eb8476a6e2
* elflink.c (bfd_elf_record_link_assignment): Remove --defsym symbols special case. ld/ * ldexp.h (etree_union): Add defsym member to the assign member structure. (exp_assign): Add hidden argument to prototype. * ldexp.c (exp_fold_tree_1): Use the defsym member to handle --defsym symbols. (exp_assop): Add defsym argument, initialize the defsym member of the assign structure. (exp_assign): Handle hidden symbols. (exp_defsym): Update to use the defsym argument to exp_assop. (exp_provide): Update to handle the defsym argument to exp_assop. * ldlex.l (HIDDEN): New token. * ldgram.y (HIDDEN): Likewise. (assignment, section): Update calls to exp_assign. * ldctor.c (ldctor_build_sets): Likewise. * mri.c (mri_format): Likewise. * ldlang.c (lang_insert_orphan, lang_leave_overlay): Likewise. (open_input_bfds): Remove --defsym symbols special case. * emultempl/beos.em (gld_${EMULATION_NAME}_set_symbols): Update call to exp_assign. * emultempl/pe.em (gld_${EMULATION_NAME}_set_symbols): Likewise. * emultempl/pep.em (gld_${EMULATION_NAME}_set_symbols): Likewise. * emultempl/spuelf.em (spu_place_special_section): Likewise. * emultempl/xtensaelf.em (ld_xtensa_insert_page_offsets): Likewise. * ld.texinfo (Assigning Values to Symbols): Add HIDDEN. (HIDDEN): New subsection.
784 lines
24 KiB
Plaintext
784 lines
24 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
|
||
# It does some substitutions.
|
||
if [ -z "$MACHINE" ]; then
|
||
OUTPUT_ARCH=${ARCH}
|
||
else
|
||
OUTPUT_ARCH=${ARCH}:${MACHINE}
|
||
fi
|
||
fragment <<EOF
|
||
/* This file is part of GLD, the Gnu Linker.
|
||
Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
|
||
2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
|
||
|
||
This file is part of the GNU Binutils.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
|
||
/* For WINDOWS_NT */
|
||
/* The original file generated returned different default scripts depending
|
||
on whether certain switches were set, but these switches pertain to the
|
||
Linux system and that particular version of coff. In the NT case, we
|
||
only determine if the subsystem is console or windows in order to select
|
||
the correct entry point by default. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "bfdlink.h"
|
||
#include "getopt.h"
|
||
#include "libiberty.h"
|
||
#include "filenames.h"
|
||
#include "ld.h"
|
||
#include "ldmain.h"
|
||
#include "ldexp.h"
|
||
#include "ldlang.h"
|
||
#include "ldfile.h"
|
||
#include "ldemul.h"
|
||
#include <ldgram.h>
|
||
#include "ldlex.h"
|
||
#include "ldmisc.h"
|
||
#include "ldctor.h"
|
||
#include "coff/internal.h"
|
||
#include "../bfd/libcoff.h"
|
||
|
||
#define TARGET_IS_${EMULATION_NAME}
|
||
|
||
static struct internal_extra_pe_aouthdr pe;
|
||
static int dll;
|
||
|
||
extern const char *output_filename;
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_before_parse (void)
|
||
{
|
||
ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
|
||
output_filename = "a.exe";
|
||
}
|
||
|
||
/* PE format extra command line options. */
|
||
|
||
/* Used for setting flags in the PE header. */
|
||
#define OPTION_BASE_FILE (300 + 1)
|
||
#define OPTION_DLL (OPTION_BASE_FILE + 1)
|
||
#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
|
||
#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
|
||
#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
|
||
#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
|
||
#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
|
||
#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
|
||
#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
|
||
#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
|
||
#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
|
||
#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
|
||
#define OPTION_SUBSYSTEM (OPTION_STACK + 1)
|
||
#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
|
||
|
||
static void
|
||
gld${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 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__", 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 void
|
||
set_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 void
|
||
set_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 entry
|
||
point. */
|
||
lang_default_entry (v[i].entry);
|
||
|
||
return;
|
||
}
|
||
}
|
||
einfo ("%P%F: invalid subsystem type %s\n", optarg);
|
||
}
|
||
|
||
|
||
static void
|
||
set_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 void
|
||
set_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_boolean
|
||
gld${EMULATION_NAME}_handle_option (int optc)
|
||
{
|
||
switch (optc)
|
||
{
|
||
default:
|
||
return FALSE;
|
||
|
||
case OPTION_BASE_FILE:
|
||
link_info.base_file = fopen (optarg, FOPEN_WB);
|
||
if (link_info.base_file == NULL)
|
||
einfo (_("%F%P: cannot open base file %s\n"), optarg);
|
||
break;
|
||
|
||
/* PE options */
|
||
case OPTION_HEAP:
|
||
set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
|
||
break;
|
||
case OPTION_STACK:
|
||
set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
|
||
break;
|
||
case OPTION_SUBSYSTEM:
|
||
set_pe_subsystem ();
|
||
break;
|
||
case OPTION_MAJOR_OS_VERSION:
|
||
set_pe_value ("__major_os_version__");
|
||
break;
|
||
case OPTION_MINOR_OS_VERSION:
|
||
set_pe_value ("__minor_os_version__");
|
||
break;
|
||
case OPTION_MAJOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__major_subsystem_version__");
|
||
break;
|
||
case OPTION_MINOR_SUBSYSTEM_VERSION:
|
||
set_pe_value ("__minor_subsystem_version__");
|
||
break;
|
||
case OPTION_MAJOR_IMAGE_VERSION:
|
||
set_pe_value ("__major_image_version__");
|
||
break;
|
