/* objcopy.c -- copy object file from input to output, optionally massaging it.
- Copyright (C) 1991-2016 Free Software Foundation, Inc.
+ Copyright (C) 1991-2019 Free Software Foundation, Inc.
This file is part of GNU Binutils.
#include "filenames.h"
#include "fnmatch.h"
#include "elf-bfd.h"
-#include "libbfd.h"
#include "coff/internal.h"
#include "libcoff.h"
+#include "safe-ctype.h"
/* FIXME: See bfd/peXXigen.c for why we include an architecture specific
header in generic PE code. */
bfd_boolean found;
};
-/* A list to support redefine_sym. */
+/* A node includes symbol name mapping to support redefine_sym. */
struct redefine_node
{
char *source;
char *target;
- struct redefine_node *next;
};
struct addsym_node
static bfd_boolean verbose; /* Print file and target names. */
static bfd_boolean preserve_dates; /* Preserve input file timestamp. */
static int deterministic = -1; /* Enable deterministic archives. */
-static int status = 0; /* Exit status. */
+static int status = 0; /* Exit status. */
+
+static bfd_boolean merge_notes = FALSE; /* Merge note sections. */
+static bfd_byte * merged_notes = NULL; /* Contents on note section undergoing a merge. */
+static bfd_size_type merged_size = 0; /* New, smaller size of the merged note section. */
enum strip_action
{
#define SECTION_CONTEXT_SET_LMA (1 << 4) /* Set the sections' LMA address. */
#define SECTION_CONTEXT_ALTER_LMA (1 << 5) /* Increment or decrement the section's LMA address. */
#define SECTION_CONTEXT_SET_FLAGS (1 << 6) /* Set the section's flags. */
+#define SECTION_CONTEXT_REMOVE_RELOCS (1 << 7) /* Remove relocations for this section. */
bfd_vma vma_val; /* Amount to change by or set to. */
bfd_vma lma_val; /* Amount to change by or set to. */
} do_debug_sections = nothing;
/* Whether to generate ELF common symbols with the STT_COMMON type. */
-static enum bfd_link_discard do_elf_stt_common = unchanged;
+static enum bfd_link_elf_stt_common do_elf_stt_common = unchanged;
/* Whether to change the leading character in symbol names. */
static bfd_boolean change_leading_char = FALSE;
static htab_t globalize_specific_htab = NULL;
static htab_t keepglobal_specific_htab = NULL;
static htab_t weaken_specific_htab = NULL;
-static struct redefine_node *redefine_sym_list = NULL;
+static htab_t redefine_specific_htab = NULL;
+static htab_t redefine_specific_reverse_htab = NULL;
static struct addsym_node *add_sym_list = NULL, **add_sym_tail = &add_sym_list;
static int add_symbols = 0;
+static char *strip_specific_buffer = NULL;
+static char *strip_unneeded_buffer = NULL;
+static char *keep_specific_buffer = NULL;
+static char *localize_specific_buffer = NULL;
+static char *globalize_specific_buffer = NULL;
+static char *keepglobal_specific_buffer = NULL;
+static char *weaken_specific_buffer = NULL;
+
/* If this is TRUE, we weaken global symbols (set BSF_WEAK). */
static bfd_boolean weaken = FALSE;
OPTION_LOCALIZE_HIDDEN,
OPTION_LOCALIZE_SYMBOLS,
OPTION_LONG_SECTION_NAMES,
+ OPTION_MERGE_NOTES,
+ OPTION_NO_MERGE_NOTES,
OPTION_NO_CHANGE_WARNINGS,
OPTION_ONLY_KEEP_DEBUG,
OPTION_PAD_TO,
OPTION_REDEFINE_SYM,
OPTION_REDEFINE_SYMS,
OPTION_REMOVE_LEADING_CHAR,
+ OPTION_REMOVE_RELOCS,
OPTION_RENAME_SECTION,
OPTION_REVERSE_BYTES,
OPTION_SECTION_ALIGNMENT,
OPTION_STRIP_UNNEEDED_SYMBOLS,
OPTION_SUBSYSTEM,
OPTION_UPDATE_SECTION,
+ OPTION_VERILOG_DATA_WIDTH,
OPTION_WEAKEN,
OPTION_WEAKEN_SYMBOLS,
OPTION_WRITABLE_TEXT
{"input-target", required_argument, 0, 'I'},
{"keep-file-symbols", no_argument, 0, OPTION_KEEP_FILE_SYMBOLS},
{"keep-symbol", required_argument, 0, 'K'},
+ {"merge-notes", no_argument, 0, 'M'},
+ {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES},
{"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
{"output-file", required_argument, 0, 'o'},
{"output-format", required_argument, 0, 'O'}, /* Obsolete */
{"output-target", required_argument, 0, 'O'},
{"preserve-dates", no_argument, 0, 'p'},
{"remove-section", required_argument, 0, 'R'},
+ {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS},
{"strip-all", no_argument, 0, 's'},
{"strip-debug", no_argument, 0, 'S'},
{"strip-dwo", no_argument, 0, OPTION_STRIP_DWO},
{"localize-symbol", required_argument, 0, 'L'},
{"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
{"long-section-names", required_argument, 0, OPTION_LONG_SECTION_NAMES},
+ {"merge-notes", no_argument, 0, 'M'},
+ {"no-merge-notes", no_argument, 0, OPTION_NO_MERGE_NOTES},
{"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
{"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
{"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
{"redefine-syms", required_argument, 0, OPTION_REDEFINE_SYMS},
{"remove-leading-char", no_argument, 0, OPTION_REMOVE_LEADING_CHAR},
{"remove-section", required_argument, 0, 'R'},
+ {"remove-relocations", required_argument, 0, OPTION_REMOVE_RELOCS},
{"rename-section", required_argument, 0, OPTION_RENAME_SECTION},
{"reverse-bytes", required_argument, 0, OPTION_REVERSE_BYTES},
{"section-alignment", required_argument, 0, OPTION_SECTION_ALIGNMENT},
{"target", required_argument, 0, 'F'},
{"update-section", required_argument, 0, OPTION_UPDATE_SECTION},
{"verbose", no_argument, 0, 'v'},
+ {"verilog-data-width", required_argument, 0, OPTION_VERILOG_DATA_WIDTH},
{"version", no_argument, 0, 'V'},
{"weaken", no_argument, 0, OPTION_WEAKEN},
{"weaken-symbol", required_argument, 0, 'W'},
-1 means if we should use argv[0] to decide. */
extern int is_strip;
-/* The maximum length of an S record. This variable is declared in srec.c
+/* The maximum length of an S record. This variable is defined in srec.c
and can be modified by the --srec-len parameter. */
-extern unsigned int Chunk;
+extern unsigned int _bfd_srec_len;
/* Restrict the generation of Srecords to type S3 only.
- This variable is declare in bfd/srec.c and can be toggled
+ This variable is defined in bfd/srec.c and can be toggled
on by the --srec-forceS3 command line switch. */
-extern bfd_boolean S3Forced;
+extern bfd_boolean _bfd_srec_forceS3;
+
+/* Width of data in bytes for verilog output.
