X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fconfig%2Fobj-elf.c;h=f61285aa4177e6173bb0b026019ea68bcf1f5c83;hb=5c1aa77e6901df57b3bb6292212b93ed73757497;hp=11c5499777dc74b55651dc88b05dbecd5091f17b;hpb=4f0bccc7d88f5d63a2a295d608a17288e138ad44;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c index 11c5499777..f61285aa41 100644 --- a/gas/config/obj-elf.c +++ b/gas/config/obj-elf.c @@ -1,5 +1,6 @@ /* ELF object file format - Copyright (C) 1992, 1993 Free Software Foundation, Inc. + Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, + 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -13,15 +14,60 @@ 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 GAS; see the file COPYING. If not, write - to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + You should have received a copy of the GNU General Public License + along with GAS; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ +#define OBJ_HEADER "obj-elf.h" #include "as.h" +#include "safe-ctype.h" #include "subsegs.h" #include "obstack.h" +#include "struc-symbol.h" -static int obj_elf_write_symbol_p PARAMS ((symbolS *sym)); +#ifndef ECOFF_DEBUGGING +#define ECOFF_DEBUGGING 0 +#else +#define NEED_ECOFF_DEBUG +#endif + +#ifdef NEED_ECOFF_DEBUG +#include "ecoff.h" +#endif + +#ifdef TC_ALPHA +#include "elf/alpha.h" +#endif + +#ifdef TC_MIPS +#include "elf/mips.h" +#endif + +#ifdef TC_PPC +#include "elf/ppc.h" +#endif + +#ifdef TC_I370 +#include "elf/i370.h" +#endif + +static bfd_vma elf_s_get_size PARAMS ((symbolS *)); +static void elf_s_set_size PARAMS ((symbolS *, bfd_vma)); +static bfd_vma elf_s_get_align PARAMS ((symbolS *)); +static void elf_s_set_align PARAMS ((symbolS *, bfd_vma)); +static void elf_s_set_other PARAMS ((symbolS *, int)); +static int elf_sec_sym_ok_for_reloc PARAMS ((asection *)); +static void adjust_stab_sections PARAMS ((bfd *, asection *, PTR)); +static void build_group_lists PARAMS ((bfd *, asection *, PTR)); +static int elf_separate_stab_sections PARAMS ((void)); +static void elf_init_stab_section PARAMS ((segT)); +static symbolS *elf_common PARAMS ((int)); + +#ifdef NEED_ECOFF_DEBUG +static bfd_boolean elf_get_extr PARAMS ((asymbol *, EXTR *)); +static void elf_set_index PARAMS ((asymbol *, bfd_size_type)); +#endif static void obj_elf_line PARAMS ((int)); void obj_elf_version PARAMS ((int)); @@ -30,43 +76,198 @@ static void obj_elf_type PARAMS ((int)); static void obj_elf_ident PARAMS ((int)); static void obj_elf_weak PARAMS ((int)); static void obj_elf_local PARAMS ((int)); -static void obj_elf_common PARAMS ((int)); - -const pseudo_typeS obj_pseudo_table[] = +static void obj_elf_visibility PARAMS ((int)); +static int obj_elf_parse_section_letters PARAMS ((char *, size_t)); +static int obj_elf_section_word PARAMS ((char *, size_t)); +static char *obj_elf_section_name PARAMS ((void)); +static int obj_elf_section_type PARAMS ((char *, size_t)); +static void obj_elf_symver PARAMS ((int)); +static void obj_elf_subsection PARAMS ((int)); +static void obj_elf_popsection PARAMS ((int)); +static void obj_elf_tls_common PARAMS ((int)); + +static const pseudo_typeS elf_pseudo_table[] = { {"comm", obj_elf_common, 0}, + {"common", obj_elf_common, 1}, {"ident", obj_elf_ident, 0}, {"local", obj_elf_local, 0}, {"previous", obj_elf_previous, 0}, {"section", obj_elf_section, 0}, + {"section.s", obj_elf_section, 0}, + {"sect", obj_elf_section, 0}, + {"sect.s", obj_elf_section, 0}, + {"pushsection", obj_elf_section, 1}, + {"popsection", obj_elf_popsection, 0}, {"size", obj_elf_size, 0}, {"type", obj_elf_type, 0}, {"version", obj_elf_version, 0}, {"weak", obj_elf_weak, 0}, -/* These are used for stabs-in-elf configurations. */ + /* These define symbol visibility. */ + {"internal", obj_elf_visibility, STV_INTERNAL}, + {"hidden", obj_elf_visibility, STV_HIDDEN}, + {"protected", obj_elf_visibility, STV_PROTECTED}, + + /* These are used for stabs-in-elf configurations. */ {"line", obj_elf_line, 0}, - /* These are used for dwarf. */ + /* This is a GNU extension to handle symbol versions. */ + {"symver", obj_elf_symver, 0}, + + /* A GNU extension to change subsection only. */ + {"subsection", obj_elf_subsection, 0}, + + /* These are GNU extensions to aid in garbage collecting C++ vtables. */ + {"vtable_inherit", (void (*) PARAMS ((int))) &obj_elf_vtable_inherit, 0}, + {"vtable_entry", (void (*) PARAMS ((int))) &obj_elf_vtable_entry, 0}, + + /* These are used for dwarf. */ {"2byte", cons, 2}, {"4byte", cons, 4}, {"8byte", cons, 8}, - {NULL} /* end sentinel */ + /* We need to trap the section changing calls to handle .previous. */ + {"data", obj_elf_data, 0}, + {"text", obj_elf_text, 0}, + + {"tls_common", obj_elf_tls_common, 0}, + + /* End sentinel. */ + {NULL, NULL, 0}, +}; + +static const pseudo_typeS ecoff_debug_pseudo_table[] = +{ +#ifdef NEED_ECOFF_DEBUG + /* COFF style debugging information for ECOFF. .ln is not used; .loc + is used instead. */ + { "def", ecoff_directive_def, 0 }, + { "dim", ecoff_directive_dim, 0 }, + { "endef", ecoff_directive_endef, 0 }, + { "file", ecoff_directive_file, 0 }, + { "scl", ecoff_directive_scl, 0 }, + { "tag", ecoff_directive_tag, 0 }, + { "val", ecoff_directive_val, 0 }, + + /* COFF debugging requires pseudo-ops .size and .type, but ELF + already has meanings for those. We use .esize and .etype + instead. These are only generated by gcc anyhow. */ + { "esize", ecoff_directive_size, 0 }, + { "etype", ecoff_directive_type, 0 }, + + /* ECOFF specific debugging information. */ + { "begin", ecoff_directive_begin, 0 }, + { "bend", ecoff_directive_bend, 0 }, + { "end", ecoff_directive_end, 0 }, + { "ent", ecoff_directive_ent, 0 }, + { "fmask", ecoff_directive_fmask, 0 }, + { "frame", ecoff_directive_frame, 0 }, + { "loc", ecoff_directive_loc, 0 }, + { "mask", ecoff_directive_mask, 0 }, + + /* Other ECOFF directives. */ + { "extern", ecoff_directive_extern, 0 }, + + /* These are used on Irix. I don't know how to implement them. */ + { "alias", s_ignore, 0 }, + { "bgnb", s_ignore, 0 }, + { "endb", s_ignore, 0 }, + { "lab", s_ignore, 0 }, + { "noalias", s_ignore, 0 }, + { "verstamp", s_ignore, 0 }, + { "vreg", s_ignore, 0 }, +#endif + + {NULL, NULL, 0} /* end sentinel */ }; #undef NO_RELOC #include "aout/aout64.h" +/* This is called when the assembler starts. */ + +void +elf_begin () +{ + /* Add symbols for the known sections to the symbol table. */ + symbol_table_insert (section_symbol (bfd_get_section_by_name (stdoutput, + TEXT_SECTION_NAME))); + symbol_table_insert (section_symbol (bfd_get_section_by_name (stdoutput, + DATA_SECTION_NAME))); + symbol_table_insert (section_symbol (bfd_get_section_by_name (stdoutput, + BSS_SECTION_NAME))); +} + +void +elf_pop_insert () +{ + pop_insert (elf_pseudo_table); + if (ECOFF_DEBUGGING) + pop_insert (ecoff_debug_pseudo_table); +} + +static bfd_vma +elf_s_get_size (sym) + symbolS *sym; +{ + return S_GET_SIZE (sym); +} + +static void +elf_s_set_size (sym, sz) + symbolS *sym; + bfd_vma sz; +{ + S_SET_SIZE (sym, sz); +} + +static bfd_vma +elf_s_get_align (sym) + symbolS *sym; +{ + return S_GET_ALIGN (sym); +} + +static void +elf_s_set_align (sym, align) + symbolS *sym; + bfd_vma align; +{ + S_SET_ALIGN (sym, align); +} + +int +elf_s_get_other (sym) + symbolS *sym; +{ + return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other; +} + +static void +elf_s_set_other (sym, other) + symbolS *sym; + int other; +{ + S_SET_OTHER (sym, other); +} + +static int +elf_sec_sym_ok_for_reloc (sec) + asection *sec; +{ + return obj_sec_sym_ok_for_reloc (sec); +} + void elf_file_symbol (s) - char *s; + const char *s; { symbolS *sym; sym = symbol_new (s, absolute_section, (valueT) 0, (struct frag *) 0); - sym->sy_frag = &zero_address_frag; - sym->bsym->flags |= BSF_FILE; + symbol_set_frag (sym, &zero_address_frag); + symbol_get_bfdsym (sym)->flags |= BSF_FILE; if (symbol_rootP != sym) { @@ -76,17 +277,29 @@ elf_file_symbol (s) verify_symbol_chain (symbol_rootP, symbol_lastP); #endif } + +#ifdef NEED_ECOFF_DEBUG + ecoff_new_file (s); +#endif } -static void -obj_elf_common (ignore) - int ignore; +static symbolS * +elf_common (is_common) + int is_common; { char *name; char c; char *p; - int temp, size; + offsetT temp, size, sign; symbolS *symbolP; + int have_align; + expressionS exp; + + if (flag_mri && is_common) + { + s_mri_common (0); + return NULL; + } name = input_line_pointer; c = get_symbol_end (); @@ -96,53 +309,61 @@ obj_elf_common (ignore) SKIP_WHITESPACE (); if (*input_line_pointer != ',') { - as_bad ("Expected comma after symbol-name"); + as_bad (_("expected comma after symbol-name")); ignore_rest_of_line (); - return; + return NULL; } input_line_pointer++; /* skip ',' */ - if ((temp = get_absolute_expression ()) < 0) + temp = get_absolute_expr (&exp); + sign = (offsetT) 1 << (stdoutput->arch_info->bits_per_address - 1); + size = temp & ((sign << 1) - 1); + if (temp != size || !exp.X_unsigned) { - as_bad (".COMMon length (%d.) <0! Ignored.", temp); + as_bad (_(".COMMon length (%ld) out of range, ignored."), (long) temp); ignore_rest_of_line (); - return; + return NULL; } - size = temp; *p = 0; symbolP = symbol_find_or_make (name); *p = c; - if (S_IS_DEFINED (symbolP)) + if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) { - as_bad ("Ignoring attempt to re-define symbol"); + as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); ignore_rest_of_line (); - return; + return NULL; } if (S_GET_VALUE (symbolP) != 0) { - if (S_GET_VALUE (symbolP) != size) + if (S_GET_VALUE (symbolP) != (valueT) size) { - as_warn ("Length of .comm \"%s\" is already %ld. Not changed to %d.", - S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); + as_warn (_("length of .comm \"%s\" is already %ld; not changed to %ld"), + S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), + (long) size); } } know (symbolP->sy_frag == &zero_address_frag); if (*input_line_pointer != ',') + have_align = 0; + else { - as_bad ("Expected comma after common length"); - ignore_rest_of_line (); - return; + have_align = 1; + input_line_pointer++; + SKIP_WHITESPACE (); } - input_line_pointer++; - SKIP_WHITESPACE (); - if (*input_line_pointer != '"') + if (! have_align || *input_line_pointer != '"') { - temp = get_absolute_expression (); - if (temp < 0) + if (! have_align) + temp = 0; + else { - temp = 0; - as_warn ("Common alignment negative; 0 assumed"); + temp = get_absolute_expr (&exp); + if (!exp.X_unsigned) + { + temp = 0; + as_warn (_("common alignment negative; 0 assumed")); + } } - if (symbolP->local) + if (symbol_get_obj (symbolP)->local) { segT old_sec; int old_subsec; @@ -152,17 +373,30 @@ obj_elf_common (ignore) /* allocate_bss: */ old_sec = now_seg; old_subsec = now_subseg; - align = temp; + if (temp) + { + /* convert to a power of 2 alignment */ + for (align = 0; (temp & 1) == 0; temp >>= 1, ++align); + if (temp != 1) + { + as_bad (_("common alignment not a power of 2")); + ignore_rest_of_line (); + return NULL; + } + } + else + align = 0; record_alignment (bss_section, align); subseg_set (bss_section, 0); if (align) - frag_align (align, 0); + frag_align (align, 0, 0); if (S_GET_SEGMENT (symbolP) == bss_section) - symbolP->sy_frag->fr_symbol = 0; - symbolP->sy_frag = frag_now; - pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, - (char *) 0); + symbol_get_frag (symbolP)->fr_symbol = 0; + symbol_set_frag (symbolP, frag_now); + pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, + (offsetT) size, (char *) 0); *pfrag = 0; + S_SET_SIZE (symbolP, size); S_SET_SEGMENT (symbolP, bss_section); S_CLEAR_EXTERNAL (symbolP); subseg_set (old_sec, old_subsec); @@ -171,9 +405,9 @@ obj_elf_common (ignore) { allocate_common: S_SET_VALUE (symbolP, (valueT) size); + S_SET_ALIGN (symbolP, temp); S_SET_EXTERNAL (symbolP); - /* should be common, but this is how gas does it for now */ - S_SET_SEGMENT (symbolP, &bfd_und_section); + S_SET_SEGMENT (symbolP, bfd_com_section_ptr); } } else @@ -195,8 +429,11 @@ obj_elf_common (ignore) ; goto allocate_common; } + + symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; + demand_empty_rest_of_line (); - return; + return symbolP; { bad_common_segment: @@ -205,17 +442,34 @@ obj_elf_common (ignore) p++; c = *p; *p = '\0'; - as_bad ("bad .common segment %s", input_line_pointer + 1); + as_bad (_("bad .common segment %s"), input_line_pointer + 1); *p = c; input_line_pointer = p; ignore_rest_of_line (); - return; + return NULL; } } -static void +void +obj_elf_common (is_common) + int is_common; +{ + elf_common (is_common); +} + +static void +obj_elf_tls_common (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + symbolS *symbolP = elf_common (0); + + if (symbolP) + symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL; +} + +static void obj_elf_local (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { char *name; int c; @@ -229,7 +483,7 @@ obj_elf_local (ignore) *input_line_pointer = c; SKIP_WHITESPACE (); S_CLEAR_EXTERNAL (symbolP); - symbolP->local = 1; + symbol_get_obj (symbolP)->local = 1; if (c == ',') { input_line_pointer++; @@ -242,9 +496,9 @@ obj_elf_local (ignore) demand_empty_rest_of_line (); } -static void +static void obj_elf_weak (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { char *name; int c; @@ -258,7 +512,7 @@ obj_elf_weak (ignore) *input_line_pointer = c; SKIP_WHITESPACE (); S_SET_WEAK (symbolP); - symbolP->local = 1; + symbol_get_obj (symbolP)->local = 1; if (c == ',') { input_line_pointer++; @@ -271,262 +525,986 @@ obj_elf_weak (ignore) demand_empty_rest_of_line (); } -static segT previous_section; -static int previous_subsection; - -void -obj_elf_section (xxx) - int xxx; +static void +obj_elf_visibility (visibility) + int visibility; { - char *string; - asection *sec; - - /* Initialize this with inclusive-or of all flags that can be cleared - by attributes, but not set by them. Also include flags that won't - get set properly in the assembler, but which the user/compiler - shouldn't be expected to set. */ - flagword flags = SEC_READONLY | SEC_ALLOC | SEC_RELOC; - /* Initialize this with the default flags to be used if none are - specified. */ - flagword default_flags = 0; + char *name; + int c; + symbolS *symbolP; + asymbol *bfdsym; + elf_symbol_type *elfsym; - SKIP_WHITESPACE (); - /* Get name of section. */ - if (*input_line_pointer == '"') - string = demand_copy_C_string (&xxx); - else + do { - char *p = input_line_pointer; - char c; - while (0 == strchr ("\n\t,; ", *p)) - p++; - c = *p; - *p = 0; - string = xmalloc ((unsigned long) (p - input_line_pointer + 1)); - strcpy (string, input_line_pointer); - *p = c; - input_line_pointer = p; - } - if (!strcmp (string, ".rodata")) - default_flags = SEC_ALLOC | SEC_READONLY | SEC_RELOC | SEC_LOAD; - else if (!strcmp (string, ".init") - || !strcmp (string, ".fini")) - default_flags = SEC_ALLOC | SEC_READONLY | SEC_RELOC | SEC_CODE | SEC_LOAD; + name = input_line_pointer; + c = get_symbol_end (); + symbolP = symbol_find_or_make (name); + *input_line_pointer = c; - SKIP_WHITESPACE (); - if (*input_line_pointer != ',') - flags = default_flags; - while (*input_line_pointer == ',') - { - flagword bit; - unsigned int len; - int inv; - char *p, oldp; + SKIP_WHITESPACE (); - input_line_pointer++; + bfdsym = symbol_get_bfdsym (symbolP); + elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); - /* Under i386-svr4, gcc emits a string here. I don't know what this - string is supposed to signify or how to handle it. Ignore it for - now, unless it becomes a problem. */ - if (*input_line_pointer == '"') + assert (elfsym); + + elfsym->internal_elf_sym.st_other &= ~3; + elfsym->internal_elf_sym.st_other |= visibility; + + if (c == ',') { - demand_copy_C_string (&xxx); + input_line_pointer ++; + SKIP_WHITESPACE (); - continue; - } - if (*input_line_pointer != '#' && *input_line_pointer != '@') - { - as_bad ("unrecognized syntax in .section command"); - ignore_rest_of_line (); - break; + if (*input_line_pointer == '\n') + c = '\n'; } - input_line_pointer++; + } + while (c == ','); + + demand_empty_rest_of_line (); +} -#define CHECK(X,BIT,NEG) \ - if (!strncmp(X,input_line_pointer,len = sizeof(X) - 1)) { \ - bit = BIT; inv = NEG; goto match; } +static segT previous_section; +static int previous_subsection; - CHECK ("write", SEC_READONLY, 1); - CHECK ("alloc", SEC_ALLOC, 0); - CHECK ("execinstr", SEC_CODE, 1); - CHECK ("progbits", SEC_LOAD, 1); -#undef CHECK +struct section_stack +{ + struct section_stack *next; + segT seg, prev_seg; + int subseg, prev_subseg; +}; - p = input_line_pointer; - while (!is_end_of_line[(unsigned char) *p] && *p != 0 && *p != ',') - p++; - *p = 0; - oldp = *p; - as_bad ("unrecognized section attribute `%s' ignored", - input_line_pointer); - *p = oldp; - continue; - - match: - if (inv) - flags &= ~bit; - else - flags |= bit; - input_line_pointer += len; - } - demand_empty_rest_of_line (); +static struct section_stack *section_stack; + +/* Handle the .section pseudo-op. This code supports two different + syntaxes. + + The first is found on Solaris, and looks like + .section ".sec1",#alloc,#execinstr,#write + Here the names after '#' are the SHF_* flags to turn on for the + section. I'm not sure how it determines the SHT_* type (BFD + doesn't really give us control over the type, anyhow). + + The second format is found on UnixWare, and probably most SVR4 + machines, and looks like + .section .sec1,"a",@progbits + The quoted string may contain any combination of a, w, x, and + represents the SHF_* flags to turn on for the section. The string + beginning with '@' can be progbits or nobits. There should be + other possibilities, but I don't know what they are. In any case, + BFD doesn't really let us set the section type. */ + +/* Certain named sections have particular defined types, listed on p. + 4-19 of the ABI. */ +struct special_section +{ + const char *name; + int type; + int attributes; +}; - /* If the C string wasn't valid, `string' could be null. */ - if (!string) - return; +static struct special_section const special_sections[] = +{ + { ".bss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, + { ".comment", SHT_PROGBITS, 0 }, + { ".data", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, + { ".data1", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, + { ".debug", SHT_PROGBITS, 0 }, +#if defined (TC_HPPA) && !defined (TE_LINUX) && TARGET_ARCH_SIZE == 64 + { ".fini", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, + { ".init", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, +#else + { ".fini", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + { ".init", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, +#endif + { ".line", SHT_PROGBITS, 0 }, + { ".note", SHT_NOTE, 0 }, + { ".rodata", SHT_PROGBITS, SHF_ALLOC }, + { ".rodata1", SHT_PROGBITS, SHF_ALLOC }, + { ".tbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, + { ".tdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS }, + { ".text", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + { ".init_array",SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE }, + { ".fini_array",SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE }, + { ".preinit_array",SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE }, + +#ifdef ELF_TC_SPECIAL_SECTIONS + ELF_TC_SPECIAL_SECTIONS +#endif - sec = bfd_get_section_by_name (stdoutput, string); - if (sec == 0) +#if 0 + /* The following section names are special, but they can not + reasonably appear in assembler code. Some of the attributes are + processor dependent. */ + { ".dynamic", SHT_DYNAMIC, SHF_ALLOC /* + SHF_WRITE */ }, + { ".dynstr", SHT_STRTAB, SHF_ALLOC }, + { ".dynsym", SHT_DYNSYM, SHF_ALLOC }, + { ".got", SHT_PROGBITS, 0 }, + { ".hash", SHT_HASH, SHF_ALLOC }, + { ".interp", SHT_PROGBITS, /* SHF_ALLOC */ }, + { ".plt", SHT_PROGBITS, 0 }, + { ".shstrtab",SHT_STRTAB, 0 }, + { ".strtab", SHT_STRTAB, /* SHF_ALLOC */ }, + { ".symtab", SHT_SYMTAB, /* SHF_ALLOC */ }, +#endif + + { NULL, 0, 0 } +}; + +void +obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push) + const char *name; + int type; + int attr; + int entsize; + const char *group_name; + int linkonce; + int push; +{ + asection *old_sec; + segT sec; + flagword flags; + int i; + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + /* Switch to the section, creating it if necessary. */ + if (push) { - sec = subseg_new (string, 0); - bfd_set_section_flags (stdoutput, sec, flags); - sec->output_section = sec; + struct section_stack *elt; + elt = xmalloc (sizeof (struct section_stack)); + elt->next = section_stack; + elt->seg = now_seg; + elt->prev_seg = previous_section; + elt->subseg = now_subseg; + elt->prev_subseg = previous_subsection; + section_stack = elt; } previous_section = now_seg; previous_subsection = now_subseg; - subseg_set (sec, 0); -} -void -obj_elf_previous (ignore) - int ignore; -{ - if (previous_section == 0) + old_sec = bfd_get_section_by_name (stdoutput, name); + sec = subseg_new (name, 0); + + /* See if this is one of the special sections. */ + for (i = 0; special_sections[i].name != NULL; i++) + if (strcmp (name, special_sections[i].name) == 0) + { + if (type == SHT_NULL) + type = special_sections[i].type; + else if (type != special_sections[i].type) + { + if (old_sec == NULL + /* FIXME: gcc, as of 2002-10-22, will emit + + .section .init_array,"aw",@progbits + + for __attribute__ ((section (".init_array"))). + "@progbits" is incorrect. */ + && special_sections[i].type != SHT_INIT_ARRAY + && special_sections[i].type != SHT_FINI_ARRAY + && special_sections[i].type != SHT_PREINIT_ARRAY) + { + as_warn (_("setting incorrect section type for %s"), name); + } + else + { + as_warn (_("ignoring incorrect section type for %s"), name); + type = special_sections[i].type; + } + } + if ((attr &~ special_sections[i].attributes) != 0 + && old_sec == NULL) + { + /* As a GNU extension, we permit a .note section to be + allocatable. If the linker sees an allocateable .note + section, it will create a PT_NOTE segment in the output + file. */ + if (strcmp (name, ".note") != 0 + || attr != SHF_ALLOC) + as_warn (_("setting incorrect section attributes for %s"), + name); + } + attr |= special_sections[i].attributes; + break; + } + + /* Convert ELF type and flags to BFD flags. */ + flags = (SEC_RELOC + | ((attr & SHF_WRITE) ? 0 : SEC_READONLY) + | ((attr & SHF_ALLOC) ? SEC_ALLOC : 0) + | (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0) + | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0) + | ((attr & SHF_MERGE) ? SEC_MERGE : 0) + | ((attr & SHF_STRINGS) ? SEC_STRINGS : 0) + | ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0)); +#ifdef md_elf_section_flags + flags = md_elf_section_flags (flags, attr, type); +#endif + + if (old_sec == NULL) { - as_bad (".previous without corresponding .section; ignored"); - return; + symbolS *secsym; + + /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ + if (type == SHT_NOBITS) + seg_info (sec)->bss = 1; + + if (linkonce) + flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; + bfd_set_section_flags (stdoutput, sec, flags); + if (flags & SEC_MERGE) + sec->entsize = entsize; + elf_group_name (sec) = group_name; + + /* Add a symbol for this section to the symbol table. */ + secsym = symbol_find (name); + if (secsym != NULL) + symbol_set_bfdsym (secsym, sec->symbol); + else + symbol_table_insert (section_symbol (sec)); } - subseg_set (previous_section, previous_subsection); - previous_section = 0; + else if (attr != 0) + { + /* If section attributes are specified the second time we see a + particular section, then check that they are the same as we + saw the first time. */ + if (((old_sec->flags ^ flags) + & (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE + | SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS + | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD + | SEC_THREAD_LOCAL))) + as_warn (_("ignoring changed section attributes for %s"), name); + if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize) + as_warn (_("ignoring changed section entity size for %s"), name); + if ((attr & SHF_GROUP) != 0 + && strcmp (elf_group_name (old_sec), group_name) != 0) + as_warn (_("ignoring new section group for %s"), name); + } + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif } static int -obj_elf_write_symbol_p (sym) - symbolS *sym; +obj_elf_parse_section_letters (str, len) + char *str; + size_t len; { - /* If this is a local symbol, are there any relocations for which - need this symbol? */ - - /* To find this out, we examine all relocations in all bfd sections - that have relocations. If there is one that references this - symbol, we need to keep this symbol. In this case, we return a - true status. In all other cases, we return a false status. */ + int attr = 0; - if (S_IS_LOCAL (sym)) + while (len > 0) { - asymbol *bsym = sym->bsym; - bfd *abfd = bsym->the_bfd; - asection *bsec; - - for (bsec = abfd->sections; bsec; bsec = bsec->next) + switch (*str) { - struct reloc_cache_entry **rlocs = bsec->orelocation; - int rcnt = bsec->reloc_count; - - if (rlocs) - { - int i; - - for (i = 0; i < rcnt; i++) - if (rlocs[i]->sym_ptr_ptr - && rlocs[i]->sym_ptr_ptr[0] == bsym) - return 1; - } - else + case 'a': + attr |= SHF_ALLOC; + break; + case 'w': + attr |= SHF_WRITE; + break; + case 'x': + attr |= SHF_EXECINSTR; + break; + case 'M': + attr |= SHF_MERGE; + break; + case 'S': + attr |= SHF_STRINGS; + break; + case 'G': + attr |= SHF_GROUP; + break; + case 'T': + attr |= SHF_TLS; + break; + /* Compatibility. */ + case 'm': + if (*(str - 1) == 'a') { - /* No relocations for this section. Check the seg_info - structure to see if there are any fixups for this - section. */ - segment_info_type *seginfo = seg_info (bsec); - fixS *fixp; - - for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) - if ((fixp->fx_addsy && fixp->fx_addsy->bsym == bsym) - || (fixp->fx_subsy && fixp->fx_subsy->bsym == bsym)) - return 1; + attr |= SHF_MERGE; + if (len > 1 && str[1] == 's') + { + attr |= SHF_STRINGS; + str++, len--; + } + break; } + default: + { + char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T"); +#ifdef md_elf_section_letter + int md_attr = md_elf_section_letter (*str, &bad_msg); + if (md_attr >= 0) + attr |= md_attr; + else +#endif + { + as_warn ("%s", bad_msg); + attr = -1; + } + } + break; } + str++, len--; } - return 0; -} -int -obj_elf_write_symbol (sym) - symbolS *sym; -{ - return /* obj_elf_write_symbol_p (sym) || */ !S_IS_LOCAL (sym); + return attr; } -int -obj_elf_frob_symbol (sym, punt) - symbolS *sym; - int *punt; +static int +obj_elf_section_word (str, len) + char *str; + size_t len; { -#if 0 /* ?? The return value is ignored. Only the value of *punt is - relevant. */ - return obj_elf_write_symbol_p (sym); + if (len == 5 && strncmp (str, "write", 5) == 0) + return SHF_WRITE; + if (len == 5 && strncmp (str, "alloc", 5) == 0) + return SHF_ALLOC; + if (len == 9 && strncmp (str, "execinstr", 9) == 0) + return SHF_EXECINSTR; + if (len == 3 && strncmp (str, "tls", 3) == 0) + return SHF_TLS; + +#ifdef md_elf_section_word + { + int md_attr = md_elf_section_word (str, len); + if (md_attr >= 0) + return md_attr; + } #endif - /* FIXME: Just return 0 until is fixed. */ - return 0; -} - -static void -obj_elf_line (ignore) - int ignore; -{ - /* Assume delimiter is part of expression. BSD4.2 as fails with - delightful bug, so we are not being incompatible here. */ - new_logical_line ((char *) NULL, (int) (get_absolute_expression ())); - demand_empty_rest_of_line (); -} -void -obj_read_begin_hook () -{ + as_warn (_("unrecognized section attribute")); + return 0; } -void -obj_symbol_new_hook (symbolP) - symbolS *symbolP; +static int +obj_elf_section_type (str, len) + char *str; + size_t len; { -#if 0 /* BFD already takes care of this */ - elf32_symbol_type *esym = (elf32_symbol_type *) symbolP; + if (len == 8 && strncmp (str, "progbits", 8) == 0) + return SHT_PROGBITS; + if (len == 6 && strncmp (str, "nobits", 6) == 0) + return SHT_NOBITS; - /* There is an Elf_Internal_Sym and an Elf_External_Sym. For now, - just zero them out. */ - - bzero ((char *) &esym->internal_elf_sym, sizeof (esym->internal_elf_sym)); - bzero ((char *) &esym->native_elf_sym, sizeof (esym->native_elf_sym)); - bzero ((char *) &esym->tc_data, sizeof (esym->tc_data)); +#ifdef md_elf_section_type + { + int md_type = md_elf_section_type (str, len); + if (md_type >= 0) + return md_type; + } #endif + + as_warn (_("unrecognized section type")); + return 0; } -void -obj_elf_version (ignore) - int ignore; +/* Get name of section. */ +static char * +obj_elf_section_name () { char *name; - unsigned int c; - char ch; - char *p; - asection *seg = now_seg; - subsegT subseg = now_subseg; - Elf_Internal_Note i_note; - Elf_External_Note e_note; - asection *note_secp = (asection *) NULL; - int i, len; SKIP_WHITESPACE (); - if (*input_line_pointer == '\"') + if (*input_line_pointer == '"') { - ++input_line_pointer; /* -> 1st char of string. */ - name = input_line_pointer; + int dummy; - while (is_a_char (c = next_char_of_string ())) - ; - c = *input_line_pointer; - *input_line_pointer = '\0'; + name = demand_copy_C_string (&dummy); + if (name == NULL) + { + ignore_rest_of_line (); + return NULL; + } + } + else + { + char *end = input_line_pointer; + + while (0 == strchr ("\n\t,; ", *end)) + end++; + if (end == input_line_pointer) + { + as_warn (_("missing name")); + ignore_rest_of_line (); + return NULL; + } + + name = xmalloc (end - input_line_pointer + 1); + memcpy (name, input_line_pointer, end - input_line_pointer); + name[end - input_line_pointer] = '\0'; +#ifdef tc_canonicalize_section_name + name = tc_canonicalize_section_name (name); +#endif + input_line_pointer = end; + } + SKIP_WHITESPACE (); + return name; +} + +void +obj_elf_section (push) + int push; +{ + char *name, *group_name, *beg; + int type, attr, dummy; + int entsize; + int linkonce; + +#ifndef TC_I370 + if (flag_mri) + { + char mri_type; + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + previous_section = now_seg; + previous_subsection = now_subseg; + + s_mri_sect (&mri_type); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif + + return; + } +#endif /* ! defined (TC_I370) */ + + name = obj_elf_section_name (); + if (name == NULL) + return; + type = SHT_NULL; + attr = 0; + group_name = NULL; + entsize = 0; + linkonce = 0; + + if (*input_line_pointer == ',') + { + /* Skip the comma. */ + ++input_line_pointer; + SKIP_WHITESPACE (); + + if (*input_line_pointer == '"') + { + beg = demand_copy_C_string (&dummy); + if (beg == NULL) + { + ignore_rest_of_line (); + return; + } + attr |= obj_elf_parse_section_letters (beg, strlen (beg)); + + SKIP_WHITESPACE (); + if (*input_line_pointer == ',') + { + char c; + char *save = input_line_pointer; + + ++input_line_pointer; + SKIP_WHITESPACE (); + c = *input_line_pointer; + if (c == '"') + { + beg = demand_copy_C_string (&dummy); + if (beg == NULL) + { + ignore_rest_of_line (); + return; + } + type = obj_elf_section_type (beg, strlen (beg)); + } + else if (c == '@' || c == '%') + { + beg = ++input_line_pointer; + c = get_symbol_end (); + *input_line_pointer = c; + type = obj_elf_section_type (beg, input_line_pointer - beg); + } + else + input_line_pointer = save; + } + + SKIP_WHITESPACE (); + if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',') + { + ++input_line_pointer; + SKIP_WHITESPACE (); + entsize = get_absolute_expression (); + SKIP_WHITESPACE (); + if (entsize < 0) + { + as_warn (_("invalid merge entity size")); + attr &= ~SHF_MERGE; + entsize = 0; + } + } + else if ((attr & SHF_MERGE) != 0) + { + as_warn (_("entity size for SHF_MERGE not specified")); + attr &= ~SHF_MERGE; + } + + if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',') + { + ++input_line_pointer; + group_name = obj_elf_section_name (); + if (group_name == NULL) + attr &= ~SHF_GROUP; + else if (strncmp (input_line_pointer, ",comdat", 7) == 0) + { + input_line_pointer += 7; + linkonce = 1; + } + else if (strncmp (name, ".gnu.linkonce", 13) == 0) + linkonce = 1; + } + else if ((attr & SHF_GROUP) != 0) + { + as_warn (_("group name for SHF_GROUP not specified")); + attr &= ~SHF_GROUP; + } + } + else + { + do + { + char c; + + SKIP_WHITESPACE (); + if (*input_line_pointer != '#') + { + as_warn (_("character following name is not '#'")); + ignore_rest_of_line (); + return; + } + beg = ++input_line_pointer; + c = get_symbol_end (); + *input_line_pointer = c; + + attr |= obj_elf_section_word (beg, input_line_pointer - beg); + + SKIP_WHITESPACE (); + } + while (*input_line_pointer++ == ','); + --input_line_pointer; + } + } + + demand_empty_rest_of_line (); + + obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push); +} + +/* Change to the .data section. */ + +void +obj_elf_data (i) + int i; +{ +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + previous_section = now_seg; + previous_subsection = now_subseg; + s_data (i); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +/* Change to the .text section. */ + +void +obj_elf_text (i) + int i; +{ +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + previous_section = now_seg; + previous_subsection = now_subseg; + s_text (i); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +static void +obj_elf_subsection (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + register int temp; + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + previous_section = now_seg; + previous_subsection = now_subseg; + + temp = get_absolute_expression (); + subseg_set (now_seg, (subsegT) temp); + demand_empty_rest_of_line (); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +/* This can be called from the processor backends if they change + sections. */ + +void +obj_elf_section_change_hook () +{ + previous_section = now_seg; + previous_subsection = now_subseg; +} + +void +obj_elf_previous (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + segT new_section; + int new_subsection; + + if (previous_section == 0) + { + as_warn (_(".previous without corresponding .section; ignored")); + return; + } + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + new_section = previous_section; + new_subsection = previous_subsection; + previous_section = now_seg; + previous_subsection = now_subseg; + subseg_set (new_section, new_subsection); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +static void +obj_elf_popsection (xxx) + int xxx ATTRIBUTE_UNUSED; +{ + struct section_stack *top = section_stack; + + if (top == NULL) + { + as_warn (_(".popsection without corresponding .pushsection; ignored")); + return; + } + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + section_stack = top->next; + previous_section = top->prev_seg; + previous_subsection = top->prev_subseg; + subseg_set (top->seg, top->subseg); + free (top); + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +static void +obj_elf_line (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + /* Assume delimiter is part of expression. BSD4.2 as fails with + delightful bug, so we are not being incompatible here. */ + new_logical_line ((char *) NULL, (int) (get_absolute_expression ())); + demand_empty_rest_of_line (); +} + +/* This handles the .symver pseudo-op, which is used to specify a + symbol version. The syntax is ``.symver NAME,SYMVERNAME''. + SYMVERNAME may contain ELF_VER_CHR ('@') characters. This + pseudo-op causes the assembler to emit a symbol named SYMVERNAME + with the same value as the symbol NAME. */ + +static void +obj_elf_symver (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + char *name; + char c; + char old_lexat; + symbolS *sym; + + name = input_line_pointer; + c = get_symbol_end (); + + sym = symbol_find_or_make (name); + + *input_line_pointer = c; + + SKIP_WHITESPACE (); + if (*input_line_pointer != ',') + { + as_bad (_("expected comma after name in .symver")); + ignore_rest_of_line (); + return; + } + + ++input_line_pointer; + SKIP_WHITESPACE (); + name = input_line_pointer; + + /* Temporarily include '@' in symbol names. */ + old_lexat = lex_type[(unsigned char) '@']; + lex_type[(unsigned char) '@'] |= LEX_NAME; + c = get_symbol_end (); + lex_type[(unsigned char) '@'] = old_lexat; + + if (symbol_get_obj (sym)->versioned_name == NULL) + { + symbol_get_obj (sym)->versioned_name = xstrdup (name); + + *input_line_pointer = c; + + if (strchr (symbol_get_obj (sym)->versioned_name, + ELF_VER_CHR) == NULL) + { + as_bad (_("missing version name in `%s' for symbol `%s'"), + symbol_get_obj (sym)->versioned_name, + S_GET_NAME (sym)); + ignore_rest_of_line (); + return; + } + } + else + { + if (strcmp (symbol_get_obj (sym)->versioned_name, name)) + { + as_bad (_("multiple versions [`%s'|`%s'] for symbol `%s'"), + name, symbol_get_obj (sym)->versioned_name, + S_GET_NAME (sym)); + ignore_rest_of_line (); + return; + } + + *input_line_pointer = c; + } + + demand_empty_rest_of_line (); +} + +/* This handles the .vtable_inherit pseudo-op, which is used to indicate + to the linker the hierarchy in which a particular table resides. The + syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */ + +struct fix * +obj_elf_vtable_inherit (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + char *cname, *pname; + symbolS *csym, *psym; + char c, bad = 0; + + if (*input_line_pointer == '#') + ++input_line_pointer; + + cname = input_line_pointer; + c = get_symbol_end (); + csym = symbol_find (cname); + + /* GCFIXME: should check that we don't have two .vtable_inherits for + the same child symbol. Also, we can currently only do this if the + child symbol is already exists and is placed in a fragment. */ + + if (csym == NULL || symbol_get_frag (csym) == NULL) + { + as_bad ("expected `%s' to have already been set for .vtable_inherit", + cname); + bad = 1; + } + + *input_line_pointer = c; + + SKIP_WHITESPACE (); + if (*input_line_pointer != ',') + { + as_bad ("expected comma after name in .vtable_inherit"); + ignore_rest_of_line (); + return NULL; + } + + ++input_line_pointer; + SKIP_WHITESPACE (); + + if (*input_line_pointer == '#') + ++input_line_pointer; + + if (input_line_pointer[0] == '0' + && (input_line_pointer[1] == '\0' + || ISSPACE (input_line_pointer[1]))) + { + psym = section_symbol (absolute_section); + ++input_line_pointer; + } + else + { + pname = input_line_pointer; + c = get_symbol_end (); + psym = symbol_find_or_make (pname); + *input_line_pointer = c; + } + + demand_empty_rest_of_line (); + + if (bad) + return NULL; + + assert (symbol_get_value_expression (csym)->X_op == O_constant); + return fix_new (symbol_get_frag (csym), + symbol_get_value_expression (csym)->X_add_number, + 0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT); +} + +/* This handles the .vtable_entry pseudo-op, which is used to indicate + to the linker that a vtable slot was used. The syntax is + ".vtable_entry tablename, offset". */ + +struct fix * +obj_elf_vtable_entry (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + char *name; + symbolS *sym; + offsetT offset; + char c; + + if (*input_line_pointer == '#') + ++input_line_pointer; + + name = input_line_pointer; + c = get_symbol_end (); + sym = symbol_find_or_make (name); + *input_line_pointer = c; + + SKIP_WHITESPACE (); + if (*input_line_pointer != ',') + { + as_bad ("expected comma after name in .vtable_entry"); + ignore_rest_of_line (); + return NULL; + } + + ++input_line_pointer; + if (*input_line_pointer == '#') + ++input_line_pointer; + + offset = get_absolute_expression (); + + demand_empty_rest_of_line (); + + return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, + BFD_RELOC_VTABLE_ENTRY); +} + +void +elf_obj_read_begin_hook () +{ +#ifdef NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + ecoff_read_begin_hook (); +#endif +} + +void +elf_obj_symbol_new_hook (symbolP) + symbolS *symbolP; +{ + struct elf_obj_sy *sy_obj; + + sy_obj = symbol_get_obj (symbolP); + sy_obj->size = NULL; + sy_obj->versioned_name = NULL; + +#ifdef NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + ecoff_symbol_new_hook (symbolP); +#endif +} + +/* When setting one symbol equal to another, by default we probably + want them to have the same "size", whatever it means in the current + context. */ + +void +elf_copy_symbol_attributes (dest, src) + symbolS *dest, *src; +{ + struct elf_obj_sy *srcelf = symbol_get_obj (src); + struct elf_obj_sy *destelf = symbol_get_obj (dest); + if (srcelf->size) + { + if (destelf->size == NULL) + destelf->size = + (expressionS *) xmalloc (sizeof (expressionS)); + *destelf->size = *srcelf->size; + } + else + { + if (destelf->size != NULL) + free (destelf->size); + destelf->size = NULL; + } + S_SET_SIZE (dest, S_GET_SIZE (src)); + /* Don't copy visibility. */ + S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest)) + | (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1)))); +} + +void +obj_elf_version (ignore) + int ignore ATTRIBUTE_UNUSED; +{ + char *name; + unsigned int c; + char *p; + asection *seg = now_seg; + subsegT subseg = now_subseg; + Elf_Internal_Note i_note; + Elf_External_Note e_note; + asection *note_secp = (asection *) NULL; + int len; + + SKIP_WHITESPACE (); + if (*input_line_pointer == '\"') + { + ++input_line_pointer; /* -> 1st char of string. */ + name = input_line_pointer; + + while (is_a_char (c = next_char_of_string ())) + ; + c = *input_line_pointer; + *input_line_pointer = '\0'; *(input_line_pointer - 1) = '\0'; *input_line_pointer = c; @@ -545,33 +1523,28 @@ obj_elf_version (ignore) i_note.descsz = 0; /* no description */ i_note.type = NT_VERSION; p = frag_more (sizeof (e_note.namesz)); - md_number_to_chars (p, (valueT) i_note.namesz, 4); + md_number_to_chars (p, (valueT) i_note.namesz, sizeof (e_note.namesz)); p = frag_more (sizeof (e_note.descsz)); - md_number_to_chars (p, (valueT) i_note.descsz, 4); + md_number_to_chars (p, (valueT) i_note.descsz, sizeof (e_note.descsz)); p = frag_more (sizeof (e_note.type)); - md_number_to_chars (p, (valueT) i_note.type, 4); + md_number_to_chars (p, (valueT) i_note.type, sizeof (e_note.type)); + p = frag_more (len + 1); + strcpy (p, name); - for (i = 0; i < len; i++) - { - ch = *(name + i); - { - FRAG_APPEND_1_CHAR (ch); - } - } - frag_align (2, 0); + frag_align (2, 0, 0); subseg_set (seg, subseg); } else { - as_bad ("Expected quoted string"); + as_bad (_("expected quoted string")); } demand_empty_rest_of_line (); } static void obj_elf_size (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { char *name = input_line_pointer; char c = get_symbol_end (); @@ -585,7 +1558,7 @@ obj_elf_size (ignore) if (*input_line_pointer != ',') { *p = 0; - as_bad ("expected comma after name `%s' in .size directive", name); + as_bad (_("expected comma after name `%s' in .size directive"), name); *p = c; ignore_rest_of_line (); return; @@ -594,7 +1567,7 @@ obj_elf_size (ignore) expression (&exp); if (exp.X_op == O_absent) { - as_bad ("missing expression in .size directive"); + as_bad (_("missing expression in .size directive")); exp.X_op = O_constant; exp.X_add_number = 0; } @@ -602,82 +1575,114 @@ obj_elf_size (ignore) sym = symbol_find_or_make (name); *p = c; if (exp.X_op == O_constant) - S_SET_SIZE (sym, exp.X_add_number); - else { -#if 0 - static int warned; - if (!warned) + S_SET_SIZE (sym, exp.X_add_number); + if (symbol_get_obj (sym)->size) { - as_tsktsk (".size expressions not yet supported, ignored"); - warned++; + xfree (symbol_get_obj (sym)->size); + symbol_get_obj (sym)->size = NULL; } -#endif + } + else + { + symbol_get_obj (sym)->size = + (expressionS *) xmalloc (sizeof (expressionS)); + *symbol_get_obj (sym)->size = exp; } demand_empty_rest_of_line (); } +/* Handle the ELF .type pseudo-op. This sets the type of a symbol. + There are five syntaxes: + + The first (used on Solaris) is + .type SYM,#function + The second (used on UnixWare) is + .type SYM,@function + The third (reportedly to be used on Irix 6.0) is + .type SYM STT_FUNC + The fourth (used on NetBSD/Arm and Linux/ARM) is + .type SYM,%function + The fifth (used on SVR4/860) is + .type SYM,"function" + */ + static void obj_elf_type (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { - char *name = input_line_pointer; - char c = get_symbol_end (); - char *p; - int type = 0; + char *name; + char c; + int type; + const char *typename; symbolS *sym; + elf_symbol_type *elfsym; + + name = input_line_pointer; + c = get_symbol_end (); + sym = symbol_find_or_make (name); + elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym); + *input_line_pointer = c; - p = input_line_pointer; - *p = c; SKIP_WHITESPACE (); - if (*input_line_pointer != ',') - { - as_bad ("expected comma after name in .type directive"); - egress: - ignore_rest_of_line (); - return; - } - input_line_pointer++; + if (*input_line_pointer == ',') + ++input_line_pointer; + SKIP_WHITESPACE (); - if (*input_line_pointer != '#' && *input_line_pointer != '@') - { - as_bad ("expected `#' or `@' after comma in .type directive"); - goto egress; - } - input_line_pointer++; - if (!strncmp ("function", input_line_pointer, sizeof ("function") - 1)) - { - type = BSF_FUNCTION; - input_line_pointer += sizeof ("function") - 1; - } - else if (!strncmp ("object", input_line_pointer, sizeof ("object") - 1)) - { - input_line_pointer += sizeof ("object") - 1; - } + if ( *input_line_pointer == '#' + || *input_line_pointer == '@' + || *input_line_pointer == '"' + || *input_line_pointer == '%') + ++input_line_pointer; + + typename = input_line_pointer; + c = get_symbol_end (); + + type = 0; + if (strcmp (typename, "function") == 0 + || strcmp (typename, "STT_FUNC") == 0) + type = BSF_FUNCTION; + else if (strcmp (typename, "object") == 0 + || strcmp (typename, "STT_OBJECT") == 0) + type = BSF_OBJECT; + else if (strcmp (typename, "tls_object") == 0 + || strcmp (typename, "STT_TLS") == 0) + type = BSF_OBJECT | BSF_THREAD_LOCAL; +#ifdef md_elf_symbol_type + else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1) + ; +#endif else - { - as_bad ("unrecognized symbol type, ignored"); - goto egress; - } + as_bad (_("unrecognized symbol type \"%s\""), typename); + + *input_line_pointer = c; + + if (*input_line_pointer == '"') + ++input_line_pointer; + + elfsym->symbol.flags |= type; + demand_empty_rest_of_line (); - *p = 0; - sym = symbol_find_or_make (name); - sym->bsym->flags |= type; } static void obj_elf_ident (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { static segT comment_section; segT old_section = now_seg; int old_subsection = now_subseg; +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + if (!comment_section) { char *p; comment_section = subseg_new (".comment", 0); - bfd_set_section_flags (stdoutput, comment_section, SEC_HAS_CONTENTS); + bfd_set_section_flags (stdoutput, comment_section, + SEC_READONLY | SEC_HAS_CONTENTS); p = frag_more (1); *p = 0; } @@ -687,11 +1692,46 @@ obj_elf_ident (ignore) subseg_set (old_section, old_subsection); } +#ifdef INIT_STAB_SECTION + +/* The first entry in a .stabs section is special. */ + +void +obj_elf_init_stab_section (seg) + segT seg; +{ + char *file; + char *p; + char *stabstr_name; + unsigned int stroff; + + /* Force the section to align to a longword boundary. Without this, + UnixWare ar crashes. */ + bfd_set_section_alignment (stdoutput, seg, 2); + + /* Make space for this first symbol. */ + p = frag_more (12); + /* Zero it out. */ + memset (p, 0, 12); + as_where (&file, (unsigned int *) NULL); + stabstr_name = (char *) xmalloc (strlen (segment_name (seg)) + 4); + strcpy (stabstr_name, segment_name (seg)); + strcat (stabstr_name, "str"); + stroff = get_stab_string_offset (file, stabstr_name); + know (stroff == 1); + md_number_to_chars (p, stroff, 4); + seg_info (seg)->stabu.p = p; +} + +#endif + +/* Fill in the counts in the first entry in a .stabs section. */ + static void adjust_stab_sections (abfd, sec, xxx) bfd *abfd; asection *sec; - PTR xxx; + PTR xxx ATTRIBUTE_UNUSED; { char *name; asection *strsec; @@ -716,32 +1756,614 @@ adjust_stab_sections (abfd, sec, xxx) p = seg_info (sec)->stabu.p; assert (p != 0); - bfd_h_put_16 (abfd, (bfd_vma) nsyms, p + 6); - bfd_h_put_32 (abfd, (bfd_vma) strsz, p + 8); + bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6); + bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8); +} + +#ifdef NEED_ECOFF_DEBUG + +/* This function is called by the ECOFF code. It is supposed to + record the external symbol information so that the backend can + write it out correctly. The ELF backend doesn't actually handle + this at the moment, so we do it ourselves. We save the information + in the symbol. */ + +void +elf_ecoff_set_ext (sym, ext) + symbolS *sym; + struct ecoff_extr *ext; +{ + symbol_get_bfdsym (sym)->udata.p = (PTR) ext; +} + +/* This