aboutsummaryrefslogtreecommitdiff
path: root/gold/layout.h
diff options
context:
space:
mode:
authorCary Coutant <ccoutant@gmail.com>2018-06-22 09:27:39 -0700
committerCary Coutant <ccoutant@gmail.com>2018-06-22 09:52:00 -0700
commit6c04fd9b2fb4396c0189cb414ce598161ac8673e (patch)
tree8b3630b03edb8d663a592b472cae1292aad05e7c /gold/layout.h
parent8e7767e3f782c46451a548d708f5582669d7a6d7 (diff)
downloadgdb-6c04fd9b2fb4396c0189cb414ce598161ac8673e.zip
gdb-6c04fd9b2fb4396c0189cb414ce598161ac8673e.tar.gz
gdb-6c04fd9b2fb4396c0189cb414ce598161ac8673e.tar.bz2
Add support for .note.gnu.property sections.
elfcpp/ PR gold/22914 * elfcpp.h (NT_GNU_PROPERTY_TYPE_0): New note type. (GNU_PROPERTY_*): New Gnu property types. * x86_64.h (GNU_PROPERTY_X86_FEATURE_1_IBT) (GNU_PROPERTY_X86_FEATURE_1_SHSTK): New x86 feature bits. gold/ PR gold/22914 * layout.cc (Layout::Layout): Initialize gnu_properties_. (read_sized_value, write_sized_value): New functions. (Layout::layout_gnu_property): New method. (Layout::create_notes): Call create_gnu_properties_note. (Layout::create_gnu_properties_note): New method. * layout.h (Layout::layout_gnu_property): New method. (Layout::create_gnu_properties_note): New method. (Layout::Gnu_property, Layout::Gnu_properties): New types. (Layout::gnu_properties_): New data member. * object.cc (Sized_relobj_file::layout_gnu_property_section): New method. (Sized_relobj_file::do_layout): Handle .note.gnu.property sections. * object.h (Sized_relobj_file::layout_gnu_property_section): New method. * target.h (Target::merge_gnu_property): New method. (Target::do_merge_gnu_property): New virtual method. * x86_64.cc (Target_x86_64::do_merge_gnu_property): New method. * testsuite/Makefile.am (gnu_property_test): New test case. * testsuite/Makefile.in: Regenerate. * testsuite/gnu_property_a.S: New source file. * testsuite/gnu_property_b.S: New source file. * testsuite/gnu_property_c.S: New source file. * testsuite/gnu_property_main.c: New source file. * testsuite/gnu_property_test.sh: New test script.
Diffstat (limited to 'gold/layout.h')
-rw-r--r--gold/layout.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/gold/layout.h b/gold/layout.h
index 806f6e5..d71d291 100644
--- a/gold/layout.h
+++ b/gold/layout.h
@@ -693,6 +693,14 @@ class Layout
layout_gnu_stack(bool seen_gnu_stack, uint64_t gnu_stack_flags,
const Object*);
+ // Layout a .note.gnu.property section.
+ void
+ layout_gnu_property(unsigned int note_type,
+ unsigned int pr_type,
+ size_t pr_datasz,
+ const unsigned char* pr_data,
+ const Object* object);
+
// Add an Output_section_data to the layout. This is used for
// special sections like the GOT section. ORDER is where the
// section should wind up in the output segment. IS_RELRO is true
@@ -1061,6 +1069,10 @@ class Layout
create_note(const char* name, int note_type, const char* section_name,
size_t descsz, bool allocate, size_t* trailing_padding);
+ // Create a note section for gnu program properties.
+ void
+ create_gnu_properties_note();
+
// Create a note section for gold version.
void
create_gold_note();
@@ -1347,6 +1359,14 @@ class Layout
std::vector<Section_info> section_infos_;
};
+ // Program properties from .note.gnu.properties sections.
+ struct Gnu_property
+ {
+ size_t pr_datasz;
+ unsigned char* pr_data;
+ };
+ typedef std::map<unsigned int, Gnu_property> Gnu_properties;
+
// The number of input files, for sizing tables.
int number_of_input_files_;
// Information set by scripts or by command line options.
@@ -1473,6 +1493,8 @@ class Layout
Incremental_binary* incremental_base_;
// For incremental links, a list of free space within the file.
Free_list free_list_;
+ // Program properties.
+ Gnu_properties gnu_properties_;
};
// This task handles writing out data in output sections which is not