/* Routines to help build PEI-format DLLs (Win32 etc)
- Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
This file is part of GLD, the Gnu Linker.
#include "sysdep.h"
#include "bfdlink.h"
#include "libiberty.h"
+#include "safe-ctype.h"
#include <time.h>
-#include <ctype.h>
#include "ld.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldwrite.h"
#include "ldmisc.h"
-#include "ldgram.h"
+#include <ldgram.h>
#include "ldmain.h"
#include "ldfile.h"
#include "ldemul.h"
#include "deffile.h"
#include "pe-dll.h"
-/************************************************************************
-
- This file turns a regular Windows PE image into a DLL. Because of
- the complexity of this operation, it has been broken down into a
- number of separate modules which are all called by the main function
- at the end of this file. This function is not re-entrant and is
- normally only called once, so static variables are used to reduce
- the number of parameters and return values required.
-
- See also: ld/emultempl/pe.em
-
- ************************************************************************/
-
-/* for emultempl/pe.em */
-
-def_file *pe_def_file = 0;
+/* This file turns a regular Windows PE image into a DLL. Because of
+ the complexity of this operation, it has been broken down into a
+ number of separate modules which are all called by the main function
+ at the end of this file. This function is not re-entrant and is
+ normally only called once, so static variables are used to reduce
+ the number of parameters and return values required.
+
+ See also: ld/emultempl/pe.em. */
+
+/* Auto-import feature by Paul Sokolovsky
+
+ Quick facts:
+
+ 1. With this feature on, DLL clients can import variables from DLL
+ without any concern from their side (for example, without any source
+ code modifications).
+
+ 2. This is done completely in bounds of the PE specification (to be fair,
+ there's a place where it pokes nose out of, but in practice it works).
+ So, resulting module can be used with any other PE compiler/linker.
+
+ 3. Auto-import is fully compatible with standard import method and they
+ can be mixed together.
+
+ 4. Overheads: space: 8 bytes per imported symbol, plus 20 for each
+ reference to it; load time: negligible; virtual/physical memory: should be
+ less than effect of DLL relocation, and I sincerely hope it doesn't affect
+ DLL sharability (too much).
+
+ Idea
+
+ The obvious and only way to get rid of dllimport insanity is to make client
+ access variable directly in the DLL, bypassing extra dereference. I.e.,
+ whenever client contains something like
+
+ mov dll_var,%eax,
+
+ address of dll_var in the command should be relocated to point into loaded
+ DLL. The aim is to make OS loader do so, and than make ld help with that.
+ Import section of PE made following way: there's a vector of structures
+ each describing imports from particular DLL. Each such structure points
+ to two other parallel vectors: one holding imported names, and one which
+ will hold address of corresponding imported name. So, the solution is
+ de-vectorize these structures, making import locations be sparse and
+ pointing directly into code. Before continuing, it is worth a note that,
+ while authors strives to make PE act ELF-like, there're some other people
+ make ELF act PE-like: elfvector, ;-) .
+
+ Implementation
+
+ For each reference of data symbol to be imported from DLL (to set of which
+ belong symbols with name <sym>, if __imp_<sym> is found in implib), the
+ import fixup entry is generated. That entry is of type
+ IMAGE_IMPORT_DESCRIPTOR and stored in .idata$3 subsection. Each
+ fixup entry contains pointer to symbol's address within .text section
+ (marked with __fuN_<sym> symbol, where N is integer), pointer to DLL name
+ (so, DLL name is referenced by multiple entries), and pointer to symbol
+ name thunk. Symbol name thunk is singleton vector (__nm_th_<symbol>)
+ pointing to IMAGE_IMPORT_BY_NAME structure (__nm_<symbol>) directly
+ containing imported name. Here comes that "om the edge" problem mentioned
+ above: PE specification rambles that name vector (OriginalFirstThunk)
+ should run in parallel with addresses vector (FirstThunk), i.e. that they
+ should have same number of elements and terminated with zero. We violate
+ this, since FirstThunk points directly into machine code. But in practice,
+ OS loader implemented the sane way: it goes thru OriginalFirstThunk and
+ puts addresses to FirstThunk, not something else. It once again should be
+ noted that dll and symbol name structures are reused across fixup entries
+ and should be there anyway to support standard import stuff, so sustained
+ overhead is 20 bytes per reference. Other question is whether having several
+ IMAGE_IMPORT_DESCRIPTORS for the same DLL is possible. Answer is yes, it is
+ done even by native compiler/linker (libth32's functions are in fact reside
+ in windows9x kernel32.dll, so if you use it, you have two
+ IMAGE_IMPORT_DESCRIPTORS for kernel32.dll). Yet other question is whether
+ referencing the same PE structures several times is valid. The answer is why
+ not, prohibiting that (detecting violation) would require more work on
+ behalf of loader than not doing it.
+
+ See also: ld/emultempl/pe.em. */
+
+static void add_bfd_to_link (bfd *, const char *, struct bfd_link_info *);
+
+/* For emultempl/pe.em. */
+
+def_file * pe_def_file = 0;
int pe_dll_export_everything = 0;
int pe_dll_do_default_excludes = 1;
int pe_dll_kill_ats = 0;
int pe_dll_stdcall_aliases = 0;
int pe_dll_warn_dup_exports = 0;
int pe_dll_compat_implib = 0;
+int pe_dll_extra_pe_debug = 0;
-/************************************************************************
-
- static variables and types
-
- ************************************************************************/
+/* Static variables and types. */
static bfd_vma image_base;
-
static bfd *filler_bfd;
-static struct sec *edata_s, *reloc_s;
+static struct bfd_section *edata_s, *reloc_s;
static unsigned char *edata_d, *reloc_d;
static size_t edata_sz, reloc_sz;
+static int runtime_pseudo_relocs_created = 0;
-typedef struct {
- char *target_name;
- char *object_target;
- unsigned int imagebase_reloc;
- int pe_arch;
- int bfd_arch;
- int underscored;
-} pe_details_type;
+typedef struct
+ {
+ char *target_name;
+ char *object_target;
+ unsigned int imagebase_reloc;
+ int pe_arch;
+ int bfd_arch;
+ int underscored;
+ }
+pe_details_type;
+
+typedef struct
+ {
+ char *name;
+ int len;
+ }
+autofilter_entry_type;
#define PE_ARCH_i386 1
#define PE_ARCH_sh 2
#define PE_ARCH_mips 3
#define PE_ARCH_arm 4
+#define PE_ARCH_arm_epoc 5
-static pe_details_type pe_detail_list[] = {
+static pe_details_type pe_detail_list[] =
+{
{
"pei-i386",
"pe-i386",
11 /* ARM_RVA32 */,
PE_ARCH_arm,
bfd_arch_arm,
+ 1
+ },
+ {
+ "epoc-pei-arm-little",
+ "epoc-pe-arm-little",
+ 11 /* ARM_RVA32 */,
+ PE_ARCH_arm_epoc,
+ bfd_arch_arm,
0
},
{ NULL, NULL, 0, 0, 0, 0 }
static pe_details_type *pe_details;
+static autofilter_entry_type autofilter_symbollist[] =
+{
+ { "DllMain@12", 10 },
+ { "DllEntryPoint@0", 15 },
+ { "DllMainCRTStartup@12", 20 },
+ { "_cygwin_dll_entry@12", 20 },
+ { "_cygwin_crt0_common@8", 21 },
+ { "_cygwin_noncygwin_dll_entry@12", 30 },
+ { "impure_ptr", 10 },
+ { "_pei386_runtime_relocator", 25 },
+ { "do_pseudo_reloc", 15 },
+ { "cygwin_crt0", 11 },
+ { NULL, 0 }
+};
+
+/* Do not specify library suffix explicitly, to allow for dllized versions. */
+static autofilter_entry_type autofilter_liblist[] =
+{
+ { "libcygwin", 9 },
+ { "libgcc", 6 },
+ { "libstdc++", 9 },
+ { "libmingw32", 10 },
+ { "libmingwex", 10 },
+ { "libg2c", 6 },
+ { "libsupc++", 9 },
+ { "libobjc", 7 },
+ { "libgcj", 6 },
+ { NULL, 0 }
+};
+
+static autofilter_entry_type autofilter_objlist[] =
+{
+ { "crt0.o", 6 },
+ { "crt1.o", 6 },
+ { "crt2.o", 6 },
+ { "dllcrt1.o", 9 },
+ { "dllcrt2.o", 9 },
+ { "gcrt0.o", 7 },
+ { "gcrt1.o", 7 },
+ { "gcrt2.o", 7 },
+ { "crtbegin.o", 10 },
+ { "crtend.o", 8 },
+ { NULL, 0 }
+};
+
+static autofilter_entry_type autofilter_symbolprefixlist[] =
+{
+ /* { "__imp_", 6 }, */
+ /* Do __imp_ explicitly to save time. */
+ { "__rtti_", 7 },
+ /* Don't re-export auto-imported symbols. */
+ { "_nm_", 4 },
+ { "__builtin_", 10 },
+ /* Don't export symbols specifying internal DLL layout. */
+ { "_head_", 6 },
+ { "_fmode", 6 },
+ { "_impure_ptr", 11 },
+ { "cygwin_attach_dll", 17 },
+ { "cygwin_premain0", 15 },
+ { "cygwin_premain1", 15 },
+ { "cygwin_premain2", 15 },
+ { "cygwin_premain3", 15 },
+ { "environ", 7 },
+ { NULL, 0 }
+};
+
+static autofilter_entry_type autofilter_symbolsuffixlist[] =
+{
+ { "_iname", 6 },
+ { NULL, 0 }
+};
+
#define U(str) (pe_details->underscored ? "_" str : str)
void
-pe_dll_id_target (target)
- const char *target;
+pe_dll_id_target (const char *target)
{
int i;
+
for (i = 0; pe_detail_list[i].target_name; i++)
if (strcmp (pe_detail_list[i].target_name, target) == 0
|| strcmp (pe_detail_list[i].object_target, target) == 0)
exit (1);
}
-/************************************************************************
-
- Helper functions for qsort. Relocs must be sorted so that we can write
- them out by pages.
