| /* Routines to help build PEI-format DLLs (Win32 etc) |
| Copyright 1998, 1999, 2000, 2001, 2002 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 "safe-ctype.h" |
| |
| #include <time.h> |
| |
| #include "ld.h" |
| #include "ldexp.h" |
| #include "ldlang.h" |
| #include "ldwrite.h" |
| #include "ldmisc.h" |
| #include <ldgram.h> |
| #include "ldmain.h" |
| #include "ldfile.h" |
| #include "ldemul.h" |
| #include "coff/internal.h" |
| #include "../bfd/libcoff.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. */ |
| |
| /* 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 practise 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 someting 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 parellel 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 practise, |
| 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, prohibitting 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 PARAMS ((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 bfd_vma image_base; |
| static bfd *filler_bfd; |
| static struct sec *edata_s, *reloc_s; |
| static unsigned char *edata_d, *reloc_d; |
| static size_t edata_sz, reloc_sz; |
| |
| 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[] = |
| { |
| { |
| "pei-i386", |
| "pe-i386", |
| 7 /* R_IMAGEBASE */, |
| PE_ARCH_i386, |
| bfd_arch_i386, |
| 1 |
| }, |
| { |
| "pei-shl", |
| "pe-shl", |
| 16 /* R_SH_IMAGEBASE */, |
| PE_ARCH_sh, |
| bfd_arch_sh, |
| 1 |
| }, |
| { |
| "pei-mips", |
| "pe-mips", |
| 34 /* MIPS_R_RVA */, |
| PE_ARCH_mips, |
| bfd_arch_mips, |
| 0 |
| }, |
| { |
| "pei-arm-little", |
| "pe-arm-little", |
| 11 /* ARM_RVA32 */, |
| PE_ARCH_arm, |
| bfd_arch_arm, |
| 0 |
| }, |
| { |
| "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 }, |
| { NULL, 0 } |
| }; |
| |
| /* Do not specify library suffix explicitly, to allow for dllized versions. */ |
| static autofilter_entry_type autofilter_liblist[] = |
| { |
| { "libgcc.", 7 }, |
| { "libstdc++.", 10 }, |
| { "libmingw32.", 11 }, |
| { "libg2c.", 7 }, |
| { "libsupc++.", 10 }, |
| { "libobjc.", 8 }, |
| { 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) |
| |
| static int reloc_sort PARAMS ((const void *, const void *)); |
| static int pe_export_sort PARAMS ((const void *, const void *)); |
| static int auto_export PARAMS ((bfd *, def_file *, const char *)); |
| static void process_def_file PARAMS ((bfd *, struct bfd_link_info *)); |
| static void build_filler_bfd PARAMS ((int)); |
| static void generate_edata PARAMS ((bfd *, struct bfd_link_info *)); |
| static void fill_exported_offsets PARAMS ((bfd *, struct bfd_link_info *)); |
| static void fill_edata PARAMS ((bfd *, struct bfd_link_info *)); |
| static void generate_reloc PARAMS ((bfd *, struct bfd_link_info *)); |
| static void quoteput PARAMS ((char *, FILE *, int)); |
| static asection *quick_section PARAMS ((bfd *, const char *, int, int)); |
| static void quick_symbol |
| PARAMS ((bfd *, const char *, const char *, const char *, |
| asection *, int, int)); |
| static void quick_reloc PARAMS ((bfd *, int, int, int)); |
| static bfd *make_head PARAMS ((bfd *)); |
| static bfd *make_tail PARAMS ((bfd *)); |
| static bfd *make_one PARAMS ((def_file_export *, bfd *)); |
| static bfd *make_singleton_name_thunk PARAMS ((const char *, bfd *)); |
| static char *make_import_fixup_mark PARAMS ((arelent *)); |
| static bfd *make_import_fixup_entry |
| PARAMS ((const char *, const char *, const char *, bfd *)); |
| static unsigned int pe_get16 PARAMS ((bfd *, int)); |
| static unsigned int pe_get32 PARAMS ((bfd *, int)); |
| static unsigned int pe_as32 PARAMS ((void *)); |
| |
| void |
| pe_dll_id_target (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) |
| { |
| pe_details = pe_detail_list + i; |
| return; |
| } |
| einfo (_("%XUnsupported PEI architecture: %s\n"), target); |
| exit (1); |
| } |
| |
| /* 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; |
| |
| static int |
| reloc_sort (va, vb) |
| const void *va, *vb; |
| { |
| bfd_vma a = ((reloc_data_type *) va)->vma; |
| bfd_vma b = ((reloc_data_type *) vb)->vma; |
| |
| return (a > b) ? 1 : ((a < b) ? -1 : 0); |
| } |
| |
| 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; |
| int type; |
| } |
| exclude_list_struct; |
| |
| static struct exclude_list_struct *excludes = 0; |
| |
| void |
| pe_dll_add_excludes (new_excludes, type) |
| const char *new_excludes; |
