when + linking with -Bsymbolic. We store the information in a field + extending the regular ELF linker hash table. */ + +/* This structure keeps track of the number of PC relative relocs we + have copied for a given symbol. */ + +struct elf_s390_pcrel_relocs_copied +{ + /* Next section. */ + struct elf_s390_pcrel_relocs_copied *next; + /* A section in dynobj. */ + asection *section; + /* Number of relocs copied in this section. */ + bfd_size_type count; +}; + +/* s390 ELF linker hash entry. */ + +struct elf_s390_link_hash_entry +{ + struct elf_link_hash_entry root; + + /* Number of PC relative relocs copied for this symbol. */ + struct elf_s390_pcrel_relocs_copied *pcrel_relocs_copied; +}; + +/* s390 ELF linker hash table. */ + +struct elf_s390_link_hash_table +{ + struct elf_link_hash_table root; +}; + +/* Declare this now that the above structures are defined. */ + +static boolean elf_s390_discard_copies + PARAMS ((struct elf_s390_link_hash_entry *, PTR)); + +/* Traverse an s390 ELF linker hash table. */ + +#define elf_s390_link_hash_traverse(table, func, info) \ + (elf_link_hash_traverse \ + (&(table)->root, \ + (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ + (info))) + +/* Get the s390 ELF linker hash table from a link_info structure. */ + +#define elf_s390_hash_table(p) \ + ((struct elf_s390_link_hash_table *) ((p)->hash)) + +/* Create an entry in an s390 ELF linker hash table. */ + +static struct bfd_hash_entry * +elf_s390_link_hash_newfunc (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; +{ + struct elf_s390_link_hash_entry *ret = + (struct elf_s390_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == (struct elf_s390_link_hash_entry *) NULL) + ret = ((struct elf_s390_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf_s390_link_hash_entry))); + if (ret == (struct elf_s390_link_hash_entry *) NULL) + return (struct bfd_hash_entry *) ret; + + /* Call the allocation method of the superclass. */ + ret = ((struct elf_s390_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + if (ret != (struct elf_s390_link_hash_entry *) NULL) + { + ret->pcrel_relocs_copied = NULL; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Create an s390 ELF linker hash table. */ + +static struct bfd_link_hash_table * +elf_s390_link_hash_table_create (abfd) + bfd *abfd; +{ + struct elf_s390_link_hash_table *ret; + + ret = ((struct elf_s390_link_hash_table *) + bfd_alloc (abfd, sizeof (struct elf_s390_link_hash_table))); + if (ret == (struct elf_s390_link_hash_table *) NULL) + return NULL; + + if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, + elf_s390_link_hash_newfunc)) + { + bfd_release (abfd, ret); + return NULL; + } + + return &ret->root.root; +} + + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table or procedure linkage + table. */ + +static boolean +elf_s390_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *srelgot; + asection *sreloc; + + if (info->relocateable) + return true; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_offsets (abfd); + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + r_symndx = ELF64_R_SYM (rel->r_info); + + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + + /* Some relocs require a global offset table. */ + if (dynobj == NULL) + { + switch (ELF64_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOT64: + case R_390_GOTOFF: + case R_390_GOTPC: + case R_390_GOTPCDBL: + case R_390_GOTENT: + elf_hash_table (info)->dynobj = dynobj = abfd; + if (! _bfd_elf_create_got_section (dynobj, info)) + return false; + break; + + default: + break; + } + } + + + switch (ELF64_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOT64: + case R_390_GOTENT: + /* This symbol requires a global offset table entry. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + + if (srelgot == NULL + && (h != NULL || info->shared)) + { + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + if (srelgot == NULL) + { + srelgot = bfd_make_section (dynobj, ".rela.got"); + if (srelgot == NULL + || ! bfd_set_section_flags (dynobj, srelgot, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (dynobj, srelgot, 2)) + return false; + } + } + + if (h != NULL) + { + if (h->got.refcount == -1) + { + h->got.refcount = 1; + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf64_link_record_dynamic_symbol (info, h)) + return false; + } + + sgot->_raw_size += 8; + srelgot->_raw_size += sizeof (Elf64_External_Rela); + } + else + h->got.refcount += 1; + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts == NULL) + { + size_t size; + + size = symtab_hdr->sh_info * sizeof (bfd_vma); + local_got_refcounts = (bfd_signed_vma *) + bfd_alloc (abfd, size); + if (local_got_refcounts == NULL) + return false; + elf_local_got_refcounts (abfd) = local_got_refcounts; + memset (local_got_refcounts, -1, size); + } + if (local_got_refcounts[r_symndx] == -1) + { + local_got_refcounts[r_symndx] = 1; + + sgot->_raw_size += 8; + if (info->shared) + { + /* If we are generating a shared object, we need to + output a R_390_RELATIVE reloc so that the dynamic + linker can adjust this GOT entry. */ + srelgot->_raw_size += sizeof (Elf64_External_Rela); + } + } + else + local_got_refcounts[r_symndx] += 1; + + } + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + case R_390_PLT32DBL: + case R_390_PLT64: + /* This symbol requires a procedure linkage table entry. We + actually build the entry in adjust_dynamic_symbol, + because this might be a case of linking PIC code which is + never referenced by a dynamic object, in which case we + don't need to generate a procedure linkage table entry + after all. */ + + /* If this is a local symbol, we resolve it directly without + creating a procedure linkage table entry. */ + if (h == NULL) + continue; + + if (h->plt.refcount == -1) + { + h->plt.refcount = 1; + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + } + else + h->plt.refcount += 1; + break; + + case R_390_8: + case R_390_16: + case R_390_32: + case R_390_64: + case R_390_PC16: + case R_390_PC16DBL: + case R_390_PC32: + case R_390_PC32DBL: + case R_390_PC64: + if (h != NULL) + h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + + /* If we are creating a shared library, and this is a reloc + against a global symbol, or a non PC relative reloc + against a local symbol, then we need to copy the reloc + into the shared library. However, if we are linking with + -Bsymbolic, we do not need to copy a reloc against a + global symbol which is defined in an object we are + including in the link (i.e., DEF_REGULAR is set). At + this point we have not seen all the input files, so it is + possible that DEF_REGULAR is not set now but will be set + later (it is never cleared). We account for that + possibility below by storing information in the + pcrel_relocs_copied field of the hash table entry. */ + if (info->shared + && (sec->flags & SEC_ALLOC) != 0 + && (ELF64_R_TYPE (rel->r_info) == R_390_8 + || ELF64_R_TYPE (rel->r_info) == R_390_16 + || ELF64_R_TYPE (rel->r_info) == R_390_32 + || ELF64_R_TYPE (rel->r_info) == R_390_64 + || (h != NULL + && h->dynindx != -1 + && (! info->symbolic + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + { + /* When creating a shared object, we must copy these + reloc types into the output file. We create a reloc + section in dynobj and make room for this reloc. */ + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name)); + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (abfd, sec), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + if (sreloc == NULL) + { + flagword flags; + + sreloc = bfd_make_section (dynobj, name); + flags = (SEC_HAS_CONTENTS | SEC_READONLY + | SEC_IN_MEMORY | SEC_LINKER_CREATED); + if ((sec->flags & SEC_ALLOC) != 0) + flags |= SEC_ALLOC | SEC_LOAD; + if (sreloc == NULL + || ! bfd_set_section_flags (dynobj, sreloc, flags) + || ! bfd_set_section_alignment (dynobj, sreloc, 2)) + return false; + } + } + + sreloc->_raw_size += sizeof (Elf64_External_Rela); + + /* If we are linking with -Bsymbolic, and this is a + global symbol, we count the number of PC relative + relocations we have entered for this symbol, so that + we can discard them again if the symbol is later + defined by a regular object. Note that this function + is only called if we are using an elf64_s390 linker + hash table, which means that h is really a pointer to + an elf64_s390_link_hash_entry. */ + if (h != NULL + && (ELF64_R_TYPE (rel->r_info) == R_390_PC16 || + ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL || + ELF64_R_TYPE (rel->r_info) == R_390_PC32 || + ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL || + ELF64_R_TYPE (rel->r_info) == R_390_PC64)) + { + struct elf_s390_link_hash_entry *eh; + struct elf_s390_pcrel_relocs_copied *p; + + eh = (struct elf_s390_link_hash_entry *) h; + + for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) + if (p->section == sreloc) + break; + + if (p == NULL) + { + p = ((struct elf_s390_pcrel_relocs_copied *) + bfd_alloc (dynobj, sizeof *p)); + if (p == NULL) + return false; + p->next = eh->pcrel_relocs_copied; + eh->pcrel_relocs_copied = p; + p->section = sreloc; + p->count = 0; + } + + ++p->count; + } + } + + break; + + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_390_GNU_VTINHERIT: + if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return false; + break; + + /* This relocation describes which C++ vtable entries are actually + used. Record for later use during GC. */ + case R_390_GNU_VTENTRY: + if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return false; + break; + + default: + break; + } + } + + return true; +} + +/* Return the section that should be marked against GC for a given + relocation. */ + +static asection * +elf_s390_gc_mark_hook (abfd, info, rel, h, sym) + bfd *abfd; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + Elf_Internal_Rela *rel; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + if (h != NULL) + { + switch (ELF64_R_TYPE (rel->r_info)) + { + case R_390_GNU_VTINHERIT: + case R_390_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } + } + } + else + { + if (!(elf_bad_symtab (abfd) + && ELF_ST_BIND (sym->st_info) != STB_LOCAL) + && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) + && sym->st_shndx != SHN_COMMON)) + { + return bfd_section_from_elf_index (abfd, sym->st_shndx); + } + } + + return NULL; +} + +/* Update the got entry reference counts for the section being removed. */ + +static boolean +elf_s390_gc_sweep_hook (abfd, info, sec, relocs) + bfd *abfd ATTRIBUTE_UNUSED; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + asection *sec ATTRIBUTE_UNUSED; + const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel, *relend; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + bfd *dynobj; + asection *sgot; + asection *srelgot; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + dynobj = elf_hash_table (info)->dynobj; + if (dynobj == NULL) + return true; + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + switch (ELF64_R_TYPE (rel->r_info)) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOT64: + case R_390_GOTOFF: + case R_390_GOTPC: + case R_390_GOTPCDBL: + case R_390_GOTENT: + r_symndx = ELF64_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->got.refcount > 0) + { + h->got.refcount -= 1; + if (h->got.refcount == 0) + { + sgot->_raw_size -= 8; + srelgot->_raw_size -= sizeof (Elf64_External_Rela); + } + } + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + { + local_got_refcounts[r_symndx] -= 1; + if (local_got_refcounts[r_symndx] == 0) + { + sgot->_raw_size -= 8; + if (info->shared) + srelgot->_raw_size -= sizeof (Elf64_External_Rela); + } + } + } + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + case R_390_PLT32DBL: + case R_390_PLT64: + r_symndx = ELF64_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + break; + + default: + break; + } + + return true; +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static boolean +elf_s390_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + bfd *dynobj; + asection *s; + unsigned int power_of_two; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) + || h->weakdef != NULL + || ((h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_REF_REGULAR) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later + (although we could actually do it here). */ + if (h->type == STT_FUNC + || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) + { + if ((! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) + || (info->shared && h->plt.refcount <= 0)) + { + /* This case can occur if we saw a PLT32 reloc in an input + file, but the symbol was never referred to by a dynamic + object. In such a case, we don't actually need to build + a procedure linkage table, and we can just do a PC32 + reloc instead. */ + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + return true; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf64_link_record_dynamic_symbol (info, h)) + return false; + } + + s = bfd_get_section_by_name (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + + + /* The first entry in .plt is reserved. */ + if (s->_raw_size == 0) + s->_raw_size = PLT_FIRST_ENTRY_SIZE; + + /* If this symbol is not defined in a regular file, and we are + not generating a shared library, then set the symbol to this + location in the .plt. This is required to make function + pointers compare as equal between the normal executable and + the shared library. */ + if (! info->shared + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + } + + h->plt.offset = s->_raw_size; + + /* Make room for this entry. */ + s->_raw_size += PLT_ENTRY_SIZE; + + /* We also need to make an entry in the .got.plt section, which + will be placed in the .got section by the linker script. */ + s = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (s != NULL); + s->_raw_size += GOT_ENTRY_SIZE; + + /* We also need to make an entry in the .rela.plt section. */ + s = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (s != NULL); + s->_raw_size += sizeof (Elf64_External_Rela); + + return true; + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->weakdef != NULL) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || h->weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return true; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) + return true; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_section_by_name (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_390_COPY reloc to tell the dynamic linker + to copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rel.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->_raw_size += sizeof (Elf64_External_Rela); + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + } + + /* We need to figure out the alignment required for this symbol. I + have no idea how ELF linkers handle this. */ + power_of_two = bfd_log2 (h->size); + if (power_of_two > 3) + power_of_two = 3; + + /* Apply the required alignment. */ + s->_raw_size = BFD_ALIGN (s->_raw_size, + (bfd_size_type) (1 << power_of_two)); + if (power_of_two > bfd_get_section_alignment (dynobj, s)) + { + if (! bfd_set_section_alignment (dynobj, s, power_of_two)) + return false; + } + + /* Define the symbol as being at this point in the section. */ + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + + /* Increment the section size to make room for the symbol. */ + s->_raw_size += h->size; + + return true; +} + +/* Set the sizes of the dynamic sections. */ + +static boolean +elf_s390_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *s; + boolean reltext; + boolean relocs; + boolean plt; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_section_by_name (dynobj, ".rela.got"); + if (s != NULL) + s->_raw_size = 0; + } + + /* If this is a -Bsymbolic shared link, then we need to discard all + PC relative relocs against symbols defined in a regular object. + We allocated space for them in the check_relocs routine, but we + will not fill them in in the relocate_section routine. */ + if (info->shared) + elf_s390_link_hash_traverse (elf_s390_hash_table (info), + elf_s390_discard_copies, + (PTR) info); + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + plt = false; + reltext = false; + relocs = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + boolean strip; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + strip = false; + + if (strcmp (name, ".plt") == 0) + { + if (s->_raw_size == 0) + { + /* Strip this section if we don't need it; see the + comment below. */ + strip = true; + } + else + { + /* Remember whether there is a PLT. */ + plt = true; + } + } + else if (strncmp (name, ".rela", 5) == 0) + { + if (s->_raw_size == 0) + { + /* If we don't need this section, strip it from the + output file. This is to handle .rela.bss and + .rel.plt. We must create it in + create_dynamic_sections, because it must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + strip = true; + } + else + { + asection *target; + + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (strcmp (name, ".rela.plt") != 0) + { + const char *outname; + + relocs = true; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL + entry. The entries in the .rela.plt section + really apply to the .got section, which we + created ourselves and so know is not readonly. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 5); + if (target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + reltext = true; + } + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (strncmp (name, ".got", 4) != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (strip) + { + _bfd_strip_section_from_output (info, s); + continue; + } + + /* Allocate memory for the section contents. */ + s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); + if (s->contents == NULL && s->_raw_size != 0) + return false; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in elf_s390_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (plt) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) + return false; + } + + if (relocs) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) + || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, + sizeof (Elf64_External_Rela))) + return false; + } + + if (reltext) + { + if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + info->flags |= DF_TEXTREL; + } + } + + return true; +} + +/* This function is called via elf64_s390_link_hash_traverse if we are + creating a shared object with -Bsymbolic. It discards the space + allocated to copy PC relative relocs against symbols which are + defined in regular objects. We allocated space for them in the + check_relocs routine, but we won't fill them in in the + relocate_section routine. */ + +/*ARGSUSED*/ +static boolean +elf_s390_discard_copies (h, inf) + struct elf_s390_link_hash_entry *h; + PTR inf; +{ + struct elf_s390_pcrel_relocs_copied *s; + struct bfd_link_info *info = (struct bfd_link_info *) inf; + + /* If a symbol has been forced local or we have found a regular + definition for the symbolic link case, then we won't be needing + any relocs. */ + if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 + || info->symbolic)) + { + for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) + s->section->_raw_size -= s->count * sizeof (Elf64_External_Rela); + } + + return true; +} +/* Relocate a 390 ELF section. */ + +static boolean +elf_s390_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + struct bfd_link_info *info; + bfd *input_bfd; + asection *input_section; + bfd_byte *contents; + Elf_Internal_Rela *relocs; + Elf_Internal_Sym *local_syms; + asection **local_sections; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + asection *sgot; + asection *splt; + asection *sreloc; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + local_got_offsets = elf_local_got_offsets (input_bfd); + + sgot = NULL; + splt = NULL; + sreloc = NULL; + if (dynobj != NULL) + { + splt = bfd_get_section_by_name (dynobj, ".plt"); + sgot = bfd_get_section_by_name (dynobj, ".got"); + } + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++) + { + int r_type; + reloc_howto_type *howto; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sec; + bfd_vma relocation; + bfd_reloc_status_type r; + + r_type = ELF64_R_TYPE (rel->r_info); + if (r_type == R_390_GNU_VTINHERIT + || r_type == R_390_GNU_VTENTRY) + continue; + if (r_type < 0 || r_type >= (int) R_390_max) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + howto = elf_howto_table + r_type; + + r_symndx = ELF64_R_SYM (rel->r_info); + + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sec = local_sections[r_symndx]; + rel->r_addend += sec->output_offset + sym->st_value; + } + } + + continue; + } + + /* This is a final link. */ + h = NULL; + sym = NULL; + sec = NULL; + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = (sec->output_section->vma + + sec->output_offset + + sym->st_value); + } + else + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sec = h->root.u.def.section; + if ((r_type == R_390_GOTPC + || r_type == R_390_GOTPCDBL) + || ((r_type == R_390_PLT16DBL || + r_type == R_390_PLT32 || + r_type == R_390_PLT32DBL || + r_type == R_390_PLT64) + && splt != NULL + && h->plt.offset != (bfd_vma) -1) + || ((r_type == R_390_GOT12 || + r_type == R_390_GOT16 || + r_type == R_390_GOT32 || + r_type == R_390_GOT64 || + r_type == R_390_GOTENT) + && elf_hash_table (info)->dynamic_sections_created + && (! info->shared + || (! info->symbolic && h->dynindx != -1) + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)) + || (info->shared + && ((! info->symbolic && h->dynindx != -1) + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0) + && ( r_type == R_390_8 || + r_type == R_390_16 || + r_type == R_390_32 || + r_type == R_390_64 || + r_type == R_390_PC16 || + r_type == R_390_PC16DBL || + r_type == R_390_PC32 || + r_type == R_390_PC32DBL || + r_type == R_390_PC64) + && ((input_section->flags & SEC_ALLOC) != 0 + /* DWARF will emit R_386_32 relocations in its + sections against symbols defined externally + in shared libraries. We can't do anything + with them here. */ + || ((input_section->flags & SEC_DEBUGGING) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0)))) + { + /* In these cases, we don't need the relocation + value. We check specially because in some + obscure cases sec->output_section will be NULL. */ + relocation = 0; + } + else if (sec->output_section == NULL) + { + (*_bfd_error_handler) + (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), + bfd_get_filename (input_bfd), h->root.root.string, + bfd_get_section_name (input_bfd, input_section)); + relocation = 0; + } + else + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else if (h->root.type == bfd_link_hash_undefweak) + relocation = 0; + else if (info->shared && !info->symbolic + && !info->no_undefined + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) + relocation = 0; + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset, + (!info->shared || info->no_undefined + || ELF_ST_VISIBILITY (h->other))))) + return false; + relocation = 0; + } + } + + switch (r_type) + { + case R_390_GOT12: + case R_390_GOT16: + case R_390_GOT32: + case R_390_GOT64: + case R_390_GOTENT: + /* Relocation is to the entry for this symbol in the global + offset table. */ + BFD_ASSERT (sgot != NULL); + + if (h != NULL) + { + bfd_vma off; + + off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. We must initialize + this entry in the global offset table. Since the + offset must always be a multiple of 2, we use the + least significant bit to record whether we have + initialized it already. + + When doing a dynamic link, we create a .rel.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_64 (output_bfd, relocation, + sgot->contents + off); + h->got.offset |= 1; + } + } + relocation = sgot->output_offset + off; + } + else + { + bfd_vma off; + + BFD_ASSERT (local_got_offsets != NULL + && local_got_offsets[r_symndx] != (bfd_vma) -1); + + off = local_got_offsets[r_symndx]; + + /* The offset must always be a multiple of 8. We use + the least significant bit to record whether we have + already generated the necessary reloc. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_64 (output_bfd, relocation, sgot->contents + off); + + if (info->shared) + { + asection *srelgot; + Elf_Internal_Rela outrel; + + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); + outrel.r_addend = relocation; + bfd_elf64_swap_reloca_out (output_bfd, &outrel, + (((Elf64_External_Rela *) + srelgot->contents) + + srelgot->reloc_count)); + ++srelgot->reloc_count; + } + + local_got_offsets[r_symndx] |= 1; + } + + relocation = sgot->output_offset + off; + } + + /* + * For @GOTENT the relocation is against the offset between + * the instruction and the symbols entry in the GOT and not + * between the start of the GOT and the symbols entry. We + * add the vma of the GOT to get the correct value. + */ + if (r_type == R_390_GOTENT) + relocation += sgot->output_section->vma; + + break; + + case R_390_GOTOFF: + /* Relocation is relative to the start of the global offset + table. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + /* Note that sgot->output_offset is not involved in this + calculation. We always want the start of .got. If we + defined _GLOBAL_OFFSET_TABLE in a different way, as is + permitted by the ABI, we might have to change this + calculation. */ + relocation -= sgot->output_section->vma; + + break; + + case R_390_GOTPC: + case R_390_GOTPCDBL: + /* Use global offset table as symbol value. */ + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + relocation = sgot->output_section->vma; + + break; + + case R_390_PLT16DBL: + case R_390_PLT32: + case R_390_PLT32DBL: + case R_390_PLT64: + /* Relocation is to the entry for this symbol in the + procedure linkage table. */ + + /* Resolve a PLT32 reloc against a local symbol directly, + without using the procedure linkage table. */ + if (h == NULL) + break; + + if (h->plt.offset == (bfd_vma) -1 || splt == NULL) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + break; + } + + relocation = (splt->output_section->vma + + splt->output_offset + + h->plt.offset); + + break; + + case R_390_8: + case R_390_16: + case R_390_32: + case R_390_64: + case R_390_PC16: + case R_390_PC16DBL: + case R_390_PC32: + case R_390_PC32DBL: + case R_390_PC64: + if (info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && (r_type == R_390_8 + || r_type == R_390_16 + || r_type == R_390_32 + || r_type == R_390_64 + || (h != NULL + && h->dynindx != -1 + && (! info->symbolic + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + { + Elf_Internal_Rela outrel; + boolean skip, relocate; + + /* When generating a shared object, these relocations + are copied into the output file to be resolved at run + time. */ + + if (sreloc == NULL) + { + const char *name; + + name = (bfd_elf_string_from_elf_section + (input_bfd, + elf_elfheader (input_bfd)->e_shstrndx, + elf_section_data (input_section)->rel_hdr.sh_name)); + if (name == NULL) + return false; + + BFD_ASSERT (strncmp (name, ".rela", 5) == 0 + && strcmp (bfd_get_section_name (input_bfd, + input_section), + name + 5) == 0); + + sreloc = bfd_get_section_by_name (dynobj, name); + BFD_ASSERT (sreloc != NULL); + } + + skip = false; + + if (elf_section_data (input_section)->stab_info == NULL) + outrel.r_offset = rel->r_offset; + else + { + bfd_vma off; + + off = (_bfd_stab_section_offset + (output_bfd, &elf_hash_table (info)->stab_info, + input_section, + &elf_section_data (input_section)->stab_info, + rel->r_offset)); + if (off == (bfd_vma) -1) + skip = true; + outrel.r_offset = off; + } + + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + if (skip) + { + memset (&outrel, 0, sizeof outrel); + relocate = false; + } + else if (r_type == R_390_PC16 || + r_type == R_390_PC16DBL || + r_type == R_390_PC32 || + r_type == R_390_PC32DBL || + r_type == R_390_PC64) + { + BFD_ASSERT (h != NULL && h->dynindx != -1); + relocate = false; + outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + /* h->dynindx may be -1 if this symbol was marked to + become local. */ + if (h == NULL + || ((info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) != 0)) + { + relocate = true; + outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + BFD_ASSERT (h->dynindx != -1); + relocate = false; + outrel.r_info = ELF64_R_INFO (h->dynindx, R_390_64); + outrel.r_addend = relocation + rel->r_addend; + } + } + + bfd_elf64_swap_reloca_out (output_bfd, &outrel, + (((Elf64_External_Rela *) + sreloc->contents) + + sreloc->reloc_count)); + ++sreloc->reloc_count; + + /* If this reloc is against an external symbol, we do + not want to fiddle with the addend. Otherwise, we + need to include the symbol value so that it becomes + an addend for the dynamic reloc. */ + if (! relocate) + continue; + } + + break; + + default: + break; + } + + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + + if (r != bfd_reloc_ok) + { + switch (r) + { + default: + case bfd_reloc_outofrange: + abort (); + case bfd_reloc_overflow: + { + const char *name; + + if (h != NULL) + name = h->root.root.string; + else + { + name = bfd_elf_string_from_elf_section (input_bfd, + symtab_hdr->sh_link, + sym->st_name); + if (name == NULL) + return false; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + if (! ((*info->callbacks->reloc_overflow) + (info, name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; + } + break; + } + } + } + + return true; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static boolean +elf_s390_finish_dynamic_symbol (output_bfd, info, h, sym) + bfd *output_bfd; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + bfd *dynobj; + + dynobj = elf_hash_table (info)->dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + asection *splt; + asection *srela; + Elf_Internal_Rela rela; + bfd_vma got_offset; + bfd_vma plt_index; + asection *sgot; + + /* This symbol has an entry in the procedure linkage table. Set + it up. */ + + BFD_ASSERT (h->dynindx != -1); + + splt = bfd_get_section_by_name (dynobj, ".plt"); + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + srela = bfd_get_section_by_name (dynobj, ".rela.plt"); + BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); + + /* Calc. index no. + Current offset - size first entry / entry size. */ + plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE; + + /* Offset in GOT is PLT index plus GOT headers(3) times 8, + addr & GOT addr. */ + got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; + + /* Fill in the blueprint of a PLT. */ + bfd_put_32 (output_bfd, PLT_ENTRY_WORD0, + splt->contents + h->plt.offset); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, + splt->contents + h->plt.offset + 4); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, + splt->contents + h->plt.offset + 8); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD3, + splt->contents + h->plt.offset + 12); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD4, + splt->contents + h->plt.offset + 16); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD5, + splt->contents + h->plt.offset + 20); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD6, + splt->contents + h->plt.offset + 24); + bfd_put_32 (output_bfd, PLT_ENTRY_WORD7, + splt->contents + h->plt.offset + 28); + /* Fixup the relative address to the GOT entry */ + bfd_put_32 (output_bfd, + (sgot->output_section->vma + sgot->output_offset + got_offset + - (splt->output_section->vma + h->plt.offset))/2, + splt->contents + h->plt.offset + 2); + /* Fixup the relative branch to PLT 0 */ + bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE + + (PLT_ENTRY_SIZE * plt_index) + 22)/2, + splt->contents + h->plt.offset + 24); + /* Fixup offset into symbol table */ + bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela), + splt->contents + h->plt.offset + 28); + + /* Fill in the entry in the .rela.plt section. */ + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + got_offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT); + rela.r_addend = 0; + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) srela->contents + + plt_index )); + + /* Fill in the entry in the global offset table. + Points to instruction after GOT offset. */ + bfd_put_64 (output_bfd, + (splt->output_section->vma + + splt->output_offset + + h->plt.offset + + 14), + sgot->contents + got_offset); + + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + } + } + + if (h->got.offset != (bfd_vma) -1) + { + asection *sgot; + asection *srela; + Elf_Internal_Rela rela; + + /* This symbol has an entry in the global offset table. Set it + up. */ + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srela = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srela != NULL); + + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset &~ 1)); + + /* If this is a static link, or it is a -Bsymbolic link and the + symbol is defined locally or was forced to be local because + of a version file, we just want to emit a RELATIVE reloc. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE); + rela.r_addend = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + } + else + { + BFD_ASSERT((h->got.offset & 1) == 0); + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT); + rela.r_addend = 0; + } + + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) srela->contents + + srela->reloc_count)); + ++srela->reloc_count; + } + + if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) + { + asection *s; + Elf_Internal_Rela rela; + + /* This symbols needs a copy reloc. Set it up. */ + + BFD_ASSERT (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)); + + + s = bfd_get_section_by_name (h->root.u.def.section->owner, + ".rela.bss"); + BFD_ASSERT (s != NULL); + + rela.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY); + rela.r_addend = 0; + bfd_elf64_swap_reloca_out (output_bfd, &rela, + ((Elf64_External_Rela *) s->contents + + s->reloc_count)); + ++s->reloc_count; + } + + /* Mark some specially defined symbols as absolute. */ + if (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + + return true; +} + +/* Finish up the dynamic sections. */ + +static boolean +elf_s390_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *sdyn; + asection *sgot; + + dynobj = elf_hash_table (info)->dynobj; + + sgot = bfd_get_section_by_name (dynobj, ".got.plt"); + BFD_ASSERT (sgot != NULL); + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + asection *splt; + Elf64_External_Dyn *dyncon, *dynconend; + + BFD_ASSERT (sdyn != NULL); + + dyncon = (Elf64_External_Dyn *) sdyn->contents; + dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char *name; + asection *s; + + bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_PLTGOT: + name = ".got"; + goto get_vma; + case DT_JMPREL: + name = ".rela.plt"; + get_vma: + s = bfd_get_section_by_name(output_bfd, name); + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma; + bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTRELSZ: + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + BFD_ASSERT (s != NULL); + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size; + else + dyn.d_un.d_val = s->_raw_size; + bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_RELASZ: + /* The procedure linkage table relocs (DT_JMPREL) should + not be included in the overall relocs (DT_RELA). + Therefore, we override the DT_RELASZ entry here to + make it not include the JMPREL relocs. Since the + linker script arranges for .rela.plt to follow all + other relocation sections, we don't have to worry + about changing the DT_RELA entry. */ + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + if (s != NULL) + { + if (s->_cooked_size != 0) + dyn.d_un.d_val -= s->_cooked_size; + else + dyn.d_un.d_val -= s->_raw_size; + } + bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + } + } + + /* Fill in the special first entry in the procedure linkage table. */ + splt = bfd_get_section_by_name (dynobj, ".plt"); + if (splt && splt->_raw_size > 0) + { + /* fill in blueprint for plt 0 entry */ + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD0, + splt->contents ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD1, + splt->contents +4 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD3, + splt->contents +12 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD4, + splt->contents +16 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD5, + splt->contents +20 ); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD6, + splt->contents + 24); + bfd_put_32 (output_bfd, PLT_FIRST_ENTRY_WORD7, + splt->contents + 28 ); + /* Fixup relative address to start of GOT */ + bfd_put_32 (output_bfd, + (sgot->output_section->vma + sgot->output_offset + - splt->output_section->vma - 