mirror of
https://github.com/darlinghq/darling-gdb.git
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520 lines
14 KiB
Plaintext
520 lines
14 KiB
Plaintext
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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cat >e${EMULATION_NAME}.c <<EOF
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/* For WINDOWS_NT */
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/* The original file generated returned different default scripts depending
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on whether certain switches were set, but these switches pertain to the
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Linux system and that particular version of coff. In the NT case, we
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only determine if the subsystem is console or windows in order to select
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the correct entry point by default. */
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/* This file is part of GLD, the Gnu Linker.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "getopt.h"
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#include "ld.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldgram.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldemul.h"
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#include "ldlex.h"
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#include "ldmisc.h"
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#include "ldctor.h"
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#include "ldfile.h"
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#include "coff/internal.h"
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#include "../bfd/libcoff.h"
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#define TARGET_IS_${EMULATION_NAME}
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static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
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static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *isfile));
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static struct internal_extra_pe_aouthdr pe;
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static int dll;
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static void
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gld_${EMULATION_NAME}_before_parse()
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{
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ldfile_output_architecture = bfd_arch_${ARCH};
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}
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/* Used for setting flags in the PE header. */
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#define OPTION_BASE_FILE (300 + 1)
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#define OPTION_DLL (OPTION_BASE_FILE + 1)
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#define OPTION_FILE_ALIGNMENT (OPTION_DLL + 1)
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#define OPTION_IMAGE_BASE (OPTION_FILE_ALIGNMENT + 1)
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#define OPTION_MAJOR_IMAGE_VERSION (OPTION_IMAGE_BASE + 1)
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#define OPTION_MAJOR_OS_VERSION (OPTION_MAJOR_IMAGE_VERSION + 1)
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#define OPTION_MAJOR_SUBSYSTEM_VERSION (OPTION_MAJOR_OS_VERSION + 1)
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#define OPTION_MINOR_IMAGE_VERSION (OPTION_MAJOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_MINOR_OS_VERSION (OPTION_MINOR_IMAGE_VERSION + 1)
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#define OPTION_MINOR_SUBSYSTEM_VERSION (OPTION_MINOR_OS_VERSION + 1)
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#define OPTION_SECTION_ALIGNMENT (OPTION_MINOR_SUBSYSTEM_VERSION + 1)
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#define OPTION_STACK (OPTION_SECTION_ALIGNMENT + 1)
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#define OPTION_SUBSYSTEM (OPTION_STACK + 1)
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#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
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static struct option longopts[] = {
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/* PE options */
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{"base-file", required_argument, NULL, OPTION_BASE_FILE},
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{"dll", no_argument, NULL, OPTION_DLL},
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{"file-alignment", required_argument, NULL, OPTION_FILE_ALIGNMENT},
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{"heap", required_argument, NULL, OPTION_HEAP},
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{"image-base", required_argument, NULL, OPTION_IMAGE_BASE},
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{"major-image-version", required_argument, NULL, OPTION_MAJOR_IMAGE_VERSION},
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{"major-os-version", required_argument, NULL, OPTION_MAJOR_OS_VERSION},
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{"major-subsystem-version", required_argument, NULL, OPTION_MAJOR_SUBSYSTEM_VERSION},
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{"minor-image-version", required_argument, NULL, OPTION_MINOR_IMAGE_VERSION},
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{"minor-os-version", required_argument, NULL, OPTION_MINOR_OS_VERSION},
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{"minor-subsystem-version", required_argument, NULL, OPTION_MINOR_SUBSYSTEM_VERSION},
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{"section-alignment", required_argument, NULL, OPTION_SECTION_ALIGNMENT},
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{"stack", required_argument, NULL, OPTION_STACK},
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{"subsystem", required_argument, NULL, OPTION_SUBSYSTEM},
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{NULL, no_argument, NULL, 0}
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};
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/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
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parameters which may be input from the command line */
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typedef struct {
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void *ptr;
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int size;
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int value;
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char *symbol;
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int inited;
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} definfo;
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#define D(field,symbol,def) {&pe.field,sizeof(pe.field), def, symbol,0}
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static definfo init[] =
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{
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/* imagebase must be first */
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#define IMAGEBASEOFF 0
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D(ImageBase,"__image_base__", NT_EXE_IMAGE_BASE),
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#define DLLOFF 1
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{&dll, sizeof(dll), 0, "__dll__"},
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D(SectionAlignment,"__section_alignment__", PE_DEF_SECTION_ALIGNMENT),
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D(FileAlignment,"__file_alignment__", PE_DEF_FILE_ALIGNMENT),
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D(MajorOperatingSystemVersion,"__major_os_version__", 4),
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D(MinorOperatingSystemVersion,"__minor_os_version__", 0),
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D(MajorImageVersion,"__major_image_version__", 1),
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D(MinorImageVersion,"__minor_image_version__", 0),
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D(MajorSubsystemVersion,"__major_subsystem_version__", 4),
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D(MinorSubsystemVersion,"__minor_subsystem_version__", 0),
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D(Subsystem,"__subsystem__", 3),
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D(SizeOfStackReserve,"__size_of_stack_reserve__", 0x100000),
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D(SizeOfStackCommit,"__size_of_stack_commit__", 0x1000),
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D(SizeOfHeapReserve,"__size_of_heap_reserve__", 0x100000),
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D(SizeOfHeapCommit,"__size_of_heap_commit__", 0x1000),
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D(LoaderFlags,"__loader_flags__", 0x0),
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0
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};
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static void
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set_pe_name (name, val)
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char *name;
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long val;
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{
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int i;
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/* Find the name and set it. */
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for (i = 0; init[i].ptr; i++)
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{
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if (strcmp (name, init[i].symbol) == 0)
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{
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init[i].value = val;
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init[i].inited = 1;
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return;
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}
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}
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abort();
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}
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static void
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set_pe_subsystem ()
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{
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int i;
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static struct
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{
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char *name ;
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int value;
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}
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v[] =
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{
