/* POWER/PowerPC XCOFF linker support.
- Copyright 1995 Free Software Foundation, Inc.
+ Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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.
+ 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. */
+ 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 "coff/internal.h"
+#include "coff/xcoff.h"
#include "libcoff.h"
+#include "libxcoff.h"
-/* This file holds the XCOFF linker code. A lot of it is very similar
- to the COFF linker code. However, it is different enough that I
- chose to avoid trying to hack up the COFF code to support XCOFF.
- That leads to a certain amount of duplicated code, alas. */
+/* This file holds the XCOFF linker code. */
#define STRING_SIZE_SIZE (4)
-/* Get the XCOFF hash table entries for a BFD. */
-#define obj_xcoff_sym_hashes(bfd) \
- ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd))
-
-/* XCOFF relocation types. These probably belong in a header file
- somewhere. The relocations are described in the function
- _bfd_ppc_xcoff_relocate_section in this file. */
-
-#define R_POS (0x00)
-#define R_NEG (0x01)
-#define R_REL (0x02)
-#define R_TOC (0x03)
-#define R_RTB (0x04)
-#define R_GL (0x05)
-#define R_TCL (0x06)
-#define R_BA (0x08)
-#define R_BR (0x0a)
-#define R_RL (0x0c)
-#define R_RLA (0x0d)
-#define R_REF (0x0f)
-#define R_TRL (0x12)
-#define R_TRLA (0x13)
-#define R_RRTBI (0x14)
-#define R_RRTBA (0x15)
-#define R_CAI (0x16)
-#define R_CREL (0x17)
-#define R_RBA (0x18)
-#define R_RBAC (0x19)
-#define R_RBR (0x1a)
-#define R_RBRC (0x1b)
-
-/* The first word of global linkage code. This must be modified by
- filling in the correct TOC offset. */
-
-#define XCOFF_GLINK_FIRST (0x81820000) /* lwz r12,0(r2) */
-
-/* The remaining words of global linkage code. */
-
-static unsigned long xcoff_glink_code[] =
-{
- 0x90410014, /* stw r2,20(r1) */
- 0x800c0000, /* lwz r0,0(r12) */
- 0x804c0004, /* lwz r2,4(r12) */
- 0x7c0903a6, /* mtctr r0 */
- 0x4e800420, /* bctr */
- 0x0, /* start of traceback table */
- 0x000c8000, /* traceback table */
- 0x0 /* traceback table */
-};
-
-#define XCOFF_GLINK_SIZE \
- (((sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]) * 4) + 4)
-
/* We reuse the SEC_ROM flag as a mark flag for garbage collection.
This flag will only be used on input sections. */
#define SEC_MARK (SEC_ROM)
-/* The ldhdr structure. This appears at the start of the .loader
- section. */
-
-struct internal_ldhdr
-{
- /* The version number: currently always 1. */
- unsigned long l_version;
- /* The number of symbol table entries. */
- bfd_size_type l_nsyms;
- /* The number of relocation table entries. */
- bfd_size_type l_nreloc;
- /* The length of the import file string table. */
- bfd_size_type l_istlen;
- /* The number of import files. */
- bfd_size_type l_nimpid;
- /* The offset from the start of the .loader section to the first
- entry in the import file table. */
- bfd_size_type l_impoff;
- /* The length of the string table. */
- bfd_size_type l_stlen;
- /* The offset from the start of the .loader section to the first
- entry in the string table. */
- bfd_size_type l_stoff;
-};
-
-struct external_ldhdr
-{
- bfd_byte l_version[4];
- bfd_byte l_nsyms[4];
- bfd_byte l_nreloc[4];
- bfd_byte l_istlen[4];
- bfd_byte l_nimpid[4];
- bfd_byte l_impoff[4];
- bfd_byte l_stlen[4];
- bfd_byte l_stoff[4];
-};
-
-#define LDHDRSZ (8 * 4)
-
-/* The ldsym structure. This is used to represent a symbol in the
- .loader section. */
-
-struct internal_ldsym
-{
- union
- {
- /* The symbol name if <= SYMNMLEN characters. */
- char _l_name[SYMNMLEN];
- struct
- {
- /* Zero if the symbol name is more than SYMNMLEN characters. */
- long _l_zeroes;
- /* The offset in the string table if the symbol name is more
- than SYMNMLEN characters. */
- long _l_offset;
- } _l_l;
- } _l;
- /* The symbol value. */
- bfd_vma l_value;
- /* The symbol section number. */
- short l_scnum;
- /* The symbol type and flags. */
- char l_smtype;
- /* The symbol storage class. */
- char l_smclas;
- /* The import file ID. */
- bfd_size_type l_ifile;
- /* Offset to the parameter type check string. */
- bfd_size_type l_parm;
-};
-
-struct external_ldsym
-{
- union
- {
- bfd_byte _l_name[SYMNMLEN];
- struct
- {
- bfd_byte _l_zeroes[4];
- bfd_byte _l_offset[4];
- } _l_l;
- } _l;
- bfd_byte l_value[4];
- bfd_byte l_scnum[2];
- bfd_byte l_smtype[1];
- bfd_byte l_smclas[1];
- bfd_byte l_ifile[4];
- bfd_byte l_parm[4];
-};
-
-#define LDSYMSZ (8 + 3 * 4 + 2 + 2)
-
-/* These flags are for the l_smtype field (the lower three bits are an
- XTY_* value). */
-
-/* Imported symbol. */
-#define L_IMPORT (0x40)
-/* Entry point. */
-#define L_ENTRY (0x20)
-/* Exported symbol. */
-#define L_EXPORT (0x10)
-
-/* The ldrel structure. This is used to represent a reloc in the
- .loader section. */
-
-struct internal_ldrel
-{
- /* The reloc address. */
- bfd_vma l_vaddr;
- /* The symbol table index in the .loader section symbol table. */
- bfd_size_type l_symndx;
- /* The relocation type and size. */
- short l_rtype;
- /* The section number this relocation applies to. */
- short l_rsecnm;
-};
-
-struct external_ldrel
-{
- bfd_byte l_vaddr[4];
- bfd_byte l_symndx[4];
- bfd_byte l_rtype[2];
- bfd_byte l_rsecnm[2];
-};
-
-#define LDRELSZ (2 * 4 + 2 * 2)
-
/* The list of import files. */
struct xcoff_import_file
const char *member;
};
-/* An entry in the XCOFF linker hash table. */
-
-struct xcoff_link_hash_entry
-{
- struct bfd_link_hash_entry root;
-
- /* Symbol index in output file. Set to -1 initially. Set to -2 if
- there is a reloc against this symbol. */
- long indx;
-
- /* If we have created a TOC entry for this symbol, this is the .tc
- section which holds it. */
- asection *toc_section;
-
- /* If we have created a TOC entry, this is the offset in
- toc_section. */
- bfd_vma toc_offset;
-
- /* If this symbol is a function entry point which is called, this
- field holds a pointer to the function descriptor. */
- struct xcoff_link_hash_entry *descriptor;
-
- /* The .loader symbol table entry, if there is one. */
- struct internal_ldsym *ldsym;
-
- /* The .loader symbol table index. */
- long ldindx;
-
- /* Some linker flags. */
- unsigned short flags;
- /* Symbol is referenced by a regular object. */
-#define XCOFF_REF_REGULAR (01)
- /* Symbol is defined by a regular object. */
-#define XCOFF_DEF_REGULAR (02)
- /* Symbol is referenced by a dynamic object. */
-#define XCOFF_REF_DYNAMIC (04)
- /* Symbol is used in a reloc being copied into the .loader section. */
-#define XCOFF_LDREL (010)
- /* Symbol is the entry point. */
-#define XCOFF_ENTRY (020)
- /* Symbol is called; this is, it appears in a R_BR reloc. */
-#define XCOFF_CALLED (040)
- /* Symbol needs the TOC entry filled in. */
-#define XCOFF_SET_TOC (0100)
- /* Symbol is explicitly imported. */
-#define XCOFF_IMPORT (0200)
- /* Symbol is explicitly exported. */
-#define XCOFF_EXPORT (0400)
- /* Symbol has been processed by xcoff_build_ldsyms. */
-#define XCOFF_BUILT_LDSYM (01000)
- /* Symbol is mentioned by a section which was not garbage collected. */
-#define XCOFF_MARK (02000)
-
- /* The storage mapping class. */
- unsigned char smclas;
-};
-
-/* The XCOFF linker hash table. */
-
-struct xcoff_link_hash_table
-{
- struct bfd_link_hash_table root;
-
- /* The .debug string hash table. We need to compute this while
- reading the input files, so that we know how large the .debug
- section will be before we assign section positions. */
- struct bfd_strtab_hash *debug_strtab;
-
- /* The .debug section we will use for the final output. */
- asection *debug_section;
-
- /* The .loader section we will use for the final output. */
- asection *loader_section;
-
- /* A count of non TOC relative relocs which will need to be
- allocated in the .loader section. */
- size_t ldrel_count;
-
- /* The .loader section header. */
- struct internal_ldhdr ldhdr;
-
- /* The .gl section we use to hold global linkage code. */
- asection *linkage_section;
-
- /* The .tc section we use to hold toc entries we build for global
- linkage code. */
- asection *toc_section;
-
- /* The list of import files. */
- struct xcoff_import_file *imports;
-
- /* Required alignment of sections within the output file. */
- unsigned long file_align;
-
- /* Whether the .text section must be read-only. */
- boolean textro;
-
- /* Whether garbage collection was done. */
- boolean gc;
-};
-
/* Information we keep for each section in the output file during the
final link phase. */
/* For each reloc against a global symbol whose index was not known
when the reloc was handled, the global hash table entry. */
struct xcoff_link_hash_entry **rel_hashes;
+ /* If there is a TOC relative reloc against a global symbol, and the
+ index of the TOC symbol is not known when the reloc was handled,
+ an entry is added to this linked list. This is not an array,
+ like rel_hashes, because this case is quite uncommon. */
+ struct xcoff_toc_rel_hash {
+ struct xcoff_toc_rel_hash *next;
+ struct xcoff_link_hash_entry *h;
+ struct internal_reloc *rel;
+ } *toc_rel_hashes;
};
/* Information that we pass around while doing the final link step. */
/* Symbol index of TOC symbol. */
long toc_symindx;
/* Start of .loader symbols. */
- struct external_ldsym *ldsym;
+ bfd_byte *ldsym;
/* Next .loader reloc to swap out. */
- struct external_ldrel *ldrel;
+ bfd_byte *ldrel;
+ /* File position of start of line numbers. */
+ file_ptr line_filepos;
/* Buffer large enough to hold swapped symbols of any input file. */
struct internal_syment *internal_syms;
/* Buffer large enough to hold output indices of symbols of any
bfd_byte *external_relocs;
};
-static void xcoff_swap_ldhdr_out
- PARAMS ((bfd *, const struct internal_ldhdr *, struct external_ldhdr *));
-static void xcoff_swap_ldsym_out
- PARAMS ((bfd *, const struct internal_ldsym *, struct external_ldsym *));
-static void xcoff_swap_ldrel_out
- PARAMS ((bfd *, const struct internal_ldrel *, struct external_ldrel *));
static struct bfd_hash_entry *xcoff_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
+static bfd_boolean xcoff_get_section_contents PARAMS ((bfd *, asection *));
static struct internal_reloc *xcoff_read_internal_relocs
- PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
+ PARAMS ((bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
struct internal_reloc *));
-static boolean xcoff_link_add_object_symbols
+static bfd_boolean xcoff_link_add_object_symbols
+ PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean xcoff_link_check_archive_element
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
+static bfd_boolean xcoff_link_check_ar_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
+static bfd_boolean xcoff_link_check_dynamic_ar_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
+static bfd_size_type xcoff_find_reloc
+ PARAMS ((struct internal_reloc *, bfd_size_type, bfd_vma));
+static bfd_boolean xcoff_link_add_symbols
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean xcoff_link_check_archive_element
- PARAMS ((bfd *, struct bfd_link_info *, boolean *));
-static boolean xcoff_link_check_ar_symbols
- PARAMS ((bfd *, struct bfd_link_info *, boolean *));
-static boolean xcoff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *));
-static boolean xcoff_link_add_dynamic_symbols
+static bfd_boolean xcoff_link_add_dynamic_symbols
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *));
+static bfd_boolean xcoff_mark_symbol
+ PARAMS ((struct bfd_link_info *, struct xcoff_link_hash_entry *));
+static bfd_boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *));
static void xcoff_sweep PARAMS ((struct bfd_link_info *));
-static boolean xcoff_build_ldsyms
+static bfd_boolean xcoff_build_ldsyms
PARAMS ((struct xcoff_link_hash_entry *, PTR));
-static boolean xcoff_link_input_bfd
+static bfd_boolean xcoff_link_input_bfd
PARAMS ((struct xcoff_final_link_info *, bfd *));
-static boolean xcoff_write_global_symbol
+static bfd_boolean xcoff_write_global_symbol
PARAMS ((struct xcoff_link_hash_entry *, PTR));
-static boolean xcoff_reloc_link_order
+static bfd_boolean xcoff_reloc_link_order
PARAMS ((bfd *, struct xcoff_final_link_info *, asection *,
struct bfd_link_order *));
static int xcoff_sort_relocs PARAMS ((const PTR, const PTR));
\f
-/* Routines to swap information in the XCOFF .loader section. We only
- need to swap this information out, not in. I believe that only the
- loader needs to swap this information in. If we ever need to write
- an XCOFF loader, this stuff will need to be moved to another file
- shared by the linker (which XCOFF calls the ``binder'') and the
- loader. */
-/* Swap out the ldhdr structure. */
+/* Routines to read XCOFF dynamic information. This don't really
+ belong here, but we already have the ldsym manipulation routines
+ here. */
-static void
-xcoff_swap_ldhdr_out (abfd, src, dst)
+/* Read the contents of a section. */
+
+static bfd_boolean
+xcoff_get_section_contents (abfd, sec)
+ bfd *abfd;
+ asection *sec;
+{
+
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ bfd_size_type amt = sizeof (struct coff_section_tdata);
+ sec->used_by_bfd = bfd_zalloc (abfd, amt);
+ if (sec->used_by_bfd == NULL)
+ return FALSE;
+ }
+
+ if (coff_section_data (abfd, sec)->contents == NULL)
+ {
+ coff_section_data (abfd, sec)->contents = ((bfd_byte *)
+ bfd_malloc (sec->_raw_size));
+ if (coff_section_data (abfd, sec)->contents == NULL)
+ return FALSE;
+
+ if (! bfd_get_section_contents (abfd, sec,
+ coff_section_data (abfd, sec)->contents,
+ (file_ptr) 0, sec->_raw_size))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Get the size required to hold the dynamic symbols. */
+
+long
+_bfd_xcoff_get_dynamic_symtab_upper_bound (abfd)
bfd *abfd;
- const struct internal_ldhdr *src;
- struct external_ldhdr *dst;
{
- bfd_put_32 (abfd, src->l_version, dst->l_version);
- bfd_put_32 (abfd, src->l_nsyms, dst->l_nsyms);
- bfd_put_32 (abfd, src->l_nreloc, dst->l_nreloc);
- bfd_put_32 (abfd, src->l_istlen, dst->l_istlen);
- bfd_put_32 (abfd, src->l_nimpid, dst->l_nimpid);
- bfd_put_32 (abfd, src->l_impoff, dst->l_impoff);
- bfd_put_32 (abfd, src->l_stlen, dst->l_stlen);
- bfd_put_32 (abfd, src->l_stoff, dst->l_stoff);
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+
+ if ((abfd->flags & DYNAMIC) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return -1;
+ }
+
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return -1;
+ contents = coff_section_data (abfd, lsec)->contents;
+
+ bfd_xcoff_swap_ldhdr_in (abfd, (PTR) contents, &ldhdr);
+
+ return (ldhdr.l_nsyms + 1) * sizeof (asymbol *);
}
-/* Swap out the ldsym structure. */
+/* Get the dynamic symbols. */
-static void
-xcoff_swap_ldsym_out (abfd, src, dst)
+long
+_bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms)
bfd *abfd;
- const struct internal_ldsym *src;
- struct external_ldsym *dst;
+ asymbol **psyms;
{
- if (src->_l._l_l._l_zeroes != 0)
- memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN);
- else
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+ const char *strings;
+ bfd_byte *elsym, *elsymend;
+ coff_symbol_type *symbuf;
+
+ if ((abfd->flags & DYNAMIC) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return -1;
+ }
+
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return -1;
+ contents = coff_section_data (abfd, lsec)->contents;
+
+ coff_section_data (abfd, lsec)->keep_contents = TRUE;
+
+ bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
+
+ strings = (char *) contents + ldhdr.l_stoff;
+
+ symbuf = ((coff_symbol_type *)
+ bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (coff_symbol_type)));
+ if (symbuf == NULL)
+ return -1;
+
+ elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
+
+ elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
+ for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd), symbuf++, psyms++)
{
- bfd_put_32 (abfd, 0, dst->_l._l_l._l_zeroes);
- bfd_put_32 (abfd, src->_l._l_l._l_offset, dst->_l._l_l._l_offset);
+ struct internal_ldsym ldsym;
+
+ bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
+
+ symbuf->symbol.the_bfd = abfd;
+
+ if (ldsym._l._l_l._l_zeroes == 0)
+ symbuf->symbol.name = strings + ldsym._l._l_l._l_offset;
+ else
+ {
+ char *c;
+
+ c = bfd_alloc (abfd, (bfd_size_type) SYMNMLEN + 1);
+ if (c == NULL)
+ return -1;
+ memcpy (c, ldsym._l._l_name, SYMNMLEN);
+ c[SYMNMLEN] = '\0';
+ symbuf->symbol.name = c;
+ }
+
+ if (ldsym.l_smclas == XMC_XO)
+ symbuf->symbol.section = bfd_abs_section_ptr;
+ else
+ symbuf->symbol.section = coff_section_from_bfd_index (abfd,
+ ldsym.l_scnum);
+ symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma;
+
+ symbuf->symbol.flags = BSF_NO_FLAGS;
+ if ((ldsym.l_smtype & L_EXPORT) != 0)
+ symbuf->symbol.flags |= BSF_GLOBAL;
+
+ /* FIXME: We have no way to record the other information stored
+ with the loader symbol. */
+
+ *psyms = (asymbol *) symbuf;
}
- bfd_put_32 (abfd, src->l_value, dst->l_value);
- bfd_put_16 (abfd, src->l_scnum, dst->l_scnum);
- bfd_put_8 (abfd, src->l_smtype, dst->l_smtype);
- bfd_put_8 (abfd, src->l_smclas, dst->l_smclas);
- bfd_put_32 (abfd, src->l_ifile, dst->l_ifile);
- bfd_put_32 (abfd, src->l_parm, dst->l_parm);
+
+ *psyms = NULL;
+
+ return ldhdr.l_nsyms;
}
-/* Swap out the ldrel structure. */
+/* Get the size required to hold the dynamic relocs. */
-static void
-xcoff_swap_ldrel_out (abfd, src, dst)
+long
+_bfd_xcoff_get_dynamic_reloc_upper_bound (abfd)
+ bfd *abfd;
+{
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+
+ if ((abfd->flags & DYNAMIC) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return -1;
+ }
+
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return -1;
+ contents = coff_section_data (abfd, lsec)->contents;
+
+ bfd_xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr);
+
+ return (ldhdr.l_nreloc + 1) * sizeof (arelent *);
+}
+
+/* Get the dynamic relocs. */
+
+long
+_bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms)
bfd *abfd;
- const struct internal_ldrel *src;
- struct external_ldrel *dst;
+ arelent **prelocs;
+ asymbol **syms;
{
- bfd_put_32 (abfd, src->l_vaddr, dst->l_vaddr);
- bfd_put_32 (abfd, src->l_symndx, dst->l_symndx);
- bfd_put_16 (abfd, src->l_rtype, dst->l_rtype);
- bfd_put_16 (abfd, src->l_rsecnm, dst->l_rsecnm);
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+ arelent *relbuf;
+ bfd_byte *elrel, *elrelend;
+
+ if ((abfd->flags & DYNAMIC) == 0)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ bfd_set_error (bfd_error_no_symbols);
+ return -1;
+ }
+
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return -1;
+ contents = coff_section_data (abfd, lsec)->contents;
+
+ bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
+
+ relbuf = (arelent *) bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent));
+ if (relbuf == NULL)
+ return -1;
+
+ elrel = contents + bfd_xcoff_loader_reloc_offset(abfd, &ldhdr);
+
+ elrelend = elrel + ldhdr.l_nreloc * bfd_xcoff_ldrelsz(abfd);
+ for (; elrel < elrelend; elrel += bfd_xcoff_ldrelsz(abfd), relbuf++,
+ prelocs++)
+ {
+ struct internal_ldrel ldrel;
+
+ bfd_xcoff_swap_ldrel_in (abfd, elrel, &ldrel);
+
+ if (ldrel.l_symndx >= 3)
+ relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3);
+ else
+ {
+ const char *name;
+ asection *sec;
+
+ switch (ldrel.l_symndx)
+ {
+ case 0:
+ name = ".text";
+ break;
+ case 1:
+ name = ".data";
+ break;
+ case 2:
+ name = ".bss";
+ break;
+ default:
+ abort ();
+ break;
+ }
+
+ sec = bfd_get_section_by_name (abfd, name);
+ if (sec == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return -1;
+ }
+
+ relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr;
+ }
+
+ relbuf->address = ldrel.l_vaddr;
+ relbuf->addend = 0;
+
+ /* Most dynamic relocs have the same type. FIXME: This is only
+ correct if ldrel.l_rtype == 0. In other cases, we should use
+ a different howto. */
+ relbuf->howto = bfd_xcoff_dynamic_reloc_howto(abfd);
+
+ /* FIXME: We have no way to record the l_rsecnm field. */
+
+ *prelocs = relbuf;
+ }
+
+ *prelocs = NULL;
+
+ return ldhdr.l_nreloc;
}
\f
/* Routine to create an entry in an XCOFF link hash table. */
ret = ((struct xcoff_link_hash_entry *)
bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry)));
if (ret == (struct xcoff_link_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_hash_entry *) ret;
- }
+ return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct xcoff_link_hash_entry *)
/* Set local fields. */
ret->indx = -1;
ret->toc_section = NULL;
- ret->toc_offset = 0;
+ ret->u.toc_indx = -1;
ret->descriptor = NULL;
ret->ldsym = NULL;
ret->ldindx = -1;
bfd *abfd;
{
struct xcoff_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct xcoff_link_hash_table);
- ret = ((struct xcoff_link_hash_table *)
- bfd_alloc (abfd, sizeof (struct xcoff_link_hash_table)));
+ ret = (struct xcoff_link_hash_table *) bfd_malloc (amt);
if (ret == (struct xcoff_link_hash_table *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_link_hash_table *) NULL;
- }
+ return (struct bfd_link_hash_table *) NULL;
if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc))
{
- bfd_release (abfd, ret);
+ free (ret);
return (struct bfd_link_hash_table *) NULL;
}
memset (&ret->ldhdr, 0, sizeof (struct internal_ldhdr));
ret->linkage_section = NULL;
ret->toc_section = NULL;
+ ret->descriptor_section = NULL;
ret->imports = NULL;
ret->file_align = 0;
- ret->textro = false;
- ret->gc = false;
+ ret->textro = FALSE;
+ ret->gc = FALSE;
+ memset (ret->special_sections, 0, sizeof ret->special_sections);
+
+ /* The linker will always generate a full a.out header. We need to
+ record that fact now, before the sizeof_headers routine could be
+ called. */
+ xcoff_data (abfd)->full_aouthdr = TRUE;
return &ret->root;
}
-/* Look up an entry in an XCOFF link hash table. */
-
-#define xcoff_link_hash_lookup(table, string, create, copy, follow) \
- ((struct xcoff_link_hash_entry *) \
- bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\
- (follow)))
-
-/* Traverse an XCOFF link hash table. */
-
-#define xcoff_link_hash_traverse(table, func, info) \
- (bfd_link_hash_traverse \
- (&(table)->root, \
- (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
- (info)))
+/* Free a XCOFF link hash table. */
-/* Get the XCOFF link hash table from the info structure. This is
- just a cast. */
+void
+_bfd_xcoff_bfd_link_hash_table_free (hash)
+ struct bfd_link_hash_table *hash;
+{
+ struct xcoff_link_hash_table *ret = (struct xcoff_link_hash_table *) hash;
-#define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash))
+ _bfd_stringtab_free (ret->debug_strtab);
+ bfd_hash_table_free (&ret->root.table);
+ free (ret);
+}
\f
/* Read internal relocs for an XCOFF csect. This is a wrapper around
_bfd_coff_read_internal_relocs which tries to take advantage of any
require_internal, internal_relocs)
bfd *abfd;
asection *sec;
- boolean cache;
+ bfd_boolean cache;
bfd_byte *external_relocs;
- boolean require_internal;
+ bfd_boolean require_internal;
struct internal_reloc *internal_relocs;
{
+
if (coff_section_data (abfd, sec) != NULL
&& coff_section_data (abfd, sec)->relocs == NULL
&& xcoff_section_data (abfd, sec) != NULL)
if (enclosing != NULL
&& (coff_section_data (abfd, enclosing) == NULL
|| coff_section_data (abfd, enclosing)->relocs == NULL)
- && cache)
+ && cache
+ && enclosing->reloc_count > 0)
{
- if (_bfd_coff_read_internal_relocs (abfd, enclosing, true,
- external_relocs, false,
+ if (_bfd_coff_read_internal_relocs (abfd, enclosing, TRUE,
+ external_relocs, FALSE,
(struct internal_reloc *) NULL)
== NULL)
return NULL;
off = ((sec->rel_filepos - enclosing->rel_filepos)
/ bfd_coff_relsz (abfd));
+
if (! require_internal)
return coff_section_data (abfd, enclosing)->relocs + off;
memcpy (internal_relocs,
/* Given an XCOFF BFD, add symbols to the global hash table as
appropriate. */
-boolean
+bfd_boolean
_bfd_xcoff_bfd_link_add_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
+
switch (bfd_get_format (abfd))
{
case bfd_object:
return xcoff_link_add_object_symbols (abfd, info);
+
case bfd_archive:
- return (_bfd_generic_link_add_archive_symbols
- (abfd, info, xcoff_link_check_archive_element));
+ /* If the archive has a map, do the usual search. We then need
+ to check the archive for dynamic objects, because they may not
+ appear in the archive map even though they should, perhaps, be
+ included. If the archive has no map, we just consider each object
+ file in turn, since that apparently is what the AIX native linker
+ does. */
+ if (bfd_has_map (abfd))
+ {
+ if (! (_bfd_generic_link_add_archive_symbols
+ (abfd, info, xcoff_link_check_archive_element)))
+ return FALSE;
+ }
+
+ {
+ bfd *member;
+
+ member = bfd_openr_next_archived_file (abfd, (bfd *) NULL);
+ while (member != NULL)
+ {
+ if (bfd_check_format (member, bfd_object)
+ && (info->hash->creator == member->xvec)
+ && (! bfd_has_map (abfd) || (member->flags & DYNAMIC) != 0))
+ {
+ bfd_boolean needed;
+
+ if (! xcoff_link_check_archive_element (member, info,
+ &needed))
+ return FALSE;
+ if (needed)
+ member->archive_pass = -1;
+ }
+ member = bfd_openr_next_archived_file (abfd, member);
+ }
+ }
+
+ return TRUE;
+
default:
bfd_set_error (bfd_error_wrong_format);
- return false;
+ return FALSE;
}
}
/* Add symbols from an XCOFF object file. */
-static boolean
+static bfd_boolean
xcoff_link_add_object_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
+
if (! _bfd_coff_get_external_symbols (abfd))
- return false;
+ return FALSE;
if (! xcoff_link_add_symbols (abfd, info))
- return false;
+ return FALSE;
if (! info->keep_memory)
{
if (! _bfd_coff_free_symbols (abfd))
- return false;
+ return FALSE;
}
- return true;
+ return TRUE;
}
/* Check a single archive element to see if we need to include it in
needed in the link or not. This is called via
_bfd_generic_link_add_archive_symbols. */
-static boolean
+static bfd_boolean
xcoff_link_check_archive_element (abfd, info, pneeded)
bfd *abfd;
struct bfd_link_info *info;
- boolean *pneeded;
+ bfd_boolean *pneeded;
{
+
if (! _bfd_coff_get_external_symbols (abfd))
- return false;
+ return FALSE;
if (! xcoff_link_check_ar_symbols (abfd, info, pneeded))
- return false;
+ return FALSE;
if (*pneeded)
{
if (! xcoff_link_add_symbols (abfd, info))
- return false;
+ return FALSE;
}
if (! info->keep_memory || ! *pneeded)
{
if (! _bfd_coff_free_symbols (abfd))
- return false;
+ return FALSE;
}
- return true;
+ return TRUE;
}
/* Look through the symbols to see if this object file should be
included in the link. */
-static boolean
+static bfd_boolean
xcoff_link_check_ar_symbols (abfd, info, pneeded)
bfd *abfd;
struct bfd_link_info *info;
- boolean *pneeded;
+ bfd_boolean *pneeded;
{
bfd_size_type symesz;
bfd_byte *esym;
bfd_byte *esym_end;
- *pneeded = false;
+ *pneeded = FALSE;
+
+ if ((abfd->flags & DYNAMIC) != 0
+ && ! info->static_link
+ && info->hash->creator == abfd->xvec)
+ return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded);
symesz = bfd_coff_symesz (abfd);
esym = (bfd_byte *) obj_coff_external_syms (abfd);
struct bfd_link_hash_entry *h;
/* This symbol is externally visible, and is defined by this
- object file. */
+ object file. */
name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
+
if (name == NULL)
- return false;
- h = bfd_link_hash_lookup (info->hash, name, false, false, true);
+ return FALSE;
+ h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
/* We are only interested in symbols that are currently
undefined. If a symbol is currently known to be common,
defines it. We also don't bring in symbols to satisfy
undefined references in shared objects. */
if (h != (struct bfd_link_hash_entry *) NULL
- && h->type == bfd_link_hash_undefined)
+ && h->type == bfd_link_hash_undefined
+ && (info->hash->creator != abfd->xvec
+ || (((struct xcoff_link_hash_entry *) h)->flags
+ & XCOFF_DEF_DYNAMIC) == 0))
{
if (! (*info->callbacks->add_archive_element) (info, abfd, name))
- return false;
- *pneeded = true;
- return true;
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
}
}
}
/* We do not need this object file. */
- return true;
+ return TRUE;
}
-/* Add all the symbols from an object file to the hash table.
