/* COFF specific linker code.
- Copyright 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
#include "coff/internal.h"
#include "libcoff.h"
-#define STRING_SIZE_SIZE (4)
-
-/* Information we keep for each section in the output file when doing
- a relocateable link. */
-
-struct coff_link_section_info
-{
- /* The relocs to be output. */
- struct internal_reloc *relocs;
- /* For each reloc against a global symbol whose index was not known
- when the reloc was handled, the global hash table entry. */
- struct coff_link_hash_entry **rel_hashes;
-};
-
-/* Information that we pass around while doing the final link step. */
-
-struct coff_final_link_info
-{
- /* General link information. */
- struct bfd_link_info *info;
- /* Output BFD. */
- bfd *output_bfd;
- /* Used to indicate failure in traversal routine. */
- boolean failed;
- /* Hash table for long symbol name. */
- struct bfd_strtab_hash *strtab;
- /* When doing a relocateable link, an array of information kept for
- each output section, indexed by the target_index field. */
- struct coff_link_section_info *section_info;
- /* Symbol index of last C_FILE symbol (-1 if none). */
- long last_file_index;
- /* Contents of last C_FILE symbol. */
- struct internal_syment last_file;
- /* Buffer large enough to hold swapped symbols of any input file. */
- struct internal_syment *internal_syms;
- /* Buffer large enough to hold sections of symbols of any input file. */
- asection **sec_ptrs;
- /* Buffer large enough to hold output indices of symbols of any
- input file. */
- long *sym_indices;
- /* Buffer large enough to hold output symbols for any input file. */
- bfd_byte *outsyms;
- /* Buffer large enough to hold external line numbers for any input
- section. */
- bfd_byte *linenos;
- /* Buffer large enough to hold any input section. */
- bfd_byte *contents;
- /* Buffer large enough to hold external relocs of any input section. */
- bfd_byte *external_relocs;
- /* Buffer large enough to hold swapped relocs of any input section. */
- struct internal_reloc *internal_relocs;
-
-enum bfd_link_subsystem subsystem;
-bfd_link_stack_heap stack_heap_parameters;
-};
-
-static struct bfd_hash_entry *coff_link_hash_newfunc
- PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static boolean coff_link_add_object_symbols
PARAMS ((bfd *, struct bfd_link_info *));
static boolean coff_link_check_archive_element
PARAMS ((bfd *, struct bfd_link_info *, boolean *));
-static INLINE const char *_bfd_coff_internal_syment_name
- PARAMS ((bfd *, const struct internal_syment *, char *));
static boolean coff_link_check_ar_symbols
PARAMS ((bfd *, struct bfd_link_info *, boolean *));
static boolean coff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *));
-static boolean coff_link_input_bfd
- PARAMS ((struct coff_final_link_info *, bfd *));
-static boolean coff_write_global_sym
- PARAMS ((struct coff_link_hash_entry *, PTR));
-static boolean coff_reloc_link_order
- PARAMS ((bfd *, struct coff_final_link_info *, asection *,
- struct bfd_link_order *));
-
-
-/* These new data and data types are used to keep track of the .idata$4 and
- .idata$5 relocations which are put into the .idata section for all of the
- *.dll input libraries linked in. This is not a great solution, and may
- break in the future if MS changes the format of its libraries, but it
- does work for the collection of mstools libraries we are currently working
- with. The main problem is that there are some new majic symbols defined
- in the libraries which are non-standard coff and simply aren't handled
- completely by ld. What has been included here will help finish up the job.
- Basically, during the link, .idata$4 and .idata$5 pointers are correctly
- relocated to the image. At the very end of the link, the .idata$2
- information is written. This data appears at the beginning of the .idata
- section and a 'set' of information appears for each *.dll passed in.
- Each set of information consists of 3 addresses, a pointer to the .idata$4
- start, a pointer to .idata$6 (which has the name of the dll), and a pointer
- to .idata$5 start. The idata$4 and 5 information is a list of pointers
- which appear to point to the name of various functions found within the dll.
- When invoked, the loader will write over these names with the correct
- addresses to use for these functions.
- Without this 'fix', all information appears correctly except for the
- addresses of the .idata$4 and 5 starts within the .idata$2 portion of the
- .idata section. What we will do is to keep track of the dll's processed
- and the number of functions needed from each dll. From this information
- we can correctly compute the start of the idata$4 and 5 lists for each
- dll in the idata section */
-static int num_DLLs_done = 0;
-static int num_DLLs = 0;
-static int all_entries = 0;
-struct DLL_struct {
- const char * DLL_name;
- int num_entries;
-};
-struct DLL_struct MS_DLL[10];
-static bfd_vma idata_4_prev = 0;
-static bfd_vma idata_5_prev = 0;
-static bfd_vma add_to_val = 0;
-
+static char *dores_com PARAMS ((char *, bfd *, int));
+static char *get_name PARAMS ((char *, char **));
+static int process_embedded_commands
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *));
+static void mark_relocs PARAMS ((struct coff_final_link_info *, bfd *));
+
+/* Return true if SYM is a weak, external symbol. */
+#define IS_WEAK_EXTERNAL(abfd, sym) \
+ ((sym).n_sclass == C_WEAKEXT \
+ || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK))
+
+/* Return true if SYM is an external symbol. */
+#define IS_EXTERNAL(abfd, sym) \
+ ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))
+
+/* Define macros so that the ISFCN, et. al., macros work correctly.
+ These macros are defined in include/coff/internal.h in terms of
+ N_TMASK, etc. These definitions require a user to define local
+ variables with the appropriate names, and with values from the
+ coff_data (abfd) structure. */
+#define N_TMASK n_tmask
+#define N_BTSHFT n_btshft
+#define N_BTMASK n_btmask
/* Create an entry in a COFF linker hash table. */
-static struct bfd_hash_entry *
-coff_link_hash_newfunc (entry, table, string)
+struct bfd_hash_entry *
+_bfd_coff_link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
ret = ((struct coff_link_hash_entry *)
bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry)));
if (ret == (struct coff_link_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_hash_entry *) ret;
- }
+ return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct coff_link_hash_entry *)
return (struct bfd_hash_entry *) ret;
}
+/* Initialize a COFF linker hash table. */
+
+boolean
+_bfd_coff_link_hash_table_init (table, abfd, newfunc)
+ struct coff_link_hash_table *table;
+ bfd *abfd;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+{
+ table->stab_info = NULL;
+ return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
+}
+
/* Create a COFF linker hash table. */
struct bfd_link_hash_table *
bfd *abfd;
{
struct coff_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct coff_link_hash_table);
- ret = ((struct coff_link_hash_table *)
- bfd_alloc (abfd, sizeof (struct coff_link_hash_table)));
+ ret = (struct coff_link_hash_table *) bfd_malloc (amt);
if (ret == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
- if (! _bfd_link_hash_table_init (&ret->root, abfd,
- coff_link_hash_newfunc))
+ return NULL;
+ if (! _bfd_coff_link_hash_table_init (ret, abfd,
+ _bfd_coff_link_hash_newfunc))
{
free (ret);
return (struct bfd_link_hash_table *) NULL;
return &ret->root;
}
+/* Create an entry in a COFF debug merge hash table. */
+
+struct bfd_hash_entry *
+_bfd_coff_debug_merge_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct coff_debug_merge_hash_entry *ret =
+ (struct coff_debug_merge_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct coff_debug_merge_hash_entry *) NULL)
+ ret = ((struct coff_debug_merge_hash_entry *)
+ bfd_hash_allocate (table,
+ sizeof (struct coff_debug_merge_hash_entry)));
+ if (ret == (struct coff_debug_merge_hash_entry *) NULL)
+ return (struct bfd_hash_entry *) ret;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct coff_debug_merge_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+ if (ret != (struct coff_debug_merge_hash_entry *) NULL)
+ {
+ /* Set local fields. */
+ ret->types = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
/* Given a COFF BFD, add symbols to the global hash table as
appropriate. */
return false;
if (! coff_link_add_symbols (abfd, info))
return false;
+
if (! info->keep_memory)
{
if (! _bfd_coff_free_symbols (abfd))
return true;
}
-/* Get the name of a symbol. The caller must pass in a buffer of size
- >= SYMNMLEN + 1. */
-
-static INLINE const char *
-_bfd_coff_internal_syment_name (abfd, sym, buf)
- bfd *abfd;
- const struct internal_syment *sym;
- char *buf;
-{
- /* FIXME: It's not clear this will work correctly if sizeof
- (_n_zeroes) != 4. */
- if (sym->_n._n_n._n_zeroes != 0
- || sym->_n._n_n._n_offset == 0)
- {
- memcpy (buf, sym->_n._n_name, SYMNMLEN);
- buf[SYMNMLEN] = '\0';
- return buf;
- }
- else
- {
- const char *strings;
-
- BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE);
- strings = obj_coff_strings (abfd);
- if (strings == NULL)
- {
- strings = _bfd_coff_read_string_table (abfd);
- if (strings == NULL)
- return NULL;
- }
- return strings + sym->_n._n_n._n_offset;
- }
-}
-
/* Look through the symbols to see if this object file should be
included in the link. */
struct bfd_link_info *info;
boolean *pneeded;
{
- boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
bfd_size_type symesz;
bfd_byte *esym;
bfd_byte *esym_end;
*pneeded = false;
- sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global;
-
symesz = bfd_coff_symesz (abfd);
esym = (bfd_byte *) obj_coff_external_syms (abfd);
esym_end = esym + obj_raw_syment_count (abfd) * symesz;
while (esym < esym_end)
{
struct internal_syment sym;
+ enum coff_symbol_classification classification;
bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
- if ((sym.n_sclass == C_EXT
- || (sym_is_global && (*sym_is_global) (abfd, &sym)))
- && (sym.n_scnum != 0 || sym.n_value != 0))
+ classification = bfd_coff_classify_symbol (abfd, &sym);
+ if (classification == COFF_SYMBOL_GLOBAL
+ || classification == COFF_SYMBOL_COMMON)
{
const char *name;
char buf[SYMNMLEN + 1];
return false;
h = bfd_link_hash_lookup (info->hash, name, false, false, true);
+ /* auto import */
+ if (!h && info->pei386_auto_import)
+ {
+ if (!strncmp (name,"__imp_", 6))
+ {
+ h =
+ bfd_link_hash_lookup (info->hash, name + 6, false, false,
+ true);
+ }
+ }
/* We are only interested in symbols that are currently
undefined. If a symbol is currently known to be common,
COFF linkers do not bring in an object file which defines
bfd *abfd;
struct bfd_link_info *info;
{
- boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
+ unsigned int n_tmask = coff_data (abfd)->local_n_tmask;
+ unsigned int n_btshft = coff_data (abfd)->local_n_btshft;
+ unsigned int n_btmask = coff_data (abfd)->local_n_btmask;
+ boolean keep_syms;
boolean default_copy;
bfd_size_type symcount;
struct coff_link_hash_entry **sym_hash;
bfd_size_type symesz;
bfd_byte *esym;
bfd_byte *esym_end;
+ bfd_size_type amt;
- sym_is_global = coff_backend_info (abfd)->_bfd_coff_sym_is_global;
+ /* Keep the symbols during this function, in case the linker needs
+ to read the generic symbols in order to report an error message. */
+ keep_syms = obj_coff_keep_syms (abfd);
+ obj_coff_keep_syms (abfd) = true;
if (info->keep_memory)
default_copy = false;
/* We keep a list of the linker hash table entries that correspond
to particular symbols. */
- sym_hash = ((struct coff_link_hash_entry **)
- bfd_alloc (abfd,
- ((size_t) symcount
- * sizeof (struct coff_link_hash_entry *))));
+ amt = symcount * sizeof (struct coff_link_hash_entry *);
+ sym_hash = (struct coff_link_hash_entry **) bfd_zalloc (abfd, amt);
if (sym_hash == NULL && symcount != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ goto error_return;
obj_coff_sym_hashes (abfd) = sym_hash;
- memset (sym_hash, 0,
- (size_t) symcount * sizeof (struct coff_link_hash_entry *));
symesz = bfd_coff_symesz (abfd);
BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
while (esym < esym_end)
{
struct internal_syment sym;
+ enum coff_symbol_classification classification;
boolean copy;
bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
- if (sym.n_sclass == C_EXT
- || (sym_is_global && (*sym_is_global) (abfd, &sym)))
+ classification = bfd_coff_classify_symbol (abfd, &sym);
+ if (classification != COFF_SYMBOL_LOCAL)
{
const char *name;
char buf[SYMNMLEN + 1];
flagword flags;
asection *section;
bfd_vma value;
+ boolean addit;
/* This symbol is externally visible. */
name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
if (name == NULL)
- return false;
+ goto error_return;
/* We must copy the name into memory if we got it from the
syment itself, rather than the string table. */
value = sym.n_value;
- if (sym.n_scnum == 0)
+ switch (classification)
{
- if (value == 0)
- {
- flags = 0;
- section = bfd_und_section_ptr;
- }
- else
+ default:
+ abort ();
+
+ case COFF_SYMBOL_GLOBAL:
+ flags = BSF_EXPORT | BSF_GLOBAL;
+ section = coff_section_from_bfd_index (abfd, sym.n_scnum);
+ if (! obj_pe (abfd))
+ value -= section->vma;
+ break;
+
+ case COFF_SYMBOL_UNDEFINED:
+ flags = 0;
+ section = bfd_und_section_ptr;
+ break;
+
+ case COFF_SYMBOL_COMMON:
+ flags = BSF_GLOBAL;
+ section = bfd_com_section_ptr;
+ break;
+
+ case COFF_SYMBOL_PE_SECTION:
+ flags = BSF_SECTION_SYM | BSF_GLOBAL;
+ section = coff_section_from_bfd_index (abfd, sym.n_scnum);
+ break;
+ }
+
+ if (IS_WEAK_EXTERNAL (abfd, sym))
+ flags = BSF_WEAK;
+
+ addit = true;
+
+ /* In the PE format, section symbols actually refer to the
+ start of the output section. We handle them specially
+ here. */
+ if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
+ {
+ *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
+ name, false, copy, false);
+ if (*sym_hash != NULL)
{
- flags = BSF_GLOBAL;
- section = bfd_com_section_ptr;
+ if (((*sym_hash)->coff_link_hash_flags
+ & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0
+ && (*sym_hash)->root.type != bfd_link_hash_undefined
+ && (*sym_hash)->root.type != bfd_link_hash_undefweak)
+ (*_bfd_error_handler)
+ ("Warning: symbol `%s' is both section and non-section",
+ name);
+
+ addit = false;
}
}
- else
+
+ /* The Microsoft Visual C compiler does string pooling by
+ hashing the constants to an internal symbol name, and
+ relying on the linker comdat support to discard
+ duplicate names. However, if one string is a literal and
+ one is a data initializer, one will end up in the .data
+ section and one will end up in the .rdata section. The
+ Microsoft linker will combine them into the .data
+ section, which seems to be wrong since it might cause the
+ literal to change.
+
+ As long as there are no external references to the
+ symbols, which there shouldn't be, we can treat the .data
+ and .rdata instances as separate symbols. The comdat
+ code in the linker will do the appropriate merging. Here
+ we avoid getting a multiple definition error for one of
+ these special symbols.
+
+ FIXME: I don't think this will work in the case where
+ there are two object files which use the constants as a
+ literal and two object files which use it as a data
+ initializer. One or the other of the second object files
+ is going to wind up with an inappropriate reference. */
+ if (obj_pe (abfd)
+ && (classification == COFF_SYMBOL_GLOBAL
+ || classification == COFF_SYMBOL_PE_SECTION)
+ && section->comdat != NULL
+ && strncmp (name, "??_", 3) == 0
+ && strcmp (name, section->comdat->name) == 0)
{
- flags = BSF_EXPORT | BSF_GLOBAL;
- section = coff_section_from_bfd_index (abfd, sym.n_scnum);
- value -= section->vma;
+ if (*sym_hash == NULL)
+ *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
+ name, false, copy, false);
+ if (*sym_hash != NULL
+ && (*sym_hash)->root.type == bfd_link_hash_defined
+ && (*sym_hash)->root.u.def.section->comdat != NULL
+ && strcmp ((*sym_hash)->root.u.def.section->comdat->name,
+ section->comdat->name) == 0)
+ addit = false;
}
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, name, flags, section, value,
- (const char *) NULL, copy, false,
- (struct bfd_link_hash_entry **) sym_hash)))
- return false;
+ if (addit)
+ {
+ if (! (bfd_coff_link_add_one_symbol
+ (info, abfd, name, flags, section, value,
+ (const char *) NULL, copy, false,
+ (struct bfd_link_hash_entry **) sym_hash)))
+ goto error_return;
+ }
+
+ if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
+ (*sym_hash)->coff_link_hash_flags |=
+ COFF_LINK_HASH_PE_SECTION_SYMBOL;
+
+ /* Limit the alignment of a common symbol to the possible
+ alignment of a section. There is no point to permitting
+ a higher alignment for a common symbol: we can not
+ guarantee it, and it may cause us to allocate extra space
+ in the common section. */
+ if (section == bfd_com_section_ptr
+ && (*sym_hash)->root.type == bfd_link_hash_common
+ && ((*sym_hash)->root.u.c.p->alignment_power
+ > bfd_coff_default_section_alignment_power (abfd)))
+ (*sym_hash)->root.u.c.p->alignment_power
+ = bfd_coff_default_section_alignment_power (abfd);
if (info->hash->creator->flavour == bfd_get_flavour (abfd))
{
- if (((*sym_hash)->class == C_NULL
- && (*sym_hash)->type == T_NULL)
- || sym.n_scnum != 0
- || (sym.n_value != 0
- && (*sym_hash)->root.type != bfd_link_hash_defined))
- {
- (*sym_hash)->class = sym.n_sclass;
- (*sym_hash)->type = sym.n_type;
- (*sym_hash)->numaux = sym.n_numaux;
- (*sym_hash)->auxbfd = abfd;
+ /* If we don't have any symbol information currently in
+ the hash table, or if we are looking at a symbol
+ definition, then update the symbol class and type in
+ the hash table. */
+ if (((*sym_hash)->class == C_NULL
+ && (*sym_hash)->type == T_NULL)
+ || sym.n_scnum != 0
+ || (sym.n_value != 0
+ && (*sym_hash)->root.type != bfd_link_hash_defined
+ && (*sym_hash)->root.type != bfd_link_hash_defweak))
+ {
+ (*sym_hash)->class = sym.n_sclass;
+ if (sym.n_type != T_NULL)
+ {
+ /* We want to warn if the type changed, but not
+ if it changed from an unspecified type.
+ Testing the whole type byte may work, but the
+ change from (e.g.) a function of unspecified
+ type to function of known type also wants to
+ skip the warning. */
+ if ((*sym_hash)->type != T_NULL
+ && (*sym_hash)->type != sym.n_type
+ && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type)
+ && (BTYPE ((*sym_hash)->type) == T_NULL
+ || BTYPE (sym.n_type) == T_NULL)))
+ (*_bfd_error_handler)
+ (_("Warning: type of symbol `%s' changed from %d to %d in %s"),
+ name, (*sym_hash)->type, sym.n_type,
+ bfd_archive_filename (abfd));
+
+ /* We don't want to change from a meaningful
+ base type to a null one, but if we know
+ nothing, take what little we might now know. */
+ if (BTYPE (sym.n_type) != T_NULL
+ || (*sym_hash)->type == T_NULL)
+ (*sym_hash)->type = sym.n_type;
+ }
+ (*sym_hash)->auxbfd = abfd;
if (sym.n_numaux != 0)
{
union internal_auxent *alloc;
bfd_byte *eaux;
union internal_auxent *iaux;
+ (*sym_hash)->numaux = sym.n_numaux;
alloc = ((union internal_auxent *)
bfd_hash_allocate (&info->hash->table,
(sym.n_numaux
* sizeof (*alloc))));
if (alloc == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ goto error_return;
for (i = 0, eaux = esym + symesz, iaux = alloc;
i < sym.n_numaux;
i++, eaux += symesz, iaux++)
bfd_coff_swap_aux_in (abfd, (PTR) eaux, sym.n_type,
- sym.n_sclass, i, sym.n_numaux,
- (PTR) iaux);
+ sym.n_sclass, (int) i,
+ sym.n_numaux, (PTR) iaux);
(*sym_hash)->aux = alloc;
}
}
}
+
+ if (classification == COFF_SYMBOL_PE_SECTION
+ && (*sym_hash)->numaux != 0)
+ {
+ /* Some PE sections (such as .bss) have a zero size in
+ the section header, but a non-zero size in the AUX
+ record. Correct that here.
+
+ FIXME: This is not at all the right place to do this.
