/* ELF object file format
Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002 Free Software Foundation, Inc.
+ 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2,
+ published by the Free Software Foundation; either version 3,
or (at your option) any later version.
GAS is distributed in the hope that it will be useful, but
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. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#define OBJ_HEADER "obj-elf.h"
#include "as.h"
#include "safe-ctype.h"
#include "subsegs.h"
#include "obstack.h"
+#include "struc-symbol.h"
+#include "dwarf2dbg.h"
#ifndef ECOFF_DEBUGGING
#define ECOFF_DEBUGGING 0
#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));
+#ifdef TC_I386
+#include "elf/x86-64.h"
+#endif
-#ifdef NEED_ECOFF_DEBUG
-static boolean elf_get_extr PARAMS ((asymbol *, EXTR *));
-static void elf_set_index PARAMS ((asymbol *, bfd_size_type));
+#ifdef TC_MEP
+#include "elf/mep.h"
#endif
-static void obj_elf_line PARAMS ((int));
-void obj_elf_version PARAMS ((int));
-static void obj_elf_size PARAMS ((int));
-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_visibility PARAMS ((int));
-static void obj_elf_change_section
- PARAMS ((const char *, int, int, int, const char *, 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_line (int);
+static void obj_elf_size (int);
+static void obj_elf_type (int);
+static void obj_elf_ident (int);
+static void obj_elf_weak (int);
+static void obj_elf_local (int);
+static void obj_elf_visibility (int);
+static void obj_elf_symver (int);
+static void obj_elf_subsection (int);
+static void obj_elf_popsection (int);
+static void obj_elf_tls_common (int);
+static void obj_elf_lcomm (int);
+static void obj_elf_struct (int);
static const pseudo_typeS elf_pseudo_table[] =
{
{"comm", obj_elf_common, 0},
{"common", obj_elf_common, 1},
{"ident", obj_elf_ident, 0},
+ {"lcomm", obj_elf_lcomm, 0},
{"local", obj_elf_local, 0},
{"previous", obj_elf_previous, 0},
{"section", obj_elf_section, 0},
{"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},
+ {"vtable_inherit", (void (*) (int)) &obj_elf_vtable_inherit, 0},
+ {"vtable_entry", (void (*) (int)) &obj_elf_vtable_entry, 0},
/* These are used for dwarf. */
{"2byte", cons, 2},
{"4byte", cons, 4},
{"8byte", cons, 8},
+ /* These are used for dwarf2. */
+ { "file", (void (*) (int)) dwarf2_directive_file, 0 },
+ { "loc", dwarf2_directive_loc, 0 },
+ { "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 },
/* We need to trap the section changing calls to handle .previous. */
{"data", obj_elf_data, 0},
+ {"offset", obj_elf_struct, 0},
+ {"struct", obj_elf_struct, 0},
{"text", obj_elf_text, 0},
+ {"tls_common", obj_elf_tls_common, 0},
+
/* End sentinel. */
{NULL, NULL, 0},
};
/* This is called when the assembler starts. */
+asection *elf_com_section_ptr;
+
void
-elf_begin ()
+elf_begin (void)
{
+ asection *s;
+
/* 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)));
+ s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME);
+ symbol_table_insert (section_symbol (s));
+ s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME);
+ symbol_table_insert (section_symbol (s));
+ s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME);
+ symbol_table_insert (section_symbol (s));
+ elf_com_section_ptr = bfd_com_section_ptr;
}
void
-elf_pop_insert ()
+elf_pop_insert (void)
{
pop_insert (elf_pseudo_table);
if (ECOFF_DEBUGGING)
}
static bfd_vma
-elf_s_get_size (sym)
- symbolS *sym;
+elf_s_get_size (symbolS *sym)
{
return S_GET_SIZE (sym);
}
static void
-elf_s_set_size (sym, sz)
- symbolS *sym;
- bfd_vma sz;
+elf_s_set_size (symbolS *sym, bfd_vma sz)
{
S_SET_SIZE (sym, sz);
}
static bfd_vma
-elf_s_get_align (sym)
- symbolS *sym;
+elf_s_get_align (symbolS *sym)
{
return S_GET_ALIGN (sym);
}
static void
-elf_s_set_align (sym, align)
- symbolS *sym;
- bfd_vma align;
+elf_s_set_align (symbolS *sym, bfd_vma align)
{
S_SET_ALIGN (sym, align);
}
int
-elf_s_get_other (sym)
- symbolS *sym;
+elf_s_get_other (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;
+elf_s_set_other (symbolS *sym, int other)
{
S_SET_OTHER (sym, other);
}
static int
-elf_sec_sym_ok_for_reloc (sec)
- asection *sec;
+elf_sec_sym_ok_for_reloc (asection *sec)
{
return obj_sec_sym_ok_for_reloc (sec);
}
void
-elf_file_symbol (s)
- const char *s;
+elf_file_symbol (const char *s, int appfile)
{
- symbolS *sym;
+ if (!appfile
+ || symbol_rootP == NULL
+ || symbol_rootP->bsym == NULL
+ || (symbol_rootP->bsym->flags & BSF_FILE) == 0)
+ {
+ symbolS *sym;
+ unsigned int name_length;
- sym = symbol_new (s, absolute_section, (valueT) 0, (struct frag *) 0);
- symbol_set_frag (sym, &zero_address_frag);
- symbol_get_bfdsym (sym)->flags |= BSF_FILE;
+ sym = symbol_new (s, absolute_section, 0, NULL);
+ symbol_set_frag (sym, &zero_address_frag);
- if (symbol_rootP != sym)
- {
- symbol_remove (sym, &symbol_rootP, &symbol_lastP);
- symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP);
+ name_length = strlen (s);
+ if (name_length > strlen (S_GET_NAME (sym)))
+ {
+ obstack_grow (¬es, s, name_length + 1);
+ S_SET_NAME (sym, (const char *) obstack_finish (¬es));
+ }
+ else
+ strcpy ((char *) S_GET_NAME (sym), s);
+
+ symbol_get_bfdsym (sym)->flags |= BSF_FILE;
+
+ if (symbol_rootP != sym)
+ {
+ symbol_remove (sym, &symbol_rootP, &symbol_lastP);
+ symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP);
#ifdef DEBUG
- verify_symbol_chain (symbol_rootP, symbol_lastP);
+ verify_symbol_chain (symbol_rootP, symbol_lastP);
#endif
+ }
}
#ifdef NEED_ECOFF_DEBUG
- ecoff_new_file (s);
+ ecoff_new_file (s, appfile);
#endif
}
-void
-obj_elf_common (is_common)
- int is_common;
+/* Called from read.c:s_comm after we've parsed .comm symbol, size.