-
- XCOFF is a weird format. A normal XCOFF .o files will have three
- COFF sections--.text, .data, and .bss--but each COFF section will
- contain many csects. These csects are described in the symbol
- table. From the linker's point of view, each csect must be
- considered a section in its own right. For example, a TOC entry is
- handled as a small XMC_TC csect. The linker must be able to merge
- different TOC entries together, which means that it must be able to
- extract the XMC_TC csects from the .data section of the input .o
- file.
-
- From the point of view of our linker, this is, of course, a hideous
- nightmare. We cope by actually creating sections for each csect,
- and discarding the original sections. We then have to handle the
- relocation entries carefully, since the only way to tell which
- csect they belong to is to examine the address. */
+/* Look through the loader symbols to see if this dynamic object
+ should be included in the link. The native linker uses the loader
+ symbols, not the normal symbol table, so we do too. */
-static boolean
-xcoff_link_add_symbols (abfd, info)
+static bfd_boolean
+xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded)
bfd *abfd;
struct bfd_link_info *info;
+ bfd_boolean *pneeded;
{
- unsigned int n_tmask;
- unsigned int n_btshft;
- boolean default_copy;
- bfd_size_type symcount;
- struct xcoff_link_hash_entry **sym_hash;
- asection **csect_cache;
- bfd_size_type linesz;
- asection *sub;
- boolean keep_syms;
- asection *csect;
- unsigned int csect_index;
- asection *first_csect;
- bfd_size_type symesz;
- bfd_byte *esym;
- bfd_byte *esym_end;
- struct reloc_info_struct
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+ const char *strings;
+ bfd_byte *elsym, *elsymend;
+
+ *pneeded = FALSE;
+
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
{
- struct internal_reloc *relocs;
- asection **csects;
- bfd_byte *linenos;
- } *reloc_info = NULL;
+ /* There are no symbols, so don't try to include it. */
+ return TRUE;
+ }
- if ((abfd->flags & DYNAMIC) != 0
- && ! info->static_link)
- return xcoff_link_add_dynamic_symbols (abfd, info);
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return FALSE;
+ contents = coff_section_data (abfd, lsec)->contents;
- n_tmask = coff_data (abfd)->local_n_tmask;
- n_btshft = coff_data (abfd)->local_n_btshft;
+ bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
- /* Define macros so that ISFCN, et. al., macros work correctly. */
-#define N_TMASK n_tmask
-#define N_BTSHFT n_btshft
+ strings = (char *) contents + ldhdr.l_stoff;
+
+ elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
- /* We need to build a .loader section, so we do it here. This won't
- work if we're producing an XCOFF output file with no non dynamic
- XCOFF input files. FIXME. */
- if (xcoff_hash_table (info)->loader_section == NULL)
+ elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
+ for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd))
{
- asection *lsec;
+ struct internal_ldsym ldsym;
+ char nambuf[SYMNMLEN + 1];
+ const char *name;
+ struct bfd_link_hash_entry *h;
- lsec = bfd_make_section_anyway (abfd, ".loader");
- if (lsec == NULL)
- goto error_return;
- xcoff_hash_table (info)->loader_section = lsec;
- lsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
+
+ /* We are only interested in exported symbols. */
+ if ((ldsym.l_smtype & L_EXPORT) == 0)
+ continue;
+
+ if (ldsym._l._l_l._l_zeroes == 0)
+ name = strings + ldsym._l._l_l._l_offset;
+ else
+ {
+ memcpy (nambuf, ldsym._l._l_name, SYMNMLEN);
+ nambuf[SYMNMLEN] = '\0';
+ name = nambuf;
+ }
+
+ h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
+
+ /* We are only interested in symbols that are currently
+ undefined. At this point we know that we are using an XCOFF
+ hash table. */
+ if (h != NULL
+ && h->type == bfd_link_hash_undefined
+ && (((struct xcoff_link_hash_entry *) h)->flags
+ & XCOFF_DEF_DYNAMIC) == 0)
+ {
+ if (! (*info->callbacks->add_archive_element) (info, abfd, name))
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
+ }
}
- /* Likewise for the linkage section. */
- if (xcoff_hash_table (info)->linkage_section == NULL)
- {
- asection *lsec;
- lsec = bfd_make_section_anyway (abfd, ".gl");
- if (lsec == NULL)
- goto error_return;
- xcoff_hash_table (info)->linkage_section = lsec;
- lsec->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ /* We do not need this shared object. */
+
+ if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents)
+ {
+ free (coff_section_data (abfd, lsec)->contents);
+ coff_section_data (abfd, lsec)->contents = NULL;
}
- /* Likewise for the TOC section. */
- if (xcoff_hash_table (info)->toc_section == NULL)
+
+ return TRUE;
+}
+
+/* Returns the index of reloc in RELOCS with the least address greater
+ than or equal to ADDRESS. The relocs are sorted by address. */
+
+static bfd_size_type
+xcoff_find_reloc (relocs, count, address)
+ struct internal_reloc *relocs;
+ bfd_size_type count;
+ bfd_vma address;
+{
+ bfd_size_type min, max, this;
+
+ if (count < 2)
{
- asection *tsec;
+ if (count == 1 && relocs[0].r_vaddr < address)
+ return 1;
+ else
+ return 0;
+ }
- tsec = bfd_make_section_anyway (abfd, ".tc");
- if (tsec == NULL)
- goto error_return;
- xcoff_hash_table (info)->toc_section = tsec;
- tsec->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ min = 0;
+ max = count;
+
+ /* Do a binary search over (min,max]. */
+ while (min + 1 < max)
+ {
+ bfd_vma raddr;
+
+ this = (max + min) / 2;
+ raddr = relocs[this].r_vaddr;
+ if (raddr > address)
+ max = this;
+ else if (raddr < address)
+ min = this;
+ else
+ {
+ min = this;
+ break;
+ }
}
- /* Likewise for the .debug section. */
- if (xcoff_hash_table (info)->debug_section == NULL)
+
+ if (relocs[min].r_vaddr < address)
+ return min + 1;
+
+ while (min > 0
+ && relocs[min - 1].r_vaddr == address)
+ --min;
+
+ return min;
+}
+
+
+/* xcoff_link_create_extra_sections
+
+ Takes care of creating the .loader, .gl, .ds, .debug and sections. */
+
+static bfd_boolean
+xcoff_link_create_extra_sections(bfd * abfd, struct bfd_link_info *info)
+{
+
+ bfd_boolean return_value = FALSE;
+
+ if (info->hash->creator == abfd->xvec)
{
- asection *dsec;
- dsec = bfd_make_section_anyway (abfd, ".debug");
- if (dsec == NULL)
- goto error_return;
- xcoff_hash_table (info)->debug_section = dsec;
- dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ /* We need to build a .loader section, so we do it here. This
+ won't work if we're producing an XCOFF output file with no
+ XCOFF input files. FIXME. */
+
+ if (xcoff_hash_table (info)->loader_section == NULL)
+ {
+ asection *lsec;
+
+ lsec = bfd_make_section_anyway (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ goto end_return;
+ }
+ xcoff_hash_table (info)->loader_section = lsec;
+ lsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ }
+
+ /* Likewise for the linkage section. */
+ if (xcoff_hash_table (info)->linkage_section == NULL)
+ {
+ asection *lsec;
+
+ lsec = bfd_make_section_anyway (abfd, ".gl");
+ if (lsec == NULL)
+ {
+ goto end_return;
+ }
+
+ xcoff_hash_table (info)->linkage_section = lsec;
+ lsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY);
+ lsec->alignment_power = 2;
+ }
+
+ /* Likewise for the TOC section. */
+ if (xcoff_hash_table (info)->toc_section == NULL)
+ {
+ asection *tsec;
+
+ tsec = bfd_make_section_anyway (abfd, ".tc");
+ if (tsec == NULL)
+ {
+ goto end_return;
+ }
+
+ xcoff_hash_table (info)->toc_section = tsec;
+ tsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY);
+ tsec->alignment_power = 2;
+ }
+
+ /* Likewise for the descriptor section. */
+ if (xcoff_hash_table (info)->descriptor_section == NULL)
+ {
+ asection *dsec;
+
+ dsec = bfd_make_section_anyway (abfd, ".ds");
+ if (dsec == NULL)
+ {
+ goto end_return;
+ }
+
+ xcoff_hash_table (info)->descriptor_section = dsec;
+ dsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY);
+ dsec->alignment_power = 2;
+ }
+
+ /* Likewise for the .debug section. */
+ if (xcoff_hash_table (info)->debug_section == NULL
+ && info->strip != strip_all)
+ {
+ asection *dsec;
+
+ dsec = bfd_make_section_anyway (abfd, ".debug");
+ if (dsec == NULL)
+ {
+ goto end_return;
+ }
+ xcoff_hash_table (info)->debug_section = dsec;
+ dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ }
+ }
+
+ return_value = TRUE;
+
+ end_return:
+
+ return return_value;
+}
+
+/* Add all the symbols from an object file to the hash table.
+
+ XCOFF is a weird format. A normal XCOFF .o files will have three
+ COFF sections--.text, .data, and .bss--but each COFF section will
+ contain many csects. These csects are described in the symbol
+ table. From the linker's point of view, each csect must be
+ considered a section in its own right. For example, a TOC entry is
+ handled as a small XMC_TC csect. The linker must be able to merge
+ different TOC entries together, which means that it must be able to
+ extract the XMC_TC csects from the .data section of the input .o
+ file.
+
+ From the point of view of our linker, this is, of course, a hideous
+ nightmare. We cope by actually creating sections for each csect,
+ and discarding the original sections. We then have to handle the
+ relocation entries carefully, since the only way to tell which
+ csect they belong to is to examine the address. */
+
+static bfd_boolean
+xcoff_link_add_symbols (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ unsigned int n_tmask;
+ unsigned int n_btshft;
+ bfd_boolean default_copy;
+ bfd_size_type symcount;
+ struct xcoff_link_hash_entry **sym_hash;
+ asection **csect_cache;
+ bfd_size_type linesz;
+ asection *o;
+ asection *last_real;
+ bfd_boolean keep_syms;
+ asection *csect;
+ unsigned int csect_index;
+ asection *first_csect;
+ bfd_size_type symesz;
+ bfd_byte *esym;
+ bfd_byte *esym_end;
+ struct reloc_info_struct
+ {
+ struct internal_reloc *relocs;
+ asection **csects;
+ bfd_byte *linenos;
+ } *reloc_info = NULL;
+ bfd_size_type amt;
+
+ keep_syms = obj_coff_keep_syms (abfd);
+
+ if ((abfd->flags & DYNAMIC) != 0
+ && ! info->static_link)
+ {
+ if (! xcoff_link_add_dynamic_symbols (abfd, info))
+ return FALSE;
}
+ /* create the loader, toc, gl, ds and debug sections, if needed */
+ if (! xcoff_link_create_extra_sections (abfd, info))
+ goto error_return;
+
+ if ((abfd->flags & DYNAMIC) != 0
+ && ! info->static_link)
+ return TRUE;
+
+ n_tmask = coff_data (abfd)->local_n_tmask;
+ n_btshft = coff_data (abfd)->local_n_btshft;
+
+ /* Define macros so that ISFCN, et. al., macros work correctly. */
+#define N_TMASK n_tmask
+#define N_BTSHFT n_btshft
+
if (info->keep_memory)
- default_copy = false;
+ default_copy = FALSE;
else
- default_copy = true;
+ default_copy = TRUE;
symcount = obj_raw_syment_count (abfd);
/* We keep a list of the linker hash table entries that correspond
to each external symbol. */
- sym_hash = ((struct xcoff_link_hash_entry **)
- bfd_alloc (abfd,
- (symcount
- * sizeof (struct xcoff_link_hash_entry *))));
+ amt = symcount * sizeof (struct xcoff_link_hash_entry *);
+ sym_hash = (struct xcoff_link_hash_entry **) bfd_zalloc (abfd, amt);
if (sym_hash == NULL && symcount != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash;
- memset (sym_hash, 0,
- (size_t) symcount * sizeof (struct xcoff_link_hash_entry *));
/* Because of the weird stuff we are doing with XCOFF csects, we can
not easily determine which section a symbol is in, so we store
the information in the tdata for the input file. */
- csect_cache = ((asection **)
- bfd_alloc (abfd, symcount * sizeof (asection *)));
+ amt = symcount * sizeof (asection *);
+ csect_cache = (asection **) bfd_zalloc (abfd, amt);
if (csect_cache == NULL && symcount != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_data (abfd)->csects = csect_cache;
- memset (csect_cache, 0, (size_t) symcount * sizeof (asection *));
/* While splitting sections into csects, we need to assign the
relocs correctly. The relocs and the csects must both be in
order by VMA within a given section, so we handle this by
scanning along the relocs as we process the csects. We index
into reloc_info using the section target_index. */
- reloc_info = ((struct reloc_info_struct *)
- malloc ((abfd->section_count + 1)
- * sizeof (struct reloc_info_struct)));
+ amt = abfd->section_count + 1;
+ amt *= sizeof (struct reloc_info_struct);
+ reloc_info = (struct reloc_info_struct *) bfd_zmalloc (amt);
if (reloc_info == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- memset ((PTR) reloc_info, 0,
- (abfd->section_count + 1) * sizeof (struct reloc_info_struct));
+ goto error_return;
/* Read in the relocs and line numbers for each section. */
linesz = bfd_coff_linesz (abfd);
- for (sub = abfd->sections; sub != NULL; sub = sub->next)
+ last_real = NULL;
+ for (o = abfd->sections; o != NULL; o = o->next)
{
- if ((sub->flags & SEC_RELOC) != 0)
+
+ last_real = o;
+ if ((o->flags & SEC_RELOC) != 0)
{
- reloc_info[sub->target_index].relocs =
- xcoff_read_internal_relocs (abfd, sub, true, (bfd_byte *) NULL,
- false, (struct internal_reloc *) NULL);
- reloc_info[sub->target_index].csects =
- (asection **) malloc (sub->reloc_count * sizeof (asection *));
- if (reloc_info[sub->target_index].csects == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- memset (reloc_info[sub->target_index].csects, 0,
- sub->reloc_count * sizeof (asection *));
+
+ reloc_info[o->target_index].relocs =
+ xcoff_read_internal_relocs (abfd, o, TRUE, (bfd_byte *) NULL,
+ FALSE, (struct internal_reloc *) NULL);
+ amt = o->reloc_count;
+ amt *= sizeof (asection *);
+ reloc_info[o->target_index].csects = (asection **) bfd_zmalloc (amt);
+ if (reloc_info[o->target_index].csects == NULL)
+ goto error_return;
}
if ((info->strip == strip_none || info->strip == strip_some)
- && sub->lineno_count > 0)
+ && o->lineno_count > 0)
{
+
bfd_byte *linenos;
- linenos = (bfd_byte *) malloc (sub->lineno_count * linesz);
+ amt = linesz * o->lineno_count;
+ linenos = (bfd_byte *) bfd_malloc (amt);
if (linenos == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- reloc_info[sub->target_index].linenos = linenos;
- if (bfd_seek (abfd, sub->line_filepos, SEEK_SET) != 0
- || (bfd_read (linenos, linesz, sub->lineno_count, abfd)
- != linesz * sub->lineno_count))
goto error_return;
+ reloc_info[o->target_index].linenos = linenos;
+ if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0
+ || bfd_bread (linenos, amt, abfd) != amt)
+ goto error_return;
+
}
}
/* Don't let the linker relocation routines discard the symbols. */
- keep_syms = obj_coff_keep_syms (abfd);
- obj_coff_keep_syms (abfd) = true;
+ obj_coff_keep_syms (abfd) = TRUE;
csect = NULL;
csect_index = 0;
BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
esym = (bfd_byte *) obj_coff_external_syms (abfd);
esym_end = esym + symcount * symesz;
+
while (esym < esym_end)
{
struct internal_syment sym;
bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
/* In this pass we are only interested in symbols with csect
- information. */
+ information. */
if (sym.n_sclass != C_EXT && sym.n_sclass != C_HIDEXT)
{
+
+ /* Set csect_cache,
+ Normally csect is a .pr, .rw etc. created in the loop
+ If C_FILE or first time, handle special
+
+ Advance esym, sym_hash, csect_hash ptr's
+ Keep track of the last_symndx for the current file. */
if (sym.n_sclass == C_FILE && csect != NULL)
{
xcoff_section_data (abfd, csect)->last_symndx =
esym += (sym.n_numaux + 1) * symesz;
sym_hash += sym.n_numaux + 1;
csect_cache += sym.n_numaux + 1;
+
continue;
}
name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
+
if (name == NULL)
goto error_return;
/* If this symbol has line number information attached to it,
- and we're not stripping it, count the number of entries and
- add them to the count for this csect. In the final link pass
- we are going to attach line number information by symbol,
- rather than by section, in order to more easily handle
- garbage collection. */
+ and we're not stripping it, count the number of entries and
+ add them to the count for this csect. In the final link pass
+ we are going to attach line number information by symbol,
+ rather than by section, in order to more easily handle
+ garbage collection. */
if ((info->strip == strip_none || info->strip == strip_some)
&& sym.n_numaux > 1
&& csect != NULL
&& ISFCN (sym.n_type))
{
+
union internal_auxent auxlin;
bfd_coff_swap_aux_in (abfd, (PTR) (esym + symesz),
sym.n_type, sym.n_sclass,
0, sym.n_numaux, (PTR) &auxlin);
+
if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0)
{
asection *enclosing;
- bfd_size_type linoff;
+ bfd_signed_vma linoff;
enclosing = xcoff_section_data (abfd, csect)->enclosing;
+ if (enclosing == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: `%s' has line numbers but no enclosing section"),
+ bfd_archive_filename (abfd), name);
+ bfd_set_error (bfd_error_bad_value);
+ goto error_return;
+ }
linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr
- enclosing->line_filepos);
- if (linoff < enclosing->lineno_count * linesz)
+ /* explicit cast to bfd_signed_vma for compiler */
+ if (linoff < (bfd_signed_vma) (enclosing->lineno_count * linesz))
{
struct internal_lineno lin;
bfd_byte *linpstart;
}
csect->lineno_count += (linp - linpstart) / linesz;
/* The setting of line_filepos will only be
- useful if all the line number entries for a
- csect are contiguous; this only matters for
- error reporting. */
+ useful if all the line number entries for a
+ csect are contiguous; this only matters for
+ error reporting. */
if (csect->line_filepos == 0)
csect->line_filepos =
auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr;
if (sym.n_numaux == 0)
{
(*_bfd_error_handler)
- ("%s: class %d symbol `%s' has no aux entries",
- bfd_get_filename (abfd), sym.n_sclass, name);
+ (_("%s: class %d symbol `%s' has no aux entries"),
+ bfd_archive_filename (abfd), sym.n_sclass, name);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
{
default:
(*_bfd_error_handler)
- ("%s: symbol `%s' has unrecognized csect type %d",
- bfd_get_filename (abfd), name, smtyp);
+ (_("%s: symbol `%s' has unrecognized csect type %d"),
+ bfd_archive_filename (abfd), name, smtyp);
bfd_set_error (bfd_error_bad_value);
goto error_return;
|| aux.x_csect.x_scnlen.l != 0)
{
(*_bfd_error_handler)
- ("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d",
- bfd_get_filename (abfd), name, sym.n_sclass, sym.n_scnum,
+ (_("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d"),
+ bfd_archive_filename (abfd), name, sym.n_sclass, sym.n_scnum,
aux.x_csect.x_scnlen.l);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
- section = bfd_und_section_ptr;
+
+ /* An XMC_XO external reference is actually a reference to
+ an absolute location. */
+ if (aux.x_csect.x_smclas != XMC_XO)
+ section = bfd_und_section_ptr;
+ else
+ {
+ section = bfd_abs_section_ptr;
+ value = sym.n_value;
+ }
break;
case XTY_SD:
/* This is a csect definition. */
-
if (csect != NULL)
{
xcoff_section_data (abfd, csect)->last_symndx =
- ((esym
- - (bfd_byte *) obj_coff_external_syms (abfd))
- / symesz);
+ ((esym - (bfd_byte *) obj_coff_external_syms (abfd)) / symesz);
}
csect = NULL;
- csect_index = -1;
+ csect_index = -(unsigned) 1;
/* When we see a TOC anchor, we record the TOC value. */
if (aux.x_csect.x_smclas == XMC_TC0)
|| aux.x_csect.x_scnlen.l != 0)
{
(*_bfd_error_handler)
- ("%s: XMC_TC0 symbol `%s' is class %d scnlen %d",
- bfd_get_filename (abfd), name, sym.n_sclass,
+ (_("%s: XMC_TC0 symbol `%s' is class %d scnlen %d"),
+ bfd_archive_filename (abfd), name, sym.n_sclass,
aux.x_csect.x_scnlen.l);
bfd_set_error (bfd_error_bad_value);
goto error_return;
/* We must merge TOC entries for the same symbol. We can
merge two TOC entries if they are both C_HIDEXT, they
- both have the same name, they are both 4 bytes long, and
+ both have the same name, they are both 4 or 8 bytes long, and
they both have a relocation table entry for an external
symbol with the same name. Unfortunately, this means
- that we must look through the relocations. Ick. */
+ that we must look through the relocations. Ick.
+
+ Logic for 32 bit vs 64 bit.
+ 32 bit has a csect length of 4 for TOC
+ 64 bit has a csect length of 8 for TOC
+
+ The conditions to get past the if-check are not that bad.
