From 5f8ac7e7f634e6774204ba4a0ac566fbc39daa38 Mon Sep 17 00:00:00 2001
From: Steve Chamberlain <sac@cygnus>
Date: Thu, 31 Aug 1995 23:42:53 +0000
Subject: [PATCH] Thu Aug 31 16:37:07 1995  steve chamberlain 
 <sac@slash.cygnus.com>

	* ldemul.c (ldemul_parse_args): New.
	* ldemul.h (ld_emulation_xfer_struct): Add parse_args.
	* lexsup.c (all pe stuff): Moved into pe.em
	(parse_args): Call emulation arg parser.
	* emultempl/pe.em (parse_args): handle PE specfic args.
---
 ld/ChangeLog       |   8 +
 ld/emultempl/pe.em | 486 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 494 insertions(+)
 create mode 100644 ld/emultempl/pe.em

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 6914e7e0815..3ab38befeab 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,11 @@
+Thu Aug 31 16:37:07 1995  steve chamberlain  <sac@slash.cygnus.com>
+
+	* ldemul.c (ldemul_parse_args): New.
+	* ldemul.h (ld_emulation_xfer_struct): Add parse_args.
+	* lexsup.c (all pe stuff): Moved into pe.em
+	(parse_args): Call emulation arg parser.
+	* emultempl/pe.em (parse_args): handle PE specfic args.
+
 Thu Aug 31 17:01:37 1995  Ian Lance Taylor  <ian@cygnus.com>
 