+ Parse a possible alignment value. */
+
+symbolS *
+elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size)
{
- char *name;
- char c;
- char *p;
- int temp, size;
- symbolS *symbolP;
- int have_align;
+ addressT align = 0;
+ int is_local = symbol_get_obj (symbolP)->local;
- if (flag_mri && is_common)
+ if (*input_line_pointer == ',')
{
- s_mri_common (0);
- return;
- }
+ char *save = input_line_pointer;
- name = input_line_pointer;
- c = get_symbol_end ();
- /* just after name is now '\0' */
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- 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);
- ignore_rest_of_line ();
- return;
- }
- size = temp;
- *p = 0;
- symbolP = symbol_find_or_make (name);
- *p = c;
- if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
- {
- as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP));
- ignore_rest_of_line ();
- return;
- }
- if (S_GET_VALUE (symbolP) != 0)
- {
- 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);
- }
- }
- know (symbolP->sy_frag == &zero_address_frag);
- if (*input_line_pointer != ',')
- have_align = 0;
- else
- {
- have_align = 1;
input_line_pointer++;
SKIP_WHITESPACE ();
- }
- if (! have_align || *input_line_pointer != '"')
- {
- if (! have_align)
- temp = 0;
- else
- {
- temp = get_absolute_expression ();
- if (temp < 0)
- {
- temp = 0;
- as_warn (_("common alignment negative; 0 assumed"));
- }
- }
- if (symbol_get_obj (symbolP)->local)
+
+ if (*input_line_pointer == '"')
{
- segT old_sec;
- int old_subsec;
- char *pfrag;
- int align;
-
- /* allocate_bss: */
- old_sec = now_seg;
- old_subsec = now_subseg;
- if (temp)
+ /* For sparc. Accept .common symbol, length, "bss" */
+ input_line_pointer++;
+ /* Some use the dot, some don't. */
+ if (*input_line_pointer == '.')
+ input_line_pointer++;
+ /* Some say data, some say bss. */
+ if (strncmp (input_line_pointer, "bss\"", 4) == 0)
+ input_line_pointer += 4;
+ else if (strncmp (input_line_pointer, "data\"", 5) == 0)
+ input_line_pointer += 5;
+ else
{
- /* 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;
- }
+ char *p = input_line_pointer;
+ char c;
+
+ while (*--p != '"')
+ ;
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ if (*input_line_pointer++ == '"')
+ break;
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
+ as_bad (_("bad .common segment %s"), p);
+ *input_line_pointer = c;
+ 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, 0);
- if (S_GET_SEGMENT (symbolP) == bss_section)
- 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);
+ /* ??? Don't ask me why these are always global. */
+ is_local = 0;
}
else
{
- allocate_common:
- S_SET_VALUE (symbolP, (valueT) size);
- S_SET_ALIGN (symbolP, temp);
- S_SET_EXTERNAL (symbolP);
- S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
+ input_line_pointer = save;
+ align = parse_align (is_local);
+ if (align == (addressT) -1)
+ return NULL;
}
}
+
+ if (is_local)
+ {
+ bss_alloc (symbolP, size, align);
+ S_CLEAR_EXTERNAL (symbolP);
+ }
else
{
- input_line_pointer++;
- /* @@ Some use the dot, some don't. Can we get some consistency?? */
- if (*input_line_pointer == '.')
