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authorRoland McGrath <roland@gnu.org>2013-08-27 21:49:48 +0000
committerRoland McGrath <roland@gnu.org>2013-08-27 21:49:48 +0000
commiteb426534c3f150e77ebceba75facd2f49441d2fd (patch)
treeaaed32893651907607db05012db5d6b772d596de /gold/layout.cc
parent69d751e3c12a127ed2313a94690081f9f813316c (diff)
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* output.cc (Output_segment::set_section_addresses): Take new Target* argument. If target->isolate_execinstr() and the segment is executable and starts at a target->abi_pagesize() boundary, pad its end out to a target->abi_pagesize() boundary with code fill. * output.h (Output_segment::set_section_addresses): Update decl. * layout.h (Layout::check_output_data_for_reset_values): Take new argument RELAX_OUTPUTS. (Layout): New member relax_output_list_. (Layout::add_relax_output): New method. * layout.cc (Layout::Layout): Update constructor. (Layout::reset_relax_output): New method. (Layout::clean_up_after_relaxation): Call it. (Layout::prepare_for_relaxation): Update caller. (Layout::set_segment_offsets): Update callers of set_section_addresses. Call reset_relax_output before re-processing segments for isolate_execinstr case. (Layout::write_data): Handle relax_output_list_. (Layout::Relaxation_debug_check::check_output_data_for_reset_values): Take new argument RELAX_OUTPUTS. Assert it's an empty collection.
Diffstat (limited to 'gold/layout.cc')
-rw-r--r--gold/layout.cc42
1 files changed, 36 insertions, 6 deletions
diff --git a/gold/layout.cc b/gold/layout.cc
index 07dbc9b..38fd272 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -293,7 +293,8 @@ Hash_task::is_runnable()
void
Layout::Relaxation_debug_check::check_output_data_for_reset_values(
const Layout::Section_list& sections,
- const Layout::Data_list& special_outputs)
+ const Layout::Data_list& special_outputs,
+ const Layout::Data_list& relax_outputs)
{
for(Layout::Section_list::const_iterator p = sections.begin();
p != sections.end();
@@ -304,6 +305,8 @@ Layout::Relaxation_debug_check::check_output_data_for_reset_values(
p != special_outputs.end();
++p)
gold_assert((*p)->address_and_file_offset_have_reset_values());
+
+ gold_assert(relax_outputs.empty());
}
// Save information of SECTIONS for checking later.
@@ -428,6 +431,7 @@ Layout::Layout(int number_of_input_files, Script_options* script_options)
section_list_(),
unattached_section_list_(),
special_output_list_(),
+ relax_output_list_(),
section_headers_(NULL),
tls_segment_(NULL),
relro_segment_(NULL),
@@ -2341,6 +2345,20 @@ Layout::clean_up_after_relaxation()
++p)
delete *p;
this->script_output_section_data_list_.clear();
+
+ // Special-case fill output objects are recreated each time through
+ // the relaxation loop.
+ this->reset_relax_output();
+}
+
+void
+Layout::reset_relax_output()
+{
+ for (Data_list::const_iterator p = this->relax_output_list_.begin();
+ p != this->relax_output_list_.end();
+ ++p)
+ delete *p;
+ this->relax_output_list_.clear();
}
// Prepare for relaxation.
@@ -2363,7 +2381,8 @@ Layout::prepare_for_relaxation()
if (is_debugging_enabled(DEBUG_RELAXATION))
this->relaxation_debug_check_->check_output_data_for_reset_values(
- this->section_list_, this->special_output_list_);
+ this->section_list_, this->special_output_list_,
+ this->relax_output_list_);
// Also enable recording of output section data from scripts.
this->record_output_section_data_from_script_ = true;
@@ -3540,7 +3559,8 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
unsigned int shndx_hold = *pshndx;
bool has_relro = false;
- uint64_t new_addr = (*p)->set_section_addresses(this, false, addr,
+ uint64_t new_addr = (*p)->set_section_addresses(target, this,
+ false, addr,
&increase_relro,
&has_relro,
&off, pshndx);
@@ -3581,7 +3601,8 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
increase_relro = 0;
has_relro = false;
- new_addr = (*p)->set_section_addresses(this, true, addr,
+ new_addr = (*p)->set_section_addresses(target, this,
+ true, addr,
&increase_relro,
&has_relro,
&off, pshndx);
@@ -3617,6 +3638,8 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
// so they land after the segments starting at LOAD_SEG.
off = align_file_offset(off, 0, target->abi_pagesize());
+ this->reset_relax_output();
+
for (Segment_list::iterator p = this->segment_list_.begin();
*p != load_seg;
++p)
@@ -3630,8 +3653,8 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
bool has_relro = false;
const uint64_t old_addr = (*p)->vaddr();
const uint64_t old_end = old_addr + (*p)->memsz();
- uint64_t new_addr = (*p)->set_section_addresses(this, true,
- old_addr,
+ uint64_t new_addr = (*p)->set_section_addresses(target, this,
+ true, old_addr,
&increase_relro,
&has_relro,
&off,
@@ -5268,6 +5291,13 @@ Layout::write_data(const Symbol_table* symtab, Output_file* of) const
p != this->special_output_list_.end();
++p)
(*p)->write(of);
+
+ // Write out the Output_data which are not in an Output_section
+ // and are regenerated in each iteration of relaxation.
+ for (Data_list::const_iterator p = this->relax_output_list_.begin();
+ p != this->relax_output_list_.end();
+ ++p)
+ (*p)->write(of);
}
// Write out the Output_sections which can only be written after the