||
case OPTION_MINOR_IMAGE_VERSION:
|
||
set_pe_value ("__minor_image_version__");
|
||
break;
|
||
case OPTION_FILE_ALIGNMENT:
|
||
set_pe_value ("__file_alignment__");
|
||
break;
|
||
case OPTION_SECTION_ALIGNMENT:
|
||
set_pe_value ("__section_alignment__");
|
||
break;
|
||
case OPTION_DLL:
|
||
set_pe_name ("__dll__", 1);
|
||
break;
|
||
case OPTION_IMAGE_BASE:
|
||
set_pe_value ("__image_base__");
|
||
break;
|
||
}
|
||
return TRUE;
|
||
}
|
||
|
||
/* Assign values to the special symbols before the linker script is
|
||
read. */
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_set_symbols (void)
|
||
{
|
||
/* Run through and invent symbols for all the
|
||
names and insert the defaults. */
|
||
int j;
|
||
|
||
if (!init[IMAGEBASEOFF].inited)
|
||
{
|
||
if (link_info.relocatable)
|
||
init[IMAGEBASEOFF].value = 0;
|
||
else if (init[DLLOFF].value)
|
||
init[IMAGEBASEOFF].value = BEOS_DLL_IMAGE_BASE;
|
||
else
|
||
init[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 */
|
||
push_stat_ptr (&abs_output_section->children);
|
||
|
||
for (j = 0; init[j].ptr; j++)
|
||
{
|
||
long val = init[j].value;
|
||
lang_add_assignment (exp_assign (init[j].symbol, exp_intop (val),
|
||
FALSE));
|
||
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. */
|
||
pop_stat_ptr ();
|
||
|
||
if (pe.FileAlignment >
|
||
pe.SectionAlignment)
|
||
{
|
||
einfo ("%P: warning, file alignment > section alignment.\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
gld_${EMULATION_NAME}_after_open (void)
|
||
{
|
||
after_open_default ();
|
||
|
||
/* 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(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 int
|
||
sort_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 = filename_cmp ((*ra)->input_section.section->owner->my_archive->filename,
|
||
(*rb)->input_section.section->owner->my_archive->filename);
|
||
if (i != 0)
|
||
return i;
|
||
|
||
i = filename_cmp ((*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 an
|
||
idata$6 section unless we are importing by ordinal,
|
||
so sort them to last to terminate the IAT
|
||
and HNT properly. if no reloc this one is import by ordinal
|
||
so 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 int
|
||
sort_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 have
|
||
to 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 information
|
||
generated correctly - the head of the list goes into dh.o, the tail into
|
||
dt.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 of
|
||
sorting 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 the
|
||
place_orphans routine to implement grouped sections. */
|
||
|
||
static void
|
||
sort_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 in
|
||
the same archive. In order to handle the case of
|
||
including a single archive multiple times, we sort
|
||
all the children by archive name and then by object
|
||
name. After sorting them, we re-thread the pointer
|
||
chain. */
|
||
|
||
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 last
|
||
character (not sure if this is really useful, but it
|
||
allows explicitly mentioning some \$ sections and letting
|
||
the 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 void
|
||
gld_${EMULATION_NAME}_before_allocation (void)
|
||
{
|
||
#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 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 (!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 them
|
||
into 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 Format
|
||
Specification 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 sections
|
||
which are not mentioned in the linker script. */
|
||
|
||
static lang_output_section_statement_type *
|
||
gld${EMULATION_NAME}_place_orphan (asection *s,
|
||
const char *secname,
|
||
int constraint)
|
||
{
|
||
char *output_secname, *ps;
|
||
lang_output_section_statement_type *os;
|
||
lang_statement_union_type *l;
|
||
|
||
if ((s->flags & SEC_ALLOC) == 0)
|
||
return NULL;
|
||
|
||
/* Don't process grouped sections unless doing a final link.
|
||
If they're marked as COMDAT sections, we don't want .text\$foo to
|
||
end up in .text and then have .text disappear because it's marked
|
||
link-once-discard. */
|
||
if (link_info.relocatable)
|
||
return NULL;
|
||
|
||
/* Everything from the '\$' on gets deleted so don't allow '\$' as the
|
||
first character. */
|
||
if (*secname == '\$')
|
||
einfo ("%P%F: section %s has '\$' as first character\n", secname);
|
||
if (strchr (secname + 1, '\$') == NULL)
|
||
return NULL;
|
||
|
||
/* Look up the output section. The Microsoft specs say sections names in
|
||
image files never contain a '\$'. Fortunately, lang_..._lookup creates
|
||
the 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, constraint, TRUE);
|
||
|
||
/* Find the '\$' wild statement for this section. We currently require the
|
||
linker script to explicitly mention "*(.foo\$)".
|
||
FIXME: ppcpe.sc has .CRT\$foo in the .rdata section. According to the
|
||
Microsoft 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 until
|
||
all such sections have been processed by us. The sorting is done by
|
||
sort_sections. */
|
||
lang_add_section (&l->wild_statement.children, s, NULL, os);
|
||
|
||
return os;
|
||
}
|
||
|
||
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)
|
||
return
|
||
EOF
|
||
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
|
||
echo ' ; else if (link_info.relocatable) return' >> e${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
|
||
|
||
fragment <<EOF
|
||
|
||
|
||
struct 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
|