+ For example, it won't help objdump. This needs to be
+ done when we swap in the section header. */
+
+ BFD_ASSERT ((*sym_hash)->numaux == 1);
+ if (section->_raw_size == 0)
+ section->_raw_size = (*sym_hash)->aux[0].x_scn.x_scnlen;
+
+ /* FIXME: We could test whether the section sizes
+ matches the size in the aux entry, but apparently
+ that sometimes fails unexpectedly. */
+ }
}
esym += (sym.n_numaux + 1) * symesz;
sym_hash += sym.n_numaux + 1;
}
- return true;
-}
+ /* If this is a non-traditional, non-relocateable link, try to
+ optimize the handling of any .stab/.stabstr sections. */
+ if (! info->relocateable
+ && ! info->traditional_format
+ && info->hash->creator->flavour == bfd_get_flavour (abfd)
+ && (info->strip != strip_all && info->strip != strip_debugger))
+ {
+ asection *stab, *stabstr;
-/* parse out a -heap <reserved>,<commit> line */
+ stab = bfd_get_section_by_name (abfd, ".stab");
+ if (stab != NULL)
+ {
+ stabstr = bfd_get_section_by_name (abfd, ".stabstr");
-static char *
-dores_com (ptr, def,res, com)
- char *ptr;
- int *def;
- int *res;
- int *com;
-{
- *def = 1;
- *res = strtoul (ptr, &ptr, 0);
- if (ptr[0] == ',')
- *com = strtoul (ptr+1, &ptr, 0);
- return ptr;
-}
+ if (stabstr != NULL)
+ {
+ struct coff_link_hash_table *table;
+ struct coff_section_tdata *secdata;
-static char *get_name(ptr, dst)
-char *ptr;
-char **dst;
-{
- while (*ptr == ' ')
- ptr++;
- *dst = ptr;
- while (*ptr && *ptr != ' ')
- ptr++;
- *ptr = 0;
- return ptr+1;
-}
-/* Process any magic embedded commands in a section called .drectve */
-
-static int
-process_embedded_commands (abfd)
- bfd *abfd;
-{
- asection *sec = bfd_get_section_by_name (abfd, ".drectve");
- char *s;
- char *e;
- char *copy;
- if (!sec)
- return 1;
-
- copy = malloc ((size_t) sec->_raw_size);
- if (!copy)
- {
- bfd_set_error (bfd_error_no_memory);
- return 0;
- }
- if (! bfd_get_section_contents(abfd, sec, copy, 0, sec->_raw_size))
- {
- free (copy);
- return 0;
- }
- e = copy + sec->_raw_size;
- for (s = copy; s < e ; )
- {
- if (s[0]!= '-') {
- s++;
- continue;
- }
- if (strncmp (s,"-attr", 5) == 0)
- {
- char *name;
- char *attribs;
- asection *asec;
+ secdata = coff_section_data (abfd, stab);
+ if (secdata == NULL)
+ {
+ amt = sizeof (struct coff_section_tdata);
+ stab->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
+ if (stab->used_by_bfd == NULL)
+ goto error_return;
+ secdata = coff_section_data (abfd, stab);
+ }
- int loop = 1;
- int had_write = 0;
- int had_read = 0;
- int had_exec= 0;
- int had_shared= 0;
- s += 5;
- s = get_name(s, &name);
- s = get_name(s, &attribs);
- while (loop) {
- switch (*attribs++)
- {
- case 'W':
- had_write = 1;
- break;
- case 'R':
- had_read = 1;
- break;
- case 'S':
- had_shared = 1;
- break;
- case 'X':
- had_exec = 1;
- break;
- default:
- loop = 0;
- }
- }
- asec = bfd_get_section_by_name (abfd, name);
- if (asec) {
- if (had_exec)
- asec->flags |= SEC_CODE;
- if (!had_write)
- asec->flags |= SEC_READONLY;
- }
- }
- else if (strncmp (s,"-heap", 5) == 0)
- {
- s = dores_com (s+5,
- &NT_stack_heap.heap_defined,
- &NT_stack_heap.heap_reserve,
- &NT_stack_heap.heap_commit);
- }
- else if (strncmp (s,"-stack", 6) == 0)
- {
- s = dores_com (s+6,
- &NT_stack_heap.heap_defined,
- &NT_stack_heap.heap_reserve,
- &NT_stack_heap.heap_commit);
+ table = coff_hash_table (info);
+
+ if (! _bfd_link_section_stabs (abfd, &table->stab_info,
+ stab, stabstr,
+ &secdata->stab_info))
+ goto error_return;
+ }
}
- else
- s++;
}
- free (copy);
- return 1;
+
+ obj_coff_keep_syms (abfd) = keep_syms;
+
+ return true;
+
+ error_return:
+ obj_coff_keep_syms (abfd) = keep_syms;
+ return false;
}
+\f
/* Do the final link step. */
boolean
{
bfd_size_type symesz;
struct coff_final_link_info finfo;
+ boolean debug_merge_allocated;
+ boolean long_section_names;
asection *o;
struct bfd_link_order *p;
- size_t max_contents_size;
- size_t max_sym_count;
- size_t max_lineno_count;
- size_t max_reloc_count;
- size_t max_output_reloc_count;
+ bfd_size_type max_sym_count;
+ bfd_size_type max_lineno_count;
+ bfd_size_type max_reloc_count;
+ bfd_size_type max_output_reloc_count;
+ bfd_size_type max_contents_size;
file_ptr rel_filepos;
unsigned int relsz;
file_ptr line_filepos;
bfd *sub;
bfd_byte *external_relocs = NULL;
char strbuf[STRING_SIZE_SIZE];
+ bfd_size_type amt;
symesz = bfd_coff_symesz (abfd);
finfo.strtab = NULL;
finfo.section_info = NULL;
finfo.last_file_index = -1;
+ finfo.last_bf_index = -1;
finfo.internal_syms = NULL;
finfo.sec_ptrs = NULL;
finfo.sym_indices = NULL;
finfo.contents = NULL;
finfo.external_relocs = NULL;
finfo.internal_relocs = NULL;
+ finfo.global_to_static = false;
+ debug_merge_allocated = false;
- if (obj_pe(abfd))
- {
- /* store the subsystem, stack and heap parameters in variables defined
- in internal.h so that when they are needed to write the NT optional
- file header (coffcode.h), they will be available */
- NT_subsystem = info->subsystem;
- NT_stack_heap = info->stack_heap_parameters;
- }
+ coff_data (abfd)->link_info = info;
finfo.strtab = _bfd_stringtab_init ();
if (finfo.strtab == NULL)
goto error_return;
+ if (! coff_debug_merge_hash_table_init (&finfo.debug_merge))
+ goto error_return;
+ debug_merge_allocated = true;
+
/* Compute the file positions for all the sections. */
if (! abfd->output_has_begun)
- bfd_coff_compute_section_file_positions (abfd);
+ {
+ if (! bfd_coff_compute_section_file_positions (abfd))
+ goto error_return;
+ }
/* Count the line numbers and relocation entries required for the
output file. Set the file positions for the relocs. */
max_contents_size = 0;
max_lineno_count = 0;
max_reloc_count = 0;
+
+ long_section_names = false;
for (o = abfd->sections; o != NULL; o = o->next)
{
o->reloc_count = 0;
sec = p->u.indirect.section;
+ /* Mark all sections which are to be included in the
+ link. This will normally be every section. We need
+ to do this so that we can identify any sections which
+ the linker has decided to not include. */
+ sec->linker_mark = true;
+
if (info->strip == strip_none
|| info->strip == strip_some)
o->lineno_count += sec->lineno_count;
o->flags |= SEC_RELOC;
o->rel_filepos = rel_filepos;
rel_filepos += o->reloc_count * relsz;
+ /* In PE COFF, if there are at least 0xffff relocations an
+ extra relocation will be written out to encode the count. */
+ if (obj_pe (abfd) && o->reloc_count >= 0xffff)
+ rel_filepos += relsz;
+ }
+
+ if (bfd_coff_long_section_names (abfd)
+ && strlen (o->name) > SCNNMLEN)
+ {
+ /* This section has a long name which must go in the string
+ table. This must correspond to the code in
+ coff_write_object_contents which puts the string index
+ into the s_name field of the section header. That is why
+ we pass hash as false. */
+ if (_bfd_stringtab_add (finfo.strtab, o->name, false, false)
+ == (bfd_size_type) -1)
+ goto error_return;
+ long_section_names = true;
}
}
/* We use section_count + 1, rather than section_count, because
the target_index fields are 1 based. */
- finfo.section_info = ((struct coff_link_section_info *)
- malloc ((abfd->section_count + 1)
- * sizeof (struct coff_link_section_info)));
+ amt = abfd->section_count + 1;
+ amt *= sizeof (struct coff_link_section_info);
+ finfo.section_info = (struct coff_link_section_info *) bfd_malloc (amt);
if (finfo.section_info == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
for (i = 0; i <= abfd->section_count; i++)
{
finfo.section_info[i].relocs = NULL;
but only when doing a relocateable link, which is not the
common case. */
BFD_ASSERT (info->relocateable);
+ amt = o->reloc_count;
+ amt *= sizeof (struct internal_reloc);
finfo.section_info[o->target_index].relocs =
- ((struct internal_reloc *)
- malloc (o->reloc_count * sizeof (struct internal_reloc)));
+ (struct internal_reloc *) bfd_malloc (amt);
+ amt = o->reloc_count;
+ amt *= sizeof (struct coff_link_hash_entry *);
finfo.section_info[o->target_index].rel_hashes =
- ((struct coff_link_hash_entry **)
- malloc (o->reloc_count
- * sizeof (struct coff_link_hash_entry *)));
+ (struct coff_link_hash_entry **) bfd_malloc (amt);
if (finfo.section_info[o->target_index].relocs == NULL
|| finfo.section_info[o->target_index].rel_hashes == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (o->reloc_count > max_output_reloc_count)
max_output_reloc_count = o->reloc_count;
}
/* Allocate some buffers used while linking. */
- finfo.internal_syms = ((struct internal_syment *)
- malloc (max_sym_count
- * sizeof (struct internal_syment)));
- finfo.sec_ptrs = (asection **) malloc (max_sym_count * sizeof (asection *));
- finfo.sym_indices = (long *) malloc (max_sym_count * sizeof (long));
- finfo.outsyms = ((bfd_byte *)
- malloc ((size_t) ((max_sym_count + 1) * symesz)));
- finfo.linenos = (bfd_byte *) malloc (max_lineno_count
- * bfd_coff_linesz (abfd));
- finfo.contents = (bfd_byte *) malloc (max_contents_size);
- finfo.external_relocs = (bfd_byte *) malloc (max_reloc_count * relsz);
+ amt = max_sym_count * sizeof (struct internal_syment);
+ finfo.internal_syms = (struct internal_syment *) bfd_malloc (amt);
+ amt = max_sym_count * sizeof (asection *);
+ finfo.sec_ptrs = (asection **) bfd_malloc (amt);
+ amt = max_sym_count * sizeof (long);
+ finfo.sym_indices = (long *) bfd_malloc (amt);
+ finfo.outsyms = (bfd_byte *) bfd_malloc ((max_sym_count + 1) * symesz);
+ amt = max_lineno_count * bfd_coff_linesz (abfd);
+ finfo.linenos = (bfd_byte *) bfd_malloc (amt);
+ finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size);
+ amt = max_reloc_count * relsz;
+ finfo.external_relocs = (bfd_byte *) bfd_malloc (amt);
if (! info->relocateable)
- finfo.internal_relocs = ((struct internal_reloc *)
- malloc (max_reloc_count
- * sizeof (struct internal_reloc)));
+ {
+ amt = max_reloc_count * sizeof (struct internal_reloc);
+ finfo.internal_relocs = (struct internal_reloc *) bfd_malloc (amt);
+ }
if ((finfo.internal_syms == NULL && max_sym_count > 0)
|| (finfo.sec_ptrs == NULL && max_sym_count > 0)
|| (finfo.sym_indices == NULL && max_sym_count > 0)
|| (! info->relocateable
&& finfo.internal_relocs == NULL
&& max_reloc_count > 0))
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