+ They are what is used to create the TOC csects in the first
+ place. */
if (aux.x_csect.x_smclas == XMC_TC
&& sym.n_sclass == C_HIDEXT
- && aux.x_csect.x_scnlen.l == 4
- && info->hash->creator == abfd->xvec)
+ && info->hash->creator == abfd->xvec
+ && ((bfd_xcoff_is_xcoff32 (abfd)
+ && aux.x_csect.x_scnlen.l == 4)
+ || (bfd_xcoff_is_xcoff64 (abfd)
+ && aux.x_csect.x_scnlen.l == 8)))
{
asection *enclosing;
+ struct internal_reloc *relocs;
bfd_size_type relindx;
struct internal_reloc *rel;
- asection **rel_csect;
enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum);
if (enclosing == NULL)
goto error_return;
- /* XCOFF requires that relocs be sorted by address, so
- we could do a binary search here. FIXME. */
- rel = reloc_info[enclosing->target_index].relocs;
- rel_csect = reloc_info[enclosing->target_index].csects;
- for (relindx = 0;
- relindx < enclosing->reloc_count;
- relindx++, rel++, rel_csect++)
- {
- if (*rel_csect == NULL
- && rel->r_vaddr == (bfd_vma) sym.n_value
- && rel->r_size == 31
- && rel->r_type == R_POS)
- break;
- }
- if (relindx < enclosing->reloc_count)
+ relocs = reloc_info[enclosing->target_index].relocs;
+ amt = enclosing->reloc_count;
+ relindx = xcoff_find_reloc (relocs, amt, sym.n_value);
+ rel = relocs + relindx;
+
+ /* 32 bit R_POS r_size is 31
+ 64 bit R_POS r_size is 63 */
+ if (relindx < enclosing->reloc_count
+ && rel->r_vaddr == (bfd_vma) sym.n_value
+ && rel->r_type == R_POS
+ && ((bfd_xcoff_is_xcoff32 (abfd)
+ && rel->r_size == 31)
+ || (bfd_xcoff_is_xcoff64 (abfd)
+ && rel->r_size == 63)))
{
bfd_byte *erelsym;
+
struct internal_syment relsym;
erelsym = ((bfd_byte *) obj_coff_external_syms (abfd)
{
const char *relname;
char relbuf[SYMNMLEN + 1];
- boolean copy;
+ bfd_boolean copy;
struct xcoff_link_hash_entry *h;
/* At this point we know that the TOC entry is
for an externally visible symbol. */
+
relname = _bfd_coff_internal_syment_name (abfd, &relsym,
relbuf);
if (relname == NULL)
goto error_return;
- copy = (! info->keep_memory
- || relsym._n._n_n._n_zeroes != 0
- || relsym._n._n_n._n_offset == 0);
- h = xcoff_link_hash_lookup (xcoff_hash_table (info),
- relname, true, copy, false);
- if (h == NULL)
- goto error_return;
- /* At this point h->root.type could be
- bfd_link_hash_new. That should be OK, since
- we know for sure that we will come across
- this symbol as we step through the file. */
+ /* We only merge TOC entries if the TC name is
+ the same as the symbol name. This handles
+ the normal case, but not common cases like
+ SYM.P4 which gcc generates to store SYM + 4
+ in the TOC. FIXME. */
- /* We store h in *sym_hash for the convenience
- of the relocate_section function. */
- *sym_hash = h;
-
- if (h->toc_section != NULL)
+ if (strcmp (name, relname) == 0)
{
- /* We already have a TOC entry for this
- symbol, so we can just ignore this one. */
- *rel_csect = bfd_und_section_ptr;
- break;
- }
+ copy = (! info->keep_memory
+ || relsym._n._n_n._n_zeroes != 0
+ || relsym._n._n_n._n_offset == 0);
+ h = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ relname, TRUE, copy,
+ FALSE);
+ if (h == NULL)
+ goto error_return;
+
+ /* At this point h->root.type could be
+ bfd_link_hash_new. That should be OK,
+ since we know for sure that we will come
+ across this symbol as we step through the
+ file. */
+
+ /* We store h in *sym_hash for the
+ convenience of the relocate_section
+ function. */
+ *sym_hash = h;
+
+ if (h->toc_section != NULL)
+ {
+ asection **rel_csects;
+
+ /* We already have a TOC entry for this
+ symbol, so we can just ignore this
+ one. */
+ rel_csects =
+ reloc_info[enclosing->target_index].csects;
+ rel_csects[relindx] = bfd_und_section_ptr;
+ break;
+ }
- /* We are about to create a TOC entry for this
- symbol. */
- set_toc = h;
- }
- }
- }
+ /* We are about to create a TOC entry for
+ this symbol. */
+ set_toc = h;
+ } /* merge toc reloc */
+ } /* c_ext */
+ } /* reloc */
+ } /* merge toc */
- /* We need to create a new section. We get the name from
- the csect storage mapping class, so that the linker can
- accumulate similar csects together. */
{
- static const char *csect_name_by_class[] =
- {
- ".pr", ".ro", ".db", ".tc", ".ua", ".rw", ".gl", ".xo",
- ".sv", ".bs", ".ds", ".uc", ".ti", ".tb", NULL, ".tc0",
- ".td"
- };
- const char *csect_name;
+
asection *enclosing;
- struct internal_reloc *rel;
- bfd_size_type relindx;
- asection **rel_csect;
- if ((aux.x_csect.x_smclas >=
- sizeof csect_name_by_class / sizeof csect_name_by_class[0])
- || csect_name_by_class[aux.x_csect.x_smclas] == NULL)
+ /* We need to create a new section. We get the name from
+ the csect storage mapping class, so that the linker can
+ accumulate similar csects together. */
+
+ csect = bfd_xcoff_create_csect_from_smclas(abfd, &aux, name);
+ if (NULL == csect)
{
- (*_bfd_error_handler)
- ("%s: symbol `%s' has unrecognized smclas %d",
- bfd_get_filename (abfd), name, aux.x_csect.x_smclas);
- bfd_set_error (bfd_error_bad_value);
goto error_return;
}
- csect_name = csect_name_by_class[aux.x_csect.x_smclas];
- csect = bfd_make_section_anyway (abfd, csect_name);
- if (csect == NULL)
- goto error_return;
+ /* The enclosing section is the main section : .data, .text
+ or .bss that the csect is coming from. */
enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum);
if (enclosing == NULL)
goto error_return;
- if ((bfd_vma) sym.n_value < enclosing->vma
- || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l
- > enclosing->vma + enclosing->_raw_size))
+
+ if (! bfd_is_abs_section (enclosing)
+ && ((bfd_vma) sym.n_value < enclosing->vma
+ || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l
+ > enclosing->vma + enclosing->_raw_size)))
{
(*_bfd_error_handler)
- ("%s: csect `%s' not in enclosing section",
- bfd_get_filename (abfd), name);
+ (_("%s: csect `%s' not in enclosing section"),
+ bfd_archive_filename (abfd), name);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
/* Record the enclosing section in the tdata for this new
section. */
- csect->used_by_bfd =
- ((struct coff_section_tdata *)
- bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ amt = sizeof (struct coff_section_tdata);
+ csect->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
if (csect->used_by_bfd == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- coff_section_data (abfd, csect)->tdata =
- bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata));
+ goto error_return;
+ amt = sizeof (struct xcoff_section_tdata);
+ coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt);
if (coff_section_data (abfd, csect)->tdata == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_section_data (abfd, csect)->enclosing = enclosing;
+ xcoff_section_data (abfd, csect)->lineno_count =
+ enclosing->lineno_count;
- /* XCOFF requires that relocs be sorted by address, so we
- could do a binary search here. FIXME. (XCOFF
- unfortunately does not require that symbols be sorted
- by address, or this would be a simple merge). */
- rel = reloc_info[enclosing->target_index].relocs;
- rel_csect = reloc_info[enclosing->target_index].csects;
- for (relindx = 0;
- relindx < enclosing->reloc_count;
- relindx++, rel++, rel_csect++)
+ if (enclosing->owner == abfd)
{
- if (*rel_csect == NULL
- && rel->r_vaddr >= csect->vma
- && rel->r_vaddr < csect->vma + csect->_raw_size)
+ struct internal_reloc *relocs;
+ bfd_size_type relindx;
+ struct internal_reloc *rel;
+ asection **rel_csect;
+
+ relocs = reloc_info[enclosing->target_index].relocs;
+ amt = enclosing->reloc_count;
+ relindx = xcoff_find_reloc (relocs, amt, csect->vma);
+
+ rel = relocs + relindx;
+ rel_csect = (reloc_info[enclosing->target_index].csects
+ + relindx);
+
+ csect->rel_filepos = (enclosing->rel_filepos
+ + relindx * bfd_coff_relsz (abfd));
+ while (relindx < enclosing->reloc_count
+ && *rel_csect == NULL
+ && rel->r_vaddr < csect->vma + csect->_raw_size)
{
- csect->rel_filepos = (enclosing->rel_filepos
- + relindx * bfd_coff_relsz (abfd));
- break;
+
+ *rel_csect = csect;
+ csect->flags |= SEC_RELOC;
+ ++csect->reloc_count;
+ ++relindx;
+ ++rel;
+ ++rel_csect;
}
}
- while (relindx < enclosing->reloc_count
- && *rel_csect == NULL
- && rel->r_vaddr >= csect->vma
- && rel->r_vaddr < csect->vma + csect->_raw_size)
- {
- *rel_csect = csect;
- csect->flags |= SEC_RELOC;
- ++csect->reloc_count;
- ++relindx;
- ++rel;
- ++rel_csect;
- }
/* There are a number of other fields and section flags
which we do not bother to set. */
/* If this is a TOC section for a symbol, record it. */
if (set_toc != NULL)
- {
- set_toc->toc_section = csect;
- set_toc->toc_offset = 0;
- }
+ set_toc->toc_section = csect;
}
break;
case XTY_LD:
/* This is a label definition. The x_scnlen field is the
- symbol index of the csect. I believe that this must
- always follow the appropriate XTY_SD symbol, so I will
- insist on it. */
+ symbol index of the csect. Usually the XTY_LD symbol will
+ follow its appropriate XTY_SD symbol. The .set pseudo op can
+ cause the XTY_LD to not follow the XTY_SD symbol. */
{
- boolean bad;
+ bfd_boolean bad;
- bad = false;
+ bad = FALSE;
if (aux.x_csect.x_scnlen.l < 0
|| (aux.x_csect.x_scnlen.l
>= esym - (bfd_byte *) obj_coff_external_syms (abfd)))
- bad = true;
+ bad = TRUE;
if (! bad)
{
section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.l];
if (section == NULL
|| (section->flags & SEC_HAS_CONTENTS) == 0)
- bad = true;
+ bad = TRUE;
}
if (bad)
{
(*_bfd_error_handler)
- ("%s: misplaced XTY_LD `%s'",
- bfd_get_filename (abfd), name);
+ (_("%s: misplaced XTY_LD `%s'"),
+ bfd_archive_filename (abfd), name);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
-
+ csect = section;
value = sym.n_value - csect->vma;
}
break;
case XTY_CM:
/* This is an unitialized csect. We could base the name on
- the storage mapping class, but we don't bother. If this
- csect is externally visible, it is a common symbol. */
+ the storage mapping class, but we don't bother except for
+ an XMC_TD symbol. If this csect is externally visible,
+ it is a common symbol. We put XMC_TD symbols in sections
+ named .tocbss, and rely on the linker script to put that
+ in the TOC area. */
if (csect != NULL)
{
/ symesz);
}
- csect = bfd_make_section_anyway (abfd, ".bss");
+ if (aux.x_csect.x_smclas == XMC_TD)
+ {
+ /* The linker script puts the .td section in the data
+ section after the .tc section. */
+ csect = bfd_make_section_anyway (abfd, ".td");
+
+ }
+ else
+ {
+ csect = bfd_make_section_anyway (abfd, ".bss");
+ }
if (csect == NULL)
goto error_return;
- csect->vma = 0;
+ csect->vma = sym.n_value;
csect->_raw_size = aux.x_csect.x_scnlen.l;
csect->flags |= SEC_ALLOC;
csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp);
- (bfd_byte *) obj_coff_external_syms (abfd))
/ symesz);
- csect->used_by_bfd =
- ((struct coff_section_tdata *)
- bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ amt = sizeof (struct coff_section_tdata);
+ csect->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
if (csect->used_by_bfd == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- coff_section_data (abfd, csect)->tdata =
- bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata));
+ goto error_return;
+ amt = sizeof (struct xcoff_section_tdata);
+ coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt);
if (coff_section_data (abfd, csect)->tdata == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_section_data (abfd, csect)->first_symndx = csect_index;
if (first_csect == NULL)
if (sym.n_sclass == C_EXT)
{
csect->flags |= SEC_IS_COMMON;
+ csect->_raw_size = 0;
section = csect;
value = aux.x_csect.x_scnlen.l;
}
break;
}
- /* Now we have enough information to add the symbol to the
- linker hash table. */
-
- if (sym.n_sclass == C_EXT)
+ /* Check for magic symbol names. */
+ if ((smtyp == XTY_SD || smtyp == XTY_CM)
+ && aux.x_csect.x_smclas != XMC_TC
+ && aux.x_csect.x_smclas != XMC_TD)
{
- boolean copy;
- BFD_ASSERT (section != NULL);
-
- /* We must copy the name into memory if we got it from the
- syment itself, rather than the string table. */
- copy = default_copy;
- if (sym._n._n_n._n_zeroes != 0
- || sym._n._n_n._n_offset == 0)
- copy = true;
+ int i = -1;
- if (info->hash->creator == abfd->xvec)
+ if (name[0] == '_')
{
- /* If we are statically linking a shared object, it is
- OK for symbol redefinitions to occur. I can't figure
- out just what the XCOFF linker is doing, but
- something like this is required for -bnso to work. */
- *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info),
- name, true, copy, false);
- if (*sym_hash == NULL)
- goto error_return;
+ if (strcmp (name, "_text") == 0)
+ i = XCOFF_SPECIAL_SECTION_TEXT;
+ else if (strcmp (name, "_etext") == 0)
+ i = XCOFF_SPECIAL_SECTION_ETEXT;
+ else if (strcmp (name, "_data") == 0)
+ i = XCOFF_SPECIAL_SECTION_DATA;
+ else if (strcmp (name, "_edata") == 0)
+ i = XCOFF_SPECIAL_SECTION_EDATA;
+ else if (strcmp (name, "_end") == 0)
+ i = XCOFF_SPECIAL_SECTION_END;
+ }
+ else if (name[0] == 'e' && strcmp (name, "end") == 0)
+ {
+ i = XCOFF_SPECIAL_SECTION_END2;
+ }
+
+ if (i != -1)
+ {
+ xcoff_hash_table (info)->special_sections[i] = csect;
+ }
+ }
+
+ /* Now we have enough information to add the symbol to the
+ linker hash table. */
+
+ if (sym.n_sclass == C_EXT)
+ {
+ bfd_boolean copy;
+
+ BFD_ASSERT (section != NULL);
+
+ /* We must copy the name into memory if we got it from the
+ syment itself, rather than the string table. */
+ copy = default_copy;
+ if (sym._n._n_n._n_zeroes != 0
+ || sym._n._n_n._n_offset == 0)
+ copy = TRUE;
+
+ /* The AIX linker appears to only detect multiple symbol
+ definitions when there is a reference to the symbol. If
+ a symbol is defined multiple times, and the only
+ references are from the same object file, the AIX linker
+ appears to permit it. It does not merge the different
+ definitions, but handles them independently. On the
+ other hand, if there is a reference, the linker reports
+ an error.
+
+ This matters because the AIX <net/net_globals.h> header
+ file actually defines an initialized array, so we have to
+ actually permit that to work.
+
+ Just to make matters even more confusing, the AIX linker
+ appears to permit multiple symbol definitions whenever
+ the second definition is in an archive rather than an
+ object file. This may be a consequence of the manner in
+ which it handles archives: I think it may load the entire
+ archive in as separate csects, and then let garbage
+ collection discard symbols.
+
+ We also have to handle the case of statically linking a
+ shared object, which will cause symbol redefinitions,
+ although this is an easier case to detect. */
+
+ if (info->hash->creator == abfd->xvec)
+ {
+ if (! bfd_is_und_section (section))
+ {
+ *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ name, TRUE, copy, FALSE);
+ }
+ else
+ {
+ /* Make a copy of the symbol name to prevent problems with
+ merging symbols. */
+ *sym_hash = ((struct xcoff_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (abfd, info, name,
+ TRUE, TRUE,
+ FALSE));
+ }
+ if (*sym_hash == NULL)
+ goto error_return;
if (((*sym_hash)->root.type == bfd_link_hash_defined
|| (*sym_hash)->root.type == bfd_link_hash_defweak)
&& ! bfd_is_und_section (section)
&& ! bfd_is_com_section (section))
{
- if ((abfd->flags & DYNAMIC) != 0)
+ /* This is a second definition of a defined symbol. */
+ if ((abfd->flags & DYNAMIC) != 0
+ && ((*sym_hash)->smclas != XMC_GL
+ || aux.x_csect.x_smclas == XMC_GL
+ || ((*sym_hash)->root.u.def.section->owner->flags
+ & DYNAMIC) == 0))
{
+ /* The new symbol is from a shared library, and
+ either the existing symbol is not global
+ linkage code or this symbol is global linkage
+ code. If the existing symbol is global
+ linkage code and the new symbol is not, then
+ we want to use the new symbol. */
section = bfd_und_section_ptr;
value = 0;
}
else if (((*sym_hash)->root.u.def.section->owner->flags
& DYNAMIC) != 0)
{
+ /* The existing symbol is from a shared library.
+ Replace it. */
(*sym_hash)->root.type = bfd_link_hash_undefined;
(*sym_hash)->root.u.undef.abfd =
(*sym_hash)->root.u.def.section->owner;
}
+ else if (abfd->my_archive != NULL)
+ {
+ /* This is a redefinition in an object contained
+ in an archive. Just ignore it. See the
+ comment above. */
+ section = bfd_und_section_ptr;
+ value = 0;
+ }
+ else if ((*sym_hash)->root.und_next != NULL
+ || info->hash->undefs_tail == &(*sym_hash)->root)
+ {
+ /* This symbol has been referenced. In this
+ case, we just continue and permit the
+ multiple definition error. See the comment
+ above about the behaviour of the AIX linker. */
+ }
+ else if ((*sym_hash)->smclas == aux.x_csect.x_smclas)
+ {
+ /* The symbols are both csects of the same
+ class. There is at least a chance that this
+ is a semi-legitimate redefinition. */
+ section = bfd_und_section_ptr;
+ value = 0;
+ (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED;
+ }
+ }
+ else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0
+ && ((*sym_hash)->root.type == bfd_link_hash_defined
+ || (*sym_hash)->root.type == bfd_link_hash_defweak)
+ && (bfd_is_und_section (section)
+ || bfd_is_com_section (section)))
+ {
+ /* This is a reference to a multiply defined symbol.
+ Report the error now. See the comment above
+ about the behaviour of the AIX linker. We could
+ also do this with warning symbols, but I'm not
+ sure the XCOFF linker is wholly prepared to
+ handle them, and that would only be a warning,
+ not an error. */
+ if (! ((*info->callbacks->multiple_definition)
+ (info, (*sym_hash)->root.root.string,
+ (bfd *) NULL, (asection *) NULL, (bfd_vma) 0,
+ (*sym_hash)->root.u.def.section->owner,
+ (*sym_hash)->root.u.def.section,
+ (*sym_hash)->root.u.def.value)))
+ goto error_return;
+ /* Try not to give this error too many times. */
+ (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED;
}
}
+ /* _bfd_generic_link_add_one_symbol may call the linker to
+ generate an error message, and the linker may try to read
+ the symbol table to give a good error. Right now, the
+ line numbers are in an inconsistent state, since they are
+ counted both in the real sections and in the new csects.
+ We need to leave the count in the real sections so that
+ the linker can report the line number of the error
+ correctly, so temporarily clobber the link to the csects
+ so that the linker will not try to read the line numbers
+ a second time from the csects. */
+ BFD_ASSERT (last_real->next == first_csect);
+ last_real->next = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, flags, section, value,
- (const char *) NULL, copy, false,
+ (const char *) NULL, copy, TRUE,
(struct bfd_link_hash_entry **) sym_hash)))
goto error_return;
+ last_real->next = first_csect;
+
+ if (smtyp == XTY_CM)
+ {
+ if ((*sym_hash)->root.type != bfd_link_hash_common
+ || (*sym_hash)->root.u.c.p->section != csect)
+ {
+ /* We don't need the common csect we just created. */
+ csect->_raw_size = 0;
+ }
+ else
+ {
+ (*sym_hash)->root.u.c.p->alignment_power
+ = csect->alignment_power;
+ }
+ }
- if (info->hash->creator == abfd->xvec)
+ if (info->hash->creator == abfd->xvec)
{
int flag;
flag = XCOFF_DEF_REGULAR;
(*sym_hash)->flags |= flag;
- if ((*sym_hash)->smclas == XMC_UA)
+ if ((*sym_hash)->smclas == XMC_UA
+ || flag == XCOFF_DEF_REGULAR)
(*sym_hash)->smclas = aux.x_csect.x_smclas;
}
}
csect_cache += sym.n_numaux + 1;
}
+ BFD_ASSERT (last_real == NULL || last_real->next == first_csect);
+
/* Make sure that we have seen all the relocs. */
- for (sub = abfd->sections; sub != first_csect; sub = sub->next)
+ for (o = abfd->sections; o != first_csect; o = o->next)
{
- /* Reset the section size, since the data is now attached to the
- csects. Don't reset the size of the .debug section, since we
- need to read it below in bfd_xcoff_size_dynamic_sections. */
- if (strcmp (bfd_get_section_name (abfd, sub), ".debug") != 0)
- sub->_raw_size = 0;
+ /* Reset the section size and the line number count, since the
+ data is now attached to the csects. Don't reset the size of
+ the .debug section, since we need to read it below in
+ bfd_xcoff_size_dynamic_sections. */
+ if (strcmp (bfd_get_section_name (abfd, o), ".debug") != 0)
+ o->_raw_size = 0;
+ o->lineno_count = 0;
- if ((sub->flags & SEC_RELOC) != 0)
+ if ((o->flags & SEC_RELOC) != 0)
{
bfd_size_type i;
struct internal_reloc *rel;
asection **rel_csect;
- rel = reloc_info[sub->target_index].relocs;
- rel_csect = reloc_info[sub->target_index].csects;
- for (i = 0; i < sub->reloc_count; i++, rel++, rel_csect++)
+ rel = reloc_info[o->target_index].relocs;
+ rel_csect = reloc_info[o->target_index].csects;
+
+ for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++)
{
+
if (*rel_csect == NULL)
{
(*_bfd_error_handler)
- ("%s: reloc %s:%d not in csect",
- bfd_get_filename (abfd), sub->name, i);
+ (_("%s: reloc %s:%d not in csect"),
+ bfd_archive_filename (abfd), o->name, i);
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
- /* We need to copy all relocs which are not PC relative
- and not TOC relative into the .loader section.
-
- We also identify all symbols which are called, so
- that we can create glue code for calls to functions
- imported from dynamic objects. */
-
- if (info->hash->creator == abfd->xvec
- && *rel_csect != bfd_und_section_ptr)
+ /* We identify all symbols which are called, so that we
+ can create glue code for calls to functions imported
+ from dynamic objects. */
+ if (info->hash->creator == abfd->xvec
+ && *rel_csect != bfd_und_section_ptr
+ && (rel->r_type == R_BR
+ || rel->r_type == R_RBR)
+ && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL)
{
struct xcoff_link_hash_entry *h;
- switch (rel->r_type)
+ h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx];
+ h->flags |= XCOFF_CALLED;
+ /* If the symbol name starts with a period, it is
+ the code of a function. If the symbol is
+ currently undefined, then add an undefined symbol
+ for the function descriptor. This should do no
+ harm, because any regular object that defines the
+ function should also define the function
+ descriptor. It helps, because it means that we
+ will identify the function descriptor with a
+ dynamic object if a dynamic object defines it. */
+ if (h->root.root.string[0] == '.'
+ && h->descriptor == NULL)
{
- default:
- break;
- case R_POS:
- case R_NEG:
- case R_RL:
- case R_RLA:
- ++xcoff_hash_table (info)->ldrel_count;
- ++xcoff_section_data (abfd, *rel_csect)->ldrel_count;
- h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx];
- if (h != NULL)
- h->flags |= XCOFF_LDREL;
- break;
- case R_BR:
- case R_RBR:
- h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx];
- if (h != NULL)
+ struct xcoff_link_hash_entry *hds;
+ struct bfd_link_hash_entry *bh;
+
+ hds = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ h->root.root.string + 1,
+ TRUE, FALSE, TRUE);
+ if (hds == NULL)
+ goto error_return;
+ if (hds->root.type == bfd_link_hash_new)
{
- h->flags |= XCOFF_CALLED;
- /* If the symbol name starts with a period,
- it is the code of a function. If the
- symbol is currently undefined, then add
- an undefined symbol for the function
- descriptor. This should do no harm,
- because any regular object that defines
- the function should also define the
- function descriptor. It helps, because
- it means that we will identify the
- function descriptor with a dynamic object
- if a dynamic object defines it. */
- if (h->root.root.string[0] == '.'
- && h->descriptor == NULL)
- {
- struct xcoff_link_hash_entry *hds;
-
- hds = (xcoff_link_hash_lookup
- (xcoff_hash_table (info),
- h->root.root.string + 1, true, false,
- true));
- if (hds == NULL)
- goto error_return;
- if (hds->root.type == bfd_link_hash_new)
- {
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, hds->root.root.string,
- (flagword) 0, bfd_und_section_ptr,
- (bfd_vma) 0, (const char *) NULL,
- false, false,
- ((struct bfd_link_hash_entry **)
- NULL))))
- goto error_return;
- }
- h->descriptor = hds;
- }
+ bh = &hds->root;
+ if (! (_bfd_generic_link_add_one_symbol
+ (info, abfd, hds->root.root.string,
+ (flagword) 0, bfd_und_section_ptr,
+ (bfd_vma) 0, (const char *) NULL, FALSE,
+ TRUE, &bh)))
+ goto error_return;
+ hds = (struct xcoff_link_hash_entry *) bh;
}
- break;
+ hds->flags |= XCOFF_DESCRIPTOR;
+ BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0
+ && (h->flags & XCOFF_DESCRIPTOR) == 0);
+ hds->descriptor = h;
+ h->descriptor = hds;
}
}
}
- free (reloc_info[sub->target_index].csects);
- reloc_info[sub->target_index].csects = NULL;
+ free (reloc_info[o->target_index].csects);
+ reloc_info[o->target_index].csects = NULL;
- /* Reset SEC_RELOC, the reloc_count, and the lineno_count,
- since the reloc and lineno information is now attached to
- the csects. */
- sub->flags &=~ SEC_RELOC;
- sub->reloc_count = 0;
- sub->lineno_count = 0;
+ /* Reset SEC_RELOC and the reloc_count, since the reloc
+ information is now attached to the csects. */
+ o->flags &=~ SEC_RELOC;
+ o->reloc_count = 0;
/* If we are not keeping memory, free the reloc information. */
if (! info->keep_memory
- && coff_section_data (abfd, sub) != NULL
- && coff_section_data (abfd, sub)->relocs != NULL
- && ! coff_section_data (abfd, sub)->keep_relocs)
+ && coff_section_data (abfd, o) != NULL
+ && coff_section_data (abfd, o)->relocs != NULL
+ && ! coff_section_data (abfd, o)->keep_relocs)
{
- free (coff_section_data (abfd, sub)->relocs);
- coff_section_data (abfd, sub)->relocs = NULL;
+ free (coff_section_data (abfd, o)->relocs);
+ coff_section_data (abfd, o)->relocs = NULL;
}
}
/* Free up the line numbers. FIXME: We could cache these
- somewhere for the final link, to avoid reading them again. */
- if (reloc_info[sub->target_index].linenos != NULL)
+ somewhere for the final link, to avoid reading them again. */
+ if (reloc_info[o->target_index].linenos != NULL)
{
- free (reloc_info[sub->target_index].linenos);
- reloc_info[sub->target_index].linenos = NULL;
+ free (reloc_info[o->target_index].linenos);
+ reloc_info[o->target_index].linenos = NULL;
}
}
obj_coff_keep_syms (abfd) = keep_syms;
- return true;
+ return TRUE;
error_return:
if (reloc_info != NULL)
{
- for (sub = abfd->sections; sub != NULL; sub = sub->next)
+ for (o = abfd->sections; o != NULL; o = o->next)
{
- if (reloc_info[sub->target_index].csects != NULL)
- free (reloc_info[sub->target_index].csects);
- if (reloc_info[sub->target_index].linenos != NULL)
- free (reloc_info[sub->target_index].linenos);
+ if (reloc_info[o->target_index].csects != NULL)
+ free (reloc_info[o->target_index].csects);
+ if (reloc_info[o->target_index].linenos != NULL)
+ free (reloc_info[o->target_index].linenos);
}
- free (reloc_info);
+ free (reloc_info);
}
obj_coff_keep_syms (abfd) = keep_syms;
- return false;
+ return FALSE;
}
#undef N_TMASK
/* This function is used to add symbols from a dynamic object to the
global symbol table. */
-static boolean
+static bfd_boolean
xcoff_link_add_dynamic_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- bfd_size_type symesz;
- bfd_byte *esym;
- bfd_byte *esym_end;
+ asection *lsec;
+ bfd_byte *contents;
+ struct internal_ldhdr ldhdr;
+ const char *strings;
+ bfd_byte *elsym, *elsymend;
struct xcoff_import_file *n;
const char *bname;
const char *mname;
/* We can only handle a dynamic object if we are generating an XCOFF
output file. */
- if (info->hash->creator != abfd->xvec)
+ if (info->hash->creator != abfd->xvec)
{
(*_bfd_error_handler)
- ("%s: XCOFF shared object when not producing XCOFF output",
+ (_("%s: XCOFF shared object when not producing XCOFF output"),
bfd_get_filename (abfd));
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ return FALSE;
+ }
+
+ /* The symbols we use from a dynamic object are not the symbols in
+ the normal symbol table, but, rather, the symbols in the export
+ table. If there is a global symbol in a dynamic object which is
+ not in the export table, the loader will not be able to find it,
+ so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
+ libc.a has symbols in the export table which are not in the
+ symbol table. */
+
+ /* Read in the .loader section. FIXME: We should really use the
+ o_snloader field in the a.out header, rather than grabbing the
+ section by name. */
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: dynamic object with no .loader section"),
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_no_symbols);
+ return FALSE;
}
+
+ if (! xcoff_get_section_contents (abfd, lsec))
+ return FALSE;
+ contents = coff_section_data (abfd, lsec)->contents;
+
/* Remove the sections from this object, so that they do not get
included in the link. */
- abfd->sections = NULL;
+ bfd_section_list_clear (abfd);
- symesz = bfd_coff_symesz (abfd);
- esym = (bfd_byte *) obj_coff_external_syms (abfd);
- esym_end = esym + obj_raw_syment_count (abfd) * symesz;
- while (esym < esym_end)
+ bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
+
+ strings = (char *) contents + ldhdr.l_stoff;
+
+ elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
+
+ elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
+
+ for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd))
{
- struct internal_syment sym;
+ struct internal_ldsym ldsym;
+ char nambuf[SYMNMLEN + 1];
+ const char *name;
+ struct xcoff_link_hash_entry *h;
- bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
+ bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
- /* I think that every symbol mentioned in a dynamic object must
- be defined by that object, perhaps by importing it from
- another dynamic object. All we have to do is look up each
- external symbol. If we have already put it in the hash
- table, we simply set a flag indicating that it appears in a
- dynamic object. */
+ /* We are only interested in exported symbols. */
+ if ((ldsym.l_smtype & L_EXPORT) == 0)
+ continue;
- if (sym.n_sclass == C_EXT)
+ if (ldsym._l._l_l._l_zeroes == 0)
+ name = strings + ldsym._l._l_l._l_offset;
+ else
{
- const char *name;
- char buf[SYMNMLEN + 1];
- struct xcoff_link_hash_entry *h;
+ memcpy (nambuf, ldsym._l._l_name, SYMNMLEN);
+ nambuf[SYMNMLEN] = '\0';
+ name = nambuf;
+ }
- name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
- if (name == NULL)
- return false;
-
- /* Normally we could not xcoff_link_hash_lookup in an add
- symbols routine, since we might not be using an XCOFF
- hash table. However, we verified above that we are using
- an XCOFF hash table. */
- h = xcoff_link_hash_lookup (xcoff_hash_table (info), name,
- false, false, true);
- if (h != NULL)
+ /* Normally we could not call xcoff_link_hash_lookup in an add
+ symbols routine, since we might not be using an XCOFF hash
+ table. However, we verified above that we are using an XCOFF
+ hash table. */
+
+ h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE,
+ TRUE, TRUE);
+ if (h == NULL)
+ return FALSE;
+
+ h->flags |= XCOFF_DEF_DYNAMIC;
+
+ /* If the symbol is undefined, and the BFD it was found in is
+ not a dynamic object, change the BFD to this dynamic object,
+ so that we can get the correct import file ID. */
+ if ((h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ && (h->root.u.undef.abfd == NULL
+ || (h->root.u.undef.abfd->flags & DYNAMIC) == 0))
+ h->root.u.undef.abfd = abfd;
+
+ if (h->root.type == bfd_link_hash_new)
+ {
+ h->root.type = bfd_link_hash_undefined;
+ h->root.u.undef.abfd = abfd;
+ /* We do not want to add this to the undefined symbol list. */
+ }
+
+ if (h->smclas == XMC_UA
+ || h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ h->smclas = ldsym.l_smclas;
+
+ /* Unless this is an XMC_XO symbol, we don't bother to actually
+ define it, since we don't have a section to put it in anyhow.
