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Diffstat (limited to 'ld/emultempl/pe.em')
| -rw-r--r-- | ld/emultempl/pe.em | 1104 |
1 files changed, 1104 insertions, 0 deletions
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em new file mode 100644 index 0000000..46ebbe9 --- /dev/null +++ b/ld/emultempl/pe.em @@ -0,0 +1,1104 @@ +# This shell script emits a C file. -*- C -*- +# It does some substitutions. +cat >e${EMULATION_NAME}.c <<EOF +/* This file is part of GLD, the Gnu Linker. + Copyright 1995, 96, 97, 1998 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* For WINDOWS_NT */ +/* The original file generated returned different default scripts depending + on whether certain switches were set, but these switches pertain to the + Linux system and that particular version of coff. In the NT case, we + only determine if the subsystem is console or windows in order to select + the correct entry point by default. */ + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "getopt.h" +#include "libiberty.h" +#include "ld.h" +#include "ldmain.h" +#include "ldgram.h" +#include "ldexp.h" +#include "ldlang.h" +#include "ldemul.h" +#include "ldlex.h" +#include "ldmisc.h" +#include "ldctor.h" +#include "ldfile.h" +#include "coff/internal.h" +#include "../bfd/libcoff.h" +#include "deffile.h" + +#define TARGET_IS_${EMULATION_NAME} + +static void gld_${EMULATION_NAME}_set_symbols PARAMS ((void)); +static void gld_${EMULATION_NAME}_after_open PARAMS ((void)); +static void gld_${EMULATION_NAME}_before_parse PARAMS ((void)); +static void gld_${EMULATION_NAME}_after_parse PARAMS ((void)); +static void gld_${EMULATION_NAME}_before_allocation PARAMS ((void)); +static boolean gld_${EMULATION_NAME}_place_orphan + PARAMS ((lang_input_statement_type *, asection *)); +static void gld${EMULATION_NAME}_place_section + PARAMS ((lang_statement_union_type *)); +static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *)); +static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **)); + +static struct internal_extra_pe_aouthdr pe; +static int dll; +static int support_old_code = 0; +extern def_file *pe_def_file; +static lang_assignment_statement_type *image_base_statement = 0; + +static char *pe_out_def_filename = 0; +extern int pe_dll_export_everything; +extern int pe_dll_kill_ats; +extern int pe_dll_stdcall_aliases; +static int pe_enable_stdcall_fixup = -1; /* 0=disable 1=enable */ +static char *pe_implib_filename = 0; + +extern const char *output_filename; + +static void +gld_${EMULATION_NAME}_before_parse() +{ + output_filename = "a.exe"; + ldfile_output_architecture = bfd_arch_${ARCH}; +#ifdef TARGET_IS_i386pe + config.has_shared = 1; +#endif +} + +/* PE format extra command line options. */ + +/* Used for setting flags in the PE header. */ +#define OPTION_BASE_FILE (300 + 1) +#define OPTION_DLL (OPTION_BASE_FILE + 1) +#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1) +#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1) +#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1) +#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1) +#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1) +#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1) +#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1) +#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1) +#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1) +#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1) +#define OPTION_SUBSYSTEM (OPTION_STACK + 1) +#define OPTION_HEAP (OPTION_SUBSYSTEM + 1) +#define OPTION_SUPPORT_OLD_CODE (OPTION_HEAP + 1) +#define OPTION_OUT_DEF (OPTION_SUPPORT_OLD_CODE + 1) +#define OPTION_EXPORT_ALL (OPTION_OUT_DEF + 1) +#define OPTION_EXCLUDE_SYMBOLS (OPTION_EXPORT_ALL + 1) +#define OPTION_KILL_ATS (OPTION_EXCLUDE_SYMBOLS + 1) +#define OPTION_STDCALL_ALIASES (OPTION_KILL_ATS + 