+ This variable is declared in bfd/verilog.c and can be modified by
+ the --verilog-data-width parameter. */
+extern unsigned int VerilogDataWidth;
/* Forward declarations. */
static void setup_section (bfd *, asection *, void *);
static void mark_symbols_used_in_relocations (bfd *, asection *, void *);
static bfd_boolean write_debugging_info (bfd *, void *, long *, asymbol ***);
static const char *lookup_sym_redefinition (const char *);
+static const char *find_section_rename (const char *, flagword *);
\f
-static void
+ATTRIBUTE_NORETURN static void
copy_usage (FILE *stream, int exit_status)
{
fprintf (stream, _("Usage: %s [option(s)] in-file [out-file]\n"), program_name);
-j --only-section <name> Only copy section <name> into the output\n\
--add-gnu-debuglink=<file> Add section .gnu_debuglink linking to <file>\n\
-R --remove-section <name> Remove section <name> from the output\n\
+ --remove-relocations <name> Remove relocations from section <name>\n\
-S --strip-all Remove all symbol and relocation information\n\
-g --strip-debug Remove all debugging symbols & sections\n\
--strip-dwo Remove all DWO sections\n\
--decompress-debug-sections Decompress DWARF debug sections using zlib\n\
--elf-stt-common=[yes|no] Generate ELF common symbols with STT_COMMON\n\
type\n\
+ --verilog-data-width <number> Specifies data width, in bytes, for verilog output\n\
+ -M --merge-notes Remove redundant entries in note sections\n\
+ --no-merge-notes Do not attempt to remove redundant notes (default)\n\
-v --verbose List all object files modified\n\
@<file> Read options from <file>\n\
-V --version Display this program's version number\n\
exit (exit_status);
}
-static void
+ATTRIBUTE_NORETURN static void
strip_usage (FILE *stream, int exit_status)
{
fprintf (stream, _("Usage: %s <option(s)> in-file(s)\n"), program_name);
Disable -D behavior (default)\n"));
fprintf (stream, _("\
-R --remove-section=<name> Also remove section <name> from the output\n\
+ --remove-relocations <name> Remove relocations from section <name>\n\
-s --strip-all Remove all symbol and relocation information\n\
-g -S -d --strip-debug Remove all debugging symbols & sections\n\
--strip-dwo Remove all DWO sections\n\
--strip-unneeded Remove all symbols not needed by relocations\n\
--only-keep-debug Strip everything but the debug information\n\
+ -M --merge-notes Remove redundant entries in note sections (default)\n\
+ --no-merge-notes Do not attempt to remove redundant notes\n\
-N --strip-symbol=<name> Do not copy symbol <name>\n\
-K --keep-symbol=<name> Do not strip symbol <name>\n\
--keep-file-symbols Do not strip file symbol(s)\n\
static struct section_list *
find_section_list (const char *name, bfd_boolean add, unsigned int context)
{
- struct section_list *p;
+ struct section_list *p, *match = NULL;
/* assert ((context & ((1 << 7) - 1)) != 0); */
}
/* If we are not adding a new name/pattern then
only check for a match if the context applies. */
- else if ((p->context & context)
- /* We could check for the presence of wildchar characters
- first and choose between calling strcmp and fnmatch,
- but is that really worth it ? */
- && fnmatch (p->pattern, name, 0) == 0)
- {
- p->used = TRUE;
- return p;
- }
+ else if (p->context & context)
+ {
+ /* We could check for the presence of wildchar characters
+ first and choose between calling strcmp and fnmatch,
+ but is that really worth it ? */
+ if (p->pattern [0] == '!')
+ {
+ if (fnmatch (p->pattern + 1, name, 0) == 0)
+ {
+ p->used = TRUE;
+ return NULL;
+ }
+ }
+ else
+ {
+ if (fnmatch (p->pattern, name, 0) == 0)
+ {
+ if (match == NULL)
+ match = p;
+ }
+ }
+ }
}
if (! add)
- return NULL;
+ {
+ if (match != NULL)
+ match->used = TRUE;
+ return match;
+ }
p = (struct section_list *) xmalloc (sizeof (struct section_list));
p->pattern = name;
return p;
}
+/* S1 is the entry node already in the table, S2 is the key node. */
+
+static int
+eq_string_redefnode (const void *s1, const void *s2)
+{
+ struct redefine_node *node1 = (struct redefine_node *) s1;
+ struct redefine_node *node2 = (struct redefine_node *) s2;
+ return !strcmp ((const char *) node1->source, (const char *) node2->source);
+}
+
+/* P is redefine node. Hash value is generated from its "source" filed. */
+
+static hashval_t
+htab_hash_redefnode (const void *p)
+{
+ struct redefine_node *redefnode = (struct redefine_node *) p;
+ return htab_hash_string (redefnode->source);
+}
+
+/* Create hashtab used for redefine node. */
+
+static htab_t
+create_symbol2redef_htab (void)
+{
+ return htab_create_alloc (16, htab_hash_redefnode, eq_string_redefnode, NULL,
+ xcalloc, free);
+}
+
/* There is htab_hash_string but no htab_eq_string. Makes sense. */
static int
globalize_specific_htab = create_symbol_htab ();
keepglobal_specific_htab = create_symbol_htab ();
weaken_specific_htab = create_symbol_htab ();
+ redefine_specific_htab = create_symbol2redef_htab ();
+ /* As there is no bidirectional hash table in libiberty, need a reverse table
+ to check duplicated target string. */
+ redefine_specific_reverse_htab = create_symbol_htab ();
}
/* Add a symbol to strip_specific_list. */
*htab_find_slot (htab, name, INSERT) = (char *) name;
}
+/* Like add_specific_symbol, but the element type is void *. */
+
+static void
+add_specific_symbol_node (const void *node, htab_t htab)
+{
+ *htab_find_slot (htab, node, INSERT) = (void *) node;
+}
+
/* Add symbols listed in `filename' to strip_specific_list. */
#define IS_WHITESPACE(c) ((c) == ' ' || (c) == '\t')
#define IS_LINE_TERMINATOR(c) ((c) == '\n' || (c) == '\r' || (c) == '\0')
static void
-add_specific_symbols (const char *filename, htab_t htab)
+add_specific_symbols (const char *filename, htab_t htab, char **buffer_p)
{
off_t size;
FILE * f;
line = eol;
line_count ++;
}
+
+ /* Do not free the buffer. Parts of it will have been referenced
+ in the calls to add_specific_symbol. */
+ *buffer_p = buffer;
}
/* See whether a symbol should be stripped or kept
return NULL;
ghdr = &elf_section_data (group)->this_hdr;
- if (ghdr->sh_link < elf_numsections (abfd))
+ if (ghdr->sh_link == elf_onesymtab (abfd))
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- Elf_Internal_Shdr *symhdr = elf_elfsections (abfd) [ghdr->sh_link];
+ Elf_Internal_Shdr *symhdr = &elf_symtab_hdr (abfd);
- if (symhdr->sh_type == SHT_SYMTAB
- && ghdr->sh_info > 0
- && ghdr->sh_info < (symhdr->sh_size / bed->s->sizeof_sym))
+ if (ghdr->sh_info > 0
+ && ghdr->sh_info < symhdr->sh_size / bed->s->sizeof_sym)
return isympp[ghdr->sh_info - 1];
}
return NULL;
return FALSE;
}
+static bfd_boolean
+is_merged_note_section (bfd * abfd, asection * sec)
+{
+ if (merge_notes
+ && bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && elf_section_data (sec)->this_hdr.sh_type == SHT_NOTE
+ /* FIXME: We currently only support merging GNU_BUILD_NOTEs.
