X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gas%2Fconfig%2Fobj-elf.c;h=21fd0fa22411c5d5676eaec1db264a992f0feb1c;hb=52ccafd0351e92cb9afa9c96de6fecdad94bb4e4;hp=ab4676253ea2fb330b7c8e1a72e036babbe45163;hpb=fa20b8bfd563b7640450910bcffa3cd9676bd544;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c index ab4676253e..21fd0fa224 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 (C) 1992, 93, 94, 95, 96, 97, 98, 99, 2000 + Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -13,15 +14,54 @@ 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 "subsegs.h" #include "obstack.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_copy_symbol_attributes PARAMS ((symbolS *, symbolS *)); +static int elf_sec_sym_ok_for_reloc PARAMS ((asection *)); +static void adjust_stab_sections PARAMS ((bfd *, asection *, PTR)); + +#ifdef NEED_ECOFF_DEBUG +static 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)); @@ -30,25 +70,49 @@ 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)); -static void obj_elf_data PARAMS ((int)); -static void obj_elf_text PARAMS ((int)); - -const pseudo_typeS obj_pseudo_table[] = +static void obj_elf_visibility PARAMS ((int)); +static void obj_elf_symver PARAMS ((int)); +static void obj_elf_vtable_inherit PARAMS ((int)); +static void obj_elf_vtable_entry PARAMS ((int)); +static void obj_elf_subsection PARAMS ((int)); +static void obj_elf_popsection 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}, + /* 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", obj_elf_vtable_inherit, 0}, + {"vtable_entry", obj_elf_vtable_entry, 0}, + /* These are used for dwarf. */ {"2byte", cons, 2}, {"4byte", cons, 4}, @@ -58,12 +122,131 @@ const pseudo_typeS obj_pseudo_table[] = {"data", obj_elf_data, 0}, {"text", obj_elf_text, 0}, - {NULL} /* end sentinel */ + /* 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_copy_symbol_attributes (dest, src) + symbolS *dest, *src; +{ + OBJ_COPY_SYMBOL_ATTRIBUTES (dest, src); +} + +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; @@ -71,8 +254,8 @@ elf_file_symbol (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) { @@ -82,11 +265,15 @@ 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; +void +obj_elf_common (is_common) + int is_common; { char *name; char c; @@ -95,6 +282,12 @@ obj_elf_common (ignore) symbolS *symbolP; int have_align; + if (flag_mri && is_common) + { + s_mri_common (0); + return; + } + name = input_line_pointer; c = get_symbol_end (); /* just after name is now '\0' */ @@ -103,14 +296,14 @@ 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; } input_line_pointer++; /* skip ',' */ if ((temp = get_absolute_expression ()) < 0) { - as_bad (".COMMon length (%d.) <0! Ignored.", temp); + as_bad (_(".COMMon length (%d.) <0! Ignored."), temp); ignore_rest_of_line (); return; } @@ -118,17 +311,17 @@ obj_elf_common (ignore) *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 (_("Ignoring attempt to re-define symbol")); ignore_rest_of_line (); return; } 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.", + as_warn (_("Length of .comm \"%s\" is already %ld. Not changed to %d."), S_GET_NAME (symbolP), (long) S_GET_VALUE (symbolP), size); } } @@ -151,10 +344,10 @@ obj_elf_common (ignore) if (temp < 0) { temp = 0; - as_warn ("Common alignment negative; 0 assumed"); + as_warn (_("Common alignment negative; 0 assumed")); } } - if (symbolP->local) + if (symbol_get_obj (symbolP)->local) { segT old_sec; int old_subsec; @@ -164,17 +357,30 @@ 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; + } + } + 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); @@ -183,9 +389,9 @@ 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 @@ -207,6 +413,9 @@ obj_elf_common (ignore) ; goto allocate_common; } + + symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT; + demand_empty_rest_of_line (); return; @@ -217,7 +426,7 @@ 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 (); @@ -225,9 +434,9 @@ obj_elf_common (ignore) } } -static void +static void obj_elf_local (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { char *name; int c; @@ -241,7 +450,7 @@ 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++; @@ -254,9 +463,9 @@ 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; @@ -270,7 +479,7 @@ 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++; @@ -283,11 +492,63 @@ obj_elf_weak (ignore) demand_empty_rest_of_line (); } +static void +obj_elf_visibility (visibility) + int visibility; +{ + char *name; + int c; + symbolS *symbolP; + asymbol *bfdsym; + elf_symbol_type *elfsym; + + do + { + name = input_line_pointer; + c = get_symbol_end (); + symbolP = symbol_find_or_make (name); + *input_line_pointer = c; + + SKIP_WHITESPACE (); + + bfdsym = symbol_get_bfdsym (symbolP); + elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); + + assert (elfsym); + + elfsym->internal_elf_sym.st_other = visibility; + + if (c == ',') + { + input_line_pointer ++; + + SKIP_WHITESPACE (); + + if (*input_line_pointer == '\n') + c = '\n'; + } + } + while (c == ','); + + demand_empty_rest_of_line (); +} + + static segT previous_section; static int previous_subsection; +struct section_stack +{ + struct section_stack *next; + segT seg, prev_seg; + int subseg, prev_subseg; +}; + +static struct section_stack *section_stack; + + /* Handle the .section pseudo-op. This code supports two different - syntaxes. + syntaxes. The first is found on Solaris, and looks like .section ".sec1",#alloc,#execinstr,#write @@ -304,21 +565,265 @@ static int previous_subsection; 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; +}; + +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 }, + { ".fini", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + { ".init", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + { ".line", SHT_PROGBITS, 0 }, + { ".note", SHT_NOTE, 0 }, + { ".rodata", SHT_PROGBITS, SHF_ALLOC }, + { ".rodata1", SHT_PROGBITS, SHF_ALLOC }, + { ".text", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + +#ifdef ELF_TC_SPECIAL_SECTIONS + ELF_TC_SPECIAL_SECTIONS +#endif + +#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_section (xxx) - int xxx; +obj_elf_change_section (name, type, attr, push) + char *name; + int type, attr, push; { - char *string; int new_sec; segT sec; - flagword flags; + +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif + + /* Switch to the section, creating it if necessary. */ + if (push) + { + 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; + + new_sec = bfd_get_section_by_name (stdoutput, name) == NULL; + sec = subseg_new (name, 0); + + if (new_sec) + { + flagword flags; + symbolS *secsym; + int i; + + /* 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) + as_warn (_("Setting incorrect section type for %s"), name); + + if ((attr &~ special_sections[i].attributes) != 0) + { + /* 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)); +#ifdef md_elf_section_flags + flags = md_elf_section_flags (flags, attr, type); +#endif + + /* Prevent SEC_HAS_CONTENTS from being inadvertently set. */ + if (type == SHT_NOBITS) + seg_info (sec)->bss = 1; + + bfd_set_section_flags (stdoutput, sec, flags); + + /* 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)); + } + +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif +} + +int +obj_elf_parse_section_letters (str, len) + char *str; + size_t len; +{ + int attr = 0; + + while (len > 0) + { + switch (*str) + { + case 'a': + attr |= SHF_ALLOC; + break; + case 'w': + attr |= SHF_WRITE; + break; + case 'x': + attr |= SHF_EXECINSTR; + break; + default: + { + char *bad_msg = _("Unrecognized .section attribute: want a,w,x"); +#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 attr; +} + +int +obj_elf_section_word (str, len) + char *str; + size_t len; +{ + 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; + +#ifdef md_elf_section_word + { + int md_attr = md_elf_section_word (str, len); + if (md_attr >= 0) + return md_attr; + } +#endif + + as_warn (_("Unrecognized section attribute")); + return 0; +} + +int +obj_elf_section_type (str, len) + char *str; + size_t len; +{ + if (len == 8 && strncmp (str, "progbits", 8) == 0) + return SHT_PROGBITS; + if (len == 6 && strncmp (str, "nobits", 6) == 0) + return SHT_NOBITS; + +#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_section (push) + int push; +{ + char *name, *beg, *end; + int type, attr, dummy; + +#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) */ /* Get name of section. */ SKIP_WHITESPACE (); if (*input_line_pointer == '"') { - string = demand_copy_C_string (&xxx); - if (string == NULL) + name = demand_copy_C_string (&dummy); + if (name == NULL) { ignore_rest_of_line (); return; @@ -326,161 +831,87 @@ obj_elf_section (xxx) } else { - char *p = input_line_pointer; - char c; - while (0 == strchr ("\n\t,; ", *p)) - p++; - if (p == input_line_pointer) + end = input_line_pointer; + while (0 == strchr ("\n\t,; ", *end)) + end++; + if (end == input_line_pointer) { - as_warn ("Missing section name"); + as_warn (_("Missing section name")); ignore_rest_of_line (); return; } - c = *p; - *p = 0; - string = xmalloc ((unsigned long) (p - input_line_pointer + 1)); - strcpy (string, input_line_pointer); - *p = c; - input_line_pointer = p; - } - - /* Switch to the section, creating it if necessary. */ - previous_section = now_seg; - previous_subsection = now_subseg; - - new_sec = bfd_get_section_by_name (stdoutput, string) == NULL; - sec = subseg_new (string, 0); - /* If this section already existed, we don't bother to change the - flag values. */ - if (! new_sec) - { - while (! is_end_of_line[(unsigned char) *input_line_pointer]) - ++input_line_pointer; - ++input_line_pointer; - return; + name = xmalloc (end - input_line_pointer + 1); + memcpy (name, input_line_pointer, end - input_line_pointer); + name[end - input_line_pointer] = '\0'; + input_line_pointer = end; } - SKIP_WHITESPACE (); - if (*input_line_pointer != ',') - { - /* No flags given. Guess at some useful defaults. */ - if (strcmp (string, ".data") == 0 - || strcmp (string, ".data1") == 0 - || strcmp (string, ".sdata") == 0 - || strcmp (string, ".rodata") == 0 - || strcmp (string, ".rodata1") == 0) - flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_RELOC | SEC_DATA; - else if (strcmp (string, ".text") == 0 - || strcmp (string, ".init") == 0 - || strcmp (string, ".fini") == 0) - flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_RELOC | SEC_CODE; - else if (strcmp (string, ".bss") == 0 - || strcmp (string, ".sbss") == 0) - flags = SEC_ALLOC; - else - flags = SEC_RELOC; - } - else + + type = SHT_NULL; + attr = 0; + + if (*input_line_pointer == ',') { /* Skip the comma. */ ++input_line_pointer; - SKIP_WHITESPACE (); + if (*input_line_pointer == '"') { - /* Pick up a string with a combination of a, w, x. */ - flags = SEC_READONLY | SEC_RELOC; - ++input_line_pointer; - while (*input_line_pointer != '"') + beg = demand_copy_C_string (&dummy); + if (beg == NULL) { - switch (*input_line_pointer) - { - case 'a': - flags |= SEC_ALLOC | SEC_LOAD; - break; - case 'w': - flags &=~ SEC_READONLY; - break; - case 'x': - flags |= SEC_CODE; - break; - default: - as_warn ("Bad .section directive: want a,w,x in string"); - ignore_rest_of_line (); - return; - } - ++input_line_pointer; + ignore_rest_of_line (); + return; } - - /* Skip the closing quote. */ - ++input_line_pointer; + attr |= obj_elf_parse_section_letters (beg, strlen (beg)); SKIP_WHITESPACE (); if (*input_line_pointer == ',') { + char c; ++input_line_pointer; SKIP_WHITESPACE (); - if (*input_line_pointer == '@') + c = *input_line_pointer; + if (c == '"') { - ++input_line_pointer; - if (strncmp (input_line_pointer, "progbits", - sizeof "progbits" - 1) == 0) - { - flags |= SEC_ALLOC | SEC_LOAD; - input_line_pointer += sizeof "progbits" - 1; - } - else if (strncmp (input_line_pointer, "nobits", - sizeof "nobits" - 1) == 0) - { - flags &=~ SEC_LOAD; - input_line_pointer += sizeof "nobits" - 1; - } - else + beg = demand_copy_C_string (&dummy); + if (beg == NULL) { - as_warn ("Unrecognized section type"); 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 { - flags = SEC_READONLY | SEC_RELOC; do { + char c; + SKIP_WHITESPACE (); if (*input_line_pointer != '#') { - as_warn ("Bad .section directive"); - ignore_rest_of_line (); - return; - } - ++input_line_pointer; - if (strncmp (input_line_pointer, "write", - sizeof "write" - 1) == 0) - { - flags &=~ SEC_READONLY; - input_line_pointer += sizeof "write" - 1; - } - else if (strncmp (input_line_pointer, "alloc", - sizeof "alloc" - 1) == 0) - { - flags |= SEC_ALLOC | SEC_LOAD; - input_line_pointer += sizeof "alloc" - 1; - } - else if (strncmp (input_line_pointer, "execinstr", - sizeof "execinstr" - 1) == 0) - { - flags |= SEC_CODE; - input_line_pointer += sizeof "execinstr" - 1; - } - else - { - as_warn ("Unrecognized section attribute"); + as_warn (_("Bad .section directive - 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++ == ','); @@ -488,150 +919,349 @@ obj_elf_section (xxx) } } - bfd_set_section_flags (stdoutput, sec, flags); - demand_empty_rest_of_line (); + + obj_elf_change_section (name, type, attr, push); } /* Change to the .data section. */ -static void +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. */ -static void +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; + int ignore ATTRIBUTE_UNUSED; { + segT new_section; + int new_subsection; + if (previous_section == 0) { - as_bad (".previous without corresponding .section; ignored"); + as_bad (_(".previous without corresponding .section; ignored")); return; } - subseg_set (previous_section, previous_subsection); - previous_section = 0; + +#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 int -obj_elf_write_symbol_p (sym) - symbolS *sym; +static void +obj_elf_popsection (xxx) + int xxx ATTRIBUTE_UNUSED; { - /* 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. */ + struct section_stack *top = section_stack; - if (S_IS_LOCAL (sym)) + if (top == NULL) { - asymbol *bsym = sym->bsym; - bfd *abfd = bsym->the_bfd; - asection *bsec; + as_bad (_(".popsection without corresponding .pushsection; ignored")); + return; + } - for (bsec = abfd->sections; bsec; bsec = bsec->next) - { - struct reloc_cache_entry **rlocs = bsec->orelocation; - int rcnt = bsec->reloc_count; +#ifdef md_flush_pending_output + md_flush_pending_output (); +#endif - if (rlocs) - { - int i; + section_stack = top->next; + previous_section = top->prev_seg; + previous_subsection = top->prev_subseg; + subseg_set (top->seg, top->subseg); + free (top); - for (i = 0; i < rcnt; i++) - if (rlocs[i]->sym_ptr_ptr - && rlocs[i]->sym_ptr_ptr[0] == bsym) - return 1; - } - else - { - /* 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; - } - } - } - return 0; +#ifdef md_elf_section_change_hook + md_elf_section_change_hook (); +#endif } -int -obj_elf_write_symbol (sym) - symbolS *sym; +static void +obj_elf_line (ignore) + int ignore ATTRIBUTE_UNUSED; { - return /* obj_elf_write_symbol_p (sym) || */ !S_IS_LOCAL (sym); + /* 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 (); } -int -obj_elf_frob_symbol (sym, punt) - symbolS *sym; - int *punt; +/* 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; { -#if 0 /* ?? The return value is ignored. Only the value of *punt is - relevant. */ - return obj_elf_write_symbol_p (sym); -#endif - /* FIXME: Just return 0 until is fixed. */ - return 0; + char *name; + char c; + symbolS *sym; + + name = input_line_pointer; + c = get_symbol_end (); + + sym = symbol_find_or_make (name); + + *input_line_pointer = c; + + if (symbol_get_obj (sym)->versioned_name != NULL) + { + as_bad (_("multiple .symver directives for symbol `%s'"), + S_GET_NAME (sym)); + ignore_rest_of_line (); + return; + } + + SKIP_WHITESPACE (); + if (*input_line_pointer != ',') + { + as_bad (_("expected comma after name in .symver")); + ignore_rest_of_line (); + return; + } + + ++input_line_pointer; + name = input_line_pointer; + while (1) + { + c = get_symbol_end (); + if (c != ELF_VER_CHR) + break; + *input_line_pointer++ = c; + } + + 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; + } + + 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". */ + static void -obj_elf_line (ignore) - int ignore; +obj_elf_vtable_inherit (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 ())); + 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; + } + + ++input_line_pointer; + SKIP_WHITESPACE (); + + if (*input_line_pointer == '#') + ++input_line_pointer; + + if (input_line_pointer[0] == '0' + && (input_line_pointer[1] == '\0' + || isspace ((unsigned char) 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; + + assert (symbol_get_value_expression (csym)->X_op == O_constant); + 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". */ + +static void +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; + } + + ++input_line_pointer; + if (*input_line_pointer == '#') + ++input_line_pointer; + + offset = get_absolute_expression (); + + fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0, + BFD_RELOC_VTABLE_ENTRY); + demand_empty_rest_of_line (); } -void -obj_read_begin_hook () +void +elf_obj_read_begin_hook () { +#ifdef NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + ecoff_read_begin_hook (); +#endif } -void -obj_symbol_new_hook (symbolP) +void +elf_obj_symbol_new_hook (symbolP) symbolS *symbolP; { -#if 0 /* BFD already takes care of this */ - elf32_symbol_type *esym = (elf32_symbol_type *) symbolP; + struct elf_obj_sy *sy_obj; - /* There is an Elf_Internal_Sym and an Elf_External_Sym. For now, - just zero them out. */ + sy_obj = symbol_get_obj (symbolP); + sy_obj->size = NULL; + sy_obj->versioned_name = NULL; - 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 NEED_ECOFF_DEBUG + if (ECOFF_DEBUGGING) + ecoff_symbol_new_hook (symbolP); #endif } -void +void obj_elf_version (ignore) - int ignore; + int ignore ATTRIBUTE_UNUSED; { char *name; unsigned int c; @@ -685,20 +1315,20 @@ obj_elf_version (ignore) 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 (); @@ -712,7 +1342,7 @@ 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; @@ -721,7 +1351,7 @@ 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; } @@ -732,74 +1362,83 @@ obj_elf_size (ignore) S_SET_SIZE (sym, exp.X_add_number); else { -#if 0 - static int warned; - if (!warned) - { - as_tsktsk (".size expressions not yet supported, ignored"); - warned++; - } -#endif + 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 four 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 + */ + 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; - p = input_line_pointer; - *p = c; + 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 .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; + + 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 - { - as_bad ("unrecognized symbol type, ignored"); - goto egress; - } + as_bad (_("ignoring unrecognized symbol type \"%s\""), typename); + + *input_line_pointer = c; + + symbol_get_bfdsym (sym)->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; @@ -815,6 +1454,8 @@ obj_elf_ident (ignore) subseg_set (old_section, old_subsection); } +#ifdef INIT_STAB_SECTION + /* The first entry in a .stabs section is special. */ void @@ -823,27 +1464,36 @@ obj_elf_init_stab_section (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); - stroff = get_stab_string_offset (file, segment_name (seg)); + stabstr_name = (char *) alloca (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; @@ -872,28 +1522,401 @@ adjust_stab_sections (abfd, sec, xxx) bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8); } -void -elf_frob_file () +#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; { - bfd_map_over_sections (stdoutput, adjust_stab_sections, (PTR) 0); + symbol_get_bfdsym (sym)->udata.p = (PTR) ext; +} -#ifdef elf_tc_symbol - { - int i; +/* 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. */ - for (i = 0; i < stdoutput->symcount; i++) - elf_tc_symbol (stdoutput, (PTR) (stdoutput->outsymbols[i]), - i + 1); - } +static 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) + { + /* 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)) + { + char *p; + + /* Verify that the name isn't using the @@ syntax--this is + reserved for definitions of the default version to link + against. */ + p = strchr (sy_obj->versioned_name, ELF_VER_CHR); + know (p != NULL); + 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 + { + 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); + + 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 +} + +void +elf_frob_file () +{ + bfd_map_over_sections (stdoutput, adjust_stab_sections, (PTR) 0); + #ifdef elf_tc_final_processing elf_tc_final_processing (); #endif +} - /* Finally, we must make any target-specific sections. */ +/* 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. */ -#ifdef elf_tc_make_sections - elf_tc_make_sections (stdoutput); -#endif +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 == false); + + /* 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 == true); + 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 */ + +const struct format_ops elf_format_ops = +{ + bfd_target_elf_flavour, + 0, /* dfl_leading_underscore */ + 1, /* emit_section_symbols */ + elf_frob_symbol, + elf_frob_file, + 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, + 0, /* s_get_desc */ + elf_copy_symbol_attributes, +#ifdef NEED_ECOFF_DEBUG + ecoff_generate_asm_lineno, + ecoff_stab, +#else + 0, /* generate_asm_lineno */ + 0, /* process_stab */ +#endif + 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, +};