From 6793974daae8ff3f8ad4e856a9f0e3bbe4fdf9a3 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Mon, 16 Apr 2018 15:21:56 +0930 Subject: Remove i370 support include/ * elf/i370.h: Delete. * opcode/i370.h: Delete. bfd/ * Makefile.am: Remove i370 support. * archures.c: Likewise. * config.bfd: Likewise. * configure.ac: Likewise. * targets.c: Likewise. * cpu-i370.c: Delete. * elf32-i370.c: Delete. * Makefile.in: Regenerate. * bfd-in2.h: Regenerate. * configure: Regenerate. * po/SRC-POTFILES.in: Regenerate. opcodes/ * Makefile.am: Remove i370 support. * configure.ac: Likewise. * disassemble.c: Likewise. * disassemble.h: Likewise. * i370-dis.c: Delete. * i370-opc.c: Delete. * Makefile.in: Regenerate. * configure: Regenerate. * po/POTFILES.in: Regenerate. binutils/ * readelf.c: Remove i370 support. * testsuite/binutils-all/objdump.exp: Likewise. gas/ * Makefile.am: Remove i370 support. * app.c: Likewise. * config/obj-elf.c: Likewise. * configure.tgt: Likewise. * doc/Makefile.am: Likewise. * doc/as.texinfo: Likewise. * testsuite/gas/all/gas.exp: Likewise. * testsuite/gas/elf/warn-2.s: Likewise. * testsuite/gas/lns/lns.exp: Likewise. * config/tc-i370.c: Delete. * config/tc-i370.h: Delete. * doc/c-i370.texi: Delete. * Makefile.in: Regenerate. * doc/Makefile.in: Regenerate. * po/POTFILES.in: Regenerate. ld/ * Makefile.am: Remove i370 support. * configure.tgt: Likewise. * testsuite/ld-elf/compressed1d.d: Likewise. * testsuite/ld-elf/group8a.d: Likewise. * testsuite/ld-elf/group8b.d: Likewise. * testsuite/ld-elf/group9a.d: Likewise. * testsuite/ld-elf/group9b.d: Likewise. * testsuite/ld-elf/merge.d: Likewise. * testsuite/ld-elf/pr12851.d: Likewise. * testsuite/ld-elf/pr12975.d: Likewise. * testsuite/ld-elf/pr13177.d: Likewise. * testsuite/ld-elf/pr13195.d: Likewise. * testsuite/ld-elf/pr17615.d: Likewise. * testsuite/ld-elf/pr21562a.d: Likewise. * testsuite/ld-elf/pr21562b.d: Likewise. * testsuite/ld-elf/pr21562c.d: Likewise. * testsuite/ld-elf/pr21562d.d: Likewise. * testsuite/ld-elf/pr21562i.d: Likewise. * testsuite/ld-elf/pr21562j.d: Likewise. * testsuite/ld-elf/pr21562k.d: Likewise. * testsuite/ld-elf/pr21562l.d: Likewise. * testsuite/ld-elf/pr21562m.d: Likewise. * testsuite/ld-elf/pr21562n.d: Likewise. * testsuite/ld-elf/pr22677.d: Likewise. * testsuite/lib/ld-lib.exp: Likewise. * emulparams/elf32i370.sh: Delete. * scripttempl/elfi370.sc: Delete. * Makefile.in: Regenerate. * po/BLD-POTFILES.in: Regenerate. --- bfd/elf32-i370.c | 1404 ------------------------------------------------------ 1 file changed, 1404 deletions(-) delete mode 100644 bfd/elf32-i370.c (limited to 'bfd/elf32-i370.c') diff --git a/bfd/elf32-i370.c b/bfd/elf32-i370.c deleted file mode 100644 index 2c6a30d..0000000 --- a/bfd/elf32-i370.c +++ /dev/null @@ -1,1404 +0,0 @@ -/* i370-specific support for 32-bit ELF - Copyright (C) 1994-2018 Free Software Foundation, Inc. - Written by Ian Lance Taylor, Cygnus Support. - Hacked by Linas Vepstas for i370 linas@linas.org - - 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 3 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., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -/* This file is based on a preliminary PowerPC ELF ABI. - But its been hacked on for the IBM 360/370 architectures. - Basically, the 31bit relocation works, and just about everything - else is a wild card. In particular, don't expect shared libs or - dynamic loading to work ... its never been tested. */ - -#include "sysdep.h" -#include "bfd.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/i370.h" - -static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ]; - -static reloc_howto_type i370_elf_howto_raw[] = -{ - /* This reloc does nothing. */ - HOWTO (R_I370_NONE, /* type */ - 0, /* rightshift */ - 3, /* 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_I370_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A standard 31 bit relocation. */ - HOWTO (R_I370_ADDR31, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 31, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR31", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x7fffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A standard 32 bit relocation. */ - HOWTO (R_I370_ADDR32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A standard 16 bit relocation. */ - HOWTO (R_I370_ADDR16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 31-bit PC relative. */ - HOWTO (R_I370_REL31, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 31, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL31", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x7fffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 