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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /ld/pe-dll.c
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19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'ld/pe-dll.c')
-rw-r--r--ld/pe-dll.c1651
1 files changed, 1651 insertions, 0 deletions
diff --git a/ld/pe-dll.c b/ld/pe-dll.c
new file mode 100644
index 0000000..6d7306c
--- /dev/null
+++ b/ld/pe-dll.c
@@ -0,0 +1,1651 @@
+/* Routines to help build PEI-format DLLs (Win32 etc)
+ Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+ Written by DJ Delorie <dj@cygnus.com>
+
+ This file is part of GLD, the Gnu Linker.
+
+ GLD is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GLD is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GLD; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libiberty.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 "ldmain.h"
+#include "ldemul.h"
+#include "coff/internal.h"
+#include "../bfd/libcoff.h"
+#include "deffile.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;
+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;
+
+/************************************************************************
+
+ static variables and types
+
+ ************************************************************************/
+
+static bfd_vma image_base;
+
+static bfd *filler_bfd;
+static struct sec *edata_s, *reloc_s;
+static unsigned char *edata_d, *reloc_d;
+static int edata_sz, reloc_sz;
+
+/************************************************************************
+
+ Helper functions for qsort. Relocs must be sorted so that we can write
+ them out by pages.
+
+ ************************************************************************/
+
+static int
+reloc_sort (va, vb)
+ const void *va, *vb;
+{
+ bfd_vma a = *(bfd_vma *) va;
+ bfd_vma b = *(bfd_vma *) vb;
+ return (a > b) - (a < b);
+}
+
+static int
+pe_export_sort (va, vb)
+ const void *va, *vb;
+{
+ def_file_export *a = (def_file_export *) va;
+ def_file_export *b = (def_file_export *) vb;
+ return strcmp (a->name, b->name);
+}
+
+/************************************************************************
+
+ 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 int export_table_size;
+static int count_exported;
+static int count_exported_byname;
+static int count_with_ordinals;
+static const char *dll_name;
+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;
+static struct exclude_list_struct *excludes = 0;
+
+void
+pe_dll_add_excludes (new_excludes)
+ const char *new_excludes;
+{
+ char *local_copy;
+ char *exclude_string;
+
+ local_copy = xstrdup (new_excludes);
+
+ exclude_string = strtok (local_copy, ",:");
+ for (; exclude_string; exclude_string = strtok (NULL, ",:"))
+ {
+ 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);
+ strcpy (new_exclude->string, exclude_string);
+ new_exclude->next = excludes;
+ excludes = new_exclude;
+ }
+
+ free (local_copy);
+}
+
+static int
+auto_export (d, n)
+ def_file *d;
+ const char *n;
+{
+ int i;
+ struct exclude_list_struct *ex;
+ 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;
+ }
+ for (ex = excludes; ex; ex = ex->next)
+ if (strcmp (n, ex->string) == 0)
+ return 0;
+ return 1;
+}
+
+static void
+process_def_file (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ int i, j;
+ struct bfd_link_hash_entry *blhe;
+ bfd *b;
+ struct sec *s;
+ def_file_export *e=0;
+
+ if (!pe_def_file)
+ pe_def_file = def_file_empty ();
+
+ /* 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);
+ 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 (pe_dll_export_everything || pe_def_file->num_exports == 0)
+ {
+ for (b = info->input_bfds; b; b = b->link_next)
+ {
+ asymbol **symbols;
+ int nsyms, symsize;
+
+ symsize = bfd_get_symtab_upper_bound (b);
+ symbols = (asymbol **) xmalloc (symsize);