| const int type; |
| { |
| 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->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 (abfd, d, n) |
| 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__", 6) == 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) |
| { |
| 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 (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; |
| { |
| 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++) |
| { |
| /* We should export symbols which are either global or not |
| 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 = (char *) 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 (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); |
| } |
| } |
| } |
| } |
| } |
| |
| #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 (NULL, pe_def_file, tmp)) |
| def_file_add_export (pe_def_file, tmp, |
| 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 *)); |
| |
| 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) |
| { |
| if (pe_dll_warn_dup_exports) |
| /* xgettext:c-format */ |
| einfo (_("%XError, duplicate EXPORT with ordinals: %s (%d vs %d)\n"), |
| e[j - 1].name, e[j - 1].ordinal, e[i].ordinal); |
| } |
| else |
| { |
| if (pe_dll_warn_dup_exports) |
| /* xgettext:c-format */ |
| 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; |
| 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); |
| |
| if (pe_details->underscored) |
| { |
| *name = '_'; |
| strcpy (name + 1, pe_def_file->exports[i].internal_name); |
| } |
| else |
| strcpy (name, 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 |
| || (blhe->type == bfd_link_hash_common))) |
| { |
| count_exported++; |
| if (!pe_def_file->exports[i].flag_noname) |
| count_exported_byname++; |
| |
| /* Only fill in the sections. The actual offsets are computed |
| in fill_exported_offsets() after common symbols are laid |
| out. */ |
| if (blhe->type == bfd_link_hash_defined) |
| exported_symbol_sections[i] = blhe->u.def.section; |
| else |
| exported_symbol_sections[i] = blhe->u.c.p->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 (include_edata) |
| int include_edata; |
| { |
| 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; |
| } |
| |
| if (include_edata) |
| { |
| 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 ATTRIBUTE_UNUSED; |
| { |
| 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, ordinal 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); |
| } |
| |
| /* Fill the exported symbol offsets. The preliminary work has already |
| been done in process_def_file(). */ |
| |
| static void |
| fill_exported_offsets (abfd, info) |
| 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) |
| { |
| *name = '_'; |
| strcpy (name + 1, pe_def_file->exports[i].internal_name); |
| } |
| else |
| strcpy (name, 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)) |
| 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; |
| { |
| 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, edata_sz); |
| 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); |
| |
| fill_exported_offsets (abfd, info); |
| |
| /* 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); |
| int ord = pe_def_file->exports[s].ordinal; |
| |
| bfd_put_32 (abfd, srva - image_base, |
| (void *) (eaddresses + 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++; |
| strcpy (enamestr, ename); |
| enamestr += strlen (enamestr) + 1; |
| bfd_put_16 (abfd, ord - min_ordinal, (void *) eordinals); |
| eordinals++; |
| pe_def_file->exports[s].hint = hint++; |
| } |
| } |
| } |
| } |
| |
| |
| static struct sec *current_sec; |
| |
| void |
| pe_walk_relocs_of_symbol (info, name, cb) |
| 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 = (asymbol **) 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 = (arelent **) xmalloc ((size_t) relsize); |
| nrelocs = bfd_canonicalize_reloc (b, s, relocs, symbols); |
| |
| for (i = 0; i < nrelocs; i++) |
| { |
| struct symbol_cache_entry *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; |
| { |
| |
| /* For .reloc stuff. */ |
| reloc_data_type *reloc_data; |
| 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_data = |
| (reloc_data_type *) xmalloc (total_relocs * sizeof (reloc_data_type)); |
| |
| 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 (pe_dll_extra_pe_debug) |
| { |
| struct symbol_cache_entry *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; |