 	* ldlang.c (lang_memory_region_lookup): Don't use the first region
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em
new file mode 100644
index 00000000000..9e9a590e95f
--- /dev/null
+++ b/ld/emultempl/pe.em
@@ -0,0 +1,486 @@
+# This shell script emits a C file. -*- C -*-
+# It does some substitutions.
+cat >e${EMULATION_NAME}.c <<EOF
+/* For WINDOWS_NT */
+/* The original file generated returned different default scripts depending
+   on whether certain switches were set, but these switches pertain to the
+   Linux system and that particular version of coff.  In the NT case, we
+   only determine if the subsystem is console or windows in order to select
+   the correct entry point by default. */ 
+  
+
+/* This file is part of GLD, the Gnu Linker.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "getopt.h"
+#include "ld.h"
+#include "config.h"
+#include "ld.h"
+#include "ldmain.h"
+#include "ldgram.h"
+#include "ldexp.h"
+#include "ldlang.h"
+#include "ldemul.h"
+#include "ldlex.h"
+#include "ldmisc.h"
+#include "ldctor.h"
+#include "ldfile.h"
+#include "coff/internal.h"
+#include "../bfd/libcoff.h"
+
+static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
+static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *isfile));
+
+
+static struct internal_extra_pe_aouthdr pe;
+static int dll;
+
+static void
+gld_${EMULATION_NAME}_before_parse()
+{
+  ldfile_output_architecture = bfd_arch_${ARCH};
+}
+
+
+/* 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 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},
+   {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__", 0x100000),
+  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),
+  0
+};
+
+
+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 ()
+{
+  int i;
+  static struct 
+    {
+      char *name ;
+      int value;
+    }
+  v[] =
+    {
+      {"native", BFD_PE_NATIVE},
+      {"windows",BFD_PE_WINDOWS},
+      {"console",BFD_PE_CONSOLE},
+      {"os2",BFD_PE_OS2},
+      {"posix", BFD_PE_POSIX},
+      {0,0}
+    };
+
+  for (i = 0; v[i].name; i++)
+    {
+      if (!strcmp (optarg, v[i].name)) 
+	{
+	  set_pe_name ("__subsystem__", v[i].value);
+	  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, 16));
+  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;
+{
+  char *begin_commit;
+  char *end;
+
+  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;
+  opterr = 0;
+  optc = getopt_long_only (argc, argv, "-", longopts, &longind);
+  opterr = prevopterr;
+  switch (optc)
+    {
+    default:
+      optind = prevoptind;
+      return 0;
+
+    case OPTION_BASE_FILE:
+      link_info.base_file = (PTR) fopen (optarg,"w");
+      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 ("__heap_reserve__", "__heap_commit__");
+      break;
+    case OPTION_STACK: 
+      set_pe_stack_heap ("__stack_reserve__", "__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_subsytem_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 1;
+}
+
+static void
+gld_${EMULATION_NAME}_set_symbols() 
+{
+
+  /* Run through and invent symbols for all the
+     names and insert the defaults. */
+  int j;
+
+  if (!init[IMAGEBASEOFF].inited)
+    init[IMAGEBASEOFF].value = init[DLLOFF].value
+      ? NT_DLL_IMAGE_BASE : NT_EXE_IMAGE_BASE;
+
+  for (j = 0; init[j].ptr; j++)
+    {
+      long val = init[j].value;
+      lang_add_assignment (exp_assop ('=' ,init[j].symbol, exp_intop (val)));
+      if (init[j].size == sizeof(short))
+	*(short *)init[j].ptr = val;
+      else if (init[j].size == sizeof(int))
+	*(int *)init[j].ptr = val;
+      else if (init[j].size == sizeof(long))
+	*(long *)init[j].ptr = val;
+      else	abort();
+    }
+
+  if (pe.FileAlignment >
+      pe.SectionAlignment)
+    {
+      einfo ("%P: warning, file alignment > section alignment.\n");
+    }
+}
+
+static void
+gld_${EMULATION_NAME}_after_open()
+{
+  /* Pass the wacky PE command line options into the output bfd */
+  struct internal_extra_pe_aouthdr *i;
+  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;
+
+}
+
+/* Callback function for qsort in sort_sections. */
+
+static int sfunc (a, b)
+void *a;
+void *b;
+{
+  lang_statement_union_type **ra = a;
+  lang_statement_union_type **rb = b;
+  return strcmp ((*ra)->input_section.ifile->filename,
+		 (*rb)->input_section.ifile->filename);
+}
+
+/* Sort the input sections of archives into filename order. */
+
+static void
+sort_sections (s)
+     lang_statement_union_type *s;
+{
+  for (; s ; s = s->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;
+
+	  /* Sort any children in the same archive.  Run through all
+	     the children of this wild statement, when an
+	     input_section in an archive is found, scan forward to
+	     find all input_sections which are in the same archive.
+	     Sort them by their filename and then re-thread the
+	     pointer chain. */
+
+	  while (*p)
+	    {
+	      lang_statement_union_type *start = *p;
+	      if (start->header.type != lang_input_section_enum
+		  || !start->input_section.ifile->the_bfd->my_archive)
+		p = &(start->header.next);
+	      else
+		{
+		  lang_statement_union_type **vec;
+		  lang_statement_union_type *end;
+		  lang_statement_union_type *np;
+		  int count;
+		  int i;
+
+		  for (end = start, count = 0;
+		       end && end->header.type == lang_input_section_enum
+		       && (end->input_section.ifile->the_bfd->my_archive
+			   == start->input_section.ifile->the_bfd->my_archive);
+		       end = end->next)
+		    count++;
+
+		  np = end;
+
+		  vec = (lang_statement_union_type **)
+		    alloca (count * sizeof (lang_statement_union_type *));
+
+		  for (end = start, i = 0; i < count; i++, end = end->next)
+		    vec[i] = end;
+
+		  qsort (vec, count, sizeof (vec[0]), sfunc);
+
+		  /* Fill in the next pointers again. */
+		  *p = vec[0];
+		  for (i = 0; i < count - 1; i++)
+		    vec[i]->header.next = vec[i + 1];
+		  vec[i]->header.next = np;
+		  p = &(vec[i]->header.next);
+		}
+	    }
+	}
+	break;
+      default:
+	break;
+      }
+}
+
+static void  
+gld_${EMULATION_NAME}_before_allocation()
+{
+  extern lang_statement_list_type *stat_ptr;
+  sort_sections (*stat_ptr);
+}
+
+static char *
+gld_${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_${EMULATION_NAME}_before_parse,
+  syslib_default,
+  hll_default,
+  after_parse_default,
+  gld_${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}",
+  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
+
-- 
2.30.2