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* aout-target.h (MY_zmagic_contiguous): Define as 0 if not already
defined. (MY(backend_data)): Use MY_zmagic_contiguous, not hardcoded 0. * i386linux.c (MY_zmagic_contiguous): Define.
This commit is contained in:
Ian Lance Taylor
parent
823609fe90
commit
a932d0ffb7
@ -1,5 +1,10 @@
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Mon Aug 15 12:16:56 1994 Ian Lance Taylor (ian@sanguine.cygnus.com)
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* aout-target.h (MY_zmagic_contiguous): Define as 0 if not already
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defined.
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(MY(backend_data)): Use MY_zmagic_contiguous, not hardcoded 0.
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* i386linux.c (MY_zmagic_contiguous): Define.
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* elfcode.h (bfd_section_from_shdr): If a SHT_SYMTAB section in a
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shared object has SHF_ALLOC set, create a BFD section for it.
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(elf_section_from_bfd_section): There may be a BFD section for a
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@ -27,11 +27,13 @@ extern CONST struct reloc_howto_struct * NAME(aout,reloc_type_lookup) ();
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/* Set parameters about this a.out file that are machine-dependent.
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This routine is called from some_aout_object_p just before it returns. */
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#ifndef MY_callback
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static bfd_target *
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static const bfd_target *
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MY(callback) (abfd)
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bfd *abfd;
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{
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struct internal_exec *execp = exec_hdr (abfd);
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unsigned int arch_align_power;
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unsigned long arch_align;
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/* Calculate the file positions of the parts of a newly read aout header */
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obj_textsec (abfd)->_raw_size = N_TXTSIZE(*execp);
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@ -63,11 +65,22 @@ MY(callback) (abfd)
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/* Now that we know the architecture, set the alignments of the
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sections. This is normally done by NAME(aout,new_section_hook),
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but when the initial sections were created the architecture had
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not yet been set. */
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obj_textsec (abfd)->alignment_power =
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obj_datasec (abfd)->alignment_power =
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obj_bsssec (abfd)->alignment_power =
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bfd_get_arch_info (abfd)->section_align_power;
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not yet been set. However, for backward compatibility, we don't
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set the alignment power any higher than as required by the size
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of the section. */
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arch_align_power = bfd_get_arch_info (abfd)->section_align_power;
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arch_align = 1 << arch_align_power;
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if ((BFD_ALIGN (obj_textsec (abfd)->_raw_size, arch_align)
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== obj_textsec (abfd)->_raw_size)
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&& (BFD_ALIGN (obj_datasec (abfd)->_raw_size, arch_align)
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== obj_datasec (abfd)->_raw_size)
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&& (BFD_ALIGN (obj_bsssec (abfd)->_raw_size, arch_align)
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== obj_bsssec (abfd)->_raw_size))
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{
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obj_textsec (abfd)->alignment_power = arch_align_power;
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obj_datasec (abfd)->alignment_power = arch_align_power;
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obj_bsssec (abfd)->alignment_power = arch_align_power;
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}
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/* Don't set sizes now -- can't be sure until we know arch & mach.
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Sizes get set in set_sizes callback, later. */
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@ -88,13 +101,13 @@ MY(callback) (abfd)
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#ifndef MY_object_p
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/* Finish up the reading of an a.out file header */
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static bfd_target *
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static const bfd_target *
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MY(object_p) (abfd)
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bfd *abfd;
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{
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struct external_exec exec_bytes; /* Raw exec header from file */
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struct internal_exec exec; /* Cleaned-up exec header */
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bfd_target *target;
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const bfd_target *target;
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if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
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!= EXEC_BYTES_SIZE) {
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@ -115,6 +128,12 @@ MY(object_p) (abfd)
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#endif
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NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, &exec);
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#ifdef SWAP_MAGIC
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/* swap_exec_header_in read in a_info with the wrong byte order */
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exec.a_info = SWAP_MAGIC (exec_bytes.e_info);
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#endif /* SWAP_MAGIC */
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target = NAME(aout,some_aout_object_p) (abfd, &exec, MY(callback));
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#ifdef ENTRY_CAN_BE_ZERO
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@ -217,11 +236,19 @@ MY(set_sizes) (abfd)
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bfd *abfd;
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{
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adata(abfd).page_size = PAGE_SIZE;
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#ifdef SEGMENT_SIZE
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adata(abfd).segment_size = SEGMENT_SIZE;
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#else
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adata(abfd).segment_size = PAGE_SIZE;
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#endif
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#ifdef ZMAGIC_DISK_BLOCK_SIZE
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adata(abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE;
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#else
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adata(abfd).zmagic_disk_block_size = PAGE_SIZE;
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#endif
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adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
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return true;
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}
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@ -234,6 +261,9 @@ MY(set_sizes) (abfd)
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#ifndef MY_backend_data
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#ifndef MY_zmagic_contiguous
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#define MY_zmagic_contiguous 0
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#endif
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#ifndef MY_text_includes_header
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#define MY_text_includes_header 0
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#endif
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@ -257,7 +287,7 @@ MY(set_sizes) (abfd)
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#endif
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static CONST struct aout_backend_data MY(backend_data) = {
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0, /* zmagic contiguous */
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MY_zmagic_contiguous,
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MY_text_includes_header,
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MY_exec_hdr_flags,
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0, /* text vma? */
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@ -472,7 +502,7 @@ MY_bfd_final_link (abfd, info)
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#endif
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#ifndef MY_BFD_TARGET
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bfd_target MY(vec) =
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const bfd_target MY(vec) =
