From: Tom Tromey <tromey@redhat.com>
Date: Tue, 31 Dec 2013 13:52:33 +0000 (-0700)
Subject: relocate the entry point address when used
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=53eddfa6069cc556a22d388fbde0cc83beb91bfb;p=binutils-gdb.git

relocate the entry point address when used

This changes the entry point to be unrelocated in the objfile, and
instead applies the relocation when it is used.

2014-01-15  Tom Tromey  <tromey@redhat.com>

	* objfiles.c (entry_point_address_query): Relocate entry point
	address.
	(objfile_relocate1): Do not relocate entry point address.
	* objfiles.h (struct entry_info) <entry_point>: Update comment.
	<the_bfd_section_index>: New field.
	* symfile.c (init_entry_point_info): Find the entry point's
	section.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f1b12771e69..4259030d929 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2014-01-15  Tom Tromey  <tromey@redhat.com>
+
+	* objfiles.c (entry_point_address_query): Relocate entry point
+	address.
+	(objfile_relocate1): Do not relocate entry point address.
+	* objfiles.h (struct entry_info) <entry_point>: Update comment.
+	<the_bfd_section_index>: New field.
+	* symfile.c (init_entry_point_info): Find the entry point's
+	section.
+
 2014-01-15  Tom Tromey  <tromey@redhat.com>
 
 	* solib-frv.c (enable_break): Use entry_point_address_query.
diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index 9cc0054557e..a80d4c729c4 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -367,7 +367,9 @@ entry_point_address_query (CORE_ADDR *entry_p)
   if (symfile_objfile == NULL || !symfile_objfile->ei.entry_point_p)
     return 0;
 
-  *entry_p = symfile_objfile->ei.entry_point;
+  *entry_p = (symfile_objfile->ei.entry_point
+	      + ANOFFSET (symfile_objfile->section_offsets,
+			  symfile_objfile->ei.the_bfd_section_index));
 
   return 1;
 }
@@ -794,22 +796,6 @@ objfile_relocate1 (struct objfile *objfile,
      to be out of order.  */
   msymbols_sort (objfile);
 
-  if (objfile->ei.entry_point_p)
-    {
-      /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT
-	 only as a fallback.  */
-      struct obj_section *s;
-      s = find_pc_section (objfile->ei.entry_point);
-      if (s)
-	{
-	  int idx = gdb_bfd_section_index (objfile->obfd, s->the_bfd_section);
-
-	  objfile->ei.entry_point += ANOFFSET (delta, idx);
-	}
-      else
-        objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
-    }
-
   {
     int i;
 
diff --git a/gdb/objfiles.h b/gdb/objfiles.h
index c2b617754e8..620d7e8eb9e 100644
--- a/gdb/objfiles.h
+++ b/gdb/objfiles.h
@@ -101,9 +101,12 @@ struct objfile_data;
 
 struct entry_info
   {
-    /* The relocated value we should use for this objfile entry point.  */
+    /* The unrelocated value we should use for this objfile entry point.  */
     CORE_ADDR entry_point;
 
+    /* The index of the section in which the entry point appears.  */
+    int the_bfd_section_index;
+
     /* Set to 1 iff ENTRY_POINT contains a valid value.  */
     unsigned entry_point_p : 1;
   };
diff --git a/gdb/symfile.c b/gdb/symfile.c
index d863282c711..bd125524a79 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -894,7 +894,9 @@ init_entry_point_info (struct objfile *objfile)
 
   if (objfile->ei.entry_point_p)
     {
+      struct obj_section *osect;
       CORE_ADDR entry_point =  objfile->ei.entry_point;
+      int found;
 
       /* Make certain that the address points at real code, and not a
 	 function descriptor.  */
@@ -907,6 +909,25 @@ init_entry_point_info (struct objfile *objfile)
 	 symbol table.  */
       objfile->ei.entry_point
 	= gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point);
+
+      found = 0;
+      ALL_OBJFILE_OSECTIONS (objfile, osect)
+	{
+	  struct bfd_section *sect = osect->the_bfd_section;
+
+	  if (entry_point >= bfd_get_section_vma (objfile->obfd, sect)
+	      && entry_point < (bfd_get_section_vma (objfile->obfd, sect)
+				+ bfd_get_section_size (sect)))
+	    {
+	      objfile->ei.the_bfd_section_index
+		= gdb_bfd_section_index (objfile->obfd, sect);
+	      found = 1;
+	      break;
+	    }
+	}
+
+      if (!found)
+	objfile->ei.the_bfd_section_index = SECT_OFF_TEXT (objfile);
     }
 }