1) +#define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1) +#define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1) +#define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1) + +static struct option longopts[] = +{ + /* PE options */ + {"base-file", required_argument, NULL, OPTION_BASE_FILE}, + {"dll", no_argument, NULL, OPTION_DLL}, + {"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT}, + {"heap", required_argument, NULL, OPTION_HEAP}, + {"image-base", required_argument, NULL, OPTION_IMAGE_BASE}, + {"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION}, + {"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION}, + {"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION}, + {"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION}, + {"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION}, + {"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION}, + {"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT}, + {"stack", required_argument, NULL, OPTION_STACK}, + {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, + {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, +#ifdef TARGET_IS_i386pe + /* getopt allows abbreviations, so we do this to stop it from treating -o + as an abbreviation for this option */ + {"output-def", required_argument, NULL, OPTION_OUT_DEF}, + {"output-def", required_argument, NULL, OPTION_OUT_DEF}, + {"export-all-symbols", no_argument, NULL, OPTION_EXPORT_ALL}, + {"exclude-symbols", required_argument, NULL, OPTION_EXCLUDE_SYMBOLS}, + {"kill-at", no_argument, NULL, OPTION_KILL_ATS}, + {"add-stdcall-alias", no_argument, NULL, OPTION_STDCALL_ALIASES}, + {"enable-stdcall-fixup", no_argument, NULL, OPTION_ENABLE_STDCALL_FIXUP}, + {"disable-stdcall-fixup", no_argument, NULL, OPTION_DISABLE_STDCALL_FIXUP}, + {"out-implib", required_argument, NULL, OPTION_IMPLIB_FILENAME}, +#endif + {NULL, no_argument, NULL, 0} +}; + + +/* PE/WIN32; added routines to get the subsystem type, heap and/or stack + parameters which may be input from the command line */ + +typedef struct +{ + void *ptr; + int size; + int value; + char *symbol; + int inited; +} definfo; + +#define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0} + +static definfo init[] = +{ + /* imagebase must be first */ +#define IMAGEBASEOFF 0 + D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE), +#define DLLOFF 1 + {&dll, sizeof(dll), 0, "__dll__"}, + D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT), + D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT), + D(MajorOperatingSystemVersion,"__major_os_version__", 4), + D(MinorOperatingSystemVersion,"__minor_os_version__", 0), + D(MajorImageVersion,"__major_image_version__", 1), + D(MinorImageVersion,"__minor_image_version__", 0), + D(MajorSubsystemVersion,"__major_subsystem_version__", 4), + D(MinorSubsystemVersion,"__minor_subsystem_version__", 0), + D(Subsystem,"__subsystem__", 3), + D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x2000000), + D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000), + D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000), + D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000), + D(LoaderFlags,"__loader_flags__", 0x0), + { NULL, 0, 0, NULL, 0 } +}; + +static void +gld_${EMULATION_NAME}_list_options (file) + FILE * file; +{ + fprintf (file, _(" --base_file <basefile> Generate a base file for relocatable DLLs\n")); + fprintf (file, _(" --dll Set image base to the default for DLLs\n")); + fprintf (file, _(" --file-alignment <size> Set file alignment\n")); + fprintf (file, _(" --heap <size> Set initial size of the heap\n")); + fprintf (file, _(" --image-base <address> Set start address of the executable\n")); + fprintf (file, _(" --major-image-version <number> Set version number of the executable\n")); + fprintf (file, _(" --major-os-version <number> Set minimum required OS version\n")); + fprintf (file, _(" --major-subsystem-version <number> Set minimum required OS subsystem version\n")); + fprintf (file, _(" --minor-image-version <number> Set revision number of the executable\n")); + fprintf (file, _(" --minor-os-version <number> Set minimum required OS revision\n")); + fprintf (file, _(" --minor-subsystem-version <number> Set minimum required OS subsystem revision\n")); + fprintf (file, _(" --section-alignment <size> Set section alignment\n")); + fprintf (file, _(" --stack <size> Set size of the initial stack\n")); + fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); + fprintf (file, _(" --support-old-code Support interworking with old code\n")); +#ifdef TARGET_IS_i386pe + fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); + fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); + fprintf (file, _(" --enable-stdcall-fixup Link _sym to _sym@nn without warnings\n")); + fprintf (file, _(" --exclude-symbols sym,sym,... Exclude symbols from automatic export\n")); + fprintf (file, _(" --export-all-symbols Automatically export all globals to DLL\n")); + fprintf (file, _(" --kill-at Remove @nn from exported symbols\n")); + fprintf (file, _(" --out-implib <file> Generate import library\n")); + fprintf (file, _(" --output-def <file> Generate a .DEF file for the built DLL\n")); +#endif +} + +static void +set_pe_name (name, val) + char *name; + long val; +{ + int i; + /* Find the name and set it. */ + for (i = 0; init[i].ptr; i++) + { + if (strcmp (name, init[i].symbol) == 0) + { + init[i].value = val; + init[i].inited = 1; + return; + } + } + abort(); +} + + +static void +set_pe_subsystem () +{ + const char *sver; + int len; + int i; + static const struct + { + const char *name; + const int value; + const char *entry; + } + v[] = + { + { "native", 1, "_NtProcessStartup" }, + { "windows", 2, "_WinMainCRTStartup" }, + { "console", 3, "_mainCRTStartup" }, +#if 0 + /* The Microsoft linker does not recognize this. */ + { "os2", 5, "" }, +#endif + { "posix", 7, "___PosixProcessStartup"}, + { 0, 0, 0 } + }; + + sver = strchr (optarg, ':'); + if (sver == NULL) + len = strlen (optarg); + else + { + char *end; + + len = sver - optarg; + set_pe_name ("__major_subsystem_version__", + strtoul (sver + 1, &end, 0)); + if (*end == '.') + set_pe_name ("__minor_subsystem_version__", + strtoul (end + 1, &end, 0)); + if (*end != '\0') + einfo (_("%P: warning: bad version number in -subsystem option\n")); + } + + for (i = 0; v[i].name; i++) + { + if (strncmp (optarg, v[i].name, len) == 0 + && v[i].name[len] == '\0') + { + set_pe_name ("__subsystem__", v[i].value); + + lang_add_entry (v[i].entry, 1); + + return; + } + } + + einfo (_("%P%F: invalid subsystem type %s\n"), optarg); +} + + + +static void +set_pe_value (name) + char *name; + +{ + char *end; + + set_pe_name (name, strtoul (optarg, &end, 0)); + + if (end == optarg) + einfo (_("%P%F: invalid hex number for PE parameter '%s'\n"), optarg); + + optarg = end; +} + +static void +set_pe_stack_heap (resname, comname) + char *resname; + char *comname; +{ + set_pe_value (resname); + + if (*optarg == ',') + { + optarg++; + set_pe_value (comname); + } + else if (*optarg) + einfo (_("%P%F: strange hex info for PE parameter '%s'\n"), optarg); +} + + + +static int +gld_${EMULATION_NAME}_parse_args(argc, argv) + int argc; + char **argv; +{ + int longind; + int optc; + int prevoptind = optind; + int prevopterr = opterr; + int wanterror; + static int lastoptind = -1; + + if (lastoptind != optind) + opterr = 0; + wanterror = opterr; + + lastoptind = optind; + + optc = getopt_long_only (argc, argv, "-", longopts, &longind); + opterr = prevopterr; + + switch (optc) + { + default: + if (wanterror) + xexit (1); + optind = prevoptind; + return 0; + + case OPTION_BASE_FILE: + link_info.base_file = (PTR) fopen (optarg, FOPEN_WB); + if (link_info.base_file == NULL) + { + /* xgettext:c-format */ + fprintf (stderr, _("%s: Can't open base file %s\n"), + program_name, optarg); + xexit (1); + } + break; + + /* PE options */ + case OPTION_HEAP: + set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__"); + break; + case OPTION_STACK: + set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__"); + break; + case OPTION_SUBSYSTEM: + set_pe_subsystem (); + break; + case OPTION_MAJOR_OS_VERSION: + set_pe_value ("__major_os_version__"); + break; + case OPTION_MINOR_OS_VERSION: + set_pe_value ("__minor_os_version__"); + break; + case OPTION_MAJOR_SUBSYSTEM_VERSION: + set_pe_value ("__major_subsystem_version__"); + break; + case OPTION_MINOR_SUBSYSTEM_VERSION: + set_pe_value ("__minor_subsystem_version__"); + break; + case OPTION_MAJOR_IMAGE_VERSION: + set_pe_value ("__major_image_version__"); + break; + case OPTION_MINOR_IMAGE_VERSION: + set_pe_value ("__minor_image_version__"); + break; + case OPTION_FILE_ALIGNMENT: + set_pe_value ("__file_alignment__"); + break; + case OPTION_SECTION_ALIGNMENT: + set_pe_value ("__section_alignment__"); + break; + case OPTION_DLL: + set_pe_name ("__dll__", 1); + break; + case OPTION_IMAGE_BASE: + set_pe_value ("__image_base__"); + break; + case OPTION_SUPPORT_OLD_CODE: + support_old_code = 1; + break; + case OPTION_OUT_DEF: + pe_out_def_filename = xstrdup (optarg); + break; + case OPTION_EXPORT_ALL: + pe_dll_export_everything = 1; + break; + case OPTION_EXCLUDE_SYMBOLS: +#ifdef TARGET_IS_i386pe + pe_dll_add_excludes (optarg); +#endif + break; + case OPTION_KILL_ATS: + pe_dll_kill_ats = 1; + break; + case OPTION_STDCALL_ALIASES: + pe_dll_stdcall_aliases = 1; + break; + case OPTION_ENABLE_STDCALL_FIXUP: + pe_enable_stdcall_fixup = 1; + break; + case OPTION_DISABLE_STDCALL_FIXUP: + pe_enable_stdcall_fixup = 0; + break; + case OPTION_IMPLIB_FILENAME: + pe_implib_filename = xstrdup (optarg); + break; + } + return 1; +} + +/* Assign values to the special symbols before the linker script is + read. */ + +static void +gld_${EMULATION_NAME}_set_symbols () +{ + /* Run through and invent symbols for all the + names and insert the defaults. */ + int j; + lang_statement_list_type *save; + + if (!init[IMAGEBASEOFF].inited) + { + if (link_info.relocateable) + init[IMAGEBASEOFF].value = 0; + else if (init[DLLOFF].value || link_info.shared) + init[IMAGEBASEOFF].value = NT_DLL_IMAGE_BASE; + else + init[IMAGEBASEOFF].value = NT_EXE_IMAGE_BASE; + } + + /* Don't do any symbol assignments if this is a relocateable link. */ + if (link_info.relocateable) + return; + + /* Glue the assignments into the abs section */ + save = stat_ptr; + + stat_ptr = &(abs_output_section->children); + + for (j = 0; init[j].ptr; j++) + { + long val = init[j].value; + lang_assignment_statement_type *rv; + rv = lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val))); + if (init[j].size == sizeof(short)) + *(short *)init[j].ptr = val; + else if (init[j].size == sizeof(int)) + *(int *)init[j].ptr = val; + else if (init[j].size == sizeof(long)) + *(long *)init[j].ptr = val; + /* This might be a long long or other special type. */ + else if (init[j].size == sizeof(bfd_vma)) + *(bfd_vma *)init[j].ptr = val; + else abort(); + if (j == IMAGEBASEOFF) + image_base_statement = rv; + } + /* Restore the pointer. */ + stat_ptr = save; + + if (pe.FileAlignment > + pe.SectionAlignment) + { + einfo (_("%P: warning, file alignment > section alignment.