* configure.tgt (powerpc-*-macos*): New target.

	* emulparams/ppcmacos.sh: New file, PowerMac emulation.
	* Makefile.in (ALL_EMULATIONS): Add eppcmacos.o.
	(eppcmacos.c): New target.
	* mpw-eppcmacos.c: Update.
	* mpw-make.sed: Edit out attempts to use {GENSCRIPTS}.

3 files changed, 373 insertions, 35 deletions

diff --git a/ld/emulparams/ppcmacos.sh b/ld/emulparams/ppcmacos.sh
new file mode 100644
index 0000000..b6b800c
--- /dev/null
+++ b/ld/emulparams/ppcmacos.sh
@@ -0,0 +1,4 @@
+TEMPLATE_NAME=aix
+SCRIPT_NAME=aix
+OUTPUT_FORMAT="xcoff-powermac"
+ARCH=powerpc
diff --git a/ld/mpw-eppcmacos.c b/ld/mpw-eppcmacos.c
index 9bc9812..0febbe3 100644
--- a/ld/mpw-eppcmacos.c
+++ b/ld/mpw-eppcmacos.c
@@ -38,12 +38,18 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "ldmisc.h"
 #include "ldexp.h"
 #include "ldlang.h"
+#include "ldctor.h"
+#include "ldgram.h"
 
 static void gldppcmacos_before_parse PARAMS ((void));
 static int gldppcmacos_parse_args PARAMS ((int, char **));
+static void gldppcmacos_after_open PARAMS ((void));
 static void gldppcmacos_before_allocation PARAMS ((void));
 static void gldppcmacos_read_file PARAMS ((const char *, boolean));
 static void gldppcmacos_free PARAMS ((PTR));
+static void gldppcmacos_find_relocs
+  PARAMS ((lang_statement_union_type *));
+static void gldppcmacos_find_exp_assignment PARAMS ((etree_type *));
 static char *gldppcmacos_get_script PARAMS ((int *isfile));
 
 /* The file alignment required for each section.  */
@@ -66,7 +72,7 @@ static unsigned short modtype = ('1' << 8) | 'L';
    permitted).  */
 static int textro;
 
-/* Structure used to hold import or export file list.  */
+/* Structure used to hold import file list.  */
 
 struct filelist
 {
@@ -75,10 +81,20 @@ struct filelist
 };
 
 /* List of import files.  */
-struct filelist *import_files;
+static struct filelist *import_files;
 
-/* List of export files.  */
-struct filelist *export_files;
+/* List of export symbols read from the export files.  */
+
+struct export_symbol_list
+{
+  struct export_symbol_list *next;
+  const char *name;
+  boolean syscall;
+};
+
+static struct export_symbol_list *export_symbols;
+
+/* This routine is called before anything else is done.  */
 
 static void
 gldppcmacos_before_parse()
@@ -97,6 +113,7 @@ gldppcmacos_parse_args (argc, argv)
 {
   int prevoptind = optind;
   int prevopterr = opterr;
+  int indx;
   int longind;
   int optc;
   long val;
@@ -108,12 +125,15 @@ gldppcmacos_parse_args (argc, argv)
 #define OPTION_EROK (OPTION_ERNOTOK + 1)
 #define OPTION_EXPORT (OPTION_EROK + 1)
 #define OPTION_IMPORT (OPTION_EXPORT + 1)
-#define OPTION_MAXDATA (OPTION_IMPORT + 1)
+#define OPTION_LOADMAP (OPTION_IMPORT + 1)
+#define OPTION_MAXDATA (OPTION_LOADMAP + 1)
 #define OPTION_MAXSTACK (OPTION_MAXDATA + 1)
 #define OPTION_MODTYPE (OPTION_MAXSTACK + 1)
 #define OPTION_NOAUTOIMP (OPTION_MODTYPE + 1)
 #define OPTION_NOSTRCMPCT (OPTION_NOAUTOIMP + 1)
-#define OPTION_STRCMPCT (OPTION_NOSTRCMPCT + 1)
+#define OPTION_PD (OPTION_NOSTRCMPCT + 1)
+#define OPTION_PT (OPTION_PD + 1)
+#define OPTION_STRCMPCT (OPTION_PT + 1)
 
