* object.cc (Sized_relobj::layout_section): New function.

[deliverable/binutils-gdb.git] / gold / layout.cc

diff --git a/gold/layout.cc b/gold/layout.cc
index 37edbb6c8366645b9d886082bfbf279ba79ed27f..a4f17e535574b487eadf2559bbc5b6e1f2585f0b 100644 (file)
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -45,7 +45,9 @@
 #include "compressed_output.h"
 #include "reduced_debug_output.h"
 #include "reloc.h"
+#include "descriptors.h"
 #include "layout.h"
+#include "plugin.h"
 
 namespace gold
 {
@@ -205,6 +207,9 @@ bool
 Layout::include_section(Sized_relobj<size, big_endian>*, const char* name,
                        const elfcpp::Shdr<size, big_endian>& shdr)
 {
+  if (shdr.get_sh_flags() & elfcpp::SHF_EXCLUDE)
+    return false;
+
   switch (shdr.get_sh_type())
     {
     case elfcpp::SHT_NULL:
@@ -255,6 +260,14 @@ Layout::include_section(Sized_relobj<size, big_endian>*, const char* name,
               && !is_gdb_debug_section(name))
            return false;
        }
+      if (parameters->options().strip_lto_sections()
+          && !parameters->options().relocatable()
+          && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) == 0)
+        {
+          // Ignore LTO sections containing intermediate code.
+          if (is_prefix_of(".gnu.lto_", name))
+            return false;
+        }
       return true;
 
     default:
@@ -920,8 +933,7 @@ Layout::attach_allocated_section_to_segment(Output_section* os)
   if ((flags & elfcpp::SHF_TLS) != 0)
     {
       if (this->tls_segment_ == NULL)
-        this->tls_segment_ = this->make_output_segment(elfcpp::PT_TLS,
-                                                       seg_flags);
+       this->make_output_segment(elfcpp::PT_TLS, seg_flags);
       this->tls_segment_->add_output_section(os, seg_flags);
     }
 
@@ -931,8 +943,7 @@ Layout::attach_allocated_section_to_segment(Output_section* os)
     {
       gold_assert(seg_flags == (elfcpp::PF_R | elfcpp::PF_W));
       if (this->relro_segment_ == NULL)
-       this->relro_segment_ = this->make_output_segment(elfcpp::PT_GNU_RELRO,
-                                                        seg_flags);
+       this->make_output_segment(elfcpp::PT_GNU_RELRO, seg_flags);
       this->relro_segment_->add_output_section(os, seg_flags);
     }
 }
@@ -1507,14 +1518,14 @@ Layout::create_build_id()
       char buffer[uuidsz];
       memset(buffer, 0, uuidsz);
 
-      int descriptor = ::open("/dev/urandom", O_RDONLY);
+      int descriptor = open_descriptor(-1, "/dev/urandom", O_RDONLY);
       if (descriptor < 0)
        gold_error(_("--build-id=uuid failed: could not open /dev/urandom: %s"),
                   strerror(errno));
       else
        {
          ssize_t got = ::read(descriptor, buffer, uuidsz);
-         ::close(descriptor);
+         release_descriptor(descriptor, true);
          if (got < 0)
            gold_error(_("/dev/urandom: read failed: %s"), strerror(errno));
          else if (static_cast<size_t>(got) != uuidsz)
@@ -2754,6 +2765,8 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
     }
   if (parameters->options().shared() && this->has_static_tls())
     flags |= elfcpp::DF_STATIC_TLS;
+  if (parameters->options().origin())
+    flags |= elfcpp::DF_ORIGIN;
   odyn->add_constant(elfcpp::DT_FLAGS, flags);
 
   flags = 0;
@@ -2775,6 +2788,8 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
     flags &= ~(elfcpp::DF_1_INITFIRST
               | elfcpp::DF_1_NODELETE
               | elfcpp::DF_1_NOOPEN);
+  if (parameters->options().origin())
+    flags |= elfcpp::DF_1_ORIGIN;
   if (flags)
     odyn->add_constant(elfcpp::DT_FLAGS_1, flags);
 }
@@ -2945,6 +2960,14 @@ Layout::add_comdat(Relobj* object, unsigned int shndx,
   if (ins.first->second.group_)
     {
       // We've already seen a real section group with this signature.
+      // If the kept group is from a plugin object, and we're in
+      // the replacement phase, accept the new one as a replacement.
+      if (ins.first->second.object_ == NULL
+          && parameters->options().plugins()->in_replacement_phase())
+        {
+          ins.first->second = kept;
+          return true;
+        }
       return false;
     }
   else if (group)
@@ -2998,6 +3021,12 @@ Layout::make_output_segment(elfcpp::Elf_Word type, elfcpp::Elf_Word flags)
   gold_assert(!parameters->options().relocatable());
   Output_segment* oseg = new Output_segment(type, flags);
   this->segment_list_.push_back(oseg);
+
+  if (type == elfcpp::PT_TLS)
+    this->tls_segment_ = oseg;
+  else if (type == elfcpp::PT_GNU_RELRO)
+    this->relro_segment_ = oseg;
+
   return oseg;
 }