+ We should add support for more note types. */
+ && ((elf_section_data (sec)->this_hdr.sh_flags & SHF_GNU_BUILD_NOTE) != 0
+ /* Old versions of GAS (prior to 2.27) could not set the section
+ flags to OS-specific values, so we also accept sections with the
+ expected name. */
+ || (strcmp (sec->name, GNU_BUILD_ATTRS_SECTION_NAME) == 0)))
+ return TRUE;
+
+ return FALSE;
+}
+
/* See if a non-group section is being removed. */
static bfd_boolean
const char *gname;
asection *elt, *first;
+ gsym = group_signature (sec);
+ /* Strip groups without a valid signature. */
+ if (gsym == NULL)
+ return TRUE;
+
/* PR binutils/3181
If we are going to strip the group signature symbol, then
strip the group section too. */
- gsym = group_signature (sec);
- if (gsym != NULL)
- gname = gsym->name;
- else
- gname = sec->name;
+ gname = gsym->name;
if ((strip_symbols == STRIP_ALL
&& !is_specified_symbol (gname, keep_specific_htab))
|| is_specified_symbol (gname, strip_specific_htab))
to[dst_count++] = create_new_symbol (ptr, obfd);
}
- if (redefine_sym_list)
+ if (htab_elements (redefine_specific_htab) || section_rename_list)
{
- char *old_name, *new_name;
+ char *new_name;
- old_name = (char *) bfd_asymbol_name (sym);
- new_name = (char *) lookup_sym_redefinition (old_name);
+ new_name = (char *) lookup_sym_redefinition (name);
+ if (new_name == name
+ && (flags & BSF_SECTION_SYM) != 0)
+ new_name = (char *) find_section_rename (name, NULL);
bfd_asymbol_name (sym) = new_name;
name = new_name;
}
static const char *
lookup_sym_redefinition (const char *source)
{
- struct redefine_node *list;
-
- for (list = redefine_sym_list; list != NULL; list = list->next)
- if (strcmp (source, list->source) == 0)
- return list->target;
+ struct redefine_node key_node = {(char *) source, NULL};
+ struct redefine_node *redef_node
+ = (struct redefine_node *) htab_find (redefine_specific_htab, &key_node);
- return source;
+ return redef_node == NULL ? source : redef_node->target;
}
-/* Add a node to a symbol redefine list. */
+/* Insert a node into symbol redefine hash tabel. */
static void
-redefine_list_append (const char *cause, const char *source, const char *target)
+add_redefine_and_check (const char *cause, const char *source,
+ const char *target)
{
- struct redefine_node **p;
- struct redefine_node *list;
- struct redefine_node *new_node;
+ struct redefine_node *new_node
+ = (struct redefine_node *) xmalloc (sizeof (struct redefine_node));
- for (p = &redefine_sym_list; (list = *p) != NULL; p = &list->next)
- {
- if (strcmp (source, list->source) == 0)
- fatal (_("%s: Multiple redefinition of symbol \"%s\""),
- cause, source);
+ new_node->source = strdup (source);
+ new_node->target = strdup (target);
- if (strcmp (target, list->target) == 0)
- fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
- cause, target);
- }
+ if (htab_find (redefine_specific_htab, new_node) != HTAB_EMPTY_ENTRY)
+ fatal (_("%s: Multiple redefinition of symbol \"%s\""),
+ cause, source);
- new_node = (struct redefine_node *) xmalloc (sizeof (struct redefine_node));
+ if (htab_find (redefine_specific_reverse_htab, target) != HTAB_EMPTY_ENTRY)
+ fatal (_("%s: Symbol \"%s\" is target of more than one redefinition"),
+ cause, target);
- new_node->source = strdup (source);
- new_node->target = strdup (target);
- new_node->next = NULL;
+ /* Insert the NEW_NODE into hash table for quick search. */
+ add_specific_symbol_node (new_node, redefine_specific_htab);
+
+ /* Insert the target string into the reverse hash table, this is needed for
+ duplicated target string check. */
+ add_specific_symbol (new_node->target, redefine_specific_reverse_htab);
- *p = new_node;
}
/* Handle the --redefine-syms option. Read lines containing "old new"
end_of_line:
/* Append the redefinition to the list. */
if (buf[0] != '\0')
- redefine_list_append (filename, &buf[0], &buf[outsym_off]);
+ add_redefine_and_check (filename, &buf[0], &buf[outsym_off]);
lineno++;
len = 0;
fatal (_("%s:%d: premature end of file"), filename, lineno);
free (buf);
+ fclose (file);
}
-/* Copy unkown object file IBFD onto OBFD.
+/* Copy unknown object file IBFD onto OBFD.
Returns TRUE upon success, FALSE otherwise. */
static bfd_boolean
return TRUE;
}
+/* Returns the number of bytes needed to store VAL. */
+
+static inline unsigned int
+num_bytes (unsigned long val)
+{
+ unsigned int count = 0;
+
+ /* FIXME: There must be a faster way to do this. */
+ while (val)
+ {
+ count ++;
+ val >>= 8;
+ }
+ return count;
+}
+
+typedef struct objcopy_internal_note
+{
+ Elf_Internal_Note note;
+ bfd_vma start;
+ bfd_vma end;
+ bfd_boolean modified;
+} objcopy_internal_note;
+
+/* Returns TRUE if a gap does, or could, exist between the address range
+ covered by PNOTE1 and PNOTE2. */
+
+static bfd_boolean
+gap_exists (objcopy_internal_note * pnote1,
+ objcopy_internal_note * pnote2)
+{
+ /* Without range end notes, we assume that a gap might exist. */
+ if (pnote1->end == 0 || pnote2->end == 0)
+ return TRUE;
+
+ /* FIXME: Alignment of 16 bytes taken from x86_64 binaries.
+ Really we should extract the alignment of the section covered by the notes. */
+ return BFD_ALIGN (pnote1->end, 16) < pnote2->start;
+}
+
+static bfd_boolean
+is_open_note (objcopy_internal_note * pnote)
+{
+ return (pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_OPEN);
+}
+
+static bfd_boolean
+is_func_note (objcopy_internal_note * pnote)
+{
+ return (pnote->note.type == NT_GNU_BUILD_ATTRIBUTE_FUNC);
+}
+
+static bfd_boolean
+is_64bit (bfd * abfd)
+{
+ /* Should never happen, but let's be paranoid. */
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ return FALSE;
+
+ return elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64;
+}
+
+/* Merge the notes on SEC, removing redundant entries.
+ Returns the new, smaller size of the section upon success. */
+
+static bfd_size_type
+merge_gnu_build_notes (bfd * abfd, asection * sec, bfd_size_type size, bfd_byte * contents)
+{
+ objcopy_internal_note * pnotes_end;
+ objcopy_internal_note * pnotes = NULL;
+ objcopy_internal_note * pnote;
+ bfd_size_type remain = size;
+ unsigned version_1_seen = 0;
+ unsigned version_2_seen = 0;
+ unsigned version_3_seen = 0;
+ bfd_boolean duplicate_found = FALSE;
+ const char * err = NULL;
+ bfd_byte * in = contents;
+ int attribute_type_byte;
+ int val_start;
+ unsigned long previous_func_start = 0;
+ unsigned long previous_open_start = 0;
+ unsigned long previous_func_end = 0;
+ unsigned long previous_open_end = 0;
+ long relsize;
+
+
+ relsize = bfd_get_reloc_upper_bound (abfd, sec);
+ if (relsize > 0)
+ {
+ arelent ** relpp;
+ long relcount;
+
+ /* If there are relocs associated with this section then we
+ cannot safely merge it. */
+ relpp = (arelent **) xmalloc (relsize);
+ relcount = bfd_canonicalize_reloc (abfd, sec, relpp, isympp);
+ free (relpp);
+ if (relcount != 0)
+ goto done;
+ }
+
+ /* Make a copy of the notes and convert to our internal format.