+ nsyms = bfd_canonicalize_symtab (b, symbols);
+
+ for (j = 0; j < nsyms; j++)
+ {
+ if ((symbols[j]->flags & (BSF_FUNCTION | BSF_GLOBAL))
+ == (BSF_FUNCTION | BSF_GLOBAL))
+ {
+ const char *sn = symbols[j]->name;
+ if (*sn == '_')
+ sn++;
+ if (auto_export (pe_def_file, sn))
+ def_file_add_export (pe_def_file, sn, 0, -1);
+ }
+ }
+ }
+ }
+
+#undef NE
+#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);
+ *(strchr (tmp, '@')) = 0;
+ pe_def_file->exports[i].name = tmp;
+ }
+ }
+ }
+
+ if (pe_dll_stdcall_aliases)
+ {
+ for (i = 0; i < NE; i++)
+ {
+ if (strchr (pe_def_file->exports[i].name, '@'))
+ {
+ char *tmp = xstrdup (pe_def_file->exports[i].name);
+ *(strchr (tmp, '@')) = 0;
+ if (auto_export (pe_def_file, tmp))
+ def_file_add_export (pe_def_file, tmp,
+ pe_def_file->exports[i].internal_name, -1);
+ else
+ free (tmp);
+ }
+ }
+ }
+
+ e = pe_def_file->exports; /* convenience, but watch out for it changing */
+
+ exported_symbol_offsets = (bfd_vma *) xmalloc (NE * sizeof (bfd_vma));
+ exported_symbol_sections = (struct sec **) xmalloc (NE * sizeof (struct sec *));
+
+ memset (exported_symbol_sections, 0, NE * sizeof (struct sec *));
+ 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);
+ for (i = 0, j = 0; i < NE; i++)
+ {
+ if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
+ {
+ /* This is a duplicate */
+ if (e[j - 1].ordinal != -1
+ && e[i].ordinal != -1
+ && e[j - 1].ordinal != e[i].ordinal)
+ {
+ /* xgettext:c-format */
+ einfo (_("%XError, duplicate EXPORT with oridinals: %s (%d vs %d)\n"),
+ e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
+ }
+ else
+ {
+ /* xgettext:c-format */
+ einfo (_("Warning, duplicate EXPORT: %s\n"),
+ e[j - 1].name);
+ }
+ if (e[i].ordinal)
+ e[j - 1].ordinal = e[i].ordinal;
+ e[j - 1].flag_private |= e[i].flag_private;
+ e[j - 1].flag_constant |= e[i].flag_constant;
+ e[j - 1].flag_noname |= e[i].flag_noname;
+ e[j - 1].flag_data |= e[i].flag_data;
+ }
+ else
+ {
+ if (i != j)
+ e[j] = e[i];
+ j++;
+ }
+ }
+ pe_def_file->num_exports = j; /* == NE */
+
+ for (i = 0; i < NE; i++)
+ {
+ char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
+ *name = '_';
+ strcpy (name + 1, pe_def_file->exports[i].internal_name);
+
+ blhe = bfd_link_hash_lookup (info->hash,
+ name,
+ false, false, true);
+
+ if (blhe && (blhe->type == bfd_link_hash_defined))
+ {
+ count_exported++;
+ if (!pe_def_file->exports[i].flag_noname)
+ count_exported_byname++;
+ exported_symbol_offsets[i] = blhe->u.def.value;
+ exported_symbol_sections[i] = blhe->u.def.section;
+ if (pe_def_file->exports[i].ordinal != -1)
+ {
+ if (max_ordinal < pe_def_file->exports[i].ordinal)
+ max_ordinal = pe_def_file->exports[i].ordinal;
+ if (min_ordinal > pe_def_file->exports[i].ordinal)
+ min_ordinal = pe_def_file->exports[i].ordinal;
+ count_with_ordinals++;
+ }
+ }
+ else if (blhe && blhe->type == bfd_link_hash_undefined)
+ {
+ /* xgettext:c-format */
+ einfo (_("%XCannot export %s: symbol not defined\n"),
+ pe_def_file->exports[i].internal_name);
+ }
+ else if (blhe)
+ {
+ /* xgettext:c-format */
+ einfo (_("%XCannot export %s: symbol wrong type (%d vs %d)\n"),
+ pe_def_file->exports[i].internal_name,
+ blhe->type, bfd_link_hash_defined);
+ }
+ else
+ {
+ /* xgettext:c-format */
+ einfo (_("%XCannot export %s: symbol not found\n"),
+ pe_def_file->exports[i].internal_name);
+ }
+ free (name);
+ }
+}
+
+/************************************************************************
+
+ Build the bfd that will contain .edata and .reloc sections
+
+ ************************************************************************/
+
+static void
+build_filler_bfd ()
+{
+ lang_input_statement_type *filler_file;
+ filler_file = lang_add_input_file ("dll stuff",
+ lang_input_file_is_fake_enum,
+ NULL);
+ filler_file->the_bfd = filler_bfd = bfd_create ("dll stuff", output_bfd);