+/* Helper functions for qsort. Relocs must be sorted so that we can write
+ them out by pages. */
- ************************************************************************/
-
-typedef struct {
- bfd_vma vma;
- char type;
- short extra;
-} reloc_data_type;
+typedef struct
+ {
+ bfd_vma vma;
+ char type;
+ short extra;
+ }
+reloc_data_type;
static int
-reloc_sort (va, vb)
- const void *va, *vb;
+reloc_sort (const void *va, const void *vb)
{
- bfd_vma a = ((reloc_data_type *) va)->vma;
- bfd_vma b = ((reloc_data_type *) vb)->vma;
+ bfd_vma a = ((const reloc_data_type *) va)->vma;
+ bfd_vma b = ((const reloc_data_type *) vb)->vma;
+
return (a > b) ? 1 : ((a < b) ? -1 : 0);
}
static int
-pe_export_sort (va, vb)
- const void *va, *vb;
+pe_export_sort (const void *va, const void *vb)
{
- def_file_export *a = (def_file_export *) va;
- def_file_export *b = (def_file_export *) vb;
+ const def_file_export *a = va;
+ const def_file_export *b = vb;
+
return strcmp (a->name, b->name);
}
-/************************************************************************
-
- Read and process the .DEF file
-
- ************************************************************************/
+/* Read and process the .DEF file. */
/* These correspond to the entries in pe_def_file->exports[]. I use
exported_symbol_sections[i] to tag whether or not the symbol was
defined, since we can't export symbols we don't have. */
static bfd_vma *exported_symbol_offsets;
-static struct sec **exported_symbol_sections;
-
+static struct bfd_section **exported_symbol_sections;
static int export_table_size;
static int count_exported;
static int count_exported_byname;
static int min_ordinal, max_ordinal;
static int *exported_symbols;
-typedef struct exclude_list_struct {
- char *string;
- struct exclude_list_struct *next;
-} exclude_list_struct;
+typedef struct exclude_list_struct
+ {
+ char *string;
+ struct exclude_list_struct *next;
+ int type;
+ }
+exclude_list_struct;
static struct exclude_list_struct *excludes = 0;
void
-pe_dll_add_excludes (new_excludes)
- const char *new_excludes;
+pe_dll_add_excludes (const char *new_excludes, const int type)
{
char *local_copy;
char *exclude_string;
{
struct exclude_list_struct *new_exclude;
- new_exclude = ((struct exclude_list_struct *)
- xmalloc (sizeof (struct exclude_list_struct)));
- new_exclude->string = (char *) xmalloc (strlen (exclude_string) + 1);
+ new_exclude = xmalloc (sizeof (struct exclude_list_struct));
+ new_exclude->string = xmalloc (strlen (exclude_string) + 1);
strcpy (new_exclude->string, exclude_string);
+ new_exclude->type = type;
new_exclude->next = excludes;
excludes = new_exclude;
}
free (local_copy);
}
+
+/* abfd is a bfd containing n (or NULL)
+ It can be used for contextual checks. */
+
static int
-auto_export (d, n)
- def_file *d;
- const char *n;
+auto_export (bfd *abfd, def_file *d, const char *n)
{
int i;
struct exclude_list_struct *ex;
+ autofilter_entry_type *afptr;
+ const char * libname = 0;
+ if (abfd && abfd->my_archive)
+ libname = lbasename (abfd->my_archive->filename);
+
+ /* We should not re-export imported stuff. */
+ if (strncmp (n, "_imp_", 5) == 0)
+ return 0;
+
for (i = 0; i < d->num_exports; i++)
if (strcmp (d->exports[i].name, n) == 0)
return 0;
+
if (pe_dll_do_default_excludes)
{
- if (strcmp (n, "DllMain@12") == 0)
- return 0;
- if (strcmp (n, "DllEntryPoint@0") == 0)
- return 0;
- if (strcmp (n, "impure_ptr") == 0)
- return 0;
+ const char * p;
+ int len;
+
+ if (pe_dll_extra_pe_debug)
+ printf ("considering exporting: %s, abfd=%p, abfd->my_arc=%p\n",
+ n, abfd, abfd->my_archive);
+
+ /* First of all, make context checks:
+ Don't export anything from standard libs. */
+ if (libname)
+ {
+ afptr = autofilter_liblist;
+
+ while (afptr->name)
+ {
+ if (strncmp (libname, afptr->name, afptr->len) == 0 )
+ return 0;
+ afptr++;
+ }
+ }
+
+ /* Next, exclude symbols from certain startup objects. */
+
+ if (abfd && (p = lbasename (abfd->filename)))
+ {
+ afptr = autofilter_objlist;
+ while (afptr->name)
+ {
+ if (strcmp (p, afptr->name) == 0)
+ return 0;
+ afptr++;
+ }
+ }
+
+ /* Don't try to blindly exclude all symbols
+ that begin with '__'; this was tried and
+ it is too restrictive. */
+
+ /* Then, exclude specific symbols. */
+ afptr = autofilter_symbollist;
+ while (afptr->name)
+ {
+ if (strcmp (n, afptr->name) == 0)
+ return 0;
+
+ afptr++;
+ }
+
+ /* Next, exclude symbols starting with ... */
+ afptr = autofilter_symbolprefixlist;
+ while (afptr->name)
+ {
+ if (strncmp (n, afptr->name, afptr->len) == 0)
+ return 0;
+
+ afptr++;
+ }
+
+ /* Finally, exclude symbols ending with ... */
+ len = strlen (n);
+ afptr = autofilter_symbolsuffixlist;
+ while (afptr->name)
+ {
+ if ((len >= afptr->len)
+ /* Add 1 to insure match with trailing '\0'. */
+ && strncmp (n + len - afptr->len, afptr->name,
+ afptr->len + 1) == 0)
+ return 0;
+
+ afptr++;
+ }
}
+
for (ex = excludes; ex; ex = ex->next)
- if (strcmp (n, ex->string) == 0)
- return 0;
+ {
+ if (ex->type == 1) /* exclude-libs */
+ {
+ if (libname
+ && ((strcmp (libname, ex->string) == 0)
+ || (strcasecmp ("ALL", ex->string) == 0)))
+ return 0;
+ }
+ else if (strcmp (n, ex->string) == 0)
+ return 0;
+ }
+
return 1;
}
static void
-process_def_file (abfd, info)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+process_def_file (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
{
int i, j;
struct bfd_link_hash_entry *blhe;
bfd *b;
- struct sec *s;
+ struct bfd_section *s;
def_file_export *e = 0;
if (!pe_def_file)
/* First, run around to all the objects looking for the .drectve
sections, and push those into the def file too. */
-
for (b = info->input_bfds; b; b = b->link_next)
{
s = bfd_get_section_by_name (b, ".drectve");
if (s)
{
- int size = bfd_get_section_size_before_reloc (s);
+ long size = s->size;
char *buf = xmalloc (size);
+
bfd_get_section_contents (b, s, buf, 0, size);
def_file_add_directive (pe_def_file, buf, size);
free (buf);
}
}
- /* Now, maybe export everything else the default way. */
+ /* If we are not building a DLL, when there are no exports
+ we do not build an export table at all. */
+ if (!pe_dll_export_everything && pe_def_file->num_exports == 0
+ && info->executable)
+ return;
+ /* Now, maybe export everything else the default way. */
if (pe_dll_export_everything || pe_def_file->num_exports == 0)
{
for (b = info->input_bfds; b; b = b->link_next)
int nsyms, symsize;
symsize = bfd_get_symtab_upper_bound (b);
- symbols = (asymbol **) xmalloc (symsize);
+ symbols = xmalloc (symsize);
nsyms = bfd_canonicalize_symtab (b, symbols);
for (j = 0; j < nsyms; j++)
{
/* We should export symbols which are either global or not
- anything at all. (.bss data is the latter) */
- if ((symbols[j]->flags & BSF_GLOBAL)
- || (symbols[j]->flags == BSF_NO_FLAGS))
+ anything at all. (.bss data is the latter)
+ We should not export undefined symbols. */
+ if (symbols[j]->section != &bfd_und_section
+ && ((symbols[j]->flags & BSF_GLOBAL)
+ || (symbols[j]->flags == BFD_FORT_COMM_DEFAULT_VALUE)))
{
const char *sn = symbols[j]->name;
+
+ /* We should not re-export imported stuff. */
+ {
+ char *name = xmalloc (strlen (sn) + 2 + 6);
+ sprintf (name, "%s%s", U("_imp_"), sn);
+
+ blhe = bfd_link_hash_lookup (info->hash, name,
+ FALSE, FALSE, FALSE);
+ free (name);
+
+ if (blhe && blhe->type == bfd_link_hash_defined)
+ continue;
+ }
+
if (*sn == '_')
sn++;
- if (auto_export (pe_def_file, sn))
- {
- def_file_export *p;
- p=def_file_add_export (pe_def_file, sn, 0, -1);
- /* Fill data flag properly, from dlltool.c */
- p->flag_data = !(symbols[j]->flags & BSF_FUNCTION);
- }
+
+ if (auto_export (b, pe_def_file, sn))
+ {
+ def_file_export *p;
+ p=def_file_add_export (pe_def_file, sn, 0, -1);
+ /* Fill data flag properly, from dlltool.c. */
+ p->flag_data = !(symbols[j]->flags & BSF_FUNCTION);
+ }
}
}
}
