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# This shell script emits a C file. -*- C -*-# It does some substitutions.if [ -z "$MACHINE" ]; thenOUTPUT_ARCH=${ARCH}elseOUTPUT_ARCH=${ARCH}:${MACHINE}fifragment <<EOF/* This file is part of GLD, the Gnu Linker.Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,2005, 2006, 2007, 2008 Free Software Foundation, Inc.This file is part of the GNU Binutils.This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 3 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 51 Franklin Street - Fifth Floor, Boston,MA 02110-1301, USA. *//* For WINDOWS_NT *//* The original file generated returned different default scripts dependingon whether certain switches were set, but these switches pertain to theLinux system and that particular version of coff. In the NT case, weonly determine if the subsystem is console or windows in order to selectthe correct entry point by default. */#include "sysdep.h"#include "bfd.h"#include "bfdlink.h"#include "getopt.h"#include "libiberty.h"#include "ld.h"#include "ldmain.h"#include "ldexp.h"#include "ldlang.h"#include "ldfile.h"#include "ldemul.h"#include <ldgram.h>#include "ldlex.h"#include "ldmisc.h"#include "ldctor.h"#include "coff/internal.h"#include "../bfd/libcoff.h"#define TARGET_IS_${EMULATION_NAME}static struct internal_extra_pe_aouthdr pe;static int dll;extern const char *output_filename;static voidgld_${EMULATION_NAME}_before_parse (void){ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);output_filename = "a.exe";}/* PE format extra command line options. *//* Used for setting flags in the PE header. */#define OPTION_BASE_FILE (300 + 1)#define OPTION_DLL (OPTION_BASE_FILE + 1)#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)#define OPTION_SUBSYSTEM (OPTION_STACK + 1)#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)static voidgld${EMULATION_NAME}_add_options(int ns ATTRIBUTE_UNUSED, char **shortopts ATTRIBUTE_UNUSED, int nl,struct option **longopts, int nrl ATTRIBUTE_UNUSED,struct option **really_longopts ATTRIBUTE_UNUSED){static const struct option xtra_long[] = {/* 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},{NULL, no_argument, NULL, 0}};*longopts = (struct option *)xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));}/* PE/WIN32; added routines to get the subsystem type, heap and/or stackparameters 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 0D(ImageBase,"__image_base__", BEOS_EXE_IMAGE_BASE),#define DLLOFF 1{&dll, sizeof(dll), 0, "__dll__", 0},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 voidset_pe_name (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 voidset_pe_subsystem (void){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" },{ "wwindows", 2, "_wWinMainCRTStartup" },{ "console", 3, "_mainCRTStartup" },{ "wconsole", 3, "_wmainCRTStartup" },{ "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);/* If the subsystem is windows, we use a different entrypoint. */lang_default_entry (v[i].entry);return;}}einfo ("%P%F: invalid subsystem type %s\n", optarg);}static voidset_pe_value (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 voidset_pe_stack_heap (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 bfd_booleangld${EMULATION_NAME}_handle_option (int optc){switch (optc){default:return FALSE;case OPTION_BASE_FILE:link_info.base_file = fopen (optarg, FOPEN_WB);if (link_info.base_file == NULL){fprintf (stderr, "%s: Can't open base file %s\n",program_name, optarg);xexit (1);}break;/* PE options */case OPTION_HEAP:set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");break;case OPTION_STACK:set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");break;case OPTION_SUBSYSTEM:set_pe_subsystem ();break;case OPTION_MAJOR_OS_VERSION:set_pe_value ("__major_os_version__");break;case OPTION_MINOR_OS_VERSION:set_pe_value ("__minor_os_version__");break;case OPTION_MAJOR_SUBSYSTEM_VERSION:set_pe_value ("__major_subsystem_version__");break;case OPTION_MINOR_SUBSYSTEM_VERSION:set_pe_value ("__minor_subsystem_version__");break;case OPTION_MAJOR_IMAGE_VERSION:set_pe_value ("__major_image_version__");break;case