function is called by bfd_ecoff_debug_externals. It is + supposed to *EXT to the external symbol information, and return + whether the symbol should be used at all. */ + +static bfd_boolean +elf_get_extr (sym, ext) + asymbol *sym; + EXTR *ext; +{ + if (sym->udata.p == NULL) + return FALSE; + *ext = *(EXTR *) sym->udata.p; + return TRUE; +} + +/* This function is called by bfd_ecoff_debug_externals. It has + nothing to do for ELF. */ + +/*ARGSUSED*/ +static void +elf_set_index (sym, indx) + asymbol *sym ATTRIBUTE_UNUSED; + bfd_size_type indx ATTRIBUTE_UNUSED; +{ +} + +#endif /* NEED_ECOFF_DEBUG */ + +void +elf_frob_symbol (symp, puntp) + symbolS *symp; + int *puntp; +{ + struct elf_obj_sy *sy_obj; + +#ifdef NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + ecoff_frob_symbol (symp); +#endif + + sy_obj = symbol_get_obj (symp); + + if (sy_obj->size != NULL) + { + switch (sy_obj->size->X_op) + { + case O_subtract: + S_SET_SIZE (symp, + (S_GET_VALUE (sy_obj->size->X_add_symbol) + + sy_obj->size->X_add_number + - S_GET_VALUE (sy_obj->size->X_op_symbol))); + break; + case O_constant: + S_SET_SIZE (symp, + (S_GET_VALUE (sy_obj->size->X_add_symbol) + + sy_obj->size->X_add_number)); + break; + default: + as_bad (_(".size expression too complicated to fix up")); + break; + } + free (sy_obj->size); + sy_obj->size = NULL; + } + + if (sy_obj->versioned_name != NULL) + { + char *p; + + p = strchr (sy_obj->versioned_name, ELF_VER_CHR); + know (p != NULL); + + /* This symbol was given a new name with the .symver directive. + + If this is an external reference, just rename the symbol to + include the version string. This will make the relocs be + against the correct versioned symbol. + + If this is a definition, add an alias. FIXME: Using an alias + will permit the debugging information to refer to the right + symbol. However, it's not clear whether it is the best + approach. */ + + if (! S_IS_DEFINED (symp)) + { + /* Verify that the name isn't using the @@ syntax--this is + reserved for definitions of the default version to link + against. */ + if (p[1] == ELF_VER_CHR) + { + as_bad (_("invalid attempt to declare external version name as default in symbol `%s'"), + sy_obj->versioned_name); + *puntp = TRUE; + } + S_SET_NAME (symp, sy_obj->versioned_name); + } + else + { + if (p [1] == ELF_VER_CHR && p [2] == ELF_VER_CHR) + { + size_t l; + + /* The @@@ syntax is a special case. It renames the + symbol name to versioned_name with one `@' removed. */ + l = strlen (&p[3]) + 1; + memmove (&p [2], &p[3], l); + S_SET_NAME (symp, sy_obj->versioned_name); + } + else + { + symbolS *symp2; + + /* FIXME: Creating a new symbol here is risky. We're + in the final loop over the symbol table. We can + get away with it only because the symbol goes to + the end of the list, where the loop will still see + it. It would probably be better to do this in + obj_frob_file_before_adjust. */ + + symp2 = symbol_find_or_make (sy_obj->versioned_name); + + /* Now we act as though we saw symp2 = sym. */ + + S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp)); + + /* Subtracting out the frag address here is a hack + because we are in the middle of the final loop. */ + S_SET_VALUE (symp2, + (S_GET_VALUE (symp) + - symbol_get_frag (symp)->fr_address)); + + symbol_set_frag (symp2, symbol_get_frag (symp)); + + /* This will copy over the size information. */ + copy_symbol_attributes (symp2, symp); + + S_SET_OTHER (symp2, S_GET_OTHER (symp)); + + if (S_IS_WEAK (symp)) + S_SET_WEAK (symp2); + + if (S_IS_EXTERNAL (symp)) + S_SET_EXTERNAL (symp2); + } + } + } + + /* Double check weak symbols. */ + if (S_IS_WEAK (symp)) + { + if (S_IS_COMMON (symp)) + as_bad (_("symbol `%s' can not be both weak and common"), + S_GET_NAME (symp)); + } + +#ifdef TC_MIPS + /* The Irix 5 and 6 assemblers set the type of any common symbol and + any undefined non-function symbol to STT_OBJECT. We try to be + compatible, since newer Irix 5 and 6 linkers care. However, we + only set undefined symbols to be STT_OBJECT if we are on Irix, + because that is the only time gcc will generate the necessary + .global directives to mark functions. */ + + if (S_IS_COMMON (symp)) + symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; + + if (strstr (TARGET_OS, "irix") != NULL + && ! S_IS_DEFINED (symp) + && (symbol_get_bfdsym (symp)->flags & BSF_FUNCTION) == 0) + symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; +#endif + +#if 0 /* TC_PPC */ + /* If TC_PPC is defined, we used to force the type of a symbol to be + BSF_OBJECT if it was otherwise unset. This was required by some + version of VxWorks. Thomas de Lellis says + that this is no longer needed, so it is now commented out. */ + if ((symbol_get_bfdsym (symp)->flags + & (BSF_FUNCTION | BSF_FILE | BSF_SECTION_SYM)) == 0 + && S_IS_DEFINED (symp)) + symbol_get_bfdsym (symp)->flags |= BSF_OBJECT; +#endif +} + +struct group_list +{ + asection **head; /* Section lists. */ + unsigned int *elt_count; /* Number of sections in each list. */ + unsigned int num_group; /* Number of lists. */ +}; + +/* Called via bfd_map_over_sections. If SEC is a member of a group, + add it to a list of sections belonging to the group. INF is a + pointer to a struct group_list, which is where we store the head of + each list. */ + +static void +build_group_lists (abfd, sec, inf) + bfd *abfd ATTRIBUTE_UNUSED; + asection *sec; + PTR inf; +{ + struct group_list *list = (struct group_list *) inf; + const char *group_name = elf_group_name (sec); + unsigned int i; + + if (group_name == NULL) + return; + + /* If this group already has a list, add the section to the head of + the list. */ + for (i = 0; i < list->num_group; i++) + { + if (strcmp (group_name, elf_group_name (list->head[i])) == 0) + { + elf_next_in_group (sec) = list->head[i]; + list->head[i] = sec; + list->elt_count[i] += 1; + return; + } + } + + /* New group. Make the arrays bigger in chunks to minimize calls to + realloc. */ + i = list->num_group; + if ((i & 127) == 0) + { + unsigned int newsize = i + 128; + list->head = xrealloc (list->head, newsize * sizeof (*list->head)); + list->elt_count = xrealloc (list->elt_count, + newsize * sizeof (*list->elt_count)); + } + list->head[i] = sec; + list->elt_count[i] = 1; + list->num_group += 1; } -void +void elf_frob_file () { + struct group_list list; + unsigned int i; + bfd_map_over_sections (stdoutput, adjust_stab_sections, (PTR) 0); -#ifdef elf_tc_symbol - { - int i; + /* Go find section groups. */ + list.num_group = 0; + list.head = NULL; + list.elt_count = NULL; + bfd_map_over_sections (stdoutput, build_group_lists, (PTR) &list); + + /* Make the SHT_GROUP sections that describe each section group. We + can't set up the section contents here yet, because elf section + indices have yet to be calculated. elf.c:set_group_contents does + the rest of the work. */ + for (i = 0; i < list.num_group; i++) + { + const char *group_name = elf_group_name (list.head[i]); + const char *sec_name; + asection *s; + flagword flags; + struct symbol *sy; + int has_sym; + + flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP; + for (s = list.head[i]; s != NULL; s = elf_next_in_group (s)) + if ((s->flags ^ flags) & SEC_LINK_ONCE) + { + flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD; + if (s != list.head[i]) + { + as_warn (_("assuming all members of group `%s' are COMDAT"), + group_name); + break; + } + } - for (i = 0; i < stdoutput->symcount; i++) - elf_tc_symbol (stdoutput, (PTR) (stdoutput->outsymbols[i]), - i + 1); - } -#endif + sec_name = group_name; + sy = symbol_find_exact (group_name); + has_sym = 0; + if (sy != NULL + && (sy == symbol_lastP + || (sy->sy_next != NULL + && sy->sy_next->sy_previous == sy))) + { + has_sym = 1; + sec_name = ".group"; + } + s = subseg_force_new (sec_name, 0); + if (s == NULL + || !bfd_set_section_flags (stdoutput, s, flags) + || !bfd_set_section_alignment (stdoutput, s, 2)) + { + as_fatal (_("can't create group: %s"), + bfd_errmsg (bfd_get_error ())); + } + + /* Pass a pointer to the first section in this group. */ + elf_next_in_group (s) = list.head[i]; + if (has_sym) + elf_group_id (s) = sy->bsym; + + s->_raw_size = 4 * (list.elt_count[i] + 1); + s->contents = frag_more (s->_raw_size); + frag_now->fr_fix = frag_now_fix_octets (); + } #ifdef elf_tc_final_processing elf_tc_final_processing (); #endif +} - /* Finally, we must make any target-specific sections. */ +/* It removes any unneeded versioned symbols from the symbol table. */ -#ifdef elf_tc_make_sections - elf_tc_make_sections (stdoutput); +void +elf_frob_file_before_adjust () +{ + if (symbol_rootP) + { + symbolS *symp; + + for (symp = symbol_rootP; symp; symp = symbol_next (symp)) + if (!S_IS_DEFINED (symp)) + { + if (symbol_get_obj (symp)->versioned_name) + { + char *p; + + /* The @@@ syntax is a special case. If the symbol is + not defined, 2 `@'s will be removed from the + versioned_name. */ + + p = strchr (symbol_get_obj (symp)->versioned_name, + ELF_VER_CHR); + know (p != NULL); + if (p [1] == ELF_VER_CHR && p [2] == ELF_VER_CHR) + { + size_t l = strlen (&p[3]) + 1; + memmove (&p [1], &p[3], l); + } + if (symbol_used_p (symp) == 0 + && symbol_used_in_reloc_p (symp) == 0) + symbol_remove (symp, &symbol_rootP, &symbol_lastP); + } + + /* If there was .weak foo, but foo was neither defined nor + used anywhere, remove it. */ + + else if (S_IS_WEAK (symp) + && symbol_used_p (symp) == 0 + && symbol_used_in_reloc_p (symp) == 0) + symbol_remove (symp, &symbol_rootP, &symbol_lastP); + } + } +} + +/* It is required that we let write_relocs have the opportunity to + optimize away fixups before output has begun, since it is possible + to eliminate all fixups for a section and thus we never should + have generated the relocation section. */ + +void +elf_frob_file_after_relocs () +{ +#ifdef NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + /* Generate the ECOFF debugging information. */ + { + const struct ecoff_debug_swap *debug_swap; + struct ecoff_debug_info debug; + char *buf; + asection *sec; + + debug_swap + = get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap; + know (debug_swap != (const struct ecoff_debug_swap *) NULL); + ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap); + + /* Set up the pointers in debug. */ +#define SET(ptr, offset, type) \ + debug.ptr = (type) (buf + debug.symbolic_header.offset) + + SET (line, cbLineOffset, unsigned char *); + SET (external_dnr, cbDnOffset, PTR); + SET (external_pdr, cbPdOffset, PTR); + SET (external_sym, cbSymOffset, PTR); + SET (external_opt, cbOptOffset, PTR); + SET (external_aux, cbAuxOffset, union aux_ext *); + SET (ss, cbSsOffset, char *); + SET (external_fdr, cbFdOffset, PTR); + SET (external_rfd, cbRfdOffset, PTR); + /* ssext and external_ext are set up just below. */ + +#undef SET + + /* Set up the external symbols. */ + debug.ssext = debug.ssext_end = NULL; + debug.external_ext = debug.external_ext_end = NULL; + if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, TRUE, + elf_get_extr, elf_set_index)) + as_fatal (_("failed to set up debugging information: %s"), + bfd_errmsg (bfd_get_error ())); + + sec = bfd_get_section_by_name (stdoutput, ".mdebug"); + assert (sec != NULL); + + know (!stdoutput->output_has_begun); + + /* We set the size of the section, call bfd_set_section_contents + to force the ELF backend to allocate a file position, and then + write out the data. FIXME: Is this really the best way to do + this? */ + sec->_raw_size = bfd_ecoff_debug_size (stdoutput, &debug, debug_swap); + + /* Pass BUF to bfd_set_section_contents because this will + eventually become a call to fwrite, and ISO C prohibits + passing a NULL pointer to a stdio function even if the + pointer will not be used. */ + if (! bfd_set_section_contents (stdoutput, sec, (PTR) buf, + (file_ptr) 0, (bfd_size_type) 0)) + as_fatal (_("can't start writing .mdebug section: %s"), + bfd_errmsg (bfd_get_error ())); + + know (stdoutput->output_has_begun); + know (sec->filepos != 0); + + if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap, + sec->filepos)) + as_fatal (_("could not write .mdebug section: %s"), + bfd_errmsg (bfd_get_error ())); + } +#endif /* NEED_ECOFF_DEBUG */ +} + +#ifdef SCO_ELF + +/* Heavily plagarized from obj_elf_version. The idea is to emit the + SCO specific identifier in the .notes section to satisfy the SCO + linker. + + This looks more complicated than it really is. As opposed to the + "obvious" solution, this should handle the cross dev cases + correctly. (i.e, hosting on a 64 bit big endian processor, but + generating SCO Elf code) Efficiency isn't a concern, as there + should be exactly one of these sections per object module. + + SCO OpenServer 5 identifies it's ELF modules with a standard ELF + .note section. + + int_32 namesz = 4 ; Name size + int_32 descsz = 12 ; Descriptive information + int_32 type = 1 ; + char name[4] = "SCO" ; Originator name ALWAYS SCO + NULL + int_32 version = (major ver # << 16) | version of tools ; + int_32 source = (tool_id << 16 ) | 1 ; + int_32 info = 0 ; These are set by the SCO tools, but we + don't know enough about the source + environment to set them. SCO ld currently + ignores them, and recommends we set them + to zero. */ + +#define SCO_MAJOR_VERSION 0x1 +#define SCO_MINOR_VERSION 0x1 + +void +sco_id () +{ + + char *name; + unsigned int c; + char ch; + char *p; + asection *seg = now_seg; + subsegT subseg = now_subseg; + Elf_Internal_Note i_note; + Elf_External_Note e_note; + asection *note_secp = (asection *) NULL; + int i, len; + + /* create the .note section */ + + note_secp = subseg_new (".note", 0); + bfd_set_section_flags (stdoutput, + note_secp, + SEC_HAS_CONTENTS | SEC_READONLY); + + /* process the version string */ + + i_note.namesz = 4; + i_note.descsz = 12; /* 12 descriptive bytes */ + i_note.type = NT_VERSION; /* Contains a version string */ + + p = frag_more (sizeof (i_note.namesz)); + md_number_to_chars (p, (valueT) i_note.namesz, 4); + + p = frag_more (sizeof (i_note.descsz)); + md_number_to_chars (p, (valueT) i_note.descsz, 4); + + p = frag_more (sizeof (i_note.type)); + md_number_to_chars (p, (valueT) i_note.type, 4); + + p = frag_more (4); + strcpy (p, "SCO"); + + /* Note: this is the version number of the ELF we're representing */ + p = frag_more (4); + md_number_to_chars (p, (SCO_MAJOR_VERSION << 16) | (SCO_MINOR_VERSION), 4); + + /* Here, we pick a magic number for ourselves (yes, I "registered" + it with SCO. The bottom bit shows that we are compat with the + SCO ABI. */ + p = frag_more (4); + md_number_to_chars (p, 0x4c520000 | 0x0001, 4); + + /* If we knew (or cared) what the source language options were, we'd + fill them in here. SCO has given us permission to ignore these + and just set them to zero. */ + p = frag_more (4); + md_number_to_chars (p, 0x0000, 4); + + frag_align (2, 0, 0); + + /* We probably can't restore the current segment, for there likely + isn't one yet... */ + if (seg && subseg) + subseg_set (seg, subseg); + +} + +#endif /* SCO_ELF */ + +static int +elf_separate_stab_sections () +{ +#ifdef NEED_ECOFF_DEBUG + return (!ECOFF_DEBUGGING); +#else + return 1; +#endif +} + +static void +elf_init_stab_section (seg) + segT seg; +{ +#ifdef NEED_ECOFF_DEBUG + if (!ECOFF_DEBUGGING) #endif + obj_elf_init_stab_section (seg); } + +const struct format_ops elf_format_ops = +{ + bfd_target_elf_flavour, + 0, /* dfl_leading_underscore */ + 1, /* emit_section_symbols */ + elf_begin, + elf_file_symbol, + elf_frob_symbol, + elf_frob_file, + elf_frob_file_before_adjust, + 0, /* obj_frob_file_before_fix */ + elf_frob_file_after_relocs, + elf_s_get_size, elf_s_set_size, + elf_s_get_align, elf_s_set_align, + elf_s_get_other, + elf_s_set_other, + 0, /* s_get_desc */ + 0, /* s_set_desc */ + 0, /* s_get_type */ + 0, /* s_set_type */ + elf_copy_symbol_attributes, +#ifdef NEED_ECOFF_DEBUG + ecoff_generate_asm_lineno, + ecoff_stab, +#else + 0, /* generate_asm_lineno */ + 0, /* process_stab */ +#endif + elf_separate_stab_sections, + elf_init_stab_section, + elf_sec_sym_ok_for_reloc, + elf_pop_insert, +#ifdef NEED_ECOFF_DEBUG + elf_ecoff_set_ext, +#else + 0, /* ecoff_set_ext */ +#endif + elf_obj_read_begin_hook, + elf_obj_symbol_new_hook +};