#define NE pe_def_file->num_exports
/* Canonicalize the export list. */
-
if (pe_dll_kill_ats)
{
for (i = 0; i < NE; i++)
if (strchr (pe_def_file->exports[i].name, '@'))
{
/* This will preserve internal_name, which may have been
- pointing to the same memory as name, or might not
- have. */
- char *tmp = xstrdup (pe_def_file->exports[i].name);
+ pointing to the same memory as name, or might not
+ have. */
+ int lead_at = (*pe_def_file->exports[i].name == '@');
+ char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
+
*(strchr (tmp, '@')) = 0;
pe_def_file->exports[i].name = tmp;
}
{
if (strchr (pe_def_file->exports[i].name, '@'))
{
- char *tmp = xstrdup (pe_def_file->exports[i].name);
+ int lead_at = (*pe_def_file->exports[i].name == '@');
+ char *tmp = xstrdup (pe_def_file->exports[i].name + lead_at);
+
*(strchr (tmp, '@')) = 0;
- if (auto_export (pe_def_file, tmp))
+ if (auto_export (NULL, pe_def_file, tmp))
def_file_add_export (pe_def_file, tmp,
- pe_def_file->exports[i].internal_name, -1);
+ pe_def_file->exports[i].internal_name,
+ -1);
else
free (tmp);
}
/* Convenience, but watch out for it changing. */
e = pe_def_file->exports;
- exported_symbol_offsets = (bfd_vma *) xmalloc (NE * sizeof (bfd_vma));
- exported_symbol_sections = (struct sec **) xmalloc (NE * sizeof (struct sec *));
+ exported_symbol_offsets = xmalloc (NE * sizeof (bfd_vma));
+ exported_symbol_sections = xmalloc (NE * sizeof (struct bfd_section *));
- memset (exported_symbol_sections, 0, NE * sizeof (struct sec *));
+ memset (exported_symbol_sections, 0, NE * sizeof (struct bfd_section *));
max_ordinal = 0;
min_ordinal = 65536;
count_exported = 0;
count_exported_byname = 0;
count_with_ordinals = 0;
- qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]), pe_export_sort);
+ qsort (pe_def_file->exports, NE, sizeof (pe_def_file->exports[0]),
+ pe_export_sort);
for (i = 0, j = 0; i < NE; i++)
{
if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
einfo (_("Warning, duplicate EXPORT: %s\n"),
e[j - 1].name);
}
+
if (e[i].ordinal != -1)
e[j - 1].ordinal = e[i].ordinal;
e[j - 1].flag_private |= e[i].flag_private;
for (i = 0; i < NE; i++)
{
- char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
- if (pe_details->underscored)
+ char *name;
+
+ name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
+ if (pe_details->underscored
+ && (*pe_def_file->exports[i].internal_name != '@'))
{
*name = '_';
strcpy (name + 1, pe_def_file->exports[i].internal_name);
blhe = bfd_link_hash_lookup (info->hash,
name,
- false, false, true);
+ FALSE, FALSE, TRUE);
if (blhe
&& (blhe->type == bfd_link_hash_defined
}
}
-/************************************************************************
-
- Build the bfd that will contain .edata and .reloc sections
-
- ************************************************************************/
+/* Build the bfd that will contain .edata and .reloc sections. */
static void
-build_filler_bfd (include_edata)
- int include_edata;
+build_filler_bfd (int include_edata)
{
lang_input_statement_type *filler_file;
filler_file = lang_add_input_file ("dll stuff",
einfo ("%X%P: can not create .reloc section: %E\n");
return;
}
+
bfd_set_section_size (filler_bfd, reloc_s, 0);
ldlang_add_file (filler_file);
}
-/************************************************************************
-
- Gather all the exported symbols and build the .edata section
-
- ************************************************************************/
+/* Gather all the exported symbols and build the .edata section. */
static void
-generate_edata (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
+generate_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
int i, next_ordinal;
int name_table_size = 0;
/* First, we need to know how many exported symbols there are,
and what the range of ordinals is. */
-
if (pe_def_file->name)
- {
- dll_name = pe_def_file->name;
- }
+ dll_name = pe_def_file->name;
else
{
dll_name = abfd->filename;
+
for (dlnp = dll_name; *dlnp; dlnp++)
- {
- if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':')
- dll_name = dlnp + 1;
- }
+ if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':')
+ dll_name = dlnp + 1;
}
if (count_with_ordinals && max_ordinal > count_exported)
min_ordinal = 1;
max_ordinal = count_exported;
}
- export_table_size = max_ordinal - min_ordinal + 1;
- exported_symbols = (int *) xmalloc (export_table_size * sizeof (int));
+ export_table_size = max_ordinal - min_ordinal + 1;
+ exported_symbols = xmalloc (export_table_size * sizeof (int));
for (i = 0; i < export_table_size; i++)
exported_symbols[i] = -1;
{
int ei = pe_def_file->exports[i].ordinal - min_ordinal;
int pi = exported_symbols[ei];
+
if (pi != -1)
{
/* xgettext:c-format */
{
while (exported_symbols[next_ordinal - min_ordinal] != -1)
next_ordinal++;
+
exported_symbols[next_ordinal - min_ordinal] = i;
pe_def_file->exports[i].ordinal = next_ordinal;
}
/* OK, now we can allocate some memory. */
-
- edata_sz = (40 /* directory */
- + 4 * export_table_size /* addresses */
+ edata_sz = (40 /* directory */
+ + 4 * export_table_size /* addresses */
+ 4 * count_exported_byname /* name ptrs */
+ 2 * count_exported_byname /* ordinals */
+ name_table_size + strlen (dll_name) + 1);
been done in process_def_file(). */
static void
-fill_exported_offsets (abfd, info)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+fill_exported_offsets (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
{
int i;
struct bfd_link_hash_entry *blhe;
for (i = 0; i < pe_def_file->num_exports; i++)
{
- char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
- if (pe_details->underscored)
+ char *name;
+
+ name = xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
+ if (pe_details->underscored
+ && *pe_def_file->exports[i].internal_name != '@')
{
*name = '_';
strcpy (name + 1, pe_def_file->exports[i].internal_name);
blhe = bfd_link_hash_lookup (info->hash,
name,
- false, false, true);
+ FALSE, FALSE, TRUE);
+
+ if (blhe && blhe->type == bfd_link_hash_defined)
+ exported_symbol_offsets[i] = blhe->u.def.value;
- if (blhe && (blhe->type == bfd_link_hash_defined))
- {
- exported_symbol_offsets[i] = blhe->u.def.value;
- }
free (name);
}
}
static void
-fill_edata (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
+fill_edata (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
- int i, hint;
+ int s, hint;
unsigned char *edirectory;
- unsigned long *eaddresses;
- unsigned long *enameptrs;
- unsigned short *eordinals;
- unsigned char *enamestr;
+ unsigned char *eaddresses;
+ unsigned char *enameptrs;
+ unsigned char *eordinals;
+ char *enamestr;
time_t now;
time (&now);
- edata_d = (unsigned char *) xmalloc (edata_sz);
+ edata_d = xmalloc (edata_sz);
/* Note use of array pointer math here. */
edirectory = edata_d;
- eaddresses = (unsigned long *) (edata_d + 40);
- enameptrs = eaddresses + export_table_size;
- eordinals = (unsigned short *) (enameptrs + count_exported_byname);
- enamestr = (char *) (eordinals + count_exported_byname);
+ eaddresses = edata_d + 40;
+ enameptrs = eaddresses + 4 * export_table_size;
+ eordinals = enameptrs + 4 * count_exported_byname;
+ enamestr = (char *) eordinals + 2 * count_exported_byname;
-#define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) + edata_s->output_section->vma - image_base)
+#define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) \
+ + edata_s->output_section->vma - image_base)
memset (edata_d, 0, edata_sz);
bfd_put_32 (abfd, now, edata_d + 4);
bfd_put_16 (abfd, pe_def_file->version_major, edata_d + 8);
bfd_put_16 (abfd, pe_def_file->version_minor, edata_d + 10);
}
+
bfd_put_32 (abfd, ERVA (enamestr), edata_d + 12);
strcpy (enamestr, dll_name);
enamestr += strlen (enamestr) + 1;
fill_exported_offsets (abfd, info);
- /* Ok, now for the filling in part. */
+ /* Ok, now for the filling in part.