/* We now know the position of everything in the file, except that
we don't know the size of the symbol table and therefore we don't
table in memory as we go along. We process all the relocations
for a single input file at once. */
obj_raw_syment_count (abfd) = 0;
+
+ if (coff_backend_info (abfd)->_bfd_coff_start_final_link)
+ {
+ if (! bfd_coff_start_final_link (abfd, info))
+ goto error_return;
+ }
+
for (o = abfd->sections; o != NULL; o = o->next)
{
for (p = o->link_order_head; p != NULL; p = p->next)
{
if (p->type == bfd_indirect_link_order
- && (bfd_get_flavour (p->u.indirect.section->owner)
- == bfd_target_coff_flavour))
+ && bfd_family_coff (p->u.indirect.section->owner))
{
sub = p->u.indirect.section->owner;
- if (! sub->output_has_begun)
+ if (! bfd_coff_link_output_has_begun (sub, & finfo))
{
- if (! coff_link_input_bfd (&finfo, sub))
+ if (! _bfd_coff_link_input_bfd (&finfo, sub))
goto error_return;
sub->output_has_begun = true;
}
else if (p->type == bfd_section_reloc_link_order
|| p->type == bfd_symbol_reloc_link_order)
{
- if (! coff_reloc_link_order (abfd, &finfo, o, p))
+ if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p))
goto error_return;
}
else
}
}
- /* Free up the buffers used by coff_link_input_bfd. */
+ if (! bfd_coff_final_link_postscript (abfd, & finfo))
+ goto error_return;
+
+ /* Free up the buffers used by _bfd_coff_link_input_bfd. */
+
+ coff_debug_merge_hash_table_free (&finfo.debug_merge);
+ debug_merge_allocated = false;
+
if (finfo.internal_syms != NULL)
{
free (finfo.internal_syms);
index of the first external symbol. Write it out again if
necessary. */
if (finfo.last_file_index != -1
- && finfo.last_file.n_value != obj_raw_syment_count (abfd))
+ && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd))
{
+ file_ptr pos;
+
finfo.last_file.n_value = obj_raw_syment_count (abfd);
bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file,
(PTR) finfo.outsyms);
- if (bfd_seek (abfd,
- (obj_sym_filepos (abfd)
- + finfo.last_file_index * symesz),
- SEEK_SET) != 0
- || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz)
+
+ pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
return false;
}
+ /* If doing task linking (ld --task-link) then make a pass through the
+ global symbols, writing out any that are defined, and making them
+ static. */
+ if (info->task_link)
+ {
+ finfo.failed = false;
+ coff_link_hash_traverse (coff_hash_table (info),
+ _bfd_coff_write_task_globals,
+ (PTR) &finfo);
+ if (finfo.failed)
+ goto error_return;
+ }
+
/* Write out the global symbols. */
finfo.failed = false;
- coff_link_hash_traverse (coff_hash_table (info), coff_write_global_sym,
+ coff_link_hash_traverse (coff_hash_table (info),
+ _bfd_coff_write_global_sym,
(PTR) &finfo);
if (finfo.failed)
goto error_return;
- /* The outsyms buffer is used by coff_write_global_sym. */
+ /* The outsyms buffer is used by _bfd_coff_write_global_sym. */
if (finfo.outsyms != NULL)
{
free (finfo.outsyms);
finfo.outsyms = NULL;
}
- if (info->relocateable)
+ if (info->relocateable && max_output_reloc_count > 0)
{
/* Now that we have written out all the global symbols, we know
the symbol indices to use for relocs against them, and we can
finally write out the relocs. */
- external_relocs = (bfd_byte *) malloc (max_output_reloc_count * relsz);
+ amt = max_output_reloc_count * relsz;
+ external_relocs = (bfd_byte *) bfd_malloc (amt);
if (external_relocs == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
for (o = abfd->sections; o != NULL; o = o->next)
{
}
if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0
- || bfd_write ((PTR) external_relocs, relsz, o->reloc_count,
- abfd) != relsz * o->reloc_count)
+ || (bfd_bwrite ((PTR) external_relocs,
+ (bfd_size_type) relsz * o->reloc_count, abfd)
+ != (bfd_size_type) relsz * o->reloc_count))
goto error_return;
}
finfo.section_info = NULL;
}
+ /* If we have optimized stabs strings, output them. */
+ if (coff_hash_table (info)->stab_info != NULL)
+ {
+ if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info))
+ return false;
+ }
+
/* Write out the string table. */
- if (bfd_seek (abfd,
- (obj_sym_filepos (abfd)
- + obj_raw_syment_count (abfd) * symesz),
- SEEK_SET) != 0)
- return false;
+ if (obj_raw_syment_count (abfd) != 0 || long_section_names)
+ {
+ file_ptr pos;
+
+ pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
+ if (bfd_seek (abfd, pos, SEEK_SET) != 0)
+ return false;
#if STRING_SIZE_SIZE == 4
- bfd_h_put_32 (abfd,
+ H_PUT_32 (abfd,
_bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
- (bfd_byte *) strbuf);
+ strbuf);
#else
- #error Change bfd_h_put_32
+ #error Change H_PUT_32 above
#endif
- if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE)
- return false;
+ if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd)
+ != STRING_SIZE_SIZE)
+ return false;
- if (! _bfd_stringtab_emit (abfd, finfo.strtab))
- return false;
+ if (! _bfd_stringtab_emit (abfd, finfo.strtab))
+ return false;
+
+ obj_coff_strings_written (abfd) = true;
+ }
_bfd_stringtab_free (finfo.strtab);
return true;
error_return:
+ if (debug_merge_allocated)
+ coff_debug_merge_hash_table_free (&finfo.debug_merge);
if (finfo.strtab != NULL)
_bfd_stringtab_free (finfo.strtab);
if (finfo.section_info != NULL)
for (i = 0; i < abfd->section_count; i++)
{
- if (finfo.section_info[i].relocs != NULL)
- free (finfo.section_info[i].relocs);
- if (finfo.section_info[i].rel_hashes != NULL)
- free (finfo.section_info[i].rel_hashes);
+ if (finfo.section_info[i].relocs != NULL)
+ free (finfo.section_info[i].relocs);
+ if (finfo.section_info[i].rel_hashes != NULL)
+ free (finfo.section_info[i].rel_hashes);
+ }
+ free (finfo.section_info);
+ }
+ if (finfo.internal_syms != NULL)
+ free (finfo.internal_syms);
+ if (finfo.sec_ptrs != NULL)
+ free (finfo.sec_ptrs);
+ if (finfo.sym_indices != NULL)
+ free (finfo.sym_indices);
+ if (finfo.outsyms != NULL)
+ free (finfo.outsyms);
+ if (finfo.linenos != NULL)
+ free (finfo.linenos);
+ if (finfo.contents != NULL)
+ free (finfo.contents);
+ if (finfo.external_relocs != NULL)
+ free (finfo.external_relocs);
+ if (finfo.internal_relocs != NULL)
+ free (finfo.internal_relocs);
+ if (external_relocs != NULL)
+ free (external_relocs);
+ return false;
+}
+
+/* parse out a -heap <reserved>,<commit> line */
+
+static char *
+dores_com (ptr, output_bfd, heap)
+ char *ptr;
+ bfd *output_bfd;
+ int heap;
+{
+ if (coff_data(output_bfd)->pe)
+ {
+ int val = strtoul (ptr, &ptr, 0);
+ if (heap)
+ pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val;
+ else
+ pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val;
+
+ if (ptr[0] == ',')
+ {
+ val = strtoul (ptr+1, &ptr, 0);
+ if (heap)
+ pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val;
+ else
+ pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val;
+ }
+ }
+ return ptr;
+}
+
+static char *get_name(ptr, dst)
+char *ptr;
+char **dst;
+{
+ while (*ptr == ' ')
+ ptr++;
+ *dst = ptr;
+ while (*ptr && *ptr != ' ')
+ ptr++;
+ *ptr = 0;
+ return ptr+1;
+}
+
+/* Process any magic embedded commands in a section called .drectve */
+
+static int
+process_embedded_commands (output_bfd, info, abfd)
+ bfd *output_bfd;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ bfd *abfd;
+{
+ asection *sec = bfd_get_section_by_name (abfd, ".drectve");
+ char *s;
+ char *e;
+ char *copy;
+ if (!sec)
+ return 1;
+
+ copy = bfd_malloc (sec->_raw_size);
+ if (!copy)
+ return 0;
+ if (! bfd_get_section_contents(abfd, sec, copy, (bfd_vma) 0, sec->_raw_size))
+ {
+ free (copy);
+ return 0;
+ }
+ e = copy + sec->_raw_size;
+ for (s = copy; s < e ; )
+ {
+ if (s[0]!= '-') {
+ s++;
+ continue;
+ }
+ if (strncmp (s,"-attr", 5) == 0)
+ {
+ char *name;
+ char *attribs;
+ asection *asec;
+
+ int loop = 1;
+ int had_write = 0;
+ int had_read = 0;
+ int had_exec= 0;
+ int had_shared= 0;
+ s += 5;
+ s = get_name(s, &name);
+ s = get_name(s, &attribs);
+ while (loop) {
+ switch (*attribs++)
+ {
+ case 'W':
+ had_write = 1;
+ break;
+ case 'R':
+ had_read = 1;
+ break;
+ case 'S':
+ had_shared = 1;
+ break;
+ case 'X':
+ had_exec = 1;
+ break;
+ default:
+ loop = 0;
+ }
+ }
+ asec = bfd_get_section_by_name (abfd, name);
+ if (asec) {
+ if (had_exec)
+ asec->flags |= SEC_CODE;
+ if (!had_write)
+ asec->flags |= SEC_READONLY;
+ }
+ }
+ else if (strncmp (s,"-heap", 5) == 0)
+ {
+ s = dores_com (s+5, output_bfd, 1);
}
- free (finfo.section_info);
+ else if (strncmp (s,"-stack", 6) == 0)
+ {
+ s = dores_com (s+6, output_bfd, 0);
+ }
+ else
+ s++;
}
- if (finfo.internal_syms != NULL)
- free (finfo.internal_syms);
- if (finfo.sec_ptrs != NULL)
- free (finfo.sec_ptrs);
- if (finfo.sym_indices != NULL)
- free (finfo.sym_indices);
- if (finfo.outsyms != NULL)
- free (finfo.outsyms);
- if (finfo.linenos != NULL)
- free (finfo.linenos);
- if (finfo.contents != NULL)
- free (finfo.contents);
- if (finfo.external_relocs != NULL)
- free (finfo.external_relocs);
- if (finfo.internal_relocs != NULL)
- free (finfo.internal_relocs);
- if (external_relocs != NULL)
- free (external_relocs);
- return false;
+ free (copy);
+ return 1;
}
-/* Read in and swap the relocs. This returns a buffer holding the
- relocs for section SEC in file ABFD. If CACHE is true and
- INTERNAL_RELOCS is NULL, the relocs read in wil be saved in case
- the function is called again. If EXTERNAL_RELOCS is not NULL, it
- is a buffer large enough to hold the unswapped relocs. If
- INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold
- the swapped relocs. If REQUIRE_INTERNAL is true, then the return
- value must be INTERNAL_RELOCS. The function returns NULL on error. */
-
-struct internal_reloc *
-_bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs,
- require_internal, internal_relocs)
- bfd *abfd;
- asection *sec;
- boolean cache;
- bfd_byte *external_relocs;
- boolean require_internal;
- struct internal_reloc *internal_relocs;
-{
- bfd_size_type relsz;
- bfd_byte *free_external = NULL;
- struct internal_reloc *free_internal = NULL;
- bfd_byte *erel;
- bfd_byte *erel_end;
- struct internal_reloc *irel;
+/* Place a marker against all symbols which are used by relocations.