+ if (filler_bfd == NULL
+ || !bfd_set_arch_mach (filler_bfd,
+ bfd_get_arch (output_bfd),
+ bfd_get_mach (output_bfd)))
+ {
+ einfo ("%X%P: can not create BFD %E\n");
+ return;
+ }
+
+ edata_s = bfd_make_section_old_way (filler_bfd, ".edata");
+ if (edata_s == NULL
+ || !bfd_set_section_flags (filler_bfd, edata_s,
+ (SEC_HAS_CONTENTS
+ | SEC_ALLOC
+ | SEC_LOAD
+ | SEC_KEEP
+ | SEC_IN_MEMORY)))
+ {
+ einfo ("%X%P: can not create .edata section: %E\n");
+ return;
+ }
+ bfd_set_section_size (filler_bfd, edata_s, edata_sz);
+
+ reloc_s = bfd_make_section_old_way (filler_bfd, ".reloc");
+ if (reloc_s == NULL
+ || !bfd_set_section_flags (filler_bfd, reloc_s,
+ (SEC_HAS_CONTENTS
+ | SEC_ALLOC
+ | SEC_LOAD
+ | SEC_KEEP
+ | SEC_IN_MEMORY)))
+ {
+ 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
+
+ ************************************************************************/
+
+static void
+generate_edata (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ int i, next_ordinal;
+ int name_table_size = 0;
+ const char *dlnp;
+
+ /* 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;
+ }
+ else
+ {
+ dll_name = abfd->filename;
+ for (dlnp = dll_name; *dlnp; dlnp++)
+ {
+ if (*dlnp == '\\' || *dlnp == '/' || *dlnp == ':')
+ dll_name = dlnp + 1;
+ }
+ }
+
+ if (count_with_ordinals && max_ordinal > count_exported)
+ {
+ if (min_ordinal > max_ordinal - count_exported + 1)
+ min_ordinal = max_ordinal - count_exported + 1;
+ }
+ else
+ {
+ min_ordinal = 1;
+ max_ordinal = count_exported;
+ }
+ export_table_size = max_ordinal - min_ordinal + 1;
+
+ exported_symbols = (int *) xmalloc (export_table_size * sizeof (int));
+ for (i = 0; i < export_table_size; i++)
+ exported_symbols[i] = -1;
+
+ /* Now we need to assign ordinals to those that don't have them */
+ for (i = 0; i < NE; i++)
+ {
+ if (exported_symbol_sections[i])
+ {
+ if (pe_def_file->exports[i].ordinal != -1)
+ {
+ int ei = pe_def_file->exports[i].ordinal - min_ordinal;
+ int pi = exported_symbols[ei];
+ if (pi != -1)
+ {
+ /* xgettext:c-format */
+ einfo (_("%XError, oridinal used twice: %d (%s vs %s)\n"),
+ pe_def_file->exports[i].ordinal,
+ pe_def_file->exports[i].name,
+ pe_def_file->exports[pi].name);
+ }
+ exported_symbols[ei] = i;
+ }
+ name_table_size += strlen (pe_def_file->exports[i].name) + 1;
+ }
+ }
+
+ next_ordinal = min_ordinal;
+ for (i = 0; i < NE; i++)
+ if (exported_symbol_sections[i])
+ if (pe_def_file->exports[i].ordinal == -1)
+ {
+ 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 */
+ + 4 * count_exported_byname /* name ptrs */
+ + 2 * count_exported_byname /* ordinals */
+ + name_table_size + strlen (dll_name) + 1);
+}
+
+static void
+fill_edata (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ int i, hint;
+ unsigned char *edirectory;
+ unsigned long *eaddresses;
+ unsigned long *enameptrs;
+ unsigned short *eordinals;
+ unsigned char *enamestr;
+ time_t now;
+
+ time (&now);
+
+ edata_d = (unsigned char *) 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);
+
+#define ERVA(ptr) (((unsigned char *)(ptr) - edata_d) + edata_s->output_section->vma - image_base)
+
+ memset (edata_d, 0, 40);
+ bfd_put_32 (abfd, now, edata_d + 4);
+ if (pe_def_file->version_major != -1)
+ {
+ 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;
+ bfd_put_32 (abfd, min_ordinal, edata_d + 16);
+ bfd_put_32 (abfd, export_table_size, edata_d + 20);
+ bfd_put_32 (abfd, count_exported_byname, edata_d + 24);
+ bfd_put_32 (abfd, ERVA (eaddresses), edata_d + 28);
+ bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32);
+ bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36);
+
+ /* Ok, now for the filling in part */
+ hint = 0;
+ for (i = 0; i < export_table_size; i++)
+ {
+ int s = exported_symbols[i];
+ if (s != -1)
+ {
+ struct sec *ssec = exported_symbol_sections[s];
+ unsigned long srva = (exported_symbol_offsets[s]