   static struct option longopts[] = {
     {"basis", no_argument, NULL, OPTION_IGNORE},
@@ -133,6 +153,8 @@ gldppcmacos_parse_args (argc, argv)
     {"bhalt", required_argument, NULL, OPTION_IGNORE},
     {"bI", required_argument, NULL, OPTION_IMPORT},
     {"bimport", required_argument, NULL, OPTION_IMPORT},
+    {"bl", required_argument, NULL, OPTION_LOADMAP},
+    {"bloadmap", required_argument, NULL, OPTION_LOADMAP},
     {"bmaxdata", required_argument, NULL, OPTION_MAXDATA},
     {"bmaxstack", required_argument, NULL, OPTION_MAXSTACK},
     {"bM", required_argument, NULL, OPTION_MODTYPE},
@@ -144,11 +166,14 @@ gldppcmacos_parse_args (argc, argv)
     {"bnostrcmpct", no_argument, NULL, OPTION_NOSTRCMPCT},
     {"bnotextro", no_argument, &textro, 0},
     {"bnro", no_argument, &textro, 0},
+    {"bpD", required_argument, NULL, OPTION_PD},
+    {"bpT", required_argument, NULL, OPTION_PT},
     {"bro", no_argument, &textro, 1},
     {"bS", required_argument, NULL, OPTION_MAXSTACK},
     {"bso", no_argument, NULL, OPTION_AUTOIMP},
     {"bstrcmpct", no_argument, NULL, OPTION_STRCMPCT},
     {"btextro", no_argument, &textro, 1},
+    {"static", no_argument, NULL, OPTION_NOAUTOIMP},
     {NULL, no_argument, NULL, 0}
   };
 
@@ -161,14 +186,17 @@ gldppcmacos_parse_args (argc, argv)
      -bnotypchk, -bnox, -bquiet, -bR, -brename, -breorder, -btypchk,
      -bx, -bX, -bxref.  */
 
-  /* If the first option starts with -b, change the first : to an =.
+  /* If the current option starts with -b, change the first : to an =.
      The AIX linker uses : to separate the option from the argument;
      changing it to = lets us treat it as a getopt option.  */
-  if (optind < argc && strncmp (argv[optind], "-b", 2) == 0)
+  indx = optind;
+  if (indx == 0)
+    indx = 1;
+  if (indx < argc && strncmp (argv[indx], "-b", 2) == 0)
     {
       char *s;
 
-      for (s = argv[optind]; *s != '\0'; s++)
+      for (s = argv[indx]; *s != '\0'; s++)
 	{
 	  if (*s == ':')
 	    {
@@ -245,6 +273,9 @@ gldppcmacos_parse_args (argc, argv)
       break;
 
     case OPTION_EXPORT:
+      gldppcmacos_read_file (optarg, false);
+      break;
+
     case OPTION_IMPORT:
       {
 	struct filelist *n;
@@ -253,16 +284,17 @@ gldppcmacos_parse_args (argc, argv)
 	n = (struct filelist *) xmalloc (sizeof (struct filelist));
 	n->next = NULL;
 	n->name = optarg;
-	if (optc == OPTION_EXPORT)
-	  flpp = &export_files;
-	else
-	  flpp = &import_files;
+	flpp = &import_files;
 	while (*flpp != NULL)
 	  flpp = &(*flpp)->next;
 	*flpp = n;
       }
       break;
 
+    case OPTION_LOADMAP:
+      config.map_filename = optarg;
+      break;
+
     case OPTION_MAXDATA:
       val = strtoul (optarg, &end, 0);
       if (*end != '\0')
@@ -301,6 +333,51 @@ gldppcmacos_parse_args (argc, argv)
       config.traditional_format = true;
       break;
 
