/* Support for the generic parts of most COFF variants, for BFD.
- Copyright 1990-2013 Free Software Foundation, Inc.
+ Copyright (C) 1990-2014 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
. unsigned int _bfd_coff_default_section_alignment_power;
. bfd_boolean _bfd_coff_force_symnames_in_strings;
. unsigned int _bfd_coff_debug_string_prefix_length;
+. unsigned int _bfd_coff_max_nscns;
.
. void (*_bfd_coff_swap_filehdr_in)
. (bfd *, void *, void *);
. ((coff_backend_info (abfd)->_bfd_coff_set_long_section_names) (abfd, enable))
.#define bfd_coff_default_section_alignment_power(abfd) \
. (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
+.#define bfd_coff_max_nscns(abfd) \
+. (coff_backend_info (abfd)->_bfd_coff_max_nscns)
+.
.#define bfd_coff_swap_filehdr_in(abfd, i,o) \
. ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
.
machine = 0;
switch (internal_f->f_magic)
{
-#ifdef OR32_MAGIC_BIG
- case OR32_MAGIC_BIG:
- case OR32_MAGIC_LITTLE:
- arch = bfd_arch_or32;
- break;
-#endif
#ifdef PPCMAGIC
case PPCMAGIC:
arch = bfd_arch_powerpc;
return TRUE;
#endif
-#ifdef OR32_MAGIC_BIG
- case bfd_arch_or32:
- if (bfd_big_endian (abfd))
- * magicp = OR32_MAGIC_BIG;
- else
- * magicp = OR32_MAGIC_LITTLE;
- return TRUE;
-#endif
-
default: /* Unknown architecture. */
/* Fall through to "return FALSE" below, to avoid
"statement never reached" errors on the one below. */
asection *current;
file_ptr sofar = bfd_coff_filhsz (abfd);
bfd_boolean align_adjust;
- int target_index;
+ unsigned int target_index;
#ifdef ALIGN_SECTIONS_IN_FILE
asection *previous = NULL;
file_ptr old_sofar;
}
#endif /* ! COFF_IMAGE_WITH_PE */
- if (target_index >= 32768)
+ if (target_index >= bfd_coff_max_nscns (abfd))
{
bfd_set_error (bfd_error_file_too_big);
(*_bfd_error_handler)
padding the previous section up if necessary. */
old_sofar = sofar;
+ sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
+
#ifdef RS6000COFF_C
- /* AIX loader checks the text section alignment of (vma - filepos)
- So even though the filepos may be aligned wrt the o_algntext, for
- AIX executables, this check fails. This shows up when a native
- AIX executable is stripped with gnu strip because the default vma
- of native is 0x10000150 but default for gnu is 0x10000140. Gnu
- stripped gnu excutable passes this check because the filepos is
- 0x0140. This problem also show up with 64 bit shared objects. The
- data section must also be aligned. */
+ /* Make sure the file offset and the vma of .text/.data are at the
+ same page offset, so that the file can be mmap'ed without being
+ relocated. Failing that, AIX is able to load and execute the
+ program, but it will be silently relocated (possible as
+ executables are PIE). But the relocation is slightly costly and
+ complexify the use of addr2line or gdb. So better to avoid it,
+ like does the native linker. Usually gnu ld makes sure that
+ the vma of .text is the file offset so this issue shouldn't
+ appear unless you are stripping such an executable.
+
+ AIX loader checks the text section alignment of (vma - filepos),
+ and the native linker doesn't try to align the text sections.
+ For example:
+
+ 0 .text 000054cc 10000128 10000128 00000128 2**5
+ CONTENTS, ALLOC, LOAD, CODE
+ */
+
if (!strcmp (current->name, _TEXT)
|| !strcmp (current->name, _DATA))
{
- bfd_vma pad;
- bfd_vma align;
-
- sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
-
- align = 1 << current->alignment_power;
- pad = abs (current->vma - sofar) % align;
-
- if (pad)
- {
- pad = align - pad;
- sofar += pad;
- }
- }
- else
-#else
- {
- sofar = BFD_ALIGN (sofar, 1 << current->alignment_power);
+ bfd_vma align = 4096;
+ bfd_vma sofar_off = sofar % align;
+ bfd_vma vma_off = current->vma % align;
+
+ if (vma_off > sofar_off)
+ sofar += vma_off - sofar_off;
+ else if (vma_off < sofar_off)
+ sofar += align + vma_off - sofar_off;
}
#endif
if (previous != NULL)
internal_a.magic = MIPS_PE_MAGIC;
#endif
-#ifdef OR32
-#define __A_MAGIC_SET__
- internal_a.magic = NMAGIC; /* Assume separate i/d. */
-#endif
-
#ifndef __A_MAGIC_SET__
#include "Your aouthdr magic number is not being set!"