+ + ssec->output_section->vma
+ + ssec->output_offset);
+
+ bfd_put_32 (abfd, srva - image_base, (void *) (eaddresses + i));
+ if (!pe_def_file->exports[s].flag_noname)
+ {
+ char *ename = pe_def_file->exports[s].name;
+ bfd_put_32 (abfd, ERVA (enamestr), (void *) enameptrs);
+ strcpy (enamestr, ename);
+ enamestr += strlen (enamestr) + 1;
+ bfd_put_16 (abfd, i, (void *) eordinals);
+ enameptrs++;
+ pe_def_file->exports[s].hint = hint++;
+ }
+ eordinals++;
+ }
+ }
+}
+
+/************************************************************************
+
+ Gather all the relocations and build the .reloc section
+
+ ************************************************************************/
+
+static void
+generate_reloc (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+
+ /* for .reloc stuff */
+ bfd_vma *reloc_addresses;
+ int total_relocs = 0;
+ int i;
+ unsigned long sec_page = (unsigned long) (-1);
+ unsigned long page_ptr, page_count;
+ int bi;
+ bfd *b;
+ struct sec *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_addresses = (bfd_vma *) xmalloc (total_relocs * sizeof (bfd_vma));
+
+ total_relocs = 0;
+ bi = 0;
+ for (bi = 0, b = info->input_bfds; b; bi++, b = b->link_next)
+ {
+ arelent **relocs;
+ int relsize, nrelocs, i;
+
+ for (s = b->sections; s; s = s->next)
+ {
+ unsigned long sec_vma = s->output_section->vma + s->output_offset;
+ asymbol **symbols;
+ int nsyms, symsize;
+
+ /* if it's not loaded, we don't need to relocate it this way */
+ if (!(s->output_section->flags & SEC_LOAD))
+ continue;
+
+ /* I don't know why there would be a reloc for these, but I've
+ seen it happen - DJ */
+ if (s->output_section == &bfd_abs_section)
+ continue;
+
+ if (s->output_section->vma == 0)
+ {
+ /* Huh? Shouldn't happen, but punt if it does */
+ einfo ("DJ: zero vma section reloc detected: `%s' #%d f=%d\n",
+ s->output_section->name, s->output_section->index,
+ s->output_section->flags);
+ continue;
+ }
+
+ symsize = bfd_get_symtab_upper_bound (b);
+ symbols = (asymbol **) xmalloc (symsize);
+ nsyms = bfd_canonicalize_symtab (b, symbols);
+
+ relsize = bfd_get_reloc_upper_bound (b, s);
+ relocs = (arelent **) xmalloc ((size_t) relsize);
+ nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols);
+
+ for (i = 0; i < nrelocs; i++)
+ {
+ if (!relocs[i]->howto->pc_relative
+ && relocs[i]->howto->type != R_IMAGEBASE)
+ {
+ switch (relocs[i]->howto->bitsize)
+ {
+ case 32:
+ reloc_addresses[total_relocs++] = sec_vma + relocs[i]->address;
+ break;
+ default:
+ /* xgettext:c-format */
+ einfo (_("%XError: %d-bit reloc in dll\n"),
+ relocs[i]->howto->bitsize);
+ break;
+ }
+ }
+ }
+ free (relocs);
+ /* Warning: the allocated symbols are remembered in BFD and reused
+ later, so don't free them! */
+ /* free (symbols); */
+ }
+ }
+
+ /* 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_addresses, total_relocs, sizeof (bfd_vma), reloc_sort);
+
+ for (i = 0; i < total_relocs; i++)
+ {
+ unsigned long this_page = (reloc_addresses[i] >> 12);
+ if (this_page != sec_page)
+ {
+ reloc_sz = (reloc_sz + 3) & ~3; /* 4-byte align */
+ reloc_sz += 8;
+ sec_page = this_page;
+ }
+ 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 = 0;
+ page_ptr = (unsigned long) (-1);
+ page_count = 0;
+ for (i = 0; i < total_relocs; i++)
+ {
+ unsigned long rva = reloc_addresses[i] - 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))
+ 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) + 0x3000, reloc_d + reloc_sz);
+ reloc_sz += 2;
+ page_count++;
+ }
+ while (reloc_sz & 3)
+ reloc_d[reloc_sz++] = 0;
+ 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)
+ reloc_d[reloc_sz++] = 0;
+}
+
+/************************************************************************
+
+ 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;
+{
+ char *cp;
+ for (cp = s; *cp; cp++)
