X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Fxcofflink.c;h=f14c62b2846deaa834e90af733834858b9c81c39;hb=ca61edf2ffd9bb92243a2c8d8ad89044a93e5727;hp=9a52a9c045746025712e9756171b48a0d73d2a6a;hpb=b223f95038337da6cc784c73fbd2bf06fd8e5f11;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/xcofflink.c b/bfd/xcofflink.c index 9a52a9c045..f14c62b284 100644 --- a/bfd/xcofflink.c +++ b/bfd/xcofflink.c @@ -1,227 +1,44 @@ /* POWER/PowerPC XCOFF linker support. - Copyright 1995, 1996 Free Software Foundation, Inc. + Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007 Free Software Foundation, Inc. Written by Ian Lance Taylor , 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 3 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + 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., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.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. */ -#define STRING_SIZE_SIZE (4) - -/* In order to support linking different object file formats into an - XCOFF format, we need to be able to determine whether a particular - bfd_target is an XCOFF vector. FIXME: We need to rethink this - whole approach. */ -#define XCOFF_XVECP(xv) \ - (strcmp ((xv)->name, "aixcoff-rs6000") == 0 \ - || strcmp ((xv)->name, "xcoff-powermac") == 0) - -/* 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) +#undef STRING_SIZE_SIZE +#define STRING_SIZE_SIZE 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 @@ -236,134 +53,6 @@ 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; - - union - { - /* If we have created a TOC entry (the XCOFF_SET_TOC flag is - set), this is the offset in toc_section. */ - bfd_vma toc_offset; - /* If the TOC entry comes from an input file, this is set to the - symbol index of the C_HIDEXT XMC_TC or XMC_TD symbol. */ - long toc_indx; - } u; - - /* If this symbol is a function entry point which is called, this - field holds a pointer to the function descriptor. If this symbol - is a function descriptor, this field holds a pointer to the - function entry point. */ - 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 defined by a dynamic object. */ -#define XCOFF_DEF_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) - /* Symbol size is recorded in size_list list from hash table. */ -#define XCOFF_HAS_SIZE (04000) - /* Symbol is a function descriptor. */ -#define XCOFF_DESCRIPTOR (010000) - - /* 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 .ds section we use to hold function descriptors which we - create for exported symbols. */ - asection *descriptor_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; - - /* A linked list of symbols for which we have size information. */ - struct xcoff_link_size_list - { - struct xcoff_link_size_list *next; - struct xcoff_link_hash_entry *h; - bfd_size_type size; - } *size_list; - - /* Magic sections: _text, _etext, _data, _edata, _end, end. */ - asection *special_sections[6]; -}; - /* Information we keep for each section in the output file during the final link phase. */ @@ -379,11 +68,11 @@ struct xcoff_link_section_info 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; + { + 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. */ @@ -406,9 +95,9 @@ struct xcoff_final_link_info /* 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. */ @@ -427,203 +116,48 @@ struct xcoff_final_link_info bfd_byte *external_relocs; }; -static void xcoff_swap_ldhdr_in - PARAMS ((bfd *, const struct external_ldhdr *, struct internal_ldhdr *)); -static void xcoff_swap_ldhdr_out - PARAMS ((bfd *, const struct internal_ldhdr *, struct external_ldhdr *)); -static void xcoff_swap_ldsym_in - PARAMS ((bfd *, const struct external_ldsym *, struct internal_ldsym *)); -static void xcoff_swap_ldsym_out - PARAMS ((bfd *, const struct internal_ldsym *, struct external_ldsym *)); -static void xcoff_swap_ldrel_in - PARAMS ((bfd *, const struct external_ldrel *, struct internal_ldrel *)); -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 struct internal_reloc *xcoff_read_internal_relocs - PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean, - struct internal_reloc *)); -static boolean xcoff_link_add_object_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_check_dynamic_ar_symbols - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static bfd_size_type xcoff_find_reloc - PARAMS ((struct internal_reloc *, bfd_size_type, bfd_vma)); -static boolean xcoff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); -static boolean xcoff_link_add_dynamic_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *)); -static void xcoff_sweep PARAMS ((struct bfd_link_info *)); -static boolean xcoff_build_ldsyms - PARAMS ((struct xcoff_link_hash_entry *, PTR)); -static boolean xcoff_link_input_bfd - PARAMS ((struct xcoff_final_link_info *, bfd *)); -static boolean xcoff_write_global_symbol - PARAMS ((struct xcoff_link_hash_entry *, PTR)); -static 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)); - -/* Routines to swap information in the XCOFF .loader section. 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 in the ldhdr structure. */ - -static void -xcoff_swap_ldhdr_in (abfd, src, dst) - bfd *abfd; - const struct external_ldhdr *src; - struct internal_ldhdr *dst; -{ - dst->l_version = bfd_get_32 (abfd, src->l_version); - dst->l_nsyms = bfd_get_32 (abfd, src->l_nsyms); - dst->l_nreloc = bfd_get_32 (abfd, src->l_nreloc); - dst->l_istlen = bfd_get_32 (abfd, src->l_istlen); - dst->l_nimpid = bfd_get_32 (abfd, src->l_nimpid); - dst->l_impoff = bfd_get_32 (abfd, src->l_impoff); - dst->l_stlen = bfd_get_32 (abfd, src->l_stlen); - dst->l_stoff = bfd_get_32 (abfd, src->l_stoff); -} - -/* Swap out the ldhdr structure. */ - -static void -xcoff_swap_ldhdr_out (abfd, src, dst) - 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); -} - -/* Swap in the ldsym structure. */ - -static void -xcoff_swap_ldsym_in (abfd, src, dst) - bfd *abfd; - const struct external_ldsym *src; - struct internal_ldsym *dst; -{ - if (bfd_get_32 (abfd, src->_l._l_l._l_zeroes) != 0) - memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); - else - { - dst->_l._l_l._l_zeroes = 0; - dst->_l._l_l._l_offset = bfd_get_32 (abfd, src->_l._l_l._l_offset); - } - dst->l_value = bfd_get_32 (abfd, src->l_value); - dst->l_scnum = bfd_get_16 (abfd, src->l_scnum); - dst->l_smtype = bfd_get_8 (abfd, src->l_smtype); - dst->l_smclas = bfd_get_8 (abfd, src->l_smclas); - dst->l_ifile = bfd_get_32 (abfd, src->l_ifile); - dst->l_parm = bfd_get_32 (abfd, src->l_parm); -} - -/* Swap out the ldsym structure. */ - -static void -xcoff_swap_ldsym_out (abfd, src, dst) - bfd *abfd; - const struct internal_ldsym *src; - struct external_ldsym *dst; -{ - if (src->_l._l_l._l_zeroes != 0) - memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); - else - { - 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); - } - 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); -} - -/* Swap in the ldrel structure. */ - -static void -xcoff_swap_ldrel_in (abfd, src, dst) - bfd *abfd; - const struct external_ldrel *src; - struct internal_ldrel *dst; -{ - dst->l_vaddr = bfd_get_32 (abfd, src->l_vaddr); - dst->l_symndx = bfd_get_32 (abfd, src->l_symndx); - dst->l_rtype = bfd_get_16 (abfd, src->l_rtype); - dst->l_rsecnm = bfd_get_16 (abfd, src->l_rsecnm); -} - -/* Swap out the ldrel structure. */ +static bfd_boolean xcoff_mark (struct bfd_link_info *, asection *); -static void -xcoff_swap_ldrel_out (abfd, src, dst) - bfd *abfd; - const struct internal_ldrel *src; - struct external_ldrel *dst; -{ - 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); -} + /* Routines to read XCOFF dynamic information. This don't really belong here, but we already have the ldsym manipulation routines here. */ /* Read the contents of a section. */ -static boolean -xcoff_get_section_contents (abfd, sec) - bfd *abfd; - asection *sec; +static bfd_boolean +xcoff_get_section_contents (bfd *abfd, asection *sec) { if (coff_section_data (abfd, sec) == NULL) { - sec->used_by_bfd = bfd_zalloc (abfd, - sizeof (struct coff_section_tdata)); + 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; + return FALSE; } if (coff_section_data (abfd, sec)->contents == NULL) { - coff_section_data (abfd, sec)->contents = 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; + bfd_byte *contents; + + if (! bfd_malloc_and_get_section (abfd, sec, &contents)) + { + if (contents != NULL) + free (contents); + return FALSE; + } + coff_section_data (abfd, sec)->contents = contents; } - return true; + return TRUE; } /* Get the size required to hold the dynamic symbols. */ long -_bfd_xcoff_get_dynamic_symtab_upper_bound (abfd) - bfd *abfd; +_bfd_xcoff_get_dynamic_symtab_upper_bound (bfd *abfd) { asection *lsec; bfd_byte *contents; @@ -646,7 +180,7 @@ _bfd_xcoff_get_dynamic_symtab_upper_bound (abfd) return -1; contents = coff_section_data (abfd, lsec)->contents; - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); + bfd_xcoff_swap_ldhdr_in (abfd, (void *) contents, &ldhdr); return (ldhdr.l_nsyms + 1) * sizeof (asymbol *); } @@ -654,15 +188,13 @@ _bfd_xcoff_get_dynamic_symtab_upper_bound (abfd) /* Get the dynamic symbols. */ long -_bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) - bfd *abfd; - asymbol **psyms; +_bfd_xcoff_canonicalize_dynamic_symtab (bfd *abfd, asymbol **psyms) { asection *lsec; bfd_byte *contents; struct internal_ldhdr ldhdr; const char *strings; - struct external_ldsym *elsym, *elsymend; + bfd_byte *elsym, *elsymend; coff_symbol_type *symbuf; if ((abfd->flags & DYNAMIC) == 0) @@ -682,24 +214,24 @@ _bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) return -1; contents = coff_section_data (abfd, lsec)->contents; - coff_section_data (abfd, lsec)->keep_contents = true; + coff_section_data (abfd, lsec)->keep_contents = TRUE; - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); + 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))); + symbuf = bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (* symbuf)); if (symbuf == NULL) return -1; - elsym = (struct external_ldsym *) (contents + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - for (; elsym < elsymend; elsym++, symbuf++, psyms++) + 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++) { struct internal_ldsym ldsym; - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); + bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); symbuf->symbol.the_bfd = abfd; @@ -707,24 +239,14 @@ _bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) symbuf->symbol.name = strings + ldsym._l._l_l._l_offset; else { - int i; - - for (i = 0; i < SYMNMLEN; i++) - if (ldsym._l._l_name[i] == '\0') - break; - if (i < SYMNMLEN) - symbuf->symbol.name = elsym->_l._l_name; - else - { - char *c; - - c = bfd_alloc (abfd, SYMNMLEN + 1); - if (c == NULL) - return -1; - memcpy (c, ldsym._l._l_name, SYMNMLEN); - c[SYMNMLEN] = '\0'; - symbuf->symbol.name = c; - } + 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) @@ -739,8 +261,7 @@ _bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) symbuf->symbol.flags |= BSF_GLOBAL; /* FIXME: We have no way to record the other information stored - with the loader symbol. */ - + with the loader symbol. */ *psyms = (asymbol *) symbuf; } @@ -752,8 +273,7 @@ _bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) /* Get the size required to hold the dynamic relocs. */ long -_bfd_xcoff_get_dynamic_reloc_upper_bound (abfd) - bfd *abfd; +_bfd_xcoff_get_dynamic_reloc_upper_bound (bfd *abfd) { asection *lsec; bfd_byte *contents; @@ -776,41 +296,23 @@ _bfd_xcoff_get_dynamic_reloc_upper_bound (abfd) return -1; contents = coff_section_data (abfd, lsec)->contents; - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); + bfd_xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); return (ldhdr.l_nreloc + 1) * sizeof (arelent *); } -/* The typical dynamic reloc. */ - -static reloc_howto_type xcoff_dynamic_reloc = - HOWTO (0, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_POS", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false); /* pcrel_offset */ - /* Get the dynamic relocs. */ long -_bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) - bfd *abfd; - arelent **prelocs; - asymbol **syms; +_bfd_xcoff_canonicalize_dynamic_reloc (bfd *abfd, + arelent **prelocs, + asymbol **syms) { asection *lsec; bfd_byte *contents; struct internal_ldhdr ldhdr; arelent *relbuf; - struct external_ldrel *elrel, *elrelend; + bfd_byte *elrel, *elrelend; if ((abfd->flags & DYNAMIC) == 0) { @@ -829,20 +331,21 @@ _bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) return -1; contents = coff_section_data (abfd, lsec)->contents; - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); + bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); - relbuf = (arelent *) bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); + relbuf = bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); if (relbuf == NULL) return -1; - elrel = ((struct external_ldrel *) - (contents + LDHDRSZ + ldhdr.l_nsyms * LDSYMSZ)); - elrelend = elrel + ldhdr.l_nreloc; - for (; elrel < elrelend; elrel++, relbuf++, prelocs++) + 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; - xcoff_swap_ldrel_in (abfd, elrel, &ldrel); + bfd_xcoff_swap_ldrel_in (abfd, elrel, &ldrel); if (ldrel.l_symndx >= 3) relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3); @@ -881,9 +384,9 @@ _bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) 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 = &xcoff_dynamic_reloc; + 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. */ @@ -898,20 +401,18 @@ _bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) /* Routine to create an entry in an XCOFF link hash table. */ static struct bfd_hash_entry * -xcoff_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; +xcoff_link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, + const char *string) { struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry; /* Allocate the structure if it has not already been allocated by a subclass. */ - if (ret == (struct xcoff_link_hash_entry *) NULL) - ret = ((struct xcoff_link_hash_entry *) - bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry))); - if (ret == (struct xcoff_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; + if (ret == NULL) + ret = bfd_hash_allocate (table, sizeof (* ret)); + if (ret == NULL) + return NULL; /* Call the allocation method of the superclass. */ ret = ((struct xcoff_link_hash_entry *) @@ -936,19 +437,19 @@ xcoff_link_hash_newfunc (entry, table, string) /* Create a XCOFF link hash table. */ struct bfd_link_hash_table * -_bfd_xcoff_bfd_link_hash_table_create (abfd) - bfd *abfd; +_bfd_xcoff_bfd_link_hash_table_create (bfd *abfd) { struct xcoff_link_hash_table *ret; + bfd_size_type amt = sizeof (* ret); - ret = ((struct xcoff_link_hash_table *) - bfd_alloc (abfd, sizeof (struct xcoff_link_hash_table))); - if (ret == (struct xcoff_link_hash_table *) NULL) - return (struct bfd_link_hash_table *) NULL; - if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc)) + ret = bfd_malloc (amt); + if (ret == NULL) + return NULL; + if (!_bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc, + sizeof (struct xcoff_link_hash_entry))) { - bfd_release (abfd, ret); - return (struct bfd_link_hash_table *) NULL; + free (ret); + return NULL; } ret->debug_strtab = _bfd_xcoff_stringtab_init (); @@ -961,51 +462,41 @@ _bfd_xcoff_bfd_link_hash_table_create (abfd) 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; + 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. */ +/* Free a 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))) - -/* Get the XCOFF link hash table from the info structure. This is - just a cast. */ +void +_bfd_xcoff_bfd_link_hash_table_free (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); +} /* Read internal relocs for an XCOFF csect. This is a wrapper around _bfd_coff_read_internal_relocs which tries to take advantage of any relocs which may have been cached for the enclosing section. */ static struct internal_reloc * -xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, - require_internal, internal_relocs) - bfd *abfd; - asection *sec; - boolean cache; - bfd_byte *external_relocs; - boolean require_internal; - struct internal_reloc *internal_relocs; +xcoff_read_internal_relocs (bfd *abfd, + asection *sec, + bfd_boolean cache, + bfd_byte *external_relocs, + bfd_boolean require_internal, + struct internal_reloc *internal_relocs) { if (coff_section_data (abfd, sec) != NULL && coff_section_data (abfd, sec)->relocs == NULL @@ -1021,9 +512,8 @@ xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, && cache && enclosing->reloc_count > 0) { - if (_bfd_coff_read_internal_relocs (abfd, enclosing, true, - external_relocs, false, - (struct internal_reloc *) NULL) + if (_bfd_coff_read_internal_relocs (abfd, enclosing, TRUE, + external_relocs, FALSE, NULL) == NULL) return NULL; } @@ -1036,6 +526,7 @@ xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, 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, @@ -1049,271 +540,344 @@ xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, require_internal, internal_relocs); } -/* Given an XCOFF BFD, add symbols to the global hash table as - appropriate. */ +/* This function is used to add symbols from a dynamic object to the + global symbol table. */ -boolean -_bfd_xcoff_bfd_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; +static bfd_boolean +xcoff_link_add_dynamic_symbols (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: - /* We need to look through the archive for stripped dynamic - objects, because they will not appear in the archive map even - though they should, perhaps, be included. Also, if the - linker has no map, we just consider each object file in turn, - since that apparently is what the AIX native linker does. */ - { - bfd *member; - - member = bfd_openr_next_archived_file (abfd, (bfd *) NULL); - while (member != NULL) - { - if (bfd_check_format (member, bfd_object) - && (! bfd_has_map (abfd) - || ((member->flags & DYNAMIC) != 0 - && (member->flags & HAS_SYMS) == 0))) - { - 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); - } - - if (! bfd_has_map (abfd)) - return true; - - /* Now do the usual search. */ - return (_bfd_generic_link_add_archive_symbols - (abfd, info, xcoff_link_check_archive_element)); - } - - default: - bfd_set_error (bfd_error_wrong_format); - return false; - } -} - -/* Add symbols from an XCOFF object file. */ + 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; + const char *s; + unsigned int c; + struct xcoff_import_file **pp; -static boolean -xcoff_link_add_object_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - if (! xcoff_link_add_symbols (abfd, info)) - return false; - if (! info->keep_memory) + /* We can only handle a dynamic object if we are generating an XCOFF + output file. */ + if (info->hash->creator != abfd->xvec) { - if (! _bfd_coff_free_symbols (abfd)) - return false; + (*_bfd_error_handler) + (_("%s: XCOFF shared object when not producing XCOFF output"), + bfd_get_filename (abfd)); + bfd_set_error (bfd_error_invalid_operation); + return FALSE; } - return true; -} - -/* Check a single archive element to see if we need to include it in - the link. *PNEEDED is set according to whether this element is - needed in the link or not. This is called via - _bfd_generic_link_add_archive_symbols. */ - -static boolean -xcoff_link_check_archive_element (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - if (! xcoff_link_check_ar_symbols (abfd, info, pneeded)) - 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. */ - if (*pneeded) + /* 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) { - if (! xcoff_link_add_symbols (abfd, info)) - return false; + (*_bfd_error_handler) + (_("%s: dynamic object with no .loader section"), + bfd_get_filename (abfd)); + bfd_set_error (bfd_error_no_symbols); + return FALSE; } - if (! info->keep_memory || ! *pneeded) - { - if (! _bfd_coff_free_symbols (abfd)) - return false; - } + if (! xcoff_get_section_contents (abfd, lsec)) + return FALSE; + contents = coff_section_data (abfd, lsec)->contents; - return true; -} + /* Remove the sections from this object, so that they do not get + included in the link. */ + bfd_section_list_clear (abfd); -/* Look through the symbols to see if this object file should be - included in the link. */ + bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); -static boolean -xcoff_link_check_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - bfd_size_type symesz; - bfd_byte *esym; - bfd_byte *esym_end; + strings = (char *) contents + ldhdr.l_stoff; - *pneeded = false; + elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr); - if ((abfd->flags & DYNAMIC) != 0 - && ! info->static_link - && info->hash->creator == abfd->xvec) - return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded); + elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(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) + 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); - if (sym.n_sclass == C_EXT && sym.n_scnum != N_UNDEF) + /* 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 { - const char *name; - char buf[SYMNMLEN + 1]; - struct bfd_link_hash_entry *h; + memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); + nambuf[SYMNMLEN] = '\0'; + name = nambuf; + } - /* This symbol is externally visible, and is defined by this - object file. */ + /* 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. */ - 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); + h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, + TRUE, TRUE); + if (h == NULL) + return FALSE; - /* We are only interested in symbols that are currently - undefined. If a symbol is currently known to be common, - XCOFF linkers do not bring in an object file which - 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 - && (info->hash->creator != abfd->xvec - || (((struct xcoff_link_hash_entry *) h)->flags - & XCOFF_DEF_DYNAMIC) == 0)) + 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) { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; + 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) + { + 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; } - /* We do not need this object file. */ - return true; + /* Record this file in the import files. */ + n = bfd_alloc (abfd, (bfd_size_type) sizeof (struct xcoff_import_file)); + if (n == NULL) + return FALSE; + n->next = NULL; + + /* For some reason, the path entry in the import file list for a + shared object appears to always be empty. The file name is the + base name. */ + n->path = ""; + if (abfd->my_archive == NULL) + { + bname = bfd_get_filename (abfd); + mname = ""; + } + else + { + bname = bfd_get_filename (abfd->my_archive); + mname = bfd_get_filename (abfd); + } + s = strrchr (bname, '/'); + if (s != NULL) + bname = s + 1; + n->file = bname; + n->member = mname; + + /* We start c at 1 because the first import file number is reserved + for LIBPATH. */ + for (pp = &xcoff_hash_table (info)->imports, c = 1; + *pp != NULL; + pp = &(*pp)->next, ++c) + ; + *pp = n; + + xcoff_data (abfd)->import_file_id = c; + + return TRUE; } -/* 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. */ +/* xcoff_link_create_extra_sections -static boolean -xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - asection *lsec; - bfd_byte *buf; - struct internal_ldhdr ldhdr; - const char *strings; - struct external_ldsym *elsym, *elsymend; + Takes care of creating the .loader, .gl, .ds, .debug and sections. */ - *pneeded = false; +static bfd_boolean +xcoff_link_create_extra_sections (bfd * abfd, struct bfd_link_info *info) +{ + bfd_boolean return_value = FALSE; - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) + if (info->hash->creator == abfd->xvec) { - /* There are no symbols, so don't try to include it. */ - return true; - } + /* 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_get_section_contents (abfd, lsec)) - return false; - buf = coff_section_data (abfd, lsec)->contents; + if (xcoff_hash_table (info)->loader_section == NULL) + { + asection *lsec; + flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); + lsec = bfd_make_section_anyway_with_flags (abfd, ".loader", flags); + if (lsec == NULL) + goto end_return; - strings = (char *) buf + ldhdr.l_stoff; + xcoff_hash_table (info)->loader_section = lsec; + } - elsym = (struct external_ldsym *) (buf + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - for (; elsym < elsymend; elsym++) - { - struct internal_ldsym ldsym; - char nambuf[SYMNMLEN + 1]; - const char *name; - struct bfd_link_hash_entry *h; + /* Likewise for the linkage section. */ + if (xcoff_hash_table (info)->linkage_section == NULL) + { + asection *lsec; + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY); - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); + lsec = bfd_make_section_anyway_with_flags (abfd, ".gl", flags); + if (lsec == NULL) + goto end_return; - /* We are only interested in exported symbols. */ - if ((ldsym.l_smtype & L_EXPORT) == 0) - continue; + xcoff_hash_table (info)->linkage_section = lsec; + lsec->alignment_power = 2; + } - if (ldsym._l._l_l._l_zeroes == 0) - name = strings + ldsym._l._l_l._l_offset; - else + /* Likewise for the TOC section. */ + if (xcoff_hash_table (info)->toc_section == NULL) { - memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); - nambuf[SYMNMLEN] = '\0'; - name = nambuf; + asection *tsec; + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY); + + tsec = bfd_make_section_anyway_with_flags (abfd, ".tc", flags); + if (tsec == NULL) + goto end_return; + + xcoff_hash_table (info)->toc_section = tsec; + tsec->alignment_power = 2; } - h = bfd_link_hash_lookup (info->hash, name, false, false, true); + /* Likewise for the descriptor section. */ + if (xcoff_hash_table (info)->descriptor_section == NULL) + { + asection *dsec; + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY); + + dsec = bfd_make_section_anyway_with_flags (abfd, ".ds", flags); + if (dsec == NULL) + goto end_return; - /* 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) + xcoff_hash_table (info)->descriptor_section = dsec; + dsec->alignment_power = 2; + } + + /* Likewise for the .debug section. */ + if (xcoff_hash_table (info)->debug_section == NULL + && info->strip != strip_all) { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; + asection *dsec; + flagword flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; + + dsec = bfd_make_section_anyway_with_flags (abfd, ".debug", flags); + if (dsec == NULL) + goto end_return; + + xcoff_hash_table (info)->debug_section = dsec; } } - /* We do not need this shared object. */ + return_value = TRUE; - if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) - { - free (coff_section_data (abfd, lsec)->contents); - coff_section_data (abfd, lsec)->contents = NULL; - } + end_return: - return true; + return return_value; } /* 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; +xcoff_find_reloc (struct internal_reloc *relocs, + bfd_size_type count, + bfd_vma address) { bfd_size_type min, max, this; @@ -1374,21 +938,19 @@ xcoff_find_reloc (relocs, count, address) relocation entries carefully, since the only way to tell which csect they belong to is to examine the address. */ -static boolean -xcoff_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; +static bfd_boolean +xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info) { unsigned int n_tmask; unsigned int n_btshft; - boolean default_copy; + 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; - boolean keep_syms; + bfd_boolean keep_syms; asection *csect; unsigned int csect_index; asection *first_csect; @@ -1396,89 +958,29 @@ xcoff_link_add_symbols (abfd, info) bfd_byte *esym; bfd_byte *esym_end; struct reloc_info_struct - { - struct internal_reloc *relocs; - asection **csects; - bfd_byte *linenos; - } *reloc_info = NULL; + { + 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; + return FALSE; } - if (info->hash->creator == abfd->xvec) - { - /* 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 error_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 error_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 error_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 error_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) - { - 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; - } - } + /* 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; + return TRUE; n_tmask = coff_data (abfd)->local_n_tmask; n_btshft = coff_data (abfd)->local_n_btshft; @@ -1488,46 +990,39 @@ xcoff_link_add_symbols (abfd, info) #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 = bfd_zalloc (abfd, amt); if (sym_hash == NULL && symcount != 0) 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 = bfd_zalloc (abfd, amt); if (csect_cache == NULL && symcount != 0) 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 *) - bfd_malloc ((abfd->section_count + 1) - * sizeof (struct reloc_info_struct))); + amt = abfd->section_count + 1; + amt *= sizeof (struct reloc_info_struct); + reloc_info = bfd_zmalloc (amt); if (reloc_info == NULL) goto error_return; - memset ((PTR) reloc_info, 0, - (abfd->section_count + 1) * sizeof (struct reloc_info_struct)); /* Read in the relocs and line numbers for each section. */ linesz = bfd_coff_linesz (abfd); @@ -1535,17 +1030,16 @@ xcoff_link_add_symbols (abfd, info) for (o = abfd->sections; o != NULL; o = o->next) { last_real = o; + if ((o->flags & SEC_RELOC) != 0) { reloc_info[o->target_index].relocs = - xcoff_read_internal_relocs (abfd, o, true, (bfd_byte *) NULL, - false, (struct internal_reloc *) NULL); - reloc_info[o->target_index].csects = - (asection **) bfd_malloc (o->reloc_count * sizeof (asection *)); + xcoff_read_internal_relocs (abfd, o, TRUE, NULL, FALSE, NULL); + amt = o->reloc_count; + amt *= sizeof (asection *); + reloc_info[o->target_index].csects = bfd_zmalloc (amt); if (reloc_info[o->target_index].csects == NULL) goto error_return; - memset (reloc_info[o->target_index].csects, 0, - o->reloc_count * sizeof (asection *)); } if ((info->strip == strip_none || info->strip == strip_some) @@ -1553,20 +1047,19 @@ xcoff_link_add_symbols (abfd, info) { bfd_byte *linenos; - linenos = (bfd_byte *) bfd_malloc (o->lineno_count * linesz); + amt = linesz * o->lineno_count; + linenos = bfd_malloc (amt); if (linenos == NULL) goto error_return; reloc_info[o->target_index].linenos = linenos; if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0 - || (bfd_read (linenos, linesz, o->lineno_count, abfd) - != linesz * o->lineno_count)) + || 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; @@ -1576,6 +1069,7 @@ xcoff_link_add_symbols (abfd, info) 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; @@ -1588,12 +1082,18 @@ xcoff_link_add_symbols (abfd, info) bfd_vma value; struct xcoff_link_hash_entry *set_toc; - bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); + bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &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 = @@ -1612,19 +1112,21 @@ xcoff_link_add_symbols (abfd, info) 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 @@ -1632,33 +1134,35 @@ xcoff_link_add_symbols (abfd, info) { union internal_auxent auxlin; - bfd_coff_swap_aux_in (abfd, (PTR) (esym + symesz), + bfd_coff_swap_aux_in (abfd, (void *) (esym + symesz), sym.n_type, sym.n_sclass, - 0, sym.n_numaux, (PTR) &auxlin); + 0, sym.n_numaux, (void *) &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_get_filename (abfd), name); + (_("%B: `%s' has line numbers but no enclosing section"), + 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; linpstart = (reloc_info[enclosing->target_index].linenos + linoff); - bfd_coff_swap_lineno_in (abfd, (PTR) linpstart, (PTR) &lin); + bfd_coff_swap_lineno_in (abfd, (void *) linpstart, (void *) &lin); if (lin.l_lnno == 0 && ((bfd_size_type) lin.l_addr.l_symndx == ((esym @@ -1673,16 +1177,16 @@ xcoff_link_add_symbols (abfd, info) linp < linpend; linp += linesz) { - bfd_coff_swap_lineno_in (abfd, (PTR) linp, - (PTR) &lin); + bfd_coff_swap_lineno_in (abfd, (void *) linp, + (void *) &lin); if (lin.l_lnno == 0) break; } 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; @@ -1692,21 +1196,20 @@ xcoff_link_add_symbols (abfd, info) } /* Pick up the csect auxiliary information. */ - 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); + (_("%B: class %d symbol `%s' has no aux entries"), + abfd, sym.n_sclass, name); bfd_set_error (bfd_error_bad_value); goto error_return; } bfd_coff_swap_aux_in (abfd, - (PTR) (esym + symesz * sym.n_numaux), + (void *) (esym + symesz * sym.n_numaux), sym.n_type, sym.n_sclass, sym.n_numaux - 1, sym.n_numaux, - (PTR) &aux); + (void *) &aux); smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); @@ -1719,8 +1222,8 @@ xcoff_link_add_symbols (abfd, info) { default: (*_bfd_error_handler) - ("%s: symbol `%s' has unrecognized csect type %d", - bfd_get_filename (abfd), name, smtyp); + (_("%B: symbol `%s' has unrecognized csect type %d"), + abfd, name, smtyp); bfd_set_error (bfd_error_bad_value); goto error_return; @@ -1731,15 +1234,15 @@ xcoff_link_add_symbols (abfd, info) || 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, + (_("%B: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d"), + abfd, name, sym.n_sclass, sym.n_scnum, aux.x_csect.x_scnlen.l); bfd_set_error (bfd_error_bad_value); goto error_return; } /* An XMC_XO external reference is actually a reference to - an absolute location. */ + an absolute location. */ if (aux.x_csect.x_smclas != XMC_XO) section = bfd_und_section_ptr; else @@ -1751,17 +1254,14 @@ xcoff_link_add_symbols (abfd, info) 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) @@ -1770,9 +1270,8 @@ xcoff_link_add_symbols (abfd, info) || 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, - aux.x_csect.x_scnlen.l); + (_("%B: XMC_TC0 symbol `%s' is class %d scnlen %d"), + abfd, name, sym.n_sclass, aux.x_csect.x_scnlen.l); bfd_set_error (bfd_error_bad_value); goto error_return; } @@ -1781,14 +1280,25 @@ xcoff_link_add_symbols (abfd, info) /* 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; @@ -1800,25 +1310,32 @@ xcoff_link_add_symbols (abfd, info) goto error_return; relocs = reloc_info[enclosing->target_index].relocs; - relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, - sym.n_value); + 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_size == 31 - && rel->r_type == R_POS) + && 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) + rel->r_symndx * symesz); - bfd_coff_swap_sym_in (abfd, (PTR) erelsym, (PTR) &relsym); + bfd_coff_swap_sym_in (abfd, (void *) erelsym, (void *) &relsym); if (relsym.n_sclass == C_EXT) { 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 @@ -1829,18 +1346,18 @@ xcoff_link_add_symbols (abfd, info) goto error_return; /* 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. */ + 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. */ if (strcmp (name, relname) == 0) { 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); + relname, TRUE, copy, + FALSE); if (h == NULL) goto error_return; @@ -1876,45 +1393,31 @@ xcoff_link_add_symbols (abfd, info) } } - /* 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; - 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) - { - (*_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; - } + /* 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_name = csect_name_by_class[aux.x_csect.x_smclas]; - csect = bfd_make_section_anyway (abfd, csect_name); - if (csect == NULL) + csect = bfd_xcoff_create_csect_from_smclas(abfd, &aux, name); + if (NULL == csect) 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_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))) + > enclosing->vma + enclosing->size))) { (*_bfd_error_handler) - ("%s: csect `%s' not in enclosing section", - bfd_get_filename (abfd), name); + (_("%B: csect `%s' not in enclosing section"), + abfd, name); bfd_set_error (bfd_error_bad_value); goto error_return; } @@ -1922,19 +1425,18 @@ xcoff_link_add_symbols (abfd, info) csect->filepos = (enclosing->filepos + sym.n_value - enclosing->vma); - csect->_raw_size = aux.x_csect.x_scnlen.l; + csect->size = aux.x_csect.x_scnlen.l; csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); /* 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 = bfd_zalloc (abfd, amt); if (csect->used_by_bfd == NULL) goto error_return; - coff_section_data (abfd, csect)->tdata = - bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); + amt = sizeof (struct xcoff_section_tdata); + coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); if (coff_section_data (abfd, csect)->tdata == NULL) goto error_return; xcoff_section_data (abfd, csect)->enclosing = enclosing; @@ -1949,17 +1451,20 @@ xcoff_link_add_symbols (abfd, info) asection **rel_csect; relocs = reloc_info[enclosing->target_index].relocs; - relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, - csect->vma); + 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) + && rel->r_vaddr < csect->vma + csect->size) { + *rel_csect = csect; csect->flags |= SEC_RELOC; ++csect->reloc_count; @@ -1997,41 +1502,44 @@ xcoff_link_add_symbols (abfd, info) 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); + (_("%B: misplaced XTY_LD `%s'"), + 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) { @@ -2041,12 +1549,21 @@ xcoff_link_add_symbols (abfd, info) / 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_with_flags (abfd, ".td", + SEC_ALLOC); + } + else + csect = bfd_make_section_anyway_with_flags (abfd, ".bss", + SEC_ALLOC); + if (csect == NULL) goto error_return; csect->vma = sym.n_value; - csect->_raw_size = aux.x_csect.x_scnlen.l; - csect->flags |= SEC_ALLOC; + csect->size = aux.x_csect.x_scnlen.l; csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); /* There are a number of other fields and section flags which we do not bother to set. */ @@ -2055,13 +1572,12 @@ xcoff_link_add_symbols (abfd, info) - (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 = bfd_zalloc (abfd, amt); if (csect->used_by_bfd == NULL) goto error_return; - coff_section_data (abfd, csect)->tdata = - bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); + amt = sizeof (struct xcoff_section_tdata); + coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt); if (coff_section_data (abfd, csect)->tdata == NULL) goto error_return; xcoff_section_data (abfd, csect)->first_symndx = csect_index; @@ -2072,7 +1588,7 @@ xcoff_link_add_symbols (abfd, info) if (sym.n_sclass == C_EXT) { csect->flags |= SEC_IS_COMMON; - csect->_raw_size = 0; + csect->size = 0; section = csect; value = aux.x_csect.x_scnlen.l; } @@ -2085,58 +1601,81 @@ xcoff_link_add_symbols (abfd, info) && aux.x_csect.x_smclas != XMC_TC && aux.x_csect.x_smclas != XMC_TD) { - int i; + int i = -1; - i = -1; if (name[0] == '_') { if (strcmp (name, "_text") == 0) - i = 0; + i = XCOFF_SPECIAL_SECTION_TEXT; else if (strcmp (name, "_etext") == 0) - i = 1; + i = XCOFF_SPECIAL_SECTION_ETEXT; else if (strcmp (name, "_data") == 0) - i = 2; + i = XCOFF_SPECIAL_SECTION_DATA; else if (strcmp (name, "_edata") == 0) - i = 3; + i = XCOFF_SPECIAL_SECTION_EDATA; else if (strcmp (name, "_end") == 0) - i = 4; + i = XCOFF_SPECIAL_SECTION_END; } else if (name[0] == 'e' && strcmp (name, "end") == 0) - i = 5; + 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. */ + linker hash table. */ if (sym.n_sclass == C_EXT) { - boolean copy; + 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. */ + 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; - - if (info->hash->creator == abfd->xvec) + 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 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 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. */ if (! bfd_is_und_section (section)) *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info), - name, true, copy, false); + 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, copy, false)); + TRUE, TRUE, FALSE)); + if (*sym_hash == NULL) goto error_return; if (((*sym_hash)->root.type == bfd_link_hash_defined @@ -2144,25 +1683,79 @@ xcoff_link_add_symbols (abfd, info) && ! bfd_is_und_section (section) && ! bfd_is_com_section (section)) { - /* If the existing symbol is to global linkage code, - and this symbol is not global linkage code, then - replace the existing symbol. */ + /* 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.u.undef.