\n")); + } +} + +/* This is called after the linker script and the command line options + have been read. */ + +static void +gld_${EMULATION_NAME}_after_parse () +{ + /* The Windows libraries are designed for the linker to treat the + entry point as an undefined symbol. Otherwise, the .obj that + defines mainCRTStartup is brought in because it is the first + encountered in libc.lib and it has other symbols in it which will + be pulled in by the link process. To avoid this, we act as + though the user specified -u with the entry point symbol. + + This function is called after the linker script and command line + options have been read, so at this point we know the right entry + point. This function is called before the input files are + opened, so registering the symbol as undefined will make a + difference. */ + + if (entry_symbol) + ldlang_add_undef (entry_symbol); +} + +static struct bfd_link_hash_entry *pe_undef_found_sym; + +static boolean +pe_undef_cdecl_match (h, string) + struct bfd_link_hash_entry *h; + PTR string; +{ + int sl = strlen (string); + if (h->type == bfd_link_hash_defined + && strncmp (h->root.string, string, sl) == 0 + && h->root.string[sl] == '@') + { + pe_undef_found_sym = h; + return false; + } + return true; +} + +static void +pe_fixup_stdcalls () +{ + static int gave_warning_message = 0; + struct bfd_link_hash_entry *undef, *sym; + char *at; + for (undef = link_info.hash->undefs; undef; undef=undef->next) + if (undef->type == bfd_link_hash_undefined) + { + at = strchr (undef->root.string, '@'); + if (at) + { + /* The symbol is a stdcall symbol, so let's look for a cdecl + symbol with the same name and resolve to that */ + char *cname = xstrdup (undef->root.string); + at = strchr (cname, '@'); + *at = 0; + sym = bfd_link_hash_lookup (link_info.hash, cname, 0, 0, 1); + if (sym && sym->type == bfd_link_hash_defined) + { + undef->type = bfd_link_hash_defined; + undef->u.def.value = sym->u.def.value; + undef->u.def.section = sym->u.def.section; + if (pe_enable_stdcall_fixup == -1) + { + einfo (_("Warning: resolving %s by linking to %s\n"), + undef->root.string, cname); + if (! gave_warning_message) + { + gave_warning_message = 1; + einfo(_("Use --enable-stdcall-fixup to disable these warnings\n")); + einfo(_("Use --disable-stdcall-fixup to disable these fixups\n")); + } + } + } + } + else + { + /* The symbol is a cdecl symbol, so we look for stdcall + symbols - which means scanning the whole symbol table */ + pe_undef_found_sym = 0; + bfd_link_hash_traverse (link_info.hash, pe_undef_cdecl_match, + (PTR) undef->root.string); + sym = pe_undef_found_sym; + if (sym) + { + undef->type = bfd_link_hash_defined; + undef->u.def.value = sym->u.def.value; + undef->u.def.section = sym->u.def.section; + if (pe_enable_stdcall_fixup == -1) + { + einfo (_("Warning: resolving %s by linking to %s\n"), + undef->root.string, sym->root.string); + if (! gave_warning_message) + { + gave_warning_message = 1; + einfo(_("Use --enable-stdcall-fixup to disable these warnings\n")); + einfo(_("Use --disable-stdcall-fixup to disable these fixups\n")); + } + } + } + } + } +} + +static void +gld_${EMULATION_NAME}_after_open () +{ + /* Pass the wacky PE command line options into the output bfd. + FIXME: This should be done via a function, rather than by + including an internal BFD header. */ + + if (!coff_data (output_bfd)->pe) + einfo (_("%F%P: PE operations on non PE file.\n")); + + pe_data (output_bfd)->pe_opthdr = pe; + pe_data (output_bfd)->dll = init[DLLOFF].value; + +#ifdef TARGET_IS_i386pe + if (pe_enable_stdcall_fixup) /* -1=warn or 1=disable */ + pe_fixup_stdcalls (); + + pe_process_import_defs(output_bfd, &link_info); + if (link_info.shared) + pe_dll_build_sections (output_bfd, &link_info); +#endif + +#ifdef TARGET_IS_armpe + { + /* Find a BFD that can hold the interworking stubs. */ + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (bfd_arm_get_bfd_for_interworking (is->the_bfd, & link_info)) + break; + } + } +#endif +} + +static void +gld_${EMULATION_NAME}_before_allocation() +{ +#ifdef TARGET_IS_ppcpe + /* Here we rummage through the found bfds to collect toc information */ + { + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (!ppc_process_before_allocation (is->the_bfd, &link_info)) + { + /* xgettext:c-format */ + einfo (_("Errors encountered processing file %s\n"), is->filename); + } + } + } + + /* We