+ if (*cp == '\''
+ || *cp == '"'
+ || *cp == '\\'
+ || isspace ((unsigned char) *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
+ fputs (s, f);
+}
+
+void
+pe_dll_generate_def_file (pe_out_def_filename)
+ 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);
+ }
+
+ if (pe_def_file)
+ {
+ if (pe_def_file->name)
+ {
+ if (pe_def_file->is_dll)
+ 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);
+ fprintf (out, "\n");
+ }
+
+ if (pe_def_file->description)
+ {
+ fprintf (out, "DESCRIPTION ");
+ quoteput (pe_def_file->description, out, 1);
+ fprintf (out, "\n");
+ }
+
+ if (pe_def_file->version_minor != -1)
+ fprintf (out, "VERSION %d.%d\n", pe_def_file->version_major,
+ pe_def_file->version_minor);
+ else if (pe_def_file->version_major != -1)
+ fprintf (out, "VERSION %d\n", pe_def_file->version_major);
+
+ if (pe_def_file->stack_reserve != -1 || pe_def_file->heap_reserve != -1)
+ fprintf (out, "\n");
+
+ if (pe_def_file->stack_commit != -1)
+ fprintf (out, "STACKSIZE 0x%x,0x%x\n",
+ 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);
+ else if (pe_def_file->heap_reserve != -1)
+ fprintf (out, "HEAPSIZE 0x%x\n", pe_def_file->heap_reserve);
+
+ 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");
+ 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");
+
+ fprintf (out, "\n");
+ }
+ }
+
+ 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");
+ }
+ }
+ }
+ else
+ fprintf (out, _("; no contents available\n"));
+
+ if (fclose (out) == EOF)
+ {
+ /* xgettext:c-format */
+ einfo (_("%P: Error closing file `%s'\n"), pe_out_def_filename);
+ }
+}
+
+/************************************************************************
+
+ Generate the import library
+
+ ************************************************************************/
+
+static asymbol **symtab;
+static int symptr;
+static int tmp_seq;
+static const char *dll_filename;
+static char *dll_symname;
+
+#define UNDSEC (asection *) &bfd_und_section
+
+static asection *
+quick_section(abfd, name, flags, align)
+ bfd *abfd;
+ const char *name;
+ int flags;
+ int align;
+{
+ asection *sec;
+ asymbol *sym;
+
+ sec = bfd_make_section_old_way (abfd, name);
+ bfd_set_section_flags (abfd, sec, flags
+ | SEC_ALLOC
+ | SEC_LOAD
+ | SEC_KEEP
+ );
+ bfd_set_section_alignment (abfd, sec, align);
+ /* remember to undo this before trying to link internally! */
+ sec->output_section = sec;
+
+ sym = bfd_make_empty_symbol (abfd);
+ symtab[symptr++] = sym;
+ sym->name = sec->name;
+ sym->section = sec;
+ sym->flags = BSF_LOCAL;
+ sym->value = 0;
+
+ return sec;
+}
+
+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;
+{
+ asymbol *sym;
+ char *name = (char *) xmalloc (strlen (n1) + strlen (n2) + strlen (n3) + 1);
+ strcpy (name, n1);
+ strcat (name, n2);
+ strcat (name, n3);
+ sym = bfd_make_empty_symbol (abfd);
+ sym->name = name;
+ sym->section = sec;
+ sym->flags = flags;
+ sym->value = addr;
+ symtab[symptr++] = sym;
+}
+
+static arelent *reltab = 0;
+static int relcount = 0, relsize = 0;
+
+static void
+quick_reloc (abfd, address, which_howto, symidx)
+ bfd *abfd;
+ int address;
+ int which_howto;
+ int symidx;
+{
+ if (relcount >= (relsize-1))
+ {
+ relsize += 10;
+ if (reltab)
+ reltab = (arelent *) xrealloc (reltab, relsize * sizeof (arelent));
+ else
+ reltab = (arelent *) xmalloc (relsize * sizeof (arelent));
+ }
+ reltab[relcount].address = address;
+ reltab[relcount].addend = 0;
+ reltab[relcount].howto = bfd_reloc_type_lookup (abfd, which_howto);
+ reltab[relcount].sym_ptr_ptr = symtab + symidx;
+ relcount++;
+}
+
+static void
+save_relocs (asection *sec)
+{
+ int i;
+ sec->relocation = reltab;
+ sec->reloc_count = relcount;
+ sec->orelocation = (arelent **) xmalloc ((relcount+1) * sizeof (arelent *));
+ for (i=0; i<relcount; i++)
+ sec->orelocation[i] = sec->relocation + i;