+ Instead, the relocation routines handle the DEF_DYNAMIC flag
+ correctly. */
+
+ if (h->smclas == XMC_XO
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This symbol has an absolute value. */
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = bfd_abs_section_ptr;
+ h->root.u.def.value = ldsym.l_value;
+ }
+
+ /* If this symbol defines a function descriptor, then it
+ implicitly defines the function code as well. */
+ if (h->smclas == XMC_DS
+ || (h->smclas == XMC_XO && name[0] != '.'))
+ h->flags |= XCOFF_DESCRIPTOR;
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0)
+ {
+ struct xcoff_link_hash_entry *hds;
+
+ hds = h->descriptor;
+ if (hds == NULL)
{
- h->flags |= XCOFF_REF_DYNAMIC;
-
- /* If the symbol is undefined, and the current BFD is
- not a dynamic object, change the BFD to this dynamic
- object, so that we can get the import file ID
- correctly. */
- if (h->root.u.undef.abfd == NULL
- || (h->root.u.undef.abfd->flags & DYNAMIC) == 0)
- h->root.u.undef.abfd = abfd;
-
- if (h->smclas == XMC_UA
- && sym.n_numaux > 0)
+ char *dsnm;
+
+ dsnm = bfd_malloc ((bfd_size_type) strlen (name) + 2);
+ if (dsnm == NULL)
+ return FALSE;
+ dsnm[0] = '.';
+ strcpy (dsnm + 1, name);
+ hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm,
+ TRUE, TRUE, TRUE);
+ free (dsnm);
+ if (hds == NULL)
+ return FALSE;
+
+ if (hds->root.type == bfd_link_hash_new)
{
- union internal_auxent aux;
-
- bfd_coff_swap_aux_in (abfd,
- (PTR) (esym + symesz * sym.n_numaux),
- sym.n_type, sym.n_sclass,
- sym.n_numaux - 1, sym.n_numaux,
- (PTR) &aux);
- h->smclas = aux.x_csect.x_smclas;
+ hds->root.type = bfd_link_hash_undefined;
+ hds->root.u.undef.abfd = abfd;
+ /* We do not want to add this to the undefined
+ symbol list. */
}
+
+ hds->descriptor = h;
+ h->descriptor = hds;
+ }
+
+ hds->flags |= XCOFF_DEF_DYNAMIC;
+ if (hds->smclas == XMC_UA)
+ hds->smclas = XMC_PR;
+
+ /* An absolute symbol appears to actually define code, not a
+ function descriptor. This is how some math functions are
+ implemented on AIX 4.1. */
+ if (h->smclas == XMC_XO
+ && (hds->root.type == bfd_link_hash_undefined
+ || hds->root.type == bfd_link_hash_undefweak))
+ {
+ hds->smclas = XMC_XO;
+ hds->root.type = bfd_link_hash_defined;
+ hds->root.u.def.section = bfd_abs_section_ptr;
+ hds->root.u.def.value = ldsym.l_value;
}
}
+ }
- esym += (sym.n_numaux + 1) * symesz;
+ if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents)
+ {
+ free (coff_section_data (abfd, lsec)->contents);
+ coff_section_data (abfd, lsec)->contents = NULL;
}
/* Record this file in the import files. */
n = ((struct xcoff_import_file *)
- bfd_alloc (abfd, sizeof (struct xcoff_import_file)));
+ bfd_alloc (abfd, (bfd_size_type) sizeof (struct xcoff_import_file)));
if (n == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return FALSE;
n->next = NULL;
/* For some reason, the path entry in the import file list for a
xcoff_data (abfd)->import_file_id = c;
- return true;
+ return TRUE;
}
\f
/* Routines that are called after all the input files have been
handled, but before the sections are laid out in memory. */
-/* Import a symbol. */
+/* Mark a symbol as not being garbage, including the section in which
+ it is defined. */
-boolean
-bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile,
- impmember)
- bfd *output_bfd;
+static INLINE bfd_boolean
+xcoff_mark_symbol (info, h)
struct bfd_link_info *info;
- struct bfd_link_hash_entry *harg;
- bfd_vma val;
- const char *imppath;
- const char *impfile;
- const char *impmember;
+ struct xcoff_link_hash_entry *h;
{
- struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
- h->flags |= XCOFF_IMPORT;
+ if ((h->flags & XCOFF_MARK) != 0)
+ return TRUE;
- if (val != (bfd_vma) -1)
+ h->flags |= XCOFF_MARK;
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
{
- if (h->root.type == bfd_link_hash_defined)
+ asection *hsec;
+
+ hsec = h->root.u.def.section;
+ if (! bfd_is_abs_section (hsec)
+ && (hsec->flags & SEC_MARK) == 0)
{
- if (! ((*info->callbacks->multiple_definition)
- (info, h->root.root.string, h->root.u.def.section->owner,
- h->root.u.def.section, h->root.u.def.value,
- output_bfd, bfd_abs_section_ptr, val)))
- return false;
+ if (! xcoff_mark (info, hsec))
+ return FALSE;
}
-
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = bfd_abs_section_ptr;
- h->root.u.def.value = val;
}
- if (h->ldsym == NULL)
+ if (h->toc_section != NULL
+ && (h->toc_section->flags & SEC_MARK) == 0)
{
- h->ldsym = ((struct internal_ldsym *)
- bfd_zalloc (output_bfd, sizeof (struct internal_ldsym)));
- if (h->ldsym == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ if (! xcoff_mark (info, h->toc_section))
+ return FALSE;
}
- if (imppath == NULL)
- h->ldsym->l_ifile = (bfd_size_type) -1;
- else
+ return TRUE;
+}
+
+/* The mark phase of garbage collection. For a given section, mark
+ it, and all the sections which define symbols to which it refers.
+ Because this function needs to look at the relocs, we also count
+ the number of relocs which need to be copied into the .loader
+ section. */
+
+static bfd_boolean
+xcoff_mark (info, sec)
+ struct bfd_link_info *info;
+ asection *sec;
+{
+ if (bfd_is_abs_section (sec)
+ || (sec->flags & SEC_MARK) != 0)
+ return TRUE;
+
+ sec->flags |= SEC_MARK;
+
+ if (sec->owner->xvec == info->hash->creator
+ && coff_section_data (sec->owner, sec) != NULL
+ && xcoff_section_data (sec->owner, sec) != NULL)
{
- unsigned int c;
- struct xcoff_import_file **pp;
+ register struct xcoff_link_hash_entry **hp, **hpend;
+ struct internal_reloc *rel, *relend;
- /* We start c at 1 because the first entry in the import list is
- reserved for the library search path. */
- for (pp = &xcoff_hash_table (info)->imports, c = 1;
- *pp != NULL;
- pp = &(*pp)->next, ++c)
- {
- if (strcmp ((*pp)->path, imppath) == 0
- && strcmp ((*pp)->file, impfile) == 0
- && strcmp ((*pp)->member, impmember) == 0)
- break;
- }
+ /* Mark all the symbols in this section. */
- if (*pp == NULL)
+ hp = (obj_xcoff_sym_hashes (sec->owner)
+ + xcoff_section_data (sec->owner, sec)->first_symndx);
+ hpend = (obj_xcoff_sym_hashes (sec->owner)
+ + xcoff_section_data (sec->owner, sec)->last_symndx);
+ for (; hp < hpend; hp++)
{
- struct xcoff_import_file *n;
+ register struct xcoff_link_hash_entry *h;
- n = ((struct xcoff_import_file *)
- bfd_alloc (output_bfd, sizeof (struct xcoff_import_file)));
- if (n == NULL)
+ h = *hp;
+ if (h != NULL
+ && (h->flags & XCOFF_MARK) == 0)
{
- bfd_set_error (bfd_error_no_memory);
- return false;
+ if (! xcoff_mark_symbol (info, h))
+ return FALSE;
}
- n->next = NULL;
- n->path = imppath;
- n->file = impfile;
- n->member = impmember;
- *pp = n;
}
- h->ldsym->l_ifile = c;
- }
+ /* Look through the section relocs. */
- return true;
-}
+ if ((sec->flags & SEC_RELOC) != 0
+ && sec->reloc_count > 0)
+ {
+ rel = xcoff_read_internal_relocs (sec->owner, sec, TRUE,
+ (bfd_byte *) NULL, FALSE,
+ (struct internal_reloc *) NULL);
+ if (rel == NULL)
+ return FALSE;
+ relend = rel + sec->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ asection *rsec;
+ struct xcoff_link_hash_entry *h;
-/* Export a symbol. */
+ if ((unsigned int) rel->r_symndx
+ > obj_raw_syment_count (sec->owner))
+ continue;
-boolean
-bfd_xcoff_export_symbol (output_bfd, info, harg, syscall)
- bfd *output_bfd;
- struct bfd_link_info *info;
- struct bfd_link_hash_entry *harg;
- boolean syscall;
-{
- struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
+ h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx];
+ if (h != NULL
+ && (h->flags & XCOFF_MARK) == 0)
+ {
+ if (! xcoff_mark_symbol (info, h))
+ return FALSE;
+ }
- h->flags |= XCOFF_EXPORT;
+ rsec = xcoff_data (sec->owner)->csects[rel->r_symndx];
+ if (rsec != NULL
+ && (rsec->flags & SEC_MARK) == 0)
+ {
+ if (! xcoff_mark (info, rsec))
+ return FALSE;
+ }
- /* FIXME: I'm not at all sure what syscall is supposed to mean, so
- I'm just going to ignore it until somebody explains it. */
+ /* See if this reloc needs to be copied into the .loader
+ section. */
+ switch (rel->r_type)
+ {
+ default:
+ if (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak
+ || h->root.type == bfd_link_hash_common
+ || ((h->flags & XCOFF_CALLED) != 0
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ && h->root.root.string[0] == '.'
+ && h->descriptor != NULL
+ && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
+ || ((h->descriptor->flags & XCOFF_IMPORT) != 0
+ && (h->descriptor->flags
+ & XCOFF_DEF_REGULAR) == 0))))
+ break;
+ /* Fall through. */
+ case R_POS:
+ case R_NEG:
+ case R_RL:
+ case R_RLA:
+ ++xcoff_hash_table (info)->ldrel_count;
+ if (h != NULL)
+ h->flags |= XCOFF_LDREL;
+ break;
+ case R_TOC:
+ case R_GL:
+ case R_TCL:
+ case R_TRL:
+ case R_TRLA:
+ /* We should never need a .loader reloc for a TOC
+ relative reloc. */
+ break;
+ }
+ }
+
+ if (! info->keep_memory
+ && coff_section_data (sec->owner, sec) != NULL
+ && coff_section_data (sec->owner, sec)->relocs != NULL
+ && ! coff_section_data (sec->owner, sec)->keep_relocs)
+ {
+ free (coff_section_data (sec->owner, sec)->relocs);
+ coff_section_data (sec->owner, sec)->relocs = NULL;
+ }
+ }
+ }
- return true;
+ return TRUE;
}
-/* This structure is used to pass information through
- xcoff_link_hash_traverse. */
+/* The sweep phase of garbage collection. Remove all garbage
+ sections. */
-struct xcoff_loader_info
+static void
+xcoff_sweep (info)
+ struct bfd_link_info *info;
{
- /* Set if a problem occurred. */
- boolean failed;
- /* Output BFD. */
- bfd *output_bfd;
- /* Link information structure. */
- struct bfd_link_info *info;
- /* Number of ldsym structures. */
- size_t ldsym_count;
- /* Size of string table. */
- size_t string_size;
- /* String table. */
- bfd_byte *strings;
- /* Allocated size of string table. */
- size_t string_alc;
-};
+ bfd *sub;
-/* Build the .loader section. This is called by the XCOFF linker
- emulation before_allocation routine. We must set the size of the
- .loader section before the linker lays out the output file.
- LIBPATH is the library path to search for shared objects; this is
- normally built from the -L arguments passed to the linker. ENTRY
- is the name of the entry point symbol. */
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ {
+ asection *o;
-boolean
-bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry,
- file_align, maxstack, maxdata, gc,
- modtype, textro)
- bfd *output_bfd;
- struct bfd_link_info *info;
- const char *libpath;
+ for (o = sub->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_MARK) == 0)
+ {
+ /* Keep all sections from non-XCOFF input files. Keep
+ special sections. Keep .debug sections for the
+ moment. */
+ if (sub->xvec != info->hash->creator
+ || o == xcoff_hash_table (info)->debug_section
+ || o == xcoff_hash_table (info)->loader_section
+ || o == xcoff_hash_table (info)->linkage_section
+ || o == xcoff_hash_table (info)->toc_section
+ || o == xcoff_hash_table (info)->descriptor_section
+ || strcmp (o->name, ".debug") == 0)
+ o->flags |= SEC_MARK;
+ else
+ {
+ o->_raw_size = 0;
+ o->reloc_count = 0;
+ o->lineno_count = 0;
+ }
+ }
+ }
+ }
+}
+
+/* Record the number of elements in a set. This is used to output the
+ correct csect length. */
+
+bfd_boolean
+bfd_xcoff_link_record_set (output_bfd, info, harg, size)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct bfd_link_hash_entry *harg;
+ bfd_size_type size;
+{
+ struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
+ struct xcoff_link_size_list *n;
+ bfd_size_type amt;
+
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ return TRUE;
+
+ /* This will hardly ever be called. I don't want to burn four bytes
+ per global symbol, so instead the size is kept on a linked list
+ attached to the hash table. */
+
+ amt = sizeof (struct xcoff_link_size_list);
+ n = (struct xcoff_link_size_list *) bfd_alloc (output_bfd, amt);
+ if (n == NULL)
+ return FALSE;
+ n->next = xcoff_hash_table (info)->size_list;
+ n->h = h;
+ n->size = size;
+ xcoff_hash_table (info)->size_list = n;
+
+ h->flags |= XCOFF_HAS_SIZE;
+
+ return TRUE;
+}
+
+/* Import a symbol. */
+
+bfd_boolean
+bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile,
+ impmember, syscall_flag)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct bfd_link_hash_entry *harg;
+ bfd_vma val;
+ const char *imppath;
+ const char *impfile;
+ const char *impmember;
+ unsigned int syscall_flag;
+{
+ struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
+
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ return TRUE;
+
+ /* A symbol name which starts with a period is the code for a
+ function. If the symbol is undefined, then add an undefined
+ symbol for the function descriptor, and import that instead. */
+ if (h->root.root.string[0] == '.'
+ && h->root.type == bfd_link_hash_undefined
+ && val == (bfd_vma) -1)
+ {
+ struct xcoff_link_hash_entry *hds;
+
+ hds = h->descriptor;
+ if (hds == NULL)
+ {
+ hds = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ h->root.root.string + 1,
+ TRUE, FALSE, TRUE);
+ if (hds == NULL)
+ return FALSE;
+ if (hds->root.type == bfd_link_hash_new)
+ {
+ hds->root.type = bfd_link_hash_undefined;
+ hds->root.u.undef.abfd = h->root.u.undef.abfd;
+ }
+ hds->flags |= XCOFF_DESCRIPTOR;
+ BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0
+ && (h->flags & XCOFF_DESCRIPTOR) == 0);
+ hds->descriptor = h;
+ h->descriptor = hds;
+ }
+
+ /* Now, if the descriptor is undefined, import the descriptor
+ rather than the symbol we were told to import. FIXME: Is
+ this correct in all cases? */
+ if (hds->root.type == bfd_link_hash_undefined)
+ h = hds;
+ }
+
+ h->flags |= (XCOFF_IMPORT | syscall_flag);
+
+ if (val != (bfd_vma) -1)
+ {
+ if (h->root.type == bfd_link_hash_defined
+ && (! bfd_is_abs_section (h->root.u.def.section)
+ || h->root.u.def.value != val))
+ {
+ if (! ((*info->callbacks->multiple_definition)
+ (info, h->root.root.string, h->root.u.def.section->owner,
+ h->root.u.def.section, h->root.u.def.value,
+ output_bfd, bfd_abs_section_ptr, val)))
+ return FALSE;
+ }
+
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = bfd_abs_section_ptr;
+ h->root.u.def.value = val;
+ }
+
+ /* We overload the ldindx field to hold the l_ifile value for this
+ symbol. */
+ BFD_ASSERT (h->ldsym == NULL);
+ BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0);
+ if (imppath == NULL)
+ h->ldindx = -1;
+ else
+ {
+ unsigned int c;
+ struct xcoff_import_file **pp;
+
+ /* We start c at 1 because the first entry in the import list is
+ reserved for the library search path. */
+ for (pp = &xcoff_hash_table (info)->imports, c = 1;
+ *pp != NULL;
+ pp = &(*pp)->next, ++c)
+ {
+ if (strcmp ((*pp)->path, imppath) == 0
+ && strcmp ((*pp)->file, impfile) == 0
+ && strcmp ((*pp)->member, impmember) == 0)
+ break;
+ }
+
+ if (*pp == NULL)
+ {
+ struct xcoff_import_file *n;
+ bfd_size_type amt = sizeof (struct xcoff_import_file);
+
+ n = (struct xcoff_import_file *) bfd_alloc (output_bfd, amt);
+ if (n == NULL)
+ return FALSE;
+ n->next = NULL;
+ n->path = imppath;
+ n->file = impfile;
+ n->member = impmember;
+ *pp = n;
+ }
+
+ h->ldindx = c;
+ }
+
+ return TRUE;
+}
+
+/* Export a symbol. */
+
+bfd_boolean
+bfd_xcoff_export_symbol (output_bfd, info, harg)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct bfd_link_hash_entry *harg;
+{
+ struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
+
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ return TRUE;
+
+ h->flags |= XCOFF_EXPORT;
+
+ /* FIXME: I'm not at all sure what syscall is supposed to mean, so
+ I'm just going to ignore it until somebody explains it. */
+
+ /* See if this is a function descriptor. It may be one even though
+ it is not so marked. */
+ if ((h->flags & XCOFF_DESCRIPTOR) == 0
+ && h->root.root.string[0] != '.')
+ {
+ char *fnname;
+ struct xcoff_link_hash_entry *hfn;
+ bfd_size_type amt = strlen (h->root.root.string) + 2;
+
+ fnname = (char *) bfd_malloc (amt);
+ if (fnname == NULL)
+ return FALSE;
+ fnname[0] = '.';
+ strcpy (fnname + 1, h->root.root.string);
+ hfn = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ fnname, FALSE, FALSE, TRUE);
+ free (fnname);
+ if (hfn != NULL
+ && hfn->smclas == XMC_PR
+ && (hfn->root.type == bfd_link_hash_defined
+ || hfn->root.type == bfd_link_hash_defweak))
+ {
+ h->flags |= XCOFF_DESCRIPTOR;
+ h->descriptor = hfn;
+ hfn->descriptor = h;
+ }
+ }
+
+ /* Make sure we don't garbage collect this symbol. */
+ if (! xcoff_mark_symbol (info, h))
+ return FALSE;
+
+ /* If this is a function descriptor, make sure we don't garbage
+ collect the associated function code. We normally don't have to
+ worry about this, because the descriptor will be attached to a
+ section with relocs, but if we are creating the descriptor
+ ourselves those relocs will not be visible to the mark code. */
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0)
+ {
+ if (! xcoff_mark_symbol (info, h->descriptor))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Count a reloc against a symbol. This is called for relocs
+ generated by the linker script, typically for global constructors
+ and destructors. */
+
+bfd_boolean
+bfd_xcoff_link_count_reloc (output_bfd, info, name)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ const char *name;
+{
+ struct xcoff_link_hash_entry *h;
+
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ return TRUE;
+
+ h = ((struct xcoff_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (output_bfd, info, name, FALSE, FALSE,
+ FALSE));
+ if (h == NULL)
+ {
+ (*_bfd_error_handler) (_("%s: no such symbol"), name);
+ bfd_set_error (bfd_error_no_symbols);
+ return FALSE;
+ }
+
+ h->flags |= XCOFF_REF_REGULAR | XCOFF_LDREL;
+ ++xcoff_hash_table (info)->ldrel_count;
+
+ /* Mark the symbol to avoid garbage collection. */
+ if (! xcoff_mark_symbol (info, h))
+ return FALSE;
+
+ return TRUE;
+}
+
+/* This function is called for each symbol to which the linker script
+ assigns a value. */
+
+bfd_boolean
+bfd_xcoff_record_link_assignment (output_bfd, info, name)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ const char *name;
+{
+ struct xcoff_link_hash_entry *h;
+
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ return TRUE;
+
+ h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, TRUE,
+ FALSE);
+ if (h == NULL)
+ return FALSE;
+
+ h->flags |= XCOFF_DEF_REGULAR;
+
+ return TRUE;
+}
+
+/* Build the .loader section. This is called by the XCOFF linker
+ emulation before_allocation routine. We must set the size of the
+ .loader section before the linker lays out the output file.
+ LIBPATH is the library path to search for shared objects; this is
+ normally built from the -L arguments passed to the linker. ENTRY
+ is the name of the entry point symbol (the -e linker option).