- input_line_pointer++;
- /* @@ Some say data, some say bss. */
- if (strncmp (input_line_pointer, "bss\"", 4)
- && strncmp (input_line_pointer, "data\"", 5))
- {
- while (*--input_line_pointer != '"')
- ;
- input_line_pointer--;
- goto bad_common_segment;
- }
- while (*input_line_pointer++ != '"')
- ;
- goto allocate_common;
+ S_SET_VALUE (symbolP, size);
+ S_SET_ALIGN (symbolP, align);
+ S_SET_EXTERNAL (symbolP);
+ S_SET_SEGMENT (symbolP, elf_com_section_ptr);
}
symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
- demand_empty_rest_of_line ();
- return;
+ return symbolP;
+}
- {
- bad_common_segment:
- p = input_line_pointer;
- while (*p && *p != '\n')
- p++;
- c = *p;
- *p = '\0';
- as_bad (_("bad .common segment %s"), input_line_pointer + 1);
- *p = c;
- input_line_pointer = p;
- ignore_rest_of_line ();
- return;
- }
+void
+obj_elf_common (int is_common)
+{
+ if (flag_mri && is_common)
+ s_mri_common (0);
+ else
+ s_comm_internal (0, elf_common_parse);
}
static void
-obj_elf_local (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED)
+{
+ symbolS *symbolP = s_comm_internal (0, elf_common_parse);
+
+ if (symbolP)
+ symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL;
+}
+
+static void
+obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED)
+{
+ symbolS *symbolP = s_comm_internal (0, s_lcomm_internal);
+
+ if (symbolP)
+ symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
+}
+
+static void
+obj_elf_local (int ignore ATTRIBUTE_UNUSED)
{
char *name;
int c;
}
static void
-obj_elf_weak (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_weak (int ignore ATTRIBUTE_UNUSED)
{
char *name;
int c;
}
static void
-obj_elf_visibility (visibility)
- int visibility;
+obj_elf_visibility (int visibility)
{
char *name;
int c;
bfdsym = symbol_get_bfdsym (symbolP);
elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym);
- assert (elfsym);
+ gas_assert (elfsym);
- elfsym->internal_elf_sym.st_other = visibility;
+ elfsym->internal_elf_sym.st_other &= ~3;
+ elfsym->internal_elf_sym.st_other |= visibility;
if (c == ',')
{
static struct section_stack *section_stack;
+static bfd_boolean
+get_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf)
+{
+ const char *gname = (const char *) inf;
+ const char *group_name = elf_group_name (sec);
+
+ return (group_name == gname
+ || (group_name != NULL
+ && gname != NULL
+ && strcmp (group_name, gname) == 0));
+}
+
/* Handle the .section pseudo-op. This code supports two different
syntaxes.
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 },
-#if 0
- /* FIXME: The current gcc, as of 2002-03-03, will emit
-
- .section .init_array,"aw",@progbits
-
- for __attribute__ ((section (".init_array"))). "@progbits" marks
- the incorrect section type. For now, we make them with
- SHT_PROGBITS. BFD will fix the section type. Gcc should be changed
- to emit
-
- .section .init_array
-
- */
- { ".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 },
-#else
- { ".init_array",SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { ".fini_array",SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { ".preinit_array",SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
-#endif
-
-#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 }
-};
-
-static void
-obj_elf_change_section (name, type, attr, entsize, group_name, push)
- const char *name;
- int type;
- int attr;
- int entsize;
- const char *group_name;
- int push;
+void
+obj_elf_change_section (const char *name,
+ int type,
+ bfd_vma attr,
+ int entsize,
+ const char *group_name,
+ int linkonce,
+ int push)
{
asection *old_sec;
segT sec;
flagword flags;
- int i;
+ const struct elf_backend_data *bed;
+ const struct bfd_elf_special_section *ssect;
#ifdef md_flush_pending_output
md_flush_pending_output ();
if (push)
{
struct section_stack *elt;
- elt = xmalloc (sizeof (struct section_stack));
+ elt = (struct section_stack *) xmalloc (sizeof (struct section_stack));
elt->next = section_stack;
elt->seg = now_seg;
elt->prev_seg = previous_section;
previous_section = now_seg;
previous_subsection = now_subseg;
- old_sec = bfd_get_section_by_name (stdoutput, name);
- sec = subseg_new (name, 0);
+ old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section,
+ (void *) group_name);
+ if (old_sec)
+ {
+ sec = old_sec;
+ subseg_set (sec, 0);
+ }
+ else
+ sec = subseg_force_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)
- {
- 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"),
+ bed = get_elf_backend_data (stdoutput);
+ ssect = (*bed->get_sec_type_attr) (stdoutput, sec);
+
+ if (ssect != NULL)
+ {
+ bfd_boolean override = FALSE;
+
+ if (type == SHT_NULL)
+ type = ssect->type;
+ else if (type != ssect->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. Also for x86-64 large bss
+ sections, gcc, as of 2005-07-06, will emit
+
+ .section .lbss,"aw",@progbits
+
+ "@progbits" is incorrect. */
+#ifdef TC_I386
+ && (bed->s->arch_size != 64
+ || !(ssect->attr & SHF_X86_64_LARGE))
+#endif
+ && ssect->type != SHT_INIT_ARRAY
+ && ssect->type != SHT_FINI_ARRAY
+ && ssect->type != SHT_PREINIT_ARRAY)
+ {
+ /* We allow to specify any type for a .note section. */
+ if (ssect->type != SHT_NOTE)
+ as_warn (_("setting incorrect section type for %s"),
+ name);
+ }
+ else
+ {
+ as_warn (_("ignoring incorrect section type for %s"),
name);
- }
- attr |= special_sections[i].attributes;
- break;
- }
+ type = ssect->type;
+ }
+ }
+
+ if (old_sec == NULL && (attr & ~ssect->attr) != 0)
+ {
+ /* As a GNU extension, we permit a .note section to be
+ allocatable. If the linker sees an allocatable .note
+ section, it will create a PT_NOTE segment in the output
+ file. We also allow "x" for .note.GNU-stack. */
+ if (ssect->type == SHT_NOTE
+ && (attr == SHF_ALLOC || attr == SHF_EXECINSTR))
+ ;
+ /* Allow different SHF_MERGE and SHF_STRINGS if we have
+ something like .rodata.str. */
+ else if (ssect->suffix_length == -2
+ && name[ssect->prefix_length] == '.'