6)/2, + splt->contents + 8); + } + + elf_section_data (splt->output_section)->this_hdr.sh_entsize = + PLT_ENTRY_SIZE; + } + + /* Set the first entry in the global offset table to the address of + the dynamic section. */ + if (sgot->_raw_size > 0) + { + if (sdyn == NULL) + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); + else + bfd_put_64 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + sgot->contents); + + /* One entry for shared object struct ptr. */ + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 8); + /* One entry for _dl_runtime_resolve. */ + bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + 12); + } + + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; + + return true; +} + +static boolean +elf_s390_object_p (abfd) + bfd *abfd; +{ + return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_esame); +} + +/* + * Why was the hash table entry size definition changed from + * ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and + * this is the only reason for the s390_elf64_size_info structure. + */ + +const struct elf_size_info s390_elf64_size_info = +{ + sizeof (Elf64_External_Ehdr), + sizeof (Elf64_External_Phdr), + sizeof (Elf64_External_Shdr), + sizeof (Elf64_External_Rel), + sizeof (Elf64_External_Rela), + sizeof (Elf64_External_Sym), + sizeof (Elf64_External_Dyn), + sizeof (Elf_External_Note), + 8, /* hash-table entry size */ + 1, /* internal relocations per external relocations */ + 64, /* arch_size */ + 8, /* file_align */ + ELFCLASS64, EV_CURRENT, + bfd_elf64_write_out_phdrs, + bfd_elf64_write_shdrs_and_ehdr, + bfd_elf64_write_relocs, + bfd_elf64_swap_symbol_out, + bfd_elf64_slurp_reloc_table, + bfd_elf64_slurp_symbol_table, + bfd_elf64_swap_dyn_in, + bfd_elf64_swap_dyn_out, + NULL, + NULL, + NULL, + NULL +}; + +#define TARGET_BIG_SYM bfd_elf64_s390_vec +#define TARGET_BIG_NAME "elf64-s390" +#define ELF_ARCH bfd_arch_s390 +#define ELF_MACHINE_CODE EM_S390 +#define ELF_MACHINE_ALT1 EM_S390_OLD +#define ELF_MAXPAGESIZE 0x1000 + +#define elf_backend_size_info s390_elf64_size_info + +#define elf_backend_can_gc_sections 1 +#define elf_backend_want_got_plt 1 +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 24 +#define elf_backend_plt_header_size PLT_ENTRY_SIZE + +#define elf_info_to_howto elf_s390_info_to_howto + +#define bfd_elf64_bfd_final_link _bfd_elf64_gc_common_final_link +#define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name +#define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create +#define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup + +#define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol +#define elf_backend_check_relocs elf_s390_check_relocs +#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections +#define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections +#define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol +#define elf_backend_gc_mark_hook elf_s390_gc_mark_hook +#define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook +#define elf_backend_relocate_section elf_s390_relocate_section +#define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections + +#define elf_backend_object_p elf_s390_object_p + +#include "elf64-target.h" diff --git a/bfd/libbfd.h b/bfd/libbfd.h index 68f9316..7fee079 100644 --- a/bfd/libbfd.h +++ b/bfd/libbfd.h @@ -910,6 +910,23 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@", "BFD_RELOC_AVR_HI8_LDI_PM_NEG", "BFD_RELOC_AVR_HH8_LDI_PM_NEG", "BFD_RELOC_AVR_CALL", + "BFD_RELOC_390_12", + "BFD_RELOC_390_GOT12", + "BFD_RELOC_390_PLT32", + "BFD_RELOC_390_COPY", + "BFD_RELOC_390_GLOB_DAT", + "BFD_RELOC_390_JMP_SLOT", + "BFD_RELOC_390_RELATIVE", + "BFD_RELOC_390_GOTPC", + "BFD_RELOC_390_GOT16", + "BFD_RELOC_390_PC16DBL", + "BFD_RELOC_390_PLT16DBL", + "BFD_RELOC_390_PC32DBL", + "BFD_RELOC_390_PLT32DBL", + "BFD_RELOC_390_GOTPCDBL", + "BFD_RELOC_390_GOT64", + "BFD_RELOC_390_PLT64", + "BFD_RELOC_390_GOTENT", "BFD_RELOC_VTABLE_INHERIT", "BFD_RELOC_VTABLE_ENTRY", "BFD_RELOC_IA64_IMM14", diff --git a/bfd/po/POTFILES.in b/bfd/po/POTFILES.in index f75b4ca..1ac5d8e 100644 --- a/bfd/po/POTFILES.in +++ b/bfd/po/POTFILES.in @@ -85,6 +85,7 @@ cpu-ns32k.c cpu-pj.c cpu-powerpc.c cpu-rs6000.c +cpu-s390.c cpu-sh.c cpu-sparc.c cpu-tic30.c @@ -127,6 +128,7 @@ elf32-mcore.c elf32-mips.c elf32-pj.c elf32-ppc.c +elf32-s390.c elf32-sh.c elf32-sh-lin.c elf32-sparc.c @@ -137,6 +139,7 @@ elf64-gen.c elf64-hppa.c elf64-hppa.h elf64-mips.c +elf64-s390.c elf64-sparc.c elf64-x86-64.c elfarm-nabi.c diff --git a/bfd/po/bfd.pot b/bfd/po/bfd.pot index 40cba07..38af0b5 100644 --- a/bfd/po/bfd.pot +++ b/bfd/po/bfd.pot @@ -6,7 +6,7 @@ msgid "" msgstr "" "Project-Id-Version: PACKAGE VERSION\n" -"POT-Creation-Date: 2001-02-07 15:02-0800\n" +"POT-Creation-Date: 2001-02-09 16:27-0800\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "Last-Translator: FULL NAME \n" "Language-Team: LANGUAGE \n" @@ -191,7 +191,7 @@ msgstr "" msgid "GP relative relocation used when GP not defined" msgstr "" -#: coff-alpha.c:1486 elf64-alpha.c:4037 +#: coff-alpha.c:1486 elf64-alpha.c:4044 msgid "using multiple gp values" msgstr "" @@ -375,7 +375,7 @@ msgstr "" msgid "uncertain calling convention for non-COFF symbol" msgstr "" -#: cofflink.c:526 elflink.h:1647 +#: cofflink.c:526 elflink.h:1651 #, c-format msgid "Warning: type of symbol `%s' changed from %d to %d in %s" msgstr "" @@ -549,8 +549,9 @@ msgstr "" msgid "%s: Warning: Thumb BLX instruction targets thumb function '%s'." msgstr "" -#: elf-hppa.h:1369 elf-hppa.h:1402 elf32-arm.h:1853 elf32-i386.c:1439 -#: elf32-ppc.c:3092 elf32-sh.c:2996 elf64-x86-64.c:1182 +#: elf-hppa.h:1369 elf-hppa.h:1402 elf32-arm.h:1853 elf32-i386.c:1442 +#: elf32-ppc.c:3092 elf32-s390.c:1442 elf32-sh.c:2996 elf64-s390.c:1431 +#: elf64-x86-64.c:1182 #, c-format msgid "" "%s: warning: unresolvable relocation against symbol `%s' from %s section" @@ -799,12 +800,12 @@ msgstr "" msgid "%s: invalid relocation type %d" msgstr "" -#: elf32-i386.c:678 elf32-i386.c:1646 +#: elf32-i386.c:681 elf32-i386.c:1649 #, c-format msgid "%s(%s): bad relocation section name `%s'" msgstr "" -#: elf32-i386.c:683 