+ FILE_ALIGN is the alignment to use for sections within the file
+ (the -H linker option). MAXSTACK is the maximum stack size (the
+ -bmaxstack linker option). MAXDATA is the maximum data size (the
+ -bmaxdata linker option). GC is whether to do garbage collection
+ (the -bgc linker option). MODTYPE is the module type (the
+ -bmodtype linker option). TEXTRO is whether the text section must
+ be read only (the -btextro linker option). EXPORT_DEFINEDS is
+ whether all defined symbols should be exported (the -unix linker
+ option). SPECIAL_SECTIONS is set by this routine to csects with
+ magic names like _end. */
+
+bfd_boolean
+bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry,
+ file_align, maxstack, maxdata, gc,
+ modtype, textro, export_defineds,
+ special_sections, rtld)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ const char *libpath;
const char *entry;
unsigned long file_align;
unsigned long maxstack;
unsigned long maxdata;
- boolean gc;
+ bfd_boolean gc;
int modtype;
- boolean textro;
+ bfd_boolean textro;
+ bfd_boolean export_defineds;
+ asection **special_sections;
+ bfd_boolean rtld;
{
struct xcoff_link_hash_entry *hentry;
asection *lsec;
struct xcoff_loader_info ldinfo;
+ int i;
size_t impsize, impcount;
struct xcoff_import_file *fl;
struct internal_ldhdr *ldhdr;
+ bfd_size_type stoff;
register char *out;
asection *sec;
bfd *sub;
struct bfd_strtab_hash *debug_strtab;
bfd_byte *debug_contents = NULL;
+ bfd_size_type amt;
- ldinfo.failed = false;
+ if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
+ {
+ for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++)
+ special_sections[i] = NULL;
+ return TRUE;
+ }
+
+ ldinfo.failed = FALSE;
ldinfo.output_bfd = output_bfd;
ldinfo.info = info;
+ ldinfo.export_defineds = export_defineds;
ldinfo.ldsym_count = 0;
ldinfo.string_size = 0;
ldinfo.strings = NULL;
xcoff_hash_table (info)->file_align = file_align;
xcoff_hash_table (info)->textro = textro;
- hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry,
- false, false, true);
- if (hentry != NULL)
- hentry->flags |= XCOFF_ENTRY;
+ hentry = NULL;
+ if (entry != NULL)
+ {
+ hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry,
+ FALSE, FALSE, TRUE);
+ if (hentry != NULL)
+ hentry->flags |= XCOFF_ENTRY;
+ }
+
+ /* __rtinit */
+ if (info->init_function || info->fini_function || rtld)
+ {
+ struct xcoff_link_hash_entry *hsym;
+ struct internal_ldsym *ldsym;
+
+ hsym = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ "__rtinit", FALSE, FALSE, TRUE);
+ if (hsym == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("error: undefined symbol __rtinit"));
+ return FALSE;
+ }
+
+ xcoff_mark_symbol (info, hsym);
+ hsym->flags |= (XCOFF_DEF_REGULAR | XCOFF_RTINIT);
+
+ /* __rtinit initialized */
+ amt = sizeof (struct internal_ldsym);
+ ldsym = (struct internal_ldsym *) bfd_malloc (amt);
+
+ ldsym->l_value = 0; /* will be filled in later */
+ ldsym->l_scnum = 2; /* data section */
+ ldsym->l_smtype = XTY_SD; /* csect section definition */
+ ldsym->l_smclas = 5; /* .rw */
+ ldsym->l_ifile = 0; /* special system loader symbol */
+ ldsym->l_parm = 0; /* NA */
+
+ /* Force __rtinit to be the first symbol in the loader symbol table
+ See xcoff_build_ldsyms
+
+ The first 3 symbol table indices are reserved to indicate the data,
+ text and bss sections. */
+ BFD_ASSERT (0 == ldinfo.ldsym_count);
+
+ hsym->ldindx = 3;
+ ldinfo.ldsym_count = 1;
+ hsym->ldsym = ldsym;
+
+ if (! bfd_xcoff_put_ldsymbol_name (ldinfo.output_bfd, &ldinfo,
+ hsym->ldsym, hsym->root.root.string))
+ return FALSE;
+
+ /* This symbol is written out by xcoff_write_global_symbol
+ Set stuff up so xcoff_write_global_symbol logic works. */
+ hsym->flags |= XCOFF_DEF_REGULAR | XCOFF_MARK;
+ hsym->root.type = bfd_link_hash_defined;
+ hsym->root.u.def.value = 0;
+ }
/* Garbage collect unused sections. */
- if (info->relocateable
+ if (info->relocatable
|| ! gc
|| hentry == NULL
|| (hentry->root.type != bfd_link_hash_defined
&& hentry->root.type != bfd_link_hash_defweak))
{
- gc = false;
- xcoff_hash_table (info)->gc = false;
+ gc = FALSE;
+ xcoff_hash_table (info)->gc = FALSE;
+
+ /* We still need to call xcoff_mark, in order to set ldrel_count
+ correctly. */
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ {
+ asection *o;
+
+ for (o = sub->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_MARK) == 0)
+ {
+ if (! xcoff_mark (info, o))
+ goto error_return;
+ }
+ }
+ }
}
else
{
if (! xcoff_mark (info, hentry->root.u.def.section))
goto error_return;
xcoff_sweep (info);
- xcoff_hash_table (info)->gc = true;
+ xcoff_hash_table (info)->gc = TRUE;
+ }
+
+ /* Return special sections to the caller. */
+ for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++)
+ {
+ sec = xcoff_hash_table (info)->special_sections[i];
+
+ if (sec != NULL
+ && gc
+ && (sec->flags & SEC_MARK) == 0)
+ {
+ sec = NULL;
+ }
+ special_sections[i] = sec;
}
if (info->input_bfds == NULL)
{
/* I'm not sure what to do in this bizarre case. */
- return true;
+ return TRUE;
}
xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_build_ldsyms,
/* Set up the .loader section header. */
ldhdr = &xcoff_hash_table (info)->ldhdr;
- ldhdr->l_version = 1;
+ ldhdr->l_version = bfd_xcoff_ldhdr_version(output_bfd);
ldhdr->l_nsyms = ldinfo.ldsym_count;
ldhdr->l_nreloc = xcoff_hash_table (info)->ldrel_count;
ldhdr->l_istlen = impsize;
ldhdr->l_nimpid = impcount;
- ldhdr->l_impoff = (LDHDRSZ
- + ldhdr->l_nsyms * LDSYMSZ
- + ldhdr->l_nreloc * LDRELSZ);
+ ldhdr->l_impoff = (bfd_xcoff_ldhdrsz(output_bfd)
+ + ldhdr->l_nsyms * bfd_xcoff_ldsymsz(output_bfd)
+ + ldhdr->l_nreloc * bfd_xcoff_ldrelsz(output_bfd));
ldhdr->l_stlen = ldinfo.string_size;
- ldhdr->l_stoff = ldhdr->l_impoff + impsize;
+ stoff = ldhdr->l_impoff + impsize;
+ if (ldinfo.string_size == 0)
+ ldhdr->l_stoff = 0;
+ else
+ ldhdr->l_stoff = stoff;
+
+ /* 64 bit elements to ldhdr
+ The swap out routine for 32 bit will ignore them.
+ Nothing fancy, symbols come after the header and relocs come
+ after symbols. */
+ ldhdr->l_symoff = bfd_xcoff_ldhdrsz (output_bfd);
+ ldhdr->l_rldoff = (bfd_xcoff_ldhdrsz (output_bfd)
+ + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd));
/* We now know the final size of the .loader section. Allocate
space for it. */
lsec = xcoff_hash_table (info)->loader_section;
- lsec->_raw_size = ldhdr->l_stoff + ldhdr->l_stlen;
+ lsec->_raw_size = stoff + ldhdr->l_stlen;
lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size);
if (lsec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
/* Set up the header. */
- xcoff_swap_ldhdr_out (output_bfd, ldhdr,
- (struct external_ldhdr *) lsec->contents);
+ bfd_xcoff_swap_ldhdr_out (output_bfd, ldhdr, lsec->contents);
/* Set up the import file names. */
out = (char *) lsec->contents + ldhdr->l_impoff;
;
}
- BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents)
- == ldhdr->l_stoff);
+ BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == stoff);
/* Set up the symbol string table. */
if (ldinfo.string_size > 0)
symbols are written out in xcoff_link_input_bfd or
xcoff_write_global_symbol. The .loader relocs are written out
when the corresponding normal relocs are handled in
- xcoff_link_input_bfd. */
+ xcoff_link_input_bfd.
+ */
- /* Allocate space for the global linkage section and the global toc
- section. */
+ /* Allocate space for the magic sections. */
sec = xcoff_hash_table (info)->linkage_section;
if (sec->_raw_size > 0)
{
sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
if (sec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
}
sec = xcoff_hash_table (info)->toc_section;
if (sec->_raw_size > 0)
{
sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
if (sec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
+ }
+ sec = xcoff_hash_table (info)->descriptor_section;
+ if (sec->_raw_size > 0)
+ {
+ sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
+ if (sec->contents == NULL)
+ goto error_return;
}
/* Now that we've done garbage collection, figure out the contents
debug_index = ((unsigned long *)
bfd_zalloc (sub, symcount * sizeof (unsigned long)));
if (debug_index == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_data (sub)->debug_indices = debug_index;
/* Grab the contents of the .debug section. We use malloc and
- copy the neams into the debug stringtab, rather than
+ copy the names into the debug stringtab, rather than
bfd_alloc, because I expect that, when linking many files
together, many of the strings will be the same. Storing the
strings in the hash table should save space in this case. */
- debug_contents = (bfd_byte *) malloc (subdeb->_raw_size);
+ debug_contents = (bfd_byte *) bfd_malloc (subdeb->_raw_size);
if (debug_contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents,
(file_ptr) 0, subdeb->_raw_size))
goto error_return;
csectpp = xcoff_data (sub)->csects;
- symesz = bfd_coff_symesz (sub);
- esym = (bfd_byte *) obj_coff_external_syms (sub);
- esymend = esym + symcount * symesz;
- while (esym < esymend)
+ /* Dynamic object do not have csectpp's. */
+ if (NULL != csectpp)
{
- struct internal_syment sym;
+ symesz = bfd_coff_symesz (sub);
+ esym = (bfd_byte *) obj_coff_external_syms (sub);
+ esymend = esym + symcount * symesz;
- bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym);
+ while (esym < esymend)
+ {
+ struct internal_syment sym;
- *debug_index = (unsigned long) -1;
+ bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym);
- if (sym._n._n_n._n_zeroes == 0
- && *csectpp != NULL
- && (! gc
- || ((*csectpp)->flags & SEC_MARK) != 0
- || *csectpp == bfd_abs_section_ptr)
- && bfd_coff_symname_in_debug (sub, &sym))
- {
- char *name;
- bfd_size_type indx;
+ *debug_index = (unsigned long) -1;
- name = (char *) debug_contents + sym._n._n_n._n_offset;
- indx = _bfd_stringtab_add (debug_strtab, name, true, true);
- if (indx == (bfd_size_type) -1)
- goto error_return;
- *debug_index = indx;
- }
+ if (sym._n._n_n._n_zeroes == 0
+ && *csectpp != NULL
+ && (! gc
+ || ((*csectpp)->flags & SEC_MARK) != 0
+ || *csectpp == bfd_abs_section_ptr)
+ && bfd_coff_symname_in_debug (sub, &sym))
+ {
+ char *name;
+ bfd_size_type indx;
- esym += (sym.n_numaux + 1) * symesz;
- csectpp += sym.n_numaux + 1;
- debug_index += sym.n_numaux + 1;
+ name = (char *) debug_contents + sym._n._n_n._n_offset;
+ indx = _bfd_stringtab_add (debug_strtab, name, TRUE, TRUE);
+ if (indx == (bfd_size_type) -1)
+ goto error_return;
+ *debug_index = indx;
+ }
+
+ esym += (sym.n_numaux + 1) * symesz;
+ csectpp += sym.n_numaux + 1;
+ debug_index += sym.n_numaux + 1;
+ }
}
free (debug_contents);
}
}
- xcoff_hash_table (info)->debug_section->_raw_size =
- _bfd_stringtab_size (debug_strtab);
+ if (info->strip != strip_all)
+ xcoff_hash_table (info)->debug_section->_raw_size =
+ _bfd_stringtab_size (debug_strtab);
- return true;
+ return TRUE;
error_return:
if (ldinfo.strings != NULL)
free (ldinfo.strings);
if (debug_contents != NULL)
free (debug_contents);
- return false;
+ return FALSE;
}
-/* The mark phase of garbage collection. For a given section, mark
- it, and all the sections which define symbols to which it refers. */
-
-static boolean
-xcoff_mark (info, sec)
- struct bfd_link_info *info;
- asection *sec;
+bfd_boolean
+bfd_xcoff_link_generate_rtinit (abfd, init, fini, rtld)
+ bfd *abfd;
+ const char *init;
+ const char *fini;
+ bfd_boolean rtld;
{
- if ((sec->flags & SEC_MARK) != 0)
- return true;
+ struct bfd_in_memory *bim;
- sec->flags |= SEC_MARK;
+ bim = ((struct bfd_in_memory *)
+ bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory)));
+ if (bim == NULL)
+ return FALSE;
- if (sec->owner->xvec == info->hash->creator
- && coff_section_data (sec->owner, sec) != NULL
- && xcoff_section_data (sec->owner, sec) != NULL)
- {
- register struct xcoff_link_hash_entry **hp, **hpend;
- struct internal_reloc *rel, *relend;
-
- /* Mark all the symbols in this section. */
-
- hp = (obj_xcoff_sym_hashes (sec->owner)
- + xcoff_section_data (sec->owner, sec)->first_symndx);
- hpend = (obj_xcoff_sym_hashes (sec->owner)
- + xcoff_section_data (sec->owner, sec)->last_symndx);
- for (; hp < hpend; hp++)
- {
- register struct xcoff_link_hash_entry *h;
-
- h = *hp;
- if (h != NULL
- && (h->flags & XCOFF_MARK) == 0)
- {
- h->flags |= XCOFF_MARK;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *hsec;
-
- hsec = h->root.u.def.section;
- if ((hsec->flags & SEC_MARK) == 0)
- {
- if (! xcoff_mark (info, hsec))
- return false;
- }
- }
-
- if (h->toc_section != NULL
- && (h->toc_section->flags & SEC_MARK) == 0)
- {
- if (! xcoff_mark (info, h->toc_section))
- return false;
- }
- }
- }
-
- /* Look through the section relocs. */
-
- rel = xcoff_read_internal_relocs (sec->owner, sec, true,
- (bfd_byte *) NULL, false,
- (struct internal_reloc *) NULL);
- if (rel == NULL)
- return false;
- relend = rel + sec->reloc_count;
- for (; rel < relend; rel++)
- {
- asection *rsec;
- struct xcoff_link_hash_entry *h;
+ bim->size = 0;
+ bim->buffer = 0;
- if ((unsigned int) rel->r_symndx
- > obj_raw_syment_count (sec->owner))
- continue;
+ abfd->link_next = 0;
+ abfd->format = bfd_object;
+ abfd->iostream = (PTR) bim;
+ abfd->flags = BFD_IN_MEMORY;
+ abfd->direction = write_direction;
+ abfd->where = 0;
- h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx];
- if (h != NULL
- && (h->flags & XCOFF_MARK) == 0)
- {
- h->flags |= XCOFF_MARK;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *hsec;
+ if (! bfd_xcoff_generate_rtinit (abfd, init, fini, rtld))
+ return FALSE;
- hsec = h->root.u.def.section;
- if ((hsec->flags & SEC_MARK) == 0)
- {
- if (! xcoff_mark (info, hsec))
- return false;
- }
- }
+ /* need to reset to unknown or it will not be read back in correctly */
+ abfd->format = bfd_unknown;
+ abfd->direction = read_direction;
+ abfd->where = 0;
- if (h->toc_section != NULL
- && (h->toc_section->flags & SEC_MARK) == 0)
- {
- if (! xcoff_mark (info, h->toc_section))
- return false;
- }
- }
+ return TRUE;
+}
- rsec = xcoff_data (sec->owner)->csects[rel->r_symndx];
- if (rsec != NULL
- && (rsec->flags & SEC_MARK) == 0)
- {
- if (! xcoff_mark (info, rsec))
- return false;
- }
- }
- if (! info->keep_memory
- && coff_section_data (sec->owner, sec) != NULL
- && coff_section_data (sec->owner, sec)->relocs != NULL
- && ! coff_section_data (sec->owner, sec)->keep_relocs)
- {
- free (coff_section_data (sec->owner, sec)->relocs);
- coff_section_data (sec->owner, sec)->relocs = NULL;
- }
- }
+/* Add a symbol to the .loader symbols, if necessary. */
- return true;
-}
+static bfd_boolean
+xcoff_build_ldsyms (h, p)
+ struct xcoff_link_hash_entry *h;
+ PTR p;
+{
+ struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p;
+ bfd_size_type amt;
-/* The sweep phase of garbage collection. Remove all garbage
- sections. */
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct xcoff_link_hash_entry *) h->root.u.i.link;
-static void
-xcoff_sweep (info)
- struct bfd_link_info *info;
-{
- bfd *sub;
+ /* __rtinit, this symbol has special handling. */
+ if (h->flags & XCOFF_RTINIT)
+ return TRUE;
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ /* If this is a final link, and the symbol was defined as a common
+ symbol in a regular object file, and there was no definition in
+ any dynamic object, then the linker will have allocated space for
+ the symbol in a common section but the XCOFF_DEF_REGULAR flag
+ will not have been set. */
+ if (h->root.type == bfd_link_hash_defined
+ && (h->flags & XCOFF_DEF_REGULAR) == 0
+ && (h->flags & XCOFF_REF_REGULAR) != 0
+ && (h->flags & XCOFF_DEF_DYNAMIC) == 0
+ && (bfd_is_abs_section (h->root.u.def.section)
+ || (h->root.u.def.section->owner->flags & DYNAMIC) == 0))
+ h->flags |= XCOFF_DEF_REGULAR;
+
+ /* If all defined symbols should be exported, mark them now. We
+ don't want to export the actual functions, just the function
+ descriptors. */
+ if (ldinfo->export_defineds
+ && (h->flags & XCOFF_DEF_REGULAR) != 0
+ && h->root.root.string[0] != '.')
{
- asection *o;
-
- for (o = sub->sections; o != NULL; o = o->next)
+ bfd_boolean export;
+
+ /* We don't export a symbol which is being defined by an object
+ included from an archive which contains a shared object. The
+ rationale is that if an archive contains both an unshared and
+ a shared object, then there must be some reason that the
+ unshared object is unshared, and we don't want to start
+ providing a shared version of it. In particular, this solves
+ a bug involving the _savefNN set of functions. gcc will call
+ those functions without providing a slot to restore the TOC,
+ so it is essential that these functions be linked in directly
+ and not from a shared object, which means that a shared
+ object which also happens to link them in must not export
+ them. This is confusing, but I haven't been able to think of
+ a different approach. Note that the symbols can, of course,
+ be exported explicitly. */
+ export = TRUE;
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && h->root.u.def.section->owner != NULL
+ && h->root.u.def.section->owner->my_archive != NULL)
{
- if ((o->flags & SEC_MARK) == 0)
+ bfd *arbfd, *member;
+
+ arbfd = h->root.u.def.section->owner->my_archive;
+ member = bfd_openr_next_archived_file (arbfd, (bfd *) NULL);
+ while (member != NULL)
{
- /* Keep all sections from non-XCOFF input files. Keep
- special sections. Keep .debug sections for the
- moment. */
- if (sub->xvec != info->hash->creator
- || o == xcoff_hash_table (info)->debug_section
- || o == xcoff_hash_table (info)->loader_section
- || o == xcoff_hash_table (info)->linkage_section
- || o == xcoff_hash_table (info)->toc_section
- || strcmp (o->name, ".debug") == 0)
- o->flags |= SEC_MARK;
- else
+ if ((member->flags & DYNAMIC) != 0)
{
- o->_raw_size = 0;
- o->reloc_count = 0;
- o->lineno_count = 0;
- if (coff_section_data (sub, o) != NULL
- && xcoff_section_data (sub, o) != NULL)
- xcoff_hash_table (info)->ldrel_count -=
- xcoff_section_data (sub, o)->ldrel_count;
+ export = FALSE;
+ break;
}
+ member = bfd_openr_next_archived_file (arbfd, member);
}
}
- }
-}
-
-/* Add a symbol to the .loader symbols, if necessary. */
-static boolean
-xcoff_build_ldsyms (h, p)
- struct xcoff_link_hash_entry *h;
- PTR p;
-{
- struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p;
- size_t len;
+ if (export)
+ h->flags |= XCOFF_EXPORT;
+ }
/* We don't want to garbage collect symbols which are not defined in
XCOFF files. This is a convenient place to mark them. */
!= ldinfo->info->hash->creator)))
h->flags |= XCOFF_MARK;
- /* If this symbol is called, and it is defined in a dynamic object,
- then we need to set up global linkage code for it. (Unless we
- did garbage collection and we didn't need this symbol.) */
+ /* If this symbol is called and defined in a dynamic object, or it
+ is imported, then we need to set up global linkage code for it.
+ (Unless we did garbage collection and we didn't need this
+ symbol.) */
if ((h->flags & XCOFF_CALLED) != 0
- && (h->flags & XCOFF_DEF_REGULAR) == 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0
&& (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak)
&& h->root.root.string[0] == '.'
+ && h->descriptor != NULL
+ && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
+ || ((h->descriptor->flags & XCOFF_IMPORT) != 0
+ && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0))
&& (! xcoff_hash_table (ldinfo->info)->gc
|| (h->flags & XCOFF_MARK) != 0))
{
h->root.u.def.section = sec;
h->root.u.def.value = sec->_raw_size;
h->smclas = XMC_GL;
- sec->_raw_size += XCOFF_GLINK_SIZE;
+ h->flags |= XCOFF_DEF_REGULAR;
+ sec->_raw_size += bfd_xcoff_glink_code_size(ldinfo->output_bfd);
/* The global linkage code requires a TOC entry for the
- descriptor. */
+ descriptor. */
hds = h->descriptor;
BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined
|| hds->root.type == bfd_link_hash_undefweak)
- && (hds->flags & XCOFF_DEF_REGULAR) == 0
- && (hds->flags & XCOFF_REF_DYNAMIC) != 0);
+ && (hds->flags & XCOFF_DEF_REGULAR) == 0);
hds->flags |= XCOFF_MARK;
if (hds->toc_section == NULL)
{
+ int byte_size;
+
+ /* 32 vs 64
+ xcoff32 uses 4 bytes in the toc.