+ && (attr
+ & ~ssect->attr
+ & ~SHF_MERGE
+ & ~SHF_STRINGS) == 0)
+ ;
+ /* .interp, .strtab and .symtab can have SHF_ALLOC. */
+ else if (attr == SHF_ALLOC
+ && (strcmp (name, ".interp") == 0
+ || strcmp (name, ".strtab") == 0
+ || strcmp (name, ".symtab") == 0))
+ override = TRUE;
+ /* .note.GNU-stack can have SHF_EXECINSTR. */
+ else if (attr == SHF_EXECINSTR
+ && strcmp (name, ".note.GNU-stack") == 0)
+ override = TRUE;
+#ifdef TC_ALPHA
+ /* A section on Alpha may have SHF_ALPHA_GPREL. */
+ else if ((attr & ~ssect->attr) == SHF_ALPHA_GPREL)
+ override = TRUE;
+#endif
+ else
+ {
+ if (group_name == NULL)
+ as_warn (_("setting incorrect section attributes for %s"),
+ name);
+ override = TRUE;
+ }
+ }
+ if (!override && old_sec == NULL)
+ attr |= ssect->attr;
+ }
/* Convert ELF type and flags to BFD flags. */
flags = (SEC_RELOC
| (((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_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 (linkonce)
+ flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
+
if (old_sec == NULL)
{
symbolS *secsym;
+ if (type == SHT_NULL)
+ type = bfd_elf_get_default_section_type (flags);
+ elf_section_type (sec) = type;
+ elf_section_flags (sec) = attr;
+
/* Prevent SEC_HAS_CONTENTS from being inadvertently set. */
if (type == SHT_NOBITS)
- seg_info (sec)->bss = 1;
+ seg_info (sec)->bss = 1;
bfd_set_section_flags (stdoutput, sec, flags);
if (flags & SEC_MERGE)
if (secsym != NULL)
symbol_set_bfdsym (secsym, sec->symbol);
else
- symbol_table_insert (section_symbol (sec));
+ symbol_table_insert (section_symbol (sec));
}
- else if (attr != 0)
+ else
{
- /* 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))
- as_warn (_("ignoring changed section attributes for %s"), name);
- else if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize)
- as_warn (_("ignoring changed section entity size for %s"), name);
- else if ((attr & SHF_GROUP) != 0
- && strcmp (elf_group_name (old_sec), group_name) != 0)
- as_warn (_("ignoring new section group for %s"), name);
+ if (type != SHT_NULL
+ && (unsigned) type != elf_section_type (old_sec))
+ as_warn (_("ignoring changed section type for %s"), name);
+
+ 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);
+ }
}
#ifdef md_elf_section_change_hook
#endif
}
-static int
-obj_elf_parse_section_letters (str, len)
- char *str;
- size_t len;
+static bfd_vma
+obj_elf_parse_section_letters (char *str, size_t len)
{
- int attr = 0;
+ bfd_vma attr = 0;
while (len > 0)
{
case 'G':
attr |= SHF_GROUP;
break;
+ case 'T':
+ attr |= SHF_TLS;
+ break;
/* Compatibility. */
case 'm':
if (*(str - 1) == 'a')
}
default:
{
- char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G");
+ 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)
+ bfd_vma 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;
- }
+ as_fatal ("%s", bad_msg);
}
break;
}
}
static int
-obj_elf_section_word (str, len)
- char *str;
- size_t len;
+obj_elf_section_type (char *str, size_t len, bfd_boolean warn)
{
- 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 == 8 && strncmp (str, "progbits", 8) == 0)
+ return SHT_PROGBITS;
+ if (len == 6 && strncmp (str, "nobits", 6) == 0)
+ return SHT_NOBITS;
+ if (len == 4 && strncmp (str, "note", 4) == 0)
+ return SHT_NOTE;
+ if (len == 10 && strncmp (str, "init_array", 10) == 0)
+ return SHT_INIT_ARRAY;
+ if (len == 10 && strncmp (str, "fini_array", 10) == 0)
+ return SHT_FINI_ARRAY;
+ if (len == 13 && strncmp (str, "preinit_array", 13) == 0)
+ return SHT_PREINIT_ARRAY;
-#ifdef md_elf_section_word
+#ifdef md_elf_section_type
{
- int md_attr = md_elf_section_word (str, len);
- if (md_attr >= 0)
- return md_attr;
+ int md_type = md_elf_section_type (str, len);
+ if (md_type >= 0)
+ return md_type;
}
#endif
- as_warn (_("unrecognized section attribute"));
+ if (warn)
+ as_warn (_("unrecognized section type"));
return 0;
}
-static int
-obj_elf_section_type (str, len)
- char *str;
- size_t len;
+static bfd_vma
+obj_elf_section_word (char *str, size_t len, int *type)
{
- if (len == 8 && strncmp (str, "progbits", 8) == 0)
- return SHT_PROGBITS;
- if (len == 6 && strncmp (str, "nobits", 6) == 0)
- return SHT_NOBITS;
+ int ret;
-#ifdef md_elf_section_type
+ 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_type = md_elf_section_type (str, len);
- if (md_type >= 0)
- return md_type;
+ bfd_vma md_attr = md_elf_section_word (str, len);
+ if (md_attr > 0)
+ return md_attr;
}
#endif
- as_warn (_("unrecognized section type"));
+ ret = obj_elf_section_type (str, len, FALSE);
+ if (ret != 0)
+ *type = ret;
+ else
+ as_warn (_("unrecognized section attribute"));
+
return 0;
}
/* Get name of section. */
static char *
-obj_elf_section_name ()
+obj_elf_section_name (void)
{
char *name;
end++;
if (end == input_line_pointer)
{
- as_warn (_("missing name"));
+ as_bad (_("missing name"));
ignore_rest_of_line ();
return NULL;
}
- name = xmalloc (end - input_line_pointer + 1);
+ name = (char *) 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 ();
}
void
-obj_elf_section (push)
- int push;
+obj_elf_section (int push)