+ Minimum size of a note is 12 bytes. */
+ pnote = pnotes = (objcopy_internal_note *) xcalloc ((size / 12), sizeof (* pnote));
+ while (remain >= 12)
+ {
+ bfd_vma start, end;
+
+ pnote->note.namesz = (bfd_get_32 (abfd, in ) + 3) & ~3;
+ pnote->note.descsz = (bfd_get_32 (abfd, in + 4) + 3) & ~3;
+ pnote->note.type = bfd_get_32 (abfd, in + 8);
+
+ if (pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_OPEN
+ && pnote->note.type != NT_GNU_BUILD_ATTRIBUTE_FUNC)
+ {
+ err = _("corrupt GNU build attribute note: wrong note type");
+ goto done;
+ }
+
+ if (pnote->note.namesz + pnote->note.descsz + 12 > remain)
+ {
+ err = _("corrupt GNU build attribute note: note too big");
+ goto done;
+ }
+
+ if (pnote->note.namesz < 2)
+ {
+ err = _("corrupt GNU build attribute note: name too small");
+ goto done;
+ }
+
+ pnote->note.namedata = (char *)(in + 12);
+ pnote->note.descdata = (char *)(in + 12 + pnote->note.namesz);
+
+ remain -= 12 + pnote->note.namesz + pnote->note.descsz;
+ in += 12 + pnote->note.namesz + pnote->note.descsz;
+
+ if (pnote->note.namesz > 2
+ && pnote->note.namedata[0] == '$'
+ && pnote->note.namedata[1] == GNU_BUILD_ATTRIBUTE_VERSION
+ && pnote->note.namedata[2] == '1')
+ ++ version_1_seen;
+ else if (pnote->note.namesz > 4
+ && pnote->note.namedata[0] == 'G'
+ && pnote->note.namedata[1] == 'A'
+ && pnote->note.namedata[2] == '$'
+ && pnote->note.namedata[3] == GNU_BUILD_ATTRIBUTE_VERSION)
+ {
+ if (pnote->note.namedata[4] == '2')
+ ++ version_2_seen;
+ else if (pnote->note.namedata[4] == '3')
+ ++ version_3_seen;
+ else
+ {
+ err = _("corrupt GNU build attribute note: unsupported version");
+ goto done;
+ }
+ }
+
+ switch (pnote->note.descsz)
+ {
+ case 0:
+ start = end = 0;
+ break;
+
+ case 4:
+ start = bfd_get_32 (abfd, pnote->note.descdata);
+ /* FIXME: For version 1 and 2 notes we should try to
+ calculate the end address by finding a symbol whose
+ value is START, and then adding in its size.
+
+ For now though, since v1 and v2 was not intended to
+ handle gaps, we chose an artificially large end
+ address. */
+ end = (bfd_vma) -1;
+ break;
+
+ case 8:
+ if (! is_64bit (abfd))
+ {
+ start = bfd_get_32 (abfd, pnote->note.descdata);
+ end = bfd_get_32 (abfd, pnote->note.descdata + 4);
+ }
+ else
+ {
+ start = bfd_get_64 (abfd, pnote->note.descdata);
+ /* FIXME: For version 1 and 2 notes we should try to
+ calculate the end address by finding a symbol whose
+ value is START, and then adding in its size.
+
+ For now though, since v1 and v2 was not intended to
+ handle gaps, we chose an artificially large end
+ address. */
+ end = (bfd_vma) -1;
+ }
+ break;
+
+ case 16:
+ start = bfd_get_64 (abfd, pnote->note.descdata);
+ end = bfd_get_64 (abfd, pnote->note.descdata + 8);
+ break;
+
+ default:
+ err = _("corrupt GNU build attribute note: bad description size");
+ goto done;
+ }
+
+ if (is_open_note (pnote))
+ {
+ if (start)
+ previous_open_start = start;
+
+ pnote->start = previous_open_start;
+
+ if (end)
+ previous_open_end = end;
+
+ pnote->end = previous_open_end;
+ }
+ else
+ {
+ if (start)
+ previous_func_start = start;
+
+ pnote->start = previous_func_start;
+
+ if (end)
+ previous_func_end = end;
+
+ pnote->end = previous_func_end;
+ }
+
+ if (pnote->note.namedata[pnote->note.namesz - 1] != 0)
+ {
+ err = _("corrupt GNU build attribute note: name not NUL terminated");
+ goto done;
+ }
+
+ pnote ++;
+ }
+
+ pnotes_end = pnote;
+
+ /* Check that the notes are valid. */
+ if (remain != 0)
+ {
+ err = _("corrupt GNU build attribute notes: excess data at end");
+ goto done;
+ }
+
+ if (version_1_seen == 0 && version_2_seen == 0 && version_3_seen == 0)
+ {
+ err = _("bad GNU build attribute notes: no known versions detected");
+ goto done;
+ }
+
+ if ((version_1_seen > 0 && version_2_seen > 0)
+ || (version_1_seen > 0 && version_3_seen > 0)
+ || (version_2_seen > 0 && version_3_seen > 0))
+ {
+ err = _("bad GNU build attribute notes: multiple different versions");
+ goto done;
+ }
+
+ /* Merging is only needed if there is more than one version note... */
+ if (version_1_seen == 1 || version_2_seen == 1 || version_3_seen == 1)
+ goto done;
+
+ attribute_type_byte = version_1_seen ? 1 : 3;
+ val_start = attribute_type_byte + 1;
+
+ /* The first note should be the first version note. */
+ if (pnotes[0].note.namedata[attribute_type_byte] != GNU_BUILD_ATTRIBUTE_VERSION)
+ {
+ err = _("bad GNU build attribute notes: first note not version note");
+ goto done;
+ }
+
+ /* Now merge the notes. The rules are:
+ 1. Preserve the ordering of the notes.
+ 2. Preserve any NT_GNU_BUILD_ATTRIBUTE_FUNC notes.
+ 3. Eliminate any NT_GNU_BUILD_ATTRIBUTE_OPEN notes that have the same
+ full name field as the immediately preceeding note with the same type
+ of name and whose address ranges coincide.
+ IE - if there are gaps in the coverage of the notes, then these gaps
+ must be preserved.
+ 4. Combine the numeric value of any NT_GNU_BUILD_ATTRIBUTE_OPEN notes
+ of type GNU_BUILD_ATTRIBUTE_STACK_SIZE.
+ 5. If an NT_GNU_BUILD_ATTRIBUTE_OPEN note is going to be preserved and
+ its description field is empty then the nearest preceeding OPEN note
+ with a non-empty description field must also be preserved *OR* the
+ description field of the note must be changed to contain the starting
+ address to which it refers.
+ 6. Notes with the same start and end address can be deleted. */
+ for (pnote = pnotes + 1; pnote < pnotes_end; pnote ++)
+ {
+ int note_type;
+ objcopy_internal_note * back;
+ objcopy_internal_note * prev_open_with_range = NULL;
+
+ /* Rule 6 - delete 0-range notes. */
+ if (pnote->start == pnote->end)
+ {
+ duplicate_found = TRUE;
+ pnote->note.type = 0;
+ continue;
+ }
+
+ /* Rule 2 - preserve function notes. */
+ if (! is_open_note (pnote))
+ {
+ int iter;
+
+ /* Check to see if there is an identical previous function note.
+ This can happen with overlays for example. */
+ for (iter = 0, back = pnote -1; back >= pnotes; back --)
+ {
+ if (back->start == pnote->start
+ && back->end == pnote->end
+ && back->note.namesz == pnote->note.namesz
+ && memcmp (back->note.namedata, pnote->note.namedata, pnote->note.namesz) == 0)
+ {
+ fprintf (stderr, "DUP FUNXC\n");
+ duplicate_found = TRUE;
+ pnote->note.type = 0;
+ break;
+ }
+
+ /* Don't scan too far back however. */
+ if (iter ++ > 16)
+ break;
+ }
+ continue;
+ }
+
+ note_type = pnote->note.namedata[attribute_type_byte];
+
+ /* Scan backwards from pnote, looking for duplicates.