have seen it all. Allocate it, and carry on */ + ppc_allocate_toc_section (&link_info); +#endif /* TARGET_IS_ppcpe */ + +#ifdef TARGET_IS_armpe + /* FIXME: we should be able to set the size of the interworking stub + section. + + Here we rummage through the found bfds to collect glue + information. FIXME: should this be based on a command line + option? krk@cygnus.com */ + { + LANG_FOR_EACH_INPUT_STATEMENT (is) + { + if (! bfd_arm_process_before_allocation + (is->the_bfd, & link_info, support_old_code)) + { + /* xgettext:c-format */ + einfo (_("Errors encountered processing file %s for interworking"), + is->filename); + } + } + } + + /* We have seen it all. Allocate it, and carry on */ + bfd_arm_allocate_interworking_sections (& link_info); +#endif /* TARGET_IS_armpe */ +} + + +/* This is called when an input file isn't recognized as a BFD. We + check here for .DEF files and pull them in automatically. */ + +static int +saw_option(char *option) +{ + int i; + for (i=0; init[i].ptr; i++) + if (strcmp (init[i].symbol, option) == 0) + return init[i].inited; + return 0; +} + +static boolean +gld_${EMULATION_NAME}_unrecognized_file(entry) + lang_input_statement_type *entry; +{ +#ifdef TARGET_IS_i386pe + const char *ext = entry->filename + strlen (entry->filename) - 4; + + if (strcmp (ext, ".def") == 0 || strcmp (ext, ".DEF") == 0) + { + if (pe_def_file == 0) + pe_def_file = def_file_empty (); + def_file_parse (entry->filename, pe_def_file); + if (pe_def_file) + { + int i, buflen=0, len; + char *buf; + for (i=0; i<pe_def_file->num_exports; i++) + { + len = strlen(pe_def_file->exports[i].internal_name); + if (buflen < len+2) + buflen = len+2; + } + buf = (char *) xmalloc (buflen); + for (i=0; i<pe_def_file->num_exports; i++) + { + struct bfd_link_hash_entry *h; + sprintf(buf, "_%s", pe_def_file->exports[i].internal_name); + + h = bfd_link_hash_lookup (link_info.hash, buf, true, true, true); + if (h == (struct bfd_link_hash_entry *) NULL) + einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); + if (h->type == bfd_link_hash_new) + { + h->type = bfd_link_hash_undefined; + h->u.undef.abfd = NULL; + bfd_link_add_undef (link_info.hash, h); + } + } + free (buf); + + /* def_file_print (stdout, pe_def_file); */ + if (pe_def_file->is_dll == 1) + link_info.shared = 1; + + if (pe_def_file->base_address != (bfd_vma)(-1)) + { + pe.ImageBase = + pe_data (output_bfd)->pe_opthdr.ImageBase = + init[IMAGEBASEOFF].value = pe_def_file->base_address; + init[IMAGEBASEOFF].inited = 1; + if (image_base_statement) + image_base_statement->exp = + exp_assop ('=', "__image_base__", exp_intop (pe.ImageBase)); + } + +#if 0 + /* Not sure if these *should* be set */ + if (pe_def_file->version_major != -1) + { + pe.MajorImageVersion = pe_def_file->version_major; + pe.MinorImageVersion = pe_def_file->version_minor; + } +#endif + if (pe_def_file->stack_reserve != -1 + && ! saw_option ("__size_of_stack_reserve__")) + { + pe.SizeOfStackReserve = pe_def_file->stack_reserve; + if (pe_def_file->stack_commit != -1) + pe.SizeOfStackCommit = pe_def_file->stack_commit; + } + if (pe_def_file->heap_reserve != -1 + && ! saw_option ("__size_of_heap_reserve__")) + { + pe.SizeOfHeapReserve = pe_def_file->heap_reserve; + if (pe_def_file->heap_commit != -1) + pe.SizeOfHeapCommit = pe_def_file->heap_commit; + } + return true; + } + } +#endif + return false; + +} + +static boolean +gld_${EMULATION_NAME}_recognized_file(entry) + lang_input_statement_type *entry; +{ +#ifdef TARGET_IS_i386pe + if (bfd_get_format (entry->the_bfd) == bfd_object) + { + const char *ext = entry->filename + strlen (entry->filename) - 4; + if (strcmp (ext, ".dll") == 0 || strcmp (ext, ".DLL") == 0) + return pe_implied_import_dll (entry->filename); + } +#endif + return false; +} + +static void +gld_${EMULATION_NAME}_finish () +{ +#ifdef TARGET_IS_i386pe + if (link_info.shared) + { + pe_dll_fill_sections (output_bfd, &link_info); + if (pe_implib_filename) + pe_dll_generate_implib (pe_def_file, pe_implib_filename); + } + if (pe_out_def_filename) + pe_dll_generate_def_file (pe_out_def_filename); +#endif +} + + +/* Place an orphan section. + + We use this to put sections in a reasonable place in the file, and + to ensure that they are aligned as required. + + We handle grouped sections here as well. A section named .foo$nn + goes into the output section .foo. All grouped sections are sorted + by name. + + Grouped sections for the default sections are handled by the + default linker script using wildcards, and are sorted by + sort_sections. */ + +static asection *hold_section; +static char *hold_section_name; +static lang_output_section_statement_type *hold_use; +static lang_output_section_statement_type *hold_text; +static lang_output_section_statement_type *hold_rdata; +static lang_output_section_statement_type *hold_data; +static lang_output_section_statement_type *hold_bss; + +/* Place an orphan section. We use this to put random SHF_ALLOC + sections in the right segment. */ + +/*ARGSUSED*/ +static boolean +gld_${EMULATION_NAME}_place_orphan (file, s) + lang_input_statement_type *file; + asection *s; +{ + const char *secname; + char *dollar; + + if ((s->flags & SEC_ALLOC) == 0) + return false; + + secname = bfd_get_section_name (s->owner, s); + + /* Look through the script to see where to place this section. */ + + hold_section = s; + + hold_section_name = xstrdup (secname); + dollar = strchr (hold_section_name, '$'); + if (dollar != NULL) + *dollar = '\0'; + + hold_use = NULL; + lang_for_each_statement (gld${EMULATION_NAME}_place_section); + + if (hold_use == NULL) + { + lang_output_section_statement_type *place; + char *outsecname; + asection *snew, **pps; + lang_statement_list_type *old; + lang_statement_list_type add; + etree_type *address; + + /* Try to put the new output section in a reasonable place based + on the section name and section flags. */ + place = NULL; + if ((s->flags & SEC_HAS_CONTENTS) == 0 + && hold_bss != NULL) + place = hold_bss; + else if ((s->flags & SEC_READONLY) == 0 + && hold_data != NULL) + place = hold_data; + else if ((s->flags & SEC_CODE) == 0 + && (s->flags & SEC_READONLY) != 0 + && hold_rdata != NULL) + place = hold_rdata; + else if ((s->flags & SEC_READONLY) != 0 + && hold_text != NULL) + place = hold_text; + + /* Choose a unique name for the section. This will be needed if + the same section name appears in the input file with + different loadable or allocateable characteristics. */ + outsecname = xstrdup (hold_section_name); + if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) + { + unsigned int len; + char *newname; + unsigned int i; + + len = strlen (outsecname); + newname = xmalloc (len + 5); + strcpy (newname, outsecname); + i = 0; + do + { + sprintf (newname + len, "%d", i); + ++i; + } + while (bfd_get_section_by_name (output_bfd, newname) != NULL); + + free (outsecname); + outsecname = newname; + } + + /* We don't want to free OUTSECNAME, as it may get attached to + the output section statement. */ + + /* Create the section in the output file, and put it in the + right place. This shuffling is to make the output file look + neater. */ + snew = bfd_make_section (output_bfd, outsecname); + if (snew == NULL) + einfo ("%P%F: output format %s cannot represent section called %s\n", + output_bfd->xvec->name, outsecname); + if (place != NULL && place->bfd_section != NULL) + { + for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) + ; + *pps = snew->next; + snew->next = place->bfd_section->next; + place->bfd_section->next = snew; + } + + /* Start building a list of statements for this section. */ + old = stat_ptr; + stat_ptr = &add; + lang_list_init (stat_ptr); + + if (link_info.relocateable) + address = NULL; + else + { + /* All