{
char *name, *group_name, *beg;
- int type, attr, dummy;
+ int type, dummy;
+ bfd_vma attr;
int entsize;
+ int linkonce;
+ subsegT new_subsection = -1;
#ifndef TC_I370
if (flag_mri)
attr = 0;
group_name = NULL;
entsize = 0;
+ linkonce = 0;
if (*input_line_pointer == ',')
{
++input_line_pointer;
SKIP_WHITESPACE ();
+ if (push && ISDIGIT (*input_line_pointer))
+ {
+ /* .pushsection has an optional subsection. */
+ new_subsection = (subsegT) get_absolute_expression ();
+
+ SKIP_WHITESPACE ();
+
+ /* Stop if we don't see a comma. */
+ if (*input_line_pointer != ',')
+ goto done;
+
+ /* Skip the comma. */
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ }
+
if (*input_line_pointer == '"')
{
beg = demand_copy_C_string (&dummy);
ignore_rest_of_line ();
return;
}
- type = obj_elf_section_type (beg, strlen (beg));
+ type = obj_elf_section_type (beg, strlen (beg), TRUE);
}
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);
+ type = obj_elf_section_type (beg, input_line_pointer - beg, TRUE);
}
else
input_line_pointer = save;
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)
{
SKIP_WHITESPACE ();
if (*input_line_pointer != '#')
{
- as_warn (_("character following name is not '#'"));
+ as_bad (_("character following name is not '#'"));
ignore_rest_of_line ();
return;
}
c = get_symbol_end ();
*input_line_pointer = c;
- attr |= obj_elf_section_word (beg, input_line_pointer - beg);
+ attr |= obj_elf_section_word (beg, input_line_pointer - beg, & type);
SKIP_WHITESPACE ();
}
}
}
+done:
demand_empty_rest_of_line ();
- obj_elf_change_section (name, type, attr, entsize, group_name, push);
+ obj_elf_change_section (name, type, attr, entsize, group_name, linkonce, push);
+
+ if (push && new_subsection != -1)
+ subseg_set (now_seg, new_subsection);
}
/* Change to the .data section. */
void
-obj_elf_data (i)
- int i;
+obj_elf_data (int i)
{
#ifdef md_flush_pending_output
md_flush_pending_output ();
/* Change to the .text section. */
void
-obj_elf_text (i)
- int i;
+obj_elf_text (int i)
{
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
}
+/* Change to the *ABS* section. */
+
+void
+obj_elf_struct (int i)
+{
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ previous_section = now_seg;
+ previous_subsection = now_subseg;
+ s_struct (i);
+
+#ifdef md_elf_section_change_hook
+ md_elf_section_change_hook ();
+#endif
+}
+
static void
-obj_elf_subsection (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_subsection (int ignore ATTRIBUTE_UNUSED)
{
- register int temp;
+ int temp;
#ifdef md_flush_pending_output
md_flush_pending_output ();
sections. */
void
-obj_elf_section_change_hook ()
+obj_elf_section_change_hook (void)
{
previous_section = now_seg;
previous_subsection = now_subseg;
}
void
-obj_elf_previous (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_previous (int ignore ATTRIBUTE_UNUSED)
{
segT new_section;
int new_subsection;
}
static void
-obj_elf_popsection (xxx)
- int xxx ATTRIBUTE_UNUSED;
+obj_elf_popsection (int xxx ATTRIBUTE_UNUSED)
{
struct section_stack *top = section_stack;
}
static void
-obj_elf_line (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_line (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 ()));
+ new_logical_line (NULL, get_absolute_expression ());
demand_empty_rest_of_line ();
}
with the same value as the symbol NAME. */
static void
-obj_elf_symver (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_symver (int ignore ATTRIBUTE_UNUSED)
{
char *name;
char c;
}
++input_line_pointer;
+ SKIP_WHITESPACE ();
name = input_line_pointer;
/* Temporarily include '@' in symbol names. */
syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */
struct fix *
-obj_elf_vtable_inherit (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED)
{
char *cname, *pname;
symbolS *csym, *psym;
if (csym == NULL || symbol_get_frag (csym) == NULL)
{
- as_bad ("expected `%s' to have already been set for .vtable_inherit",
+ as_bad (_("expected `%s' to have already been set for .vtable_inherit"),
cname);
bad = 1;
}
SKIP_WHITESPACE ();
if (*input_line_pointer != ',')
{
- as_bad ("expected comma after name in .vtable_inherit");
+ as_bad (_("expected comma after name in .vtable_inherit"));
ignore_rest_of_line ();
return NULL;
}
if (bad)
return NULL;
- assert (symbol_get_value_expression (csym)->X_op == O_constant);
+ gas_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);
".vtable_entry tablename, offset". */
struct fix *
-obj_elf_vtable_entry (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED)
{
char *name;
symbolS *sym;
SKIP_WHITESPACE ();
if (*input_line_pointer != ',')
{
- as_bad ("expected comma after name in .vtable_entry");
+ as_bad (_("expected comma after name in .vtable_entry"));
ignore_rest_of_line ();
return NULL;
}
}
void
-elf_obj_read_begin_hook ()
+elf_obj_read_begin_hook (void)
{
#ifdef NEED_ECOFF_DEBUG
if (ECOFF_DEBUGGING)
}
void
-elf_obj_symbol_new_hook (symbolP)
- symbolS *symbolP;
+elf_obj_symbol_new_hook (symbolS *symbolP)
{
struct elf_obj_sy *sy_obj;
context. */
void
-elf_copy_symbol_attributes (dest, src)