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{"native", 1},
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{"windows",2},
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{"console",3},
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{"os2",5},
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{"posix", 7},
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{0,0}
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};
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for (i = 0; v[i].name; i++)
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{
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if (!strcmp (optarg, v[i].name))
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{
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set_pe_name ("__subsystem__", v[i].value);
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return;
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}
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}
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einfo ("%P%F: invalid subsystem type %s\n", optarg);
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}
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static void
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set_pe_value (name)
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char *name;
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{
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char *end;
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set_pe_name (name, strtoul (optarg, &end, 16));
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if (end == optarg)
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{
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einfo ("%P%F: invalid hex number for PE parameter '%s'\n", optarg);
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}
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optarg = end;
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}
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static void
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set_pe_stack_heap (resname, comname)
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char *resname;
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char *comname;
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{
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char *begin_commit;
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char *end;
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set_pe_value (resname);
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if (*optarg == ',')
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{
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optarg++;
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set_pe_value (comname);
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}
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else if (*optarg)
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{
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einfo ("%P%F: strange hex info for PE parameter '%s'\n", optarg);
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}
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}
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static int
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gld_${EMULATION_NAME}_parse_args(argc, argv)
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int argc;
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char **argv;
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{
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int longind;
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int optc;
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int prevoptind = optind;
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int prevopterr = opterr;
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int wanterror;
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static int lastoptind = -1;
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if (lastoptind != optind)
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opterr = 0;
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wanterror = opterr;
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lastoptind = optind;
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optc = getopt_long_only (argc, argv, "-", longopts, &longind);
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opterr = prevopterr;
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switch (optc)
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{
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default:
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if (wanterror)
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xexit (1);
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optind = prevoptind;
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return 0;
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case OPTION_BASE_FILE:
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link_info.base_file = (PTR) fopen (optarg, FOPEN_WB);
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if (link_info.base_file == NULL)
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{
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fprintf (stderr, "%s: Can't open base file %s\n",
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program_name, optarg);
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xexit (1);
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}
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break;
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/* PE options */
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case OPTION_HEAP:
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set_pe_stack_heap ("__heap_reserve__", "__heap_commit__");
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break;
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case OPTION_STACK:
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set_pe_stack_heap ("__stack_reserve__", "__stack_commit__");
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break;
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case OPTION_SUBSYSTEM:
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set_pe_subsystem ();
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break;
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case OPTION_MAJOR_OS_VERSION:
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set_pe_value ("__major_os_version__");
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break;
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case OPTION_MINOR_OS_VERSION:
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set_pe_value ("__minor_os_version__");
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break;
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case OPTION_MAJOR_SUBSYSTEM_VERSION:
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set_pe_value ("__major_subsystem_version__");
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break;
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case OPTION_MINOR_SUBSYSTEM_VERSION:
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set_pe_value ("__minor_subsystem_version__");
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break;
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case OPTION_MAJOR_IMAGE_VERSION:
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set_pe_value ("__major_image_version__");
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break;
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case OPTION_MINOR_IMAGE_VERSION:
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set_pe_value ("__minor_image_version__");
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break;
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case OPTION_FILE_ALIGNMENT:
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set_pe_value ("__file_alignment__");
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break;
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case OPTION_SECTION_ALIGNMENT:
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set_pe_value ("__section_alignment__");
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break;
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case OPTION_DLL:
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set_pe_name ("__dll__", 1);
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break;
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case OPTION_IMAGE_BASE:
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set_pe_value ("__image_base__");
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break;
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}
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return 1;
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}
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static void
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gld_${EMULATION_NAME}_set_symbols()
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{
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/* Run through and invent symbols for all the
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names and insert the defaults. */
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int j;
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lang_statement_list_type *save;
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if (!init[IMAGEBASEOFF].inited)
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init[IMAGEBASEOFF].value = init[DLLOFF].value
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? NT_DLL_IMAGE_BASE : NT_EXE_IMAGE_BASE;
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/* Glue the assignments into the abs section */
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save = stat_ptr;
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stat_ptr = &(abs_output_section->children);
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for (j = 0; init[j].ptr; j++)
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{
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long val = init[j].value;
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lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
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if (init[j].size == sizeof(short))
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*(short *)init[j].ptr = val;
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else if (init[j].size == sizeof(int))
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*(int *)init[j].ptr = val;
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else if (init[j].size == sizeof(long))
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*(long *)init[j].ptr = val;
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else abort();
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}
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/* Restore the pointer. */