+ Scan alphabetically - ie the ordering in the exports[] table,
+ rather than by ordinal - the ordering in the exported_symbol[]
+ table. See dlltool.c and:
+ http://sources.redhat.com/ml/binutils/2003-04/msg00379.html
+ for more information. */
hint = 0;
- for (i = 0; i < export_table_size; i++)
+ for (s = 0; s < NE; s++)
{
- int s = exported_symbols[i];
- if (s != -1)
+ struct bfd_section *ssec = exported_symbol_sections[s];
+ if (ssec && pe_def_file->exports[s].ordinal != -1)
{
- struct sec *ssec = exported_symbol_sections[s];
unsigned long srva = (exported_symbol_offsets[s]
+ ssec->output_section->vma
+ ssec->output_offset);
int ord = pe_def_file->exports[s].ordinal;
bfd_put_32 (abfd, srva - image_base,
- (void *) (eaddresses + ord - min_ordinal));
+ eaddresses + 4 * (ord - min_ordinal));
+
if (!pe_def_file->exports[s].flag_noname)
{
char *ename = pe_def_file->exports[s].name;
- bfd_put_32 (abfd, ERVA (enamestr), (void *) enameptrs);
- enameptrs++;
+
+ bfd_put_32 (abfd, ERVA (enamestr), enameptrs);
+ enameptrs += 4;
strcpy (enamestr, ename);
enamestr += strlen (enamestr) + 1;
- bfd_put_16 (abfd, ord - min_ordinal, (void *) eordinals);
- eordinals++;
+ bfd_put_16 (abfd, ord - min_ordinal, eordinals);
+ eordinals += 2;
pe_def_file->exports[s].hint = hint++;
}
}
}
}
-/************************************************************************
- Gather all the relocations and build the .reloc section
+static struct bfd_section *current_sec;
+
+void
+pe_walk_relocs_of_symbol (struct bfd_link_info *info,
+ const char *name,
+ int (*cb) (arelent *, asection *))
+{
+ bfd *b;
+ asection *s;
+
+ for (b = info->input_bfds; b; b = b->link_next)
+ {
+ asymbol **symbols;
+ int nsyms, symsize;
+
+ symsize = bfd_get_symtab_upper_bound (b);
+ symbols = xmalloc (symsize);
+ nsyms = bfd_canonicalize_symtab (b, symbols);
+
+ for (s = b->sections; s; s = s->next)
+ {
+ arelent **relocs;
+ int relsize, nrelocs, i;
+ int flags = bfd_get_section_flags (b, s);
+
+ /* Skip discarded linkonce sections. */
+ if (flags & SEC_LINK_ONCE
+ && s->output_section == bfd_abs_section_ptr)
+ continue;
+
+ current_sec = s;
+
+ relsize = bfd_get_reloc_upper_bound (b, s);
+ relocs = xmalloc (relsize);
+ nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
+
+ for (i = 0; i < nrelocs; i++)
+ {
+ struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
+
+ if (!strcmp (name, sym->name))
+ cb (relocs[i], s);
+ }
+
+ free (relocs);
+
+ /* Warning: the allocated symbols are remembered in BFD and reused
+ later, so don't free them! */
+ /* free (symbols); */
+ }
+ }
+}
- ************************************************************************/
+/* Gather all the relocations and build the .reloc section. */
static void
-generate_reloc (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+generate_reloc (bfd *abfd, struct bfd_link_info *info)
{
/* For .reloc stuff. */
reloc_data_type *reloc_data;
int total_relocs = 0;
int i;
- unsigned long sec_page = (unsigned long) (-1);
+ unsigned long sec_page = (unsigned long) -1;
unsigned long page_ptr, page_count;
int bi;
bfd *b;
- struct sec *s;
+ struct bfd_section *s;
total_relocs = 0;
for (b = info->input_bfds; b; b = b->link_next)
for (s = b->sections; s; s = s->next)
total_relocs += s->reloc_count;
- reloc_data = (reloc_data_type *) xmalloc (total_relocs * sizeof (reloc_data_type));
+ reloc_data = xmalloc (total_relocs * sizeof (reloc_data_type));
total_relocs = 0;
bi = 0;
}
symsize = bfd_get_symtab_upper_bound (b);
- symbols = (asymbol **) xmalloc (symsize);
+ symbols = xmalloc (symsize);
nsyms = bfd_canonicalize_symtab (b, symbols);
relsize = bfd_get_reloc_upper_bound (b, s);
- relocs = (arelent **) xmalloc ((size_t) relsize);
+ relocs = xmalloc (relsize);
nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
for (i = 0; i < nrelocs; i++)
{
+ if (pe_dll_extra_pe_debug)
+ {
+ struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
+ printf ("rel: %s\n", sym->name);
+ }
if (!relocs[i]->howto->pc_relative
&& relocs[i]->howto->type != pe_details->imagebase_reloc)
{
bfd_vma sym_vma;
- struct symbol_cache_entry *sym = *relocs[i]->sym_ptr_ptr;
+ struct bfd_symbol *sym = *relocs[i]->sym_ptr_ptr;
+
sym_vma = (relocs[i]->addend
+ sym->value
+ sym->section->vma
reloc_data[total_relocs].type = 5;
total_relocs++;
break;
+ case BITS_AND_SHIFT (24, 2):
+ /* FIXME: 0 is ARM_26D, it is defined in bfd/coff-arm.c
+ Those ARM_xxx definitions should go in proper
+ header someday. */
+ if (relocs[i]->howto->type == 0
+ /* Older GNU linkers used 5 instead of 0 for this reloc. */
+ || relocs[i]->howto->type == 5)
+ /* This is an ARM_26D reloc, which is an ARM_26 reloc
+ that has already been fully processed during a
+ previous link stage, so ignore it here. */
+ break;
+ /* Fall through. */
default:
/* xgettext:c-format */
einfo (_("%XError: %d-bit reloc in dll\n"),
free (relocs);
/* Warning: the allocated symbols are remembered in BFD and
reused later, so don't free them! */
-#if 0
- free (symbol);
-#endif
}
}
/* At this point, we have total_relocs relocation addresses in
reloc_addresses, which are all suitable for the .reloc section.
We must now create the new sections. */
-
qsort (reloc_data, total_relocs, sizeof (*reloc_data), reloc_sort);
for (i = 0; i < total_relocs; i++)
if (this_page != sec_page)
{
- reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align */
+ reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */
reloc_sz += 8;
sec_page = this_page;
}
if (reloc_data[i].type == 4)
reloc_sz += 2;
}
- reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align */
-
- reloc_d = (unsigned char *) xmalloc (reloc_sz);
- sec_page = (unsigned long) (-1);
+ reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align. */
+ reloc_d = xmalloc (reloc_sz);
+ sec_page = (unsigned long) -1;
reloc_sz = 0;
- page_ptr = (unsigned long) (-1);
+ page_ptr = (unsigned long) -1;
page_count = 0;
+
for (i = 0; i < total_relocs; i++)
{
unsigned long rva = reloc_data[i].vma - image_base;
unsigned long this_page = (rva & ~0xfff);
+
if (this_page != sec_page)
{
while (reloc_sz & 3)
reloc_d[reloc_sz++] = 0;
- if (page_ptr != (unsigned long) (-1))
+
+ if (page_ptr != (unsigned long) -1)
bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
+
bfd_put_32 (abfd, this_page, reloc_d + reloc_sz);
page_ptr = reloc_sz;
reloc_sz += 8;
sec_page = this_page;
page_count = 0;
}
+
bfd_put_16 (abfd, (rva & 0xfff) + (reloc_data[i].type << 12),
reloc_d + reloc_sz);
reloc_sz += 2;
+
if (reloc_data[i].type == 4)
{
bfd_put_16 (abfd, reloc_data[i].extra, reloc_d + reloc_sz);
reloc_sz += 2;
}
+
page_count++;
}
+
while (reloc_sz & 3)
reloc_d[reloc_sz++] = 0;
- if (page_ptr != (unsigned long) (-1))
+
+ if (page_ptr != (unsigned long) -1)
bfd_put_32 (abfd, reloc_sz - page_ptr, reloc_d + page_ptr + 4);
- while (reloc_sz < reloc_s->_raw_size)
+
+ while (reloc_sz < reloc_s->size)
reloc_d[reloc_sz++] = 0;
}
-/************************************************************************
-
- Given the exiting def_file structure, print out a .DEF file that
- corresponds to it.
-
- ************************************************************************/
+/* Given the exiting def_file structure, print out a .DEF file that
+ corresponds to it. */
static void
-quoteput (s, f, needs_quotes)
- char *s;
- FILE *f;
- int needs_quotes;
+quoteput (char *s, FILE *f, int needs_quotes)
{
char *cp;
+
for (cp = s; *cp; cp++)
if (*cp == '\''
|| *cp == '"'
|| *cp == '\\'
- || isspace ((unsigned char) *cp)
+ || ISSPACE (*cp)
|| *cp == ','
|| *cp == ';')
needs_quotes = 1;
+
if (needs_quotes)
{
putc ('"', f);
+
while (*s)
{
if (*s == '"' || *s == '\\')
putc ('\\', f);
+
putc (*s, f);
s++;
}
+
putc ('"', f);
}
else
}
void
-pe_dll_generate_def_file (pe_out_def_filename)
- const char *pe_out_def_filename;
+pe_dll_generate_def_file (const char *pe_out_def_filename)
{
int i;
FILE *out = fopen (pe_out_def_filename, "w");
+
if (out == NULL)
- {
- /* xgettext:c-format */
- einfo (_("%s: Can't open output def file %s\n"),
- program_name, pe_out_def_filename);
- }
+ /* xgettext:c-format */
+ einfo (_("%s: Can't open output def file %s\n"),
+ program_name, pe_out_def_filename);
if (pe_def_file)
{
fprintf (out, "LIBRARY ");
else
fprintf (out, "NAME ");
+
quoteput (pe_def_file->name, out, 1);
+
if (pe_data (output_bfd)->pe_opthdr.ImageBase)