- symbolS *dest, *src;
+elf_copy_symbol_attributes (symbolS *dest, symbolS *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 = (expressionS *) xmalloc (sizeof (expressionS));
*destelf->size = *srcelf->size;
}
else
}
void
-obj_elf_version (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_version (int ignore ATTRIBUTE_UNUSED)
{
char *name;
unsigned int c;
subsegT subseg = now_subseg;
Elf_Internal_Note i_note;
Elf_External_Note e_note;
- asection *note_secp = (asection *) NULL;
- int len;
+ asection *note_secp = NULL;
SKIP_WHITESPACE ();
if (*input_line_pointer == '\"')
{
+ unsigned int len;
+
++input_line_pointer; /* -> 1st char of string. */
name = input_line_pointer;
*(input_line_pointer - 1) = '\0';
*input_line_pointer = c;
- /* create the .note section */
-
+ /* 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 */
+ /* Process the version string. */
+ len = strlen (name) + 1;
- len = strlen (name);
-
- i_note.namesz = ((len + 1) + 3) & ~3; /* round this to word boundary */
- i_note.descsz = 0; /* no description */
+ /* PR 3456: Although the name field is padded out to an 4-byte
+ boundary, the namesz field should not be adjusted. */
+ i_note.namesz = len;
+ 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, sizeof (e_note.namesz));
+ md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz));
p = frag_more (sizeof (e_note.descsz));
- md_number_to_chars (p, (valueT) i_note.descsz, sizeof (e_note.descsz));
+ md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz));
p = frag_more (sizeof (e_note.type));
- md_number_to_chars (p, (valueT) i_note.type, sizeof (e_note.type));
- p = frag_more (len + 1);
- strcpy (p, name);
+ md_number_to_chars (p, i_note.type, sizeof (e_note.type));
+ p = frag_more (len);
+ memcpy (p, name, len);
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 ATTRIBUTE_UNUSED;
+obj_elf_size (int ignore ATTRIBUTE_UNUSED)
{
char *name = input_line_pointer;
char c = get_symbol_end ();
else
{
symbol_get_obj (sym)->size =
- (expressionS *) xmalloc (sizeof (expressionS));
+ (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:
+ There are six syntaxes:
The first (used on Solaris) is
.type SYM,#function
.type SYM,%function
The fifth (used on SVR4/860) is
.type SYM,"function"
+ The sixth (emitted by recent SunPRO under Solaris) is
+ .type SYM,[0-9]
+ where the integer is the STT_* value.
*/
+static char *
+obj_elf_type_name (char *cp)
+{
+ char *p;
+
+ p = input_line_pointer;
+ if (*input_line_pointer >= '0'
+ && *input_line_pointer <= '9')
+ {
+ while (*input_line_pointer >= '0'
+ && *input_line_pointer <= '9')
+ ++input_line_pointer;
+ *cp = *input_line_pointer;
+ *input_line_pointer = '\0';
+ }
+ else
+ *cp = get_symbol_end ();
+
+ return p;
+}
+
static void
-obj_elf_type (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_type (int ignore ATTRIBUTE_UNUSED)
{
char *name;
char c;
int type;
- const char *typename;
+ const char *type_name;
symbolS *sym;
elf_symbol_type *elfsym;
|| *input_line_pointer == '%')
++input_line_pointer;
- typename = input_line_pointer;
- c = get_symbol_end ();
+ type_name = obj_elf_type_name (& c);
type = 0;
- if (strcmp (typename, "function") == 0
- || strcmp (typename, "STT_FUNC") == 0)
+ if (strcmp (type_name, "function") == 0
+ || strcmp (type_name, "2") == 0
+ || strcmp (type_name, "STT_FUNC") == 0)
type = BSF_FUNCTION;
- else if (strcmp (typename, "object") == 0
- || strcmp (typename, "STT_OBJECT") == 0)
+ else if (strcmp (type_name, "object") == 0
+ || strcmp (type_name, "1") == 0
+ || strcmp (type_name, "STT_OBJECT") == 0)
type = BSF_OBJECT;
+ else if (strcmp (type_name, "tls_object") == 0
+ || strcmp (type_name, "6") == 0
+ || strcmp (type_name, "STT_TLS") == 0)
+ type = BSF_OBJECT | BSF_THREAD_LOCAL;
+ else if (strcmp (type_name, "notype") == 0
+ || strcmp (type_name, "0") == 0
+ || strcmp (type_name, "STT_NOTYPE") == 0)
+ ;
+ else if (strcmp (type_name, "common") == 0
+ || strcmp (type_name, "5") == 0
+ || strcmp (type_name, "STT_COMMON") == 0)
+ {
+ type = BSF_OBJECT;
+
+ if (! S_IS_COMMON (sym))
+ {
+ if (S_IS_VOLATILE (sym))
+ {
+ sym = symbol_clone (sym, 1);
+ S_SET_SEGMENT (sym, bfd_com_section_ptr);
+ S_SET_VALUE (sym, 0);
+ S_SET_EXTERNAL (sym);
+ symbol_set_frag (sym, &zero_address_frag);
+ S_CLEAR_VOLATILE (sym);
+ }
+ else if (S_IS_DEFINED (sym) || symbol_equated_p (sym))
+ as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym));
+ else
+ {
+ /* FIXME: Is it safe to just change the section ? */
+ S_SET_SEGMENT (sym, bfd_com_section_ptr);
+ S_SET_VALUE (sym, 0);
+ S_SET_EXTERNAL (sym);
+ }
+ }
+ }
+ else if (strcmp (type_name, "gnu_indirect_function") == 0
+ || strcmp (type_name, "10") == 0
+ || strcmp (type_name, "STT_GNU_IFUNC") == 0)
+ {
+ const struct elf_backend_data *bed;
+
+ bed = get_elf_backend_data (stdoutput);
+ if (!(bed->elf_osabi == ELFOSABI_LINUX
+ /* GNU/Linux is still using the default value 0. */
+ || bed->elf_osabi == ELFOSABI_NONE))
+ as_bad (_("symbol type \"%s\" is supported only by GNU targets"),
+ type_name);
+ type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION;