| |
| sym_vma = (relocs[i]->addend |
| + sym->value |
| + sym->section->vma |
| + sym->section->output_offset |
| + sym->section->output_section->vma); |
| reloc_data[total_relocs].vma = sec_vma + relocs[i]->address; |
| |
| #define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift) |
| |
| switch BITS_AND_SHIFT (relocs[i]->howto->bitsize, |
| relocs[i]->howto->rightshift) |
| { |
| case BITS_AND_SHIFT (32, 0): |
| reloc_data[total_relocs].type = 3; |
| total_relocs++; |
| break; |
| case BITS_AND_SHIFT (16, 0): |
| reloc_data[total_relocs].type = 2; |
| total_relocs++; |
| break; |
| case BITS_AND_SHIFT (16, 16): |
| reloc_data[total_relocs].type = 4; |
| /* FIXME: we can't know the symbol's right value |
| yet, but we probably can safely assume that |
| CE will relocate us in 64k blocks, so leaving |
| it zero is safe. */ |
| reloc_data[total_relocs].extra = 0; |
| total_relocs++; |
| break; |
| case BITS_AND_SHIFT (26, 2): |
| reloc_data[total_relocs].type = 5; |
| total_relocs++; |
| 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! */ |
| #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++) |
| { |
| unsigned long this_page = (reloc_data[i].vma >> 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; |
| |
| 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 = 0; |
| 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)) |
| 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)) |
| 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 (*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) |
| 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); |
| |
| 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, "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"); |
| |
| 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; |
| 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); |
| |
| 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_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 = (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, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); |
| quick_symbol (abfd, U (""), dll_symname, "_iname", UNDSEC, BSF_GLOBAL, 0); |
| |
| /* OK, pay attention here. I got confused myself looking back at |
| it. We create a four-byte section to mark the beginning of the |
| list, and we include an offset of 4 in the section, so that the |
| pointer to the list points to the *end* of this section, which is |
| the start of the list of sections from other objects. */ |
| |
| 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_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 = (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, U (""), 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 |
| }; |
| |
| /* _function: |
| mov.l ip+8,r0 |
| mov.l @r0,r0 |
| jmp @r0 |
| nop |
| .dw __imp_function */ |
| |
| 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 */ |
| |
| 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; |
| { |
| asection *tx, *id7, *id5, *id4, *id6; |
| unsigned char *td = NULL, *d7, *d5, *d4, *d6 = NULL; |
| int len; |
| char *oname; |
| bfd *abfd; |
| unsigned char *jmp_bytes = NULL; |
| int jmp_byte_count = 0; |
| |
| switch (pe_details->pe_arch) |
| { |
| case PE_ARCH_i386: |
| jmp_bytes = jmp_ix86_bytes; |
| jmp_byte_count = sizeof (jmp_ix86_bytes); |
| break; |
| case PE_ARCH_sh: |
| jmp_bytes = jmp_sh_bytes; |
| jmp_byte_count = sizeof (jmp_sh_bytes); |
| break; |
| case PE_ARCH_mips: |
| jmp_bytes = jmp_mips_bytes; |
| jmp_byte_count = sizeof (jmp_mips_bytes); |
| break; |
| default: |
| abort (); |
| } |
| |
| oname = (char *) xmalloc (20); |
| sprintf (oname, "d%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 = (asymbol **) 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); |
| /* 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); |
| |
| 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; |
| default: |
| abort (); |
| } |
| 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) |
| { |
| d4[0] = exp->ordinal; |
| d4[1] = exp->ordinal >> 8; |
| d4[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, jmp_byte_count); |
| 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; |
| } |
| |
| static bfd * |
| make_singleton_name_thunk (import, parent) |
| const char *import; |
| bfd *parent; |
| { |
| /* Name thunks go to idata$4. */ |
| asection *id4; |
| unsigned char *d4; |