+    case OPTION_PD:
+      /* This sets the page that the .data section is supposed to
+         start on.  The offset within the page should still be the
+         offset within the file, so we need to build an appropriate
+         expression.  */
+      val = strtoul (optarg, &end, 0);
+      if (*end != '\0')
+	einfo ("%P: warning: ignoring invalid -pD number %s\n", optarg);
+      else
+	{
+	  etree_type *t;
+
+	  t = exp_binop ('+',
+			 exp_intop (val),
+			 exp_binop ('&',
+				    exp_nameop (NAME, "."),
+				    exp_intop (0xfff)));
+	  t = exp_binop ('&',
+			 exp_binop ('+', t, exp_intop (7)),
+			 exp_intop (~ (bfd_vma) 7));
+	  lang_section_start (".data", t);
+	}
+      break;
+
+    case OPTION_PT:
+      /* This set the page that the .text section is supposed to start
+         on.  The offset within the page should still be the offset
+         within the file.  */
+      val = strtoul (optarg, &end, 0);
+      if (*end != '\0')
+	einfo ("%P: warning: ignoring invalid -pT number %s\n", optarg);
+      else
+	{
+	  etree_type *t;
+
+	  t = exp_binop ('+',
+			 exp_intop (val),
+			 exp_nameop (SIZEOF_HEADERS, NULL));
+	  t = exp_binop ('&',
+			 exp_binop ('+', t, exp_intop (7)),
+			 exp_intop (~ (bfd_vma) 7));
+	  lang_section_start (".text", t);
+	}
+      break;
+
     case OPTION_STRCMPCT:
       config.traditional_format = false;
       break;
@@ -309,6 +386,48 @@ gldppcmacos_parse_args (argc, argv)
   return 1;
 }
 
+/* This is called after the input files have been opened.  */
+
+static void
+gldppcmacos_after_open ()
+{
+  boolean r;
+  struct set_info *p;
+
+  /* Call ldctor_build_sets, after pretending that this is a
+     relocateable link.  We do this because AIX requires relocation
+     entries for all references to symbols, even in a final
+     executable.  */
+  r = link_info.relocateable;
+  link_info.relocateable = true;
+  ldctor_build_sets ();
+  link_info.relocateable = r;
+
+  /* For each set, record the size, so that the XCOFF backend can
+     output the correct csect length.  */
+  for (p = sets; p != (struct set_info *) NULL; p = p->next)
+    {
+      bfd_size_type size;
+
+      /* If the symbol is defined, we may have been invoked from
+	 collect, and the sets may already have been built, so we do
+	 not do anything.  */
+      if (p->h->type == bfd_link_hash_defined
+	  || p->h->type == bfd_link_hash_defweak)
+	continue;
+
+      if (p->reloc != BFD_RELOC_CTOR)
+	{
+	  /* Handle this if we need to.  */
+	  abort ();
+	}
+
+      size = (p->count + 2) * 4;
+      if (! bfd_xcoff_link_record_set (output_bfd, &link_info, p->h, size))
+	einfo ("%F%P: bfd_xcoff_link_record_set failed: %E\n");
+    }
+}
+
 /* This is called after the sections have been attached to output
    sections, but before any sizes or addresses have been set.  */
 
@@ -316,13 +435,30 @@ static void
 gldppcmacos_before_allocation ()
 {
   struct filelist *fl;
+  struct export_symbol_list *el;
   char *libpath;
+  asection *special_sections[6];
+  int i;
 