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, + NULL, 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; } } @@ -2180,7 +1773,7 @@ xcoff_link_add_symbols (abfd, info) last_real->next = NULL; if (! (_bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, - (const char *) NULL, copy, true, + NULL, copy, TRUE, (struct bfd_link_hash_entry **) sym_hash))) goto error_return; last_real->next = first_csect; @@ -2189,18 +1782,14 @@ xcoff_link_add_symbols (abfd, info) { 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; - } + /* We don't need the common csect we just created. */ + csect->size = 0; else - { - (*sym_hash)->root.u.c.p->alignment_power - = csect->alignment_power; - } + (*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; @@ -2233,7 +1822,7 @@ xcoff_link_add_symbols (abfd, info) 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->size = 0; o->lineno_count = 0; if ((o->flags & SEC_RELOC) != 0) @@ -2244,13 +1833,14 @@ xcoff_link_add_symbols (abfd, info) 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), o->name, i); + (_("%B: reloc %s:%d not in csect"), + abfd, o->name, i); bfd_set_error (bfd_error_bad_value); goto error_return; } @@ -2258,7 +1848,7 @@ xcoff_link_add_symbols (abfd, info) /* 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 + if (info->hash->creator == abfd->xvec && *rel_csect != bfd_und_section_ptr && (rel->r_type == R_BR || rel->r_type == R_RBR) @@ -2269,33 +1859,35 @@ xcoff_link_add_symbols (abfd, info) 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. */ + 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; + struct bfd_link_hash_entry *bh; hds = xcoff_link_hash_lookup (xcoff_hash_table (info), h->root.root.string + 1, - true, false, true); + TRUE, FALSE, TRUE); if (hds == NULL) goto error_return; if (hds->root.type == bfd_link_hash_new) { + 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, - (struct bfd_link_hash_entry **) &hds))) + (bfd_vma) 0, NULL, FALSE, + TRUE, &bh))) goto error_return; + hds = (struct xcoff_link_hash_entry *) bh; } hds->flags |= XCOFF_DESCRIPTOR; BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0 @@ -2326,7 +1918,7 @@ xcoff_link_add_symbols (abfd, info) } /* Free up the line numbers. FIXME: We could cache these - somewhere for the final link, to avoid reading them again. */ + somewhere for the final link, to avoid reading them again. */ if (reloc_info[o->target_index].linenos != NULL) { free (reloc_info[o->target_index].linenos); @@ -2338,7 +1930,7 @@ xcoff_link_add_symbols (abfd, info) obj_coff_keep_syms (abfd) = keep_syms; - return true; + return TRUE; error_return: if (reloc_info != NULL) @@ -2350,90 +1942,73 @@ xcoff_link_add_symbols (abfd, info) 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 #undef N_BTSHFT -/* This function is used to add symbols from a dynamic object to the - global symbol table. */ +/* Add symbols from an XCOFF object file. */ -static boolean -xcoff_link_add_dynamic_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; +static bfd_boolean +xcoff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info) +{ + if (! _bfd_coff_get_external_symbols (abfd)) + return FALSE; + if (! xcoff_link_add_symbols (abfd, info)) + return FALSE; + if (! info->keep_memory) + { + if (! _bfd_coff_free_symbols (abfd)) + return FALSE; + } + return TRUE; +} + +/* 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 bfd_boolean +xcoff_link_check_dynamic_ar_symbols (bfd *abfd, + struct bfd_link_info *info, + bfd_boolean *pneeded) { asection *lsec; - bfd_byte *buf; + bfd_byte *contents; struct internal_ldhdr ldhdr; const char *strings; - struct external_ldsym *elsym, *elsymend; - struct xcoff_import_file *n; - const char *bname; - const char *mname; - const char *s; - unsigned int c; - struct xcoff_import_file **pp; - - /* We can only handle a dynamic object if we are generating an XCOFF - output file. */ - if (info->hash->creator != abfd->xvec) - { - (*_bfd_error_handler) - ("%s: XCOFF shared object when not producing XCOFF output", - bfd_get_filename (abfd)); - bfd_set_error (bfd_error_invalid_operation); - return false; - } + bfd_byte *elsym, *elsymend; - /* 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. */ + *pneeded = FALSE; - /* 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; - } + /* There are no symbols, so don't try to include it. */ + return TRUE; if (! xcoff_get_section_contents (abfd, lsec)) - return false; - buf = coff_section_data (abfd, lsec)->contents; + 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_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr); - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); + strings = (char *) contents + ldhdr.l_stoff; - strings = (char *) buf + ldhdr.l_stoff; + elsym = contents + bfd_xcoff_loader_symbol_offset (abfd, &ldhdr); - elsym = (struct external_ldsym *) (buf + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - BFD_ASSERT (sizeof (struct external_ldsym) == LDSYMSZ); - for (; elsym < elsymend; elsym++) + elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz (abfd); + for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz (abfd)) { struct internal_ldsym ldsym; char nambuf[SYMNMLEN + 1]; const char *name; - struct xcoff_link_hash_entry *h; + struct bfd_link_hash_entry *h; - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); + bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym); /* We are only interested in exported symbols. */ if ((ldsym.l_smtype & L_EXPORT) == 0) @@ -2448,115 +2023,194 @@ xcoff_link_add_dynamic_symbols (abfd, info) name = nambuf; } - /* 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 + 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; + } + } - h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, - true, true); - if (h == NULL) - return false; + /* 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; + } - h->flags |= XCOFF_DEF_DYNAMIC; + return TRUE; +} - /* 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; +/* Look through the symbols to see if this object file should be + included in the link. */ - 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. */ - } +static bfd_boolean +xcoff_link_check_ar_symbols (bfd *abfd, + struct bfd_link_info *info, + bfd_boolean *pneeded) +{ + bfd_size_type symesz; + bfd_byte *esym; + bfd_byte *esym_end; - if (h->smclas == XMC_UA - || h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - h->smclas = ldsym.l_smclas; + *pneeded = FALSE; - /* 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 ((abfd->flags & DYNAMIC) != 0 + && ! info->static_link + && info->hash->creator == abfd->xvec) + return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded); - if (h->smclas == XMC_XO - && (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak)) + 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) + { + struct internal_syment sym; + + bfd_coff_swap_sym_in (abfd, (void *) esym, (void *) &sym); + + if (sym.n_sclass == C_EXT && sym.n_scnum != N_UNDEF) { - /* 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; + const char *name; + char buf[SYMNMLEN + 1]; + struct bfd_link_hash_entry *h; + + /* This symbol is externally visible, and is defined by this + 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); + + /* We are only interested in symbols that are currently + undefined. If a symbol is currently known to be common, + XCOFF linkers do not bring in an object file which + defines it. We also don't bring in symbols to satisfy + undefined references in shared objects. */ + if (h != NULL + && 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; + } } - } - if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) - { - free (coff_section_data (abfd, lsec)->contents); - coff_section_data (abfd, lsec)->contents = NULL; + esym += (sym.n_numaux + 1) * symesz; } - /* Record this file in the import files. */ + /* We do not need this object file. */ + return TRUE; +} - n = ((struct xcoff_import_file *) - bfd_alloc (abfd, sizeof (struct xcoff_import_file))); - if (n == NULL) - return false; - n->next = NULL; +/* Check a single archive element to see if we need to include it in + the link. *PNEEDED is set according to whether this element is + needed in the link or not. This is called via + _bfd_generic_link_add_archive_symbols. */ - /* For some reason, the path entry in the import file list for a - shared object appears to always be empty. The file name is the - base name. */ - n->path = ""; - if (abfd->my_archive == NULL) +static bfd_boolean +xcoff_link_check_archive_element (bfd *abfd, + struct bfd_link_info *info, + bfd_boolean *pneeded) +{ + if (! _bfd_coff_get_external_symbols (abfd)) + return FALSE; + + if (! xcoff_link_check_ar_symbols (abfd, info, pneeded)) + return FALSE; + + if (*pneeded) { - bname = bfd_get_filename (abfd); - mname = ""; + if (! xcoff_link_add_symbols (abfd, info)) + return FALSE; } - else + + if (! info->keep_memory || ! *pneeded) { - bname = bfd_get_filename (abfd->my_archive); - mname = bfd_get_filename (abfd); + if (! _bfd_coff_free_symbols (abfd)) + return FALSE; } - s = strrchr (bname, '/'); - if (s != NULL) - bname = s + 1; - n->file = bname; - n->member = mname; - /* We start c at 1 because the first import file number is reserved - for LIBPATH. */ - for (pp = &xcoff_hash_table (info)->imports, c = 1; - *pp != NULL; - pp = &(*pp)->next, ++c) - ; - *pp = n; + return TRUE; +} - xcoff_data (abfd)->import_file_id = c; +/* Given an XCOFF BFD, add symbols to the global hash table as + appropriate. */ + +bfd_boolean +_bfd_xcoff_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info) +{ + switch (bfd_get_format (abfd)) + { + case bfd_object: + return xcoff_link_add_object_symbols (abfd, info); - return true; + case bfd_archive: + /* 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, 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; + } } -/* Routines that are called after all the input files have been - handled, but before the sections are laid out in memory. */ - /* Mark a symbol as not being garbage, including the section in which it is defined. */ -static INLINE boolean -xcoff_mark_symbol (info, h) - struct bfd_link_info *info; - struct xcoff_link_hash_entry *h; +static inline bfd_boolean +xcoff_mark_symbol (struct bfd_link_info *info, struct xcoff_link_hash_entry *h) { if ((h->flags & XCOFF_MARK) != 0) - return true; + return TRUE; h->flags |= XCOFF_MARK; if (h->root.type == bfd_link_hash_defined @@ -2565,10 +2219,11 @@ xcoff_mark_symbol (info, h) asection *hsec; hsec = h->root.u.def.section; - if ((hsec->flags & SEC_MARK) == 0) + if (! bfd_is_abs_section (hsec) + && (hsec->flags & SEC_MARK) == 0) { if (! xcoff_mark (info, hsec)) - return false; + return FALSE; } } @@ -2576,10 +2231,10 @@ xcoff_mark_symbol (info, h) && (h->toc_section->flags & SEC_MARK) == 0) { if (! xcoff_mark (info, h->toc_section)) - return false; + return FALSE; } - return true; + return TRUE; } /* The mark phase of garbage collection. For a given section, mark @@ -2588,13 +2243,12 @@ xcoff_mark_symbol (info, h) the number of relocs which need to be copied into the .loader section. */ -static boolean -xcoff_mark (info, sec) - struct bfd_link_info *info; - asection *sec; +static bfd_boolean +xcoff_mark (struct bfd_link_info *info, asection *sec) { - if ((sec->flags & SEC_MARK) != 0) - return true; + if (bfd_is_abs_section (sec) + || (sec->flags & SEC_MARK) != 0) + return TRUE; sec->flags |= SEC_MARK; @@ -2602,38 +2256,35 @@ xcoff_mark (info, sec) && coff_section_data (sec->owner, sec) != NULL && xcoff_section_data (sec->owner, sec) != NULL) { - register struct xcoff_link_hash_entry **hp, **hpend; + 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; + struct xcoff_link_hash_entry *h; h = *hp; if (h != NULL && (h->flags & XCOFF_MARK) == 0) { if (! xcoff_mark_symbol (info, h)) - return false; + return FALSE; } } /* Look through the section relocs. */ - 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); + rel = xcoff_read_internal_relocs (sec->owner, sec, TRUE, + NULL, FALSE, NULL); if (rel == NULL) - return false; + return FALSE; relend = rel + sec->reloc_count; for (; rel < relend; rel++) { @@ -2649,7 +2300,7 @@ xcoff_mark (info, sec) && (h->flags & XCOFF_MARK) == 0) { if (! xcoff_mark_symbol (info, h)) - return false; + return FALSE; } rsec = xcoff_data (sec->owner)->csects[rel->r_symndx]; @@ -2657,11 +2308,11 @@ xcoff_mark (info, sec) && (rsec->flags & SEC_MARK) == 0) { if (! xcoff_mark (info, rsec)) - return false; + return FALSE; } /* See if this reloc needs to be copied into the .loader - section. */ + section. */ switch (rel->r_type) { default: @@ -2675,7 +2326,6 @@ xcoff_mark (info, sec) && h->root.root.string[0] == '.' && h->descriptor != NULL && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0 - || info->shared || ((h->descriptor->flags & XCOFF_IMPORT) != 0 && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0)))) @@ -2711,15 +2361,17 @@ xcoff_mark (info, sec) } } - return true; + return TRUE; } +/* Routines that are called after all the input files have been + handled, but before the sections are laid out in memory. */ + /* The sweep phase of garbage collection. Remove all garbage sections. */ static void -xcoff_sweep (info) - struct bfd_link_info *info; +xcoff_sweep (struct bfd_link_info *info) { bfd *sub; @@ -2732,8 +2384,8 @@ xcoff_sweep (info) if ((o->flags & SEC_MARK) == 0) { /* Keep all sections from non-XCOFF input files. Keep - special sections. Keep .debug sections for the - moment. */ + 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 @@ -2744,7 +2396,7 @@ xcoff_sweep (info) o->flags |= SEC_MARK; else { - o->_raw_size = 0; + o->size = 0; o->reloc_count = 0; o->lineno_count = 0; } @@ -2756,27 +2408,26 @@ xcoff_sweep (info) /* Record the number of elements in a set. This is used to output the correct csect length. */ -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; +bfd_boolean +bfd_xcoff_link_record_set (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 (! XCOFF_XVECP (output_bfd->xvec)) - return true; + 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. */ - - n = ((struct xcoff_link_size_list *) - bfd_alloc (output_bfd, sizeof (struct xcoff_link_size_list))); + amt = sizeof (* n); + n = bfd_alloc (output_bfd, amt); if (n == NULL) - return false; + return FALSE; n->next = xcoff_hash_table (info)->size_list; n->h = h; n->size = size; @@ -2784,28 +2435,63 @@ bfd_xcoff_link_record_set (output_bfd, info, harg, size) h->flags |= XCOFF_HAS_SIZE; - return true; + return TRUE; } /* Import a symbol. */ -boolean -bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, - impmember) - 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; +bfd_boolean +bfd_xcoff_import_symbol (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 (! XCOFF_XVECP (output_bfd->xvec)) - return true; + 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; + h->flags |= (XCOFF_IMPORT | syscall_flag); if (val != (bfd_vma) -1) { @@ -2817,7 +2503,7 @@ bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, (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; + return FALSE; } h->root.type = bfd_link_hash_defined; @@ -2825,23 +2511,19 @@ bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, h->root.u.def.value = val; } - if (h->ldsym == NULL) - { - h->ldsym = ((struct internal_ldsym *) - bfd_zalloc (output_bfd, sizeof (struct internal_ldsym))); - if (h->ldsym == NULL) - return false; - } - + /* 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->ldsym->l_ifile = (bfd_size_type) -1; + 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. */ + reserved for the library search path. */ for (pp = &xcoff_hash_table (info)->imports, c = 1; *pp != NULL; pp = &(*pp)->next, ++c) @@ -2855,11 +2537,11 @@ bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, if (*pp == NULL) { struct xcoff_import_file *n; + bfd_size_type amt = sizeof (* n); - n = ((struct xcoff_import_file *) - bfd_alloc (output_bfd, sizeof (struct xcoff_import_file))); + n = bfd_alloc (output_bfd, amt); if (n == NULL) - return false; + return FALSE; n->next = NULL; n->path = imppath; n->file = impfile; @@ -2867,25 +2549,23 @@ bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, *pp = n; } - h->ldsym->l_ifile = c; + h->ldindx = c; } - return true; + return TRUE; } /* Export a symbol. */ -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; +bfd_boolean +bfd_xcoff_export_symbol (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 (! XCOFF_XVECP (output_bfd->xvec)) - return true; + if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) + return TRUE; h->flags |= XCOFF_EXPORT; @@ -2899,14 +2579,15 @@ bfd_xcoff_export_symbol (output_bfd, info, harg, syscall) { char *fnname; struct xcoff_link_hash_entry *hfn; + bfd_size_type amt = strlen (h->root.root.string) + 2; - fnname = (char *) bfd_malloc (strlen (h->root.root.string) + 2); + fnname = bfd_malloc (amt); if (fnname == NULL) - return false; + return FALSE; fnname[0] = '.'; strcpy (fnname + 1, h->root.root.string); hfn = xcoff_link_hash_lookup (xcoff_hash_table (info), - fnname, false, false, true); + fnname, FALSE, FALSE, TRUE); free (fnname); if (hfn != NULL && hfn->smclas == XMC_PR @@ -2921,7 +2602,7 @@ bfd_xcoff_export_symbol (output_bfd, info, harg, syscall) /* Make sure we don't garbage collect this symbol. */ if (! xcoff_mark_symbol (info, h)) - return false; + 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 @@ -2931,94 +2612,337 @@ bfd_xcoff_export_symbol (output_bfd, info, harg, syscall) if ((h->flags & XCOFF_DESCRIPTOR) != 0) { if (! xcoff_mark_symbol (info, h->descriptor)) - return false; + return FALSE; } - return true; + return TRUE; } /* Count a reloc against a symbol. This is called for relocs generated by the linker script, typically for global constructors and destructors. */ -boolean -bfd_xcoff_link_count_reloc (output_bfd, info, name) - bfd *output_bfd; - struct bfd_link_info *info; - const char *name; +bfd_boolean +bfd_xcoff_link_count_reloc (bfd *output_bfd, + struct bfd_link_info *info, + const char *name) { struct xcoff_link_hash_entry *h; - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; + 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)); + bfd_wrapped_link_hash_lookup (output_bfd, info, name, FALSE, FALSE, + FALSE)); if (h == NULL) { - (*_bfd_error_handler) ("%s: no such symbol", name); + (*_bfd_error_handler) (_("%s: no such symbol"), name); bfd_set_error (bfd_error_no_symbols); - return false; + 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 FALSE; - return true; + return TRUE; } /* This function is called for each symbol to which the linker script assigns a value. */ -boolean -bfd_xcoff_record_link_assignment (output_bfd, info, name) - bfd *output_bfd; - struct bfd_link_info *info; - const char *name; +bfd_boolean +bfd_xcoff_record_link_assignment (bfd *output_bfd, + struct bfd_link_info *info, + const char *name) { struct xcoff_link_hash_entry *h; - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; + 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); + h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, TRUE, + FALSE); if (h == NULL) - return false; + return FALSE; h->flags |= XCOFF_DEF_REGULAR; - return true; + return TRUE; } -/* This structure is used to pass information through - xcoff_link_hash_traverse. */ +/* Add a symbol to the .loader symbols, if necessary. */ -struct xcoff_loader_info +static bfd_boolean +xcoff_build_ldsyms (struct xcoff_link_hash_entry *h, void * p) { - /* Set if a problem occurred. */ - boolean failed; - /* Output BFD. */ - bfd *output_bfd; - /* Link information structure. */ - struct bfd_link_info *info; - /* Whether all defined symbols should be exported. */ - boolean export_defineds; - /* 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; -}; + struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; + bfd_size_type amt; + + if (h->root.type == bfd_link_hash_warning) + h = (struct xcoff_link_hash_entry *) h->root.u.i.link; + + /* __rtinit, this symbol has special handling. */ + if (h->flags & XCOFF_RTINIT) + return TRUE; + + /* 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] != '.') + { + 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) + { + bfd *arbfd, *member; + + arbfd = h->root.u.def.section->owner->my_archive; + member = bfd_openr_next_archived_file (arbfd, NULL); + while (member != NULL) + { + if ((member->flags & DYNAMIC) != 0) + { + export = FALSE; + break; + } + member = bfd_openr_next_archived_file (arbfd, member); + } + } + + 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. */ + if (xcoff_hash_table (ldinfo->info)->gc + && (h->flags & XCOFF_MARK) == 0 + && (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->xvec + != ldinfo->info->hash->creator))) + h->flags |= XCOFF_MARK; + + /* 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->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)) + { + asection *sec; + struct xcoff_link_hash_entry *hds; + + sec = xcoff_hash_table (ldinfo->info)->linkage_section; + h->root.type = bfd_link_hash_defined; + h->root.u.def.section = sec; + h->root.u.def.value = sec->size; + h->smclas = XMC_GL; + h->flags |= XCOFF_DEF_REGULAR; + sec->size += bfd_xcoff_glink_code_size(ldinfo->output_bfd); + + /* The global linkage code requires a TOC entry for the + 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_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->u.toc_offset = hds->toc_section->size; + hds->toc_section->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. */ + 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->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->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->size == 0) + { + BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section)); + h->root.u.c.p->section->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 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->root.type == bfd_link_hash_common) + && (h->flags & XCOFF_ENTRY) == 0 + && (h->flags & XCOFF_EXPORT) == 0) + { + h->ldsym = NULL; + return TRUE; + } + + /* We don't need to add this symbol if we did garbage collection and + we did not mark this symbol. */ + if (xcoff_hash_table (ldinfo->info)->gc + && (h->flags & XCOFF_MARK) == 0) + { + h->ldsym = NULL; + return TRUE; + } + + /* We may have already processed this symbol due to the recursive + call above. */ + if ((h->flags & XCOFF_BUILT_LDSYM) != 0) + return TRUE; + + /* We need to add this symbol to the .loader symbols. */ + + BFD_ASSERT (h->ldsym == NULL); + amt = sizeof (struct internal_ldsym); + h->ldsym = bfd_zalloc (ldinfo->output_bfd, amt); + if (h->ldsym == NULL) + { + 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 + data, text and bss sections. */ + h->ldindx = ldinfo->ldsym_count + 3; + + ++ldinfo->ldsym_count; + + if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo, + h->ldsym, h->root.root.string)) + return FALSE; + + h->flags |= XCOFF_BUILT_LDSYM; + 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. @@ -3036,23 +2960,20 @@ struct xcoff_loader_info option). SPECIAL_SECTIONS is set by this routine to csects with magic names like _end. */ -boolean -bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, - file_align, maxstack, maxdata, gc, - modtype, textro, export_defineds, - special_sections) - 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; - int modtype; - boolean textro; - boolean export_defineds; - asection **special_sections; +bfd_boolean +bfd_xcoff_size_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info, + const char *libpath, + const char *entry, + unsigned long file_align, + unsigned long maxstack, + unsigned long maxdata, + bfd_boolean gc, + int modtype, + bfd_boolean textro, + bfd_boolean export_defineds, + asection **special_sections, + bfd_boolean rtld) { struct xcoff_link_hash_entry *hentry; asection *lsec; @@ -3062,20 +2983,21 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, struct xcoff_import_file *fl; struct internal_ldhdr *ldhdr; bfd_size_type stoff; - register char *out; + char *out; asection *sec; bfd *sub; struct bfd_strtab_hash *debug_strtab; bfd_byte *debug_contents = NULL; + bfd_size_type amt; - if (! XCOFF_XVECP (output_bfd->xvec)) + if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour) { - for (i = 0; i < 6; i++) + for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) special_sections[i] = NULL; - return true; + return TRUE; } - ldinfo.failed = false; + ldinfo.failed = FALSE; ldinfo.output_bfd = output_bfd; ldinfo.info = info; ldinfo.export_defineds = export_defineds; @@ -3091,23 +3013,78 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, 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 (* ldsym); + 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. */ + correctly. */ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) { asection *o; @@ -3127,30 +3104,28 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, 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 < 6; i++) + for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++) { - asection *sec; - 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; - } + /* I'm not sure what to do in this bizarre case. */ + return TRUE; xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_build_ldsyms, - (PTR) &ldinfo); + (void *) &ldinfo); if (ldinfo.failed) goto error_return; @@ -3173,14 +3148,14 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, /* 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; stoff = ldhdr->l_impoff + impsize; if (ldinfo.string_size == 0) @@ -3188,17 +3163,24 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, 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 = stoff + ldhdr->l_stlen; - lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size); + lsec->size = stoff + ldhdr->l_stlen; + lsec->contents = bfd_zalloc (output_bfd, lsec->size); if (lsec->contents == NULL) 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; @@ -3208,7 +3190,7 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, *out++ = '\0'; for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next) { - register const char *s; + const char *s; s = fl->path; while ((*out++ = *s++) != '\0') @@ -3241,23 +3223,23 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, /* Allocate space for the magic sections. */ sec = xcoff_hash_table (info)->linkage_section; - if (sec->_raw_size > 0) + if (sec->size > 0) { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); + sec->contents = bfd_zalloc (output_bfd, sec->size); if (sec->contents == NULL) goto error_return; } sec = xcoff_hash_table (info)->toc_section; - if (sec->_raw_size > 0) + if (sec->size > 0) { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); + sec->contents = bfd_zalloc (output_bfd, sec->size); if (sec->contents == NULL) goto error_return; } sec = xcoff_hash_table (info)->descriptor_section; - if (sec->_raw_size > 0) + if (sec->size > 0) { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); + sec->contents = bfd_zalloc (output_bfd, sec->size); if (sec->contents == NULL) goto error_return; } @@ -3278,14 +3260,14 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, if (sub->xvec != info->hash->creator) continue; subdeb = bfd_get_section_by_name (sub, ".debug"); - if (subdeb == NULL || subdeb->_raw_size == 0) + if (subdeb == NULL || subdeb->size == 0) continue; if (info->strip == strip_all || info->strip == strip_debugger || info->discard == discard_all) { - subdeb->_raw_size = 0; + subdeb->size = 0; continue; } @@ -3293,57 +3275,57 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, goto error_return; symcount = obj_raw_syment_count (sub); - debug_index = ((unsigned long *) - bfd_zalloc (sub, symcount * sizeof (unsigned long))); + debug_index = bfd_zalloc (sub, symcount * sizeof (unsigned long)); if (debug_index == NULL) 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 *) bfd_malloc (subdeb->_raw_size); - if (debug_contents == NULL) - goto error_return; - if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents, - (file_ptr) 0, subdeb->_raw_size)) + if (! bfd_malloc_and_get_section (sub, subdeb, &debug_contents)) 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; + + while (esym < esymend) + { + struct internal_syment sym; - bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym); + bfd_coff_swap_sym_in (sub, (void *) esym, (void *) &sym); - *debug_index = (unsigned long) -1; + *debug_index = (unsigned long) -1; - 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; + 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; - 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; - } + 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; + esym += (sym.n_numaux + 1) * symesz; + csectpp += sym.n_numaux + 1; + debug_index += sym.n_numaux + 1; + } } free (debug_contents); @@ -3351,7 +3333,7 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, /* Clear the size of subdeb, so that it is not included directly in the output file. */ - subdeb->_raw_size = 0; + subdeb->size = 0; if (! info->keep_memory) { @@ -3360,2941 +3342,2616 @@ bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, } } - xcoff_hash_table (info)->debug_section->_raw_size = - _bfd_stringtab_size (debug_strtab); + if (info->strip != strip_all) + xcoff_hash_table (info)->debug_section->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; } -/* Add a symbol to the .loader symbols, if necessary. */ - -static boolean -xcoff_build_ldsyms (h, p) - struct xcoff_link_hash_entry *h; - PTR p; +bfd_boolean +bfd_xcoff_link_generate_rtinit (bfd *abfd, + const char *init, + const char *fini, + bfd_boolean rtld) { - struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; - size_t len; + struct bfd_in_memory *bim; - /* 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 - && (h->root.u.def.section->owner->flags & DYNAMIC) == 0) - h->flags |= XCOFF_DEF_REGULAR; + bim = bfd_malloc ((bfd_size_type) sizeof (* bim)); + if (bim == NULL) + return FALSE; - /* 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] != '.') - h->flags |= XCOFF_EXPORT; + bim->size = 0; + bim->buffer = 0; - /* We don't want to garbage collect symbols which are not defined in - XCOFF files. This is a convenient place to mark them. */ - if (xcoff_hash_table (ldinfo->info)->gc - && (h->flags & XCOFF_MARK) == 0 - && (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->xvec - != ldinfo->info->hash->creator))) - h->flags |= XCOFF_MARK; + abfd->link_next = 0; + abfd->format = bfd_object; + abfd->iostream = (void *) bim; + abfd->flags = BFD_IN_MEMORY; + abfd->direction = write_direction; + abfd->where = 0; - /* If this symbol is called and defined in a dynamic object, or not - defined at all when building a shared object, or 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->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 - || ldinfo->info->shared - || ((h->descriptor->flags & XCOFF_IMPORT) != 0 - && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0)) - && (! xcoff_hash_table (ldinfo->info)->gc - || (h->flags & XCOFF_MARK) != 0)) - { - asection *sec; - struct xcoff_link_hash_entry *hds; + if (! bfd_xcoff_generate_rtinit (abfd, init, fini, rtld)) + return FALSE; - sec = xcoff_hash_table (ldinfo->info)->linkage_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_GL; - h->flags |= XCOFF_DEF_REGULAR; - sec->_raw_size += XCOFF_GLINK_SIZE; + /* 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; - /* The global linkage code requires a TOC entry for the - 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_MARK; - if (hds->toc_section == NULL) - { - hds->toc_section = xcoff_hash_table (ldinfo->info)->toc_section; - hds->u.toc_offset = hds->toc_section->_raw_size; - hds->toc_section->_raw_size += 4; - ++xcoff_hash_table (ldinfo->info)->ldrel_count; - ++hds->toc_section->reloc_count; - hds->indx = -2; - hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL; + return TRUE; +} + +/* Link an input file into the linker output file. This function + handles all the sections and relocations of the input file at once. */ - /* We need to call xcoff_build_ldsyms recursively here, - because we may already have passed hds on the traversal. */ - xcoff_build_ldsyms (hds, p); - } - } +static bfd_boolean +xcoff_link_input_bfd (struct xcoff_final_link_info *finfo, + bfd *input_bfd) +{ + bfd *output_bfd; + const char *strings; + bfd_size_type syment_base; + unsigned int n_tmask; + unsigned int n_btshft; + 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; + unsigned int incls; + asection *oline; + bfd_boolean keep_syms; + asection *o; - /* 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; + /* We can just skip DYNAMIC files, unless this is a static link. */ + if ((input_bfd->flags & DYNAMIC) != 0 + && ! finfo->info->static_link) + return TRUE; - /* 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; - sec->_raw_size += 12; + /* Move all the symbols to the output file. */ + output_bfd = finfo->output_bfd; + strings = NULL; + syment_base = obj_raw_syment_count (output_bfd); + isymesz = bfd_coff_symesz (input_bfd); + osymesz = bfd_coff_symesz (output_bfd); + linesz = bfd_coff_linesz (input_bfd); + BFD_ASSERT (linesz == bfd_coff_linesz (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; + n_tmask = coff_data (input_bfd)->local_n_tmask; + n_btshft = coff_data (input_bfd)->local_n_btshft; - /* 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; - } - } + /* Define macros so that ISFCN, et. al., macros work correctly. */ +#define N_TMASK n_tmask +#define N_BTSHFT n_btshft - /* 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; - } + copy = FALSE; + if (! finfo->info->keep_memory) + copy = TRUE; + hash = TRUE; + if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) + hash = FALSE; - /* 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 common, or if it is the entry point, or if it is - being exported. */ + if (! _bfd_coff_get_external_symbols (input_bfd)) + return FALSE; - if (((h->flags & XCOFF_LDREL) == 0 - || h->root.type == bfd_link_hash_defined - || 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; - } + esym = (bfd_byte *) obj_coff_external_syms (input_bfd); + esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; + sym_hash = obj_xcoff_sym_hashes (input_bfd); + csectpp = xcoff_data (input_bfd)->csects; + debug_index = xcoff_data (input_bfd)->debug_indices; + isymp = finfo->internal_syms; + indexp = finfo->sym_indices; + output_index = syment_base; + outsym = finfo->outsyms; + incls = 0; + oline = NULL; - /* We don't need to add this symbol if we did garbage collection and - we did not mark this symbol. */ - if (xcoff_hash_table (ldinfo->info)->gc - && (h->flags & XCOFF_MARK) == 0) + while (esym < esym_end) { - h->ldsym = NULL; - return true; - } - - /* We may have already processed this symbol due to the recursive - call above. */ - if ((h->flags & XCOFF_BUILT_LDSYM) != 0) - return true; + struct internal_syment isym; + union internal_auxent aux; + int smtyp = 0; + bfd_boolean skip; + bfd_boolean require; + int add; - /* We need to add this symbol to the .loader symbols. */ + bfd_coff_swap_sym_in (input_bfd, (void *) esym, (void *) isymp); - /* h->ldsym will already have been allocated for an explicitly - imported symbol. */ - if (h->ldsym == NULL) - { - h->ldsym = ((struct internal_ldsym *) - bfd_zalloc (ldinfo->output_bfd, - sizeof (struct internal_ldsym))); - if (h->ldsym == NULL) + /* If this is a C_EXT or C_HIDEXT symbol, we need the csect + information. */ + if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT) { - ldinfo->failed = true; - return false; - } - } + BFD_ASSERT (isymp->n_numaux > 0); + bfd_coff_swap_aux_in (input_bfd, + (void *) (esym + isymesz * isymp->n_numaux), + isymp->n_type, isymp->n_sclass, + isymp->n_numaux - 1, isymp->n_numaux, + (void *) &aux); - /* The first 3 symbol table indices are reserved to indicate the - sections. */ - h->ldindx = ldinfo->ldsym_count + 3; + smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); + } - ++ldinfo->ldsym_count; + /* Make a copy of *isymp so that the relocate_section function + always sees the original values. This is more reliable than + always recomputing the symbol value even if we are stripping + the symbol. */ + isym = *isymp; - len = strlen (h->root.root.string); - if (len <= SYMNMLEN) - strncpy (h->ldsym->_l._l_name, h->root.root.string, SYMNMLEN); - else - { - if (ldinfo->string_size + len + 3 > ldinfo->string_alc) + /* 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. */ + if (isym.n_sclass == C_EXT + && *sym_hash != NULL + && (*sym_hash)->ldsym != NULL + && (smtyp != XTY_ER + || (*sym_hash)->root.type == bfd_link_hash_undefined)) { - 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; - - newstrings = ((bfd_byte *) - bfd_realloc ((PTR) ldinfo->strings, newalc)); - if (newstrings == NULL) + struct xcoff_link_hash_entry *h; + struct internal_ldsym *ldsym; + + h = *sym_hash; + ldsym = h->ldsym; + if (isym.n_scnum > 0) { - ldinfo->failed = true; - return false; + ldsym->l_scnum = (*csectpp)->output_section->target_index; + ldsym->l_value = (isym.n_value + + (*csectpp)->output_section->vma + + (*csectpp)->output_offset + - (*csectpp)->vma); + } + else + { + ldsym->l_scnum = isym.n_scnum; + ldsym->l_value = isym.n_value; } - 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; - } - - h->flags |= XCOFF_BUILT_LDSYM; - return true; -} - -/* Do the final link step. */ + ldsym->l_smtype = smtyp; + if (((h->flags & XCOFF_DEF_REGULAR) == 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_DEF_DYNAMIC) != 0) + || (h->flags & XCOFF_EXPORT) != 0) + ldsym->l_smtype |= L_EXPORT; + if ((h->flags & XCOFF_ENTRY) != 0) + ldsym->l_smtype |= L_ENTRY; -boolean -_bfd_xcoff_bfd_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - bfd_size_type symesz; - 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; - file_ptr rel_filepos; - unsigned int relsz; - file_ptr line_filepos; - unsigned int linesz; - bfd *sub; - bfd_byte *external_relocs = NULL; - char strbuf[STRING_SIZE_SIZE]; + ldsym->l_smclas = aux.x_csect.x_smclas; - if (info->shared) - abfd->flags |= DYNAMIC; + 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; + else + { + bfd *impbfd; - symesz = bfd_coff_symesz (abfd); - - finfo.info = info; - finfo.output_bfd = abfd; - finfo.strtab = NULL; - finfo.section_info = NULL; - finfo.last_file_index = -1; - finfo.toc_symindx = -1; - finfo.internal_syms = NULL; - finfo.sym_indices = NULL; - finfo.outsyms = NULL; - finfo.linenos = NULL; - finfo.contents = NULL; - finfo.external_relocs = NULL; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + impbfd = h->root.u.def.section->owner; + else if (h->root.type == bfd_link_hash_undefined + || h->root.type == bfd_link_hash_undefweak) + impbfd = h->root.u.undef.abfd; + else + impbfd = 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)); + if (impbfd == NULL) + ldsym->l_ifile = 0; + else + { + BFD_ASSERT (impbfd->xvec == finfo->output_bfd->xvec); + ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; + } + } + } - xcoff_data (abfd)->coff.link_info = info; + ldsym->l_parm = 0; - finfo.strtab = _bfd_stringtab_init (); - if (finfo.strtab == NULL) - goto error_return; + BFD_ASSERT (h->ldindx >= 0); + bfd_xcoff_swap_ldsym_out (finfo->output_bfd, ldsym, + (finfo->ldsym + + ((h->ldindx - 3) + * bfd_xcoff_ldsymsz (finfo->output_bfd)))); + h->ldsym = NULL; - /* 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) + /* 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)) { - asection *sec; - - sec = p->u.indirect.section; + xcoff_data (output_bfd)->snentry = + h->root.u.def.section->output_section->target_index; + } + } - /* 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; + *indexp = -1; - if (info->strip == strip_none - || info->strip == strip_some) - o->lineno_count += sec->lineno_count; + skip = FALSE; + require = FALSE; + add = 1 + isym.n_numaux; - o->reloc_count += sec->reloc_count; + /* If we are skipping this csect, we want to skip this symbol. */ + if (*csectpp == NULL) + skip = TRUE; - 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; - } - } + /* If we garbage collected this csect, we want to skip this + symbol. */ + if (! skip + && xcoff_hash_table (finfo->info)->gc + && ((*csectpp)->flags & SEC_MARK) == 0 + && *csectpp != bfd_abs_section_ptr) + skip = TRUE; - /* Compute the file positions for all the sections. */ - if (abfd->output_has_begun) - { - if (xcoff_hash_table (info)->file_align != 0) - abort (); - } - else - { - bfd_vma file_align; + /* An XCOFF linker always skips C_STAT symbols. */ + if (! skip + && isymp->n_sclass == C_STAT) + skip = TRUE; - file_align = xcoff_hash_table (info)->file_align; - if (file_align != 0) + /* We skip all but the first TOC anchor. */ + if (! skip + && isymp->n_sclass == C_HIDEXT + && aux.x_csect.x_smclas == XMC_TC0) { - 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; - for (op = &abfd->sections; *op != NULL; op = &(*op)->next) + if (finfo->toc_symindx != -1) + skip = TRUE; + else { - (*op)->target_index = indx; - if (strcmp ((*op)->name, ".pad") == 0) - saw_contents = false; - else if (((*op)->flags & SEC_HAS_CONTENTS) != 0 - && ((*op)->flags & SEC_LOAD) != 0) + 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->size); + for (inp = finfo->info->input_bfds; + inp != NULL; + inp = inp->link_next) { - if (! saw_contents) - saw_contents = true; - else - { - asection *n, *hold; - - hold = *op; - *op = NULL; - 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; - } - } - } - /* Reset the section indices after inserting the new - sections. */ - indx = 0; - for (o = abfd->sections; o != NULL; o = o->next) - { - ++indx; - o->target_index = indx; - } - BFD_ASSERT ((unsigned int) indx == abfd->section_count); + 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->size); + if (new_toc_end > tocend) + tocend = new_toc_end; + } - /* 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. */ - sofar = bfd_coff_filhsz (abfd); - sofar += bfd_coff_aoutsz (abfd); - sofar += abfd->section_count * bfd_coff_scnhsz (abfd); - for (o = abfd->sections; o != NULL; o = o->next) - if (o->reloc_count >= 0xffff || o->lineno_count >= 0xffff) - sofar += bfd_coff_scnhsz (abfd); + } - for (o = abfd->sections; o != NULL; o = o->next) - { - if (strcmp (o->name, ".pad") == 0) + if (tocval + 0x10000 < tocend) { - bfd_vma pageoff; - - BFD_ASSERT (o->_raw_size == 0); - pageoff = sofar & (file_align - 1); - if (pageoff != 0) - { - o->_raw_size = file_align - pageoff; - sofar += file_align - pageoff; - o->flags |= SEC_HAS_CONTENTS; - } + (*_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; } - else + + if (tocval + 0x8000 < tocend) { - if ((o->flags & SEC_HAS_CONTENTS) != 0) - sofar += BFD_ALIGN (o->_raw_size, - 1 << o->alignment_power); + bfd_vma tocadd; + + tocadd = tocend - (tocval + 0x8000); + tocval += tocadd; + isym.n_value += tocadd; } + + finfo->toc_symindx = output_index; + xcoff_data (finfo->output_bfd)->toc = tocval; + xcoff_data (finfo->output_bfd)->sntoc = + (*csectpp)->output_section->target_index; + require = TRUE; + } } - bfd_coff_compute_section_file_positions (abfd); - } + /* If we are stripping all symbols, we want to skip this one. */ + if (! skip + && finfo->info->strip == strip_all) + skip = TRUE; - /* Allocate space for the pointers we need to keep for the relocs. */ - { - unsigned int i; + /* 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; - /* 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 *) - bfd_malloc ((abfd->section_count + 1) - * sizeof (struct xcoff_link_section_info))); - if (finfo.section_info == NULL) - 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 can skip common symbols if they got defined somewhere + else. */ + if (! skip + && isym.n_sclass == C_EXT + && smtyp == XTY_CM + && ((*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; - /* 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->reloc_count == 0) - o->rel_filepos = 0; - else + /* Skip local symbols if we are discarding them. */ + if (! skip + && finfo->info->discard == discard_all + && isym.n_sclass != C_EXT + && (isym.n_sclass != C_HIDEXT + || smtyp != XTY_SD)) + skip = TRUE; + + /* If we stripping debugging symbols, and this is a debugging + symbol, then skip it. */ + if (! skip + && finfo->info->strip == strip_debugger + && isym.n_scnum == N_DEBUG) + 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 + this correctly for symbols whose names are in the .debug + section; to get it right we would need a new bfd_strtab_hash + function to return the string given the index. */ + if (! skip + && (finfo->info->strip == strip_some + || finfo->info->discard == discard_l) + && (debug_index == NULL || *debug_index == (unsigned long) -1)) { - o->flags |= SEC_RELOC; - o->rel_filepos = rel_filepos; - rel_filepos += o->reloc_count * relsz; + const char *name; + char buf[SYMNMLEN + 1]; - /* 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. + name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); - 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. */ - finfo.section_info[o->target_index].relocs = - ((struct internal_reloc *) - bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); - finfo.section_info[o->target_index].rel_hashes = - ((struct xcoff_link_hash_entry **) - bfd_malloc (o->reloc_count - * sizeof (struct xcoff_link_hash_entry *))); - if (finfo.section_info[o->target_index].relocs == NULL - || finfo.section_info[o->target_index].rel_hashes == NULL) - goto error_return; + if (name == NULL) + return FALSE; - if (o->reloc_count > max_output_reloc_count) - max_output_reloc_count = o->reloc_count; - } - } - - /* 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; + if ((finfo->info->strip == strip_some + && (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)) + && bfd_is_local_label_name (input_bfd, name))) + skip = TRUE; } - /* 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; - } + /* We can not skip the first TOC anchor. */ + if (skip + && require + && finfo->info->strip != strip_all) + skip = FALSE; - obj_sym_filepos (abfd) = line_filepos; + /* We now know whether we are to skip this symbol or not. */ + if (! skip) + { + /* Adjust the symbol in order to output it. */ - /* 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; + if (isym._n._n_n._n_zeroes == 0 + && isym._n._n_n._n_offset != 0) + { + /* This symbol has a long name. Enter it in the string + table we are building. If *debug_index != -1, the + name has already been entered in the .debug section. */ + if (debug_index != NULL && *debug_index != (unsigned long) -1) + isym._n._n_n._n_offset = *debug_index; + else + { + const char *name; + bfd_size_type indx; - sub->output_has_begun = false; - sz = obj_raw_syment_count (sub); - if (sz > max_sym_count) - max_sym_count = sz; - } + name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL); - /* Allocate some buffers used while linking. */ - finfo.internal_syms = ((struct internal_syment *) - bfd_malloc (max_sym_count - * sizeof (struct internal_syment))); - finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); - finfo.outsyms = ((bfd_byte *) - bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); - finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count - * bfd_coff_linesz (abfd)); - finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); - finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); - 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)) - goto error_return; + if (name == NULL) + return FALSE; + indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); + if (indx == (bfd_size_type) -1) + return FALSE; + isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; + } + } - obj_raw_syment_count (abfd) = 0; - xcoff_data (abfd)->toc = (bfd_vma) -1; + 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 + + (*csectpp)->output_offset + - (*csectpp)->vma); + } - /* We now know the position of everything in the file, except that - we don't know the size of the symbol table and therefore we don't - know where the string table starts. We just build the string - table in memory as we go along. We process all the relocations - for a single input file at once. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order - && p->u.indirect.section->owner->xvec == abfd->xvec) + /* The value of a C_FILE symbol is the symbol index of the + next C_FILE symbol. The value of the last C_FILE symbol + is -1. We try to get this right, below, just before we + write the symbols out, but in the general case we may + have to write the symbol out twice. */ + if (isym.n_sclass == C_FILE) { - sub = p->u.indirect.section->owner; - if (! sub->output_has_begun) + if (finfo->last_file_index != -1 + && finfo->last_file.n_value != (bfd_vma) output_index) { - if (! xcoff_link_input_bfd (&finfo, sub)) - goto error_return; - sub->output_has_begun = true; + /* We must correct the value of the last C_FILE entry. */ + finfo->last_file.n_value = output_index; + if ((bfd_size_type) finfo->last_file_index >= syment_base) + { + /* The last C_FILE symbol is in this input file. */ + bfd_coff_swap_sym_out (output_bfd, + (void *) &finfo->last_file, + (void *) (finfo->outsyms + + ((finfo->last_file_index + - syment_base) + * osymesz))); + } + else + { + /* 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, + (void *) &finfo->last_file, + (void *) outsym); + + 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; + } } + + finfo->last_file_index = output_index; + finfo->last_file = isym; } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - if (! xcoff_reloc_link_order (abfd, &finfo, o, p)) - goto error_return; - } - else + + /* 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) { - if (! _bfd_default_link_order (abfd, info, o, p)) - goto error_return; + isym.n_value = finfo->line_filepos; + ++incls; } - } - } - /* Free up the buffers used by xcoff_link_input_bfd. */ + /* Output the symbol. */ - if (finfo.internal_syms != NULL) - { - free (finfo.internal_syms); - finfo.internal_syms = NULL; - } - if (finfo.sym_indices != NULL) - { - free (finfo.sym_indices); - finfo.sym_indices = NULL; - } - if (finfo.linenos != NULL) - { - free (finfo.linenos); - finfo.linenos = NULL; - } - if (finfo.contents != NULL) - { - free (finfo.contents); - finfo.contents = NULL; - } - if (finfo.external_relocs != NULL) - { - free (finfo.external_relocs); - finfo.external_relocs = NULL; - } + bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); - /* The value of the last C_FILE symbol is supposed to be -1. Write - it out again. */ - if (finfo.last_file_index != -1) - { - finfo.last_file.n_value = -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) - goto error_return; - } + *indexp = output_index; - /* Write out all the global symbols which do not come from XCOFF - input files. */ - xcoff_link_hash_traverse (xcoff_hash_table (info), - xcoff_write_global_symbol, - (PTR) &finfo); + if (isym.n_sclass == C_EXT) + { + long indx; + struct xcoff_link_hash_entry *h; - if (finfo.outsyms != NULL) - { - free (finfo.outsyms); - finfo.outsyms = NULL; - } + indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) + / isymesz); + h = obj_xcoff_sym_hashes (input_bfd)[indx]; + BFD_ASSERT (h != NULL); + h->indx = output_index; + } - /* 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); - if (external_relocs == NULL && max_output_reloc_count != 0) - { - bfd_set_error (bfd_error_no_memory); - goto error_return; + /* 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; + } + + esym += add * isymesz; + isymp += add; + csectpp += add; + sym_hash += add; + if (debug_index != NULL) + debug_index += add; + ++indexp; + for (--add; add > 0; --add) + *indexp++ = -1; } - for (o = abfd->sections; o != NULL; o = o->next) + /* 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; + isymp = finfo->internal_syms; + indexp = finfo->sym_indices; + csectpp = xcoff_data (input_bfd)->csects; + outsym = finfo->outsyms; + while (esym < esym_end) { - 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; + int add; - if (o->reloc_count == 0) - continue; + add = 1 + isymp->n_numaux; - irel = finfo.section_info[o->target_index].relocs; - irelend = irel + o->reloc_count; - rel_hash = finfo.section_info[o->target_index].rel_hashes; - for (; irel < irelend; irel++, rel_hash++, erel += relsz) + if (*indexp < 0) + esym += add * isymesz; + else { - if (*rel_hash != NULL) + int i; + + if (isymp->n_sclass == C_BSTAT) { - if ((*rel_hash)->indx < 0) - { - if (! ((*info->callbacks->unattached_reloc) - (info, (*rel_hash)->root.root.string, - (bfd *) NULL, o, irel->r_vaddr))) - goto error_return; - (*rel_hash)->indx = 0; - } - irel->r_symndx = (*rel_hash)->indx; - } - } + struct internal_syment isym; - 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; + 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, (void *) outsym, (void *) &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, (void *) &isym, + (void *) outsym); + } } - 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. */ - qsort ((PTR) finfo.section_info[o->target_index].relocs, - o->reloc_count, sizeof (struct internal_reloc), - xcoff_sort_relocs); + esym += isymesz; + outsym += osymesz; - irel = finfo.section_info[o->target_index].relocs; - irelend = irel + o->reloc_count; - erel = external_relocs; - for (; irel < irelend; irel++, rel_hash++, erel += relsz) - bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); + for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) + { + union internal_auxent aux; - if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 - || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, - abfd) != relsz * o->reloc_count) - goto error_return; - } + bfd_coff_swap_aux_in (input_bfd, (void *) esym, isymp->n_type, + isymp->n_sclass, i, isymp->n_numaux, + (void *) &aux); - if (external_relocs != NULL) - { - free (external_relocs); - external_relocs = NULL; - } + if (isymp->n_sclass == C_FILE) + { + /* This is the file name (or some comment put in by + the compiler). If it is long, we must put it in + the string table. */ + if (aux.x_file.x_n.x_zeroes == 0 + && aux.x_file.x_n.x_offset != 0) + { + const char *filename; + bfd_size_type indx; - /* Free up the section information. */ - if (finfo.section_info != NULL) - { - unsigned int i; + BFD_ASSERT (aux.x_file.x_n.x_offset + >= STRING_SIZE_SIZE); + if (strings == NULL) + { + strings = _bfd_coff_read_string_table (input_bfd); + if (strings == NULL) + 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; + aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; + } + } + else if ((isymp->n_sclass == C_EXT + || isymp->n_sclass == C_HIDEXT) + && i + 1 == isymp->n_numaux) + { - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - finfo.section_info = NULL; - } + /* We don't support type checking. I don't know if + 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. */ + aux.x_csect.x_stab = 0; + aux.x_csect.x_snstab = 0; - /* Write out the loader section contents. */ - BFD_ASSERT ((bfd_byte *) finfo.ldrel - == (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)) - goto error_return; + if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD) + { + unsigned long indx; - /* 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)) - 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)) - 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, - o->output_offset, o->_raw_size)) - goto error_return; + indx = aux.x_csect.x_scnlen.l; + if (indx < obj_raw_syment_count (input_bfd)) + { + long symindx; - /* Write out the string table. */ - if (bfd_seek (abfd, - (obj_sym_filepos (abfd) - + obj_raw_syment_count (abfd) * symesz), - 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) - goto error_return; - if (! _bfd_stringtab_emit (abfd, finfo.strtab)) - goto error_return; + symindx = finfo->sym_indices[indx]; + if (symindx < 0) + { + aux.x_csect.x_scnlen.l = 0; + } + else + { + aux.x_csect.x_scnlen.l = symindx; + } + } + } + } + else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) + { + unsigned long indx; - _bfd_stringtab_free (finfo.strtab); + if (ISFCN (isymp->n_type) + || ISTAG (isymp->n_sclass) + || 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. */ + while (finfo->sym_indices[indx] < 0 + && indx < obj_raw_syment_count (input_bfd)) + ++indx; + if (indx >= obj_raw_syment_count (input_bfd)) + indx = output_index; + else + indx = finfo->sym_indices[indx]; + aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx; - /* Write out the debugging string table. */ - o = xcoff_hash_table (info)->debug_section; - if (o != NULL) - { - struct bfd_strtab_hash *debug_strtab; + } + } - 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) - goto error_return; - if (! _bfd_stringtab_emit (abfd, debug_strtab)) - goto error_return; - } + indx = aux.x_sym.x_tagndx.l; + if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) + { + long symindx; - /* Setting bfd_get_symcount to 0 will cause write_object_contents to - not try to write out the symbols. */ - bfd_get_symcount (abfd) = 0; + symindx = finfo->sym_indices[indx]; + if (symindx < 0) + aux.x_sym.x_tagndx.l = 0; + else + aux.x_sym.x_tagndx.l = symindx; + } - return true; + } - error_return: - if (finfo.strtab != NULL) - _bfd_stringtab_free (finfo.strtab); - if (finfo.section_info != NULL) - { - unsigned int i; + /* Copy over the line numbers, unless we are stripping + them. We do this on a symbol by symbol basis in + order to more easily handle garbage collection. */ + if ((isymp->n_sclass == C_EXT + || isymp->n_sclass == C_HIDEXT) + && i == 0 + && isymp->n_numaux > 1 + && ISFCN (isymp->n_type) + && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) + { + if (finfo->info->strip != strip_none + && finfo->info->strip != strip_some) + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; + else + { + asection *enclosing; + unsigned int enc_count; + bfd_signed_vma linoff; + struct internal_lineno lin; - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - } - if (finfo.internal_syms != NULL) - free (finfo.internal_syms); - if (finfo.sym_indices != NULL) - free (finfo.sym_indices); - if (finfo.outsyms != NULL) - free (finfo.outsyms); - if (finfo.linenos != NULL) - free (finfo.linenos); - if (finfo.contents != NULL) - free (finfo.contents); - if (finfo.external_relocs != NULL) - free (finfo.external_relocs); - if (external_relocs != NULL) - free (external_relocs); - return false; -} + 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; + } -/* Link an input file into the linker output file. This function - handles all the sections and relocations of the input file at once. */ + linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr + - enclosing->line_filepos); -static boolean -xcoff_link_input_bfd (finfo, input_bfd) - struct xcoff_final_link_info *finfo; - bfd *input_bfd; -{ - bfd *output_bfd; - const char *strings; - bfd_size_type syment_base; - unsigned int n_tmask; - unsigned int n_btshft; - 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; - unsigned int incls; - asection *oline; - boolean keep_syms; - asection *o; + bfd_coff_swap_lineno_in (input_bfd, + (void *) (finfo->linenos + linoff), + (void *) &lin); + if (lin.l_lnno != 0 + || ((bfd_size_type) lin.l_addr.l_symndx + != ((esym + - isymesz + - ((bfd_byte *) + obj_coff_external_syms (input_bfd))) + / isymesz))) + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; + else + { + bfd_byte *linpend, *linp; + bfd_vma offset; + bfd_size_type count; - /* We can just skip DYNAMIC files, unless this is a static link. */ - if ((input_bfd->flags & DYNAMIC) != 0 - && ! finfo->info->static_link) - return true; + lin.l_addr.l_symndx = *indexp; + bfd_coff_swap_lineno_out (output_bfd, (void *) &lin, + (void *) (finfo->linenos + + linoff)); - /* Move all the symbols to the output file. */ + linpend = (finfo->linenos + + enc_count * linesz); + offset = (o->output_section->vma + + o->output_offset + - o->vma); + for (linp = finfo->linenos + linoff + linesz; + linp < linpend; + linp += linesz) + { + bfd_coff_swap_lineno_in (input_bfd, (void *) linp, + (void *) &lin); + if (lin.l_lnno == 0) + break; + lin.l_addr.l_paddr += offset; + bfd_coff_swap_lineno_out (output_bfd, + (void *) &lin, + (void *) linp); + } - output_bfd = finfo->output_bfd; - strings = NULL; - syment_base = obj_raw_syment_count (output_bfd); - isymesz = bfd_coff_symesz (input_bfd); - osymesz = bfd_coff_symesz (output_bfd); - linesz = bfd_coff_linesz (input_bfd); - BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); + count = (linp - (finfo->linenos + linoff)) / linesz; - n_tmask = coff_data (input_bfd)->local_n_tmask; - n_btshft = coff_data (input_bfd)->local_n_btshft; + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = + (o->output_section->line_filepos + + o->output_section->lineno_count * linesz); - /* Define macros so that ISFCN, et. al., macros work correctly. */ -#define N_TMASK n_tmask -#define N_BTSHFT n_btshft + if (bfd_seek (output_bfd, + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr, + SEEK_SET) != 0 + || (bfd_bwrite (finfo->linenos + linoff, + linesz * count, output_bfd) + != linesz * count)) + return FALSE; - copy = false; - if (! finfo->info->keep_memory) - copy = true; - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; + o->output_section->lineno_count += count; - if (! _bfd_coff_get_external_symbols (input_bfd)) - return false; + if (incls > 0) + { + struct internal_syment *iisp, *iispend; + long *iindp; + bfd_byte *oos; + int iiadd; - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - sym_hash = obj_xcoff_sym_hashes (input_bfd); - csectpp = xcoff_data (input_bfd)->csects; - debug_index = xcoff_data (input_bfd)->debug_indices; - isymp = finfo->internal_syms; - indexp = finfo->sym_indices; - output_index = syment_base; - outsym = finfo->outsyms; - incls = 0; - oline = NULL; + /* 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; - while (esym < esym_end) - { - struct internal_syment isym; - union internal_auxent aux; - int smtyp = 0; - boolean skip; - boolean require; - int add; + bfd_coff_swap_sym_in (output_bfd, + (void *) oos, + (void *) &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, + (void *) &iis, + (void *) oos); + --incls; + } - bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); + iiadd = 1 + iisp->n_numaux; + if (*iindp >= 0) + oos += iiadd * osymesz; + iisp += iiadd; + iindp += iiadd; + } + } + } + } + } - /* If this is a C_EXT or C_HIDEXT symbol, we need the csect - information. */ - if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT) - { - BFD_ASSERT (isymp->n_numaux > 0); - bfd_coff_swap_aux_in (input_bfd, - (PTR) (esym + isymesz * isymp->n_numaux), - isymp->n_type, isymp->n_sclass, - isymp->n_numaux - 1, isymp->n_numaux, - (PTR) &aux); - smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); + bfd_coff_swap_aux_out (output_bfd, (void *) &aux, isymp->n_type, + isymp->n_sclass, i, isymp->n_numaux, + (void *) outsym); + outsym += osymesz; + esym += isymesz; + } } - /* Make a copy of *isymp so that the relocate_section function - always sees the original values. This is more reliable than - always recomputing the symbol value even if we are stripping - the symbol. */ - isym = *isymp; + indexp += add; + isymp += add; + csectpp += add; + } - /* 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. */ - if (isym.n_sclass == C_EXT - && *sym_hash != NULL - && (*sym_hash)->ldsym != NULL - && (smtyp != XTY_ER - || (*sym_hash)->root.type == bfd_link_hash_undefined)) - { - struct xcoff_link_hash_entry *h; - struct internal_ldsym *ldsym; + /* If we swapped out a C_FILE symbol, guess that the next C_FILE + symbol will be the first symbol in the next input file. In the + normal case, this will save us from writing out the C_FILE symbol + again. */ + if (finfo->last_file_index != -1 + && (bfd_size_type) finfo->last_file_index >= syment_base) + { + finfo->last_file.n_value = output_index; + bfd_coff_swap_sym_out (output_bfd, (void *) &finfo->last_file, + (void *) (finfo->outsyms + + ((finfo->last_file_index - syment_base) + * osymesz))); + } - h = *sym_hash; - ldsym = h->ldsym; - if (isym.n_scnum > 0) - { - ldsym->l_scnum = (*csectpp)->output_section->target_index; - ldsym->l_value = (isym.n_value - + (*csectpp)->output_section->vma - + (*csectpp)->output_offset - - (*csectpp)->vma); - } - else - { - ldsym->l_scnum = isym.n_scnum; - ldsym->l_value = isym.n_value; - } + /* Write the modified symbols to the output file. */ + if (outsym > finfo->outsyms) + { + 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; - ldsym->l_smtype = smtyp; - if (((h->flags & XCOFF_DEF_REGULAR) == 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_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_EXPORT) != 0) - ldsym->l_smtype |= L_EXPORT; - if ((h->flags & XCOFF_ENTRY) != 0) - ldsym->l_smtype |= L_ENTRY; + BFD_ASSERT ((obj_raw_syment_count (output_bfd) + + (outsym - finfo->outsyms) / osymesz) + == output_index); - ldsym->l_smclas = aux.x_csect.x_smclas; + obj_raw_syment_count (output_bfd) = output_index; + } - 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; - else - { - bfd *impbfd; + /* 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; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - impbfd = h->root.u.def.section->owner; - else if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - impbfd = h->root.u.undef.abfd; - else - impbfd = NULL; + /* Relocate the contents of each section. */ + for (o = input_bfd->sections; o != NULL; o = o->next) + { + bfd_byte *contents; - if (impbfd == NULL) - ldsym->l_ifile = 0; - else - { - BFD_ASSERT (impbfd->xvec == finfo->output_bfd->xvec); - ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; - } - } - } + if (! o->linker_mark) + /* This section was omitted from the link. */ + continue; - ldsym->l_parm = 0; + if ((o->flags & SEC_HAS_CONTENTS) == 0 + || o->size == 0 + || (o->flags & SEC_IN_MEMORY) != 0) + continue; - 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); - h->ldsym = NULL; + /* We have set filepos correctly for the sections we created to + 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 + { + bfd_size_type sz = o->rawsize ? o->rawsize : o->size; + if (!bfd_get_section_contents (input_bfd, o, finfo->contents, 0, sz)) + return FALSE; + contents = finfo->contents; + } - /* 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; - add = 1 + isym.n_numaux; - - /* If we are skipping this csect, we want to skip this symbol. */ - if (*csectpp == NULL) - skip = true; + if ((o->flags & SEC_RELOC) != 0) + { + int target_index; + struct internal_reloc *internal_relocs; + struct internal_reloc *irel; + bfd_vma offset; + struct internal_reloc *irelend; + struct xcoff_link_hash_entry **rel_hash; + long r_symndx; - /* If we garbage collected this csect, we want to skip this - symbol. */ - if (! skip - && xcoff_hash_table (finfo->info)->gc - && ((*csectpp)->flags & SEC_MARK) == 0 - && *csectpp != bfd_abs_section_ptr) - skip = true; + /* 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, + (finfo->section_info[target_index].relocs + + o->output_section->reloc_count))); + if (internal_relocs == NULL) + return FALSE; - /* An XCOFF linker always skips C_STAT symbols. */ - if (! skip - && isymp->n_sclass == C_STAT) - skip = true; + /* Call processor specific code to relocate the section + 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; - /* We skip all but the first TOC anchor. */ - if (! skip - && isymp->n_sclass == C_HIDEXT - && aux.x_csect.x_smclas == XMC_TC0) - { - if (finfo->toc_symindx != -1) - skip = true; - else + offset = o->output_section->vma + o->output_offset - o->vma; + irel = internal_relocs; + irelend = irel + o->reloc_count; + rel_hash = (finfo->section_info[target_index].rel_hashes + + o->output_section->reloc_count); + for (; irel < irelend; irel++, rel_hash++) { - bfd_vma tocval, tocend; + struct xcoff_link_hash_entry *h = NULL; + struct internal_ldrel ldrel; + bfd_boolean quiet; - 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. */ + *rel_hash = NULL; - tocend = ((*csectpp)->output_section->vma - + (*csectpp)->output_section->_raw_size); + /* Adjust the reloc address and symbol index. */ - 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; - } + irel->r_vaddr += offset; - if (tocval + 0x8000 < tocend) - { - bfd_vma tocadd; + r_symndx = irel->r_symndx; - tocadd = tocend - (tocval + 0x8000); - tocval += tocadd; - isym.n_value += tocadd; - } + if (r_symndx == -1) + h = NULL; + else + h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; - finfo->toc_symindx = output_index; - xcoff_data (finfo->output_bfd)->toc = tocval; - xcoff_data (finfo->output_bfd)->sntoc = - (*csectpp)->output_section->target_index; - require = true; - } - } + if (r_symndx != -1 && finfo->info->strip != strip_all) + { + 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; - /* If we are stripping all symbols, we want to skip this one. */ - if (! skip - && finfo->info->strip == strip_all) - skip = true; + amt = sizeof (* n); + n = 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 = h->indx; + else + { + /* This symbol is being written at the end + of the file, and we do not yet know the + symbol index. We save the pointer to the + hash table entry in the rel_hash list. + We set the indx field to -2 to indicate + that this symbol must not be stripped. */ + *rel_hash = h; + h->indx = -2; + } + } + else + { + long indx; - /* 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; + indx = finfo->sym_indices[r_symndx]; - /* We can skip common symbols if they got defined somewhere - else. */ - if (! skip - && isym.n_sclass == C_EXT - && smtyp == XTY_CM - && ((*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; + if (indx == -1) + { + struct internal_syment *is; - /* Skip local symbols if we are discarding them. */ - if (! skip - && finfo->info->discard == discard_all - && isym.n_sclass != C_EXT - && (isym.n_sclass != C_HIDEXT - || smtyp != XTY_SD)) - skip = true; + /* Relocations against a TC0 TOC anchor are + automatically transformed to be against + the TOC anchor in the output file. */ + is = finfo->internal_syms + r_symndx; + if (is->n_sclass == C_HIDEXT + && is->n_numaux > 0) + { + void * auxptr; + union internal_auxent aux; - /* If we stripping debugging symbols, and this is a debugging - symbol, then skip it. */ - if (! skip - && finfo->info->strip == strip_debugger - && isym.n_scnum == N_DEBUG) - skip = true; + auxptr = ((void *) + (((bfd_byte *) + obj_coff_external_syms (input_bfd)) + + ((r_symndx + is->n_numaux) + * isymesz))); + bfd_coff_swap_aux_in (input_bfd, auxptr, + is->n_type, is->n_sclass, + is->n_numaux - 1, + is->n_numaux, + (void *) &aux); + if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD + && aux.x_csect.x_smclas == XMC_TC0) + indx = finfo->toc_symindx; + } + } - /* If some symbols are stripped based on the name, work out the - name and decide whether to skip this symbol. We don't handle - this correctly for symbols whose names are in the .debug - section; to get it right we would need a new bfd_strtab_hash - function to return the string given the index. */ - if (! skip - && (finfo->info->strip == strip_some - || finfo->info->discard == discard_l) - && (debug_index == NULL || *debug_index == (unsigned long) -1)) - { - const char *name; - char buf[SYMNMLEN + 1]; + if (indx != -1) + irel->r_symndx = indx; + else + { - name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); - if (name == NULL) - return false; + struct internal_syment *is; - if ((finfo->info->strip == strip_some - && (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; - } + const char *name; + char buf[SYMNMLEN + 1]; - /* We can not skip the first TOC anchor. */ - if (skip - && require - && finfo->info->strip != strip_all) - skip = false; + /* This reloc is against a symbol we are + stripping. It would be possible to handle + this case, but I don't think it's worth it. */ + is = finfo->internal_syms + r_symndx; - /* We now know whether we are to skip this symbol or not. */ - if (! skip) - { - /* Adjust the symbol in order to output it. */ + name = (_bfd_coff_internal_syment_name + (input_bfd, is, buf)); - if (isym._n._n_n._n_zeroes == 0 - && isym._n._n_n._n_offset != 0) - { - /* This symbol has a long name. Enter it in the string - table we are building. If *debug_index != -1, the - name has already been entered in the .debug section. */ - if (debug_index != NULL && *debug_index != (unsigned long) -1) - isym._n._n_n._n_offset = *debug_index; - else - { - const char *name; - bfd_size_type indx; + if (name == NULL) + return FALSE; - name = _bfd_coff_internal_syment_name (input_bfd, &isym, - (char *) NULL); - if (name == NULL) - return false; - indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); - if (indx == (bfd_size_type) -1) - return false; - isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; + if (! ((*finfo->info->callbacks->unattached_reloc) + (finfo->info, name, input_bfd, o, + irel->r_vaddr))) + return FALSE; + } + } } - } - 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 - + (*csectpp)->output_offset - - (*csectpp)->vma); - } - - /* The value of a C_FILE symbol is the symbol index of the - next C_FILE symbol. The value of the last C_FILE symbol - is -1. We try to get this right, below, just before we - write the symbols out, but in the general case we may - have to write the symbol out twice. */ - if (isym.n_sclass == C_FILE) - { - if (finfo->last_file_index != -1 - && finfo->last_file.n_value != (long) output_index) + quiet = FALSE; + switch (irel->r_type) { - /* We must correct the value of the last C_FILE entry. */ - finfo->last_file.n_value = output_index; - if ((bfd_size_type) finfo->last_file_index >= syment_base) + 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) + break; + /* Fall through. */ + case R_POS: + case R_NEG: + case R_RL: + case R_RLA: + /* This reloc needs to be copied into the .loader + section. */ + ldrel.l_vaddr = irel->r_vaddr; + if (r_symndx == -1) + 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)) { - /* The last C_FILE symbol is in this input file. */ - bfd_coff_swap_sym_out (output_bfd, - (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - - syment_base) - * osymesz))); + asection *sec; + + 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 + sec = h->root.u.def.section; + sec = sec->output_section; + + if (strcmp (sec->name, ".text") == 0) + ldrel.l_symndx = 0; + else if (strcmp (sec->name, ".data") == 0) + ldrel.l_symndx = 1; + else if (strcmp (sec->name, ".bss") == 0) + ldrel.l_symndx = 2; + else + { + (*_bfd_error_handler) + (_("%B: loader reloc in unrecognized section `%A'"), + input_bfd, sec); + bfd_set_error (bfd_error_nonrepresentable_section); + return FALSE; + } } else { - /* We have already written out the last C_FILE - symbol. We need to write it out again. We - borrow *outsym temporarily. */ - 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) - != osymesz)) - return false; + 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) + (_("%B: `%s' in loader reloc but not loader sym"), + input_bfd, + h->root.root.string); + bfd_set_error (bfd_error_bad_value); + 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 + && strcmp (o->output_section->name, ".text") == 0 + && ! quiet) + { + (*_bfd_error_handler) + (_("%B: loader reloc in read-only section %A"), + input_bfd, o->output_section); + bfd_set_error (bfd_error_invalid_operation); + return FALSE; + } + bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, + finfo->ldrel); - finfo->last_file_index = output_index; - finfo->last_file = isym; - } + finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd); + break; - /* 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; + 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; + } } - /* Output the symbol. */ + o->output_section->reloc_count += o->reloc_count; + } - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); + /* Write out the modified section contents. */ + if (! bfd_set_section_contents (output_bfd, o->output_section, + contents, (file_ptr) o->output_offset, + o->size)) + return FALSE; + } - *indexp = output_index; + obj_coff_keep_syms (input_bfd) = keep_syms; - if (isym.n_sclass == C_EXT) - { - long indx; - struct xcoff_link_hash_entry *h; + if (! finfo->info->keep_memory) + { + if (! _bfd_coff_free_symbols (input_bfd)) + return FALSE; + } - indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) - / isymesz); - h = obj_xcoff_sym_hashes (input_bfd)[indx]; - BFD_ASSERT (h != NULL); - h->indx = output_index; - } + return TRUE; +} - /* 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; - } +#undef N_TMASK +#undef N_BTSHFT - output_index += add; - outsym += add * osymesz; - } +/* Sort relocs by VMA. This is called via qsort. */ - esym += add * isymesz; - isymp += add; - csectpp += add; - sym_hash += add; - if (debug_index != NULL) - debug_index += add; - ++indexp; - for (--add; add > 0; --add) - *indexp++ = -1; - } +static int +xcoff_sort_relocs (const void * p1, const void * p2) +{ + const struct internal_reloc *r1 = (const struct internal_reloc *) p1; + const struct internal_reloc *r2 = (const struct internal_reloc *) p2; - /* 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. */ + if (r1->r_vaddr > r2->r_vaddr) + return 1; + else if (r1->r_vaddr < r2->r_vaddr) + return -1; + else + return 0; +} - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - isymp = finfo->internal_syms; - indexp = finfo->sym_indices; - csectpp = xcoff_data (input_bfd)->csects; +/* Write out a non-XCOFF global symbol. */ + +static bfd_boolean +xcoff_write_global_symbol (struct xcoff_link_hash_entry *h, void * inf) +{ + 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; - while (esym < esym_end) + + if (h->root.type == bfd_link_hash_warning) { - int add; + h = (struct xcoff_link_hash_entry *) h->root.u.i.link; + if (h->root.type == bfd_link_hash_new) + return TRUE; + } - add = 1 + isymp->n_numaux; + /* If this symbol was garbage collected, just skip it. */ + if (xcoff_hash_table (finfo->info)->gc + && (h->flags & XCOFF_MARK) == 0) + return TRUE; - if (*indexp < 0) - esym += add * isymesz; - else - { - int i; + /* If we need a .loader section entry, write it out. */ + if (h->ldsym != NULL) + { + struct internal_ldsym *ldsym; + bfd *impbfd; - if (isymp->n_sclass == C_BSTAT) - { - struct internal_syment isym; - unsigned long indx; + ldsym = h->ldsym; - /* 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; + if (h->root.type == bfd_link_hash_undefined + || h->root.type == bfd_link_hash_undefweak) + { - 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); - } - } + ldsym->l_value = 0; + ldsym->l_scnum = N_UNDEF; + ldsym->l_smtype = XTY_ER; + impbfd = h->root.u.undef.abfd; - esym += isymesz; - outsym += osymesz; + } + else if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + asection *sec; - for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) - { - union internal_auxent aux; + sec = h->root.u.def.section; + ldsym->l_value = (sec->output_section->vma + + sec->output_offset + + h->root.u.def.value); + ldsym->l_scnum = sec->output_section->target_index; + ldsym->l_smtype = XTY_SD; + impbfd = sec->owner; - bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) &aux); + } + else + abort (); - if (isymp->n_sclass == C_FILE) - { - /* This is the file name (or some comment put in by - the compiler). If it is long, we must put it in - the string table. */ - if (aux.x_file.x_n.x_zeroes == 0 - && aux.x_file.x_n.x_offset != 0) - { - const char *filename; - bfd_size_type indx; + if (((h->flags & XCOFF_DEF_REGULAR) == 0 + && (h->flags & XCOFF_DEF_DYNAMIC) != 0) + || (h->flags & XCOFF_IMPORT) != 0) + /* 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; - BFD_ASSERT (aux.x_file.x_n.x_offset - >= STRING_SIZE_SIZE); - if (strings == NULL) - { - strings = _bfd_coff_read_string_table (input_bfd); - if (strings == NULL) - 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; - aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; - } - } - else if ((isymp->n_sclass == C_EXT - || isymp->n_sclass == C_HIDEXT) - && i + 1 == isymp->n_numaux) - { - /* We don't support type checking. I don't know if - 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. */ - 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; - - indx = aux.x_csect.x_scnlen.l; - if (indx < obj_raw_syment_count (input_bfd)) - { - long symindx; + if (((h->flags & XCOFF_DEF_REGULAR) != 0 + && (h->flags & XCOFF_DEF_DYNAMIC) != 0) + || (h->flags & XCOFF_EXPORT) != 0) + ldsym->l_smtype |= L_EXPORT; - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - aux.x_sym.x_tagndx.l = 0; - else - aux.x_sym.x_tagndx.l = symindx; - } - } - } - else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) - { - unsigned long indx; + if ((h->flags & XCOFF_ENTRY) != 0) + ldsym->l_smtype |= L_ENTRY; - if (ISFCN (isymp->n_type) - || ISTAG (isymp->n_sclass) - || 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. */ - while (finfo->sym_indices[indx] < 0 - && indx < obj_raw_syment_count (input_bfd)) - ++indx; - if (indx >= obj_raw_syment_count (input_bfd)) - indx = output_index; - else - indx = finfo->sym_indices[indx]; - aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx; - } - } + if ((h->flags & XCOFF_RTINIT) != 0) + ldsym->l_smtype = XTY_SD; - indx = aux.x_sym.x_tagndx.l; - if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) - { - long symindx; + ldsym->l_smclas = h->smclas; - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - aux.x_sym.x_tagndx.l = 0; - else - aux.x_sym.x_tagndx.l = symindx; - } - } + 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; - /* Copy over the line numbers, unless we are stripping - them. We do this on a symbol by symbol basis in - order to more easily handle garbage collection. */ - if ((isymp->n_sclass == C_EXT - || isymp->n_sclass == C_HIDEXT) - && i == 0 - && isymp->n_numaux > 1 - && ISFCN (isymp->n_type) - && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) - { - if (finfo->info->strip != strip_none - && finfo->info->strip != strip_some) - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; - else - { - asection *enclosing; - unsigned int enc_count; - bfd_size_type linoff; - struct internal_lineno lin; + else if ((h->flags & (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) == + (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) + ldsym->l_smclas = XMC_SV3264; - o = *csectpp; - enclosing = xcoff_section_data (abfd, o)->enclosing; - enc_count = xcoff_section_data (abfd, o)->lineno_count; - if (oline != enclosing) - { - if (bfd_seek (input_bfd, - enclosing->line_filepos, - SEEK_SET) != 0 - || (bfd_read (finfo->linenos, linesz, - enc_count, input_bfd) - != linesz * enc_count)) - return false; - oline = enclosing; - } + else if (h->flags & XCOFF_SYSCALL32) + ldsym->l_smclas = XMC_SV; - linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr - - enclosing->line_filepos); + else if (h->flags & XCOFF_SYSCALL64) + ldsym->l_smclas = XMC_SV64; + } - bfd_coff_swap_lineno_in (input_bfd, - (PTR) (finfo->linenos + linoff), - (PTR) &lin); - if (lin.l_lnno != 0 - || ((bfd_size_type) lin.l_addr.l_symndx - != ((esym - - isymesz - - ((bfd_byte *) - obj_coff_external_syms (input_bfd))) - / isymesz))) - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; - else - { - bfd_byte *linpend, *linp; - bfd_vma offset; - bfd_size_type count; + 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; + else if (impbfd == NULL) + ldsym->l_ifile = 0; + else + { + BFD_ASSERT (impbfd->xvec == output_bfd->xvec); + ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; + } + } - lin.l_addr.l_symndx = *indexp; - bfd_coff_swap_lineno_out (output_bfd, (PTR) &lin, - (PTR) (finfo->linenos - + linoff)); + ldsym->l_parm = 0; - linpend = (finfo->linenos - + enc_count * linesz); - offset = (o->output_section->vma - + o->output_offset - - o->vma); - for (linp = finfo->linenos + linoff + linesz; - linp < linpend; - linp += linesz) - { - bfd_coff_swap_lineno_in (input_bfd, (PTR) linp, - (PTR) &lin); - if (lin.l_lnno == 0) - break; - lin.l_addr.l_paddr += offset; - bfd_coff_swap_lineno_out (output_bfd, - (PTR) &lin, - (PTR) linp); - } + BFD_ASSERT (h->ldindx >= 0); - count = (linp - (finfo->linenos + linoff)) / linesz; + bfd_xcoff_swap_ldsym_out (output_bfd, ldsym, + (finfo->ldsym + + (h->ldindx - 3) + * bfd_xcoff_ldsymsz(finfo->output_bfd))); + h->ldsym = NULL; + } - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = - (o->output_section->line_filepos - + o->output_section->lineno_count * linesz); + /* If this symbol needs global linkage code, write it out. */ + if (h->root.type == bfd_link_hash_defined + && (h->root.u.def.section + == xcoff_hash_table (finfo->info)->linkage_section)) + { + bfd_byte *p; + bfd_vma tocoff; + unsigned int i; - if (bfd_seek (output_bfd, - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr, - SEEK_SET) != 0 - || (bfd_write (finfo->linenos + linoff, - linesz, count, output_bfd) - != linesz * count)) - return false; + p = h->root.u.def.section->contents + h->root.u.def.value; - o->output_section->lineno_count += count; + /* The first instruction in the global linkage code loads a + specific TOC element. */ + tocoff = (h->descriptor->toc_section->output_section->vma + + h->descriptor->toc_section->output_offset + - xcoff_data (output_bfd)->toc); - if (incls > 0) - { - struct internal_syment *iisp, *iispend; - long *iindp; - bfd_byte *oos; - int iiadd; + if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) + tocoff += h->descriptor->u.toc_offset; - /* 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 - >= enclosing->line_filepos + linoff) - && ((bfd_size_type) iisp->n_value - < (enclosing->line_filepos - + enc_count * linesz))) - { - struct internal_syment iis; + /* 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]); + } - 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; - } + /* If we created a TOC entry for this symbol, write out the required + relocs. */ + if ((h->flags & XCOFF_SET_TOC) != 0) + { + asection *tocsec; + asection *osec; + int oindx; + struct internal_reloc *irel; + struct internal_ldrel ldrel; + struct internal_syment irsym; + union internal_auxent iraux; - iiadd = 1 + iisp->n_numaux; - if (*iindp >= 0) - oos += iiadd * osymesz; - iisp += iiadd; - iindp += iiadd; - } - } - } - } - } + tocsec = h->toc_section; + osec = tocsec->output_section; + oindx = osec->target_index; + irel = finfo->section_info[oindx].relocs + osec->reloc_count; + irel->r_vaddr = (osec->vma + + tocsec->output_offset + + h->u.toc_offset); - bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) outsym); - outsym += osymesz; - esym += isymesz; - } + if (h->indx >= 0) + irel->r_symndx = h->indx; + else + { + h->indx = -2; + irel->r_symndx = obj_raw_syment_count (output_bfd); } - indexp += add; - isymp += add; - csectpp += add; - } + BFD_ASSERT (h->ldindx >= 0); - /* If we swapped out a C_FILE symbol, guess that the next C_FILE - symbol will be the first symbol in the next input file. In the - normal case, this will save us from writing out the C_FILE symbol - again. */ - if (finfo->last_file_index != -1 - && (bfd_size_type) finfo->last_file_index >= syment_base) - { - finfo->last_file.n_value = output_index; - bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - syment_base) - * osymesz))); - } + /* 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; - /* 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; + /* 32 bit uses a 32 bit R_POS to do the relocations + 64 bit uses a 64 bit R_POS to do the relocations - BFD_ASSERT ((obj_raw_syment_count (output_bfd) - + (outsym - finfo->outsyms) / osymesz) - == output_index); - - obj_raw_syment_count (output_bfd) = output_index; - } - - /* 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; - - /* Relocate the contents of each section. */ - for (o = input_bfd->sections; o != NULL; o = o->next) - { - bfd_byte *contents; + Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit - if (! o->linker_mark) + Which one is determined by the backend. */ + if (bfd_xcoff_is_xcoff64 (output_bfd)) { - /* This section was omitted from the link. */ - continue; + irel->r_size = 63; + iraux.x_csect.x_scnlen.l = 8; } - - 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. */ - 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 + else if (bfd_xcoff_is_xcoff32 (output_bfd)) { - if (! bfd_get_section_contents (input_bfd, o, finfo->contents, - (file_ptr) 0, o->_raw_size)) - return false; - contents = finfo->contents; + irel->r_size = 31; + iraux.x_csect.x_scnlen.l = 4; } + else + return FALSE; - if ((o->flags & SEC_RELOC) != 0) - { - int target_index; - struct internal_reloc *internal_relocs; - struct internal_reloc *irel; - bfd_vma offset; - struct internal_reloc *irelend; - struct xcoff_link_hash_entry **rel_hash; - long r_symndx; - - /* 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, - (finfo->section_info[target_index].relocs - + o->output_section->reloc_count))); - if (internal_relocs == NULL) - return false; + irel->r_type = R_POS; + finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; + ++osec->reloc_count; - /* Call processor specific code to relocate the section - 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; + ldrel.l_vaddr = irel->r_vaddr; + ldrel.l_symndx = h->ldindx; + ldrel.l_rtype = (irel->r_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); - offset = o->output_section->vma + o->output_offset - o->vma; - irel = internal_relocs; - irelend = irel + o->reloc_count; - rel_hash = (finfo->section_info[target_index].rel_hashes - + o->output_section->reloc_count); - for (; irel < irelend; irel++, rel_hash++) + /* 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, (void *) &irsym, (void *) outsym); + outsym += bfd_coff_symesz (output_bfd); + + /* Note : iraux is initialized above. */ + bfd_coff_swap_aux_out (output_bfd, (void *) &iraux, T_NULL, C_HIDEXT, + 0, 1, (void *) outsym); + outsym += bfd_coff_auxesz (output_bfd); + + if (h->indx >= 0) { - struct xcoff_link_hash_entry *h = NULL; - struct internal_ldrel ldrel; + /* 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; + } + } + } - *rel_hash = NULL; + /* 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. - /* Adjust the reloc address and symbol index. */ + 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; - irel->r_vaddr += offset; + 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; - r_symndx = irel->r_symndx; + sec = h->root.u.def.section; + osec = sec->output_section; + oindx = osec->target_index; + p = sec->contents + h->root.u.def.value; - if (r_symndx != -1) - { - h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; - 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; + 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; - n = ((struct xcoff_toc_rel_hash *) - bfd_alloc (finfo->output_bfd, - sizeof (struct xcoff_toc_rel_hash))); - 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 = h->indx; - else - { - /* This symbol is being written at the end - of the file, and we do not yet know the - symbol index. We save the pointer to the - hash table entry in the rel_hash list. - We set the indx field to -2 to indicate - that this symbol must not be stripped. */ - *rel_hash = h; - h->indx = -2; - } - } - else - { - long indx; + 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; - indx = finfo->sym_indices[r_symndx]; + 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); + } - if (indx == -1) - { - struct internal_syment *is; + tsec = coff_section_from_bfd_index (output_bfd, + xcoff_data (output_bfd)->sntoc); - /* Relocations against a TC0 TOC anchor are - automatically transformed to be against - the TOC anchor in the output file. */ - is = finfo->internal_syms + r_symndx; - if (is->n_sclass == C_HIDEXT - && is->n_numaux > 0) - { - PTR auxptr; - union internal_auxent aux; + ++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; - auxptr = ((PTR) - (((bfd_byte *) - obj_coff_external_syms (input_bfd)) - + ((r_symndx + is->n_numaux) - * isymesz))); - bfd_coff_swap_aux_in (input_bfd, auxptr, - is->n_type, is->n_sclass, - is->n_numaux - 1, - is->n_numaux, - (PTR) &aux); - if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD - && aux.x_csect.x_smclas == XMC_TC0) - indx = finfo->toc_symindx; - } - } + 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 (indx != -1) - irel->r_symndx = indx; - else - { - struct internal_syment *is; - const char *name; - char buf[SYMNMLEN + 1]; + if (h->indx >= 0 || finfo->info->strip == strip_all) + { + BFD_ASSERT (outsym == finfo->outsyms); + return TRUE; + } - /* This reloc is against a symbol we are - stripping. It would be possible to handle - this case, but I don't think it's worth it. */ - is = finfo->internal_syms + r_symndx; + 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))) + { + BFD_ASSERT (outsym == finfo->outsyms); + return TRUE; + } - name = (_bfd_coff_internal_syment_name - (input_bfd, is, buf)); - if (name == NULL) - return false; + if (h->indx != -2 + && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) + { + BFD_ASSERT (outsym == finfo->outsyms); + return TRUE; + } - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, name, input_bfd, o, - irel->r_vaddr))) - return false; - } - } - } + memset (&aux, 0, sizeof aux); - switch (irel->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) - break; - /* Fall through. */ - case R_POS: - case R_NEG: - case R_RL: - case R_RLA: - /* This reloc needs to be copied into the .loader - section. */ - ldrel.l_vaddr = irel->r_vaddr; - if (r_symndx == -1) - ldrel.l_symndx = -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; + h->indx = obj_raw_syment_count (output_bfd); - 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 - sec = h->root.u.def.section; - sec = sec->output_section; + result = bfd_xcoff_put_symbol_name (output_bfd, finfo->strtab, &isym, + h->root.root.string); + if (!result) + return FALSE; - if (strcmp (sec->name, ".text") == 0) - ldrel.l_symndx = 0; - else if (strcmp (sec->name, ".data") == 0) - ldrel.l_symndx = 1; - else if (strcmp (sec->name, ".bss") == 0) - ldrel.l_symndx = 2; - else - { - (*_bfd_error_handler) - ("%s: loader reloc in unrecognized section `%s'", - bfd_get_filename (input_bfd), - sec->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - } - else - { - if (h->ldindx < 0) - { - (*_bfd_error_handler) - ("%s: `%s' in loader reloc but not loader sym", - bfd_get_filename (input_bfd), - h->root.root.string); - bfd_set_error (bfd_error_bad_value); - 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 - && strcmp (o->output_section->name, ".text") == 0) - { - (*_bfd_error_handler) - ("%s: loader reloc in read-only section %s", - bfd_get_filename (input_bfd), - bfd_get_section_name (finfo->output_bfd, - o->output_section)); - bfd_set_error (bfd_error_invalid_operation); - return false; - } - xcoff_swap_ldrel_out (output_bfd, &ldrel, - finfo->ldrel); - BFD_ASSERT (sizeof (struct external_ldrel) == LDRELSZ); - ++finfo->ldrel; - break; + if (h->root.type == bfd_link_hash_undefined + || h->root.type == bfd_link_hash_undefweak) + { + isym.n_value = 0; + 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) + && 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; - 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. */ + isym.n_value = (h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset + + h->root.u.def.value); + 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; + + 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; } } - - o->output_section->reloc_count += o->reloc_count; } - - /* Write out the modified section contents. */ - if (! bfd_set_section_contents (output_bfd, o->output_section, - contents, o->output_offset, - (o->_cooked_size != 0 - ? o->_cooked_size - : o->_raw_size))) - return false; } - - obj_coff_keep_syms (input_bfd) = keep_syms; - - if (! finfo->info->keep_memory) + else if (h->root.type == bfd_link_hash_common) { - if (! _bfd_coff_free_symbols (input_bfd)) - return false; + 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 (); - return true; -} - -#undef N_TMASK -#undef N_BTSHFT - -/* Write out a non-XCOFF global symbol. */ - -static boolean -xcoff_write_global_symbol (h, p) - struct xcoff_link_hash_entry *h; - PTR p; -{ - struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) p; - bfd *output_bfd; - bfd_byte *outsym; - struct internal_syment isym; - union internal_auxent aux; + isym.n_type = T_NULL; + isym.n_numaux = 1; - output_bfd = finfo->output_bfd; + bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); + outsym += bfd_coff_symesz (output_bfd); - /* If this symbol was garbage collected, just skip it. */ - if (xcoff_hash_table (finfo->info)->gc - && (h->flags & XCOFF_MARK) == 0) - return true; + aux.x_csect.x_smclas = h->smclas; + bfd_coff_swap_aux_out (output_bfd, (void *) &aux, T_NULL, isym.n_sclass, 0, 1, + (void *) outsym); + outsym += bfd_coff_auxesz (output_bfd); - /* If we need a .loader section entry, write it out. */ - if (h->ldsym != NULL) + if ((h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && h->smclas != XMC_XO) { - struct internal_ldsym *ldsym; - bfd *impbfd; + /* We just output an SD symbol. Now output an LD symbol. */ + h->indx += 2; - ldsym = h->ldsym; + isym.n_sclass = C_EXT; + bfd_coff_swap_sym_out (output_bfd, (void *) &isym, (void *) outsym); + outsym += bfd_coff_symesz (output_bfd); - 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; + 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, (void *) &aux, T_NULL, C_EXT, 0, 1, + (void *) outsym); + outsym += bfd_coff_auxesz (output_bfd); + } - sec = h->root.u.def.section; - ldsym->l_value = (sec->output_section->vma - + sec->output_offset - + h->root.u.def.value); - ldsym->l_scnum = sec->output_section->target_index; - ldsym->l_smtype = XTY_SD; - impbfd = sec->owner; - } - else - abort (); + 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); - if (((h->flags & XCOFF_DEF_REGULAR) == 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_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_EXPORT) != 0) - ldsym->l_smtype |= L_EXPORT; - if ((h->flags & XCOFF_ENTRY) != 0) - ldsym->l_smtype |= L_ENTRY; + return TRUE; +} - ldsym->l_smclas = h->smclas; +/* Handle a link order which is supposed to generate a reloc. */ - 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; - else if (impbfd == NULL) - ldsym->l_ifile = 0; - else - { - BFD_ASSERT (impbfd->xvec == output_bfd->xvec); - ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; - } - } +static bfd_boolean +xcoff_reloc_link_order (bfd *output_bfd, + struct xcoff_final_link_info *finfo, + asection *output_section, + 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; - ldsym->l_parm = 0; + 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 (); - BFD_ASSERT (h->ldindx >= 0); - BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym)); - xcoff_swap_ldsym_out (output_bfd, ldsym, finfo->ldsym + h->ldindx - 3); - h->ldsym = NULL; + 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; } - /* If this symbol needs global linkage code, write it out. */ - if (h->root.type == bfd_link_hash_defined - && (h->root.u.def.section - == xcoff_hash_table (finfo->info)->linkage_section)) + 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) { - bfd_byte *p; - bfd_vma tocoff; - unsigned int i; - - p = h->root.u.def.section->contents + h->root.u.def.value; + if (! ((*finfo->info->callbacks->unattached_reloc) + (finfo->info, link_order->u.reloc.p->u.name, NULL, NULL, (bfd_vma) 0))) + return FALSE; + return TRUE; + } - /* The first instruction in the global linkage code loads a - specific TOC element. */ - tocoff = (h->descriptor->toc_section->output_section->vma - + h->descriptor->toc_section->output_offset - - xcoff_data (output_bfd)->toc); - if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) - tocoff += h->descriptor->u.toc_offset; - bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | (tocoff & 0xffff), 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->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; } - /* If we created a TOC entry for this symbol, write out the required - relocs. */ - if ((h->flags & XCOFF_SET_TOC) != 0) + addend = link_order->u.reloc.p->addend; + if (hsec != NULL) + addend += (hsec->output_section->vma + + hsec->output_offset + + hval); + + if (addend != 0) { - asection *tocsec; - asection *osec; - int oindx; - struct internal_reloc *irel; - struct internal_ldrel ldrel; + bfd_size_type size; + bfd_byte *buf; + bfd_reloc_status_type rstat; + bfd_boolean ok; - tocsec = h->toc_section; - osec = tocsec->output_section; - oindx = osec->target_index; - irel = finfo->section_info[oindx].relocs + osec->reloc_count; - irel->r_vaddr = (osec->vma - + tocsec->output_offset - + h->u.toc_offset); - if (h->indx >= 0) - irel->r_symndx = h->indx; - else + size = bfd_get_reloc_size (howto); + buf = bfd_zmalloc (size); + if (buf == NULL) + return FALSE; + + rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); + switch (rstat) { - h->indx = -2; - irel->r_symndx = obj_raw_syment_count (output_bfd); + case bfd_reloc_ok: + break; + default: + case bfd_reloc_outofrange: + abort (); + case bfd_reloc_overflow: + if (! ((*finfo->info->callbacks->reloc_overflow) + (finfo->info, NULL, link_order->u.reloc.p->u.name, + howto->name, addend, NULL, NULL, (bfd_vma) 0))) + { + free (buf); + return FALSE; + } + break; } - 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_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; + ok = bfd_set_section_contents (output_bfd, output_section, (void *) buf, + (file_ptr) link_order->offset, size); + free (buf); + if (! ok) + return FALSE; } - /* 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. */ - 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)) + /* Store the reloc information in the right place. It will get + swapped and written out at the end of the final_link routine. */ + irel = (finfo->section_info[output_section->target_index].relocs + + output_section->reloc_count); + rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes + + output_section->reloc_count); + + memset (irel, 0, sizeof (struct internal_reloc)); + *rel_hash_ptr = NULL; + + irel->r_vaddr = output_section->vma + link_order->offset; + + if (h->indx >= 0) + irel->r_symndx = h->indx; + else { - 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; + /* Set the index to -2 to force this symbol to get written out. */ + h->indx = -2; + *rel_hash_ptr = h; + irel->r_symndx = 0; + } - sec = h->root.u.def.section; - osec = sec->output_section; - oindx = osec->target_index; - p = sec->contents + h->root.u.def.value; + irel->r_type = howto->type; + irel->r_size = howto->bitsize - 1; + if (howto->complain_on_overflow == complain_overflow_signed) + irel->r_size |= 0x80; - 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; - bfd_put_32 (output_bfd, - (esec->output_section->vma - + esec->output_offset - + hentry->root.u.def.value), - p); + ++output_section->reloc_count; - 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 = 31; - finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; - ++osec->reloc_count; + /* Now output the reloc to the .loader section. */ - ldrel.l_vaddr = irel->r_vaddr; - if (strcmp (esec->output_section->name, ".text") == 0) + ldrel.l_vaddr = irel->r_vaddr; + + if (hsec != NULL) + { + const char *secname; + + secname = hsec->output_section->name; + + if (strcmp (secname, ".text") == 0) ldrel.l_symndx = 0; - else if (strcmp (esec->output_section->name, ".data") == 0) + else if (strcmp (secname, ".data") == 0) ldrel.l_symndx = 1; - else if (strcmp (esec->output_section->name, ".bss") == 0) + else if (strcmp (secname, ".