bfd/

	* elf32-spu.c: Include libiberty.h.
	(struct spu_link_hash_table): Add local_stire, overlay_fixed, reserved,
	non_ovly_stub, spu_elf_load_ovl_mgr, spu_elf_open_overlay_script,
	spu_elf_relink, auto_overlay fields.
	(AUTO_OVERLAY, AUTO_RELINK, OVERLAY_RODATA): Define.
	(needs_ovl_stub): Flip test so that call to non-function warning
	is emitted during relocate_section rather than earlier.
	(spu_elf_check_vma): Stash --auto-overlay parameters, and clear
	auto_overlay if no section exceeds local store.
	(struct call_info): Add count, max_depth, is_pasted fields.
	(struct function_info): Add rodata, last_caller, call_count,
	depth, new visit flags.
	(insert_callee): Increment call count.
	(copy_callee): New function.
	(mark_functions_via_relocs): Investigate all reloc types to count
	possible function pointer stubs for --auto-overlay.  Track
	last_caller and increment function call_count.
	(pasted_function): Insert a "call" into call info for pasted section.
	(remove_cycles): Track max depth of calls.  Don't emit call graph
	pruning warning for --auto-overlay.
	(build_call_tree): Don't transfer_calls for --auto-overlay.
	Adjust remove_cycles call.
	(sort_calls, sort_lib, sort_bfds): New functions.
	(struct _mos_param, struct _uos_param, struct _cl_param): New.
	(mark_overlay_section, unmark_overlay_section): New functions.
	(collect_lib_sectios, auto_ovl_lib_functions): New functions.
	(collect_overlays, find_pasted_call): New functions.
	(sum_stack): Deal with is_pasted "calls".  Exit before printing
	when --auto-overlay.
	(spu_elf_auto_overlay): New function.
	(spu_elf_final_link): Call spu_elf_auto_overlay.
	* elf32-spu.h (spu_elf_check_vma): Update prototype.
ld/
	* emultempl/spuelf.em (auto_overlay, auto_overlay_file,
	auto_overlay_fixed, auto_overlay_reserved, my_argc, my_argv): New vars.
	(spu_before_allocation): Warn on --auto-overlay and existing overlays.
	(struct tflist, clean_tmp): Move.
	(new_tmp_file): New function, extracted from..
	(embedded_spu_file): ..here.
	(spu_elf_open_overlay_script, spu_elf_relink): New function.
	(gld${EMULATION_NAME}_finish): Pass a bunch of --auto-overlay params.
	Warn on --auto-overlay and zero local store.
	(gld${EMULATION_NAME}_choose_target): New function to stash argv.
	(OPTION_SPU_AUTO_OVERLAY, OPTION_SPU_AUTO_RELINK,
	OPTION_SPU_OVERLAY_RODATA, OPTION_SPU_FIXED_SPACE,
	OPTION_SPU_RESERVED_SPACE, OPTION_SPU_NO_AUTO_OVERLAY): Define.
	(PARSE_AND_LIST_LONGOPTS): Add entries for new options.
	(PARSE_AND_LIST_OPTIONS): Likewise.
	(PARSE_AND_LIST_ARGS_CASES): Likewise.
	(LDEMUL_CHOOSE_TARGET): Define.

2 files changed, 204 insertions, 33 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 6a9fb95..4ffbd56 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,23 @@
+2008-04-08  Alan Modra  <amodra@bigpond.net.au>
+
+	* emultempl/spuelf.em (auto_overlay, auto_overlay_file,
+	auto_overlay_fixed, auto_overlay_reserved, my_argc, my_argv): New vars.
+	(spu_before_allocation): Warn on --auto-overlay and existing overlays.
+	(struct tflist, clean_tmp): Move.
+	(new_tmp_file): New function, extracted from..
+	(embedded_spu_file): ..here.
+	(spu_elf_open_overlay_script, spu_elf_relink): New function.
+	(gld${EMULATION_NAME}_finish): Pass a bunch of --auto-overlay params.
+	Warn on --auto-overlay and zero local store.
+	(gld${EMULATION_NAME}_choose_target): New function to stash argv.
+	(OPTION_SPU_AUTO_OVERLAY, OPTION_SPU_AUTO_RELINK,
+	OPTION_SPU_OVERLAY_RODATA, OPTION_SPU_FIXED_SPACE,
+	OPTION_SPU_RESERVED_SPACE, OPTION_SPU_NO_AUTO_OVERLAY): Define.
+	(PARSE_AND_LIST_LONGOPTS): Add entries for new options.
+	(PARSE_AND_LIST_OPTIONS): Likewise.
+	(PARSE_AND_LIST_ARGS_CASES): Likewise.
+	(LDEMUL_CHOOSE_TARGET): Define.
+
 2008-04-03  Kai Tietz  <kai.tietz@onevision.com>
 
