Major rewrite of how ld is configured. The major idea

	is to use shell scripts to generate everything.
	* generic.em replaces ldtemplate.
	* Other *.em files replace various *.c files.
	A *.em file is a shell script that generates the corresponding
	ld__*.c file that implements an emulation.  This is usually
	a straight 'cat' of a here-document, possibly with substitutions.
	* Script files (*.sc) are places by *.sc-sh scripts.
	Again, these are simple shell scripts that 'cat'
	here-documents, usually with some substitutions.
	The output a *.sc-sh is a script file.

1 files changed, 287 insertions, 0 deletions

diff --git a/ld/lnk960.em b/ld/lnk960.em
new file mode 100644
index 0000000..869e8a7
--- /dev/null
+++ b/ld/lnk960.em
@@ -0,0 +1,287 @@
+cat >ld__${EMULATION_NAME}.c <<EOF
+/* intel coff loader emulation specific stuff
+   Copyright (C) 1991 Free Software Foundation, Inc.
+   Written by Steve Chamberlain steve@cygnus.com
+
+This file is part of GLD, the Gnu Linker.
+
+GLD 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, or (at your option)
+any later version.
+
+GLD 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 GLD; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "bfd.h"
+#include "sysdep.h"
+
+/*#include "archures.h"*/
+#include "ld.h"
+#include "config.h"
+#include "ldemul.h"
+#include "ldmisc.h"
+#include "ldlang.h"
+#include "ldfile.h"
+
+extern  boolean lang_float_flag;
+extern bfd *output_bfd;
+
+
+
+extern enum bfd_architecture ldfile_output_architecture;
+extern unsigned long ldfile_output_machine;
+extern char *ldfile_output_machine_name;
+
+
+typedef struct lib_list {
+  char *name;
+  struct lib_list *next;
+} lib_list_type;
+
+static lib_list_type *hll_list;
+static lib_list_type **hll_list_tail = &hll_list;
+
+static lib_list_type *syslib_list;
+static lib_list_type **syslib_list_tail = &syslib_list;
+
+
+static void
+append(list, name)
+lib_list_type ***list;
+char *name;
+{
+  lib_list_type *element = 
+    (lib_list_type *)(ldmalloc(sizeof(lib_list_type)));
+
+  element->name = name;
+  element->next = (lib_list_type *)NULL;
+  **list = element;
+  *list = &element->next;
+
+}
+
+static boolean had_hll = false;
+static boolean had_hll_name = false;
+static void
+lnk960_hll(name)
+char *name;
+{
+  had_hll = true;
+  if (name != (char *)NULL) {
+    had_hll_name = true;
+    append(&hll_list_tail, name);
+  }
+}
+
+static void 
+lnk960_syslib(name)
+char *name;
+{
+  append(&syslib_list_tail,name);
+}
+
+
+
+#ifdef GNU960
+
+static void 
+lnk960_before_parse()
+{
+  static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
+  char **p;
+  char *env ;
+
+  for ( p = env_variables; *p; p++ ){
+    env =  (char *) getenv(*p);
+    if (env) {
+      ldfile_add_library_path(concat(env,"/lib/libcoff",""));
+    }
+  }
+
+  env= (char *) getenv("I960BASE");
+  if ( env ) {
+    ldfile_add_library_path(concat(env,"/lib",""));
+  }
+
+  ldfile_output_architecture = bfd_arch_i960;
+  ldfile_output_machine = bfd_mach_i960_core;
+}
+
+#else	/* not GNU960 */
+
+static void 
+lnk960_before_parse()
+{
+  char *name = getenv("I960BASE");
+
+  if (name == (char *)NULL) {
+    name = getenv("G960BASE");
+    if (name == (char *)NULL) {
+      einfo("%P%F I960BASE and G960BASE not set\n");
+    }
+  }
+
+
+  ldfile_add_library_path(concat(name,"/lib",""));