+ This marker can be picked up by the 'do we skip this symbol ?'
+ loop in _bfd_coff_link_input_bfd() and used to prevent skipping
+ that symbol.
+ */
- if (coff_section_data (abfd, sec) != NULL
- && coff_section_data (abfd, sec)->relocs != NULL)
- {
- if (! require_internal)
- return coff_section_data (abfd, sec)->relocs;
- memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs,
- sec->reloc_count * sizeof (struct internal_reloc));
- return internal_relocs;
- }
+static void
+mark_relocs (finfo, input_bfd)
+ struct coff_final_link_info * finfo;
+ bfd * input_bfd;
+{
+ asection * a;
- relsz = bfd_coff_relsz (abfd);
+ if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0)
+ return;
- if (external_relocs == NULL)
+ for (a = input_bfd->sections; a != (asection *) NULL; a = a->next)
{
- free_external = (bfd_byte *) malloc (sec->reloc_count * relsz);
- if (free_external == NULL && sec->reloc_count > 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- external_relocs = free_external;
- }
+ struct internal_reloc * internal_relocs;
+ struct internal_reloc * irel;
+ struct internal_reloc * irelend;
- if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
- || (bfd_read (external_relocs, relsz, sec->reloc_count, abfd)
- != relsz * sec->reloc_count))
- goto error_return;
+ if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1)
+ continue;
+ /* Don't mark relocs in excluded sections. */
+ if (a->output_section == bfd_abs_section_ptr)
+ continue;
- if (internal_relocs == NULL)
- {
- free_internal = ((struct internal_reloc *)
- malloc (sec->reloc_count
- * sizeof (struct internal_reloc)));
- if (free_internal == NULL && sec->reloc_count > 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- internal_relocs = free_internal;
- }
+ /* Read in the relocs. */
+ internal_relocs = _bfd_coff_read_internal_relocs
+ (input_bfd, a, false,
+ finfo->external_relocs,
+ finfo->info->relocateable,
+ (finfo->info->relocateable
+ ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count)
+ : finfo->internal_relocs)
+ );
+
+ if (internal_relocs == NULL)
+ continue;
- /* Swap in the relocs. */
- erel = external_relocs;
- erel_end = erel + relsz * sec->reloc_count;
- irel = internal_relocs;
- for (; erel < erel_end; erel += relsz, irel++)
- bfd_coff_swap_reloc_in (abfd, (PTR) erel, (PTR) irel);
+ irel = internal_relocs;
+ irelend = irel + a->reloc_count;
- if (free_external != NULL)
- {
- free (free_external);
- free_external = NULL;
- }
+ /* Place a mark in the sym_indices array (whose entries have
+ been initialised to 0) for all of the symbols that are used
+ in the relocation table. This will then be picked up in the
+ skip/don't pass */
- if (cache && free_internal != NULL)
- {
- if (coff_section_data (abfd, sec) == NULL)
+ for (; irel < irelend; irel++)
{
- sec->used_by_bfd = ((PTR) bfd_zalloc (abfd,
- sizeof (struct coff_section_tdata)));
- if (sec->used_by_bfd == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- coff_section_data (abfd, sec)->contents = NULL;
+ finfo->sym_indices[ irel->r_symndx ] = -1;
}
- coff_section_data (abfd, sec)->relocs = free_internal;
}
-
- return internal_relocs;
-
- error_return:
- if (free_external != NULL)
- free (free_external);
- if (free_internal != NULL)
- free (free_internal);
- return NULL;
}
/* Link an input file into the linker output file. This function
handles all the sections and relocations of the input file at once. */
-static boolean
-coff_link_input_bfd (finfo, input_bfd)
+boolean
+_bfd_coff_link_input_bfd (finfo, input_bfd)
struct coff_final_link_info *finfo;
bfd *input_bfd;
{
- boolean (*sym_is_global) PARAMS ((bfd *, struct internal_syment *));
+ unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask;
+ unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft;
+#if 0
+ unsigned int n_btmask = coff_data (input_bfd)->local_n_btmask;
+#endif
boolean (*adjust_symndx) PARAMS ((bfd *, struct bfd_link_info *, bfd *,
asection *, struct internal_reloc *,
boolean *));
bfd *output_bfd;
const char *strings;
bfd_size_type syment_base;
- unsigned int n_tmask;
- unsigned int n_btshft;
boolean copy, hash;
bfd_size_type isymesz;
bfd_size_type osymesz;
struct internal_syment *isymp;
asection **secpp;
long *indexp;
- long output_index;
+ unsigned long output_index;
bfd_byte *outsym;
struct coff_link_hash_entry **sym_hash;
asection *o;
/* Move all the symbols to the output file. */
output_bfd = finfo->output_bfd;
- sym_is_global = coff_backend_info (input_bfd)->_bfd_coff_sym_is_global;
strings = NULL;
syment_base = obj_raw_syment_count (output_bfd);
isymesz = bfd_coff_symesz (input_bfd);
linesz = bfd_coff_linesz (input_bfd);
BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd));
- n_tmask = coff_data (input_bfd)->local_n_tmask;
- n_btshft = coff_data (input_bfd)->local_n_btshft;
-
- /* Define macros so that ISFCN, et. al., macros work correctly. */
-#define N_TMASK n_tmask
-#define N_BTSHFT n_btshft
-
copy = false;
if (! finfo->info->keep_memory)
copy = true;
output_index = syment_base;
outsym = finfo->outsyms;
- if (obj_pe (output_bfd))
- {
- if (!process_embedded_commands (input_bfd))
- return false;
- }
+ if (coff_data (output_bfd)->pe)
+ {
+ if (! process_embedded_commands (output_bfd, finfo->info, input_bfd))
+ return false;
+ }
+
+ /* If we are going to perform relocations and also strip/discard some symbols
+ then we must make sure that we do not strip/discard those symbols that are
+ going to be involved in the relocations */
+ if (( finfo->info->strip != strip_none
+ || finfo->info->discard != discard_none)
+ && finfo->info->relocateable)
+ {
+ /* mark the symbol array as 'not-used' */
+ memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp);
+
+ mark_relocs (finfo, input_bfd);
+ }
while (esym < esym_end)
{
struct internal_syment isym;
+ enum coff_symbol_classification classification;
boolean skip;
boolean global;
+ boolean dont_skip_symbol;
int add;
bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp);
the symbol. */
isym = *isymp;
- if (isym.n_scnum != 0)
- *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
- else
+ classification = bfd_coff_classify_symbol (input_bfd, &isym);
+ switch (classification)
{
- if (isym.n_value == 0)
- *secpp = bfd_und_section_ptr;
- else
- *secpp = bfd_com_section_ptr;
+ default:
+ abort ();
+ case COFF_SYMBOL_GLOBAL:
+ case COFF_SYMBOL_PE_SECTION:
+ case COFF_SYMBOL_LOCAL:
+ *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
+ break;
+ case COFF_SYMBOL_COMMON:
+ *secpp = bfd_com_section_ptr;
+ break;
+ case COFF_SYMBOL_UNDEFINED:
+ *secpp = bfd_und_section_ptr;
+ break;
}
+ /* Extract the flag indicating if this symbol is used by a
+ relocation. */
+ if ((finfo->info->strip != strip_none
+ || finfo->info->discard != discard_none)
+ && finfo->info->relocateable)
+ dont_skip_symbol = *indexp;
+ else
+ dont_skip_symbol = false;
+
*indexp = -1;
skip = false;
add = 1 + isym.n_numaux;
/* If we are stripping all symbols, we want to skip this one. */
- if (finfo->info->strip == strip_all)
+ if (finfo->info->strip == strip_all && ! dont_skip_symbol)
skip = true;
if (! skip)
{
- if (isym.n_sclass == C_EXT
- || (sym_is_global && (*sym_is_global) (input_bfd, &isym)))
+ switch (classification)
{
+ default:
+ abort ();
+ case COFF_SYMBOL_GLOBAL:
+ case COFF_SYMBOL_COMMON:
+ case COFF_SYMBOL_PE_SECTION:
/* This is a global symbol. Global symbols come at the
end of the symbol table, so skip them for now.