 	PR ld/6026
diff --git a/ld/emultempl/spuelf.em b/ld/emultempl/spuelf.em
index 3a8cf28..ebaecdb 100644
--- a/ld/emultempl/spuelf.em
+++ b/ld/emultempl/spuelf.em
@@ -45,6 +45,14 @@ static int emit_stack_syms = 0;
 static bfd_vma local_store_lo = 0;
 static bfd_vma local_store_hi = 0x3ffff;
 
+/* Control --auto-overlay feature.  */
+static int auto_overlay = 0;
+static char *auto_overlay_file = 0;
+static unsigned int auto_overlay_fixed = 0;
+static unsigned int auto_overlay_reserved = 0;
+int my_argc;
+char **my_argv;
+
 static const char ovl_mgr[] = {
 EOF
 
@@ -202,6 +210,12 @@ spu_before_allocation (void)
 	{
 	  int ret;
 
+	  if (auto_overlay != 0)
+	    {
+	      einfo ("%P: --auto-overlay ignored with user overlay script\n");
+	      auto_overlay = 0;
+	    }
+
 	  ret = spu_elf_size_stubs (&link_info,
 				    spu_place_special_section,
 				    non_overlay_stubs);
@@ -218,6 +232,83 @@ spu_before_allocation (void)
   gld${EMULATION_NAME}_before_allocation ();
 }
 
+struct tflist {
+  struct tflist *next;
+  char name[9];
+};
+
+static struct tflist *tmp_file_list;
+
+static void clean_tmp (void)
+{
+  for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
+    unlink (tmp_file_list->name);
+}
+
+static int
+new_tmp_file (char **fname)
+{
+  struct tflist *tf;
+  int fd;
+
+  if (tmp_file_list == NULL)
+    atexit (clean_tmp);
+  tf = xmalloc (sizeof (*tf));
+  tf->next = tmp_file_list;
+  tmp_file_list = tf;
+  memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
+  *fname = tf->name;
+#ifdef HAVE_MKSTEMP
+  fd = mkstemp (*fname);
+#else
+  *fname = mktemp (*fname);
+  if (*fname == NULL)
+    return -1;
+  fd = open (fname, O_RDWR | O_CREAT | O_EXCL, 0600);
+#endif
+  return fd;
+}
+
+static FILE *
+spu_elf_open_overlay_script (void)
+{
+  FILE *script = NULL;
+
+  if (auto_overlay_file == NULL)
+    {
+      int fd = new_tmp_file (&auto_overlay_file);
+      if (fd == -1)
+	goto file_err;
+      script = fdopen (fd, "w");
+    }
+  else
+    script = fopen (auto_overlay_file, "w");
+
+  if (script == NULL)
+    {
+    file_err:
+      einfo ("%F%P: can not open script: %E\n");
+    }
+  return script;
+}
+
+static void
+spu_elf_relink (void)
+{
+  char **argv = xmalloc ((my_argc + 5) * sizeof (*argv));
+
+  memcpy (argv, my_argv, my_argc * sizeof (*argv));
+  argv[my_argc++] = "--no-auto-overlay";
+  if (tmp_file_list->name == auto_overlay_file)
+    argv[my_argc++] = auto_overlay_file;
+  argv[my_argc++] = "-T";
+  argv[my_argc++] = auto_overlay_file;
+  argv[my_argc] = 0;
+  execvp (argv[0], (char *const *) argv);
+  perror (argv[0]);
+  _exit (127);
+}
+
 /* Final emulation specific call.  */
 
 static void
@@ -235,10 +326,17 @@ gld${EMULATION_NAME}_finish (void)
         {
 	  asection *s;
 