#else
}
#endif
- /* Now write them. */
+#ifdef COFF_WITH_PE
+ {
+ /* After object contents are finalized so we can compute a reasonable hash,
+ but before header is written so we can update it to point to debug directory. */
+ struct pe_tdata *pe = pe_data (abfd);
+
+ if (pe->build_id.after_write_object_contents != NULL)
+ (*pe->build_id.after_write_object_contents) (abfd);
+ }
+#endif
+
+ /* Now write header. */
if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0)
return FALSE;
#else
2,
#endif
+ 32768,
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
#else
2,
#endif
+ 32768,
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
coff_SWAP_reloc_in, ticoff0_bad_format_hook, coff_set_arch_mach_hook,
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
#else
2,
#endif
+ 32768,
coff_SWAP_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
coff_SWAP_reloc_in, ticoff1_bad_format_hook, coff_set_arch_mach_hook,
coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
};
#endif
+#ifdef COFF_WITH_PE_BIGOBJ
+/* The UUID for bigobj files. */
+
+static const char header_bigobj_classid[16] =
+{
+ 0xC7, 0xA1, 0xBA, 0xD1,
+ 0xEE, 0xBA,
+ 0xa9, 0x4b,
+ 0xAF, 0x20,
+ 0xFA, 0xF6, 0x6A, 0xA4, 0xDC, 0xB8
+};
+
+/* Swap routines. */
+
+static void
+coff_bigobj_swap_filehdr_in (bfd * abfd, void * src, void * dst)
+{
+ struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_src =
+ (struct external_ANON_OBJECT_HEADER_BIGOBJ *) src;
+ struct internal_filehdr *filehdr_dst = (struct internal_filehdr *) dst;
+
+ filehdr_dst->f_magic = H_GET_16 (abfd, filehdr_src->Machine);
+ filehdr_dst->f_nscns = H_GET_32 (abfd, filehdr_src->NumberOfSections);
+ filehdr_dst->f_timdat = H_GET_32 (abfd, filehdr_src->TimeDateStamp);
+ filehdr_dst->f_symptr =
+ GET_FILEHDR_SYMPTR (abfd, filehdr_src->PointerToSymbolTable);
+ filehdr_dst->f_nsyms = H_GET_32 (abfd, filehdr_src->NumberOfSymbols);
+ filehdr_dst->f_opthdr = 0;
+ filehdr_dst->f_flags = 0;
+
+ /* Check other magic numbers. */
+ if (H_GET_16 (abfd, filehdr_src->Sig1) != IMAGE_FILE_MACHINE_UNKNOWN
+ || H_GET_16 (abfd, filehdr_src->Sig2) != 0xffff
+ || H_GET_16 (abfd, filehdr_src->Version) != 2
+ || memcmp (filehdr_src->ClassID, header_bigobj_classid, 16) != 0)
+ filehdr_dst->f_opthdr = 0xffff;
+
+ /* Note that CLR metadata are ignored. */
+}
+
+static unsigned int
+coff_bigobj_swap_filehdr_out (bfd *abfd, void * in, void * out)
+{
+ struct internal_filehdr *filehdr_in = (struct internal_filehdr *) in;
+ struct external_ANON_OBJECT_HEADER_BIGOBJ *filehdr_out =
+ (struct external_ANON_OBJECT_HEADER_BIGOBJ *) out;
+
+ memset (filehdr_out, 0, sizeof (*filehdr_out));
+
+ H_PUT_16 (abfd, IMAGE_FILE_MACHINE_UNKNOWN, filehdr_out->Sig1);
+ H_PUT_16 (abfd, 0xffff, filehdr_out->Sig2);
+ H_PUT_16 (abfd, 2, filehdr_out->Version);