OPTION_MINOR_IMAGE_VERSION:set_pe_value ("__minor_image_version__");break;case OPTION_FILE_ALIGNMENT:set_pe_value ("__file_alignment__");break;case OPTION_SECTION_ALIGNMENT:set_pe_value ("__section_alignment__");break;case OPTION_DLL:set_pe_name ("__dll__", 1);break;case OPTION_IMAGE_BASE:set_pe_value ("__image_base__");break;}return TRUE;}/* Assign values to the special symbols before the linker script isread. */static voidgld_${EMULATION_NAME}_set_symbols (void){/* Run through and invent symbols for all thenames and insert the defaults. */int j;lang_statement_list_type *save;if (!init[IMAGEBASEOFF].inited){if (link_info.relocatable)init[IMAGEBASEOFF].value = 0;else if (init[DLLOFF].value)init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE;elseinit[IMAGEBASEOFF].value = BEOS_EXE_IMAGE_BASE;}/* Don't do any symbol assignments if this is a relocatable link. */if (link_info.relocatable)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_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();}/* Restore the pointer. */stat_ptr = save;if (pe.FileAlignment >pe.SectionAlignment){einfo ("%P: warning, file alignment > section alignment.\n");}}static voidgld_${EMULATION_NAME}_after_open (void){/* Pass the wacky PE command line options into the output bfd.FIXME: This should be done via a function, rather than byincluding an internal BFD header. */if (!coff_data(link_info.output_bfd)->pe){einfo ("%F%P: PE operations on non PE file.\n");}pe_data(link_info.output_bfd)->pe_opthdr = pe;pe_data(link_info.output_bfd)->dll = init[DLLOFF].value;}/* Callback functions for qsort in sort_sections. */static intsort_by_file_name (const void *a, const void *b){const lang_statement_union_type *const *ra = a;const lang_statement_union_type *const *rb = b;int i, a_sec, b_sec;i = strcmp ((*ra)->input_section.section->owner->my_archive->filename,(*rb)->input_section.section->owner->my_archive->filename);if (i != 0)return i;i = strcmp ((*ra)->input_section.section->owner->filename,(*rb)->input_section.section->owner->filename);if (i != 0)return i;/* the tail idata4/5 are the only ones without relocs to anidata$6 section unless we are importing by ordinal,so sort them to last to terminate the IATand HNT properly. if no reloc this one is import by ordinalso we have to sort by section contents */if ( ((*ra)->input_section.section->reloc_count + (*rb)->input_section.section->reloc_count) ){i = (((*ra)->input_section.section->reloc_count >(*rb)->input_section.section->reloc_count) ? -1 : 0);if ( i != 0)return i;return (((*ra)->input_section.section->reloc_count >(*rb)->input_section.section->reloc_count) ? 0 : 1);}else{if ( (strcmp( (*ra)->input_section.section->name, ".idata$6") == 0) )return 0; /* don't sort .idata$6 or .idata$7 FIXME dlltool eliminate .idata$7 */if (! bfd_get_section_contents ((*ra)->input_section.section->owner,(*ra)->input_section.section, &a_sec, (file_ptr) 0, (bfd_size_type)sizeof(a_sec)))einfo ("%F%B: Can't read contents of section .idata: %E\n",(*ra)->input_section.section->owner);if (! bfd_get_section_contents ((*rb)->input_section.section->owner,(*rb)->input_section.section, &b_sec, (file_ptr) 0, (bfd_size_type)sizeof(b_sec) ))einfo ("%F%B: Can't read contents of section .idata: %E\n",(*rb)->input_section.section->owner);i = ((a_sec < b_sec) ? -1 : 0);if ( i != 0)return i;return ((a_sec < b_sec) ? 0 : 1);}return 0;}static intsort_by_section_name (const void *a, const void *b){const lang_statement_union_type *const *ra = a;const lang_statement_union_type *const *rb = b;int i;i = strcmp ((*ra)->input_section.section->name,(*rb)->input_section.section->name);/* This is a hack to make .stab and .stabstr last, so we don't haveto fix strip/objcopy for .reloc sections.FIXME stripping images with a .rsrc section still needs to be fixed. */if (i != 0){if ((CONST_STRNEQ ((*ra)->input_section.section->name, ".stab"))&& (! CONST_STRNEQ ((*rb)->input_section.section->name, ".stab")))return 1;}return i;}/* Subroutine of sort_sections to a contiguous subset of a list of sections.NEXT_AFTER is the element after the last one to sort.The result