-	  s = spu_elf_check_vma (&link_info, local_store_lo, local_store_hi);
-	  if (s != NULL)
+	  s = spu_elf_check_vma (&link_info, auto_overlay,
+				 local_store_lo, local_store_hi,
+				 auto_overlay_fixed, auto_overlay_reserved,
+				 spu_elf_load_ovl_mgr,
+				 spu_elf_open_overlay_script,
+				 spu_elf_relink);
+	  if (s != NULL && !auto_overlay)
 	    einfo ("%X%P: %A exceeds local store range\n", s);
 	}
+      else if (auto_overlay)
+	einfo ("%P: --auto-overlay ignored with zero local store range\n");
 
       if (!spu_elf_build_stubs (&link_info,
 				emit_stub_syms || link_info.emitrelocations))
@@ -248,6 +346,14 @@ gld${EMULATION_NAME}_finish (void)
   finish_default ();
 }
 
+static char *
+gld${EMULATION_NAME}_choose_target (int argc, char *argv[])
+{
+  my_argc = argc;
+  my_argv = argv;
+  return ldemul_default_target (argc, argv);
+}
+
 EOF
 
 if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
@@ -256,19 +362,6 @@ if grep -q 'ld_elf.*ppc.*_emulation' ldemul-list.h; then
 #include <fcntl.h>
 #include <sys/wait.h>
 
-struct tflist {
-  struct tflist *next;
-  char name[9];
-};
-
-static struct tflist *tmp_file_list;
-
-static void clean_tmp (void)
-{
-  for (; tmp_file_list != NULL; tmp_file_list = tmp_file_list->next)
-    unlink (tmp_file_list->name);
-}
-
 static const char *
 base_name (const char *path)
 {
@@ -302,7 +395,6 @@ embedded_spu_file (lang_input_statement_type *entry, const char *flags)
   const char *cmd[6];
   const char *sym;
   char *handle, *p;
-  struct tflist *tf;
   char *oname;
   int fd;
   pid_t pid;
@@ -326,22 +418,7 @@ embedded_spu_file (lang_input_statement_type *entry, const char *flags)
     if (!(ISALNUM (*p) || *p == '$' || *p == '.'))
       *p = '_';
 
-  if (tmp_file_list == NULL)
-    atexit (clean_tmp);
-  tf = xmalloc (sizeof (*tf));
-  tf->next = tmp_file_list;
-  tmp_file_list = tf;
-  oname = tf->name;
-  memcpy (tf->name, "ldXXXXXX", sizeof (tf->name));
-
-#ifdef HAVE_MKSTEMP
-  fd = mkstemp (oname);
-#else
-  oname = mktemp (oname);
-  if (oname == NULL)
-    return FALSE;
-  fd = open (oname, O_RDWR | O_CREAT | O_EXCL, 0600);
-#endif
+  fd = new_tmp_file (&oname);
   if (fd == -1)
     return FALSE;
   close (fd);
@@ -440,6 +517,12 @@ PARSE_AND_LIST_PROLOGUE='
 #define OPTION_SPU_LOCAL_STORE		(OPTION_SPU_NON_OVERLAY_STUBS + 1)
 #define OPTION_SPU_STACK_ANALYSIS	(OPTION_SPU_LOCAL_STORE + 1)
 #define OPTION_SPU_STACK_SYMS		(OPTION_SPU_STACK_ANALYSIS + 1)
+#define OPTION_SPU_AUTO_OVERLAY		(OPTION_SPU_STACK_SYMS + 1)
+#define OPTION_SPU_AUTO_RELINK		(OPTION_SPU_AUTO_OVERLAY + 1)
+#define OPTION_SPU_OVERLAY_RODATA	(OPTION_SPU_AUTO_RELINK + 1)
+#define OPTION_SPU_FIXED_SPACE		(OPTION_SPU_OVERLAY_RODATA + 1)
+#define OPTION_SPU_RESERVED_SPACE	(OPTION_SPU_FIXED_SPACE + 1)
+#define OPTION_SPU_NO_AUTO_OVERLAY	(OPTION_SPU_RESERVED_SPACE + 1)
 '
 