+ xcoff64 uses 8 bytes in the toc. */
+ if (bfd_xcoff_is_xcoff64 (ldinfo->output_bfd))
+ byte_size = 8;
+ else if (bfd_xcoff_is_xcoff32 (ldinfo->output_bfd))
+ byte_size = 4;
+ else
+ return FALSE;
+
hds->toc_section = xcoff_hash_table (ldinfo->info)->toc_section;
- hds->toc_offset = hds->toc_section->_raw_size;
- hds->toc_section->_raw_size += 4;
+ hds->u.toc_offset = hds->toc_section->_raw_size;
+ hds->toc_section->_raw_size += byte_size;
++xcoff_hash_table (ldinfo->info)->ldrel_count;
++hds->toc_section->reloc_count;
hds->indx = -2;
hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL;
/* We need to call xcoff_build_ldsyms recursively here,
- because we may already have passed hds on the traversal. */
+ because we may already have passed hds on the traversal. */
xcoff_build_ldsyms (hds, p);
}
}
+ /* If this symbol is exported, but not defined, we need to try to
+ define it. */
+ if ((h->flags & XCOFF_EXPORT) != 0
+ && (h->flags & XCOFF_IMPORT) == 0
+ && (h->flags & XCOFF_DEF_REGULAR) == 0
+ && (h->flags & XCOFF_DEF_DYNAMIC) == 0
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak))
+ {
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0
+ && (h->descriptor->root.type == bfd_link_hash_defined
+ || h->descriptor->root.type == bfd_link_hash_defweak))
+ {
+ asection *sec;
+
+ /* This is an undefined function descriptor associated with
+ a defined entry point. We can build up a function
+ descriptor ourselves. Believe it or not, the AIX linker
+ actually does this, and there are cases where we need to
+ do it as well. */
+ sec = xcoff_hash_table (ldinfo->info)->descriptor_section;
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = sec;
+ h->root.u.def.value = sec->_raw_size;
+ h->smclas = XMC_DS;
+ h->flags |= XCOFF_DEF_REGULAR;
+
+ /* The size of the function descriptor depends if this is an
+ xcoff32 (12) or xcoff64 (24). */
+ sec->_raw_size +=
+ bfd_xcoff_function_descriptor_size(ldinfo->output_bfd);
+
+ /* A function descriptor uses two relocs: one for the
+ associated code, and one for the TOC address. */
+ xcoff_hash_table (ldinfo->info)->ldrel_count += 2;
+ sec->reloc_count += 2;
+
+ /* We handle writing out the contents of the descriptor in
+ xcoff_write_global_symbol. */
+ }
+ else
+ {
+ (*_bfd_error_handler)
+ (_("warning: attempt to export undefined symbol `%s'"),
+ h->root.root.string);
+ h->ldsym = NULL;
+ return TRUE;
+ }
+ }
+
+ /* If this is still a common symbol, and it wasn't garbage
+ collected, we need to actually allocate space for it in the .bss
+ section. */
+ if (h->root.type == bfd_link_hash_common
+ && (! xcoff_hash_table (ldinfo->info)->gc
+ || (h->flags & XCOFF_MARK) != 0)
+ && h->root.u.c.p->section->_raw_size == 0)
+ {
+ BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section));
+ h->root.u.c.p->section->_raw_size = h->root.u.c.size;
+ }
+
/* We need to add a symbol to the .loader section if it is mentioned
in a reloc which we are copying to the .loader section and it was
- not defined, or if it is the entry point. */
+ not defined or common, or if it is the entry point, or if it is
+ being exported. */
if (((h->flags & XCOFF_LDREL) == 0
|| h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && (h->flags & XCOFF_ENTRY) == 0)
+ || h->root.type == bfd_link_hash_defweak
+ || h->root.type == bfd_link_hash_common)
+ && (h->flags & XCOFF_ENTRY) == 0
+ && (h->flags & XCOFF_EXPORT) == 0)
{
h->ldsym = NULL;
- return true;
+ return TRUE;
}
/* We don't need to add this symbol if we did garbage collection and
&& (h->flags & XCOFF_MARK) == 0)
{
h->ldsym = NULL;
- return true;
+ return TRUE;
}
/* We may have already processed this symbol due to the recursive
call above. */
if ((h->flags & XCOFF_BUILT_LDSYM) != 0)
- return true;
+ return TRUE;
/* We need to add this symbol to the .loader symbols. */
- /* h->ldsym will already have been allocated for an explicitly
- imported symbol. */
+ BFD_ASSERT (h->ldsym == NULL);
+ amt = sizeof (struct internal_ldsym);
+ h->ldsym = (struct internal_ldsym *) bfd_zalloc (ldinfo->output_bfd, amt);
if (h->ldsym == NULL)
{
- h->ldsym = ((struct internal_ldsym *)
- bfd_zalloc (ldinfo->output_bfd,
- sizeof (struct internal_ldsym)));
- if (h->ldsym == NULL)
- {
- ldinfo->failed = true;
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ ldinfo->failed = TRUE;
+ return FALSE;
}
+ if ((h->flags & XCOFF_IMPORT) != 0)
+ h->ldsym->l_ifile = h->ldindx;
+
/* The first 3 symbol table indices are reserved to indicate the
- sections. */
+ data, text and bss sections. */
h->ldindx = ldinfo->ldsym_count + 3;
++ldinfo->ldsym_count;
- len = strlen (h->root.root.string);
- if (len <= SYMNMLEN)
- strncpy (h->ldsym->_l._l_name, h->root.root.string, SYMNMLEN);
- else
+ if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo,
+ h->ldsym, h->root.root.string))
{
- if (ldinfo->string_size + len + 3 > ldinfo->string_alc)
- {
- size_t newalc;
- bfd_byte *newstrings;
-
- newalc = ldinfo->string_alc * 2;
- if (newalc == 0)
- newalc = 32;
- while (ldinfo->string_size + len + 3 > newalc)
- newalc *= 2;
-
- if (ldinfo->strings == NULL)
- newstrings = (bfd_byte *) malloc (newalc);
- else
- newstrings = ((bfd_byte *)
- realloc ((PTR) ldinfo->strings, newalc));
- if (newstrings == NULL)
- {
- ldinfo->failed = true;
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- ldinfo->string_alc = newalc;
- ldinfo->strings = newstrings;
- }
-
- bfd_put_16 (ldinfo->output_bfd, len + 1,
- ldinfo->strings + ldinfo->string_size);
- strcpy (ldinfo->strings + ldinfo->string_size + 2, h->root.root.string);
- h->ldsym->_l._l_l._l_zeroes = 0;
- h->ldsym->_l._l_l._l_offset = ldinfo->string_size + 2;
- ldinfo->string_size += len + 3;
+ return FALSE;
}
h->flags |= XCOFF_BUILT_LDSYM;
- return true;
+ return TRUE;
}
\f
/* Do the final link step. */
-boolean
+bfd_boolean
_bfd_xcoff_bfd_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
struct xcoff_final_link_info finfo;
asection *o;
struct bfd_link_order *p;
- size_t max_contents_size;
- size_t max_sym_count;
- size_t max_lineno_count;
- size_t max_reloc_count;
- size_t max_output_reloc_count;
+ bfd_size_type max_contents_size;
+ bfd_size_type max_sym_count;
+ bfd_size_type max_lineno_count;
+ bfd_size_type max_reloc_count;
+ bfd_size_type max_output_reloc_count;
file_ptr rel_filepos;
unsigned int relsz;
file_ptr line_filepos;
bfd *sub;
bfd_byte *external_relocs = NULL;
char strbuf[STRING_SIZE_SIZE];
+ file_ptr pos;
+ bfd_size_type amt;
+
+ if (info->shared)
+ abfd->flags |= DYNAMIC;
symesz = bfd_coff_symesz (abfd);
finfo.contents = NULL;
finfo.external_relocs = NULL;
- finfo.ldsym = ((struct external_ldsym *)
- (xcoff_hash_table (info)->loader_section->contents
- + LDHDRSZ));
- finfo.ldrel = ((struct external_ldrel *)
- (xcoff_hash_table (info)->loader_section->contents
- + LDHDRSZ
- + xcoff_hash_table (info)->ldhdr.l_nsyms * LDSYMSZ));
+ finfo.ldsym = (xcoff_hash_table (info)->loader_section->contents
+ + bfd_xcoff_ldhdrsz (abfd));
+ finfo.ldrel = (xcoff_hash_table (info)->loader_section->contents
+ + bfd_xcoff_ldhdrsz(abfd)
+ + (xcoff_hash_table (info)->ldhdr.l_nsyms
+ * bfd_xcoff_ldsymsz(abfd)));
xcoff_data (abfd)->coff.link_info = info;
if (finfo.strtab == NULL)
goto error_return;
+ /* Count the line number and relocation entries required for the
+ output file. Determine a few maximum sizes. */
+ max_contents_size = 0;
+ max_lineno_count = 0;
+ max_reloc_count = 0;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ o->reloc_count = 0;
+ o->lineno_count = 0;
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ if (p->type == bfd_indirect_link_order)
+ {
+ asection *sec;
+
+ sec = p->u.indirect.section;
+
+ /* Mark all sections which are to be included in the
+ link. This will normally be every section. We need
+ to do this so that we can identify any sections which
+ the linker has decided to not include. */
+ sec->linker_mark = TRUE;
+
+ if (info->strip == strip_none
+ || info->strip == strip_some)
+ o->lineno_count += sec->lineno_count;
+
+ o->reloc_count += sec->reloc_count;
+
+ if (sec->_raw_size > max_contents_size)
+ max_contents_size = sec->_raw_size;
+ if (sec->lineno_count > max_lineno_count)
+ max_lineno_count = sec->lineno_count;
+ if (coff_section_data (sec->owner, sec) != NULL
+ && xcoff_section_data (sec->owner, sec) != NULL
+ && (xcoff_section_data (sec->owner, sec)->lineno_count
+ > max_lineno_count))
+ max_lineno_count =
+ xcoff_section_data (sec->owner, sec)->lineno_count;
+ if (sec->reloc_count > max_reloc_count)
+ max_reloc_count = sec->reloc_count;
+ }
+ else if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ ++o->reloc_count;
+ }
+ }
+
/* Compute the file positions for all the sections. */
if (abfd->output_has_begun)
{
file_align = xcoff_hash_table (info)->file_align;
if (file_align != 0)
{
- boolean saw_contents;
+ bfd_boolean saw_contents;
int indx;
asection **op;
file_ptr sofar;
/* Insert .pad sections before every section which has
- contents and is loaded, if it is preceded by some other
- section which has contents and is loaded. */
- saw_contents = true;
+ contents and is loaded, if it is preceded by some other
+ section which has contents and is loaded. */
+ saw_contents = TRUE;
for (op = &abfd->sections; *op != NULL; op = &(*op)->next)
{
- (*op)->target_index = indx;
if (strcmp ((*op)->name, ".pad") == 0)
- saw_contents = false;
+ saw_contents = FALSE;
else if (((*op)->flags & SEC_HAS_CONTENTS) != 0
&& ((*op)->flags & SEC_LOAD) != 0)
{
if (! saw_contents)
- saw_contents = true;
+ saw_contents = TRUE;
else
{
- asection *n, *hold;
+ asection *n, **st;
- hold = *op;
- *op = NULL;
+ /* Create a pad section and place it before the section
+ that needs padding. This requires unlinking and
+ relinking the bfd's section list. */
+
+ st = abfd->section_tail;
n = bfd_make_section_anyway (abfd, ".pad");
- BFD_ASSERT (*op == n);
- n->next = hold;
n->flags = SEC_HAS_CONTENTS;
n->alignment_power = 0;
- saw_contents = false;
+
+ BFD_ASSERT (*st == n);
+ bfd_section_list_remove (abfd, st);
+ bfd_section_list_insert (abfd, op, n);
+
+ op = &n->next;
+ saw_contents = FALSE;
}
}
}
/* Reset the section indices after inserting the new
- sections. */
+ sections. */
indx = 0;
for (o = abfd->sections; o != NULL; o = o->next)
{
BFD_ASSERT ((unsigned int) indx == abfd->section_count);
/* Work out appropriate sizes for the .pad sections to force
- each section to land on a page boundary. This bit of
- code knows what compute_section_file_positions is going
- to do. */
+ each section to land on a page boundary. This bit of
+ code knows what compute_section_file_positions is going
+ to do. */
sofar = bfd_coff_filhsz (abfd);
- if ((abfd->flags & EXEC_P) != 0)
- sofar += bfd_coff_aoutsz (abfd);
- else
- {
- /* FIXME. */
- sofar += 28;
- }
+ sofar += bfd_coff_aoutsz (abfd);
sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ if ((bfd_xcoff_is_reloc_count_overflow
+ (abfd, (bfd_vma) o->reloc_count))
+ || (bfd_xcoff_is_lineno_count_overflow
+ (abfd, (bfd_vma) o->lineno_count)))
+ /* 64 does not overflow, need to check if 32 does */
+ sofar += bfd_coff_scnhsz (abfd);
for (o = abfd->sections; o != NULL; o = o->next)
{
}
}
- bfd_coff_compute_section_file_positions (abfd);
- }
-
- /* Count the line numbers and relocation entries required for the
- output file. Set the file positions for the relocs. */
- rel_filepos = obj_relocbase (abfd);
- relsz = bfd_coff_relsz (abfd);
- max_contents_size = 0;
- max_lineno_count = 0;
- max_reloc_count = 0;
- for (o = abfd->sections; o != NULL; o = o->next)
- {
- o->reloc_count = 0;
- o->lineno_count = 0;
- for (p = o->link_order_head; p != NULL; p = p->next)
- {
- if (p->type == bfd_indirect_link_order)
- {
- asection *sec;
-
- sec = p->u.indirect.section;
-
- if (info->strip == strip_none
- || info->strip == strip_some)
- o->lineno_count += sec->lineno_count;
-
- o->reloc_count += sec->reloc_count;
-
- if (sec->_raw_size > max_contents_size)
- max_contents_size = sec->_raw_size;
- if (sec->lineno_count > max_lineno_count)
- max_lineno_count = sec->lineno_count;
- if (sec->reloc_count > max_reloc_count)
- max_reloc_count = sec->reloc_count;
- }
- else if (p->type == bfd_section_reloc_link_order
- || p->type == bfd_symbol_reloc_link_order)
- ++o->reloc_count;
- }
- if (o->reloc_count == 0)
- o->rel_filepos = 0;
- else
- {
- o->flags |= SEC_RELOC;
- o->rel_filepos = rel_filepos;
- rel_filepos += o->reloc_count * relsz;
- }
+ if (! bfd_coff_compute_section_file_positions (abfd))
+ goto error_return;
}
/* Allocate space for the pointers we need to keep for the relocs. */
/* We use section_count + 1, rather than section_count, because
the target_index fields are 1 based. */
- finfo.section_info = ((struct xcoff_link_section_info *)
- malloc ((abfd->section_count + 1)
- * sizeof (struct xcoff_link_section_info)));
+ amt = abfd->section_count + 1;
+ amt *= sizeof (struct xcoff_link_section_info);
+ finfo.section_info = (struct xcoff_link_section_info *) bfd_malloc (amt);
if (finfo.section_info == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
for (i = 0; i <= abfd->section_count; i++)
{
finfo.section_info[i].relocs = NULL;
finfo.section_info[i].rel_hashes = NULL;
+ finfo.section_info[i].toc_rel_hashes = NULL;
}
}
- /* We now know the size of the relocs, so we can determine the file
- positions of the line numbers. */
- line_filepos = rel_filepos;
- linesz = bfd_coff_linesz (abfd);
+ /* Set the file positions for the relocs. */
+ rel_filepos = obj_relocbase (abfd);
+ relsz = bfd_coff_relsz (abfd);
max_output_reloc_count = 0;
for (o = abfd->sections; o != NULL; o = o->next)
{
- if (o->lineno_count == 0)
- o->line_filepos = 0;
+ if (o->reloc_count == 0)
+ o->rel_filepos = 0;
else
{
- o->line_filepos = line_filepos;
- line_filepos += o->lineno_count * linesz;
- }
+ /* A stripped file has no relocs. However, we still
+ allocate the buffers, so that later code doesn't have to
+ worry about whether we are stripping or not. */
+ if (info->strip == strip_all)
+ o->rel_filepos = 0;
+ else
+ {
+ o->flags |= SEC_RELOC;
+ o->rel_filepos = rel_filepos;
+ rel_filepos += o->reloc_count * relsz;
+ }
- if (o->reloc_count != 0)
- {
/* We don't know the indices of global symbols until we have
- written out all the local symbols. For each section in
- the output file, we keep an array of pointers to hash
- table entries. Each entry in the array corresponds to a
- reloc. When we find a reloc against a global symbol, we
- set the corresponding entry in this array so that we can
- fix up the symbol index after we have written out all the
- local symbols.
+ written out all the local symbols. For each section in
+ the output file, we keep an array of pointers to hash
+ table entries. Each entry in the array corresponds to a
+ reloc. When we find a reloc against a global symbol, we
+ set the corresponding entry in this array so that we can
+ fix up the symbol index after we have written out all the
+ local symbols.
Because of this problem, we also keep the relocs in
memory until the end of the link. This wastes memory.
We could backpatch the file later, I suppose, although it
would be slow. */
+ amt = o->reloc_count;
+ amt *= sizeof (struct internal_reloc);
finfo.section_info[o->target_index].relocs =
- ((struct internal_reloc *)
- malloc (o->reloc_count * sizeof (struct internal_reloc)));
+ (struct internal_reloc *) bfd_malloc (amt);
+
+ amt = o->reloc_count;
+ amt *= sizeof (struct xcoff_link_hash_entry *);
finfo.section_info[o->target_index].rel_hashes =
- ((struct xcoff_link_hash_entry **)
- malloc (o->reloc_count
- * sizeof (struct xcoff_link_hash_entry *)));
+ (struct xcoff_link_hash_entry **) bfd_malloc (amt);
+
if (finfo.section_info[o->target_index].relocs == NULL
|| finfo.section_info[o->target_index].rel_hashes == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (o->reloc_count > max_output_reloc_count)
max_output_reloc_count = o->reloc_count;
}
-
- /* Reset the reloc and lineno counts, so that we can use them to
- count the number of entries we have output so far. */
- o->reloc_count = 0;
- o->lineno_count = 0;
}
- obj_sym_filepos (abfd) = line_filepos;
-
- /* Figure out the largest number of symbols in an input BFD. Take
- the opportunity to clear the output_has_begun fields of all the
- input BFD's. We want at least 4 symbols, since that is the
- number which xcoff_write_global_symbol may need. */
- max_sym_count = 4;
- for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
- {
- size_t sz;
-
- sub->output_has_begun = false;
- sz = obj_raw_syment_count (sub);
+ /* We now know the size of the relocs, so we can determine the file
+ positions of the line numbers. */
+ line_filepos = rel_filepos;
+ finfo.line_filepos = line_filepos;
+ linesz = bfd_coff_linesz (abfd);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if (o->lineno_count == 0)
+ o->line_filepos = 0;
+ else
+ {
+ o->line_filepos = line_filepos;
+ line_filepos += o->lineno_count * linesz;
+ }
+
+ /* Reset the reloc and lineno counts, so that we can use them to
+ count the number of entries we have output so far. */
+ o->reloc_count = 0;
+ o->lineno_count = 0;
+ }
+
+ obj_sym_filepos (abfd) = line_filepos;
+
+ /* Figure out the largest number of symbols in an input BFD. Take
+ the opportunity to clear the output_has_begun fields of all the
+ input BFD's. We want at least 6 symbols, since that is the
+ number which xcoff_write_global_symbol may need. */
+ max_sym_count = 6;
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ {
+ bfd_size_type sz;
+
+ sub->output_has_begun = FALSE;
+ sz = obj_raw_syment_count (sub);
if (sz > max_sym_count)
max_sym_count = sz;
}
/* Allocate some buffers used while linking. */
- finfo.internal_syms = ((struct internal_syment *)
- malloc (max_sym_count
- * sizeof (struct internal_syment)));
- finfo.sym_indices = (long *) malloc (max_sym_count * sizeof (long));
- finfo.outsyms = ((bfd_byte *)
- malloc ((size_t) ((max_sym_count + 1) * symesz)));
- finfo.linenos = (bfd_byte *) malloc (max_lineno_count
- * bfd_coff_linesz (abfd));
- finfo.contents = (bfd_byte *) malloc (max_contents_size);
- finfo.external_relocs = (bfd_byte *) malloc (max_reloc_count * relsz);
+ amt = max_sym_count * sizeof (struct internal_syment);
+ finfo.internal_syms = (struct internal_syment *) bfd_malloc (amt);
+
+ amt = max_sym_count * sizeof (long);
+ finfo.sym_indices = (long *) bfd_malloc (amt);
+
+ amt = (max_sym_count + 1) * symesz;
+ finfo.outsyms = (bfd_byte *) bfd_malloc (amt);
+
+ amt = max_lineno_count * bfd_coff_linesz (abfd);
+ finfo.linenos = (bfd_byte *) bfd_malloc (amt);
+
+ amt = max_contents_size;
+ finfo.contents = (bfd_byte *) bfd_malloc (amt);
+
+ amt = max_reloc_count * relsz;
+ finfo.external_relocs = (bfd_byte *) bfd_malloc (amt);
+
if ((finfo.internal_syms == NULL && max_sym_count > 0)
|| (finfo.sym_indices == NULL && max_sym_count > 0)
|| finfo.outsyms == NULL
|| (finfo.linenos == NULL && max_lineno_count > 0)
|| (finfo.contents == NULL && max_contents_size > 0)
|| (finfo.external_relocs == NULL && max_reloc_count > 0))
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
obj_raw_syment_count (abfd) = 0;
xcoff_data (abfd)->toc = (bfd_vma) -1;
{
if (! xcoff_link_input_bfd (&finfo, sub))
goto error_return;
- sub->output_has_begun = true;
+ sub->output_has_begun = TRUE;
}
}
else if (p->type == bfd_section_reloc_link_order
}
}
+
/* Free up the buffers used by xcoff_link_input_bfd. */
if (finfo.internal_syms != NULL)
it out again. */
if (finfo.last_file_index != -1)
{
- finfo.last_file.n_value = -1;
+ finfo.last_file.n_value = -(bfd_vma) 1;
bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file,
(PTR) finfo.outsyms);
- if (bfd_seek (abfd,
- (obj_sym_filepos (abfd)
- + finfo.last_file_index * symesz),
- SEEK_SET) != 0
- || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz)
+ pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
goto error_return;
}
/* Now that we have written out all the global symbols, we know the
symbol indices to use for relocs against them, and we can finally
write out the relocs. */
- external_relocs = (bfd_byte *) malloc (max_output_reloc_count * relsz);
+ amt = max_output_reloc_count * relsz;
+ external_relocs = (bfd_byte *) bfd_malloc (amt);
if (external_relocs == NULL && max_output_reloc_count != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
for (o = abfd->sections; o != NULL; o = o->next)
{
struct internal_reloc *irel;
struct internal_reloc *irelend;
struct xcoff_link_hash_entry **rel_hash;
+ struct xcoff_toc_rel_hash *toc_rel_hash;
bfd_byte *erel;
+ bfd_size_type rel_size;
+
+ /* A stripped file has no relocs. */
+ if (info->strip == strip_all)
+ {
+ o->reloc_count = 0;
+ continue;
+ }
if (o->reloc_count == 0)
continue;
}
}
+ for (toc_rel_hash = finfo.section_info[o->target_index].toc_rel_hashes;
+ toc_rel_hash != NULL;
+ toc_rel_hash = toc_rel_hash->next)
+ {
+ if (toc_rel_hash->h->u.toc_indx < 0)
+ {
+ if (! ((*info->callbacks->unattached_reloc)
+ (info, toc_rel_hash->h->root.root.string,
+ (bfd *) NULL, o, toc_rel_hash->rel->r_vaddr)))
+ goto error_return;
+ toc_rel_hash->h->u.toc_indx = 0;
+ }
+ toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx;
+ }
+
/* XCOFF requires that the relocs be sorted by address. We tend
- to produce them in the order in which their containing csects
- appear in the symbol table, which is not necessarily by
- address. So we sort them here. There may be a better way to
- do this. */
+ to produce them in the order in which their containing csects
+ appear in the symbol table, which is not necessarily by
+ address. So we sort them here. There may be a better way to
+ do this. */
qsort ((PTR) finfo.section_info[o->target_index].relocs,
o->reloc_count, sizeof (struct internal_reloc),
xcoff_sort_relocs);
for (; irel < irelend; irel++, rel_hash++, erel += relsz)
bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel);
+ rel_size = relsz * o->reloc_count;
if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0
- || bfd_write ((PTR) external_relocs, relsz, o->reloc_count,
- abfd) != relsz * o->reloc_count)
+ || bfd_bwrite ((PTR) external_relocs, rel_size, abfd) != rel_size)
goto error_return;
}
== (xcoff_hash_table (info)->loader_section->contents
+ xcoff_hash_table (info)->ldhdr.l_impoff));
o = xcoff_hash_table (info)->loader_section;
- if (! bfd_set_section_contents (abfd, o->output_section,
- o->contents, o->output_offset,
- o->_raw_size))
+ if (! bfd_set_section_contents (abfd, o->output_section, o->contents,
+ (file_ptr) o->output_offset, o->_raw_size))
goto error_return;
- /* Write out the global linkage section and the toc section. */
+ /* Write out the magic sections. */
o = xcoff_hash_table (info)->linkage_section;
if (o->_raw_size > 0
&& ! bfd_set_section_contents (abfd, o->output_section, o->contents,
- o->output_offset, o->_raw_size))
+ (file_ptr) o->output_offset,
+ o->_raw_size))
goto error_return;
o = xcoff_hash_table (info)->toc_section;
if (o->_raw_size > 0
&& ! bfd_set_section_contents (abfd, o->output_section, o->contents,
- o->output_offset, o->_raw_size))
+ (file_ptr) o->output_offset,
+ o->_raw_size))
+ goto error_return;
+ o = xcoff_hash_table (info)->descriptor_section;
+ if (o->_raw_size > 0
+ && ! bfd_set_section_contents (abfd, o->output_section, o->contents,
+ (file_ptr) o->output_offset,
+ o->_raw_size))
goto error_return;
/* Write out the string table. */
- if (bfd_seek (abfd,
- (obj_sym_filepos (abfd)
- + obj_raw_syment_count (abfd) * symesz),
- SEEK_SET) != 0)
+ pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0)
goto error_return;
- bfd_h_put_32 (abfd,
- _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
- (bfd_byte *) strbuf);
- if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE)
+ H_PUT_32 (abfd,
+ _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
+ strbuf);
+ amt = STRING_SIZE_SIZE;
+ if (bfd_bwrite (strbuf, amt, abfd) != amt)
goto error_return;
if (! _bfd_stringtab_emit (abfd, finfo.strtab))
goto error_return;
debug_strtab = xcoff_hash_table (info)->debug_strtab;
BFD_ASSERT (o->output_section->_raw_size - o->output_offset
>= _bfd_stringtab_size (debug_strtab));
- if (bfd_seek (abfd,
- o->output_section->filepos + o->output_offset,
- SEEK_SET) != 0)
+ pos = o->output_section->filepos + o->output_offset;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0)
goto error_return;
if (! _bfd_stringtab_emit (abfd, debug_strtab))
goto error_return;
not try to write out the symbols. */
bfd_get_symcount (abfd) = 0;
- return true;
+ return TRUE;
error_return:
if (finfo.strtab != NULL)
_bfd_stringtab_free (finfo.strtab);
+
if (finfo.section_info != NULL)
{
unsigned int i;
}
free (finfo.section_info);
}
+
if (finfo.internal_syms != NULL)
free (finfo.internal_syms);
if (finfo.sym_indices != NULL)
free (finfo.external_relocs);
if (external_relocs != NULL)
free (external_relocs);
- return false;
+ return FALSE;
}
/* Link an input file into the linker output file. This function
handles all the sections and relocations of the input file at once. */
-static boolean
+static bfd_boolean
xcoff_link_input_bfd (finfo, input_bfd)
struct xcoff_final_link_info *finfo;
bfd *input_bfd;
bfd_size_type syment_base;
unsigned int n_tmask;
unsigned int n_btshft;
- boolean copy, hash;
+ bfd_boolean copy, hash;
bfd_size_type isymesz;
bfd_size_type osymesz;
bfd_size_type linesz;
bfd_byte *esym;
bfd_byte *esym_end;
+ struct xcoff_link_hash_entry **sym_hash;
struct internal_syment *isymp;
asection **csectpp;
unsigned long *debug_index;
long *indexp;
unsigned long output_index;
bfd_byte *outsym;
- struct xcoff_link_hash_entry **sym_hash;
- boolean keep_syms;
+ unsigned int incls;
+ asection *oline;
+ bfd_boolean keep_syms;
asection *o;
/* We can just skip DYNAMIC files, unless this is a static link. */
if ((input_bfd->flags & DYNAMIC) != 0
&& ! finfo->info->static_link)
- return true;
+ return TRUE;
/* Move all the symbols to the output file. */
#define N_TMASK n_tmask
#define N_BTSHFT n_btshft
- copy = false;
+ copy = FALSE;
if (! finfo->info->keep_memory)
- copy = true;
- hash = true;
+ copy = TRUE;
+ hash = TRUE;
if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
- hash = false;
+ hash = FALSE;
if (! _bfd_coff_get_external_symbols (input_bfd))
- return false;
+ return FALSE;
esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
indexp = finfo->sym_indices;
output_index = syment_base;
outsym = finfo->outsyms;
+ incls = 0;
+ oline = NULL;
while (esym < esym_end)
{
+
struct internal_syment isym;
union internal_auxent aux;
int smtyp = 0;
- boolean skip;
- boolean require;
+ bfd_boolean skip;
+ bfd_boolean require;
int add;
bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp);
/* If this is a C_EXT or C_HIDEXT symbol, we need the csect
- information. */
+ information. */
if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT)
{
BFD_ASSERT (isymp->n_numaux > 0);
isymp->n_type, isymp->n_sclass,
isymp->n_numaux - 1, isymp->n_numaux,
(PTR) &aux);
+
smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp);
}
isym = *isymp;
/* If this symbol is in the .loader section, swap out the
- .loader symbol information. If this is an external symbol
- reference to a defined symbol, though, then wait until we get
- to the definition. */
+ .loader symbol information. If this is an external symbol
+ reference to a defined symbol, though, then wait until we get
+ to the definition. */
if (isym.n_sclass == C_EXT
&& *sym_hash != NULL
&& (*sym_hash)->ldsym != NULL
ldsym->l_smtype = smtyp;
if (((h->flags & XCOFF_DEF_REGULAR) == 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_IMPORT) != 0)
ldsym->l_smtype |= L_IMPORT;
if (((h->flags & XCOFF_DEF_REGULAR) != 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_EXPORT) != 0)
ldsym->l_smtype |= L_EXPORT;
if ((h->flags & XCOFF_ENTRY) != 0)
ldsym->l_parm = 0;
BFD_ASSERT (h->ldindx >= 0);
- BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym));
- xcoff_swap_ldsym_out (finfo->output_bfd, ldsym,
- finfo->ldsym + h->ldindx - 3);
+ bfd_xcoff_swap_ldsym_out (finfo->output_bfd, ldsym,
+ (finfo->ldsym
+ + ((h->ldindx - 3)
+ * bfd_xcoff_ldsymsz (finfo->output_bfd))));
h->ldsym = NULL;
+
+ /* Fill in snentry now that we know the target_index. */
+ if ((h->flags & XCOFF_ENTRY) != 0
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ xcoff_data (output_bfd)->snentry =
+ h->root.u.def.section->output_section->target_index;
+ }
}
*indexp = -1;
- skip = false;
- require = false;
+ skip = FALSE;
+ require = FALSE;
add = 1 + isym.n_numaux;
/* If we are skipping this csect, we want to skip this symbol. */
if (*csectpp == NULL)
- skip = true;
+ skip = TRUE;
/* If we garbage collected this csect, we want to skip this