sections in an executable must be aligned to a page + boundary. */ + address = exp_unop (ALIGN_K, + exp_nameop (NAME, "__section_alignment__")); + } + + lang_enter_output_section_statement (outsecname, address, 0, + (bfd_vma) 0, + (etree_type *) NULL, + (etree_type *) NULL, + (etree_type *) NULL); + + hold_use = lang_output_section_statement_lookup (outsecname); + + lang_leave_output_section_statement + ((bfd_vma) 0, "*default*", + (struct lang_output_section_phdr_list *) NULL); + + /* Now stick the new statement list right after PLACE. */ + if (place != NULL) + { + *add.tail = place->header.next; + place->header.next = add.head; + } + + stat_ptr = old; + } + + if (dollar == NULL) + wild_doit (&hold_use->children, s, hold_use, file); + else + { + lang_statement_union_type **pl; + boolean found_dollar; + lang_statement_list_type list; + + /* The section name has a '$'. Sort it with the other '$' + sections. */ + + found_dollar = false; + for (pl = &hold_use->children.head; *pl != NULL; pl = &(*pl)->next) + { + lang_input_section_type *ls; + const char *lname; + + if ((*pl)->header.type != lang_input_section_enum) + continue; + + ls = &(*pl)->input_section; + + lname = bfd_get_section_name (ls->ifile->the_bfd, ls->section); + if (strchr (lname, '$') == NULL) + { + if (found_dollar) + break; + } + else + { + found_dollar = true; + if (strcmp (secname, lname) < 0) + break; + } + } + + lang_list_init (&list); + wild_doit (&list, s, hold_use, file); + if (list.head != NULL) + { + ASSERT (list.head->next == NULL); + list.head->next = *pl; + *pl = list.head; + } + } + + free (hold_section_name); + + return true; +} + +static void +gld${EMULATION_NAME}_place_section (s) + lang_statement_union_type *s; +{ + lang_output_section_statement_type *os; + + if (s->header.type != lang_output_section_statement_enum) + return; + + os = &s->output_section_statement; + + if (strcmp (os->name, hold_section_name) == 0 + && os->bfd_section != NULL + && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC)) + == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC)))) + hold_use = os; + + if (strcmp (os->name, ".text") == 0) + hold_text = os; + else if (strcmp (os->name, ".rdata") == 0) + hold_rdata = os; + else if (strcmp (os->name, ".data") == 0) + hold_data = os; + else if (strcmp (os->name, ".bss") == 0) + hold_bss = os; +} + +static char * +gld_${EMULATION_NAME}_get_script(isfile) + int *isfile; +EOF +# Scripts compiled in. +# sed commands to quote an ld script as a C string. +sc="-f ${srcdir}/emultempl/stringify.sed" + +cat >>e${EMULATION_NAME}.c <<EOF +{ + *isfile = 0; + + if (link_info.relocateable == true && config.build_constructors == true) + return +EOF +sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c +echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c +echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c +echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c +echo ' ; else return' >> e${EMULATION_NAME}.c +sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c +echo '; }' >> e${EMULATION_NAME}.c + +cat >>e${EMULATION_NAME}.c <<EOF + + +struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = +{ + gld_${EMULATION_NAME}_before_parse, + syslib_default, + hll_default, + gld_${EMULATION_NAME}_after_parse, + gld_${EMULATION_NAME}_after_open, + after_allocation_default, + set_output_arch_default, + ldemul_default_target, + gld_${EMULATION_NAME}_before_allocation, + gld_${EMULATION_NAME}_get_script, + "${EMULATION_NAME}", + "${OUTPUT_FORMAT}", + gld_${EMULATION_NAME}_finish, /* finish */ + NULL, /* create output section statements */ + NULL, /* open dynamic archive */ + gld_${EMULATION_NAME}_place_orphan, + gld_${EMULATION_NAME}_set_symbols, + gld_${EMULATION_NAME}_parse_args, + gld_${EMULATION_NAME}_unrecognized_file, + gld_${EMULATION_NAME}_list_options, + gld_${EMULATION_NAME}_recognized_file +}; +EOF |