+  ldfile_output_architecture = bfd_arch_i960;
+  ldfile_output_machine = bfd_mach_i960_core;
+}
+
+#endif	/* GNU960 */
+
+
+static void
+add_on(list, search)
+lib_list_type *list;
+lang_input_file_enum_type search;
+{
+  while (list) {
+    lang_add_input_file(list->name,
+			search,
+			(char *)NULL);
+    list = list->next;
+  }
+}
+static void lnk960_after_parse()
+{
+
+  /* If there has been no arch, default to -KB */
+  if (ldfile_output_machine_name[0] ==0) {
+    ldfile_add_arch("KB");
+  }
+
+  /* if there has been no hll list then add our own */
+  
+  if(had_hll && !had_hll_name) {
+    append(&hll_list_tail,"cg");
+    if (ldfile_output_machine == bfd_mach_i960_ka_sa ||
+  	ldfile_output_machine == bfd_mach_i960_ca) {
+        {
+	  append(&hll_list_tail,"fpg");
+        }
+    }
+  }
+  
+  add_on(hll_list, lang_input_file_is_l_enum);
+  add_on(syslib_list, lang_input_file_is_search_file_enum);
+}
+
+static void
+lnk960_before_allocation()
+{
+}
+static void
+lnk960_after_allocation()
+{
+  extern ld_config_type config;
+  if (config.relocateable_output == false) {
+    lang_abs_symbol_at_end_of(".text","_etext");
+    lang_abs_symbol_at_end_of(".data","_edata");
+    lang_abs_symbol_at_beginning_of(".bss","_bss_start");
+    lang_abs_symbol_at_end_of(".bss","_end");
+  }
+}
+
+
+static struct
+ {
+   unsigned  long number;
+   char *name; 
+ }
+machine_table[] = {
+	bfd_mach_i960_core	,"CORE",
+	bfd_mach_i960_kb_sb	,"KB",
+	bfd_mach_i960_kb_sb	,"SB",
+	bfd_mach_i960_mc	,"MC",
+	bfd_mach_i960_xa	,"XA",
+	bfd_mach_i960_ca	,"CA",
+	bfd_mach_i960_ka_sa	,"KA",
+	bfd_mach_i960_ka_sa	,"SA",
+
+	bfd_mach_i960_core	,"core",
+	bfd_mach_i960_kb_sb	,"kb",
+	bfd_mach_i960_kb_sb	,"sb",
+	bfd_mach_i960_mc	,"mc",
+	bfd_mach_i960_xa	,"xa",
+	bfd_mach_i960_ca	,"ca",
+	bfd_mach_i960_ka_sa	,"ka",
+	bfd_mach_i960_ka_sa	,"sa",
+	0,(char *)NULL
+};
+
+static void
+lnk960_set_output_arch()
+{
+  /* Set the output architecture and machine if possible */
+  unsigned int i;
+  ldfile_output_machine = bfd_mach_i960_core;
+  for (i= 0; machine_table[i].name != (char*)NULL; i++) {
+    if (strcmp(ldfile_output_machine_name,machine_table[i].name)==0) {
+      ldfile_output_machine = machine_table[i].number;
+      break;
+    }
+  }
+  bfd_set_arch_mach(output_bfd, ldfile_output_architecture, ldfile_output_machine);
+}
+
+static char *
+lnk960_choose_target()
+{
+#ifdef GNU960
+
+  return bfd_make_targ_name(BFD_COFF_FORMAT, 0);
+
+#else
+
+  char *from_outside = getenv(TARGET_ENVIRON);
+  if (from_outside != (char *)NULL)
+    return from_outside;
+#ifdef LNK960_LITTLE
+  return "coff-Intel-little";
+#else
+  return "coff-Intel-big";
+#endif
+#endif
+
+}
+
+/* The default script if none is offered */
+static char *lnk960_script = 
+#include "lnk960.x"
+;
+
+
+static char *lnk960_script_relocateable = 
+#include "lnk960.xr"
+;
+
+static char *lnk960_get_script()
+{
+  extern ld_config_type config;
+  if (config.relocateable_output) {
+    return lnk960_script_relocateable;
+  }
+  return lnk960_script;
+}
+struct ld_emulation_xfer_struct ld_lnk960_emulation = 
+{
+  lnk960_before_parse,
+  lnk960_syslib,
+  lnk960_hll,
+  lnk960_after_parse,
+  lnk960_after_allocation,
+  lnk960_set_output_arch,
+  lnk960_choose_target,
+  lnk960_before_allocation,
+  lnk960_get_script,
+  "lnk960",
+  ""
+};
+EOF