32-bit PC relative. */ - HOWTO (R_I370_REL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A standard 12 bit relocation. */ - HOWTO (R_I370_ADDR12, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR12", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xfff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 12-bit PC relative. */ - HOWTO (R_I370_REL12, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL12", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xfff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A standard 8 bit relocation. */ - HOWTO (R_I370_ADDR8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 8-bit PC relative. */ - HOWTO (R_I370_REL8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* This is used only by the dynamic linker. The symbol should exist - both in the object being run and in some shared library. The - dynamic linker copies the data addressed by the symbol from the - shared library into the object, because the object being - run has to have the data at some particular address. */ - HOWTO (R_I370_COPY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_COPY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Used only by the dynamic linker. When the object is run, this - longword is set to the load address of the object, plus the - addend. */ - HOWTO (R_I370_RELATIVE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_RELATIVE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - -}; - -/* Initialize the i370_elf_howto_table, so that linear accesses can be done. */ - -static void -i370_elf_howto_init (void) -{ - unsigned int i, type; - - for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++) - { - type = i370_elf_howto_raw[i].type; - BFD_ASSERT (type < sizeof (i370_elf_howto_table) / sizeof (i370_elf_howto_table[0])); - i370_elf_howto_table[type] = &i370_elf_howto_raw[i]; - } -} - -static reloc_howto_type * -i370_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - enum i370_reloc_type i370_reloc = R_I370_NONE; - - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) - /* Initialize howto table if needed. */ - i370_elf_howto_init (); - - switch ((int) code) - { - default: - return NULL; - - case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; - case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; - case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break; - case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break; - case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break; - case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break; - } - - return i370_elf_howto_table[ (int)i370_reloc ]; -}; - -static reloc_howto_type * -i370_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - for (i = 0; - i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); - i++) - if (i370_elf_howto_raw[i].name != NULL - && strcasecmp (i370_elf_howto_raw[i].name, r_name) == 0) - return &i370_elf_howto_raw[i]; - - return NULL; -} - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ - -#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so" - -/* Set the howto pointer for an i370 ELF reloc. */ - -static bfd_boolean -i370_elf_info_to_howto (bfd *abfd, - arelent *cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned int r_type; - - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) - /* Initialize howto table. */ - i370_elf_howto_init (); - - r_type = ELF32_R_TYPE (dst->r_info); - if (r_type >= R_I370_max) - { - /* xgettext:c-format */ - _bfd_error_handler (_("%pB: unsupported relocation type %#x"), - abfd, r_type); - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - cache_ptr->howto = i370_elf_howto_table[r_type]; - return TRUE; -} - -/* Hack alert -- the following several routines look generic to me ... - why are we bothering with them ? */ -/* Function to set whether a module needs the -mrelocatable bit set. */ - -static bfd_boolean -i370_elf_set_private_flags (bfd *abfd, flagword flags) -{ - BFD_ASSERT (!elf_flags_init (abfd) - || elf_elfheader (abfd)->e_flags == flags); - - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -static bfd_boolean -i370_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) -{ - bfd *obfd = info->output_bfd; - flagword old_flags; - flagword new_flags; - - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - new_flags = elf_elfheader (ibfd)->e_flags; - old_flags = elf_elfheader (obfd)->e_flags; - if (!elf_flags_init (obfd)) /* First call, no flags set. */ - { - elf_flags_init (obfd) = TRUE; - elf_elfheader (obfd)->e_flags = new_flags; - } - - else if (new_flags == old_flags) /* Compatible flags are ok. */ - ; - - else /* Incompatible flags. */ - { - _bfd_error_handler - /* xgettext:c-format */ - (_("%pB: uses different e_flags (%#x) fields than previous modules (%#x)"), - ibfd, new_flags, old_flags); - - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - - return TRUE; -} - -/* Handle an i370 specific section when reading an object file. This - is called when elfcode.h finds a section with an unknown type. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_section_from_shdr (bfd *abfd, - Elf_Internal_Shdr *hdr, - const char *name, - int shindex) -{ - asection *newsect; - flagword flags; - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) - return FALSE; - - newsect = hdr->bfd_section; - flags = bfd_get_section_flags (abfd, newsect); - if (hdr->sh_type == SHT_ORDERED) - flags |= SEC_SORT_ENTRIES; - - bfd_set_section_flags (abfd, newsect, flags); - return TRUE; -} - -/* Set up any other section flags and such that may be necessary. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, - Elf_Internal_Shdr *shdr, - asection *asect) -{ - if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) - shdr->sh_flags |= SHF_EXCLUDE; - - if ((asect->flags & SEC_SORT_ENTRIES) != 0) - shdr->sh_type = SHT_ORDERED; - - return TRUE; -} - -/* We have to create .dynsbss and .rela.sbss here so that they get mapped - to output sections (just like _bfd_elf_create_dynamic_sections has - to create .dynbss and .rela.bss). */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) -{ - asection *s; - flagword flags; - - if (!_bfd_elf_create_dynamic_sections(abfd, info)) - return FALSE; - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - - s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss", - SEC_ALLOC | SEC_LINKER_CREATED); - if (s == NULL) - return FALSE; - - if (! bfd_link_pic (info)) - { - s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", - flags | SEC_READONLY); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, 2)) - return FALSE; - } - - /* XXX beats me, seem to need a rela.text ... */ - s = bfd_make_section_anyway_with_flags (abfd, ".rela.text", - flags | SEC_READONLY); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, 2)) - return FALSE; - 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. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_adjust_dynamic_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *h) -{ - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *s; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n", - h->root.root.string); -#endif - - /* Make sure we know what is going on here. */ - BFD_ASSERT (dynobj != NULL - && (h->needs_plt - || h->is_weakalias - || (h->def_dynamic - && h->ref_regular - && !h->def_regular))); - - s = bfd_get_linker_section (dynobj, ".rela.text"); - BFD_ASSERT (s != NULL); - s->size += sizeof (Elf32_External_Rela); - - /* 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->is_weakalias) - { - struct elf_link_hash_entry *def = weakdef (h); - BFD_ASSERT (def->root.type == bfd_link_hash_defined); - h->root.u.def.section = def->root.u.def.section; - h->root.u.def.value = def->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 (bfd_link_pic (info)) - 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. - - Of course, if the symbol is sufficiently small, we must instead - allocate it in .sbss. FIXME: It would be better to do this if and - only if there were actually SDAREL relocs for that symbol. */ - - if (h->size <= elf_gp_size (dynobj)) - s = bfd_get_linker_section (dynobj, ".dynsbss"); - else - s = bfd_get_linker_section (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_I370_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 - .rela.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) - { - asection *srel; - - if (h->size <= elf_gp_size (dynobj)) - srel = bfd_get_linker_section (dynobj, ".rela.sbss"); - else - srel = bfd_get_linker_section (dynobj, ".rela.bss"); - BFD_ASSERT (srel != NULL); - srel->size += sizeof (Elf32_External_Rela); - h->needs_copy = 1; - } - - return _bfd_elf_adjust_dynamic_copy (info, h, s); -} - -/* Increment the index of a dynamic symbol by a given amount. Called - via elf_link_hash_traverse. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_adjust_dynindx (struct elf_link_hash_entry *h, void * cparg) -{ - int *cp = (int *) cparg; - -#ifdef DEBUG - fprintf (stderr, - "i370_elf_adjust_dynindx called, h->dynindx = %ld, *cp = %d\n", - h->dynindx, *cp); -#endif - - if (h->dynindx != -1) - h->dynindx += *cp; - - return TRUE; -} - -/* Set the sizes of the dynamic sections. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_size_dynamic_sections (bfd *output_bfd, - struct bfd_link_info *info) -{ - bfd *dynobj; - asection *s; - bfd_boolean plt; - bfd_boolean relocs; - bfd_boolean reltext; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); -#endif - - 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 (bfd_link_executable (info) && !info->nointerp) - { - s = bfd_get_linker_section (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->size = sizeof ELF_DYNAMIC_INTERPRETER; - s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; - } - } - else - { - /* We may have created entries in the .rela.got, .rela.sdata, and - .rela.sdata2 sections. However, if we are not creating the - dynamic sections, we will not actually use these entries. Reset - the size of .rela.got, et al, which will cause it to get - stripped from the output file below. */ - static char *rela_sections[] = { ".rela.got", ".rela.sdata", - ".rela.sdata2", ".rela.sbss", - NULL }; - char **p; - - for (p = rela_sections; *p != NULL; p++) - { - s = bfd_get_linker_section (dynobj, *p); - if (s != NULL) - s->size = 0; - } - } - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - plt = FALSE; - relocs = FALSE; - reltext = FALSE; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - - 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); - - if (strcmp (name, ".plt") == 0) - { - /* Remember whether there is a PLT. */ - plt = s->size != 0; - } - else if (CONST_STRNEQ (name, ".rela")) - { - if (s->size != 0) - { - asection *target; - const char *outname; - - /* Remember whether there are any relocation sections. */ - relocs = TRUE; - - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL entry. */ - 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 (strcmp (name, ".got") != 0 - && strcmp (name, ".sdata") != 0 - && strcmp (name, ".sdata2") != 0 - && strcmp (name, ".dynbss") != 0 - && strcmp (name, ".dynsbss") != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (s->size == 0) - { - /* If we don't need this section, strip it from the - output file. This is mostly to handle .rela.bss and - .rela.plt. We must create both sections in - create_dynamic_sections, because they 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. */ - s->flags |= SEC_EXCLUDE; - continue; - } - - if ((s->flags & SEC_HAS_CONTENTS) == 0) - continue; - - /* Allocate memory for the section contents. */ - s->contents = bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - return FALSE; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in i370_elf_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. */ -#define add_dynamic_entry(TAG, VAL) \ - _bfd_elf_add_dynamic_entry (info, TAG, VAL) - - if (!bfd_link_pic (info)) - { - if (!add_dynamic_entry (DT_DEBUG, 0)) - return FALSE; - } - - if (plt) - { - if (!add_dynamic_entry (DT_PLTGOT, 0) - || !add_dynamic_entry (DT_PLTRELSZ, 0) - || !add_dynamic_entry (DT_PLTREL, DT_RELA) - || !add_dynamic_entry (DT_JMPREL, 0)) - return FALSE; - } - - if (relocs) - { - if (!add_dynamic_entry (DT_RELA, 0) - || !add_dynamic_entry (DT_RELASZ, 0) - || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) - return FALSE; - } - - if (reltext) - { - if (!add_dynamic_entry (DT_TEXTREL, 0)) - return FALSE; - info->flags |= DF_TEXTREL; - } - } -#undef add_dynamic_entry - - /* If we are generating a shared library, we generate a section - symbol for each output section. These are local symbols, which - means that they must come first in the dynamic symbol table. - That means we must increment the dynamic symbol index of every - other dynamic symbol. - - FIXME: We assume that there will never be relocations to - locations in linker-created sections that do not have - externally-visible names. Instead, we should work out precisely - which sections relocations are targeted at. */ - if (bfd_link_pic (info)) - { - int c; - - for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) - { - if ((s->flags & SEC_LINKER_CREATED) != 0 - || (s->flags & SEC_ALLOC) == 0) - { - elf_section_data (s)->dynindx = -1; - continue; - } - - /* These symbols will have no names, so we don't need to - fiddle with dynstr_index. */ - - elf_section_data (s)->dynindx = c + 1; - - c++; - } - - elf_link_hash_traverse (elf_hash_table (info), - i370_elf_adjust_dynindx, & c); - elf_hash_table (info)->dynsymcount += c; - } - - return TRUE; -} - -/* Look through the relocs for a section during the first phase, and - allocate space in the global offset table or procedure linkage - table. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_check_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; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - asection *sreloc; - - if (bfd_link_relocatable (info)) - return TRUE; - -#ifdef DEBUG - _bfd_error_handler ("i370_elf_check_relocs called for section %pA in %pB", - sec, abfd); -#endif - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - - 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]; - 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 (bfd_link_pic (info)) - { -#ifdef DEBUG - fprintf (stderr, - "i370_elf_check_relocs needs to create relocation for %s\n", - (h && h->root.root.string) - ? h->root.root.string : ""); -#endif - if (sreloc == NULL) - { - sreloc = _bfd_elf_make_dynamic_reloc_section - (sec, dynobj, 2, abfd, /*rela?*/ TRUE); - - if (sreloc == NULL) - return FALSE; - } - - sreloc->size += sizeof (Elf32_External_Rela); - - /* FIXME: We should here do what the m68k and i386 - backends do: if the reloc is pc-relative, record it - in case it turns out that the reloc is unnecessary - because the symbol is forced local by versioning or - we are linking with -Bdynamic. Fortunately this - case is not frequent. */ - } - } - - return TRUE; -} - -/* Finish up the dynamic sections. */ -/* XXX hack alert bogus This routine is mostly all junk and almost - certainly does the wrong thing. Its here simply because it does - just enough to allow glibc-2.1 ld.so to compile & link. */ - -static bfd_boolean -i370_elf_finish_dynamic_sections (bfd *output_bfd, - struct bfd_link_info *info) -{ - asection *sdyn; - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *sgot = elf_hash_table (info)->sgot; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_finish_dynamic_sections called\n"); -#endif - - sdyn = bfd_get_linker_section (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - splt = elf_hash_table (info)->splt; - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - asection *s; - bfd_boolean size; - - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - case DT_PLTGOT: - s = elf_hash_table (info)->splt; - size = FALSE; - break; - case DT_PLTRELSZ: - s = elf_hash_table (info)->srelplt; - size = TRUE; - break; - case DT_JMPREL: - s = elf_hash_table (info)->srelplt; - size = FALSE; - break; - default: - continue; - } - - if (s == NULL) - dyn.d_un.d_val = 0; - else - { - if (!size) - dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; - else - dyn.d_un.d_val = s->size; - } - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - } - } - - if (sgot && sgot->size != 0) - { - unsigned char *contents = sgot->contents; - - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, contents); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - contents); - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - } - - if (bfd_link_pic (info)) - { - asection *sdynsym; - asection *s; - Elf_Internal_Sym sym; - int maxdindx = 0; - - /* Set up the section symbols for the output sections. */ - - sdynsym = bfd_get_linker_section (dynobj, ".dynsym"); - BFD_ASSERT (sdynsym != NULL); - - sym.st_size = 0; - sym.st_name = 0; - sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); - sym.st_other = 0; - sym.st_target_internal = 0; - - for (s = output_bfd->sections; s != NULL; s = s->next) - { - int indx, dindx; - Elf32_External_Sym *esym; - - sym.st_value = s->vma; - - indx = elf_section_data (s)->this_idx; - dindx = elf_section_data (s)->dynindx; - if (dindx != -1) - { - BFD_ASSERT(indx > 0); - BFD_ASSERT(dindx > 0); - - if (dindx > maxdindx) - maxdindx = dindx; - - sym.st_shndx = indx; - - esym = (Elf32_External_Sym *) sdynsym->contents + dindx; - bfd_elf32_swap_symbol_out (output_bfd, &sym, esym, NULL); - } - } - - /* Set the sh_info field of the output .dynsym section to the - index of the first global symbol. */ - elf_section_data (sdynsym->output_section)->this_hdr.sh_info = - maxdindx + 1; - } - - return TRUE; -} - -/* The RELOCATE_SECTION function is called by the ELF backend linker - to handle the relocations for a section. - - The relocs are always passed as Rela structures; if the section - actually uses Rel structures, the r_addend field will always be - zero. - - This function is responsible for adjust the section contents as - necessary, and (if using Rela relocs and generating a - relocatable output file) adjusting the reloc addend as - necessary. - - This function does not have to worry about setting the reloc - address or the reloc symbol index. - - LOCAL_SYMS is a pointer to the swapped in local symbols. - - LOCAL_SECTIONS is an array giving the section in the input file - corresponding to the st_shndx field of each local