   /* Handle the import and export files, if any.  */
   for (fl = import_files; fl != NULL; fl = fl->next)
     gldppcmacos_read_file (fl->name, true);
-  for (fl = export_files; fl != NULL; fl = fl->next)
-    gldppcmacos_read_file (fl->name, false);
+  for (el = export_symbols; el != NULL; el = el->next)
+    {
+      struct bfd_link_hash_entry *h;
+
+      h = bfd_link_hash_lookup (link_info.hash, el->name, false, false, false);
+      if (h == NULL)
+	einfo ("%P%F: bfd_link_hash_lookup of export symbol failed: %E\n");
+      if (! bfd_xcoff_export_symbol (output_bfd, &link_info, h, el->syscall))
+	einfo ("%P%F: bfd_xcoff_export_symbol failed: %E\n");
+    }
+
+  /* Track down all relocations called for by the linker script (these
+     are typically constructor/destructor entries created by
+     CONSTRUCTORS) and let the backend know it will need to create
+     .loader relocs for them.  */
+  lang_for_each_statement (gldppcmacos_find_relocs);
 
   /* We need to build LIBPATH from the -L arguments.  If any -rpath
      arguments were used, though, we use -rpath instead, as a GNU
@@ -357,11 +493,118 @@ gldppcmacos_before_allocation ()
 					 maxstack, maxdata,
 					 gc ? true : false,
 					 modtype,
-					 textro ? true : false))
+					 textro ? true : false,
+					 special_sections))
     einfo ("%P%F: failed to set dynamic section sizes: %E\n");
+
+  /* Look through the special sections, and put them in the right
+     place in the link ordering.  This is especially magic.  */
+  for (i = 0; i < 6; i++)
+    {
+      asection *sec;
+      lang_output_section_statement_type *os;
+      lang_statement_union_type **pls;
+      lang_input_section_type *is;
+      const char *oname;
+      boolean start;
+
+      sec = special_sections[i];
+      if (sec == NULL)
+	continue;
+
+      /* Remove this section from the list of the output section.
+         This assumes we know what the script looks like.  */
+      is = NULL;
+      os = lang_output_section_find (sec->output_section->name);
+      if (os == NULL)
+	einfo ("%P%F: can't find output section %s\n",
+	       sec->output_section->name);
+      for (pls = &os->children.head; *pls != NULL; pls = &(*pls)->next)
+	{
+	  if ((*pls)->header.type == lang_input_section_enum
+	      && (*pls)->input_section.section == sec)
+	    {
+	      is = (lang_input_section_type *) *pls;
+	      *pls = (*pls)->next;
+	      break;
+	    }
+	  if ((*pls)->header.type == lang_wild_statement_enum)
+	    {
+	      lang_statement_union_type **pwls;
+
+	      for (pwls = &(*pls)->wild_statement.children.head;
+		   *pwls != NULL;
+		   pwls = &(*pwls)->next)
+		{
+		  if ((*pwls)->header.type == lang_input_section_enum
+		      && (*pwls)->input_section.section == sec)
+		    {
+		      is = (lang_input_section_type *) *pwls;
+		      *pwls = (*pwls)->next;
+		      break;
+		    }
+		}
+	      if (is != NULL)
+		break;
+	    }
+	}	
+
+      if (is == NULL)
+	einfo ("%P%F: can't find %s in output section\n",
+	       bfd_get_section_name (sec->owner, sec));
+
+      /* Now figure out where the section should go.  */
+      switch (i)
+	{
+	default: /* to avoid warnings */
+	case 0:
+	  /* _text */
+	  oname = ".text";
+	  start = true;
+	  break;
+	case 1:
+	  /* _etext */
+	  oname = ".text";
+	  start = false;
+	  break;
+	case 2:
+	  /* _data */
+	  oname = ".data";
+	  start = true;
+	  break;
+	case 3:
+	  /* _edata */
+	  oname = ".data";
+	  start = false;
+	  break;
+	case 4:
+	case 5:
+	  /* _end and end */
+	  oname = ".bss";
+	  start = false;
+	  break;
+	}
+
+      os = lang_output_section_find (oname);
+
+      if (start)
+	{
+	  is->header.next = os->children.head;
+	  os->children.head = (lang_statement_union_type *) is;
+	}
+      else
+	{
+	  is->header.next = NULL;
+	  lang_statement_append (&os->children,
+				 (lang_statement_union_type *) is,
+				 &is->header.next);
+	}
+    }
 }
 