fprintf (out, " BASE=0x%lx",
(unsigned long) pe_data (output_bfd)->pe_opthdr.ImageBase);
pe_def_file->stack_reserve, pe_def_file->stack_commit);
else if (pe_def_file->stack_reserve != -1)
fprintf (out, "STACKSIZE 0x%x\n", pe_def_file->stack_reserve);
+
if (pe_def_file->heap_commit != -1)
fprintf (out, "HEAPSIZE 0x%x,0x%x\n",
pe_def_file->heap_reserve, pe_def_file->heap_commit);
if (pe_def_file->num_section_defs > 0)
{
fprintf (out, "\nSECTIONS\n\n");
+
for (i = 0; i < pe_def_file->num_section_defs; i++)
{
fprintf (out, " ");
quoteput (pe_def_file->section_defs[i].name, out, 0);
+
if (pe_def_file->section_defs[i].class)
{
fprintf (out, " CLASS ");
quoteput (pe_def_file->section_defs[i].class, out, 0);
}
+
if (pe_def_file->section_defs[i].flag_read)
fprintf (out, " READ");
+
if (pe_def_file->section_defs[i].flag_write)
fprintf (out, " WRITE");
+
if (pe_def_file->section_defs[i].flag_execute)
fprintf (out, " EXECUTE");
+
if (pe_def_file->section_defs[i].flag_shared)
fprintf (out, " SHARED");
+
fprintf (out, "\n");
}
}
if (pe_def_file->num_exports > 0)
{
- fprintf (out, "\nEXPORTS\n\n");
+ fprintf (out, "EXPORTS\n");
+
for (i = 0; i < pe_def_file->num_exports; i++)
{
def_file_export *e = pe_def_file->exports + i;
fprintf (out, " ");
quoteput (e->name, out, 0);
+
if (e->internal_name && strcmp (e->internal_name, e->name))
{
fprintf (out, " = ");
quoteput (e->internal_name, out, 0);
}
+
if (e->ordinal != -1)
fprintf (out, " @%d", e->ordinal);
+
if (e->flag_private)
fprintf (out, " PRIVATE");
+
if (e->flag_constant)
fprintf (out, " CONSTANT");
+
if (e->flag_noname)
fprintf (out, " NONAME");
+
if (e->flag_data)
fprintf (out, " DATA");
if (pe_def_file->num_imports > 0)
{
fprintf (out, "\nIMPORTS\n\n");
+
for (i = 0; i < pe_def_file->num_imports; i++)
{
def_file_import *im = pe_def_file->imports + i;
fprintf (out, " ");
+
if (im->internal_name
&& (!im->name || strcmp (im->internal_name, im->name)))
{
quoteput (im->internal_name, out, 0);
fprintf (out, " = ");
}
+
quoteput (im->module->name, out, 0);
fprintf (out, ".");
+
if (im->name)
quoteput (im->name, out, 0);
else
fprintf (out, "%d", im->ordinal);
+
fprintf (out, "\n");
}
}
fprintf (out, _("; no contents available\n"));
if (fclose (out) == EOF)
- {
- /* xgettext:c-format */
- einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename);
- }
+ /* xgettext:c-format */
+ einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename);
}
-/************************************************************************
-
- Generate the import library
-
- ************************************************************************/
+/* Generate the import library. */
static asymbol **symtab;
static int symptr;
#define UNDSEC (asection *) &bfd_und_section
static asection *
-quick_section (abfd, name, flags, align)
- bfd *abfd;
- const char *name;
- int flags;
- int align;
+quick_section (bfd *abfd, const char *name, int flags, int align)
{
asection *sec;
asymbol *sym;
}
static void
-quick_symbol (abfd, n1, n2, n3, sec, flags, addr)
- bfd *abfd;
- char *n1;
- char *n2;
- char *n3;
- asection *sec;
- int flags;
- int addr;
+quick_symbol (bfd *abfd,
+ const char *n1,
+ const char *n2,
+ const char *n3,
+ asection *sec,
+ int flags,
+ int addr)
{
asymbol *sym;
- char *name = (char *) xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1);
+ char *name = xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1);
+
strcpy (name, n1);
strcat (name, n2);
strcat (name, n3);
static int relcount = 0, relsize = 0;
static void
-quick_reloc (abfd, address, which_howto, symidx)
- bfd *abfd;
- int address;
- int which_howto;
- int symidx;
+quick_reloc (bfd *abfd, int address, int which_howto, int symidx)
{
- if (relcount >= (relsize - 1))
+ if (relcount >= relsize - 1)
{
relsize += 10;
if (reltab)
- reltab = (arelent *) xrealloc (reltab, relsize * sizeof (arelent));
+ reltab = xrealloc (reltab, relsize * sizeof (arelent));
else
- reltab = (arelent *) xmalloc (relsize * sizeof (arelent));
+ reltab = xmalloc (relsize * sizeof (arelent));
}
reltab[relcount].address = address;
reltab[relcount].addend = 0;
save_relocs (asection *sec)
{
int i;
+
sec->relocation = reltab;
sec->reloc_count = relcount;
- sec->orelocation = (arelent **) xmalloc ((relcount + 1) * sizeof (arelent *));
+ sec->orelocation = xmalloc ((relcount + 1) * sizeof (arelent *));
for (i = 0; i < relcount; i++)
sec->orelocation[i] = sec->relocation + i;
sec->orelocation[relcount] = 0;
relcount = relsize = 0;
}
-/*
- * .section .idata$2
- * .global __head_my_dll
- * __head_my_dll:
- * .rva hname
- * .long 0
- * .long 0
- * .rva __my_dll_iname
- * .rva fthunk
- *
- * .section .idata$5
- * .long 0
- * fthunk:
- *
- * .section .idata$4
- * .long 0
- * hname:
- */
+/* .section .idata$2
+ .global __head_my_dll
+ __head_my_dll:
+ .rva hname
+ .long 0
+ .long 0
+ .rva __my_dll_iname
+ .rva fthunk
+
+ .section .idata$5
+ .long 0
+ fthunk:
+
+ .section .idata$4
+ .long 0
+ hname: */
static bfd *
-make_head (parent)
- bfd *parent;
+make_head (bfd *parent)
{
asection *id2, *id5, *id4;
unsigned char *d2, *d5, *d4;
char *oname;
bfd *abfd;
- oname = (char *) xmalloc (20);
+ oname = xmalloc (20);
sprintf (oname, "d%06d.o", tmp_seq);
tmp_seq++;
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
symptr = 0;
- symtab = (asymbol **) xmalloc (6 * sizeof (asymbol *));
+ symtab = xmalloc (6 * sizeof (asymbol *));
id2 = quick_section (abfd, ".idata$2", SEC_HAS_CONTENTS, 2);
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
the start of the list of sections from other objects. */
bfd_set_section_size (abfd, id2, 20);
- d2 = (unsigned char *) xmalloc (20);
+ d2 = xmalloc (20);
id2->contents = d2;
memset (d2, 0, 20);
- d2[0] = d2[16] = 4; /* reloc addend */
+ d2[0] = d2[16] = 4; /* Reloc addend. */
quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
quick_reloc (abfd, 12, BFD_RELOC_RVA, 4);
quick_reloc (abfd, 16, BFD_RELOC_RVA, 1);
save_relocs (id2);
bfd_set_section_size (abfd, id5, 4);
- d5 = (unsigned char *) xmalloc (4);
+ d5 = xmalloc (4);
id5->contents = d5;
memset (d5, 0, 4);
bfd_set_section_size (abfd, id4, 4);
- d4 = (unsigned char *) xmalloc (4);
+ d4 = xmalloc (4);
id4->contents = d4;
memset (d4, 0, 4);
return abfd;
}
-/*
- * .section .idata$4
- * .long 0
- * .section .idata$5
- * .long 0
- * .section idata$7
- * .global __my_dll_iname
- *__my_dll_iname:
- * .asciz "my.dll"
- */
+/* .section .idata$4
+ .long 0
+ .section .idata$5
+ .long 0
+ .section idata$7
+ .global __my_dll_iname
+ __my_dll_iname:
+ .asciz "my.dll" */
static bfd *
-make_tail (parent)
- bfd *parent;
+make_tail (bfd *parent)
{
asection *id4, *id5, *id7;
unsigned char *d4, *d5, *d7;
char *oname;
bfd *abfd;
- oname = (char *) xmalloc (20);
+ oname = xmalloc (20);
sprintf (oname, "d%06d.o", tmp_seq);
tmp_seq++;
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
symptr = 0;
- symtab = (asymbol **) xmalloc (5 * sizeof (asymbol *));
+ symtab = xmalloc (5 * sizeof (asymbol *));
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
quick_symbol (abfd, U (""), dll_symname, "_iname", id7, BSF_GLOBAL, 0);
bfd_set_section_size (abfd, id4, 4);
- d4 = (unsigned char *) xmalloc (4);
+ d4 = xmalloc (4);
id4->contents = d4;
memset (d4, 0, 4);
bfd_set_section_size (abfd, id5, 4);
- d5 = (unsigned char *) xmalloc (4);
+ d5 = xmalloc (4);
id5->contents = d5;
memset (d5, 0, 4);
if (len & 1)
len++;
bfd_set_section_size (abfd, id7, len);
- d7 = (unsigned char *) xmalloc (len);
+ d7 = xmalloc (len);
id7->contents = d7;
- strcpy (d7, dll_filename);
+ strcpy ((char *) d7, dll_filename);
bfd_set_symtab (abfd, symtab, symptr);
return abfd;
}
-/*
- * .text
- * .global _function
- * .global ___imp_function
- * .global __imp__function
- *_function:
- * jmp *__imp__function:
- *
- * .section idata$7
- * .long __head_my_dll
- *
- * .section .idata$5
- *___imp_function:
- *__imp__function:
- *iat?
- * .section .idata$4
- *iat?
- * .section .idata$6
- *ID<ordinal>:
- * .short <hint>
- * .asciz "function" xlate? (add underscore, kill at)
- */
-
-static unsigned char jmp_ix86_bytes[] = {
+/* .text
+ .global _function
+ .global ___imp_function
+ .global __imp__function
+ _function:
+ jmp *__imp__function:
+
+ .section idata$7
+ .long __head_my_dll
+
+ .section .idata$5
+ ___imp_function:
+ __imp__function:
+ iat?
+ .section .idata$4
+ iat?