- Function symbols, however, are an exception, and are
- not moved to the end. */
+ Locally defined function symbols, however, are an
+ exception, and are not moved to the end. */
global = true;
if (! ISFCN (isym.n_type))
skip = true;
- }
- else
- {
+ break;
+
+ case COFF_SYMBOL_UNDEFINED:
+ /* Undefined symbols are left for the end. */
+ global = true;
+ skip = true;
+ break;
+
+ case COFF_SYMBOL_LOCAL:
/* This is a local symbol. Skip it if we are discarding
local symbols. */
- if (finfo->info->discard == discard_all)
+ if (finfo->info->discard == discard_all && ! dont_skip_symbol)
skip = true;
+ break;
}
}
+#ifndef COFF_WITH_PE
+ /* Skip section symbols for sections which are not going to be
+ emitted. */
+ if (!skip
+ && isym.n_sclass == C_STAT
+ && isym.n_type == T_NULL
+ && isym.n_numaux > 0)
+ {
+ if ((*secpp)->output_section == bfd_abs_section_ptr)
+ skip = true;
+ }
+#endif
+
/* If we stripping debugging symbols, and this is a debugging
- symbol, then skip it. */
+ symbol, then skip it. FIXME: gas sets the section to N_ABS
+ for some types of debugging symbols; I don't know if this is
+ a bug or not. In any case, we handle it here. */
if (! skip
&& finfo->info->strip == strip_debugger
- && isym.n_scnum == N_DEBUG)
+ && ! dont_skip_symbol
+ && (isym.n_scnum == N_DEBUG
+ || (isym.n_scnum == N_ABS
+ && (isym.n_sclass == C_AUTO
+ || isym.n_sclass == C_REG
+ || isym.n_sclass == C_MOS
+ || isym.n_sclass == C_MOE
+ || isym.n_sclass == C_MOU
+ || isym.n_sclass == C_ARG
+ || isym.n_sclass == C_REGPARM
+ || isym.n_sclass == C_FIELD
+ || isym.n_sclass == C_EOS))))
skip = true;
/* If some symbols are stripped based on the name, work out the
if (name == NULL)
return false;
- if ((finfo->info->strip == strip_some
- && (bfd_hash_lookup (finfo->info->keep_hash, name, false,
+ if (! dont_skip_symbol
+ && ((finfo->info->strip == strip_some
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, false,
false) == NULL))
- || (! global
- && finfo->info->discard == discard_l
- && strncmp (name, finfo->info->lprefix,
- finfo->info->lprefix_len) == 0))
+ || (! global
+ && finfo->info->discard == discard_l
+ && bfd_is_local_label_name (input_bfd, name))))
skip = true;
}
+ /* If this is an enum, struct, or union tag, see if we have
+ already output an identical type. */
+ if (! skip
+ && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0
+ && (isym.n_sclass == C_ENTAG
+ || isym.n_sclass == C_STRTAG
+ || isym.n_sclass == C_UNTAG)
+ && isym.n_numaux == 1)
+ {
+ const char *name;
+ char buf[SYMNMLEN + 1];
+ struct coff_debug_merge_hash_entry *mh;
+ struct coff_debug_merge_type *mt;
+ union internal_auxent aux;
+ struct coff_debug_merge_element **epp;
+ bfd_byte *esl, *eslend;
+ struct internal_syment *islp;
+ bfd_size_type amt;
+
+ name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
+ if (name == NULL)
+ return false;
+
+ /* Ignore fake names invented by compiler; treat them all as
+ the same name. */
+ if (*name == '~' || *name == '.' || *name == '$'
+ || (*name == bfd_get_symbol_leading_char (input_bfd)
+ && (name[1] == '~' || name[1] == '.' || name[1] == '$')))
+ name = "";
+
+ mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name,
+ true, true);
+ if (mh == NULL)
+ return false;
+
+ /* Allocate memory to hold type information. If this turns
+ out to be a duplicate, we pass this address to
+ bfd_release. */
+ amt = sizeof (struct coff_debug_merge_type);
+ mt = (struct coff_debug_merge_type *) bfd_alloc (input_bfd, amt);
+ if (mt == NULL)
+ return false;
+ mt->class = isym.n_sclass;
+
+ /* Pick up the aux entry, which points to the end of the tag
+ entries. */
+ bfd_coff_swap_aux_in (input_bfd, (PTR) (esym + isymesz),
+ isym.n_type, isym.n_sclass, 0, isym.n_numaux,
+ (PTR) &aux);
+
+ /* Gather the elements. */
+ epp = &mt->elements;
+ mt->elements = NULL;
+ islp = isymp + 2;
+ esl = esym + 2 * isymesz;
+ eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd)
+ + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz);
+ while (esl < eslend)
+ {
+ const char *elename;
+ char elebuf[SYMNMLEN + 1];
+ char *name_copy;
+
+ bfd_coff_swap_sym_in (input_bfd, (PTR) esl, (PTR) islp);
+
+ amt = sizeof (struct coff_debug_merge_element);
+ *epp = ((struct coff_debug_merge_element *)
+ bfd_alloc (input_bfd, amt));
+ if (*epp == NULL)
+ return false;
+
+ elename = _bfd_coff_internal_syment_name (input_bfd, islp,
+ elebuf);
+ if (elename == NULL)
+ return false;
+
+ amt = strlen (elename) + 1;
+ name_copy = (char *) bfd_alloc (input_bfd, amt);
+ if (name_copy == NULL)
+ return false;
+ strcpy (name_copy, elename);
+
+ (*epp)->name = name_copy;
+ (*epp)->type = islp->n_type;
+ (*epp)->tagndx = 0;
+ if (islp->n_numaux >= 1
+ && islp->n_type != T_NULL
+ && islp->n_sclass != C_EOS)
+ {
+ union internal_auxent eleaux;
+ long indx;
+
+ bfd_coff_swap_aux_in (input_bfd, (PTR) (esl + isymesz),
+ islp->n_type, islp->n_sclass, 0,
+ islp->n_numaux, (PTR) &eleaux);
+ indx = eleaux.x_sym.x_tagndx.l;
+
+ /* FIXME: If this tagndx entry refers to a symbol
+ defined later in this file, we just ignore it.
+ Handling this correctly would be tedious, and may
+ not be required. */
+
+ if (indx > 0
+ && (indx
+ < ((esym -
+ (bfd_byte *) obj_coff_external_syms (input_bfd))
+ / (long) isymesz)))
+ {
+ (*epp)->tagndx = finfo->sym_indices[indx];
+ if ((*epp)->tagndx < 0)
+ (*epp)->tagndx = 0;
+ }
+ }
+ epp = &(*epp)->next;
+ *epp = NULL;
+
+ esl += (islp->n_numaux + 1) * isymesz;
+ islp += islp->n_numaux + 1;
+ }
+
+ /* See if we already have a definition which matches this
+ type. We always output the type if it has no elements,
+ for simplicity. */
+ if (mt->elements == NULL)
+ bfd_release (input_bfd, (PTR) mt);
+ else
+ {
+ struct coff_debug_merge_type *mtl;
+
+ for (mtl = mh->types; mtl != NULL; mtl = mtl->next)
+ {
+ struct coff_debug_merge_element *me, *mel;
+
+ if (mtl->class != mt->class)
+ continue;
+
+ for (me = mt->elements, mel = mtl->elements;
+ me != NULL && mel != NULL;
+ me = me->next, mel = mel->next)
+ {
+ if (strcmp (me->name, mel->name) != 0
+ || me->type != mel->type
+ || me->tagndx != mel->tagndx)
+ break;
+ }
+
+ if (me == NULL && mel == NULL)
+ break;
+ }
+
+ if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base)
+ {
+ /* This is the first definition of this type. */
+ mt->indx = output_index;
+ mt->next = mh->types;
+ mh->types = mt;
+ }
+ else
+ {
+ /* This is a redefinition which can be merged. */
+ bfd_release (input_bfd, (PTR) mt);
+ *indexp = mtl->indx;
+ add = (eslend - esym) / isymesz;
+ skip = true;
+ }
+ }
+ }
+
/* We now know whether we are to skip this symbol or not. */
if (! skip)
{
isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
}
- if (isym.n_scnum > 0)
+ switch (isym.n_sclass)
{
- isym.n_scnum = (*secpp)->output_section->target_index;
- isym.n_value += ((*secpp)->output_section->vma
- + (*secpp)->output_offset
- - (*secpp)->vma);
- }
+ case C_AUTO:
+ case C_MOS:
+ case C_EOS:
+ case C_MOE:
+ case C_MOU:
+ case C_UNTAG:
+ case C_STRTAG:
+ case C_ENTAG:
+ case C_TPDEF:
+ case C_ARG:
+ case C_USTATIC:
+ case C_REG:
+ case C_REGPARM:
+ case C_FIELD:
+ /* The symbol value should not be modified. */
+ break;
+
+ case C_FCN:
+ if (obj_pe (input_bfd)
+ && strcmp (isym.n_name, ".bf") != 0
+ && isym.n_scnum > 0)
+ {
+ /* For PE, .lf and .ef get their value left alone,
+ while .bf gets relocated. However, they all have
+ "real" section numbers, and need to be moved into
+ the new section. */
+ isym.n_scnum = (*secpp)->output_section->target_index;
+ break;
+ }
+ /* Fall through. */
+ default:
+ case C_LABEL: /* Not completely sure about these 2 */
+ case C_EXTDEF:
+ case C_BLOCK:
+ case C_EFCN:
+ case C_NULL:
+ case C_EXT:
+ case C_STAT:
+ case C_SECTION:
+ case C_NT_WEAK:
+ /* Compute new symbol location. */
+ if (isym.n_scnum > 0)
+ {
+ isym.n_scnum = (*secpp)->output_section->target_index;
+ isym.n_value += (*secpp)->output_offset;
+ if (! obj_pe (input_bfd))
+ isym.n_value -= (*secpp)->vma;
+ if (! obj_pe (finfo->output_bfd))
+ isym.n_value += (*secpp)->output_section->vma;
+ }
+ break;
+
+ case C_FILE:
+ /* The value of a C_FILE symbol is the symbol index of
+ the next C_FILE symbol. The value of the last C_FILE
+ symbol is the symbol index to the first external
+ symbol (actually, coff_renumber_symbols does not get
+ this right--it just sets the value of the last C_FILE
+ symbol to zero--and nobody has ever complained about
+ it). We try to get this right, below, just before we
+ write the symbols out, but in the general case we may
+ have to write the symbol out twice. */
- /* The value of a C_FILE symbol is the symbol index of the
- next C_FILE symbol. The value of the last C_FILE symbol
- is the symbol index to the first external symbol
- (actually, coff_renumber_symbols does not get this
- right--it just sets the value of the last C_FILE symbol
- to zero--and nobody has ever complained about it). We
- try to get this right, below, just before we write the
- symbols out, but in the general case we may have to write
- the symbol out twice. */
- if (isym.n_sclass == C_FILE)
- {
if (finfo->last_file_index != -1
- && finfo->last_file.n_value != output_index)
+ && finfo->last_file.n_value != (bfd_vma) output_index)
{
- /* We must correct the value of the last C_FILE entry. */
+ /* We must correct the value of the last C_FILE
+ entry. */
finfo->last_file.n_value = output_index;
- if (finfo->last_file_index >= syment_base)
+ if ((bfd_size_type) finfo->last_file_index >= syment_base)
{
/* The last C_FILE symbol is in this input file. */
bfd_coff_swap_sym_out (output_bfd,
}
else
{
+ file_ptr pos;
+
/* We have already written out the last C_FILE
symbol. We need to write it out again. We
borrow *outsym temporarily. */
bfd_coff_swap_sym_out (output_bfd,
(PTR) &finfo->last_file,
(PTR) outsym);
- if (bfd_seek (output_bfd,
- (obj_sym_filepos (output_bfd)
- + finfo->last_file_index * osymesz),
- SEEK_SET) != 0
- || (bfd_write (outsym, osymesz, 1, output_bfd)
- != osymesz))
+ pos = obj_sym_filepos (output_bfd);
+ pos += finfo->last_file_index * osymesz;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz)
return false;
}
}
finfo->last_file_index = output_index;
finfo->last_file = isym;
+ break;
}
+ /* If doing task linking, convert normal global function symbols to
+ static functions. */
+ if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym))
+ isym.n_sclass = C_STAT;
+
/* Output the symbol. */
bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym);
indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd))
/ isymesz);
h = obj_coff_sym_hashes (input_bfd)[indx];
- BFD_ASSERT (h != NULL);
+ if (h == NULL)
+ {
+ /* This can happen if there were errors earlier in
+ the link. */
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
h->indx = output_index;
}
add = 1 + isymp->n_numaux;
- if (*indexp < 0
+ if ((*indexp < 0
+ || (bfd_size_type) *indexp < syment_base)
&& (*sym_hash == NULL
|| (*sym_hash)->auxbfd != input_bfd))
esym += add * isymesz;
if (*indexp < 0)
{
h = *sym_hash;
- BFD_ASSERT (h->numaux == isymp->n_numaux);
+
+ /* The m68k-motorola-sysv assembler will sometimes
+ generate two symbols with the same name, but only one
+ will have aux entries. */
+ BFD_ASSERT (isymp->n_numaux == 0
+ || h->numaux == isymp->n_numaux);
}
esym += isymesz;
}
else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL)
{
- long indx;
+ unsigned long indx;
if (ISFCN (isymp->n_type)
|| ISTAG (isymp->n_sclass)
- || isymp->n_sclass == C_BLOCK)
+ || isymp->n_sclass == C_BLOCK
+ || isymp->n_sclass == C_FCN)
{
indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l;
if (indx > 0
the index of the next symbol we are going
to include. I don't know if this is
entirely right. */
- while (finfo->sym_indices[indx] < 0
+ while ((finfo->sym_indices[indx] < 0
+ || ((bfd_size_type) finfo->sym_indices[indx]
+ < syment_base))
&& indx < obj_raw_syment_count (input_bfd))
++indx;
if (indx >= obj_raw_syment_count (input_bfd))
indx = auxp->x_sym.x_tagndx.l;
if (indx > 0 && indx < obj_raw_syment_count (input_bfd))
{
- indx = finfo->sym_indices[indx];
- if (indx < 0)
+ long symindx;
+
+ symindx = finfo->sym_indices[indx];
+ if (symindx < 0)
auxp->x_sym.x_tagndx.l = 0;
else
- auxp->x_sym.x_tagndx.l = indx;
+ auxp->x_sym.x_tagndx.l = symindx;
+ }
+
+ /* The .bf symbols are supposed to be linked through
+ the endndx field. We need to carry this list
+ across object files. */
+ if (i == 0
+ && h == NULL
+ && isymp->n_sclass == C_FCN
+ && (isymp->_n._n_n._n_zeroes != 0
+ || isymp->_n._n_n._n_offset == 0)
+ && isymp->_n._n_name[0] == '.'
