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[PATCH] libdw: Add support for DWARF5/GCC5 DW_TAG_atomic_type.
- From: Mark Wielaard <mjw at redhat dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Mon, 09 Feb 2015 16:31:32 +0100
- Subject: [PATCH] libdw: Add support for DWARF5/GCC5 DW_TAG_atomic_type.
GCC5 adds support for the new C11 _Atomic DWARF5 DW_TAG_atomic_type
qualifier. Add it to dwarf.h and handle it in dwarf_peel_type.
http://dwarfstd.org/ShowIssue.php?issue=131112.1
Also documented at https://fedorahosted.org/elfutils/wiki/DwarfExtensions
Signed-off-by: Mark Wielaard <mjw@redhat.com>
---
libdw/ChangeLog | 6 ++++++
libdw/dwarf.h | 3 +++
libdw/dwarf_peel_type.c | 3 ++-
libdw/libdw.h | 3 ++-
4 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index d377937..3432557 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,9 @@
+2015-02-09 Mark Wielaard <mjw@redhat.com>
+
+ * dwarf.h: Add DW_TAG_atomic_type.
+ * libdw.h (dwarf_peel_type): Document DW_TAG_atomic_type.
+ * dwarf_peel_type.c (dwarf_peel_type): Handle DW_TAG_atomic_type.
+
2014-12-24 Mark Wielaard <mjw@redhat.com>
* dwarf_getsrc_die.c (dwarf_getsrc_die): Return the last line record
diff --git a/libdw/dwarf.h b/libdw/dwarf.h
index da8cf3a..a97a2c3 100644
--- a/libdw/dwarf.h
+++ b/libdw/dwarf.h
@@ -94,6 +94,9 @@ enum
DW_TAG_rvalue_reference_type = 0x42,
DW_TAG_template_alias = 0x43,
+ /* DWARF 5. */
+ DW_TAG_atomic_type = 0x47,
+
DW_TAG_lo_user = 0x4080,
DW_TAG_MIPS_loop = 0x4081,
diff --git a/libdw/dwarf_peel_type.c b/libdw/dwarf_peel_type.c
index a110bc5..9be838d 100644
--- a/libdw/dwarf_peel_type.c
+++ b/libdw/dwarf_peel_type.c
@@ -51,7 +51,8 @@ dwarf_peel_type (die, result)
while (tag == DW_TAG_typedef
|| tag == DW_TAG_const_type
|| tag == DW_TAG_volatile_type
- || tag == DW_TAG_restrict_type)
+ || tag == DW_TAG_restrict_type
+ || tag == DW_TAG_atomic_type)
{
Dwarf_Attribute attr_mem;
Dwarf_Attribute *attr = INTUSE (dwarf_attr_integrate) (die, DW_AT_type,
diff --git a/libdw/libdw.h b/libdw/libdw.h
index b2b2282..473e1a2 100644
--- a/libdw/libdw.h
+++ b/libdw/libdw.h
@@ -409,7 +409,8 @@ extern int dwarf_siblingof (Dwarf_Die *die, Dwarf_Die *result)
The current DWARF specification defines one type alias tag
(DW_TAG_typedef) and three qualifier type tags (DW_TAG_const_type,
- DW_TAG_volatile_type, DW_TAG_restrict_type). A future version of
+ DW_TAG_volatile_type, DW_TAG_restrict_type). DWARF5 defines one
+ other qualifier type tag (DW_TAG_atomic_type). A future version of
this function might peel other alias or qualifier type tags if a
future DWARF version or GNU extension defines other type aliases or
qualifier type tags that don't modify or change the structural
--
1.8.3.1