symbol. - - The global hash table entry for the global symbols can be found - via elf_sym_hashes (input_bfd). - - When generating relocatable output, this function must handle - STB_LOCAL/STT_SECTION symbols specially. The output symbol is - going to be the section symbol corresponding to the output - section, which means that the addend must be adjusted - accordingly. */ - -static bfd_boolean -i370_elf_relocate_section (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) -{ - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - Elf_Internal_Rela *rel = relocs; - Elf_Internal_Rela *relend = relocs + input_section->reloc_count; - asection *sreloc = NULL; - bfd_boolean ret = TRUE; - -#ifdef DEBUG - _bfd_error_handler ("i370_elf_relocate_section called for %pB section %pA, %u relocations%s", - input_bfd, input_section, - input_section->reloc_count, - (bfd_link_relocatable (info)) ? " (relocatable)" : ""); -#endif - - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) - /* Initialize howto table if needed. */ - i370_elf_howto_init (); - - for (; rel < relend; rel++) - { - enum i370_reloc_type r_type = (enum i370_reloc_type) ELF32_R_TYPE (rel->r_info); - bfd_vma offset = rel->r_offset; - bfd_vma addend = rel->r_addend; - bfd_reloc_status_type r = bfd_reloc_other; - Elf_Internal_Sym *sym = NULL; - asection *sec = NULL; - struct elf_link_hash_entry * h = NULL; - reloc_howto_type *howto; - unsigned long r_symndx; - bfd_vma relocation; - - /* Unknown relocation handling. */ - if ((unsigned) r_type >= (unsigned) R_I370_max - || !i370_elf_howto_table[(int)r_type]) - { - /* xgettext:c-format */ - _bfd_error_handler (_("%pB: unsupported relocation type %#x"), - input_bfd, (int) r_type); - - bfd_set_error (bfd_error_bad_value); - ret = FALSE; - continue; - } - - howto = i370_elf_howto_table[(int) r_type]; - r_symndx = ELF32_R_SYM (rel->r_info); - relocation = 0; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel); - addend = rel->r_addend; - } - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - - if (info->wrap_hash != NULL - && (input_section->flags & SEC_DEBUGGING) != 0) - h = ((struct elf_link_hash_entry *) - unwrap_hash_lookup (info, input_bfd, &h->root)); - - 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 (bfd_link_pic (info) - && ((! info->symbolic && h->dynindx != -1) - || !h->def_regular) - && (input_section->flags & SEC_ALLOC) != 0 - && (r_type == R_I370_ADDR31 - || r_type == R_I370_COPY - || r_type == R_I370_ADDR16 - || r_type == R_I370_RELATIVE)) - /* In these cases, we don't need the relocation - value. We check specially because in some - obscure cases sec->output_section will be NULL. */ - ; - else - relocation = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - else if (h->root.type == bfd_link_hash_undefweak) - ; - else if (info->unresolved_syms_in_objects == RM_IGNORE - && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - ; - else if (!bfd_link_relocatable (info)) - { - (*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset, - (info->unresolved_syms_in_objects == RM_GENERATE_ERROR - || ELF_ST_VISIBILITY (h->other))); - ret = FALSE; - continue; - } - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - if (bfd_link_relocatable (info)) - continue; - - switch ((int) r_type) - { - default: - _bfd_error_handler - (_("%pB: unsupported relocation type %#x"), - input_bfd, (int) r_type); - - bfd_set_error (bfd_error_bad_value); - ret = FALSE; - continue; - - case (int) R_I370_NONE: - continue; - - /* Relocations that may need to be propagated if this is a shared - object. */ - case (int) R_I370_REL31: - /* If these relocations are not to a named symbol, they can be - handled right here, no need to bother the dynamic linker. */ - if (h == NULL - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) - break; - /* Fall through. */ - - /* Relocations that always need to be propagated if this is a shared - object. */ - case (int) R_I370_ADDR31: - case (int) R_I370_ADDR16: - if (bfd_link_pic (info) - && r_symndx != STN_UNDEF) - { - Elf_Internal_Rela outrel; - bfd_byte *loc; - int skip; - -#ifdef DEBUG - fprintf (stderr, - "i370_elf_relocate_section needs to create relocation for %s\n", - (h && h->root.root.string) ? h->root.root.string : ""); -#endif - - /* When generating a shared object, these relocations - are copied into the output file to be resolved at run - time. */ - - if (sreloc == NULL) - { - sreloc = _bfd_elf_get_dynamic_reloc_section - (input_bfd, input_section, /*rela?