+ }
+ else if (strcmp (type_name, "gnu_unique_object") == 0)
+ {
+ struct elf_backend_data *bed;
+
+ bed = (struct elf_backend_data *) get_elf_backend_data (stdoutput);
+ if (!(bed->elf_osabi == ELFOSABI_LINUX
+ /* GNU/Linux is still using the default value 0. */
+ || bed->elf_osabi == ELFOSABI_NONE))
+ as_bad (_("symbol type \"%s\" is supported only by GNU targets"),
+ type_name);
+ type = BSF_OBJECT | BSF_GNU_UNIQUE;
+ /* PR 10549: Always set OSABI field to LINUX for objects containing unique symbols. */
+ bed->elf_osabi = ELFOSABI_LINUX;
+ }
#ifdef md_elf_symbol_type
- else if ((type = md_elf_symbol_type (typename, sym, elfsym)) != -1)
+ else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1)
;
#endif
else
- as_bad (_("unrecognized symbol type \"%s\""), typename);
+ as_bad (_("unrecognized symbol type \"%s\""), type_name);
*input_line_pointer = c;
}
static void
-obj_elf_ident (ignore)
- int ignore ATTRIBUTE_UNUSED;
+obj_elf_ident (int ignore ATTRIBUTE_UNUSED)
{
static segT comment_section;
segT old_section = now_seg;
char *p;
comment_section = subseg_new (".comment", 0);
bfd_set_section_flags (stdoutput, comment_section,
- SEC_READONLY | SEC_HAS_CONTENTS);
+ SEC_READONLY | SEC_HAS_CONTENTS
+ | SEC_MERGE | SEC_STRINGS);
+ comment_section->entsize = 1;
+#ifdef md_elf_section_change_hook
+ md_elf_section_change_hook ();
+#endif
p = frag_more (1);
*p = 0;
}
else
subseg_set (comment_section, 0);
- stringer (1);
+ stringer (8 + 1);
subseg_set (old_section, old_subsection);
}
/* The first entry in a .stabs section is special. */
void
-obj_elf_init_stab_section (seg)
- segT seg;
+obj_elf_init_stab_section (segT seg)
{
char *file;
char *p;
p = frag_more (12);
/* Zero it out. */
memset (p, 0, 12);
- as_where (&file, (unsigned int *) NULL);
+ as_where (&file, NULL);
stabstr_name = (char *) xmalloc (strlen (segment_name (seg)) + 4);
strcpy (stabstr_name, segment_name (seg));
strcat (stabstr_name, "str");
/* 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 ATTRIBUTE_UNUSED;
+adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
{
char *name;
asection *strsec;
nsyms = bfd_section_size (abfd, sec) / 12 - 1;
p = seg_info (sec)->stabu.p;
- assert (p != 0);
+ gas_assert (p != 0);
- bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
- bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
+ bfd_h_put_16 (abfd, nsyms, p + 6);
+ bfd_h_put_32 (abfd, strsz, p + 8);
}
#ifdef NEED_ECOFF_DEBUG
this at the moment, so we do it ourselves. We save the information
in the symbol. */
+#ifdef OBJ_MAYBE_ELF
+static
+#endif
void
-elf_ecoff_set_ext (sym, ext)
- symbolS *sym;
- struct ecoff_extr *ext;
+elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext)
{
- symbol_get_bfdsym (sym)->udata.p = (PTR) ext;
+ symbol_get_bfdsym (sym)->udata.p = 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 boolean
-elf_get_extr (sym, ext)
- asymbol *sym;
- EXTR *ext;
+static bfd_boolean
+elf_get_extr (asymbol *sym, EXTR *ext)
{
if (sym->udata.p == NULL)
- return false;
+ return FALSE;
*ext = *(EXTR *) sym->udata.p;
- return true;
+ 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;
+elf_set_index (asymbol *sym ATTRIBUTE_UNUSED,
+ bfd_size_type indx ATTRIBUTE_UNUSED)
{
}
#endif /* NEED_ECOFF_DEBUG */
void
-elf_frob_symbol (symp, puntp)
- symbolS *symp;
- int *puntp;
+elf_frob_symbol (symbolS *symp, int *puntp)
{
struct elf_obj_sy *sy_obj;
/* 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 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
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. */
+ 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;
+ *puntp = TRUE;
}
S_SET_NAME (symp, sy_obj->versioned_name);
}
else
{
- if (p [1] == ELF_VER_CHR && p [2] == ELF_VER_CHR)
+ 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);
+ memmove (&p[2], &p[3], l);
S_SET_NAME (symp, sy_obj->versioned_name);
}
else
&& (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 <tdel@windriver.com> 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. */
+ struct hash_control *indexes; /* Maps group name to index in head array. */
};
/* Called via bfd_map_over_sections. If SEC is a member of a group,
each list. */
static void
-build_group_lists (abfd, sec, inf)
- bfd *abfd ATTRIBUTE_UNUSED;
- asection *sec;
- PTR inf;
+build_group_lists (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf)
{
struct group_list *list = (struct group_list *) inf;
const char *group_name = elf_group_name (sec);
unsigned int i;
+ unsigned int *elem_idx;
+ unsigned int *idx_ptr;
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++)
+ elem_idx = (unsigned int *) hash_find (list->indexes, group_name);
+ if (elem_idx != NULL)
{
- 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;
- }
+ elf_next_in_group (sec) = list->head[*elem_idx];
+ list->head[*elem_idx] = sec;
+ list->elt_count[*elem_idx] += 1;
+ return;
}
/* New group. Make the arrays bigger in chunks to minimize calls to
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 = (asection **) xrealloc (list->head,
+ newsize * sizeof (*list->head));
