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From Cary Coutant: Count textrel with output sections rather than

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setting a flag as we add each reloc in the target code.
This commit is contained in:
Ian Lance Taylor
2007-11-15 23:46:46 +00:00
parent 02d2ba7402
commit 4f4c5f80c7
8 changed files with 151 additions and 89 deletions
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31
gold/layout.cc
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@@ -70,8 +70,7 @@ Layout::Layout(const General_options& options)
eh_frame_section_(NULL), output_file_size_(-1),
input_requires_executable_stack_(false),
input_with_gnu_stack_note_(false),
input_without_gnu_stack_note_(false),
have_textrel_(false)
input_without_gnu_stack_note_(false)
{
// Make space for more than enough segments for a typical file.
// This is just for efficiency--it's OK if we wind up needing more.
@@ -1618,13 +1617,27 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
odyn->add_string(elfcpp::DT_RPATH, rpath_val);
}
// Add a DT_FLAGS entry. We add it even if no flags are set so that
// post-link tools can easily modify these flags if desired.
unsigned int flags = 0;
if (this->have_textrel_)
flags |= elfcpp::DF_TEXTREL;
odyn->add_constant(elfcpp::DT_FLAGS, flags);
// Look for text segments that have dynamic relocations.
bool have_textrel = false;
for (Segment_list::const_iterator p = this->segment_list_.begin();
p != this->segment_list_.end();
++p)
{
if (((*p)->flags() & elfcpp::PF_W) == 0
&& (*p)->dynamic_reloc_count() > 0)
{
have_textrel = true;
break;
}
}
// Add a DT_FLAGS entry. We add it even if no flags are set so that
// post-link tools can easily modify these flags if desired.
unsigned int flags = 0;
if (have_textrel)
flags |= elfcpp::DF_TEXTREL;
odyn->add_constant(elfcpp::DT_FLAGS, flags);
}
// The mapping of .gnu.linkonce section names to real section names.