+ Clear the type field of any found - but do not delete them just yet. */
+ for (back = pnote - 1; back >= pnotes; back --)
+ {
+ int back_type = back->note.namedata[attribute_type_byte];
+
+ /* If this is the first open note with an address
+ range that we have encountered then record it. */
+ if (prev_open_with_range == NULL
+ && back->note.descsz > 0
+ && ! is_func_note (back))
+ prev_open_with_range = back;
+
+ if (! is_open_note (back))
+ continue;
+
+ /* If the two notes are different then keep on searching. */
+ if (back_type != note_type)
+ continue;
+
+ /* Rule 4 - combine stack size notes. */
+ if (back_type == GNU_BUILD_ATTRIBUTE_STACK_SIZE)
+ {
+ unsigned char * name;
+ unsigned long note_val;
+ unsigned long back_val;
+ unsigned int shift;
+ unsigned int bytes;
+ unsigned long byte;
+
+ for (shift = 0, note_val = 0,
+ bytes = pnote->note.namesz - val_start,
+ name = (unsigned char *) pnote->note.namedata + val_start;
+ bytes--;)
+ {
+ byte = (* name ++) & 0xff;
+ note_val |= byte << shift;
+ shift += 8;
+ }
+
+ for (shift = 0, back_val = 0,
+ bytes = back->note.namesz - val_start,
+ name = (unsigned char *) back->note.namedata + val_start;
+ bytes--;)
+ {
+ byte = (* name ++) & 0xff;
+ back_val |= byte << shift;
+ shift += 8;
+ }
+
+ back_val += note_val;
+ if (num_bytes (back_val) >= back->note.namesz - val_start)
+ {
+ /* We have a problem - the new value requires more bytes of
+ storage in the name field than are available. Currently
+ we have no way of fixing this, so we just preserve both
+ notes. */
+ continue;
+ }
+
+ /* Write the new val into back. */
+ name = (unsigned char *) back->note.namedata + val_start;
+ while (name < (unsigned char *) back->note.namedata
+ + back->note.namesz)
+ {
+ byte = back_val & 0xff;
+ * name ++ = byte;
+ if (back_val == 0)
+ break;
+ back_val >>= 8;
+ }
+
+ duplicate_found = TRUE;
+ pnote->note.type = 0;
+ break;
+ }
+
+ /* Rule 3 - combine identical open notes. */
+ if (back->note.namesz == pnote->note.namesz
+ && memcmp (back->note.namedata,
+ pnote->note.namedata, back->note.namesz) == 0
+ && ! gap_exists (back, pnote))
+ {
+ duplicate_found = TRUE;
+ pnote->note.type = 0;
+
+ if (pnote->end > back->end)
+ back->end = pnote->end;
+
+ if (version_3_seen)
+ back->modified = TRUE;
+ break;
+ }
+
+ /* Rule 5 - Since we are keeping this note we must check to see
+ if its description refers back to an earlier OPEN version
+ note that has been scheduled for deletion. If so then we
+ must make sure that version note is also preserved. */
+ if (version_3_seen)
+ {
+ /* As of version 3 we can just
+ move the range into the note. */
+ pnote->modified = TRUE;
+ pnote->note.type = NT_GNU_BUILD_ATTRIBUTE_FUNC;
+ back->modified = TRUE;
+ back->note.type = NT_GNU_BUILD_ATTRIBUTE_FUNC;
+ }
+ else
+ {
+ if (pnote->note.descsz == 0
+ && prev_open_with_range != NULL
+ && prev_open_with_range->note.type == 0)
+ prev_open_with_range->note.type = NT_GNU_BUILD_ATTRIBUTE_OPEN;
+ }
+
+ /* We have found a similar attribute but the details do not match.
+ Stop searching backwards. */
+ break;
+ }
+ }
+
+ if (duplicate_found)
+ {
+ bfd_byte * new_contents;
+ bfd_byte * old;
+ bfd_byte * new;
+ bfd_size_type new_size;
+ bfd_vma prev_start = 0;
+ bfd_vma prev_end = 0;
+
+ /* Eliminate the duplicates. */
+ new = new_contents = xmalloc (size);
+ for (pnote = pnotes, old = contents;
+ pnote < pnotes_end;
+ pnote ++)
+ {
+ bfd_size_type note_size = 12 + pnote->note.namesz + pnote->note.descsz;
+
+ if (pnote->note.type != 0)
+ {
+ if (pnote->modified)
+ {
+ /* If the note has been modified then we must copy it by
+ hand, potentially adding in a new description field. */
+ if (pnote->start == prev_start && pnote->end == prev_end)
+ {
+ bfd_put_32 (abfd, pnote->note.namesz, new);
+ bfd_put_32 (abfd, 0, new + 4);
+ bfd_put_32 (abfd, pnote->note.type, new + 8);
+ new += 12;
+ memcpy (new, pnote->note.namedata, pnote->note.namesz);
+ new += pnote->note.namesz;
+ }
+ else
+ {
+ bfd_put_32 (abfd, pnote->note.namesz, new);
+ bfd_put_32 (abfd, is_64bit (abfd) ? 16 : 8, new + 4);
+ bfd_put_32 (abfd, pnote->note.type, new + 8);
+ new += 12;
+ memcpy (new, pnote->note.namedata, pnote->note.namesz);
+ new += pnote->note.namesz;
+ if (is_64bit (abfd))
+ {
+ bfd_put_64 (abfd, pnote->start, new);
+ bfd_put_64 (abfd, pnote->end, new + 8);
+ new += 16;
+ }
+ else
+ {
+ bfd_put_32 (abfd, pnote->start, new);
+ bfd_put_32 (abfd, pnote->end, new + 4);
+ new += 8;
+ }
+ }
+ }
+ else
+ {
+ memcpy (new, old, note_size);
+ new += note_size;
+ }
+ prev_start = pnote->start;
+ prev_end = pnote->end;
+ }
+
+ old += note_size;
+ }
+
+ new_size = new - new_contents;
+ memcpy (contents, new_contents, new_size);
+ size = new_size;
+ free (new_contents);
+ }
+
+ done:
+ if (err)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ bfd_nonfatal_message (NULL, abfd, sec, err);
+ status = 1;
+ }
+
+ free (pnotes);
+ return size;
+}
+
/* Copy object file IBFD onto OBFD.
Returns TRUE upon success, FALSE otherwise. */
bfd_vma start;
long symcount;
asection **osections = NULL;
+ asection *osec;
asection *gnu_debuglink_section = NULL;
bfd_size_type *gaps = NULL;
bfd_size_type max_gap = 0;
pupdate != NULL;
pupdate = pupdate->next)
{
- asection *osec;
-
pupdate->section = bfd_get_section_by_name (ibfd, pupdate->name);
if (pupdate->section == NULL)
{
}
}
+ if (merge_notes)
+ {
+ /* This palaver is necessary because we must set the output
+ section size first, before its contents are ready. */
+ osec = bfd_get_section_by_name (ibfd, GNU_BUILD_ATTRS_SECTION_NAME);
+ if (osec && is_merged_note_section (ibfd, osec))
+ {
+ bfd_size_type size;
+
+ size = bfd_get_section_size (osec);
+ if (size == 0)
+ {
+ bfd_nonfatal_message (NULL, ibfd, osec, _("warning: note section is empty"));
+ merge_notes = FALSE;
+ }
+ else if (! bfd_get_full_section_contents (ibfd, osec, & merged_notes))
+ {
+ bfd_nonfatal_message (NULL, ibfd, osec, _("warning: could not load note section"));
+ free (merged_notes);
+ merged_notes = NULL;
+ merge_notes = FALSE;
+ }
+ else
+ {
+ merged_size = merge_gnu_build_notes (ibfd, osec, size, merged_notes);
+ if (merged_size == size)
+ {
+ /* Merging achieves nothing. */
+ free (merged_notes);
+ merged_notes = NULL;
+ merge_notes = FALSE;
+ merged_size = 0;
+ }
+ else
+ {
+ if (osec->output_section == NULL
+ || ! bfd_set_section_size (obfd, osec->output_section, merged_size))
+ {
+ bfd_nonfatal_message (NULL, obfd, osec, _("warning: failed to set merged notes size"));
+ free (merged_notes);
+ merged_notes = NULL;
+ merge_notes = FALSE;
+ merged_size = 0;
+ }
+ }
+ }
+ }
+ }
+
if (dump_sections != NULL)
{
struct section_add * pdump;
for (pdump = dump_sections; pdump != NULL; pdump = pdump->next)
{
- asection * sec;