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{
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TARGETNAME, /* name */
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bfd_target_aout_flavour,
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@ -22,7 +22,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define SEGMENT_SIZE 4096
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#define TEXT_START_ADDR 0x0
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#define N_SHARED_LIB(x) 0
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#define ARCH 32
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#define BYTES_IN_WORD 4
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#include "bfd.h"
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@ -35,7 +34,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define DEFAULT_ARCH bfd_arch_i386
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#define MY(OP) CAT(i386linux_,OP)
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#define MY_text_includes_header 1
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#define TARGETNAME "a.out-i386-linux"
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/* We always generate QMAGIC files in preference to ZMAGIC files. It
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@ -343,7 +341,8 @@ linux_add_one_symbol (info, abfd, name, flags, section, value, string,
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if (! info->relocateable
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&& linux_hash_table (info)->dynobj == NULL
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&& strcmp (name, SHARABLE_CONFLICTS) == 0)
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&& strcmp (name, SHARABLE_CONFLICTS) == 0
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&& (flags & BSF_CONSTRUCTOR) != 0)
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{
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if (! linux_link_create_dynamic_sections (abfd, info))
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return false;
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@ -351,7 +350,7 @@ linux_add_one_symbol (info, abfd, name, flags, section, value, string,
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insert = true;
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}
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if (section == &bfd_abs_section
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if (bfd_is_abs_section (section)
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&& (IS_GOT_SYM (name) || IS_PLT_SYM (name)))
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{
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h = linux_link_hash_lookup (linux_hash_table (info), name, false,
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@ -359,12 +358,18 @@ linux_add_one_symbol (info, abfd, name, flags, section, value, string,
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if (h != NULL
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&& h->root.root.type == bfd_link_hash_defined)
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{
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if (new_fixup (info, h, value, ! IS_PLT_SYM(name)) == NULL)
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struct fixup *f;
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if (hashp != NULL)
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*hashp = (struct bfd_link_hash_entry *) h;
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f = new_fixup (info, h, value, ! IS_PLT_SYM (name));
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if (f == NULL)
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return false;
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f->jump = IS_PLT_SYM (name);
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return true;
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}
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if (hashp != NULL)
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*hashp = (struct bfd_link_hash_entry *) h;
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}
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/* Do the usual procedure for adding a symbol. */
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@ -413,6 +418,7 @@ linux_tally_symbols (h, data)
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struct fixup *f, *f1;
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int is_plt;
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struct linux_link_hash_entry *h1, *h2;
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boolean exists;
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/* If this symbol is not a PLT/GOT, we do not even need to look at it */
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is_plt = IS_PLT_SYM (h->root.root.root.string);
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@ -440,38 +446,49 @@ linux_tally_symbols (h, data)
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from different shared libraries */
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if (h1 != NULL
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&& ((h1->root.root.type == bfd_link_hash_defined
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&& h1->root.root.u.def.section != &bfd_abs_section)
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&& ! bfd_is_abs_section (h1->root.root.u.def.section))
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|| h2->root.root.type == bfd_link_hash_indirect))
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{
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f = new_fixup (info, h1, h->root.root.u.def.value, 0);
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if (f == NULL)
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{
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/* FIXME: No way to return error. */
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abort ();
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}
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f->jump = is_plt;
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/* See if there is a "builtin" fixup already present
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involving this symbol. If so, convert it to a regular
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fixup. In the end, this relaxes some of the requirements
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about the order of performing fixups. */
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exists = false;
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for (f1 = linux_hash_table (info)->fixup_list;
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f1 != NULL;
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f1 = f1->next)
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{
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if (f1 == f)
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continue;
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if (f1->h != h)
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if (f1->h != h
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|| (! f1->builtin && ! f1->jump))
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continue;
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if (! exists
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&& bfd_is_abs_section (h->root.root.u.def.section))
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{
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f = new_fixup (info, h1, f1->h->root.root.u.def.value, 0);
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f->jump = is_plt;
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}
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f1->h = h1;
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f1->jump = is_plt;
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f1->builtin = 0;
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exists = true;
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}
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if (! exists
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&& bfd_is_abs_section (h->root.root.u.def.section))
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{
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f = new_fixup (info, h1, h->root.root.u.def.value, 0);
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if (f == NULL)
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{
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/* FIXME: No way to return error. */
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abort ();
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}
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f->jump = is_plt;
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}
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}
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/* Quick and dirty way of stripping these symbols from the
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symtab. */
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h->root.written = true;
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if (bfd_is_abs_section (h->root.root.u.def.section))
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h->root.written = true;
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}
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return true;
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@ -697,4 +714,6 @@ linux_finish_dynamic_link (output_bfd, info)
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#define MY_add_one_symbol linux_add_one_symbol
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#define MY_finish_dynamic_link linux_finish_dynamic_link
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#define MY_zmagic_contiguous 1
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#include "aout-target.h"
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