elf32-i386.c:1651 +#: elf32-i386.c:686 elf32-i386.c:1654 #, c-format msgid "%s: bad relocation section name `%s'" msgstr "" @@ -889,7 +890,7 @@ msgstr "" msgid "%s: ABI mismatch: linking %s module with previous %s modules" msgstr "" -#: elf32-mips.c:2667 elf32-ppc.c:1477 elf64-sparc.c:2969 +#: elf32-mips.c:2667 elf32-ppc.c:1477 elf64-sparc.c:2991 #, c-format msgid "%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)" msgstr "" @@ -970,7 +971,7 @@ msgstr "" msgid "static procedure (no name)" msgstr "" -#: elf32-mips.c:5005 elf64-alpha.c:4410 +#: elf32-mips.c:5005 elf64-alpha.c:4417 #, c-format msgid "%s: illegal section name `%s'" msgstr "" @@ -1072,7 +1073,7 @@ msgstr "" msgid "%s: 0x%lx: fatal: reloc overflow while relaxing" msgstr "" -#: elf32-sparc.c:1512 elf64-sparc.c:2260 +#: elf32-sparc.c:1512 elf64-sparc.c:2264 #, c-format msgid "%s: probably compiled without -fPIC?" msgstr "" @@ -1154,11 +1155,11 @@ msgstr "" msgid "v850ea architecture" msgstr "" -#: elf64-alpha.c:978 +#: elf64-alpha.c:985 msgid "GPDISP relocation did not find ldah and lda instructions" msgstr "" -#: elf64-alpha.c:3047 +#: elf64-alpha.c:3054 #, c-format msgid "%s: .got subsegment exceeds 64K (size %d)" msgstr "" @@ -1168,32 +1169,32 @@ msgstr "" msgid "stub entry for %s cannot load .plt, dp offset = %ld" msgstr "" -#: elf64-sparc.c:1246 +#: elf64-sparc.c:1249 #, c-format msgid "%s: check_relocs: unhandled reloc type %d" msgstr "" -#: elf64-sparc.c:1283 +#: elf64-sparc.c:1286 msgid "%s: Only registers %%g[2367] can be declared using STT_REGISTER" msgstr "" -#: elf64-sparc.c:1303 +#: elf64-sparc.c:1306 msgid "" "Register %%g%d used incompatibly: previously declared in %s to %s, in %s " "redefined to %s" msgstr "" -#: elf64-sparc.c:1326 +#: elf64-sparc.c:1329 #, c-format msgid "Symbol `%s' has differing types: previously %s, REGISTER in %s" msgstr "" -#: elf64-sparc.c:1372 +#: elf64-sparc.c:1375 #, c-format msgid "Symbol `%s' has differing types: REGISTER in %s, %s in %s" msgstr "" -#: elf64-sparc.c:2950 +#: elf64-sparc.c:2972 #, c-format msgid "%s: linking UltraSPARC specific with HAL specific code" msgstr "" @@ -1269,24 +1270,24 @@ msgstr "" msgid "%s: warning: allocated section `%s' not in segment" msgstr "" -#: elf.c:3616 +#: elf.c:3619 #, c-format msgid "%s: symbol `%s' required but not present" msgstr "" -#: elf.c:3625 +#: elf.c:3628 #, c-format msgid "" "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = " "0x%.8lx%s\n" msgstr "" -#: elf.c:3866 +#: elf.c:3869 #, c-format msgid "%s: warning: Empty loadable segment detected\n" msgstr "" -#: elf.c:5213 +#: elf.c:5216 #, c-format msgid "%s: unsupported relocation type %s" msgstr "" @@ -1301,37 +1302,37 @@ msgstr "" msgid "%s: Section %s is already to large to put hole of %ld bytes in" msgstr "" -#: elflink.h:1464 +#: elflink.h:1468 #, c-format msgid "%s: %s: invalid version %u (max %d)" msgstr "" -#: elflink.h:1505 +#: elflink.h:1509 #, c-format msgid "%s: %s: invalid needed version %d" msgstr "" -#: elflink.h:1625 +#: elflink.h:1629 #, c-format msgid "Warning: size of symbol `%s' changed from %lu to %lu in %s" msgstr "" -#: elflink.h:1871 +#: elflink.h:1875 #, c-format msgid "%s: warning: unexpected redefinition of `%s'" msgstr "" -#: elflink.h:3656 +#: elflink.h:3660 #, c-format msgid "warning: type and size of dynamic symbol `%s' are not defined" msgstr "" -#: elflink.h:3928 +#: elflink.h:3932 #, c-format msgid "%s: undefined versioned symbol name %s" msgstr "" -#: elflink.h:5177 +#: elflink.h:5181 #, c-format msgid "%s: could not find output section %s for input section %s" msgstr "" diff --git a/bfd/reloc.c b/bfd/reloc.c index f37a6a9..9d45163 100644 --- a/bfd/reloc.c +++ b/bfd/reloc.c @@ -2736,6 +2736,75 @@ ENUMDOC into 22 bits. ENUM + BFD_RELOC_390_12 +ENUMDOC + Direct 12 bit. +ENUM + BFD_RELOC_390_GOT12 +ENUMDOC + 12 bit GOT offset. +ENUM + BFD_RELOC_390_PLT32 +ENUMDOC + 32 bit PC relative PLT address. +ENUM + BFD_RELOC_390_COPY +ENUMDOC + Copy symbol at runtime. +ENUM + BFD_RELOC_390_GLOB_DAT +ENUMDOC + Create GOT entry. +ENUM + BFD_RELOC_390_JMP_SLOT +ENUMDOC + Create PLT entry. +ENUM + BFD_RELOC_390_RELATIVE +ENUMDOC + Adjust by program base. +ENUM + BFD_RELOC_390_GOTPC +ENUMDOC + 32 bit PC relative offset to GOT. +ENUM + BFD_RELOC_390_GOT16 +ENUMDOC + 16 bit GOT offset. +ENUM + BFD_RELOC_390_PC16DBL +ENUMDOC + PC relative 16 bit shifted by 1. +ENUM + BFD_RELOC_390_PLT16DBL +ENUMDOC + 16 bit PC rel. PLT shifted by 1. +ENUM + BFD_RELOC_390_PC32DBL +ENUMDOC + PC relative 32 bit shifted by 1. +ENUM + BFD_RELOC_390_PLT32DBL +ENUMDOC + 32 bit PC rel. PLT shifted by 1. +ENUM + BFD_RELOC_390_GOTPCDBL +ENUMDOC + 32 bit PC rel. GOT shifted by 1. +ENUM + BFD_RELOC_390_GOT64 +ENUMDOC + 64 bit GOT offset. +ENUM + BFD_RELOC_390_PLT64 +ENUMDOC + 64 bit PC relative PLT address. +ENUM + BFD_RELOC_390_GOTENT +ENUMDOC + 32 bit rel. offset to GOT entry. + +ENUM BFD_RELOC_VTABLE_INHERIT ENUMX BFD_RELOC_VTABLE_ENTRY diff --git a/bfd/targets.c b/bfd/targets.c index 0211ec8..70b262d 100644 --- a/bfd/targets.c +++ b/bfd/targets.c @@ -542,6 +542,7 @@ extern const bfd_target bfd_elf32_pj_vec; extern const bfd_target bfd_elf32_pjl_vec; extern const bfd_target bfd_elf32_powerpc_vec; extern const bfd_target bfd_elf32_powerpcle_vec; +extern const bfd_target bfd_elf32_s390_vec; extern const bfd_target bfd_elf32_sh_vec; extern const bfd_target bfd_elf32_shblin_vec; extern const bfd_target bfd_elf32_shl_vec; @@ -560,6 +561,7 @@ extern const bfd_target bfd_elf64_ia64_big_vec; extern const bfd_target bfd_elf64_ia64_little_vec; extern const bfd_target bfd_elf64_little_generic_vec; extern const bfd_target bfd_elf64_littlemips_vec; +extern const bfd_target bfd_elf64_s390_vec; extern const bfd_target bfd_elf64_sparc_vec; extern const bfd_target bfd_elf64_x86_64_vec; extern const bfd_target bfd_powerpc_pe_vec; @@ -925,7 +927,10 @@ static const bfd_target * const _bfd_target_vector[] = { &vms_vax_vec, &we32kcoff_vec, &z8kcoff_vec, - + &bfd_elf32_s390_vec, +#ifdef BFD64 + &bfd_elf64_s390_vec, +#endif #endif /* not SELECT_VECS */ /* Always support S-records, for convenience. */ -- cgit v1.1