+ list->elt_count = (unsigned int *)
+ xrealloc (list->elt_count, newsize * sizeof (*list->elt_count));
}
list->head[i] = sec;
list->elt_count[i] = 1;
list->num_group += 1;
+
+ /* Add index to hash. */
+ idx_ptr = (unsigned int *) xmalloc (sizeof (unsigned int));
+ *idx_ptr = i;
+ hash_insert (list->indexes, group_name, idx_ptr);
+}
+
+static void free_section_idx (const char *key ATTRIBUTE_UNUSED, void *val)
+{
+ free ((unsigned int *) val);
}
void
-elf_frob_file ()
+elf_frob_file (void)
{
struct group_list list;
unsigned int i;
- bfd_map_over_sections (stdoutput, adjust_stab_sections, (PTR) 0);
+ bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL);
/* 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);
+ list.indexes = hash_new ();
+ bfd_map_over_sections (stdoutput, build_group_lists, &list);
/* Make the SHT_GROUP sections that describe each section group. We
can't set up the section contents here yet, because elf section
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;
+ bfd_size_type size;
- s = subseg_force_new (group_name, 0);
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;
+ }
+ }
+
+ 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 ()));
}
+ elf_section_type (s) = SHT_GROUP;
/* 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);
+ size = 4 * (list.elt_count[i] + 1);
+ bfd_set_section_size (stdoutput, s, size);
+ s->contents = (unsigned char *) frag_more (size);
frag_now->fr_fix = frag_now_fix_octets ();
+ frag_wane (frag_now);
}
#ifdef elf_tc_final_processing
elf_tc_final_processing ();
#endif
+
+ /* Cleanup hash. */
+ hash_traverse (list.indexes, free_section_idx);
+ hash_die (list.indexes);
}
/* It removes any unneeded versioned symbols from the symbol table. */
void
-elf_frob_file_before_adjust ()
+elf_frob_file_before_adjust (void)
{
if (symbol_rootP)
{
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)
+ if (p[1] == ELF_VER_CHR && p[2] == ELF_VER_CHR)
{
size_t l = strlen (&p[3]) + 1;
- memmove (&p [1], &p[3], l);
+ memmove (&p[1], &p[3], l);
}
if (symbol_used_p (symp) == 0
&& symbol_used_in_reloc_p (symp) == 0)
have generated the relocation section. */
void
-elf_frob_file_after_relocs ()
+elf_frob_file_after_relocs (void)
{
#ifdef NEED_ECOFF_DEBUG
if (ECOFF_DEBUGGING)
debug_swap
= get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap;
- know (debug_swap != (const struct ecoff_debug_swap *) NULL);
+ know (debug_swap != NULL);
ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap);
/* Set up the pointers in debug. */
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_dnr, cbDnOffset, void *);
+ SET (external_pdr, cbPdOffset, void *);
+ SET (external_sym, cbSymOffset, void *);
+ SET (external_opt, cbOptOffset, void *);
SET (external_aux, cbAuxOffset, union aux_ext *);
SET (ss, cbSsOffset, char *);
- SET (external_fdr, cbFdOffset, PTR);
- SET (external_rfd, cbRfdOffset, PTR);
+ SET (external_fdr, cbFdOffset, void *);
+ SET (external_rfd, cbRfdOffset, void *);
/* 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,
+ 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);
+ gas_assert (sec != NULL);
- know (stdoutput->output_has_begun == false);
+ 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);
+ bfd_set_section_size
+ (stdoutput, sec, 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))
+ 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, buf, 0, 0))
as_fatal (_("can't start writing .mdebug section: %s"),
bfd_errmsg (bfd_get_error ()));
- know (stdoutput->output_has_begun == true);
+ know (stdoutput->output_has_begun);
know (sec->filepos != 0);
if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap,
#ifdef SCO_ELF
-/* Heavily plagarized from obj_elf_version. The idea is to emit the
+/* Heavily plagiarized from obj_elf_version. The idea is to emit the
SCO specific identifier in the .notes section to satisfy the SCO
linker.
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
+ 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_MINOR_VERSION 0x1
void
-sco_id ()
+sco_id (void)
{
char *name;
subsegT subseg = now_subseg;
Elf_Internal_Note i_note;
Elf_External_Note e_note;
- asection *note_secp = (asection *) NULL;
+ asection *note_secp = NULL;
int i, len;
/* create the .note section */
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);
+ md_number_to_chars (p, i_note.namesz, 4);
p = frag_more (sizeof (i_note.descsz));
- md_number_to_chars (p, (valueT) i_note.descsz, 4);
+ md_number_to_chars (p, i_note.descsz, 4);
p = frag_more (sizeof (i_note.type));
- md_number_to_chars (p, (valueT) i_note.type, 4);
+ md_number_to_chars (p, i_note.type, 4);
p = frag_more (4);
strcpy (p, "SCO");
#endif /* SCO_ELF */
static int
-elf_separate_stab_sections ()
+elf_separate_stab_sections (void)
{
#ifdef NEED_ECOFF_DEBUG
return (!ECOFF_DEBUGGING);
}
static void
-elf_init_stab_section (seg)
- segT seg;
+elf_init_stab_section (segT seg)
{
#ifdef NEED_ECOFF_DEBUG
if (!ECOFF_DEBUGGING)
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,
projects / deliverable / binutils-gdb.git / blobdiff