From: Joel Brobecker <brobecker@gnat.com>
Date: Fri, 10 May 2013 12:55:13 +0000 (+0000)
Subject: AIX: wrong address for shared object's .bss section
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=060cfbef397769f935df461cb90d237c0783045a;p=binutils-gdb.git

AIX: wrong address for shared object's .bss section

gdb/ChangeLog:

        * solib-aix.c (solib_aix_relocate_section_addresses):
        For the .bss section action, apply the same offset as
        the .data section.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7ee965a2049..9f7b97228da 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2013-05-10  Joel Brobecker  <brobecker@adacore.com>
+
+	* solib-aix.c (solib_aix_relocate_section_addresses):
+	For the .bss section action, apply the same offset as
+	the .data section.
+
 2013-05-10  Joel Brobecker  <brobecker@adacore.com>
 
 	PR tdep/15420:
diff --git a/gdb/solib-aix.c b/gdb/solib-aix.c
index 9fa5de9f6f5..4672b588ce3 100644
--- a/gdb/solib-aix.c
+++ b/gdb/solib-aix.c
@@ -411,7 +411,21 @@ solib_aix_relocate_section_addresses (struct so_list *so,
     }
   else if (strcmp (section_name, ".bss") == 0)
     {
-      sec->addr = bfd_section_vma (abfd, bfd_sect) + info->data_addr;
+      /* The information provided by the loader does not include
+	 the address of the .bss section, but we know that it gets
+	 relocated by the same offset as the .data section.  So,
+	 compute the relocation offset for the .data section, and
+	 apply it to the .bss section as well.  If the .data section
+	 is not defined (which seems highly unlikely), do our best
+	 by assuming no relocation.  */
+      struct bfd_section *data_sect
+	= bfd_get_section_by_name (abfd, ".data");
+      CORE_ADDR data_offset = 0;
+
+      if (data_sect != NULL)
+	data_offset = info->data_addr - bfd_section_vma (abfd, data_sect);
+
+      sec->addr = bfd_section_vma (abfd, bfd_sect) + data_offset;
       sec->addr += solib_aix_bss_data_overlap (abfd);
       sec->endaddr = sec->addr + bfd_section_size (abfd, bfd_sect);
     }