+ sec->orelocation[relcount] = 0;
+ sec->flags |= SEC_RELOC;
+ reltab = 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:
+ */
+
+static bfd *
+make_head (parent)
+ bfd *parent;
+{
+ asection *id2, *id5, *id4;
+ unsigned char *d2, *d5, *d4;
+ char *oname;
+ bfd *abfd;
+
+ oname = (char *) xmalloc (20);
+ sprintf (oname, "d%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target ("pe-i386", abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
+
+ symptr = 0;
+ symtab = (asymbol **) 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);
+ quick_symbol (abfd, "__head_", dll_symname, "", id2, BSF_GLOBAL, 0);
+ quick_symbol (abfd, "_", dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, id2, 20);
+ d2 = (unsigned char *) xmalloc (20);
+ id2->contents = d2;
+ memset (d2, 0, 20);
+ 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);
+ id5->contents = d5;
+ memset (d5, 0, 4);
+
+ bfd_set_section_size (abfd, id4, 4);
+ d4 = (unsigned char *) xmalloc (4);
+ id4->contents = d4;
+ memset (d4, 0, 4);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, id2, d2, 0, 20);
+ bfd_set_section_contents (abfd, id5, d5, 0, 4);
+ bfd_set_section_contents (abfd, id4, d4, 0, 4);
+
+ bfd_make_readable (abfd);
+ 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"
+ */
+
+static bfd *
+make_tail (parent)
+ bfd *parent;
+{
+ asection *id4, *id5, *id7;
+ unsigned char *d4, *d5, *d7;
+ int len;
+ char *oname;
+ bfd *abfd;
+
+ oname = (char *) xmalloc (20);
+ sprintf (oname, "d%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target ("pe-i386", abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
+
+ symptr = 0;
+ symtab = (asymbol **) 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, "_", dll_symname, "_iname", id7, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, id4, 4);
+ d4 = (unsigned char *) xmalloc (4);
+ id4->contents = d4;
+ memset (d4, 0, 4);
+
+ bfd_set_section_size (abfd, id5, 4);
+ d5 = (unsigned char *) xmalloc (4);
+ id5->contents = d5;
+ memset (d5, 0, 4);
+
+ len = strlen (dll_filename)+1;
+ if (len & 1)
+ len ++;
+ bfd_set_section_size (abfd, id7, len);
+ d7 = (unsigned char *) xmalloc (len);
+ id7->contents = d7;
+ strcpy (d7, dll_filename);
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, id4, d4, 0, 4);
+ bfd_set_section_contents (abfd, id5, d5, 0, 4);
+ bfd_set_section_contents (abfd, id7, d7, 0, len);
+
+ bfd_make_readable (abfd);
+ 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[] = {
+ 0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
+};
+
+
+static bfd *
+make_one (exp, parent)
+ def_file_export *exp;
+ bfd *parent;
+{
+ asection *tx, *id7, *id5, *id4, *id6;
+ unsigned char *td, *d7, *d5, *d4, *d6;
+ int len;
+ char *oname;
+ bfd *abfd;
+
+ oname = (char *) xmalloc (20);
+ sprintf (oname, "d%06d.o", tmp_seq);
+ tmp_seq++;
+
+ abfd = bfd_create (oname, parent);
+ bfd_find_target ("pe-i386", abfd);
+ bfd_make_writable (abfd);
+
+ bfd_set_format (abfd, bfd_object);
+ bfd_set_arch_mach (abfd, bfd_arch_i386, 0);
+
+ symptr = 0;
+ symtab = (asymbol **) xmalloc (10 * 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);
+ quick_symbol (abfd, "_", exp->internal_name, "", tx, BSF_GLOBAL, 0);
+ quick_symbol (abfd, "__head_", dll_symname, "", UNDSEC, BSF_GLOBAL, 0);
+ quick_symbol (abfd, "___imp_", exp->internal_name, "", id5, BSF_GLOBAL, 0);
+ quick_symbol (abfd, "__imp__", exp->internal_name, "", id5, BSF_GLOBAL, 0);
+
+ bfd_set_section_size (abfd, tx, 8);
+ td = (unsigned char *) xmalloc (8);
+ tx->contents = td;
+ memcpy (td, jmp_ix86_bytes, 8);
+ quick_reloc (abfd, 2, BFD_RELOC_32, 2);
+ save_relocs (tx);
+
+ bfd_set_section_size (abfd, id7, 4);
+ d7 = (unsigned char *) xmalloc (4);
+ id7->contents = d7;
+ memset (d7, 0, 4);
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 6);
+ save_relocs (id7);
+