 PARSE_AND_LIST_LONGOPTS='
@@ -450,6 +533,12 @@ PARSE_AND_LIST_LONGOPTS='
   { "local-store", required_argument, NULL, OPTION_SPU_LOCAL_STORE },
   { "stack-analysis", no_argument, NULL, OPTION_SPU_STACK_ANALYSIS },
   { "emit-stack-syms", no_argument, NULL, OPTION_SPU_STACK_SYMS },
+  { "auto-overlay", optional_argument, NULL, OPTION_SPU_AUTO_OVERLAY },
+  { "auto-relink", no_argument, NULL, OPTION_SPU_AUTO_RELINK },
+  { "overlay-rodata", no_argument, NULL, OPTION_SPU_OVERLAY_RODATA },
+  { "fixed-space", required_argument, NULL, OPTION_SPU_FIXED_SPACE },
+  { "reserved-space", required_argument, NULL, OPTION_SPU_RESERVED_SPACE },
+  { "no-auto-overlay", optional_argument, NULL, OPTION_SPU_NO_AUTO_OVERLAY },
 '
 
 PARSE_AND_LIST_OPTIONS='
@@ -460,7 +549,14 @@ PARSE_AND_LIST_OPTIONS='
   --extra-overlay-stubs       Add stubs on all calls out of overlay regions.\n\
   --local-store=lo:hi         Valid address range.\n\
   --stack-analysis            Estimate maximum stack requirement.\n\
-  --emit-stack-syms           Add sym giving stack needed for each func.\n"
+  --emit-stack-syms           Add sym giving stack needed for each func.\n\
+  --auto-overlay [=filename]  Create an overlay script in filename if\n\
+                              executable does not fit in local store.\n\
+  --auto-relink               Rerun linker using auto-overlay script.\n\
+  --overlay-rodata            Place read-only data with associated function\n\
+                              code in overlays.\n\
+  --fixed-space=bytes         Local store for non-overlay code and data.\n\
+  --reserved-space=bytes      Local store for stack and heap.\n"
 		   ));
 '
 
@@ -502,8 +598,63 @@ PARSE_AND_LIST_ARGS_CASES='
     case OPTION_SPU_STACK_SYMS:
       emit_stack_syms = 1;
       break;
+
+    case OPTION_SPU_AUTO_OVERLAY:
+      auto_overlay |= 1;
+      if (optarg != NULL)
+	{
+	  auto_overlay_file = optarg;
+	  break;
+	}
+      /* Fall thru */
+
+    case OPTION_SPU_AUTO_RELINK:
+      auto_overlay |= 2;
+      break;
+
+    case OPTION_SPU_OVERLAY_RODATA:
+      auto_overlay |= 4;
+      break;
+
+    case OPTION_SPU_FIXED_SPACE:
+      {
+	char *end;
+	auto_overlay_fixed = strtoul (optarg, &end, 0);
+	if (*end != 0)
+	  einfo (_("%P%F: invalid --fixed-space value `%s'\''\n"), optarg);
+      }
+      break;
+
+    case OPTION_SPU_RESERVED_SPACE:
+      {
+	char *end;
+	auto_overlay_reserved = strtoul (optarg, &end, 0);
+	if (*end != 0)
+	  einfo (_("%P%F: invalid --reserved-space value `%s'\''\n"), optarg);
+      }
+      break;
+
+    case OPTION_SPU_NO_AUTO_OVERLAY:
+      auto_overlay = 0;
+      if (optarg != NULL)
+	{
+	  struct tflist *tf;
+	  size_t len;
+
+	  if (tmp_file_list == NULL)
+	    atexit (clean_tmp);
+
+	  len = strlen (optarg) + 1;
+	  tf = xmalloc (sizeof (*tf) - sizeof (tf->name) + len);
+	  memcpy (tf->name, optarg, len);
+	  tf->next = tmp_file_list;
+	  tmp_file_list = tf;
+	  break;
+	}
+      break;
 '
 
 LDEMUL_AFTER_OPEN=spu_after_open
 LDEMUL_BEFORE_ALLOCATION=spu_before_allocation
 LDEMUL_FINISH=gld${EMULATION_NAME}_finish
+LDEMUL_CHOOSE_TARGET=gld${EMULATION_NAME}_choose_target