- symbol. */
+ symbol. */
if (! skip
&& xcoff_hash_table (finfo->info)->gc
&& ((*csectpp)->flags & SEC_MARK) == 0
&& *csectpp != bfd_abs_section_ptr)
- skip = true;
+ skip = TRUE;
/* An XCOFF linker always skips C_STAT symbols. */
if (! skip
&& isymp->n_sclass == C_STAT)
- skip = true;
+ skip = TRUE;
/* We skip all but the first TOC anchor. */
if (! skip
&& aux.x_csect.x_smclas == XMC_TC0)
{
if (finfo->toc_symindx != -1)
- skip = true;
+ skip = TRUE;
else
{
+ bfd_vma tocval, tocend;
+ bfd *inp;
+
+ tocval = ((*csectpp)->output_section->vma
+ + (*csectpp)->output_offset
+ + isym.n_value
+ - (*csectpp)->vma);
+
+ /* We want to find out if tocval is a good value to use
+ as the TOC anchor--that is, whether we can access all
+ of the TOC using a 16 bit offset from tocval. This
+ test assumes that the TOC comes at the end of the
+ output section, as it does in the default linker
+ script. */
+ tocend = ((*csectpp)->output_section->vma
+ + (*csectpp)->output_section->_raw_size);
+ for (inp = finfo->info->input_bfds;
+ inp != NULL;
+ inp = inp->link_next)
+ {
+
+ for (o = inp->sections; o != NULL; o = o->next)
+ if (strcmp (o->name, ".tocbss") == 0)
+ {
+ bfd_vma new_toc_end;
+ new_toc_end = (o->output_section->vma
+ + o->output_offset
+ + o->_cooked_size);
+ if (new_toc_end > tocend)
+ tocend = new_toc_end;
+ }
+
+ }
+
+ if (tocval + 0x10000 < tocend)
+ {
+ (*_bfd_error_handler)
+ (_("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc when compiling"),
+ (unsigned long) (tocend - tocval));
+ bfd_set_error (bfd_error_file_too_big);
+ return FALSE;
+ }
+
+ if (tocval + 0x8000 < tocend)
+ {
+ bfd_vma tocadd;
+
+ tocadd = tocend - (tocval + 0x8000);
+ tocval += tocadd;
+ isym.n_value += tocadd;
+ }
+
finfo->toc_symindx = output_index;
- xcoff_data (finfo->output_bfd)->toc =
- ((*csectpp)->output_section->vma
- + (*csectpp)->output_offset
- + isym.n_value
- - (*csectpp)->vma);
- require = true;
+ xcoff_data (finfo->output_bfd)->toc = tocval;
+ xcoff_data (finfo->output_bfd)->sntoc =
+ (*csectpp)->output_section->target_index;
+ require = TRUE;
+
}
}
/* If we are stripping all symbols, we want to skip this one. */
if (! skip
&& finfo->info->strip == strip_all)
- skip = true;
+ skip = TRUE;
/* We can skip resolved external references. */
if (! skip
&& isym.n_sclass == C_EXT
&& smtyp == XTY_ER
&& (*sym_hash)->root.type != bfd_link_hash_undefined)
- skip = true;
+ skip = TRUE;
/* We can skip common symbols if they got defined somewhere
- else. */
+ else. */
if (! skip
&& isym.n_sclass == C_EXT
&& smtyp == XTY_CM
- && ((*sym_hash)->flags & XCOFF_DEF_REGULAR) != 0)
- skip = true;
+ && ((*sym_hash)->root.type != bfd_link_hash_common
+ || (*sym_hash)->root.u.c.p->section != *csectpp)
+ && ((*sym_hash)->root.type != bfd_link_hash_defined
+ || (*sym_hash)->root.u.def.section != *csectpp))
+ skip = TRUE;
/* Skip local symbols if we are discarding them. */
if (! skip
&& isym.n_sclass != C_EXT
&& (isym.n_sclass != C_HIDEXT
|| smtyp != XTY_SD))
- skip = true;
+ skip = TRUE;
/* If we stripping debugging symbols, and this is a debugging
- symbol, then skip it. */
+ symbol, then skip it. */
if (! skip
&& finfo->info->strip == strip_debugger
&& isym.n_scnum == N_DEBUG)
- skip = true;
+ skip = TRUE;
/* If some symbols are stripped based on the name, work out the
name and decide whether to skip this symbol. We don't handle
char buf[SYMNMLEN + 1];
name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
+
if (name == NULL)
- return false;
+ return FALSE;
if ((finfo->info->strip == strip_some
- && (bfd_hash_lookup (finfo->info->keep_hash, name, false,
- false) == NULL))
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE,
+ FALSE) == NULL))
|| (finfo->info->discard == discard_l
&& (isym.n_sclass != C_EXT
&& (isym.n_sclass != C_HIDEXT
|| smtyp != XTY_SD))
- && strncmp (name, finfo->info->lprefix,
- finfo->info->lprefix_len) == 0))
- skip = true;
+ && bfd_is_local_label_name (input_bfd, name)))
+ skip = TRUE;
}
- /* On the other hand, we can't skip global symbols which have
- relocs against them. */
- if (skip
- && isym.n_sclass == C_EXT
- && (*sym_hash)->indx == -2
- && finfo->info->strip != strip_all)
- skip = false;
-
/* We can not skip the first TOC anchor. */
if (skip
&& require
&& finfo->info->strip != strip_all)
- skip = false;
+ skip = FALSE;
/* We now know whether we are to skip this symbol or not. */
if (! skip)
name = _bfd_coff_internal_syment_name (input_bfd, &isym,
(char *) NULL);
+
if (name == NULL)
- return false;
+ return FALSE;
indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy);
if (indx == (bfd_size_type) -1)
- return false;
+ return FALSE;
isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
}
}
- if (isym.n_sclass == C_BSTAT)
- {
- unsigned long indx;
-
- /* The value of a C_BSTAT symbol is the symbol table
- index of the containing csect. */
-
- indx = isym.n_value;
- if (indx < obj_raw_syment_count (input_bfd))
- {
- long symindx;
-
- symindx = finfo->sym_indices[indx];
- if (symindx < 0)
- isym.n_value = 0;
- else
- isym.n_value = symindx;
- }
- }
- else if (isym.n_scnum > 0)
+ if (isym.n_sclass != C_BSTAT
+ && isym.n_sclass != C_ESTAT
+ && isym.n_sclass != C_DECL
+ && isym.n_scnum > 0)
{
isym.n_scnum = (*csectpp)->output_section->target_index;
isym.n_value += ((*csectpp)->output_section->vma
if (isym.n_sclass == C_FILE)
{
if (finfo->last_file_index != -1
- && finfo->last_file.n_value != (long) output_index)
+ && finfo->last_file.n_value != (bfd_vma) output_index)
{
/* We must correct the value of the last C_FILE entry. */
finfo->last_file.n_value = output_index;
/* We have already written out the last C_FILE
symbol. We need to write it out again. We
borrow *outsym temporarily. */
+ file_ptr pos;
+
bfd_coff_swap_sym_out (output_bfd,
(PTR) &finfo->last_file,
(PTR) outsym);
- if (bfd_seek (output_bfd,
- (obj_sym_filepos (output_bfd)
- + finfo->last_file_index * osymesz),
- SEEK_SET) != 0
- || (bfd_write (outsym, osymesz, 1, output_bfd)
+
+ pos = obj_sym_filepos (output_bfd);
+ pos += finfo->last_file_index * osymesz;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || (bfd_bwrite (outsym, osymesz, output_bfd)
!= osymesz))
- return false;
+ return FALSE;
}
}
finfo->last_file = isym;
}
+ /* The value of a C_BINCL or C_EINCL symbol is a file offset
+ into the line numbers. We update the symbol values when
+ we handle the line numbers. */
+ if (isym.n_sclass == C_BINCL
+ || isym.n_sclass == C_EINCL)
+ {
+ isym.n_value = finfo->line_filepos;
+ ++incls;
+ }
+
/* Output the symbol. */
bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym);
h->indx = output_index;
}
+ /* If this is a symbol in the TOC which we may have merged
+ (class XMC_TC), remember the symbol index of the TOC
+ symbol. */
+ if (isym.n_sclass == C_HIDEXT
+ && aux.x_csect.x_smclas == XMC_TC
+ && *sym_hash != NULL)
+ {
+ BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0);
+ BFD_ASSERT ((*sym_hash)->toc_section != NULL);
+ (*sym_hash)->u.toc_indx = output_index;
+ }
+
output_index += add;
outsym += add * osymesz;
}
*indexp++ = -1;
}
- /* Fix up the aux entries. This must be done in a separate pass,
- because we don't know the correct symbol indices until we have
- already decided which symbols we are going to keep. */
+ /* Fix up the aux entries and the C_BSTAT symbols. This must be
+ done in a separate pass, because we don't know the correct symbol
+ indices until we have already decided which symbols we are going
+ to keep. */
esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
{
int i;
+ if (isymp->n_sclass == C_BSTAT)
+ {
+ struct internal_syment isym;
+
+ bfd_vma indx;
+
+ /* The value of a C_BSTAT symbol is the symbol table
+ index of the containing csect. */
+ bfd_coff_swap_sym_in (output_bfd, (PTR) outsym, (PTR) &isym);
+ indx = isym.n_value;
+ if (indx < obj_raw_syment_count (input_bfd))
+ {
+ long symindx;
+
+ symindx = finfo->sym_indices[indx];
+ if (symindx < 0)
+ isym.n_value = 0;
+ else
+ isym.n_value = symindx;
+ bfd_coff_swap_sym_out (output_bfd, (PTR) &isym,
+ (PTR) outsym);
+ }
+ }
+
esym += isymesz;
outsym += osymesz;
{
strings = _bfd_coff_read_string_table (input_bfd);
if (strings == NULL)
- return false;
+ return FALSE;
}
filename = strings + aux.x_file.x_n.x_offset;
indx = _bfd_stringtab_add (finfo->strtab, filename,
hash, copy);
if (indx == (bfd_size_type) -1)
- return false;
+ return FALSE;
aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx;
}
}
|| isymp->n_sclass == C_HIDEXT)
&& i + 1 == isymp->n_numaux)
{
+
/* We don't support type checking. I don't know if
- anybody does. */
+ anybody does. */
aux.x_csect.x_parmhash = 0;
/* I don't think anybody uses these fields, but we'd
- better clobber them just in case. */
+ better clobber them just in case. */
aux.x_csect.x_stab = 0;
aux.x_csect.x_snstab = 0;
+
if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD)
{
unsigned long indx;
symindx = finfo->sym_indices[indx];
if (symindx < 0)
- aux.x_sym.x_tagndx.l = 0;
+ {
+ aux.x_csect.x_scnlen.l = 0;
+ }
else
- aux.x_sym.x_tagndx.l = symindx;
+ {
+ aux.x_csect.x_scnlen.l = symindx;
+ }
}
}
}
if (ISFCN (isymp->n_type)
|| ISTAG (isymp->n_sclass)
- || isymp->n_sclass == C_BLOCK)
+ || isymp->n_sclass == C_BLOCK
+ || isymp->n_sclass == C_FCN)
{
indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.l;
if (indx > 0
&& indx < obj_raw_syment_count (input_bfd))
{
/* We look forward through the symbol for
- the index of the next symbol we are going
- to include. I don't know if this is
- entirely right. */
+ the index of the next symbol we are going
+ to include. I don't know if this is
+ entirely right. */
while (finfo->sym_indices[indx] < 0
&& indx < obj_raw_syment_count (input_bfd))
++indx;
else
indx = finfo->sym_indices[indx];
aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx;
+
}
}
else
aux.x_sym.x_tagndx.l = symindx;
}
+
}
/* Copy over the line numbers, unless we are stripping
else
{
asection *enclosing;
- bfd_size_type linoff;
+ unsigned int enc_count;
+ bfd_signed_vma linoff;
struct internal_lineno lin;
o = *csectpp;
enclosing = xcoff_section_data (abfd, o)->enclosing;
+ enc_count = xcoff_section_data (abfd, o)->lineno_count;
+ if (oline != enclosing)
+ {
+ file_ptr pos = enclosing->line_filepos;
+ bfd_size_type amt = linesz * enc_count;
+ if (bfd_seek (input_bfd, pos, SEEK_SET) != 0
+ || (bfd_bread (finfo->linenos, amt, input_bfd)
+ != amt))
+ return FALSE;
+ oline = enclosing;
+ }
+
linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr
- enclosing->line_filepos);
- if (bfd_seek (input_bfd,
- enclosing->line_filepos + linoff,
- SEEK_SET != 0)
- || (bfd_read (finfo->linenos, linesz,
- o->lineno_count, input_bfd)
- != linesz * o->lineno_count))
- return false;
-
bfd_coff_swap_lineno_in (input_bfd,
- (PTR) finfo->linenos,
+ (PTR) (finfo->linenos + linoff),
(PTR) &lin);
if (lin.l_lnno != 0
|| ((bfd_size_type) lin.l_addr.l_symndx
lin.l_addr.l_symndx = *indexp;
bfd_coff_swap_lineno_out (output_bfd, (PTR) &lin,
- (PTR) finfo->linenos);
+ (PTR) (finfo->linenos
+ + linoff));
linpend = (finfo->linenos
- + o->lineno_count * linesz);
+ + enc_count * linesz);
offset = (o->output_section->vma
+ o->output_offset
- o->vma);
- for (linp = finfo->linenos + linesz;
+ for (linp = finfo->linenos + linoff + linesz;
linp < linpend;
linp += linesz)
{
(PTR) linp);
}
- count = (linp - finfo->linenos) / linesz;
+ count = (linp - (finfo->linenos + linoff)) / linesz;
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr =
(o->output_section->line_filepos
if (bfd_seek (output_bfd,
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr,
SEEK_SET) != 0
- || (bfd_write (finfo->linenos, linesz, count,
- output_bfd)
+ || (bfd_bwrite (finfo->linenos + linoff,
+ linesz * count, output_bfd)
!= linesz * count))
- return false;
+ return FALSE;
o->output_section->lineno_count += count;
+
+ if (incls > 0)
+ {
+ struct internal_syment *iisp, *iispend;
+ long *iindp;
+ bfd_byte *oos;
+ int iiadd;
+
+ /* Update any C_BINCL or C_EINCL symbols
+ that refer to a line number in the
+ range we just output. */
+ iisp = finfo->internal_syms;
+ iispend = (iisp
+ + obj_raw_syment_count (input_bfd));
+ iindp = finfo->sym_indices;
+ oos = finfo->outsyms;
+ while (iisp < iispend)
+ {
+ if (*iindp >= 0
+ && (iisp->n_sclass == C_BINCL
+ || iisp->n_sclass == C_EINCL)
+ && ((bfd_size_type) iisp->n_value
+ >= (bfd_size_type)(enclosing->line_filepos + linoff))
+ && ((bfd_size_type) iisp->n_value
+ < (enclosing->line_filepos
+ + enc_count * linesz)))
+ {
+ struct internal_syment iis;
+
+ bfd_coff_swap_sym_in (output_bfd,
+ (PTR) oos,
+ (PTR) &iis);
+ iis.n_value =
+ (iisp->n_value
+ - enclosing->line_filepos
+ - linoff
+ + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr);
+ bfd_coff_swap_sym_out (output_bfd,
+ (PTR) &iis,
+ (PTR) oos);
+ --incls;
+ }
+
+ iiadd = 1 + iisp->n_numaux;
+ if (*iindp >= 0)
+ oos += iiadd * osymesz;
+ iisp += iiadd;
+ iindp += iiadd;
+ }
+ }
}
}
}
/* Write the modified symbols to the output file. */
if (outsym > finfo->outsyms)
{
- if (bfd_seek (output_bfd,
- obj_sym_filepos (output_bfd) + syment_base * osymesz,
- SEEK_SET) != 0
- || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1,
- output_bfd)
- != (bfd_size_type) (outsym - finfo->outsyms)))
- return false;
+ file_ptr pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
+ bfd_size_type amt = outsym - finfo->outsyms;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
+ return FALSE;
BFD_ASSERT ((obj_raw_syment_count (output_bfd)
+ (outsym - finfo->outsyms) / osymesz)
/* Don't let the linker relocation routines discard the symbols. */
keep_syms = obj_coff_keep_syms (input_bfd);
- obj_coff_keep_syms (input_bfd) = true;
+ obj_coff_keep_syms (input_bfd) = TRUE;
/* Relocate the contents of each section. */
for (o = input_bfd->sections; o != NULL; o = o->next)
{
+
bfd_byte *contents;
+ if (! o->linker_mark)
+ {
+ /* This section was omitted from the link. */
+ continue;
+ }
+
if ((o->flags & SEC_HAS_CONTENTS) == 0
|| o->_raw_size == 0
|| (o->flags & SEC_IN_MEMORY) != 0)
continue;
/* We have set filepos correctly for the sections we created to
- represent csects, so bfd_get_section_contents should work. */
+ represent csects, so bfd_get_section_contents should work. */
if (coff_section_data (input_bfd, o) != NULL
&& coff_section_data (input_bfd, o)->contents != NULL)
contents = coff_section_data (input_bfd, o)->contents;
- else
- {
- if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
- (file_ptr) 0, o->_raw_size))
- return false;
- contents = finfo->contents;
- }
+ else {
+ if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
+ (file_ptr) 0, o->_raw_size))
+ return FALSE;
+ contents = finfo->contents;
+ }
if ((o->flags & SEC_RELOC) != 0)
{
/* Read in the relocs. */
target_index = o->output_section->target_index;
internal_relocs = (xcoff_read_internal_relocs
- (input_bfd, o, false, finfo->external_relocs,
- true,
+ (input_bfd, o, FALSE, finfo->external_relocs,
+ TRUE,
(finfo->section_info[target_index].relocs
+ o->output_section->reloc_count)));
if (internal_relocs == NULL)
- return false;
+ return FALSE;
/* Call processor specific code to relocate the section
- contents. */
+ contents. */
if (! bfd_coff_relocate_section (output_bfd, finfo->info,
input_bfd, o,
contents,
internal_relocs,
finfo->internal_syms,
xcoff_data (input_bfd)->csects))
- return false;
+ return FALSE;
offset = o->output_section->vma + o->output_offset - o->vma;
irel = internal_relocs;
{
struct xcoff_link_hash_entry *h = NULL;
struct internal_ldrel ldrel;
+ bfd_boolean quiet;
*rel_hash = NULL;
r_symndx = irel->r_symndx;
- if (r_symndx != -1)
+ if (r_symndx == -1)
+ h = NULL;
+ else
+ h = obj_xcoff_sym_hashes (input_bfd)[r_symndx];
+
+ if (r_symndx != -1 && finfo->info->strip != strip_all)
{
- h = obj_xcoff_sym_hashes (input_bfd)[r_symndx];
- if (h != NULL)
+ if (h != NULL
+ && h->smclas != XMC_TD
+ && (irel->r_type == R_TOC
+ || irel->r_type == R_GL
+ || irel->r_type == R_TCL
+ || irel->r_type == R_TRL
+ || irel->r_type == R_TRLA))
+ {
+ /* This is a TOC relative reloc with a symbol
+ attached. The symbol should be the one which
+ this reloc is for. We want to make this
+ reloc against the TOC address of the symbol,
+ not the symbol itself. */
+ BFD_ASSERT (h->toc_section != NULL);
+ BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0);
+ if (h->u.toc_indx != -1)
+ irel->r_symndx = h->u.toc_indx;
+ else
+ {
+ struct xcoff_toc_rel_hash *n;
+ struct xcoff_link_section_info *si;
+ bfd_size_type amt;
+
+ amt = sizeof (struct xcoff_toc_rel_hash);
+ n = ((struct xcoff_toc_rel_hash *)
+ bfd_alloc (finfo->output_bfd, amt));
+ if (n == NULL)
+ return FALSE;
+ si = finfo->section_info + target_index;
+ n->next = si->toc_rel_hashes;
+ n->h = h;
+ n->rel = irel;
+ si->toc_rel_hashes = n;
+ }
+ }
+ else if (h != NULL)
{
/* This is a global symbol. */
if (h->indx >= 0)
irel->r_symndx = indx;
else
{
+
struct internal_syment *is;
+
const char *name;
char buf[SYMNMLEN + 1];
name = (_bfd_coff_internal_syment_name
(input_bfd, is, buf));
+
if (name == NULL)
- return false;
+ return FALSE;
if (! ((*finfo->info->callbacks->unattached_reloc)
(finfo->info, name, input_bfd, o,
irel->r_vaddr)))
- return false;
+ return FALSE;
}
}
}
+ quiet = FALSE;
switch (irel->r_type)
{
default:
- break;
+ if (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak
+ || h->root.type == bfd_link_hash_common)
+ break;
+ /* Fall through. */
case R_POS:
case R_NEG:
case R_RL:
section. */
ldrel.l_vaddr = irel->r_vaddr;
if (r_symndx == -1)
- ldrel.l_symndx = -1;
- else if (h == NULL)
+ ldrel.l_symndx = -(bfd_size_type ) 1;
+ else if (h == NULL
+ || (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak
+ || h->root.type == bfd_link_hash_common))
{
asection *sec;
- sec = xcoff_data (input_bfd)->csects[r_symndx];
- if ((sec->flags & SEC_CODE) != 0)
- ldrel.l_symndx = 0;
- else if ((sec->flags & SEC_HAS_CONTENTS) != 0)
- ldrel.l_symndx = 1;
+ if (h == NULL)
+ sec = xcoff_data (input_bfd)->csects[r_symndx];
+ else if (h->root.type == bfd_link_hash_common)
+ sec = h->root.u.c.p->section;
else
- ldrel.l_symndx = 2;
- }
- else if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *sec;
+ sec = h->root.u.def.section;
+ sec = sec->output_section;
- sec = h->root.u.def.section->output_section;
- if ((sec->flags & SEC_CODE) != 0)
+ if (strcmp (sec->name, ".text") == 0)
ldrel.l_symndx = 0;
- else if ((sec->flags & SEC_HAS_CONTENTS) != 0)
+ else if (strcmp (sec->name, ".data") == 0)
ldrel.l_symndx = 1;
- else
+ else if (strcmp (sec->name, ".bss") == 0)
ldrel.l_symndx = 2;
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%s: loader reloc in unrecognized section `%s'"),
+ bfd_archive_filename (input_bfd),
+ sec->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
+ }
}
else
{
- if (h->ldindx < 0)
+ if (! finfo->info->relocatable
+ && (h->flags & XCOFF_DEF_DYNAMIC) == 0
+ && (h->flags & XCOFF_IMPORT) == 0)
+ {
+ /* We already called the undefined_symbol
+ callback for this relocation, in
+ _bfd_ppc_xcoff_relocate_section. Don't
+ issue any more warnings. */
+ quiet = TRUE;
+ }
+ if (h->ldindx < 0 && ! quiet)
{
(*_bfd_error_handler)
- ("%s: `%s' in loader reloc but not loader sym",
- bfd_get_filename (input_bfd),
+ (_("%s: `%s' in loader reloc but not loader sym"),
+ bfd_archive_filename (input_bfd),
h->root.root.string);
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
ldrel.l_symndx = h->ldindx;
}
ldrel.l_rtype = (irel->r_size << 8) | irel->r_type;
ldrel.l_rsecnm = o->output_section->target_index;
if (xcoff_hash_table (finfo->info)->textro
- && (o->output_section->flags & SEC_CODE) != 0)
+ && strcmp (o->output_section->name, ".text") == 0
+ && ! quiet)
{
(*_bfd_error_handler)
- ("%s: loader reloc in read-only section %s",
- bfd_get_filename (input_bfd),
+ (_("%s: loader reloc in read-only section %s"),
+ bfd_archive_filename (input_bfd),
bfd_get_section_name (finfo->output_bfd,
o->output_section));
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ return FALSE;
}
- xcoff_swap_ldrel_out (output_bfd, &ldrel,
- finfo->ldrel);
- BFD_ASSERT (sizeof (struct external_ldrel) == LDRELSZ);
- ++finfo->ldrel;
+ bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel,
+ finfo->ldrel);
+
+ finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
+ break;
+
+ case R_TOC:
+ case R_GL:
+ case R_TCL:
+ case R_TRL:
+ case R_TRLA:
+ /* We should never need a .loader reloc for a TOC
+ relative reloc. */
+ break;
}
}
/* Write out the modified section contents. */
if (! bfd_set_section_contents (output_bfd, o->output_section,
- contents, o->output_offset,
+ contents, (file_ptr) o->output_offset,
(o->_cooked_size != 0
? o->_cooked_size
: o->_raw_size)))
- return false;
+ return FALSE;
}
obj_coff_keep_syms (input_bfd) = keep_syms;
if (! finfo->info->keep_memory)
{
if (! _bfd_coff_free_symbols (input_bfd))
- return false;
+ return FALSE;
}
- return true;
+ return TRUE;
}
#undef N_TMASK
/* Write out a non-XCOFF global symbol. */
-static boolean
-xcoff_write_global_symbol (h, p)
+
+static bfd_boolean
+xcoff_write_global_symbol (h, inf)
struct xcoff_link_hash_entry *h;
- PTR p;
+ PTR inf;
{
- struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) p;
+ struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) inf;
bfd *output_bfd;
bfd_byte *outsym;
struct internal_syment isym;
union internal_auxent aux;
+ bfd_boolean result;
+ file_ptr pos;
+ bfd_size_type amt;
output_bfd = finfo->output_bfd;
+ outsym = finfo->outsyms;
+
+ if (h->root.type == bfd_link_hash_warning)
+ {
+ h = (struct xcoff_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_new)
+ return TRUE;
+ }
/* If this symbol was garbage collected, just skip it. */
if (xcoff_hash_table (finfo->info)->gc
&& (h->flags & XCOFF_MARK) == 0)
- return true;
+ return TRUE;
/* If we need a .loader section entry, write it out. */
if (h->ldsym != NULL)
if (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak)
{
+
ldsym->l_value = 0;
ldsym->l_scnum = N_UNDEF;
ldsym->l_smtype = XTY_ER;
impbfd = h->root.u.undef.abfd;
+
}
else if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
+
asection *sec;
sec = h->root.u.def.section;
ldsym->l_scnum = sec->output_section->target_index;
ldsym->l_smtype = XTY_SD;
impbfd = sec->owner;
+
}
else
abort ();
if (((h->flags & XCOFF_DEF_REGULAR) == 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_IMPORT) != 0)
- ldsym->l_smtype |= L_IMPORT;
+ {
+ /* Clear l_smtype
+ Import symbols are defined so the check above will make
+ the l_smtype XTY_SD. But this is not correct, it should
+ be cleared. */
+ ldsym->l_smtype |= L_IMPORT;
+ }
+
if (((h->flags & XCOFF_DEF_REGULAR) != 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_EXPORT) != 0)
- ldsym->l_smtype |= L_EXPORT;
+ {
+ ldsym->l_smtype |= L_EXPORT;
+ }
+
if ((h->flags & XCOFF_ENTRY) != 0)
- ldsym->l_smtype |= L_ENTRY;
+ {
+ ldsym->l_smtype |= L_ENTRY;
+ }
+
+ if ((h->flags & XCOFF_RTINIT) != 0)
+ {
+ ldsym->l_smtype = XTY_SD;
+ }
ldsym->l_smclas = h->smclas;
- if (ldsym->l_ifile == (bfd_size_type) -1)
- ldsym->l_ifile = 0;
+ if (ldsym->l_smtype & L_IMPORT)
+ {
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.value != 0))
+ {
+ ldsym->l_smclas = XMC_XO;
+ }
+ else if ((h->flags & (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) ==
+ (XCOFF_SYSCALL32 | XCOFF_SYSCALL64))
+ {
+ ldsym->l_smclas = XMC_SV3264;
+ }
+ else if (h->flags & XCOFF_SYSCALL32)
+ {
+ ldsym->l_smclas = XMC_SV;
+ }
+ else if (h->flags & XCOFF_SYSCALL64)
+ {
+ ldsym->l_smclas = XMC_SV64;
+ }
+ }
+
+ if (ldsym->l_ifile == -(bfd_size_type) 1)
+ {
+ ldsym->l_ifile = 0;
+ }
else if (ldsym->l_ifile == 0)
{
if ((ldsym->l_smtype & L_IMPORT) == 0)
- ldsym->l_ifile = 0;
+ {
+ ldsym->l_ifile = 0;
+ }
else if (impbfd == NULL)
- ldsym->l_ifile = 0;
+ {
+ ldsym->l_ifile = 0;
+ }
else
{
BFD_ASSERT (impbfd->xvec == output_bfd->xvec);
ldsym->l_parm = 0;
BFD_ASSERT (h->ldindx >= 0);
- BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym));
- xcoff_swap_ldsym_out (output_bfd, ldsym, finfo->ldsym + h->ldindx - 3);
+
+ bfd_xcoff_swap_ldsym_out (output_bfd, ldsym,
+ (finfo->ldsym +
+ (h->ldindx - 3)
+ * bfd_xcoff_ldsymsz(finfo->output_bfd)));
h->ldsym = NULL;
}
p = h->root.u.def.section->contents + h->root.u.def.value;
/* The first instruction in the global linkage code loads a
- specific TOC element. */
+ specific TOC element. */
tocoff = (h->descriptor->toc_section->output_section->vma
+ h->descriptor->toc_section->output_offset
- + h->descriptor->toc_offset
- xcoff_data (output_bfd)->toc);
- bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | tocoff, p);
- for (i = 0, p += 4;
- i < sizeof xcoff_glink_code / sizeof xcoff_glink_code[0];
- i++, p += 4)
- bfd_put_32 (output_bfd, xcoff_glink_code[i], p);
+
+ if ((h->descriptor->flags & XCOFF_SET_TOC) != 0)
+ {
+ tocoff += h->descriptor->u.toc_offset;
+ }
+
+
+ /* The first instruction in the glink code needs to be
+ cooked to to hold the correct offset in the toc. The
+ rest are just output raw. */
+ bfd_put_32 (output_bfd,
+ bfd_xcoff_glink_code(output_bfd, 0) | (tocoff & 0xffff), p);
+
+ /* Start with i == 1 to get past the first instruction done above
+ The /4 is because the glink code is in bytes and we are going
+ 4 at a pop. */
+ for (i = 1; i < bfd_xcoff_glink_code_size(output_bfd) / 4; i++)
+ {
+ bfd_put_32 (output_bfd,
+ (bfd_vma) bfd_xcoff_glink_code(output_bfd, i),
+ &p[4 * i]);
+ }
}
/* If we created a TOC entry for this symbol, write out the required
int oindx;
struct internal_reloc *irel;
struct internal_ldrel ldrel;
+ struct internal_syment irsym;
+ union internal_auxent iraux;
tocsec = h->toc_section;
osec = tocsec->output_section;
irel = finfo->section_info[oindx].relocs + osec->reloc_count;
irel->r_vaddr = (osec->vma
+ tocsec->output_offset
- + h->toc_offset);
+ + h->u.toc_offset);
+
+
if (h->indx >= 0)
- irel->r_symndx = h->indx;
+ {
+ irel->r_symndx = h->indx;
+ }
else
{
h->indx = -2;
irel->r_symndx = obj_raw_syment_count (output_bfd);
}
+
+ BFD_ASSERT (h->ldindx >= 0);
+
+ /* Initialize the aux union here instead of closer to when it is
+ written out below because the length of the csect depends on
+ whether the output is 32 or 64 bit. */
+ memset (&iraux, 0, sizeof iraux);
+ iraux.x_csect.x_smtyp = XTY_SD;
+ /* iraux.x_csect.x_scnlen.l = 4 or 8, see below */
+ iraux.x_csect.x_smclas = XMC_TC;
+
+ /* 32 bit uses a 32 bit R_POS to do the relocations
+ 64 bit uses a 64 bit R_POS to do the relocations
+
+ Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
+
+ Which one is determined by the backend. */
+ if (bfd_xcoff_is_xcoff64 (output_bfd))
+ {
+ irel->r_size = 63;
+ iraux.x_csect.x_scnlen.l = 8;
+ }
+ else if (bfd_xcoff_is_xcoff32 (output_bfd))
+ {
+ irel->r_size = 31;
+ iraux.x_csect.x_scnlen.l = 4;
+ }
+ else
+ {
+ return FALSE;
+ }
irel->r_type = R_POS;
- irel->r_size = 31;
finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
++osec->reloc_count;
- BFD_ASSERT (h->ldindx >= 0);
ldrel.l_vaddr = irel->r_vaddr;
ldrel.l_symndx = h->ldindx;
- ldrel.l_rtype = (31 << 8) | R_POS;
+ ldrel.l_rtype = (irel->r_size << 8) | R_POS;
ldrel.l_rsecnm = oindx;
- xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
- ++finfo->ldrel;
+ bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
+
+ /* We need to emit a symbol to define a csect which holds
+ the reloc. */
+ if (finfo->info->strip != strip_all)
+ {
+
+ result = bfd_xcoff_put_symbol_name (output_bfd, finfo->strtab,
+ &irsym, h->root.root.string);
+ if (!result)
+ return FALSE;
+
+ irsym.n_value = irel->r_vaddr;
+ irsym.n_scnum = osec->target_index;
+ irsym.n_sclass = C_HIDEXT;
+ irsym.n_type = T_NULL;
+ irsym.n_numaux = 1;
+
+ bfd_coff_swap_sym_out (output_bfd, (PTR) &irsym, (PTR) outsym);
+ outsym += bfd_coff_symesz (output_bfd);
+
+ /* note : iraux is initialized above */
+ bfd_coff_swap_aux_out (output_bfd, (PTR) &iraux, T_NULL, C_HIDEXT,
+ 0, 1, (PTR) outsym);
+ outsym += bfd_coff_auxesz (output_bfd);
+
+ if (h->indx >= 0)
+ {
+ /* We aren't going to write out the symbols below, so we
+ need to write them out now. */
+ pos = obj_sym_filepos (output_bfd);
+ pos += (obj_raw_syment_count (output_bfd)
+ * bfd_coff_symesz (output_bfd));
+ amt = outsym - finfo->outsyms;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
+ return FALSE;
+ obj_raw_syment_count (output_bfd) +=
+ (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd);
+
+ outsym = finfo->outsyms;
+ }
+ }
}
- if (h->indx >= 0)
- return true;
+ /* If this symbol is a specially defined function descriptor, write
+ it out. The first word is the address of the function code
+ itself, the second word is the address of the TOC, and the third
+ word is zero.