+ memcpy (filehdr_out->ClassID, header_bigobj_classid, 16);
+ H_PUT_16 (abfd, filehdr_in->f_magic, filehdr_out->Machine);
+ H_PUT_32 (abfd, filehdr_in->f_nscns, filehdr_out->NumberOfSections);
+ H_PUT_32 (abfd, filehdr_in->f_timdat, filehdr_out->TimeDateStamp);
+ PUT_FILEHDR_SYMPTR (abfd, filehdr_in->f_symptr,
+ filehdr_out->PointerToSymbolTable);
+ H_PUT_32 (abfd, filehdr_in->f_nsyms, filehdr_out->NumberOfSymbols);
+
+ return bfd_coff_filhsz (abfd);
+}
+
+static void
+coff_bigobj_swap_sym_in (bfd * abfd, void * ext1, void * in1)
+{
+ SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) ext1;
+ struct internal_syment *in = (struct internal_syment *) in1;
+
+ if (ext->e.e_name[0] == 0)
+ {
+ in->_n._n_n._n_zeroes = 0;
+ in->_n._n_n._n_offset = H_GET_32 (abfd, ext->e.e.e_offset);
+ }
+ else
+ {
+#if SYMNMLEN != E_SYMNMLEN
+#error we need to cope with truncating or extending SYMNMLEN
+#else
+ memcpy (in->_n._n_name, ext->e.e_name, SYMNMLEN);
+#endif
+ }
+
+ in->n_value = H_GET_32 (abfd, ext->e_value);
+ in->n_scnum = H_GET_32 (abfd, ext->e_scnum);
+ in->n_type = H_GET_16 (abfd, ext->e_type);
+ in->n_sclass = H_GET_8 (abfd, ext->e_sclass);
+ in->n_numaux = H_GET_8 (abfd, ext->e_numaux);
+}
+
+static unsigned int
+coff_bigobj_swap_sym_out (bfd * abfd, void * inp, void * extp)
+{
+ struct internal_syment *in = (struct internal_syment *) inp;
+ SYMENT_BIGOBJ *ext = (SYMENT_BIGOBJ *) extp;
+
+ if (in->_n._n_name[0] == 0)
+ {
+ H_PUT_32 (abfd, 0, ext->e.e.e_zeroes);
+ H_PUT_32 (abfd, in->_n._n_n._n_offset, ext->e.e.e_offset);
+ }
+ else
+ {
+#if SYMNMLEN != E_SYMNMLEN
+#error we need to cope with truncating or extending SYMNMLEN
+#else
+ memcpy (ext->e.e_name, in->_n._n_name, SYMNMLEN);
+#endif
+ }
+
+ H_PUT_32 (abfd, in->n_value, ext->e_value);
+ H_PUT_32 (abfd, in->n_scnum, ext->e_scnum);
+
+ H_PUT_16 (abfd, in->n_type, ext->e_type);
+ H_PUT_8 (abfd, in->n_sclass, ext->e_sclass);
+ H_PUT_8 (abfd, in->n_numaux, ext->e_numaux);
+
+ return SYMESZ_BIGOBJ;
+}
+
+static void
+coff_bigobj_swap_aux_in (bfd *abfd,
+ void * ext1,
+ int type,
+ int in_class,
+ int indx,
+ int numaux,
+ void * in1)
+{
+ AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) ext1;
+ union internal_auxent *in = (union internal_auxent *) in1;
+
+ switch (in_class)
+ {
+ case C_FILE:
+ if (numaux > 1)
+ {
+ if (indx == 0)
+ memcpy (in->x_file.x_fname, ext->File.Name,
+ numaux * sizeof (AUXENT_BIGOBJ));
+ }
+ else
+ memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
+ break;
+
+ case C_STAT:
+ case C_LEAFSTAT:
+ case C_HIDDEN:
+ if (type == T_NULL)
+ {
+ in->x_scn.x_scnlen = H_GET_32 (abfd, ext->Section.Length);
+ in->x_scn.x_nreloc =
+ H_GET_16 (abfd, ext->Section.NumberOfRelocations);
+ in->x_scn.x_nlinno =
+ H_GET_16 (abfd, ext->Section.NumberOfLinenumbers);
+ in->x_scn.x_checksum = H_GET_32 (abfd, ext->Section.Checksum);