-/* Read an import or export file.  */
+/* Read an import or export file.  For an import file, this is called
+   by the before_allocation emulation routine.  For an export file,
+   this is called by the parse_args emulation routine.  */
 
 static void
 gldppcmacos_read_file (filename, import)
@@ -539,27 +782,35 @@ gldppcmacos_read_file (filename, import)
 	    }
 	}
 
-      h = bfd_link_hash_lookup (link_info.hash, symname, false, false, true);
-      if (h == NULL || h->type == bfd_link_hash_new)
-	{
-	  /* We can just ignore attempts to import an unreferenced
-	     symbol.  */
-	  if (! import)
-	    einfo ("%X%s:%d: attempt to export undefined symbol %s\n",
-		   filename, lineno, symname);
-	}
-      else if (import)
+      if (! import)
 	{
-	  if (! bfd_xcoff_import_symbol (output_bfd, &link_info, h, address,
-					 imppath, impfile, impmember))
-	    einfo ("%X%s:%d: failed to import symbol %s: %E\n",
-		   filename, lineno, symname);
+	  struct export_symbol_list *n;
+
+	  ldlang_add_undef (symname);
+	  n = ((struct export_symbol_list *)
+	       xmalloc (sizeof (struct export_symbol_list)));
+	  n->next = export_symbols;
+	  n->name = buystring (symname);
+	  n->syscall = syscall;
+	  export_symbols = n;
 	}
       else
 	{
-	  if (! bfd_xcoff_export_symbol (output_bfd, &link_info, h, syscall))
-	    einfo ("%X%s:%d: failed to export symbol %s: %E\n",
-		   filename, lineno, symname);
+	  h = bfd_link_hash_lookup (link_info.hash, symname, false, false,
+				    true);
+	  if (h == NULL || h->type == bfd_link_hash_new)
+	    {
+	      /* We can just ignore attempts to import an unreferenced
+		 symbol.  */
+	    }
+	  else
+	    {
+	      if (! bfd_xcoff_import_symbol (output_bfd, &link_info, h,
+					     address, imppath, impfile,
+					     impmember))
+		einfo ("%X%s:%d: failed to import symbol %s: %E\n",
+		       filename, lineno, symname);
+	    }
 	}
 
       obstack_free (o, obstack_base (o));
@@ -588,6 +839,76 @@ gldppcmacos_free (p)
   free (p);
 }
 