is a pointer to the last element's "next" pointer. */static lang_statement_union_type **sort_sections_1 (lang_statement_union_type **startptr,lang_statement_union_type *next_after,int count,int (*sort_func) (const void *, const void *)){lang_statement_union_type **vec;lang_statement_union_type *p;int i;lang_statement_union_type **ret;if (count == 0)return startptr;vec = ((lang_statement_union_type **)xmalloc (count * sizeof (lang_statement_union_type *)));for (p = *startptr, i = 0; i < count; i++, p = p->header.next)vec[i] = p;qsort (vec, count, sizeof (vec[0]), sort_func);/* Fill in the next pointers again. */*startptr = vec[0];for (i = 0; i < count - 1; i++)vec[i]->header.next = vec[i + 1];vec[i]->header.next = next_after;ret = &vec[i]->header.next;free (vec);return ret;}/* Sort the .idata\$foo input sections of archives into filename order.The reason is so dlltool can arrange to have the pe dll import informationgenerated correctly - the head of the list goes into dh.o, the tail intodt.o, and the guts into ds[nnnn].o. Note that this is only needed for the.idata section.FIXME: This may no longer be necessary with grouped sections. Instead ofsorting on dh.o, ds[nnnn].o, dt.o, one could, for example, have dh.o use.idata\$4h, have ds[nnnn].o use .idata\$4s[nnnn], and have dt.o use .idata\$4t.This would have to be elaborated upon to handle multiple dll's[assuming such an eloboration is possible of course].We also sort sections in '\$' wild statements. These are created by theplace_orphans routine to implement grouped sections. */static voidsort_sections (lang_statement_union_type *s){for (; s ; s = s->header.next)switch (s->header.type){case lang_output_section_statement_enum:sort_sections (s->output_section_statement.children.head);break;case lang_wild_statement_enum:{lang_statement_union_type **p = &s->wild_statement.children.head;struct wildcard_list *sec;for (sec = s->wild_statement.section_list; sec; sec = sec->next){/* Is this the .idata section? */if (sec->spec.name != NULL&& CONST_STRNEQ (sec->spec.name, ".idata")){/* Sort the children. We want to sort any objects inthe same archive. In order to handle the case ofincluding a single archive multiple times, we sortall the children by archive name and then by objectname. After sorting them, we re-thread the pointerchain. */while (*p){lang_statement_union_type *start = *p;if (start->header.type != lang_input_section_enum|| !start->input_section.section->owner->my_archive)p = &(start->header.next);else{lang_statement_union_type *end;int count;for (end = start, count = 0;end && (end->header.type== lang_input_section_enum);end = end->header.next)count++;p = sort_sections_1 (p, end, count,sort_by_file_name);}}break;}/* If this is a collection of grouped sections, sort them.The linker script must explicitly mention "*(.foo\$)" or"*(.foo\$*)". Don't sort them if \$ is not the lastcharacter (not sure if this is really useful, but itallows explicitly mentioning some \$ sections and lettingthe linker handle the rest). */if (sec->spec.name != NULL){char *q = strchr (sec->spec.name, '\$');if (q != NULL&& (q[1] == '\0'|| (q[1] == '*' && q[2] == '\0'))){lang_statement_union_type *end;int count;for (end = *p, count = 0; end; end = end->header.next){if (end->header.type != lang_input_section_enum)abort ();count++;}(void) sort_sections_1 (p, end, count,sort_by_section_name);}break;}}}break;default:break;}}static voidgld_${EMULATION_NAME}_before_allocation (void){extern lang_statement_list_type *stat_ptr;#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)){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);#else#ifdef TARGET_IS_armpe/* FIXME: we should be able to set the size of the interworking stubsection.Here we rummage through the found bfds to collect glueinformation. FIXME: should this be based on a command lineoption? krk@cygnus.com */{LANG_FOR_EACH_INPUT_STATEMENT (is){if (!arm_process_before_allocation (is->the_bfd, & link_info)){einfo ("Errors encountered processing file %s", is->filename);}}}/* We have seen it all. Allocate it, and carry on */arm_allocate_interworking_sections (& link_info);#endif /* TARGET_IS_armpe */#endif /* TARGET_IS_ppcpe */sort_sections (stat_ptr->head);before_allocation_default ();}/* Place an orphan section. We use this to put sections with a '\$' in theminto the right place. Any section with a '\$' in them (e.g. .text\$foo)gets mapped to the output section with everything from the '\$' on stripped(e.g. .text).See the Microsoft Portable Executable and Common Object File FormatSpecification 4.1, section 4.2, Grouped Sections.FIXME: This is now handled by the linker script using wildcards,but I'm leaving this here in case we want to enable it for sectionswhich are not mentioned in the linker script. */static bfd_booleangld${EMULATION_NAME}_place_orphan (asection *s){const char *secname;char *output_secname, *ps;lang_output_section_statement_type *os;lang_statement_union_type *l;if ((s->flags & SEC_ALLOC) == 0)return FALSE;/* Don't process grouped sections unless doing a final link.If they're marked as COMDAT sections, we don't want .text\$foo toend up in .text and then have .text disappear because it's markedlink-once-discard. */if (link_info.relocatable)return FALSE;secname = bfd_get_section_name (s->owner, s);/* Everything from the '\$' on gets deleted so don't allow '\$' as thefirst character. */if (*secname == '\$')einfo ("%P%F: section %s has '\$' as first character\n", secname);if (strchr (secname + 1, '\$') == NULL)return FALSE;/* Look up the output section. The Microsoft specs say sections names inimage files never contain a '\$'. Fortunately, lang_..._lookup createsthe section if it doesn't exist. */output_secname = xstrdup (secname);ps = strchr (output_secname + 1, '\$');*ps = 0;os = lang_output_section_statement_lookup (output_secname);/* Find the '\$' wild statement for this section. We currently require thelinker script to explicitly mention "*(.foo\$)".FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to theMicrosoft docs this isn't correct so it's not (currently) handled. */ps[0] = '\$';ps[1] = 0;for (l = os->children.head; l; l = l->header.next)if (l->header.type == lang_wild_statement_enum){struct wildcard_list *sec;for (sec = l->wild_statement.section_list; sec; sec = sec->next)if (sec->spec.name && strcmp (sec->spec.name, output_secname) == 0)break;if (sec)break;}ps[0] = 0;if (l == NULL)einfo ("%P%F: *(%s\$) missing from linker script\n", output_secname);/* Link the input section in and we're done for now.The sections still have to be sorted, but that has to wait untilall such sections have been processed by us. The sorting is done bysort_sections. */lang_add_section (&l->wild_statement.children, s, os);return TRUE;}static char *gld_${EMULATION_NAME}_get_script (int *isfile)EOF# Scripts compiled in.# sed commands to quote an ld script as a C string.sc="-f stringify.sed"fragment <<EOF{*isfile = 0;if (link_info.relocatable && config.build_constructors)returnEOFsed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.cecho ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.csed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.cecho ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.csed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.cecho ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.csed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.cecho ' ; else return' >> e${EMULATION_NAME}.csed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.cecho '; }' >> e${EMULATION_NAME}.cfragment <<EOFstruct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation ={gld_${EMULATION_NAME}_before_parse,syslib_default,hll_default,after_parse_default,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}","${OUTPUT_FORMAT}",finish_default,NULL, /* create output section statements */NULL, /* open dynamic archive */gld${EMULATION_NAME}_place_orphan,gld_${EMULATION_NAME}_set_symbols,NULL, /* parse_args */gld${EMULATION_NAME}_add_options,gld${EMULATION_NAME}_handle_option,NULL, /* unrecognized file */NULL, /* list options */NULL, /* recognized file */NULL, /* find_potential_libraries */NULL /* new_vers_pattern */};EOF
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