+ bfd_set_section_size (abfd, id5, 4);
+ d5 = (unsigned char *) xmalloc (4);
+ id5->contents = d5;
+ memset (d5, 0, 4);
+ if (exp->flag_noname)
+ {
+ d5[0] = exp->ordinal;
+ d5[1] = exp->ordinal >> 8;
+ d5[3] = 0x80;
+ }
+ else
+ {
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
+ save_relocs (id5);
+ }
+
+ bfd_set_section_size (abfd, id4, 4);
+ d4 = (unsigned char *) xmalloc (4);
+ id4->contents = d4;
+ memset (d4, 0, 4);
+ if (exp->flag_noname)
+ {
+ d5[0] = exp->ordinal;
+ d5[1] = exp->ordinal >> 8;
+ d5[3] = 0x80;
+ }
+ else
+ {
+ quick_reloc (abfd, 0, BFD_RELOC_RVA, 4);
+ save_relocs (id4);
+ }
+
+ if (exp->flag_noname)
+ {
+ len = 0;
+ bfd_set_section_size (abfd, id6, 0);
+ }
+ else
+ {
+ len = strlen (exp->name) + 3;
+ if (len & 1)
+ len++;
+ bfd_set_section_size (abfd, id6, len);
+ d6 = (unsigned char *) xmalloc (len);
+ id6->contents = d6;
+ memset (d6, 0, len);
+ d6[0] = exp->hint & 0xff;
+ d6[1] = exp->hint >> 8;
+ strcpy (d6+2, exp->name);
+ }
+
+ bfd_set_symtab (abfd, symtab, symptr);
+
+ bfd_set_section_contents (abfd, tx, td, 0, 4);
+ bfd_set_section_contents (abfd, id7, d7, 0, 4);
+ bfd_set_section_contents (abfd, id5, d5, 0, 4);
+ bfd_set_section_contents (abfd, id4, d4, 0, 4);
+ if (!exp->flag_noname)
+ bfd_set_section_contents (abfd, id6, d6, 0, len);
+
+ bfd_make_readable (abfd);
+ return abfd;
+}
+
+void
+pe_dll_generate_implib (def, impfilename)
+ def_file *def;
+ char *impfilename;
+{
+ int i;
+ bfd *ar_head;
+ bfd *ar_tail;
+ bfd *outarch;
+ bfd *head = 0;
+
+ dll_filename = def->name;
+ if (dll_filename == 0)
+ {
+ dll_filename = dll_name;
+ for (i=0; impfilename[i]; i++)
+ if (impfilename[i] == '/' || impfilename[i] == '\\')
+ dll_filename = impfilename+1;
+ }
+ dll_symname = xstrdup (dll_filename);
+ for (i=0; dll_symname[i]; i++)
+ if (!isalnum ((unsigned char) dll_symname[i]))
+ dll_symname[i] = '_';
+
+ unlink (impfilename);
+
+ outarch = bfd_openw (impfilename, 0);
+
+ if (!outarch)
+ {
+ /* xgettext:c-format */
+ einfo (_("%XCan't open .lib file: %s\n"), impfilename);
+ return;
+ }
+
+ /* xgettext:c-format */
+ einfo (_("Creating library file: %s\n"), impfilename);
+
+ bfd_set_format (outarch, bfd_archive);
+ outarch->has_armap = 1;
+
+ /* Work out a reasonable size of things to put onto one line. */
+
+ ar_head = make_head (outarch);
+ ar_tail = make_tail (outarch);
+
+ if (ar_head == NULL || ar_tail == NULL)
+ return;
+
+ 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;
+ def->exports[i].internal_name = def->exports[i].name;
+ n = make_one (def->exports+i, outarch);
+ n->next = head;
+ head = n;
+ def->exports[i].internal_name = internal;
+ }
+
+ /* Now stick them all into the archive */
+
+ ar_head->next = head;
+ ar_tail->next = ar_head;
+ head = ar_tail;
+
+ if (! bfd_set_archive_head (outarch, head))
+ einfo ("%Xbfd_set_archive_head: %s\n", bfd_errmsg (bfd_get_error ()));
+
+ if (! bfd_close (outarch))
+ einfo ("%Xbfd_close %s: %s\n", impfilename, bfd_errmsg (bfd_get_error ()));
+
+ while (head != NULL)
+ {
+ bfd *n = head->next;
+ bfd_close (head);
+ head = n;
+ }
+}
+
+static void
+add_bfd_to_link (abfd, name, link_info)
+ bfd *abfd;
+ 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;
+{
+ def_file_module *module;
+
+ if (!pe_def_file)
+ return;
+
+ for (module = pe_def_file->modules; module; module = module->next)
+ {
+ int i, do_this_dll;
+
+ dll_filename = module->name;
+ dll_symname = xstrdup (module->name);
+ for (i=0; dll_symname[i]; i++)
+ if (!isalnum (dll_symname[i]))
+ dll_symname[i] = '_';
+
+ do_this_dll = 0;
+
+ for (i=0; i<pe_def_file->num_imports; i++)
+ if (pe_def_file->imports[i].module == module)
+ {
+ def_file_export exp;
+ struct bfd_link_hash_entry *blhe;
+
+ /* see if we need this import */
+ char *name = (char *) xmalloc (strlen (pe_def_file->imports[i].internal_name) + 2);