+/* This is called by the before_allocation routine via
+   lang_for_each_statement.  It looks for relocations and assignments
+   to symbols.  */
+
+static void
+gldppcmacos_find_relocs (s)
+     lang_statement_union_type *s;
+{
+  if (s->header.type == lang_reloc_statement_enum)
+    {
+      lang_reloc_statement_type *rs;
+
+      rs = &s->reloc_statement;
+      if (rs->name == NULL)
+	einfo ("%F%P: only relocations against symbols are permitted\n");
+      if (! bfd_xcoff_link_count_reloc (output_bfd, &link_info, rs->name))
+	einfo ("%F%P: bfd_xcoff_link_count_reloc failed: %E\n");
+    }
+
+  if (s->header.type == lang_assignment_statement_enum)
+    gldppcmacos_find_exp_assignment (s->assignment_statement.exp);
+}
+
+/* Look through an expression for an assignment statement.  */
+
+static void
+gldppcmacos_find_exp_assignment (exp)
+     etree_type *exp;
+{
+  struct bfd_link_hash_entry *h;
+
+  switch (exp->type.node_class)
+    {
+    case etree_provide:
+      h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
+				false, false, false);
+      if (h == NULL)
+	break;
+      /* Fall through.  */
+    case etree_assign:
+      if (strcmp (exp->assign.dst, ".") != 0)
+	{
+	  if (! bfd_xcoff_record_link_assignment (output_bfd, &link_info,
+						  exp->assign.dst))
+	    einfo ("%P%F: failed to record assignment to %s: %E\n",
+		   exp->assign.dst);
+	}
+      gldppcmacos_find_exp_assignment (exp->assign.src);
+      break;
+
+    case etree_binary:
+      gldppcmacos_find_exp_assignment (exp->binary.lhs);
+      gldppcmacos_find_exp_assignment (exp->binary.rhs);
+      break;
+
+    case etree_trinary:
+      gldppcmacos_find_exp_assignment (exp->trinary.cond);
+      gldppcmacos_find_exp_assignment (exp->trinary.lhs);
+      gldppcmacos_find_exp_assignment (exp->trinary.rhs);
+      break;
+
+    case etree_unary:
+      gldppcmacos_find_exp_assignment (exp->unary.child);
+      break;
+
+    default:
+      break;
+    }
+}
+
 static char *
 gldppcmacos_get_script(isfile)
      int *isfile;
@@ -617,6 +938,8 @@ SECTIONS\n\
     *(.rw)\n\
     *(.sv)\n\
     *(.ua)\n\
+    . = ALIGN(4);\n\
+    CONSTRUCTORS\n\
     *(.ds)\n\
     *(.tc0)\n\
     *(.tc)\n\
@@ -657,6 +980,7 @@ SECTIONS\n\
     *(.rw)\n\
     *(.sv)\n\
     *(.ua)\n\
+    . = ALIGN(4);\n\
     *(.ds)\n\
     *(.tc0)\n\
     *(.tc)\n\
@@ -701,6 +1025,8 @@ SECTIONS\n\
     *(.rw)\n\
     *(.sv)\n\
     *(.ua)\n\
+    . = ALIGN(4);\n\
+    CONSTRUCTORS\n\
     *(.ds)\n\
     *(.tc0)\n\
     *(.tc)\n\
@@ -748,6 +1074,8 @@ SECTIONS\n\
     *(.rw)\n\
     *(.sv)\n\
     *(.ua)\n\
+    . = ALIGN(4);\n\
+    CONSTRUCTORS\n\
     *(.ds)\n\
     *(.tc0)\n\
     *(.tc)\n\
@@ -795,6 +1123,8 @@ SECTIONS\n\
     *(.rw)\n\
     *(.sv)\n\
     *(.ua)\n\
+    . = ALIGN(4);\n\
+    CONSTRUCTORS\n\
     *(.ds)\n\
     *(.tc0)\n\
     *(.tc)\n\
@@ -824,7 +1154,7 @@ struct ld_emulation_xfer_struct ld_ppcmacos_emulation =
   syslib_default,
   hll_default,
   after_parse_default,
-  after_open_default,
+  gldppcmacos_after_open,
   after_allocation_default,
   set_output_arch_default,
   ldemul_default_target,
diff --git a/ld/mpw-make.sed b/ld/mpw-make.sed
index f672da0..d26fdce 100644
--- a/ld/mpw-make.sed
+++ b/ld/mpw-make.sed
@@ -54,9 +54,13 @@
 /ldemul-list.h/s/"{s}"ldemul-list\.h/"{o}"ldemul-list.h/g
 /ldemul-list.h/s/^ldemul-list\.h/"{o}"ldemul-list.h/
 
+# Edit pathnames to emulation files.
 /"{s}"e.*\.c/s/"{s}"e\([-_a-z0-9]*\)\.c/"{o}"e\1.c/g
 /^e.*\.c/s/^e\([-_a-z0-9]*\)\.c/"{o}"e\1.c/
 
+# We can't run genscripts, so don't try.
+/{GENSCRIPTS}/s/{GENSCRIPTS}/null-command/
+
 #/sed.*free/,/> "{o}"ldlex.c.new/c\
 #	\	Catenate "{o}"lex.yy.c >"{o}"ldlex.c.new