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); + (_("%s: loader reloc in unrecognized section `%s'"), + bfd_get_filename (output_bfd), secname); bfd_set_error (bfd_error_nonrepresentable_section); - return false; + return FALSE; } - ldrel.l_rtype = (31 << 8) | R_POS; - ldrel.l_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - - bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4); - - 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 - + 4); - irel->r_symndx = tsec->output_section->target_index; - irel->r_type = R_POS; - irel->r_size = 31; - 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 + } + else + { + if (h->ldindx < 0) { (*_bfd_error_handler) - ("%s: loader reloc in unrecognized section `%s'", + (_("%s: `%s' in loader reloc but not loader sym"), bfd_get_filename (output_bfd), - tsec->output_section->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; + h->root.root.string); + bfd_set_error (bfd_error_bad_value); + return FALSE; } - ldrel.l_rtype = (31 << 8) | R_POS; - ldrel.l_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; + ldrel.l_symndx = h->ldindx; } - if (h->indx >= 0) - return true; + 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); - 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; + return TRUE; +} - if (h->indx != -2 - && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) - return true; +/* Do the final link step. */ - outsym = finfo->outsyms; +bfd_boolean +_bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info) +{ + bfd_size_type symesz; + struct xcoff_final_link_info finfo; + asection *o; + struct bfd_link_order *p; + 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; + unsigned int linesz; + bfd *sub; + bfd_byte *external_relocs = NULL; + char strbuf[STRING_SIZE_SIZE]; + file_ptr pos; + bfd_size_type amt; - memset (&aux, 0, sizeof aux); + if (info->shared) + abfd->flags |= DYNAMIC; - h->indx = obj_raw_syment_count (output_bfd); + symesz = bfd_coff_symesz (abfd); - if (strlen (h->root.root.string) <= SYMNMLEN) - strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); - else + finfo.info = info; + finfo.output_bfd = abfd; + finfo.strtab = NULL; + finfo.section_info = NULL; + finfo.last_file_index = -1; + finfo.toc_symindx = -1; + finfo.internal_syms = NULL; + finfo.sym_indices = NULL; + finfo.outsyms = NULL; + finfo.linenos = NULL; + finfo.contents = NULL; + finfo.external_relocs = NULL; + + 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; + + finfo.strtab = _bfd_stringtab_init (); + 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) { - 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; + o->reloc_count = 0; + o->lineno_count = 0; + for (p = o->map_head.link_order; 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->rawsize > max_contents_size) + max_contents_size = sec->rawsize; + if (sec->size > max_contents_size) + max_contents_size = sec->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; + } } - if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) + /* Compute the file positions for all the sections. */ + if (abfd->output_has_begun) { - isym.n_value = 0; - isym.n_scnum = N_UNDEF; - isym.n_sclass = C_EXT; - aux.x_csect.x_smtyp = XTY_ER; + if (xcoff_hash_table (info)->file_align != 0) + abort (); } - else if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) + else { - struct xcoff_link_size_list *l; + bfd_vma file_align; - 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; - isym.n_sclass = C_HIDEXT; - aux.x_csect.x_smtyp = XTY_SD; + file_align = xcoff_hash_table (info)->file_align; + if (file_align != 0) + { + bfd_boolean saw_contents; + int indx; + 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; + for (o = abfd->sections; o != NULL; o = o->next) + { + if (strcmp (o->name, ".pad") == 0) + saw_contents = FALSE; + else if ((o->flags & SEC_HAS_CONTENTS) != 0 + && (o->flags & SEC_LOAD) != 0) + { + if (! saw_contents) + saw_contents = TRUE; + else + { + asection *n; + + /* Create a pad section and place it before the section + that needs padding. This requires unlinking and + relinking the bfd's section list. */ + + n = bfd_make_section_anyway_with_flags (abfd, ".pad", + SEC_HAS_CONTENTS); + n->alignment_power = 0; + + bfd_section_list_remove (abfd, n); + bfd_section_list_insert_before (abfd, o, n); + saw_contents = FALSE; + } + } + } + + /* Reset the section indices after inserting the new + sections. */ + indx = 0; + for (o = abfd->sections; o != NULL; o = o->next) + { + ++indx; + o->target_index = indx; + } + 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. */ + sofar = bfd_coff_filhsz (abfd); + 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) + { + if (strcmp (o->name, ".pad") == 0) + { + bfd_vma pageoff; + + BFD_ASSERT (o->size == 0); + pageoff = sofar & (file_align - 1); + if (pageoff != 0) + { + o->size = file_align - pageoff; + sofar += file_align - pageoff; + o->flags |= SEC_HAS_CONTENTS; + } + } + else + { + if ((o->flags & SEC_HAS_CONTENTS) != 0) + sofar += BFD_ALIGN (o->size, + 1 << o->alignment_power); + } + } + } + + if (! bfd_coff_compute_section_file_positions (abfd)) + goto error_return; + } + + /* Allocate space for the pointers we need to keep for the relocs. */ + { + unsigned int i; + + /* We use section_count + 1, rather than section_count, because + the target_index fields are 1 based. */ + amt = abfd->section_count + 1; + amt *= sizeof (struct xcoff_link_section_info); + finfo.section_info = bfd_malloc (amt); + if (finfo.section_info == NULL) + 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; + } + } - if ((h->flags & XCOFF_HAS_SIZE) != 0) + /* 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->reloc_count == 0) + o->rel_filepos = 0; + else { - for (l = xcoff_hash_table (finfo->info)->size_list; - l != NULL; - l = l->next) + /* 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 { - if (l->h == h) - { - aux.x_csect.x_scnlen.l = l->size; - break; - } + o->flags |= SEC_RELOC; + o->rel_filepos = rel_filepos; + rel_filepos += o->reloc_count * relsz; } - } - } - 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 (); - isym.n_type = T_NULL; - isym.n_numaux = 1; + /* 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. - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - outsym += bfd_coff_symesz (output_bfd); + 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 = bfd_malloc (amt); - aux.x_csect.x_smclas = h->smclas; + amt = o->reloc_count; + amt *= sizeof (struct xcoff_link_hash_entry *); + finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt); - 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 (finfo.section_info[o->target_index].relocs == NULL + || finfo.section_info[o->target_index].rel_hashes == NULL) + goto error_return; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) + if (o->reloc_count > max_output_reloc_count) + max_output_reloc_count = o->reloc_count; + } + } + + /* 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) { - /* We just output an SD symbol. Now output an LD symbol. */ + if (o->lineno_count == 0) + o->line_filepos = 0; + else + { + o->line_filepos = line_filepos; + line_filepos += o->lineno_count * linesz; + } - h->indx += 2; + /* 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; + } - isym.n_sclass = C_EXT; - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - outsym += bfd_coff_symesz (output_bfd); + obj_sym_filepos (abfd) = line_filepos; - aux.x_csect.x_smtyp = XTY_LD; - aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd); + /* 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; - bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, C_EXT, 0, 1, - (PTR) outsym); - outsym += bfd_coff_auxesz (output_bfd); + sub->output_has_begun = FALSE; + sz = obj_raw_syment_count (sub); + if (sz > max_sym_count) + max_sym_count = sz; } - 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; - obj_raw_syment_count (output_bfd) += - (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd); - - return true; -} + /* Allocate some buffers used while linking. */ + amt = max_sym_count * sizeof (struct internal_syment); + finfo.internal_syms = bfd_malloc (amt); -/* Handle a link order which is supposed to generate a reloc. */ + amt = max_sym_count * sizeof (long); + finfo.sym_indices = bfd_malloc (amt); -static boolean -xcoff_reloc_link_order (output_bfd, finfo, output_section, link_order) - bfd *output_bfd; - struct xcoff_final_link_info *finfo; - asection *output_section; - 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; + amt = (max_sym_count + 1) * symesz; + finfo.outsyms = bfd_malloc (amt); - 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 (); - } + amt = max_lineno_count * bfd_coff_linesz (abfd); + finfo.linenos = bfd_malloc (amt); - 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; - } + amt = max_contents_size; + finfo.contents = bfd_malloc (amt); - 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; - } + amt = max_reloc_count * relsz; + finfo.external_relocs = bfd_malloc (amt); - 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; - } + 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)) + goto error_return; - addend = link_order->u.reloc.p->addend; - if (hsec != NULL) - addend += (hsec->output_section->vma - + hsec->output_offset - + hval); + obj_raw_syment_count (abfd) = 0; + xcoff_data (abfd)->toc = (bfd_vma) -1; - if (addend != 0) + /* We now know the position of everything in the file, except that + we don't know the size of the symbol table and therefore we don't + know where the string table starts. We just build the string + table in memory as we go along. We process all the relocations + for a single input file at once. */ + for (o = abfd->sections; o != NULL; o = o->next) { - bfd_size_type size; - bfd_byte *buf; - bfd_reloc_status_type rstat; - boolean ok; - - size = bfd_get_reloc_size (howto); - buf = (bfd_byte *) bfd_zmalloc (size); - if (buf == NULL) - return false; - - rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); - switch (rstat) + for (p = o->map_head.link_order; p != NULL; p = p->next) { - case bfd_reloc_ok: - break; - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, link_order->u.reloc.p->u.name, - howto->name, addend, (bfd *) NULL, (asection *) NULL, - (bfd_vma) 0))) + if (p->type == bfd_indirect_link_order + && p->u.indirect.section->owner->xvec == abfd->xvec) { - free (buf); - return false; + sub = p->u.indirect.section->owner; + if (! sub->output_has_begun) + { + if (! xcoff_link_input_bfd (&finfo, sub)) + goto error_return; + sub->output_has_begun = TRUE; + } + } + else if (p->type == bfd_section_reloc_link_order + || p->type == bfd_symbol_reloc_link_order) + { + if (! xcoff_reloc_link_order (abfd, &finfo, o, p)) + goto error_return; + } + else + { + if (! _bfd_default_link_order (abfd, info, o, p)) + goto error_return; } - break; } - ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, - (file_ptr) link_order->offset, size); - free (buf); - if (! ok) - return false; } - /* Store the reloc information in the right place. It will get - swapped and written out at the end of the final_link routine. */ - - irel = (finfo->section_info[output_section->target_index].relocs - + output_section->reloc_count); - rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes - + output_section->reloc_count); - - memset (irel, 0, sizeof (struct internal_reloc)); - *rel_hash_ptr = NULL; - - irel->r_vaddr = output_section->vma + link_order->offset; - - if (h->indx >= 0) - irel->r_symndx = h->indx; - else + /* Free up the buffers used by xcoff_link_input_bfd. */ + if (finfo.internal_syms != 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; + free (finfo.internal_syms); + finfo.internal_syms = NULL; } - - 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) + if (finfo.sym_indices != NULL) { - const char *secname; - - 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 - { - (*_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; - } + free (finfo.sym_indices); + finfo.sym_indices = NULL; } - else + if (finfo.linenos != NULL) { - if (h->ldindx < 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; + free (finfo.linenos); + finfo.linenos = NULL; + } + if (finfo.contents != NULL) + { + free (finfo.contents); + finfo.contents = NULL; + } + if (finfo.external_relocs != NULL) + { + free (finfo.external_relocs); + finfo.external_relocs = NULL; } - ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; - ldrel.l_rsecnm = output_section->target_index; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - - return true; -} - -/* Sort relocs by VMA. This is called via qsort. */ - -static int -xcoff_sort_relocs (p1, p2) - const PTR p1; - const PTR p2; -{ - const struct internal_reloc *r1 = (const struct internal_reloc *) p1; - const struct internal_reloc *r2 = (const struct internal_reloc *) p2; - - if (r1->r_vaddr > r2->r_vaddr) - return 1; - else if (r1->r_vaddr < r2->r_vaddr) - return -1; - else - return 0; -} + /* The value of the last C_FILE symbol is supposed to be -1. Write + it out again. */ + if (finfo.last_file_index != -1) + { + finfo.last_file.n_value = -(bfd_vma) 1; + bfd_coff_swap_sym_out (abfd, (void *) &finfo.last_file, + (void *) finfo.outsyms); + 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; + } -/* 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; + /* Write out all the global symbols which do not come from XCOFF + input files. */ + xcoff_link_hash_traverse (xcoff_hash_table (info), + xcoff_write_global_symbol, + (void *) &finfo); - rel = relocs; - relend = rel + input_section->reloc_count; - for (; rel < relend; rel++) + if (finfo.outsyms != NULL) { - 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; + free (finfo.outsyms); + finfo.outsyms = NULL; + } - /* 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; + /* 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. */ + amt = max_output_reloc_count * relsz; + external_relocs = bfd_malloc (amt); + if (external_relocs == NULL && max_output_reloc_count != 0) + goto error_return; - symndx = rel->r_symndx; + 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; - if (symndx == -1) + /* A stripped file has no relocs. */ + if (info->strip == strip_all) { - h = NULL; - sym = NULL; - addend = 0; - } - else - { - h = obj_xcoff_sym_hashes (input_bfd)[symndx]; - sym = syms + symndx; - addend = - sym->n_value; + o->reloc_count = 0; + continue; } - /* We build the howto information on the fly. */ + if (o->reloc_count == 0) + continue; - 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 + irel = finfo.section_info[o->target_index].relocs; + irelend = irel + o->reloc_count; + rel_hash = finfo.section_info[o->target_index].rel_hashes; + for (; irel < irelend; irel++, rel_hash++, erel += relsz) { - howto.src_mask = howto.dst_mask = (1 << howto.bitsize) - 1; - if (howto.bitsize == 16) - howto.size = 1; + if (*rel_hash != NULL) + { + if ((*rel_hash)->indx < 0) + { + if (! ((*info->callbacks->unattached_reloc) + (info, (*rel_hash)->root.root.string, + NULL, o, irel->r_vaddr))) + goto error_return; + (*rel_hash)->indx = 0; + } + irel->r_symndx = (*rel_hash)->indx; + } } - howto.pcrel_offset = false; - val = 0; - - if (h == NULL) + for (toc_rel_hash = finfo.section_info[o->target_index].toc_rel_hashes; + toc_rel_hash != NULL; + toc_rel_hash = toc_rel_hash->next) { - asection *sec; - - if (symndx == -1) - { - sec = bfd_abs_section_ptr; - val = 0; - } - else + if (toc_rel_hash->h->u.toc_indx < 0) { - sec = sections[symndx]; - /* Hack to make sure we use the right TOC anchor value - if this reloc is against the TOC anchor. */ - if (sec->name[3] == '0' - && strcmp (sec->name, ".tc0") == 0) - val = xcoff_data (output_bfd)->toc; - else - val = (sec->output_section->vma - + sec->output_offset - + sym->n_value - - sec->vma); + if (! ((*info->callbacks->unattached_reloc) + (info, toc_rel_hash->h->root.root.string, + 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; } - 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->root.type == bfd_link_hash_common) - { - asection *sec; + /* 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. */ + qsort ((void *) finfo.section_info[o->target_index].relocs, + o->reloc_count, sizeof (struct internal_reloc), + xcoff_sort_relocs); - sec = h->root.u.c.p->section; - val = (sec->output_section->vma - + sec->output_offset); - } - else if ((h->flags & XCOFF_DEF_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; - } - } + irel = finfo.section_info[o->target_index].relocs; + irelend = irel + o->reloc_count; + erel = external_relocs; + for (; irel < irelend; irel++, rel_hash++, erel += relsz) + bfd_coff_swap_reloc_out (abfd, (void *) irel, (void *) erel); - /* 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. */ + rel_size = relsz * o->reloc_count; + if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 + || bfd_bwrite ((void *) external_relocs, rel_size, abfd) != rel_size) + goto error_return; + } - 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->smclas != XMC_TD) - { - if (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 (external_relocs != NULL) + { + free (external_relocs); + external_relocs = NULL; + } - BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); - val = (h->toc_section->output_section->vma - + h->toc_section->output_offset); - } + /* Free up the section information. */ + if (finfo.section_info != NULL) + { + unsigned int i; - 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; + for (i = 0; i < abfd->section_count; i++) + { + if (finfo.section_info[i].relocs != NULL) + free (finfo.section_info[i].relocs); + if (finfo.section_info[i].rel_hashes != NULL) + free (finfo.section_info[i].rel_hashes); } + free (finfo.section_info); + finfo.section_info = NULL; + } - /* 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; + /* Write out the loader section contents. */ + BFD_ASSERT ((bfd_byte *) finfo.ldrel + == (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, + (file_ptr) o->output_offset, o->size)) + goto error_return; - pnext = contents + (rel->r_vaddr - input_section->vma) + 4; - next = bfd_get_32 (input_bfd, pnext); + /* Write out the magic sections. */ + o = xcoff_hash_table (info)->linkage_section; + if (o->size > 0 + && ! bfd_set_section_contents (abfd, o->output_section, o->contents, + (file_ptr) o->output_offset, + o->size)) + goto error_return; + o = xcoff_hash_table (info)->toc_section; + if (o->size > 0 + && ! bfd_set_section_contents (abfd, o->output_section, o->contents, + (file_ptr) o->output_offset, + o->size)) + goto error_return; + o = xcoff_hash_table (info)->descriptor_section; + if (o->size > 0 + && ! bfd_set_section_contents (abfd, o->output_section, o->contents, + (file_ptr) o->output_offset, + o->size)) + goto error_return; - /* The _ptrgl function is magic. It is used by the AIX - compiler to call a function through a pointer. */ - if (h->smclas == XMC_GL - || strcmp (h->root.root.string, "._ptrgl") == 0) - { - 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 */ - } - } + /* Write out the string table. */ + pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz; + if (bfd_seek (abfd, pos, SEEK_SET) != 0) + goto error_return; + 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; - /* A PC relative reloc includes the section address. */ - if (howto.pc_relative) - addend += input_section->vma; + _bfd_stringtab_free (finfo.strtab); - rstat = _bfd_final_link_relocate (&howto, input_bfd, input_section, - contents, - rel->r_vaddr - input_section->vma, - val, addend); + /* Write out the debugging string table. */ + o = xcoff_hash_table (info)->debug_section; + if (o != NULL) + { + struct bfd_strtab_hash *debug_strtab; - 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); + debug_strtab = xcoff_hash_table (info)->debug_strtab; + BFD_ASSERT (o->output_section->size - o->output_offset + >= _bfd_stringtab_size (debug_strtab)); + 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; + } - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto_name, (bfd_vma) 0, input_bfd, - input_section, rel->r_vaddr - input_section->vma))) - return false; - } + /* Setting bfd_get_symcount to 0 will cause write_object_contents to + not try to write out the symbols. */ + bfd_get_symcount (abfd) = 0; + + return TRUE; + + error_return: + if (finfo.strtab != NULL) + _bfd_stringtab_free (finfo.strtab); + + if (finfo.section_info != NULL) + { + unsigned int i; + + for (i = 0; i < abfd->section_count; i++) + { + if (finfo.section_info[i].relocs != NULL) + free (finfo.section_info[i].relocs); + if (finfo.section_info[i].rel_hashes != NULL) + free (finfo.section_info[i].rel_hashes); } + free (finfo.section_info); } - return true; + if (finfo.internal_syms != NULL) + free (finfo.internal_syms); + if (finfo.sym_indices != NULL) + free (finfo.sym_indices); + if (finfo.outsyms != NULL) + free (finfo.outsyms); + if (finfo.linenos != NULL) + free (finfo.linenos); + if (finfo.contents != NULL) + free (finfo.contents); + if (finfo.external_relocs != NULL) + free (finfo.external_relocs); + if (external_relocs != NULL) + free (external_relocs); + return FALSE; }