-
- sec = bfd_get_section_by_name (ibfd, pdump->name);
- if (sec == NULL)
+ osec = bfd_get_section_by_name (ibfd, pdump->name);
+ if (osec == NULL)
{
bfd_nonfatal_message (NULL, ibfd, NULL,
_("can't dump section '%s' - it does not exist"),
continue;
}
- if ((bfd_get_section_flags (ibfd, sec) & SEC_HAS_CONTENTS) == 0)
+ if ((bfd_get_section_flags (ibfd, osec) & SEC_HAS_CONTENTS) == 0)
{
- bfd_nonfatal_message (NULL, ibfd, sec,
+ bfd_nonfatal_message (NULL, ibfd, osec,
_("can't dump section - it has no contents"));
continue;
}
- bfd_size_type size = bfd_get_section_size (sec);
+ bfd_size_type size = bfd_get_section_size (osec);
if (size == 0)
{
- bfd_nonfatal_message (NULL, ibfd, sec,
+ bfd_nonfatal_message (NULL, ibfd, osec,
_("can't dump section - it is empty"));
continue;
}
continue;
}
- bfd_byte * contents = xmalloc (size);
- if (bfd_get_section_contents (ibfd, sec, contents, 0, size))
+ bfd_byte *contents;
+ if (bfd_malloc_and_get_section (ibfd, osec, &contents))
{
if (fwrite (contents, 1, size, f) != size)
{
non_fatal (_("error writing section contents to %s (error: %s)"),
pdump->filename,
strerror (errno));
+ free (contents);
+ fclose (f);
return FALSE;
}
}
else
- bfd_nonfatal_message (NULL, ibfd, sec,
+ bfd_nonfatal_message (NULL, ibfd, osec,
_("could not retrieve section contents"));
fclose (f);
{
bfd_vma debuglink_vma;
asection * highest_section;
- asection * sec;
/* The PE spec requires that all sections be adjacent and sorted
in ascending order of VMA. It also specifies that debug
VMA which makes it contiguous with other debug sections. So
walk the current section list, find the section with the
highest VMA and start the debuglink section after that one. */
- for (sec = obfd->sections, highest_section = NULL;
- sec != NULL;
- sec = sec->next)
- if (sec->vma > 0
+ for (osec = obfd->sections, highest_section = NULL;
+ osec != NULL;
+ osec = osec->next)
+ if (osec->vma > 0
&& (highest_section == NULL
- || sec->vma > highest_section->vma))
- highest_section = sec;
+ || osec->vma > highest_section->vma))
+ highest_section = osec;
if (highest_section)
debuglink_vma = BFD_ALIGN (highest_section->vma
|| htab_elements (globalize_specific_htab) != 0
|| htab_elements (keepglobal_specific_htab) != 0
|| htab_elements (weaken_specific_htab) != 0
+ || htab_elements (redefine_specific_htab) != 0
|| prefix_symbols_string
|| sections_removed
|| sections_copied
|| convert_debugging
|| change_leading_char
|| remove_leading_char
- || redefine_sym_list
+ || section_rename_list
|| weaken
|| add_symbols)
{
ignore input sections which have no corresponding output
section. */
if (strip_symbols != STRIP_ALL)
- bfd_map_over_sections (ibfd,
- mark_symbols_used_in_relocations,
- isympp);
+ {
+ bfd_set_error (bfd_error_no_error);
+ bfd_map_over_sections (ibfd,
+ mark_symbols_used_in_relocations,
+ isympp);
+ if (bfd_get_error () != bfd_error_no_error)
+ {
+ status = 1;
+ return FALSE;
+ }
+ }
+
osympp = (asymbol **) xmalloc ((symcount + add_symbols + 1) * sizeof (asymbol *));
symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
}
if (convert_debugging && dhandle != NULL)
{
- if (! write_debugging_info (obfd, dhandle, &symcount, &osympp))
+ bfd_boolean res;
+
+ res = write_debugging_info (obfd, dhandle, &symcount, &osympp);
+
+ free (dhandle);
+ dhandle = NULL; /* Paranoia... */
+
+ if (! res)
{
status = 1;
return FALSE;
pupdate != NULL;
pupdate = pupdate->next)
{
- asection *osec;
-
osec = pupdate->section->output_section;
if (! bfd_set_section_contents (obfd, osec, pupdate->contents,
0, pupdate->size))
}
}
+ if (merge_notes)
+ {
+ osec = bfd_get_section_by_name (obfd, GNU_BUILD_ATTRS_SECTION_NAME);
+ if (osec && is_merged_note_section (obfd, osec))
+ {
+ if (! bfd_set_section_contents (obfd, osec, merged_notes, 0, merged_size))
+ {
+ bfd_nonfatal_message (NULL, obfd, osec, _("error: failed to copy merged notes into output"));
+ return FALSE;
+ }
+ }
+ else if (! is_strip)
+ bfd_nonfatal_message (NULL, obfd, osec, _("could not find any mergeable note sections"));
+ free (merged_notes);
+ merged_notes = NULL;
+ merge_notes = FALSE;
+ }
+
if (gnu_debuglink_filename != NULL)
{
if (! bfd_fill_in_gnu_debuglink_section
off, now))
{
bfd_nonfatal_message (NULL, obfd, osections[i], NULL);
+ free (buf);
return FALSE;
}
}
}
}
+
+ free (buf);
+ free (gaps);
+ gaps = NULL;
}
/* Allow the BFD backend to copy any private data it understands
char *dir;
const char *filename;
+ /* PR 24281: It is not clear what should happen when copying a thin archive.
+ One part is straight forward - if the output archive is in a different
+ directory from the input archive then any relative paths in the library
+ should be adjusted to the new location. But if any transformation
+ options are active (eg strip, rename, add, etc) then the implication is
+ that these should be applied to the files pointed to by the archive.
+ But since objcopy is not destructive, this means that new files must be
+ created, and there is no guidance for the names of the new files. (Plus
+ this conflicts with one of the goals of thin libraries - only taking up
+ a minimal amount of space in the file system).
+
+ So for now we fail if an attempt is made to copy such libraries. */
+ if (ibfd->is_thin_archive)
+ {
+ status = 1;
+ bfd_set_error (bfd_error_invalid_operation);
+ bfd_nonfatal_message (NULL, ibfd, NULL,
+ _("sorry: copying thin archives is not currently supported"));
+ return;
+ }
+
/* Make a temp directory to hold the contents. */
dir = make_tempdir (bfd_get_filename (obfd));
if (dir == NULL)
/* If the file already exists, make another temp dir. */
if (stat (output_name, &buf) >= 0)
{
- output_name = make_tempdir (output_name);
- if (output_name == NULL)
+ char * tmpdir = make_tempdir (output_name);
+
+ free (output_name);
+ if (tmpdir == NULL)
{
non_fatal (_("cannot create tempdir for archive copying (error: %s)"),
strerror (errno));
}
l = (struct name_list *) xmalloc (sizeof (struct name_list));
- l->name = output_name;
+ l->name = tmpdir;
l->next = list;
l->obfd = NULL;
list = l;
- output_name = concat (output_name, "/",
+ output_name = concat (tmpdir, "/",
bfd_get_filename (this_element), (char *) 0);
}
cleanup_and_exit:
/* Delete all the files that we opened. */
- for (l = list; l != NULL; l = l->next)
- {
- if (l->obfd == NULL)
- rmdir (l->name);
- else
- {
- bfd_close (l->obfd);
- unlink (l->name);
- }
- }
+ {
+ struct name_list * next;
+
+ for (l = list; l != NULL; l = next)
+ {
+ if (l->obfd == NULL)
+ rmdir (l->name);
+ else
+ {
+ bfd_close (l->obfd);
+ unlink (l->name);
+ }
+ next = l->next;
+ free (l);
+ }
+ }
rmdir (dir);
}
}
/* Check the section rename list for a new name of the input section
- ISECTION. Return the new name if one is found.