+ && isymp->_n._n_name[1] == 'b'
+ && isymp->_n._n_name[2] == 'f'
+ && isymp->_n._n_name[3] == '\0')
+ {
+ if (finfo->last_bf_index != -1)
+ {
+ finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l =
+ *indexp;
+
+ if ((bfd_size_type) finfo->last_bf_index
+ >= syment_base)
+ {
+ PTR auxout;
+
+ /* The last .bf symbol is in this input
+ file. This will only happen if the
+ assembler did not set up the .bf
+ endndx symbols correctly. */
+ auxout = (PTR) (finfo->outsyms
+ + ((finfo->last_bf_index
+ - syment_base)
+ * osymesz));
+ bfd_coff_swap_aux_out (output_bfd,
+ (PTR) &finfo->last_bf,
+ isymp->n_type,
+ isymp->n_sclass,
+ 0, isymp->n_numaux,
+ auxout);
+ }
+ else
+ {
+ file_ptr pos;
+
+ /* We have already written out the last
+ .bf aux entry. We need to write it
+ out again. We borrow *outsym
+ temporarily. FIXME: This case should
+ be made faster. */
+ bfd_coff_swap_aux_out (output_bfd,
+ (PTR) &finfo->last_bf,
+ isymp->n_type,
+ isymp->n_sclass,
+ 0, isymp->n_numaux,
+ (PTR) outsym);
+ pos = obj_sym_filepos (output_bfd);
+ pos += finfo->last_bf_index * osymesz;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || (bfd_bwrite (outsym, osymesz, output_bfd)
+ != osymesz))
+ return false;
+ }
+ }
+
+ if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0)
+ finfo->last_bf_index = -1;
+ else
+ {
+ /* The endndx field of this aux entry must
+ be updated with the symbol number of the
+ next .bf symbol. */
+ finfo->last_bf = *auxp;
+ finfo->last_bf_index = (((outsym - finfo->outsyms)
+ / osymesz)
+ + syment_base);
+ }
}
}
bfd_vma offset;
bfd_byte *eline;
bfd_byte *elineend;
-
- if (o->lineno_count == 0)
+ bfd_byte *oeline;
+ boolean skipping;
+ file_ptr pos;
+ bfd_size_type amt;
+
+ /* FIXME: If SEC_HAS_CONTENTS is not for the section, then
+ build_link_order in ldwrite.c will not have created a
+ link order, which means that we will not have seen this
+ input section in _bfd_coff_final_link, which means that
+ we will not have allocated space for the line numbers of
+ this section. I don't think line numbers can be
+ meaningful for a section which does not have
+ SEC_HAS_CONTENTS set, but, if they do, this must be
+ changed. */
+ if (o->lineno_count == 0
+ || (o->output_section->flags & SEC_HAS_CONTENTS) == 0)
continue;
if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0
- || bfd_read (finfo->linenos, linesz, o->lineno_count,
+ || bfd_bread (finfo->linenos, linesz * o->lineno_count,
input_bfd) != linesz * o->lineno_count)
return false;
offset = o->output_section->vma + o->output_offset - o->vma;
eline = finfo->linenos;
+ oeline = finfo->linenos;
elineend = eline + linesz * o->lineno_count;
+ skipping = false;
for (; eline < elineend; eline += linesz)
{
struct internal_lineno iline;
if (iline.l_lnno != 0)
iline.l_addr.l_paddr += offset;
else if (iline.l_addr.l_symndx >= 0
- && (iline.l_addr.l_symndx
+ && ((unsigned long) iline.l_addr.l_symndx
< obj_raw_syment_count (input_bfd)))
{
long indx;
if (indx < 0)
{
/* These line numbers are attached to a symbol
- which we are stripping. We should really
- just discard the line numbers, but that would
- be a pain because we have already counted
- them. */
- indx = 0;
+ which we are stripping. We must discard the
+ line numbers because reading them back with
+ no associated symbol (or associating them all
+ with symbol #0) will fail. We can't regain
+ the space in the output file, but at least
+ they're dense. */
+ skipping = true;
}
else
{
is.n_type, is.n_sclass, 0,
is.n_numaux, auxptr);
}
+
+ skipping = false;
}
iline.l_addr.l_symndx = indx;
}
- bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline, (PTR) eline);
+ if (!skipping)
+ {
+ bfd_coff_swap_lineno_out (output_bfd, (PTR) &iline,
+ (PTR) oeline);
+ oeline += linesz;
+ }
}
- if (bfd_seek (output_bfd,
- (o->output_section->line_filepos
- + o->output_section->lineno_count * linesz),
- SEEK_SET) != 0
- || bfd_write (finfo->linenos, linesz, o->lineno_count,
- output_bfd) != linesz * o->lineno_count)
+ pos = o->output_section->line_filepos;
+ pos += o->output_section->lineno_count * linesz;
+ amt = oeline - finfo->linenos;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt)
return false;
- o->output_section->lineno_count += o->lineno_count;
+ o->output_section->lineno_count += amt / linesz;
}
}
normal case, this will save us from writing out the C_FILE symbol
again. */
if (finfo->last_file_index != -1
- && finfo->last_file_index >= syment_base)
+ && (bfd_size_type) finfo->last_file_index >= syment_base)
{
finfo->last_file.n_value = output_index;
bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file,
/* Write the modified symbols to the output file. */
if (outsym > finfo->outsyms)
{
- if (bfd_seek (output_bfd,
- obj_sym_filepos (output_bfd) + syment_base * osymesz,
- SEEK_SET) != 0
- || bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1,
- output_bfd) != outsym - finfo->outsyms)
+ file_ptr pos;
+ bfd_size_type amt;
+
+ pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
+ amt = outsym - finfo->outsyms;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
return false;
BFD_ASSERT ((obj_raw_syment_count (output_bfd)
for (o = input_bfd->sections; o != NULL; o = o->next)
{
bfd_byte *contents;
+ struct coff_section_tdata *secdata;
- if ((o->flags & SEC_HAS_CONTENTS) == 0)
- continue;
+ if (! o->linker_mark)
+ {
+ /* This section was omitted from the link. */
+ continue;
+ }
+
+ if ((o->flags & SEC_HAS_CONTENTS) == 0
+ || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0))
+ {
+ if ((o->flags & SEC_RELOC) != 0
+ && o->reloc_count != 0)
+ {
+ ((*_bfd_error_handler)
+ (_("%s: relocs in section `%s', but it has no contents"),
+ bfd_archive_filename (input_bfd),
+ bfd_get_section_name (input_bfd, o)));
+ bfd_set_error (bfd_error_no_contents);
+ return false;
+ }
- if (coff_section_data (input_bfd, o) != NULL
- && coff_section_data (input_bfd, o)->contents != NULL)
- contents = coff_section_data (input_bfd, o)->contents;
+ continue;
+ }
+
+ secdata = coff_section_data (input_bfd, o);
+ if (secdata != NULL && secdata->contents != NULL)
+ contents = secdata->contents;
else
{
if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
char buf[SYMNMLEN + 1];
/* This reloc is against a symbol we are
- stripping. It would be possible to
- handle this case, but I don't think it's
- worth it. */
+ stripping. This should have been handled
+ by the 'dont_skip_symbol' code in the while
+ loop at the top of this function. */
+
is = finfo->internal_syms + irel->r_symndx;
name = (_bfd_coff_internal_syment_name
}
/* Write out the modified section contents. */
- if (! bfd_set_section_contents (output_bfd, o->output_section,
- contents, o->output_offset,
- (o->_cooked_size != 0
- ? o->_cooked_size
- : o->_raw_size)))
- return false;
+ if (secdata == NULL || secdata->stab_info == NULL)
+ {
+ file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd);
+ bfd_size_type amt = (o->_cooked_size != 0
+ ? o->_cooked_size : o->_raw_size);
+ if (! bfd_set_section_contents (output_bfd, o->output_section,
+ contents, loc, amt))
+ return false;
+ }
+ else
+ {
+ if (! (_bfd_write_section_stabs
+ (output_bfd, &coff_hash_table (finfo->info)->stab_info,
+ o, &secdata->stab_info, contents)))
+ return false;
+ }
}
if (! finfo->info->keep_memory)
/* Write out a global symbol. Called via coff_link_hash_traverse. */
-static boolean
-coff_write_global_sym (h, data)
+boolean
+_bfd_coff_write_global_sym (h, data)
struct coff_link_hash_entry *h;
PTR data;
{
struct internal_syment isym;
bfd_size_type symesz;
unsigned int i;
+ file_ptr pos;
output_bfd = finfo->output_bfd;
+ if (h->root.type == bfd_link_hash_warning)
+ {
+ h = (struct coff_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_new)
+ return true;
+ }
+
if (h->indx >= 0)
return true;
{
default:
case bfd_link_hash_new:
+ case bfd_link_hash_warning:
abort ();
return false;
else
isym.n_scnum = sec->target_index;
isym.n_value = (h->root.u.def.value
- + sec->vma
+ h->root.u.def.section->output_offset);
+ if (! obj_pe (finfo->output_bfd))
+ isym.n_value += sec->vma;
}
break;
break;
case bfd_link_hash_indirect:
- case bfd_link_hash_warning:
/* Just ignore these. They can't be handled anyhow. */
return true;
}
if (isym.n_sclass == C_NULL)
isym.n_sclass = C_EXT;
+ /* If doing task linking and this is the pass where we convert
+ defined globals to statics, then do that conversion now. If the
+ symbol is not being converted, just ignore it and it will be
+ output during a later pass. */
+ if (finfo->global_to_static)
+ {
+ if (! IS_EXTERNAL (output_bfd, isym))
+ return true;
+
+ isym.n_sclass = C_STAT;
+ }
+
+ /* When a weak symbol is not overriden by a strong one,
+ turn it into an external symbol when not building a