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stat_ptr = save;
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if (pe.FileAlignment >
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pe.SectionAlignment)
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{
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einfo ("%P: warning, file alignment > section alignment.\n");
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}
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}
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static void
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gld_${EMULATION_NAME}_after_open()
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{
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/* Pass the wacky PE command line options into the output bfd */
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struct internal_extra_pe_aouthdr *i;
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if (!coff_data(output_bfd)->pe)
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{
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einfo ("%F%P: PE operations on non PE file.\n");
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}
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pe_data(output_bfd)->pe_opthdr = pe;
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pe_data(output_bfd)->dll = init[DLLOFF].value;
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}
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/* Callback function for qsort in sort_sections. */
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static int sfunc (a, b)
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void *a;
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void *b;
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{
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lang_statement_union_type **ra = a;
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lang_statement_union_type **rb = b;
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return strcmp ((*ra)->input_section.ifile->filename,
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(*rb)->input_section.ifile->filename);
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}
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/* Sort the input sections of archives into filename order. */
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static void
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sort_sections (s)
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lang_statement_union_type *s;
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{
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for (; s ; s = s->next)
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switch (s->header.type)
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{
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case lang_output_section_statement_enum:
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sort_sections (s->output_section_statement.children.head);
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break;
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case lang_wild_statement_enum:
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{
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lang_statement_union_type **p = &s->wild_statement.children.head;
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/* Sort any children in the same archive. Run through all
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the children of this wild statement, when an
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input_section in an archive is found, scan forward to
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find all input_sections which are in the same archive.
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Sort them by their filename and then re-thread the
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pointer chain. */
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while (*p)
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{
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lang_statement_union_type *start = *p;
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if (start->header.type != lang_input_section_enum
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|| !start->input_section.ifile->the_bfd->my_archive)
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p = &(start->header.next);
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else
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{
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lang_statement_union_type **vec;
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lang_statement_union_type *end;
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lang_statement_union_type *np;
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int count;
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int i;
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for (end = start, count = 0;
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end && end->header.type == lang_input_section_enum
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&& (end->input_section.ifile->the_bfd->my_archive
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== start->input_section.ifile->the_bfd->my_archive);
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end = end->next)
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count++;
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np = end;
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vec = (lang_statement_union_type **)
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alloca (count * sizeof (lang_statement_union_type *));
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for (end = start, i = 0; i < count; i++, end = end->next)
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vec[i] = end;
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qsort (vec, count, sizeof (vec[0]), sfunc);
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/* Fill in the next pointers again. */
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*p = vec[0];
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for (i = 0; i < count - 1; i++)
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vec[i]->header.next = vec[i + 1];
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vec[i]->header.next = np;
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p = &(vec[i]->header.next);
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}
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}
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}
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break;
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default:
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break;
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}
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}
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static void
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gld_${EMULATION_NAME}_before_allocation()
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{
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extern lang_statement_list_type *stat_ptr;
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#ifdef TARGET_IS_ppcpe
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/* Here we rummage through the found bfds to collect toc information */
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{
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LANG_FOR_EACH_INPUT_STATEMENT (is)
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{
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ppc_process_before_allocation(is->the_bfd, &link_info);
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}
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}
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/* We have seen it all. Allocate it, and carry on */
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ppc_allocate_toc_section (&link_info);
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#endif
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sort_sections (*stat_ptr);
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}
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static char *
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gld_${EMULATION_NAME}_get_script(isfile)
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int *isfile;
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EOF
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# Scripts compiled in.
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# sed commands to quote an ld script as a C string.
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sc="-f ${srcdir}/emultempl/stringify.sed"
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cat >>e${EMULATION_NAME}.c <<EOF
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{
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*isfile = 0;
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if (link_info.relocateable == true && config.build_constructors == true)
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return
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EOF
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sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
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echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
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echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
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echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
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echo ' ; else return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
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echo '; }' >> e${EMULATION_NAME}.c
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cat >>e${EMULATION_NAME}.c <<EOF
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struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
|
||
{
|
||
gld_${EMULATION_NAME}_before_parse,
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||
syslib_default,
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||
hll_default,
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||
after_parse_default,
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||
gld_${EMULATION_NAME}_after_open,
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||
after_allocation_default,
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||
set_output_arch_default,
|
||
ldemul_default_target,
|
||
gld_${EMULATION_NAME}_before_allocation,
|
||
gld_${EMULATION_NAME}_get_script,
|
||
"${EMULATION_NAME}",
|
||
"${OUTPUT_FORMAT}",
|
||
NULL, /* finish */
|
||
NULL, /* create output section statements */
|
||
NULL, /* open dynamic archive */
|
||
NULL, /* place orphan */
|
||
gld_${EMULATION_NAME}_set_symbols,
|
||
gld_${EMULATION_NAME}_parse_args
|
||
};
|
||
EOF
|
||
|