- Also set RETURNED_FLAGS to the flags to be used for this section. */
+ called OLD_NAME. Returns the new name if one is found and sets
+ RETURNED_FLAGS if non-NULL to the flags to be used for this section. */
static const char *
-find_section_rename (bfd * ibfd ATTRIBUTE_UNUSED, sec_ptr isection,
- flagword * returned_flags)
+find_section_rename (const char *old_name, flagword *returned_flags)
{
- const char * old_name = bfd_section_name (ibfd, isection);
- section_rename * srename;
-
- /* Default to using the flags of the input section. */
- * returned_flags = bfd_get_section_flags (ibfd, isection);
+ const section_rename *srename;
for (srename = section_rename_list; srename != NULL; srename = srename->next)
if (strcmp (srename->old_name, old_name) == 0)
{
- if (srename->flags != (flagword) -1)
- * returned_flags = srename->flags;
+ if (returned_flags != NULL && srename->flags != (flagword) -1)
+ *returned_flags = srename->flags;
return srename->new_name;
}
return;
/* Get the, possibly new, name of the output section. */
- name = find_section_rename (ibfd, isection, & flags);
+ name = bfd_section_name (ibfd, isection);
+ flags = bfd_get_section_flags (ibfd, isection);
+ name = find_section_rename (name, &flags);
/* Prefix sections. */
if ((prefix_alloc_sections_string)
/* Return TRUE if input section ISECTION should be skipped. */
static bfd_boolean
-skip_section (bfd *ibfd, sec_ptr isection)
+skip_section (bfd *ibfd, sec_ptr isection, bfd_boolean skip_copy)
{
sec_ptr osection;
bfd_size_type size;
if (is_update_section (ibfd, isection))
return TRUE;
+ /* When merging a note section we skip the copying of the contents,
+ but not the copying of the relocs associated with the contents. */
+ if (skip_copy && is_merged_note_section (ibfd, isection))
+ return TRUE;
+
flags = bfd_get_section_flags (ibfd, isection);
if ((flags & SEC_GROUP) != 0)
return TRUE;
return FALSE;
}
+/* Add section SECTION_PATTERN to the list of sections that will have their
+ relocations removed. */
+
+static void
+handle_remove_relocations_option (const char *section_pattern)
+{
+ find_section_list (section_pattern, TRUE, SECTION_CONTEXT_REMOVE_RELOCS);
+}
+
+/* Return TRUE if ISECTION from IBFD should have its relocations removed,
+ otherwise return FALSE. If the user has requested that relocations be
+ removed from a section that does not have relocations then this
+ function will still return TRUE. */
+
+static bfd_boolean
+discard_relocations (bfd *ibfd ATTRIBUTE_UNUSED, asection *isection)
+{
+ return (find_section_list (bfd_section_name (ibfd, isection), FALSE,
+ SECTION_CONTEXT_REMOVE_RELOCS) != NULL);
+}
+
+/* Wrapper for dealing with --remove-section (-R) command line arguments.
+ A special case is detected here, if the user asks to remove a relocation
+ section (one starting with ".rela" or ".rel") then this removal must
+ be done using a different technique in a relocatable object. */
+
+static void
+handle_remove_section_option (const char *section_pattern)
+{
+ find_section_list (section_pattern, TRUE, SECTION_CONTEXT_REMOVE);
+ if (strncmp (section_pattern, ".rel", 4) == 0)
+ {
+ section_pattern += 4;
+ if (*section_pattern == 'a')
+ section_pattern++;
+ if (*section_pattern)
+ handle_remove_relocations_option (section_pattern);
+ }
+ sections_removed = TRUE;
+}
+
/* Copy relocations in input section ISECTION of IBFD to an output
section with the same name in OBFDARG. If stripping then don't
copy any relocation info. */
long relcount;
sec_ptr osection;
- if (skip_section (ibfd, isection))
+ if (skip_section (ibfd, isection, FALSE))
return;
osection = isection->output_section;
/* Core files and DWO files do not need to be relocated. */
- if (bfd_get_format (obfd) == bfd_core || strip_symbols == STRIP_NONDWO)
+ if (bfd_get_format (obfd) == bfd_core
+ || strip_symbols == STRIP_NONDWO
+ || discard_relocations (ibfd, isection))
relsize = 0;
else
{
}
else
{
- relpp = (arelent **) xmalloc (relsize);
- relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp);
- if (relcount < 0)
+ if (isection->orelocation != NULL)
{
- status = 1;
- bfd_nonfatal_message (NULL, ibfd, isection,
- _("relocation count is negative"));
- return;
+ /* Some other function has already set up the output relocs
+ for us, so scan those instead of the default relocs. */
+ relcount = isection->reloc_count;
+ relpp = isection->orelocation;
+ }
+ else
+ {
+ relpp = (arelent **) xmalloc (relsize);
+ relcount = bfd_canonicalize_reloc (ibfd, isection, relpp, isympp);
+ if (relcount < 0)
+ {
+ status = 1;
+ bfd_nonfatal_message (NULL, ibfd, isection,
+ _("relocation count is negative"));
+ return;
+ }
}
if (strip_symbols == STRIP_ALL)
temp_relpp [temp_relcount++] = relpp [i];
}
relcount = temp_relcount;
- free (relpp);
+ if (isection->orelocation == NULL)
+ free (relpp);
relpp = temp_relpp;
}
sec_ptr osection;
bfd_size_type size;
- if (skip_section (ibfd, isection))
+ if (skip_section (ibfd, isection, TRUE))
return;
osection = isection->output_section;
{
status = 1;
bfd_nonfatal_message (NULL, ibfd, isection, NULL);
+ free (memhunk);
return;
}
char *end = (char *) memhunk + size;
int i;
+ /* If the section address is not exactly divisible by the interleave,
+ then we must bias the from address. If the copy_byte is less than
+ the bias, then we must skip forward one interleave, and increment
+ the final lma. */
+ int extra = isection->lma % interleave;
+ from -= extra;
+ if (copy_byte < extra)
+ from += interleave;
+
for (; from < end; from += interleave)
for (i = 0; i < copy_width; i++)
{
size = (size + interleave - 1 - copy_byte) / interleave * copy_width;
osection->lma /= interleave;
+ if (copy_byte < extra)
+ osection->lma++;
}
if (!bfd_set_section_contents (obfd, osection, memhunk, 0, size))
{
status = 1;
bfd_nonfatal_message (NULL, obfd, osection, NULL);
+ free (memhunk);
return;
}
free (memhunk);
{
status = 1;
bfd_nonfatal_message (NULL, obfd, osection, NULL);
+ free (memhunk);
return;
}
free (memhunk);
special bfd section symbols, then mark it with BSF_KEEP. */
for (i = 0; i < relcount; i++)
{
- if (*relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol
+ /* See PRs 20923 and 20930 for reproducers for the NULL tests. */
+ if (relpp[i]->sym_ptr_ptr != NULL
+ && * relpp[i]->sym_ptr_ptr != NULL
+ && *relpp[i]->sym_ptr_ptr != bfd_com_section_ptr->symbol
&& *relpp[i]->sym_ptr_ptr != bfd_abs_section_ptr->symbol
&& *relpp[i]->sym_ptr_ptr != bfd_und_section_ptr->symbol)
(*relpp[i]->sym_ptr_ptr)->flags |= BSF_KEEP;
long *symcountp ATTRIBUTE_UNUSED,