+ sprintf (name, "_%s", pe_def_file->imports[i].internal_name);
+ blhe = bfd_link_hash_lookup (link_info->hash, name,
+ false, false, false);
+ free (name);
+ if (blhe && blhe->type == bfd_link_hash_undefined)
+ {
+ bfd *one;
+ /* we do */
+ if (!do_this_dll)
+ {
+ bfd *ar_head = make_head (output_bfd);
+ add_bfd_to_link (ar_head, ar_head->filename, link_info);
+ do_this_dll = 1;
+ }
+ exp.internal_name = pe_def_file->imports[i].internal_name;
+ exp.name = pe_def_file->imports[i].name;
+ exp.ordinal = pe_def_file->imports[i].ordinal;
+ exp.hint = exp.ordinal >= 0 ? exp.ordinal : 0;
+ exp.flag_private = 0;
+ exp.flag_constant = 0;
+ exp.flag_data = 0;
+ exp.flag_noname = exp.name ? 0 : 1;
+ one = make_one (&exp, output_bfd);
+ add_bfd_to_link (one, one->filename, link_info);
+ }
+ }
+ if (do_this_dll)
+ {
+ bfd *ar_tail = make_tail (output_bfd);
+ add_bfd_to_link (ar_tail, ar_tail->filename, link_info);
+ }
+
+ free (dll_symname);
+ }
+}
+
+/************************************************************************
+
+ 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;
+{
+ unsigned char b[2];
+ bfd_seek (abfd, where, SEEK_SET);
+ bfd_read (b, 1, 2, abfd);
+ return b[0] + (b[1]<<8);
+}
+
+static unsigned int
+pe_get32 (abfd, where)
+ bfd *abfd;
+ int where;
+{
+ unsigned char b[4];
+ bfd_seek (abfd, where, SEEK_SET);
+ bfd_read (b, 1, 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;
+{
+ 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)
+ 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 name_rvas, ordinals, nexp, ordbase;
+ char *dll_name;
+
+ /* No, I can't use bfd here. kernel32.dll puts its export table in
+ the middle of the .rdata section. */
+
+ dll = bfd_openr (filename, "pei-i386");
+ if (!dll)
+ {
+ einfo ("%Xopen %s: %s\n", filename, bfd_errmsg (bfd_get_error ()));
+ 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;
+ }
+
+ dll_name = filename;
+ for (i=0; filename[i]; i++)
+ if (filename[i] == '/' || filename[i] == '\\' || filename[i] == ':')
+ dll_name = filename + i + 1;
+
+ 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;
+ 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;
+ for (i=0; i<nsections; i++)
+ {
+ char sname[8];
+ unsigned long secptr1 = secptr + 40 * i;
+ 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);
+ if (vaddr <= export_rva && vaddr+vsize > export_rva)
+ {
+ expptr = fptr + (export_rva - vaddr);
+ if (export_rva + export_size > vaddr + vsize)
+ export_size = vsize - (export_rva - vaddr);
+ break;
+ }
+ }
+
+ expdata = (unsigned char *) xmalloc (export_size);
+ bfd_seek (dll, expptr, SEEK_SET);
+ bfd_read (expdata, 1, export_size, dll);
+ erva = expdata - export_rva;
+
+ if (pe_def_file == 0)
+ pe_def_file = def_file_empty();
+
+ nexp = pe_as32 (expdata+24);
+ name_rvas = pe_as32 (expdata+32);
+ ordinals = pe_as32 (expdata+36);
+ ordbase = pe_as32 (expdata+16);
+ for (i=0; i<nexp; i++)
+ {
+ 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);
+ }
+
+ 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.
+
+ ************************************************************************/
+
+void
+pe_dll_build_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ process_def_file (abfd, info);
+
+ generate_edata (abfd, info);
+ build_filler_bfd ();
+}
+
+void
+pe_dll_fill_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ image_base = pe_data (abfd)->pe_opthdr.ImageBase;
+
+ generate_reloc (abfd, info);
+ if (reloc_sz > 0)
+ {
+ bfd_set_section_size (filler_bfd, reloc_s, reloc_sz);
+
+ /* Resize the sections. */
+ lang_size_sections (stat_ptr->head, abs_output_section,
+ &stat_ptr->head, 0, (bfd_vma) 0, false);
+
+ /* 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);
+ }
+
+ fill_edata (abfd, info);
+
+ pe_data (abfd)->dll = 1;
+
+ edata_s->contents = edata_d;
+ reloc_s->contents = reloc_d;
+}