*/ TRUE); - if (sreloc == NULL) - return FALSE; - } - - skip = 0; - - outrel.r_offset = - _bfd_elf_section_offset (output_bfd, info, input_section, - rel->r_offset); - if (outrel.r_offset == (bfd_vma) -1 - || outrel.r_offset == (bfd_vma) -2) - skip = (int) outrel.r_offset; - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - - if (skip) - memset (&outrel, 0, sizeof outrel); - /* h->dynindx may be -1 if this symbol was marked to - become local. */ - else if (h != NULL - && ((! info->symbolic && h->dynindx != -1) - || !h->def_regular)) - { - BFD_ASSERT (h->dynindx != -1); - outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); - outrel.r_addend = rel->r_addend; - } - else - { - if (r_type == R_I370_ADDR31) - { - outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE); - outrel.r_addend = relocation + rel->r_addend; - } - else - { - long indx; - - if (bfd_is_abs_section (sec)) - indx = 0; - else if (sec == NULL || sec->owner == NULL) - { - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - else - { - asection *osec; - - /* We are turning this relocation into one - against a section symbol. It would be - proper to subtract the symbol's value, - osec->vma, from the emitted reloc addend, - but ld.so expects buggy relocs. */ - osec = sec->output_section; - indx = elf_section_data (osec)->dynindx; - if (indx == 0) - { - struct elf_link_hash_table *htab; - htab = elf_hash_table (info); - osec = htab->text_index_section; - indx = elf_section_data (osec)->dynindx; - } - BFD_ASSERT (indx != 0); -#ifdef DEBUG - if (indx <= 0) - { - printf ("indx=%ld section=%s flags=%08x name=%s\n", - indx, osec->name, osec->flags, - h->root.root.string); - } -#endif - } - - outrel.r_info = ELF32_R_INFO (indx, r_type); - outrel.r_addend = relocation + rel->r_addend; - } - } - - loc = sreloc->contents; - loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); - - /* This reloc will be computed at runtime, so there's no - need to do anything now, unless this is a RELATIVE - reloc in an unallocated section. */ - if (skip == -1 - || (input_section->flags & SEC_ALLOC) != 0 - || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE) - continue; - } - break; - - case (int) R_I370_COPY: - case (int) R_I370_RELATIVE: - /* xgettext:c-format */ - _bfd_error_handler (_("%pB: %s unsupported"), - input_bfd, - i370_elf_howto_table[(int) r_type]->name); - bfd_set_error (bfd_error_invalid_operation); - ret = FALSE; - continue; - } - - r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, - offset, relocation, addend); - - if (r != bfd_reloc_ok) - { - ret = FALSE; - switch (r) - { - default: - break; - - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = NULL; - else - { - name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (name == NULL) - break; - - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - (*info->callbacks->reloc_overflow) (info, - (h ? &h->root : NULL), - name, - howto->name, - (bfd_vma) 0, - input_bfd, - input_section, - offset); - } - break; - } - } - } - -#ifdef DEBUG - fprintf (stderr, "\n"); -#endif - - return ret; -} - -#define TARGET_BIG_SYM i370_elf32_vec -#define TARGET_BIG_NAME "elf32-i370" -#define ELF_ARCH bfd_arch_i370 -#define ELF_MACHINE_CODE EM_S370 -#ifdef EM_I370_OLD -#define ELF_MACHINE_ALT1 EM_I370_OLD -#endif -#define ELF_MAXPAGESIZE 0x1000 -#define ELF_OSABI ELFOSABI_GNU - -#define elf_info_to_howto i370_elf_info_to_howto - -#define elf_backend_plt_not_loaded 1 -#define elf_backend_rela_normal 1 - -#define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup -#define bfd_elf32_bfd_reloc_name_lookup i370_elf_reloc_name_lookup -#define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags -#define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data -#define elf_backend_relocate_section i370_elf_relocate_section - -/* Dynamic loader support is mostly broken; just enough here to be able to - link glibc's ld.so without errors. */ -#define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections -#define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections -#define elf_backend_init_index_section _bfd_elf_init_1_index_section -#define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections -#define elf_backend_fake_sections i370_elf_fake_sections -#define elf_backend_section_from_shdr i370_elf_section_from_shdr -#define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol -#define elf_backend_check_relocs i370_elf_check_relocs - -static bfd_boolean -i370_noop (bfd * abfd ATTRIBUTE_UNUSED, ...) -{ - return TRUE; -} - -#define elf_backend_finish_dynamic_symbol \ - (bfd_boolean (*) \ - (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \ - Elf_Internal_Sym *)) i370_noop - -#include "elf32-target.h" -- cgit v1.1