| char *oname; |
| bfd *abfd; |
| |
| oname = (char *) 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 = (asymbol **) 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 = (unsigned char *) 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 (rel) |
| 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 symbol_cache_entry *sym = *rel->sym_ptr_ptr; |
| |
| bfd *abfd = bfd_asymbol_bfd (sym); |
| struct bfd_link_hash_entry *bh; |
| |
| if (!fixup_name) |
| { |
| fixup_name = (char *) 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 = (char *) 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 (name, fixup_name, dll_symname, parent) |
| const char *name; |
| const char *fixup_name; |
| const char *dll_symname; |
| bfd *parent; |
| { |
| asection *id3; |
| unsigned char *d3; |
| char *oname; |
| bfd *abfd; |
| |
| oname = (char *) 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 = (asymbol **) xmalloc (6 * sizeof (asymbol *)); |
| id3 = quick_section (abfd, ".idata$3", SEC_HAS_CONTENTS, 2); |
| |
| #if 0 |
| quick_symbol (abfd, U ("_head_"), dll_symname, "", id2, BSF_GLOBAL, 0); |
| #endif |
| 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 = (unsigned char *) 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; |
| } |
| |
| void |
| pe_create_import_fixup (rel) |
| arelent *rel; |
| { |
| char buf[300]; |
| struct symbol_cache_entry *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); |
| |
| 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; |
| } |
| |
| { |
| extern char * pe_data_import_dll; |
| char * dll_symname = pe_data_import_dll ? pe_data_import_dll : "unknown"; |
| |
| bfd *b = make_import_fixup_entry (name, fixup_name, dll_symname, |
| output_bfd); |
| add_bfd_to_link (b, b->filename, &link_info); |
| } |
| } |
| |
| |
| void |
| pe_dll_generate_implib (def, impfilename) |
| def_file *def; |
| const char *impfilename; |
| { |
| int i; |
| bfd *ar_head; |
| bfd *ar_tail; |
| bfd *outarch; |
| bfd *head = 0; |
| |
| dll_filename = (def->name) ? def->name : dll_name; |
| dll_symname = xstrdup (dll_filename); |
| for (i = 0; dll_symname[i]; i++) |
| if (!ISALNUM (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); |
| |
| 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; |
| } |
| |
| ar_tail = make_tail (outarch); |
| |
| if (ar_head == NULL || ar_tail == NULL) |
| return; |
| |
| /* 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; |
| 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; |
| { |
| def_file_module *module; |
| |
| pe_dll_id_target (bfd_get_target (output_bfd)); |
| |
| 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 + 6); |
| sprintf (name, "%s%s", U (""), pe_def_file->imports[i].internal_name); |
| blhe = bfd_link_hash_lookup (link_info->hash, name, |
| 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); |
| 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, (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; |
| { |
| unsigned char b[4]; |
| |
| 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; |
| { |
| 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 *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; |
| const 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, pe_details->target_name); |
| 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, (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); |
| if (export_rva + export_size > vaddr + vsize) |
| export_size = vsize - (export_rva - vaddr); |
| break; |
| } |
| } |
| |
| expdata = (unsigned char *) xmalloc (export_size); |
| bfd_seek (dll, (file_ptr) expptr, SEEK_SET); |
| bfd_bread (expdata, (bfd_size_type) 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; |
| { |
| pe_dll_id_target (bfd_get_target (abfd)); |
| process_def_file (abfd, info); |
| |
| 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_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_id_target (bfd_get_target (abfd)); |
| 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, NULL); |
| |
| /* 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; |
| } |
| |
| void |
| pe_exe_fill_sections (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| pe_dll_id_target (bfd_get_target (abfd)); |
| 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, NULL); |
| |
| /* 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); |
| } |
| reloc_s->contents = reloc_d; |
| } |