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[binutils-gdb] dwarf2read: Allow SEC_ALLOC sections to be located at address 0.


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b4e1fd615ae6582170a6bb62d6519d586bd5347e

commit b4e1fd615ae6582170a6bb62d6519d586bd5347e
Author: Kevin Buettner <kevinb@redhat.com>
Date:   Fri Jul 10 17:41:55 2015 -0700

    dwarf2read: Allow SEC_ALLOC sections to be located at address 0.
    
    GDB already allows statically initialized variables, located in
    SEC_LOAD sections, to be placed at address 0.  This change allows
    uninitialized variables (which are in SEC_ALLOC sections) to be placed
    address 0 as well.
    
    gdb/ChangeLog:
    
    	* dwarf2read.c (dwarf2_locate_sections): Allow has_section_at_zero
    	to be set for SEC_ALLOC sections too.

Diff:
---
 gdb/ChangeLog    | 5 +++++
 gdb/dwarf2read.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 3bd64ab..7f31ff5 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2015-07-18  Kevin Buettner  <kevinb@redhat.com>
+
+	* dwarf2read.c (dwarf2_locate_sections): Allow has_section_at_zero
+	to be set for SEC_ALLOC sections too.
+
 2015-07-17  Yao Qi  <yao.qi@linaro.org>
 
 	* Makefile.in (HFILES_NO_SRCDIR): Add
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 91c6a8f..f440956 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -2241,7 +2241,7 @@ dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames)
       dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp);
     }
 
-  if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD)
+  if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC))
       && bfd_section_vma (abfd, sectp) == 0)
     dwarf2_per_objfile->has_section_at_zero = 1;
 }


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