+
+ 32 bit vs 64 bit
+ The addresses for the 32 bit will take 4 bytes and the addresses
+ for 64 bit will take 8 bytes. Similar for the relocs. This type
+ of logic was also done above to create a TOC entry in
+ xcoff_write_global_symbol. */
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0
+ && h->root.type == bfd_link_hash_defined
+ && (h->root.u.def.section
+ == xcoff_hash_table (finfo->info)->descriptor_section))
+ {
+ asection *sec;
+ asection *osec;
+ int oindx;
+ bfd_byte *p;
+ struct xcoff_link_hash_entry *hentry;
+ asection *esec;
+ struct internal_reloc *irel;
+ struct internal_ldrel ldrel;
+ asection *tsec;
+ unsigned int reloc_size, byte_size;
+
+ if (bfd_xcoff_is_xcoff64 (output_bfd))
+ {
+ reloc_size = 63;
+ byte_size = 8;
+ }
+ else if (bfd_xcoff_is_xcoff32 (output_bfd))
+ {
+ reloc_size = 31;
+ byte_size = 4;
+ }
+ else
+ {
+ return FALSE;
+ }
+
+ sec = h->root.u.def.section;
+ osec = sec->output_section;
+ oindx = osec->target_index;
+ p = sec->contents + h->root.u.def.value;
+
+ hentry = h->descriptor;
+ BFD_ASSERT (hentry != NULL
+ && (hentry->root.type == bfd_link_hash_defined
+ || hentry->root.type == bfd_link_hash_defweak));
+ esec = hentry->root.u.def.section;
+
+ irel = finfo->section_info[oindx].relocs + osec->reloc_count;
+ irel->r_vaddr = (osec->vma
+ + sec->output_offset
+ + h->root.u.def.value);
+ irel->r_symndx = esec->output_section->target_index;
+ irel->r_type = R_POS;
+ irel->r_size = reloc_size;
+ finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
+ ++osec->reloc_count;
+
+ ldrel.l_vaddr = irel->r_vaddr;
+ if (strcmp (esec->output_section->name, ".text") == 0)
+ ldrel.l_symndx = 0;
+ else if (strcmp (esec->output_section->name, ".data") == 0)
+ ldrel.l_symndx = 1;
+ else if (strcmp (esec->output_section->name, ".bss") == 0)
+ ldrel.l_symndx = 2;
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%s: loader reloc in unrecognized section `%s'"),
+ bfd_get_filename (output_bfd),
+ esec->output_section->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
+ }
+ ldrel.l_rtype = (reloc_size << 8) | R_POS;
+ ldrel.l_rsecnm = oindx;
+ bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
+
+ /* There are three items to write out,
+ the address of the code
+ the address of the toc anchor
+ the environment pointer.
+ We are ignoring the environment pointer. So set it to zero. */
+ if (bfd_xcoff_is_xcoff64 (output_bfd))
+ {
+ bfd_put_64 (output_bfd,
+ (esec->output_section->vma + esec->output_offset
+ + hentry->root.u.def.value),
+ p);
+ bfd_put_64 (output_bfd, xcoff_data (output_bfd)->toc, p + 8);
+ bfd_put_64 (output_bfd, (bfd_vma) 0, p + 16);
+ }
+ else
+ {
+ /* 32 bit backend
+ This logic was already called above so the error case where
+ the backend is neither has already been checked. */
+ bfd_put_32 (output_bfd,
+ (esec->output_section->vma + esec->output_offset
+ + hentry->root.u.def.value),
+ p);
+ bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, p + 8);
+ }
+
+ tsec = coff_section_from_bfd_index (output_bfd,
+ xcoff_data (output_bfd)->sntoc);
+
+ ++irel;
+ irel->r_vaddr = (osec->vma
+ + sec->output_offset
+ + h->root.u.def.value
+ + byte_size);
+ irel->r_symndx = tsec->output_section->target_index;
+ irel->r_type = R_POS;
+ irel->r_size = reloc_size;
+ finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
+ ++osec->reloc_count;
+
+ ldrel.l_vaddr = irel->r_vaddr;
+ if (strcmp (tsec->output_section->name, ".text") == 0)
+ ldrel.l_symndx = 0;
+ else if (strcmp (tsec->output_section->name, ".data") == 0)
+ ldrel.l_symndx = 1;
+ else if (strcmp (tsec->output_section->name, ".bss") == 0)
+ ldrel.l_symndx = 2;
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%s: loader reloc in unrecognized section `%s'"),
+ bfd_get_filename (output_bfd),
+ tsec->output_section->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
+ }
+ ldrel.l_rtype = (reloc_size << 8) | R_POS;
+ ldrel.l_rsecnm = oindx;
+ bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
+ }
+
+ if (h->indx >= 0 || finfo->info->strip == strip_all)
+ {
+ BFD_ASSERT (outsym == finfo->outsyms);
+ return TRUE;
+ }
if (h->indx != -2
&& (finfo->info->strip == strip_all
|| (finfo->info->strip == strip_some
- && (bfd_hash_lookup (finfo->info->keep_hash,
- h->root.root.string, false, false)
- == NULL))))
- return true;
+ && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
+ FALSE, FALSE) == NULL)))
+ {
+ BFD_ASSERT (outsym == finfo->outsyms);
+ return TRUE;
+ }
if (h->indx != -2
&& (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0)
- return true;
-
- outsym = finfo->outsyms;
+ {
+ BFD_ASSERT (outsym == finfo->outsyms);
+ return TRUE;
+ }
memset (&aux, 0, sizeof aux);
h->indx = obj_raw_syment_count (output_bfd);
- if (strlen (h->root.root.string) <= SYMNMLEN)
- strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN);
- else
- {
- boolean hash;
- bfd_size_type indx;
-
- hash = true;
- if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
- hash = false;
- indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash,
- false);
- if (indx == (bfd_size_type) -1)
- return false;
- isym._n._n_n._n_zeroes = 0;
- isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
- }
+ result = bfd_xcoff_put_symbol_name (output_bfd, finfo->strtab, &isym,
+ h->root.root.string);
+ if (!result)
+ return FALSE;
if (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak)
isym.n_sclass = C_EXT;
aux.x_csect.x_smtyp = XTY_ER;
}
+ else if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && h->smclas == XMC_XO)
+ {
+ BFD_ASSERT (bfd_is_abs_section (h->root.u.def.section));
+ isym.n_value = h->root.u.def.value;
+ isym.n_scnum = N_UNDEF;
+ isym.n_sclass = C_EXT;
+ aux.x_csect.x_smtyp = XTY_ER;
+ }
else if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
+ struct xcoff_link_size_list *l;
+
isym.n_value = (h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset
+ h->root.u.def.value);
- isym.n_scnum = h->root.u.def.section->output_section->target_index;
+ if (bfd_is_abs_section (h->root.u.def.section->output_section))
+ isym.n_scnum = N_ABS;
+ else
+ isym.n_scnum = h->root.u.def.section->output_section->target_index;
isym.n_sclass = C_HIDEXT;
aux.x_csect.x_smtyp = XTY_SD;
- /* I don't know what the csect length should be in this case. */
+
+ if ((h->flags & XCOFF_HAS_SIZE) != 0)
+ {
+ for (l = xcoff_hash_table (finfo->info)->size_list;
+ l != NULL;
+ l = l->next)
+ {
+ if (l->h == h)
+ {
+ aux.x_csect.x_scnlen.l = l->size;
+ break;
+ }
+ }
+ }
+ }
+ else if (h->root.type == bfd_link_hash_common)
+ {
+ isym.n_value = (h->root.u.c.p->section->output_section->vma
+ + h->root.u.c.p->section->output_offset);
+ isym.n_scnum = h->root.u.c.p->section->output_section->target_index;
+ isym.n_sclass = C_EXT;
+ aux.x_csect.x_smtyp = XTY_CM;
+ aux.x_csect.x_scnlen.l = h->root.u.c.size;
}
else
abort ();
outsym += bfd_coff_symesz (output_bfd);
aux.x_csect.x_smclas = h->smclas;
-
bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, isym.n_sclass, 0, 1,
(PTR) outsym);
outsym += bfd_coff_auxesz (output_bfd);
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && h->smclas != XMC_XO)
{
/* We just output an SD symbol. Now output an LD symbol. */
aux.x_csect.x_smtyp = XTY_LD;
aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd);
-
bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, C_EXT, 0, 1,
(PTR) outsym);
outsym += bfd_coff_auxesz (output_bfd);
}
- if (bfd_seek (output_bfd,
- (obj_sym_filepos (output_bfd)
- + (obj_raw_syment_count (output_bfd)
- * bfd_coff_symesz (output_bfd))),
- SEEK_SET) != 0
- || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, output_bfd)
- != (bfd_size_type) (outsym - finfo->outsyms)))
- return false;
+ pos = obj_sym_filepos (output_bfd);
+ pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd);
+ amt = outsym - finfo->outsyms;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
+ return FALSE;
obj_raw_syment_count (output_bfd) +=
(outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd);
- return true;
+ return TRUE;
}
/* Handle a link order which is supposed to generate a reloc. */
-static boolean
+static bfd_boolean
xcoff_reloc_link_order (output_bfd, finfo, output_section, link_order)
bfd *output_bfd;
struct xcoff_final_link_info *finfo;
struct bfd_link_order *link_order;
{
reloc_howto_type *howto;
+ struct xcoff_link_hash_entry *h;
+ asection *hsec;
+ bfd_vma hval;
+ bfd_vma addend;
struct internal_reloc *irel;
struct xcoff_link_hash_entry **rel_hash_ptr;
+ struct internal_ldrel ldrel;
+
+ if (link_order->type == bfd_section_reloc_link_order)
+ {
+ /* We need to somehow locate a symbol in the right section. The
+ symbol must either have a value of zero, or we must adjust
+ the addend by the value of the symbol. FIXME: Write this
+ when we need it. The old linker couldn't handle this anyhow. */
+ abort ();
+ }
howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
if (howto == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
- if (link_order->u.reloc.p->addend != 0)
+ h = ((struct xcoff_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
+ link_order->u.reloc.p->u.name,
+ FALSE, FALSE, TRUE));
+ if (h == NULL)
+ {
+ if (! ((*finfo->info->callbacks->unattached_reloc)
+ (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
+ (asection *) NULL, (bfd_vma) 0)))
+ return FALSE;
+ return TRUE;
+ }
+
+ if (h->root.type == bfd_link_hash_common)
+ {
+ hsec = h->root.u.c.p->section;
+ hval = 0;
+ }
+ else if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ hsec = h->root.u.def.section;
+ hval = h->root.u.def.value;
+ }
+ else
+ {
+ hsec = NULL;
+ hval = 0;
+ }
+
+ addend = link_order->u.reloc.p->addend;
+ if (hsec != NULL)
+ addend += (hsec->output_section->vma
+ + hsec->output_offset
+ + hval);
+
+ if (addend != 0)
{
bfd_size_type size;
bfd_byte *buf;
bfd_reloc_status_type rstat;
- boolean ok;
+ bfd_boolean ok;
size = bfd_get_reloc_size (howto);
buf = (bfd_byte *) bfd_zmalloc (size);
if (buf == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return FALSE;
- rstat = _bfd_relocate_contents (howto, output_bfd,
- link_order->u.reloc.p->addend, buf);
+ rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
switch (rstat)
{
case bfd_reloc_ok:
abort ();
case bfd_reloc_overflow:
if (! ((*finfo->info->callbacks->reloc_overflow)
- (finfo->info,
- (link_order->type == bfd_section_reloc_link_order
- ? bfd_section_name (output_bfd,
- link_order->u.reloc.p->u.section)
- : link_order->u.reloc.p->u.name),
- howto->name, link_order->u.reloc.p->addend,
- (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
+ (finfo->info, link_order->u.reloc.p->u.name,
+ howto->name, addend, (bfd *) NULL, (asection *) NULL,
+ (bfd_vma) 0)))
{
free (buf);
- return false;
+ return FALSE;
}
break;
}
(file_ptr) link_order->offset, size);
free (buf);
if (! ok)
- return false;
+ return FALSE;
}
/* Store the reloc information in the right place. It will get
irel->r_vaddr = output_section->vma + link_order->offset;
- if (link_order->type == bfd_section_reloc_link_order)
+ if (h->indx >= 0)
+ irel->r_symndx = h->indx;
+ else
{
- /* We need to somehow locate a symbol in the right section. The
- symbol must either have a value of zero, or we must adjust
- the addend by the value of the symbol. FIXME: Write this
- when we need it. The old linker couldn't handle this anyhow. */
- abort ();
- *rel_hash_ptr = NULL;
+ /* Set the index to -2 to force this symbol to get written out. */
+ h->indx = -2;
+ *rel_hash_ptr = h;
irel->r_symndx = 0;
}
- else
+
+ irel->r_type = howto->type;
+ irel->r_size = howto->bitsize - 1;
+ if (howto->complain_on_overflow == complain_overflow_signed)
+ irel->r_size |= 0x80;
+
+ ++output_section->reloc_count;
+
+ /* Now output the reloc to the .loader section. */
+
+ ldrel.l_vaddr = irel->r_vaddr;
+
+ if (hsec != NULL)
{
- struct xcoff_link_hash_entry *h;
+ const char *secname;
- h = xcoff_link_hash_lookup (xcoff_hash_table (finfo->info),
- link_order->u.reloc.p->u.name,
- false, false, true);
- if (h != NULL)
+ secname = hsec->output_section->name;
+
+ if (strcmp (secname, ".text") == 0)
+ ldrel.l_symndx = 0;
+ else if (strcmp (secname, ".data") == 0)
+ ldrel.l_symndx = 1;
+ else if (strcmp (secname, ".bss") == 0)
+ ldrel.l_symndx = 2;
+ else
{
- if (h->indx >= 0)
- irel->r_symndx = h->indx;
- else
- {
- /* Set the index to -2 to force this symbol to get
- written out. */
- h->indx = -2;
- *rel_hash_ptr = h;
- irel->r_symndx = 0;
- }
+ (*_bfd_error_handler)
+ (_("%s: loader reloc in unrecognized section `%s'"),
+ bfd_get_filename (output_bfd), secname);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
}
- else
+ }
+ else
+ {
+ if (h->ldindx < 0)
{
- if (! ((*finfo->info->callbacks->unattached_reloc)
- (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
- (asection *) NULL, (bfd_vma) 0)))
- return false;
- irel->r_symndx = 0;
+ (*_bfd_error_handler)
+ (_("%s: `%s' in loader reloc but not loader sym"),
+ bfd_get_filename (output_bfd),
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
+ ldrel.l_symndx = h->ldindx;
}
- irel->r_type = howto->type;
- irel->r_size = howto->bitsize - 1;
- if (howto->complain_on_overflow == complain_overflow_signed)
- irel->r_size |= 0x80;
+ ldrel.l_rtype = (irel->r_size << 8) | irel->r_type;
+ ldrel.l_rsecnm = output_section->target_index;
+ bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
- ++output_section->reloc_count;
-
- return true;
+ return TRUE;
}
/* Sort relocs by VMA. This is called via qsort. */
return 0;
}
-/* This is the relocation function for the RS/6000/POWER/PowerPC.
- This is currently the only processor which uses XCOFF; I hope that
- will never change. */
-
-boolean
-_bfd_ppc_xcoff_relocate_section (output_bfd, info, input_bfd,
- input_section, contents, relocs, syms,
- sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- struct internal_reloc *relocs;
- struct internal_syment *syms;
- asection **sections;
-{
- struct internal_reloc *rel;
- struct internal_reloc *relend;
-
- rel = relocs;
- relend = rel + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- long symndx;
- struct xcoff_link_hash_entry *h;
- struct internal_syment *sym;
- bfd_vma addend;
- bfd_vma val;
- struct reloc_howto_struct howto;
- bfd_reloc_status_type rstat;
- /* Relocation type R_REF is a special relocation type which is
- merely used to prevent garbage collection from occurring for
- the csect including the symbol which it references. */
- if (rel->r_type == R_REF)
- continue;
- symndx = rel->r_symndx;
- if (symndx == -1)
- {
- h = NULL;
- sym = NULL;
- addend = 0;
- }
- else
- {
- h = obj_xcoff_sym_hashes (input_bfd)[symndx];
- sym = syms + symndx;
- addend = - sym->n_value;
- }
-
- /* We build the howto information on the fly. */
-
- howto.type = rel->r_type;
- howto.rightshift = 0;
- howto.size = 2;
- howto.bitsize = (rel->r_size & 0x1f) + 1;
- howto.pc_relative = false;
- howto.bitpos = 0;
- if ((rel->r_size & 0x80) != 0)
- howto.complain_on_overflow = complain_overflow_signed;
- else
- howto.complain_on_overflow = complain_overflow_bitfield;
- howto.special_function = NULL;
- howto.name = "internal";
- howto.partial_inplace = true;
- if (howto.bitsize == 32)
- howto.src_mask = howto.dst_mask = 0xffffffff;
- else
- {
- howto.src_mask = howto.dst_mask = (1 << howto.bitsize) - 1;
- if (howto.bitsize == 16)
- howto.size = 1;
- }
- howto.pcrel_offset = false;
-
- val = 0;
-
- if (h == NULL)
- {
- asection *sec;
-
- if (symndx == -1)
- {
- sec = bfd_abs_section_ptr;
- val = 0;
- }
- else
- {
- sec = sections[symndx];
- val = (sec->output_section->vma
- + sec->output_offset
- + sym->n_value
- - sec->vma);
- }
- }
- else
- {
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *sec;
-
- sec = h->root.u.def.section;
- val = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if ((h->flags & XCOFF_REF_DYNAMIC) != 0
- || (h->flags & XCOFF_IMPORT) != 0)
- {
- /* Every symbol in a shared object is defined somewhere. */
- val = 0;
- }
- else if (! info->relocateable)
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_vaddr - input_section->vma)))
- return false;
- }
- }
-
- /* I took the relocation type definitions from two documents:
- the PowerPC AIX Version 4 Application Binary Interface, First
- Edition (April 1992), and the PowerOpen ABI, Big-Endian
- 32-Bit Hardware Implementation (June 30, 1994). Differences
- between the documents are noted below. */
-
- switch (rel->r_type)
- {
- case R_RTB:
- case R_RRTBI:
- case R_RRTBA:
- /* These relocs are defined by the PowerPC ABI to be
- relative branches which use half of the difference
- between the symbol and the program counter. I can't
- quite figure out when this is useful. These relocs are
- not defined by the PowerOpen ABI. */
- default:
- (*_bfd_error_handler)
- ("%s: unsupported relocation type 0x%02x",
- bfd_get_filename (input_bfd), (unsigned int) rel->r_type);
- bfd_set_error (bfd_error_bad_value);
- return false;
- case R_POS:
- /* Simple positive relocation. */
- break;
- case R_NEG:
- /* Simple negative relocation. */
- val = - val;
- break;
- case R_REL:
- /* Simple PC relative relocation. */
- howto.pc_relative = true;
- break;
- case R_TOC:
- /* TOC relative relocation. The value in the instruction in
- the input file is the offset from the input file TOC to
- the desired location. We want the offset from the final
- TOC to the desired location. We have:
- isym = iTOC + in
- iinsn = in + o
- osym = oTOC + on
- oinsn = on + o
- so we must change insn by on - in.
- */
- case R_GL:
- /* Global linkage relocation. The value of this relocation
- is the address of the entry in the TOC section. */
- case R_TCL:
- /* Local object TOC address. I can't figure out the
- difference between this and case R_GL. */
- case R_TRL:
- /* TOC relative relocation. A TOC relative load instruction
- which may be changed to a load address instruction.
- FIXME: We don't currently implement this optimization. */
- case R_TRLA:
- /* TOC relative relocation. This is a TOC relative load
- address instruction which may be changed to a load
- instruction. FIXME: I don't know if this is the correct
- implementation. */
- if (h != NULL && h->toc_section == NULL)
- {
- (*_bfd_error_handler)
- ("%s: TOC reloc at 0x%x to symbol `%s' with no TOC entry",
- bfd_get_filename (input_bfd), rel->r_vaddr,
- h->root.root.string);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- if (h != NULL)
- val = (h->toc_section->output_section->vma
- + h->toc_section->output_offset
- + h->toc_offset);
- val = ((val - xcoff_data (output_bfd)->toc)
- - (sym->n_value - xcoff_data (input_bfd)->toc));
- addend = 0;
- break;
- case R_BA:
- /* Absolute branch. We don't want to mess with the lower
- two bits of the instruction. */
- case R_CAI:
- /* The PowerPC ABI defines this as an absolute call which
- may be modified to become a relative call. The PowerOpen
- ABI does not define this relocation type. */
- case R_RBA:
- /* Absolute branch which may be modified to become a
- relative branch. */
- case R_RBAC:
- /* The PowerPC ABI defines this as an absolute branch to a
- fixed address which may be modified to an absolute branch
- to a symbol. The PowerOpen ABI does not define this
- relocation type. */
- case R_RBRC:
- /* The PowerPC ABI defines this as an absolute branch to a
- fixed address which may be modified to a relative branch.
- The PowerOpen ABI does not define this relocation type. */
- howto.src_mask &= ~3;
- howto.dst_mask = howto.src_mask;
- break;
- case R_BR:
- /* Relative branch. We don't want to mess with the lower
- two bits of the instruction. */
- case R_CREL:
- /* The PowerPC ABI defines this as a relative call which may
- be modified to become an absolute call. The PowerOpen
- ABI does not define this relocation type. */
- case R_RBR:
- /* A relative branch which may be modified to become an
- absolute branch. FIXME: We don't implement this,
- although we should for symbols of storage mapping class
- XMC_XO. */
- howto.pc_relative = true;
- howto.src_mask &= ~3;
- howto.dst_mask = howto.src_mask;
- break;
- case R_RL:
- /* The PowerPC AIX ABI describes this as a load which may be
- changed to a load address. The PowerOpen ABI says this
- is the same as case R_POS. */
- break;
- case R_RLA:
- /* The PowerPC AIX ABI describes this as a load address
- which may be changed to a load. The PowerOpen ABI says
- this is the same as R_POS. */
- break;
- }
-
- /* If we see an R_BR or R_RBR reloc which is jumping to global
- linkage code, and it is followed by an appropriate cror nop
- instruction, we replace the cror with lwz r2,20(r1). This
- restores the TOC after the glink code. Contrariwise, if the
- call is followed by a lwz r2,20(r1), but the call is not
- going to global linkage code, we can replace the load with a
- cror. */
- if ((rel->r_type == R_BR || rel->r_type == R_RBR)
- && h != NULL
- && h->root.type == bfd_link_hash_defined
- && (rel->r_vaddr - input_section->vma + 8
- <= input_section->_cooked_size))
- {
- bfd_byte *pnext;
- unsigned long next;
-
- pnext = contents + (rel->r_vaddr - input_section->vma) + 4;
- next = bfd_get_32 (input_bfd, pnext);
- if (h->smclas == XMC_GL)
- {
- if (next == 0x4def7b82 /* cror 15,15,15 */
- || next == 0x4ffffb82) /* cror 31,31,31 */
- bfd_put_32 (input_bfd, 0x80410014, pnext); /* lwz r1,20(r1) */
- }
- else
- {
- if (next == 0x80410014) /* lwz r1,20(r1) */
- bfd_put_32 (input_bfd, 0x4ffffb82, pnext); /* cror 31,31,31 */
- }
- }
-
- /* A PC relative reloc includes the section address. */
- if (howto.pc_relative)
- addend += input_section->vma;
-
- rstat = _bfd_final_link_relocate (&howto, input_bfd, input_section,
- contents,
- rel->r_vaddr - input_section->vma,
- val, addend);
-
- switch (rstat)
- {
- default:
- abort ();
- case bfd_reloc_ok:
- break;
- case bfd_reloc_overflow:
- {
- const char *name;
- char buf[SYMNMLEN + 1];
- char howto_name[10];
-
- if (symndx == -1)
- name = "*ABS*";
- else if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
- if (name == NULL)
- return false;
- }
- sprintf (howto_name, "0x%02x", rel->r_type);
-
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto_name, (bfd_vma) 0, input_bfd,
- input_section, rel->r_vaddr - input_section->vma)))
- return false;
- }
- }
- }
-
- return true;
-}