asymbol ***symppp ATTRIBUTE_UNUSED)
{
- if (bfd_get_flavour (obfd) == bfd_target_ieee_flavour)
- return write_ieee_debugging_info (obfd, dhandle);
-
if (bfd_get_flavour (obfd) == bfd_target_coff_flavour
|| bfd_get_flavour (obfd) == bfd_target_elf_flavour)
{
- bfd_byte *syms, *strings;
+ bfd_byte *syms, *strings = NULL;
bfd_size_type symsize, stringsize;
asection *stabsec, *stabstrsec;
flagword flags;
{
bfd_nonfatal_message (NULL, obfd, NULL,
_("can't create debugging section"));
+ free (strings);
return FALSE;
}
{
bfd_nonfatal_message (NULL, obfd, NULL,
_("can't set debugging section contents"));
+ free (strings);
return FALSE;
}
int c;
int i;
char *output_file = NULL;
+ bfd_boolean merge_notes_set = FALSE;
- while ((c = getopt_long (argc, argv, "I:O:F:K:N:R:o:sSpdgxXHhVvwDU",
+ while ((c = getopt_long (argc, argv, "I:O:F:K:MN:R:o:sSpdgxXHhVvwDU",
strip_options, (int *) 0)) != EOF)
{
switch (c)
input_target = output_target = optarg;
break;
case 'R':
- find_section_list (optarg, TRUE, SECTION_CONTEXT_REMOVE);
- sections_removed = TRUE;
+ handle_remove_section_option (optarg);
+ break;
+ case OPTION_REMOVE_RELOCS:
+ handle_remove_relocations_option (optarg);
break;
case 's':
strip_symbols = STRIP_ALL;
case 'K':
add_specific_symbol (optarg, keep_specific_htab);
break;
+ case 'M':
+ merge_notes = TRUE;
+ merge_notes_set = TRUE;
+ break;
+ case OPTION_NO_MERGE_NOTES:
+ merge_notes = FALSE;
+ merge_notes_set = TRUE;
+ break;
case 'N':
add_specific_symbol (optarg, strip_specific_htab);
break;
}
}
+ /* If the user has not expressly chosen to merge/not-merge ELF notes
+ then enable the merging unless we are stripping debug or dwo info. */
+ if (! merge_notes_set
+ && (strip_symbols == STRIP_UNDEF
+ || strip_symbols == STRIP_ALL
+ || strip_symbols == STRIP_UNNEEDED
+ || strip_symbols == STRIP_NONDEBUG
+ || strip_symbols == STRIP_NONDWO))
+ merge_notes = TRUE;
+
if (formats_info)
{
display_info ();
bfd_boolean show_version = FALSE;
bfd_boolean change_warn = TRUE;
bfd_boolean formats_info = FALSE;
+ bfd_boolean use_globalize = FALSE;
+ bfd_boolean use_keep_global = FALSE;
int c;
struct stat statbuf;
const bfd_arch_info_type *input_arch = NULL;
- while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:N:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
+ while ((c = getopt_long (argc, argv, "b:B:i:I:j:K:MN:s:O:d:F:L:G:R:SpgxXHhVvW:wDU",
copy_options, (int *) 0)) != EOF)
{
switch (c)
break;
case 'R':
- find_section_list (optarg, TRUE, SECTION_CONTEXT_REMOVE);
- sections_removed = TRUE;
+ handle_remove_section_option (optarg);
+ break;
+
+ case OPTION_REMOVE_RELOCS:
+ handle_remove_relocations_option (optarg);
break;
case 'S':
add_specific_symbol (optarg, keep_specific_htab);
break;
+ case 'M':
+ merge_notes = TRUE;
+ break;
+ case OPTION_NO_MERGE_NOTES:
+ merge_notes = FALSE;
+ break;
+
case 'N':
add_specific_symbol (optarg, strip_specific_htab);
break;
break;
case OPTION_GLOBALIZE_SYMBOL:
+ use_globalize = TRUE;
add_specific_symbol (optarg, globalize_specific_htab);
break;
case 'G':
+ use_keep_global = TRUE;
add_specific_symbol (optarg, keepglobal_specific_htab);
break;
{
case OPTION_CHANGE_SECTION_ADDRESS:
p->vma_val = val;
- /* Drop through. */
+ /* Fall through. */
case OPTION_CHANGE_SECTION_LMA:
p->lma_val = val;
case OPTION_REDEFINE_SYM:
{
- /* Push this redefinition onto redefine_symbol_list. */
+ /* Insert this redefinition onto redefine_specific_htab. */
int len;
const char *s;
target = (char *) xmalloc (len + 1);
strcpy (target, nextarg);
- redefine_list_append ("--redefine-sym", source, target);
+ add_redefine_and_check ("--redefine-sym", source, target);
free (source);
free (target);
break;
case OPTION_SREC_LEN:
- Chunk = parse_vma (optarg, "--srec-len");
+ _bfd_srec_len = parse_vma (optarg, "--srec-len");
break;
case OPTION_SREC_FORCES3:
- S3Forced = TRUE;
+ _bfd_srec_forceS3 = TRUE;
break;
case OPTION_STRIP_SYMBOLS:
- add_specific_symbols (optarg, strip_specific_htab);
+ add_specific_symbols (optarg, strip_specific_htab,
+ &strip_specific_buffer);
break;
case OPTION_STRIP_UNNEEDED_SYMBOLS:
- add_specific_symbols (optarg, strip_unneeded_htab);
+ add_specific_symbols (optarg, strip_unneeded_htab,
+ &strip_unneeded_buffer);
break;
case OPTION_KEEP_SYMBOLS:
- add_specific_symbols (optarg, keep_specific_htab);
+ add_specific_symbols (optarg, keep_specific_htab,
+ &keep_specific_buffer);
break;
case OPTION_LOCALIZE_HIDDEN:
break;
case OPTION_LOCALIZE_SYMBOLS:
- add_specific_symbols (optarg, localize_specific_htab);
+ add_specific_symbols (optarg, localize_specific_htab,
+ &localize_specific_buffer);
break;
case OPTION_LONG_SECTION_NAMES:
break;
case OPTION_GLOBALIZE_SYMBOLS:
- add_specific_symbols (optarg, globalize_specific_htab);
+ use_globalize = TRUE;
+ add_specific_symbols (optarg, globalize_specific_htab,
+ &globalize_specific_buffer);
break;
case OPTION_KEEPGLOBAL_SYMBOLS:
- add_specific_symbols (optarg, keepglobal_specific_htab);
+ use_keep_global = TRUE;
+ add_specific_symbols (optarg, keepglobal_specific_htab,
+ &keepglobal_specific_buffer);
break;
case OPTION_WEAKEN_SYMBOLS:
- add_specific_symbols (optarg, weaken_specific_htab);
+ add_specific_symbols (optarg, weaken_specific_htab,
+ &weaken_specific_buffer);
break;
case OPTION_ALT_MACH_CODE:
}
break;
+ case OPTION_VERILOG_DATA_WIDTH:
+ VerilogDataWidth = parse_vma (optarg, "--verilog-data-width");
+ if (VerilogDataWidth < 1)
+ fatal (_("verilog data width must be at least 1 byte"));
+ break;
+
case 0:
/* We've been given a long option. */
break;
}
}
+ if (use_globalize && use_keep_global)
+ fatal(_("--globalize-symbol(s) is incompatible with -G/--keep-global-symbol(s)"));
+
if (formats_info)
{
display_info ();
else
unlink_if_ordinary (tmpname);
+ if (tmpname != output_filename)
+ free (tmpname);
+
if (change_warn)
{
struct section_list *p;
}
}
+ if (strip_specific_buffer)
+ free (strip_specific_buffer);
+
+ if (strip_unneeded_buffer)
+ free (strip_unneeded_buffer);
+
+ if (keep_specific_buffer)
+ free (keep_specific_buffer);
+
+ if (localize_specific_buffer)
+ free (globalize_specific_buffer);
+
+ if (globalize_specific_buffer)
+ free (globalize_specific_buffer);
+
+ if (keepglobal_specific_buffer)
+ free (keepglobal_specific_buffer);
+
+ if (weaken_specific_buffer)
+ free (weaken_specific_buffer);
+
return 0;
}
strip_symbols = STRIP_UNDEF;
discard_locals = LOCALS_UNDEF;
- bfd_init ();
+ if (bfd_init () != BFD_INIT_MAGIC)
+ fatal (_("fatal error: libbfd ABI mismatch"));
set_default_bfd_target ();
if (is_strip < 0)
projects / external / binutils.git / blobdiff