+ .section .idata$6
+ ID<ordinal>:
+ .short <hint>
+ .asciz "function" xlate? (add underscore, kill at) */
+
+static unsigned char jmp_ix86_bytes[] =
+{
0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
};
-/*
- *_function:
- * mov.l ip+8,r0
- * mov.l @r0,r0
- * jmp @r0
- * nop
- * .dw __imp_function
- */
+/* _function:
+ mov.l ip+8,r0
+ mov.l @r0,r0
+ jmp @r0
+ nop
+ .dw __imp_function */
-static unsigned char jmp_sh_bytes[] = {
+static unsigned char jmp_sh_bytes[] =
+{
0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
};
-/*
- *_function:
- * lui $t0,<high:__imp_function>
- * lw $t0,<low:__imp_function>
- * jr $t0
- * nop
- */
+/* _function:
+ lui $t0,<high:__imp_function>
+ lw $t0,<low:__imp_function>
+ jr $t0
+ nop */
-static unsigned char jmp_mips_bytes[] = {
+static unsigned char jmp_mips_bytes[] =
+{
0x00, 0x00, 0x08, 0x3c, 0x00, 0x00, 0x08, 0x8d,
0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00
};
static bfd *
-make_one (exp, parent)
- def_file_export *exp;
- bfd *parent;
+make_one (def_file_export *exp, bfd *parent)
{
asection *tx, *id7, *id5, *id4, *id6;
unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL;
jmp_bytes = jmp_mips_bytes;
jmp_byte_count = sizeof (jmp_mips_bytes);
break;
+ default:
+ abort ();
}
- oname = (char *) xmalloc (20);
+ oname = xmalloc (20);
sprintf (oname, "d%06d.o", tmp_seq);
tmp_seq++;
bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
symptr = 0;
- symtab = (asymbol **) xmalloc (10 * sizeof (asymbol *));
+ symtab = xmalloc (11 * sizeof (asymbol *));
tx = quick_section (abfd, ".text", SEC_CODE|SEC_HAS_CONTENTS, 2);
id7 = quick_section (abfd, ".idata$7", SEC_HAS_CONTENTS, 2);
id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2);
- if (! exp->flag_data)
- quick_symbol (abfd, U (""), exp->internal_name, "", tx, BSF_GLOBAL, 0);
- quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC, BSF_GLOBAL, 0);
- quick_symbol (abfd, U ("_imp__"), exp->internal_name, "", id5, BSF_GLOBAL, 0);
+
+ if (*exp->internal_name == '@')
+ {
+ quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
+ BSF_GLOBAL, 0);
+ if (! exp->flag_data)
+ quick_symbol (abfd, "", exp->internal_name, "", tx, BSF_GLOBAL, 0);
+ quick_symbol (abfd, U ("_imp_"), exp->internal_name, "", id5,
+ BSF_GLOBAL, 0);
+ /* Fastcall applies only to functions,
+ so no need for auto-import symbol. */
+ }
+ else
+ {
+ quick_symbol (abfd, U ("_head_"), dll_symname, "", UNDSEC,
+ BSF_GLOBAL, 0);
+ if (! exp->flag_data)
+ quick_symbol (abfd, U (""), exp->internal_name, "", tx,
+ BSF_GLOBAL, 0);
+ quick_symbol (abfd, U ("_imp__"), exp->internal_name, "", id5,
+ BSF_GLOBAL, 0);
+ /* Symbol to reference ord/name of imported
+ data symbol, used to implement auto-import. */
+ if (exp->flag_data)
+ quick_symbol (abfd, U("_nm__"), exp->internal_name, "", id6,
+ BSF_GLOBAL,0);
+ }
if (pe_dll_compat_implib)
- quick_symbol (abfd, U ("__imp_"), exp->internal_name, "",
- id5, BSF_GLOBAL, 0);
+ quick_symbol (abfd, U ("__imp_"), exp->internal_name, "", id5,
+ BSF_GLOBAL, 0);
if (! exp->flag_data)
- {
- bfd_set_section_size (abfd, tx, jmp_byte_count);
- td = (unsigned char *) xmalloc (jmp_byte_count);
- tx->contents = td;
- memcpy (td, jmp_bytes, jmp_byte_count);
- switch (pe_details->pe_arch)
- {
- case PE_ARCH_i386:
- quick_reloc (abfd, 2, BFD_RELOC_32, 2);
- break;
- case PE_ARCH_sh:
- quick_reloc (abfd, 8, BFD_RELOC_32, 2);
- break;
- case PE_ARCH_mips:
- quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2);
- quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */
- quick_reloc (abfd, 4, BFD_RELOC_LO16, 2);
- break;
- }
- save_relocs (tx);
- }
+ {
+ bfd_set_section_size (abfd, tx, jmp_byte_count);
+ td = xmalloc (jmp_byte_count);
+ tx->contents = td;
+ memcpy (td, jmp_bytes, jmp_byte_count);
+
+ switch (pe_details->pe_arch)
+ {
+ case PE_ARCH_i386:
+ quick_reloc (abfd, 2, BFD_RELOC_32, 2);
+ break;
+ case PE_ARCH_sh:
+ quick_reloc (abfd, 8, BFD_RELOC_32, 2);
+ break;
+ case PE_ARCH_mips:
+ quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2);
+ quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */
+ quick_reloc (abfd, 4, BFD_RELOC_LO16, 2);
+ break;
+ default:
+ abort ();
+ }
+ save_relocs (tx);
+ }
bfd_set_section_size (abfd, id7, 4);
- d7 = (unsigned char *) xmalloc (4);
+ d7 = xmalloc (4);
id7->contents = d7;
memset (d7, 0, 4);
- quick_reloc (abfd, 0, BFD_RELOC_RVA, 6);
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 5);
save_relocs (id7);
bfd_set_section_size (abfd, id5, 4);
- d5 = (unsigned char *) xmalloc (4);
+ d5 = xmalloc (4);
id5->contents = d5;
memset (d5, 0, 4);
+
if (exp->flag_noname)
{
d5[0] = exp->ordinal;
}
bfd_set_section_size (abfd, id4, 4);
- d4 = (unsigned char *) xmalloc (4);
+ d4 = xmalloc (4);
id4->contents = d4;
memset (d4, 0, 4);
+
if (exp->flag_noname)
{
d4[0] = exp->ordinal;
if (len & 1)
len++;
bfd_set_section_size (abfd, id6, len);
- d6 = (unsigned char *) xmalloc (len);
+ d6 = xmalloc (len);
id6->contents = d6;
memset (d6, 0, len);
d6[0] = exp->hint & 0xff;
d6[1] = exp->hint >> 8;
- strcpy (d6 + 2, exp->name);
+ strcpy ((char *) d6 + 2, exp->name);
}
bfd_set_symtab (abfd, symtab, symptr);
return abfd;
}
+static bfd *
+make_singleton_name_thunk (const char *import, bfd *parent)
+{
+ /* Name thunks go to idata$4. */
+ asection *id4;
+ unsigned char *d4;
+ char *oname;
+ bfd *abfd;
+
+ oname = xmalloc (20);
+ sprintf (oname, "nmth%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target (pe_details->object_target, abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
+
+ symptr = 0;
+ symtab = xmalloc (3 * sizeof (asymbol *));
+ id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
+ quick_symbol (abfd, U ("_nm_thnk_"), import, "", id4, BSF_GLOBAL, 0);
+ quick_symbol (abfd, U ("_nm_"), import, "", UNDSEC, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, id4, 8);
+ d4 = xmalloc (4);
+ id4->contents = d4;
+ memset (d4, 0, 8);
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 2);
+ save_relocs (id4);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, id4, d4, 0, 8);
+
+ bfd_make_readable (abfd);
+ return abfd;
+}
+
+static char *
+make_import_fixup_mark (arelent *rel)
+{
+ /* We convert reloc to symbol, for later reference. */
+ static int counter;
+ static char *fixup_name = NULL;
+ static size_t buffer_len = 0;
+
+ struct bfd_symbol *sym = *rel->sym_ptr_ptr;
+
+ bfd *abfd = bfd_asymbol_bfd (sym);
+ struct bfd_link_hash_entry *bh;
+
+ if (!fixup_name)
+ {
+ fixup_name = xmalloc (384);
+ buffer_len = 384;
+ }
+
+ if (strlen (sym->name) + 25 > buffer_len)
+ /* Assume 25 chars for "__fu" + counter + "_". If counter is
+ bigger than 20 digits long, we've got worse problems than
+ overflowing this buffer... */
+ {
+ free (fixup_name);
+ /* New buffer size is length of symbol, plus 25, but
+ then rounded up to the nearest multiple of 128. */
+ buffer_len = ((strlen (sym->name) + 25) + 127) & ~127;
+ fixup_name = xmalloc (buffer_len);
+ }
+
+ sprintf (fixup_name, "__fu%d_%s", counter++, sym->name);
+
+ bh = NULL;
+ bfd_coff_link_add_one_symbol (&link_info, abfd, fixup_name, BSF_GLOBAL,
+ current_sec, /* sym->section, */
+ rel->address, NULL, TRUE, FALSE, &bh);
+
+ if (0)
+ {
+ struct coff_link_hash_entry *myh;
+
+ myh = (struct coff_link_hash_entry *) bh;
+ printf ("type:%d\n", myh->type);
+ printf ("%s\n", myh->root.u.def.section->name);
+ }
+
+ return fixup_name;
+}
+
+/* .section .idata$3
+ .rva __nm_thnk_SYM (singleton thunk with name of func)
+ .long 0
+ .long 0
+ .rva __my_dll_iname (name of dll)
+ .rva __fuNN_SYM (pointer to reference (address) in text) */
+
+static bfd *
+make_import_fixup_entry (const char *name,
+ const char *fixup_name,
+ const char *dll_symname,
+ bfd *parent)
+{
+ asection *id3;
+ unsigned char *d3;
+ char *oname;
+ bfd *abfd;
+
+ oname = xmalloc (20);
+ sprintf (oname, "fu%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target (pe_details->object_target, abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
+
+ symptr = 0;
+ symtab = xmalloc (6 * sizeof (asymbol *));
+ id3 = quick_section (abfd, ".idata$3", SEC_HAS_CONTENTS, 2);
+
+ quick_symbol (abfd, U ("_nm_thnk_"), name, "", UNDSEC, BSF_GLOBAL, 0);
+ quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
+ quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, id3, 20);
+ d3 = xmalloc (20);
+ id3->contents = d3;
+ memset (d3, 0, 20);
+
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
+ quick_reloc (abfd, 12, BFD_RELOC_RVA, 2);
+ quick_reloc (abfd, 16, BFD_RELOC_RVA, 3);
+ save_relocs (id3);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, id3, d3, 0, 20);
+
+ bfd_make_readable (abfd);
+ return abfd;
+}
+
+/* .section .rdata_runtime_pseudo_reloc
+ .long addend
+ .rva __fuNN_SYM (pointer to reference (address) in text) */
+
+static bfd *
+make_runtime_pseudo_reloc (const char *name ATTRIBUTE_UNUSED,
+ const char *fixup_name,
+ int addend,
+ bfd *parent)
+{
+ asection *rt_rel;
+ unsigned char *rt_rel_d;
+ char *oname;
+ bfd *abfd;
+
+ oname = xmalloc (20);
+ sprintf (oname, "rtr%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target (pe_details->object_target, abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
+
+ symptr = 0;
+ symtab = xmalloc (2 * sizeof (asymbol *));
+ rt_rel = quick_section (abfd, ".rdata_runtime_pseudo_reloc",
+ SEC_HAS_CONTENTS, 2);
+
+ quick_symbol (abfd, "", fixup_name, "", UNDSEC, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, rt_rel, 8);
+ rt_rel_d = xmalloc (8);
+ rt_rel->contents = rt_rel_d;
+ memset (rt_rel_d, 0, 8);
+ bfd_put_32 (abfd, addend, rt_rel_d);
+
+ quick_reloc (abfd, 4, BFD_RELOC_RVA, 1);
+ save_relocs (rt_rel);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, rt_rel, rt_rel_d, 0, 8);
+
+ bfd_make_readable (abfd);
+ return abfd;
+}
+
+/* .section .rdata
+ .rva __pei386_runtime_relocator */
+
+static bfd *
+pe_create_runtime_relocator_reference (bfd *parent)
+{
+ asection *extern_rt_rel;
+ unsigned char *extern_rt_rel_d;
+ char *oname;
+ bfd *abfd;
+
+ oname = xmalloc (20);
+ sprintf (oname, "ertr%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target (pe_details->object_target, abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, pe_details->bfd_arch, 0);
+
+ symptr = 0;
+ symtab = xmalloc (2 * sizeof (asymbol *));
+ extern_rt_rel = quick_section (abfd, ".rdata", SEC_HAS_CONTENTS, 2);
+
+ quick_symbol (abfd, "", "__pei386_runtime_relocator", "", UNDSEC,
+ BSF_NO_FLAGS, 0);
+
+ bfd_set_section_size (abfd, extern_rt_rel, 4);
+ extern_rt_rel_d = xmalloc (4);
+ extern_rt_rel->contents = extern_rt_rel_d;
+
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 1);
+ save_relocs (extern_rt_rel);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, extern_rt_rel, extern_rt_rel_d, 0, 4);
+
+ bfd_make_readable (abfd);
+ return abfd;
+}
+
void
-pe_dll_generate_implib (def, impfilename)
- def_file *def;
- const char *impfilename;
+pe_create_import_fixup (arelent *rel, asection *s, int addend)
+{
+ char buf[300];
+ struct bfd_symbol *sym = *rel->sym_ptr_ptr;
+ struct bfd_link_hash_entry *name_thunk_sym;
+ const char *name = sym->name;
+ char *fixup_name = make_import_fixup_mark (rel);
+ bfd *b;
+
+ sprintf (buf, U ("_nm_thnk_%s"), name);
+
+ name_thunk_sym = bfd_link_hash_lookup (link_info.hash, buf, 0, 0, 1);
+
+ if (!name_thunk_sym || name_thunk_sym->type != bfd_link_hash_defined)
+ {
+ bfd *b = make_singleton_name_thunk (name, output_bfd);
+ add_bfd_to_link (b, b->filename, &link_info);
+
+ /* If we ever use autoimport, we have to cast text section writable. */
+ config.text_read_only = FALSE;
+ output_bfd->flags &= ~WP_TEXT;
+ }
+
+ if (addend == 0 || link_info.pei386_runtime_pseudo_reloc)
+ {
+ extern char * pe_data_import_dll;
+ char * dll_symname = pe_data_import_dll ? pe_data_import_dll : "unknown";
+
+ b = make_import_fixup_entry (name, fixup_name, dll_symname, output_bfd);
+ add_bfd_to_link (b, b->filename, &link_info);
+ }
+
+ if (addend != 0)
+ {
+ if (link_info.pei386_runtime_pseudo_reloc)
+ {
+ if (pe_dll_extra_pe_debug)
+ printf ("creating runtime pseudo-reloc entry for %s (addend=%d)\n",
+ fixup_name, addend);
+ b = make_runtime_pseudo_reloc (name, fixup_name, addend, output_bfd);
+ add_bfd_to_link (b, b->filename, &link_info);
+
+ if (runtime_pseudo_relocs_created == 0)
+ {
+ b = pe_create_runtime_relocator_reference (output_bfd);
+ add_bfd_to_link (b, b->filename, &link_info);
+ }
+ runtime_pseudo_relocs_created++;
+ }
+ else
+ {
+ einfo (_("%C: variable '%T' can't be auto-imported. Please read the documentation for ld's --enable-auto-import for details.\n"),
+ s->owner, s, rel->address, sym->name);
+ einfo ("%X");
+ }
+ }
+}
+
+
+void
+pe_dll_generate_implib (def_file *def, const char *impfilename)
{
int i;
bfd *ar_head;
dll_filename = (def->name) ? def->name : dll_name;
dll_symname = xstrdup (dll_filename);
for (i = 0; dll_symname[i]; i++)
- if (!isalnum ((unsigned char) dll_symname[i]))
+ if (!ISALNUM (dll_symname[i]))
dll_symname[i] = '_';
- unlink (impfilename);
+ unlink_if_ordinary (impfilename);
outarch = bfd_openw (impfilename, 0);
outarch->has_armap = 1;
/* Work out a reasonable size of things to put onto one line. */
-
ar_head = make_head (outarch);
for (i = 0; i < def->num_exports; i++)
/* The import library doesn't know about the internal name. */
char *internal = def->exports[i].internal_name;
bfd *n;
+
+ /* Don't add PRIVATE entries to import lib. */
+ if (pe_def_file->exports[i].flag_private)
+ continue;
def->exports[i].internal_name = def->exports[i].name;
n = make_one (def->exports + i, outarch);
n->next = head;
return;
/* Now stick them all into the archive. */
-
ar_head->next = head;
ar_tail->next = ar_head;
head = ar_tail;
}
static void
-add_bfd_to_link (abfd, name, link_info)
- bfd *abfd;
- char *name;
- struct bfd_link_info *link_info;
+add_bfd_to_link (bfd *abfd, const char *name, struct bfd_link_info *link_info)
{
lang_input_statement_type *fake_file;
+
fake_file = lang_add_input_file (name,
lang_input_file_is_fake_enum,
NULL);
fake_file->the_bfd = abfd;
ldlang_add_file (fake_file);
+
if (!bfd_link_add_symbols (abfd, link_info))
einfo ("%Xaddsym %s: %s\n", name, bfd_errmsg (bfd_get_error ()));
}
void
-pe_process_import_defs (output_bfd, link_info)
- bfd *output_bfd;
- struct bfd_link_info *link_info;
+pe_process_import_defs (bfd *output_bfd, struct bfd_link_info *link_info)
{
def_file_module *module;
+
pe_dll_id_target (bfd_get_target (output_bfd));
if (!pe_def_file)
dll_filename = module->name;
dll_symname = xstrdup (module->name);
for (i = 0; dll_symname[i]; i++)
- if (!isalnum (dll_symname[i]))
+ if (!ISALNUM (dll_symname[i]))
dll_symname[i] = '_';
do_this_dll = 0;
{
def_file_export exp;
struct bfd_link_hash_entry *blhe;
-
+ int lead_at = (*pe_def_file->imports[i].internal_name == '@');
/* See if we need this import. */
- char *name = (char *) xmalloc (strlen (pe_def_file->imports[i].internal_name) + 2 + 6);
- sprintf (name, "%s%s", U (""), pe_def_file->imports[i].internal_name);
+ size_t len = strlen (pe_def_file->imports[i].internal_name);
+ char *name = xmalloc (len + 2 + 6);
+
+ if (lead_at)
+ sprintf (name, "%s%s", "",
+ pe_def_file->imports[i].internal_name);
+ else
+ sprintf (name, "%s%s",U (""),
+ pe_def_file->imports[i].internal_name);
+
blhe = bfd_link_hash_lookup (link_info->hash, name,
- false, false, false);
+ FALSE, FALSE, FALSE);
+
if (!blhe || (blhe && blhe->type != bfd_link_hash_undefined))
{
- sprintf (name, "%s%s", U ("_imp__"),
- pe_def_file->imports[i].internal_name);
+ if (lead_at)
+ sprintf (name, "%s%s", U ("_imp_"),
+ pe_def_file->imports[i].internal_name);
+ else
+ sprintf (name, "%s%s", U ("_imp__"),
+ pe_def_file->imports[i].internal_name);
+
blhe = bfd_link_hash_lookup (link_info->hash, name,
- false, false, false);
+ FALSE, FALSE, FALSE);
}
free (name);
+
if (blhe && blhe->type == bfd_link_hash_undefined)
{
bfd *one;
exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0;
exp.flag_private = 0;
exp.flag_constant = 0;
- exp.flag_data = 0;
+ exp.flag_data = pe_def_file->imports[i].data;
exp.flag_noname = exp.name ? 0 : 1;
one = make_one (&exp, output_bfd);
add_bfd_to_link (one, one->filename, link_info);
}
}
-/************************************************************************
-
- We were handed a *.DLL file. Parse it and turn it into a set of
- IMPORTS directives in the def file. Return true if the file was
- handled, false if not.