+ shared or relocateable object. */
+ if (! finfo->info->shared
+ && ! finfo->info->relocateable
+ && IS_WEAK_EXTERNAL (finfo->output_bfd, isym))
+ isym.n_sclass = C_EXT;
+
isym.n_numaux = h->numaux;
-
+
bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) finfo->outsyms);
symesz = bfd_coff_symesz (output_bfd);
- if (bfd_seek (output_bfd,
- (obj_sym_filepos (output_bfd)
- + obj_raw_syment_count (output_bfd) * symesz),
- SEEK_SET) != 0
- || bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz)
+ pos = obj_sym_filepos (output_bfd);
+ pos += obj_raw_syment_count (output_bfd) * symesz;
+ if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
{
finfo->failed = true;
return false;
++obj_raw_syment_count (output_bfd);
- /* Write out any associated aux entries. There normally will be
- none. If there are any, I have no idea how to modify them. */
+ /* Write out any associated aux entries. Most of the aux entries
+ will have been modified in _bfd_coff_link_input_bfd. We have to
+ handle section aux entries here, now that we have the final
+ relocation and line number counts. */
for (i = 0; i < isym.n_numaux; i++)
{
- bfd_coff_swap_aux_out (output_bfd, (PTR) (h->aux + i), isym.n_type,
- isym.n_sclass, i, isym.n_numaux,
+ union internal_auxent *auxp;
+
+ auxp = h->aux + i;
+
+ /* Look for a section aux entry here using the same tests that
+ coff_swap_aux_out uses. */
+ if (i == 0
+ && (isym.n_sclass == C_STAT
+ || isym.n_sclass == C_HIDDEN)
+ && isym.n_type == T_NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ asection *sec;
+
+ sec = h->root.u.def.section->output_section;
+ if (sec != NULL)
+ {
+ auxp->x_scn.x_scnlen = (sec->_cooked_size != 0
+ ? sec->_cooked_size
+ : sec->_raw_size);
+
+ /* For PE, an overflow on the final link reportedly does
+ not matter. FIXME: Why not? */
+
+ if (sec->reloc_count > 0xffff
+ && (! obj_pe (output_bfd)
+ || finfo->info->relocateable))
+ (*_bfd_error_handler)
+ (_("%s: %s: reloc overflow: 0x%lx > 0xffff"),
+ bfd_get_filename (output_bfd),
+ bfd_get_section_name (output_bfd, sec),
+ sec->reloc_count);
+
+ if (sec->lineno_count > 0xffff
+ && (! obj_pe (output_bfd)
+ || finfo->info->relocateable))
+ (*_bfd_error_handler)
+ (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"),
+ bfd_get_filename (output_bfd),
+ bfd_get_section_name (output_bfd, sec),
+ sec->lineno_count);
+
+ auxp->x_scn.x_nreloc = sec->reloc_count;
+ auxp->x_scn.x_nlinno = sec->lineno_count;
+ auxp->x_scn.x_checksum = 0;
+ auxp->x_scn.x_associated = 0;
+ auxp->x_scn.x_comdat = 0;
+ }
+ }
+
+ bfd_coff_swap_aux_out (output_bfd, (PTR) auxp, isym.n_type,
+ isym.n_sclass, (int) i, isym.n_numaux,
(PTR) finfo->outsyms);
- if (bfd_write (finfo->outsyms, symesz, 1, output_bfd) != symesz)
+ if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
{
finfo->failed = true;
return false;
return true;
}
+/* Write out task global symbols, converting them to statics. Called
+ via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do
+ the dirty work, if the symbol we are processing needs conversion. */
+
+boolean
+_bfd_coff_write_task_globals (h, data)
+ struct coff_link_hash_entry *h;
+ PTR data;
+{
+ struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
+ boolean rtnval = true;
+ boolean save_global_to_static;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct coff_link_hash_entry *) h->root.u.i.link;
+
+ if (h->indx < 0)
+ {
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ save_global_to_static = finfo->global_to_static;
+ finfo->global_to_static = true;
+ rtnval = _bfd_coff_write_global_sym (h, data);
+ finfo->global_to_static = save_global_to_static;
+ break;
+ default:
+ break;
+ }
+ }
+ return (rtnval);
+}
+
/* Handle a link order which is supposed to generate a reloc. */
-static boolean
-coff_reloc_link_order (output_bfd, finfo, output_section, link_order)
+boolean
+_bfd_coff_reloc_link_order (output_bfd, finfo, output_section, link_order)
bfd *output_bfd;
struct coff_final_link_info *finfo;
asection *output_section;
bfd_byte *buf;
bfd_reloc_status_type rstat;
boolean ok;
+ file_ptr loc;
size = bfd_get_reloc_size (howto);
buf = (bfd_byte *) bfd_zmalloc (size);
if (buf == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
rstat = _bfd_relocate_contents (howto, output_bfd,
- link_order->u.reloc.p->addend, buf);
+ (bfd_vma) link_order->u.reloc.p->addend,\
+ buf);
switch (rstat)
{
case bfd_reloc_ok:
}
break;
}
+ loc = link_order->offset * bfd_octets_per_byte (output_bfd);
ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf,
- (file_ptr) link_order->offset, size);
+ loc, size);
free (buf);
if (! ok)
return false;
{
struct coff_link_hash_entry *h;
- h = coff_link_hash_lookup (coff_hash_table (finfo->info),
- link_order->u.reloc.p->u.name,
- false, false, true);
+ h = ((struct coff_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
+ link_order->u.reloc.p->u.name,
+ false, false, true));
if (h != NULL)
{
if (h->indx >= 0)
struct internal_reloc *rel;
struct internal_reloc *relend;
-
rel = relocs;
relend = rel + input_section->reloc_count;
for (; rel < relend; rel++)
h = NULL;
sym = NULL;
}
+ else if (symndx < 0
+ || (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
+ {
+ (*_bfd_error_handler)
+ ("%s: illegal symbol index %ld in relocs",
+ bfd_archive_filename (input_bfd), symndx);
+ return false;
+ }
else
- {
+ {
h = obj_coff_sym_hashes (input_bfd)[symndx];
sym = syms + symndx;
}
else
addend = 0;
-
howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
sym, &addend);
if (howto == NULL)
return false;
- /* WINDOWS_NT; in this next section, the value of 'val' will be computed.
- With respect to the .idata and .rsrc sections, the NT_IMAGE_BASE
- must be removed from the value that is to be relocated (NT_IMAGE_BASE
- is currently defined in internal.h and has value 400000). Now this
- value should only be removed from addresses being relocated in the
- .idata and .rsrc sections, not the .text section which should have
- the 'real' address. In addition, the .rsrc val's must also be
- adjusted by the input_section->vma. */
+ /* If we are doing a relocateable link, then we can just ignore
+ a PC relative reloc that is pcrel_offset. It will already
+ have the correct value. If this is not a relocateable link,
+ then we should ignore the symbol value. */
+ if (howto->pc_relative && howto->pcrel_offset)
+ {
+ if (info->relocateable)
+ continue;
+ if (sym != NULL && sym->n_scnum != 0)
+ addend += sym->n_value;
+ }
val = 0;
sec = sections[symndx];
val = (sec->output_section->vma
+ sec->output_offset
- + sym->n_value
- - sec->vma);
+ + sym->n_value);
+ if (! obj_pe (input_bfd))
+ val -= sec->vma;
}
}
else
+ sec->output_offset);
}
+ else if (h->root.type == bfd_link_hash_undefweak)
+ val = 0;
+
else if (! info->relocateable)
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd, input_section,
- rel->r_vaddr - input_section->vma)))
+ rel->r_vaddr - input_section->vma, true)))
return false;
}
}
if (info->base_file)
{
- /* So if this is non pcrelative, and is referenced
- to a section or a common symbol, then it needs a reloc */
- if (!howto->pc_relative
- && (sym->n_scnum
- || sym->n_value))
+ /* Emit a reloc if the backend thinks it needs it. */
+ if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto))
{
- /* relocation to a symbol in a section which
- isn't absolute - we output the address here
- to a file */
- bfd_vma addr = rel->r_vaddr
- + input_section->output_offset
- + input_section->output_section->vma;
- fwrite (&addr, 1,4, (FILE *) info->base_file);
+ /* Relocation to a symbol in a section which isn't
+ absolute. We output the address here to a file.
+ This file is then read by dlltool when generating the
+ reloc section. Note that the base file is not
+ portable between systems. We write out a long here,
+ and dlltool reads in a long. */
+ long addr = (rel->r_vaddr
+ - input_section->vma
+ + input_section->output_offset
+ + input_section->output_section->vma);
+ if (coff_data (output_bfd)->pe)
+ addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
+ if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file)
+ != sizeof (long))
+ {
+ bfd_set_error (bfd_error_system_call);
+ return false;
+ }
}
}
-
+
rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents,
rel->r_vaddr - input_section->vma,
abort ();
case bfd_reloc_ok:
break;
+ case bfd_reloc_outofrange:
+ (*_bfd_error_handler)
+ (_("%s: bad reloc address 0x%lx in section `%s'"),
+ bfd_archive_filename (input_bfd),
+ (unsigned long) rel->r_vaddr,
+ bfd_get_section_name (input_bfd, input_section));
+ return false;
case bfd_reloc_overflow:
{
const char *name;
}
}
}
-
return true;
}
projects / deliverable / binutils-gdb.git / blobdiff