+ in->x_scn.x_associated = H_GET_16 (abfd, ext->Section.Number)
+ | (H_GET_16 (abfd, ext->Section.HighNumber) << 16);
+ in->x_scn.x_comdat = H_GET_8 (abfd, ext->Section.Selection);
+ return;
+ }
+ break;
+
+ default:
+ in->x_sym.x_tagndx.l = H_GET_32 (abfd, ext->Sym.WeakDefaultSymIndex);
+ /* Characteristics is ignored. */
+ break;
+ }
+}
+
+static unsigned int
+coff_bigobj_swap_aux_out (bfd * abfd,
+ void * inp,
+ int type,
+ int in_class,
+ int indx ATTRIBUTE_UNUSED,
+ int numaux ATTRIBUTE_UNUSED,
+ void * extp)
+{
+ union internal_auxent * in = (union internal_auxent *) inp;
+ AUXENT_BIGOBJ *ext = (AUXENT_BIGOBJ *) extp;
+
+ memset (ext, 0, AUXESZ);
+
+ switch (in_class)
+ {
+ case C_FILE:
+ memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
+
+ return AUXESZ;
+
+ case C_STAT:
+ case C_LEAFSTAT:
+ case C_HIDDEN:
+ if (type == T_NULL)
+ {
+ H_PUT_32 (abfd, in->x_scn.x_scnlen, ext->Section.Length);
+ H_PUT_16 (abfd, in->x_scn.x_nreloc,
+ ext->Section.NumberOfRelocations);
+ H_PUT_16 (abfd, in->x_scn.x_nlinno,
+ ext->Section.NumberOfLinenumbers);
+ H_PUT_32 (abfd, in->x_scn.x_checksum, ext->Section.Checksum);
+ H_PUT_16 (abfd, in->x_scn.x_associated & 0xffff,
+ ext->Section.Number);
+ H_PUT_16 (abfd, (in->x_scn.x_associated >> 16),
+ ext->Section.HighNumber);
+ H_PUT_8 (abfd, in->x_scn.x_comdat, ext->Section.Selection);
+ return AUXESZ;
+ }
+ break;
+ }
+
+ H_PUT_32 (abfd, in->x_sym.x_tagndx.l, ext->Sym.WeakDefaultSymIndex);
+ H_PUT_32 (abfd, 1, ext->Sym.WeakSearchType);
+
+ return AUXESZ;
+}
+
+static bfd_coff_backend_data bigobj_swap_table =
+{
+ coff_bigobj_swap_aux_in, coff_bigobj_swap_sym_in, coff_SWAP_lineno_in,
+ coff_bigobj_swap_aux_out, coff_bigobj_swap_sym_out,
+ coff_SWAP_lineno_out, coff_SWAP_reloc_out,
+ coff_bigobj_swap_filehdr_out, coff_SWAP_aouthdr_out,
+ coff_SWAP_scnhdr_out,
+ FILHSZ_BIGOBJ, AOUTSZ, SCNHSZ, SYMESZ_BIGOBJ, AUXESZ_BIGOBJ,
+ RELSZ, LINESZ, FILNMLEN_BIGOBJ,
+ TRUE,
+ COFF_DEFAULT_LONG_SECTION_NAMES,
+ COFF_DEFAULT_SECTION_ALIGNMENT_POWER,
+ FALSE,
+ 2,
+ 1U << 31,
+ coff_bigobj_swap_filehdr_in, coff_SWAP_aouthdr_in, coff_SWAP_scnhdr_in,
+ coff_SWAP_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
+ coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
+ coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
+ coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
+ coff_classify_symbol, coff_compute_section_file_positions,
+ coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
+ coff_adjust_symndx, coff_link_add_one_symbol,
+ coff_link_output_has_begun, coff_final_link_postscript,
+ bfd_pe_print_pdata /* huh */
+};
+
+#endif /* COFF_WITH_PE_BIGOBJ */
+
#ifndef coff_close_and_cleanup
#define coff_close_and_cleanup _bfd_generic_close_and_cleanup
#endif
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