-
- ************************************************************************/
+/* We were handed a *.DLL file. Parse it and turn it into a set of
+ IMPORTS directives in the def file. Return TRUE if the file was
+ handled, FALSE if not. */
static unsigned int
-pe_get16 (abfd, where)
- bfd *abfd;
- int where;
+pe_get16 (bfd *abfd, int where)
{
unsigned char b[2];
- bfd_seek (abfd, where, SEEK_SET);
- bfd_read (b, 1, 2, abfd);
+
+ bfd_seek (abfd, (file_ptr) where, SEEK_SET);
+ bfd_bread (b, (bfd_size_type) 2, abfd);
return b[0] + (b[1] << 8);
}
static unsigned int
-pe_get32 (abfd, where)
- bfd *abfd;
- int where;
+pe_get32 (bfd *abfd, int where)
{
unsigned char b[4];
- bfd_seek (abfd, where, SEEK_SET);
- bfd_read (b, 1, 4, abfd);
+
+ bfd_seek (abfd, (file_ptr) where, SEEK_SET);
+ bfd_bread (b, (bfd_size_type) 4, abfd);
return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
}
-#if 0 /* This is not currently used. */
-
static unsigned int
-pe_as16 (ptr)
- void *ptr;
+pe_as32 (void *ptr)
{
unsigned char *b = ptr;
- return b[0] + (b[1] << 8);
-}
-#endif
-
-static unsigned int
-pe_as32 (ptr)
- void *ptr;
-{
- unsigned char *b = ptr;
return b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24);
}
-boolean
-pe_implied_import_dll (filename)
- const char *filename;
+bfd_boolean
+pe_implied_import_dll (const char *filename)
{
bfd *dll;
unsigned long pe_header_offset, opthdr_ofs, num_entries, i;
unsigned long export_rva, export_size, nsections, secptr, expptr;
- unsigned char *expdata, *erva;
+ unsigned long exp_funcbase;
+ unsigned char *expdata;
+ char *erva;
unsigned long name_rvas, ordinals, nexp, ordbase;
const char *dll_name;
+ /* Initialization with start > end guarantees that is_data
+ will not be set by mistake, and avoids compiler warning. */
+ unsigned long data_start = 1;
+ unsigned long data_end = 0;
+ unsigned long rdata_start = 1;
+ unsigned long rdata_end = 0;
+ unsigned long bss_start = 1;
+ unsigned long bss_end = 0;
/* No, I can't use bfd here. kernel32.dll puts its export table in
the middle of the .rdata section. */
-
dll = bfd_openr (filename, pe_details->target_name);
if (!dll)
{
einfo ("%Xopen %s: %s\n", filename, bfd_errmsg (bfd_get_error ()));
- return false;
+ return FALSE;
}
+
/* PEI dlls seem to be bfd_objects. */
if (!bfd_check_format (dll, bfd_object))
{
einfo ("%X%s: this doesn't appear to be a DLL\n", filename);
- return false;
+ return FALSE;
}
- dll_name = filename;
- for (i = 0; filename[i]; i++)
- if (filename[i] == '/' || filename[i] == '\\' || filename[i] == ':')
- dll_name = filename + i + 1;
-
+ /* Get pe_header, optional header and numbers of export entries. */
pe_header_offset = pe_get32 (dll, 0x3c);
opthdr_ofs = pe_header_offset + 4 + 20;
num_entries = pe_get32 (dll, opthdr_ofs + 92);
- if (num_entries < 1) /* no exports */
- return false;
+
+ if (num_entries < 1) /* No exports. */
+ return FALSE;
+
export_rva = pe_get32 (dll, opthdr_ofs + 96);
export_size = pe_get32 (dll, opthdr_ofs + 100);
nsections = pe_get16 (dll, pe_header_offset + 4 + 2);
secptr = (pe_header_offset + 4 + 20 +
pe_get16 (dll, pe_header_offset + 4 + 16));
expptr = 0;
+
+ /* Get the rva and size of the export section. */
for (i = 0; i < nsections; i++)
{
char sname[8];
unsigned long vaddr = pe_get32 (dll, secptr1 + 12);
unsigned long vsize = pe_get32 (dll, secptr1 + 16);
unsigned long fptr = pe_get32 (dll, secptr1 + 20);
- bfd_seek (dll, secptr1, SEEK_SET);
- bfd_read (sname, 1, 8, dll);
+
+ bfd_seek (dll, (file_ptr) secptr1, SEEK_SET);
+ bfd_bread (sname, (bfd_size_type) 8, dll);
+
if (vaddr <= export_rva && vaddr + vsize > export_rva)
{
expptr = fptr + (export_rva - vaddr);
}
}
- expdata = (unsigned char *) xmalloc (export_size);
- bfd_seek (dll, expptr, SEEK_SET);
- bfd_read (expdata, 1, export_size, dll);
- erva = expdata - export_rva;
+ /* Scan sections and store the base and size of the
+ data and bss segments in data/base_start/end. */
+ for (i = 0; i < nsections; i++)
+ {
+ unsigned long secptr1 = secptr + 40 * i;
+ unsigned long vsize = pe_get32 (dll, secptr1 + 8);
+ unsigned long vaddr = pe_get32 (dll, secptr1 + 12);
+ unsigned long flags = pe_get32 (dll, secptr1 + 36);
+ char sec_name[9];
+
+ sec_name[8] = '\0';
+ bfd_seek (dll, (file_ptr) secptr1 + 0, SEEK_SET);
+ bfd_bread (sec_name, (bfd_size_type) 8, dll);
+
+ if (strcmp(sec_name,".data") == 0)
+ {
+ data_start = vaddr;
+ data_end = vaddr + vsize;
+
+ if (pe_dll_extra_pe_debug)
+ printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
+ __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags);
+ }
+ else if (strcmp(sec_name,".rdata") == 0)
+ {
+ rdata_start = vaddr;
+ rdata_end = vaddr + vsize;
+
+ if (pe_dll_extra_pe_debug)
+ printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
+ __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags);
+ }
+ else if (strcmp (sec_name,".bss") == 0)
+ {
+ bss_start = vaddr;
+ bss_end = vaddr + vsize;
+
+ if (pe_dll_extra_pe_debug)
+ printf ("%s %s: 0x%08lx-0x%08lx (0x%08lx)\n",
+ __FUNCTION__, sec_name, vaddr, vaddr + vsize, flags);
+ }
+ }
+
+ expdata = xmalloc (export_size);
+ bfd_seek (dll, (file_ptr) expptr, SEEK_SET);
+ bfd_bread (expdata, (bfd_size_type) export_size, dll);
+ erva = (char *) expdata - export_rva;
if (pe_def_file == 0)
pe_def_file = def_file_empty ();
name_rvas = pe_as32 (expdata + 32);
ordinals = pe_as32 (expdata + 36);
ordbase = pe_as32 (expdata + 16);
+ exp_funcbase = pe_as32 (expdata + 28);
+
+ /* Use internal dll name instead of filename
+ to enable symbolic dll linking. */
+ dll_name = erva + pe_as32 (expdata + 12);
+
+ /* Check to see if the dll has already been added to
+ the definition list and if so return without error.
+ This avoids multiple symbol definitions. */
+ if (def_get_module (pe_def_file, dll_name))
+ {
+ if (pe_dll_extra_pe_debug)
+ printf ("%s is already loaded\n", dll_name);
+ return TRUE;
+ }
+
+ /* Iterate through the list of symbols. */
for (i = 0; i < nexp; i++)
{
+ /* Pointer to the names vector. */
unsigned long name_rva = pe_as32 (erva + name_rvas + i * 4);
def_file_import *imp;
- imp = def_file_add_import (pe_def_file, erva + name_rva, dll_name,
- i, 0);
+ /* Pointer to the function address vector. */
+ unsigned long func_rva = pe_as32 (erva + exp_funcbase + i * 4);
+ int is_data = 0;
+
+ /* Skip unwanted symbols, which are
+ exported in buggy auto-import releases. */
+ if (strncmp (erva + name_rva, "_nm_", 4) != 0)
+ {
+ /* is_data is true if the address is in the data, rdata or bss
+ segment. */
+ is_data =
+ (func_rva >= data_start && func_rva < data_end)
+ || (func_rva >= rdata_start && func_rva < rdata_end)
+ || (func_rva >= bss_start && func_rva < bss_end);
+
+ imp = def_file_add_import (pe_def_file, erva + name_rva,
+ dll_name, i, 0);
+ /* Mark symbol type. */
+ imp->data = is_data;
+
+ if (pe_dll_extra_pe_debug)
+ printf ("%s dll-name: %s sym: %s addr: 0x%lx %s\n",
+ __FUNCTION__, dll_name, erva + name_rva,
+ func_rva, is_data ? "(data)" : "");
+ }
}
- return true;
+ return TRUE;
}
-/************************************************************************
-
- These are the main functions, called from the emulation. The first
- is called after the bfds are read, so we can guess at how much space
- we need. The second is called after everything is placed, so we
- can put the right values in place.
-
- ************************************************************************/
+/* These are the main functions, called from the emulation. The first
+ is called after the bfds are read, so we can guess at how much space
+ we need. The second is called after everything is placed, so we
+ can put the right values in place. */
void
-pe_dll_build_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+pe_dll_build_sections (bfd *abfd, struct bfd_link_info *info)
{
pe_dll_id_target (bfd_get_target (abfd));
process_def_file (abfd, info);
+ if (pe_def_file->num_exports == 0 && !info->shared)
+ return;
+
generate_edata (abfd, info);
build_filler_bfd (1);
}
void
-pe_exe_build_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
+pe_exe_build_sections (bfd *abfd, struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
pe_dll_id_target (bfd_get_target (abfd));
build_filler_bfd (0);
}
void
-pe_dll_fill_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+pe_dll_fill_sections (bfd *abfd, struct bfd_link_info *info)
{
pe_dll_id_target (bfd_get_target (abfd));
image_base = pe_data (abfd)->pe_opthdr.ImageBase;
/* Resize the sections. */
lang_size_sections (stat_ptr->head, abs_output_section,
- &stat_ptr->head, 0, (bfd_vma) 0, false);
+ &stat_ptr->head, 0, 0, NULL, TRUE);
/* Redo special stuff. */
ldemul_after_allocation ();
/* Do the assignments again. */
- lang_do_assignments (stat_ptr->head,
- abs_output_section,
- (fill_type) 0, (bfd_vma) 0);
+ lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0);
}
fill_edata (abfd, info);
- pe_data (abfd)->dll = 1;
+ if (info->shared && !info->pie)
+ pe_data (abfd)->dll = 1;
edata_s->contents = edata_d;
reloc_s->contents = reloc_d;
}
void
-pe_exe_fill_sections (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+pe_exe_fill_sections (bfd *abfd, struct bfd_link_info *info)
{
pe_dll_id_target (bfd_get_target (abfd));
image_base = pe_data (abfd)->pe_opthdr.ImageBase;
/* Resize the sections. */
lang_size_sections (stat_ptr->head, abs_output_section,
- &stat_ptr->head, 0, (bfd_vma) 0, false);
+ &stat_ptr->head, 0, 0, NULL, TRUE);
/* Redo special stuff. */
ldemul_after_allocation ();
/* Do the assignments again. */
- lang_do_assignments (stat_ptr->head,
- abs_output_section,
- (fill_type) 0, (bfd_vma) 0);
+ lang_do_assignments (stat_ptr->head, abs_output_section, NULL, 0);
}
reloc_s->contents = reloc_d;
}
projects / binutils.git / blobdiff