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binutils/binutils-2.23.51.0.1-gold-keep.patch
Nick Clifton 96e01b840b Make GOLD hHonour KEEP directives in linker scripts. 
Resolves: #8333355
2012-08-14 10:23:24 +01:00

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diff -rcp ../binutils-2.22.52.0.4.orig/gold/layout.cc gold/layout.cc
*** ../binutils-2.22.52.0.4.orig/gold/layout.cc 2012-08-14 09:38:36.359409453 +0100
--- gold/layout.cc 2012-08-14 09:39:16.393410563 +0100
*************** Layout::get_output_section(const char* n
*** 749,754 ****
--- 749,774 ----
}
}
+ // Returns TRUE iff NAME (an input section from RELOBJ) will
+ // be mapped to an output section that should be KEPT.
+
+ bool
+ Layout::keep_input_section(const Relobj* relobj, const char* name)
+ {
+ if (! this->script_options_->saw_sections_clause())
+ return false;
+
+ Script_sections* ss = this->script_options_->script_sections();
+ const char* file_name = relobj == NULL ? NULL : relobj->name().c_str();
+ Output_section** output_section_slot;
+ Script_sections::Section_type script_section_type;
+ bool keep;
+
+ name = ss->output_section_name(file_name, name, &output_section_slot,
+ &script_section_type, &keep);
+ return name != NULL && keep;
+ }
+
// Pick the output section to use for section NAME, in input file
// RELOBJ, with type TYPE and flags FLAGS. RELOBJ may be NULL for a
// linker created section. IS_INPUT_SECTION is true if we are
*************** Layout::choose_output_section(const Relo
*** 789,796 ****
Output_section** output_section_slot;
Script_sections::Section_type script_section_type;
const char* orig_name = name;
name = ss->output_section_name(file_name, name, &output_section_slot,
! &script_section_type);
if (name == NULL)
{
gold_debug(DEBUG_SCRIPT, _("Unable to create output section '%s' "
--- 809,818 ----
Output_section** output_section_slot;
Script_sections::Section_type script_section_type;
const char* orig_name = name;
+ bool keep;
name = ss->output_section_name(file_name, name, &output_section_slot,
! &script_section_type, &keep);
!
if (name == NULL)
{
gold_debug(DEBUG_SCRIPT, _("Unable to create output section '%s' "
diff -rcp ../binutils-2.22.52.0.4.orig/gold/layout.h gold/layout.h
*** ../binutils-2.22.52.0.4.orig/gold/layout.h 2012-08-14 09:38:52.579409903 +0100
--- gold/layout.h 2012-08-14 09:39:16.403410563 +0100
*************** class Layout
*** 920,925 ****
--- 920,930 ----
section_list() const
{ return this->section_list_; }
+ // Returns TRUE iff NAME (an input section from RELOBJ) will
+ // be mapped to an output section that should be KEPT.
+ bool
+ keep_input_section(const Relobj*, const char*);
+
private:
Layout(const Layout&);
Layout& operator=(const Layout&);
diff -rcp ../binutils-2.22.52.0.4.orig/gold/object.cc gold/object.cc
*** ../binutils-2.22.52.0.4.orig/gold/object.cc 2012-08-14 09:38:43.151409641 +0100
--- gold/object.cc 2012-08-14 09:39:16.412410563 +0100
*************** Sized_relobj_file<size, big_endian>::do_
*** 1437,1442 ****
--- 1437,1443 ----
if (is_gc_pass_one && parameters->options().gc_sections())
{
if (this->is_section_name_included(name)
+ || layout->keep_input_section (this, name)
|| shdr.get_sh_type() == elfcpp::SHT_INIT_ARRAY
|| shdr.get_sh_type() == elfcpp::SHT_FINI_ARRAY)
{
diff -rcp ../binutils-2.22.52.0.4.orig/gold/script-sections.cc gold/script-sections.cc
*** ../binutils-2.22.52.0.4.orig/gold/script-sections.cc 2012-08-14 09:38:49.437409815 +0100
--- gold/script-sections.cc 2012-08-14 09:39:16.413410563 +0100
*************** class Sections_element
*** 582,588 ****
// Output_section_definition.
virtual const char*
output_section_name(const char*, const char*, Output_section***,
! Script_sections::Section_type*)
{ return NULL; }
// Initialize OSP with an output section.
--- 582,588 ----
// Output_section_definition.
virtual const char*
output_section_name(const char*, const char*, Output_section***,
! Script_sections::Section_type*, bool*)
{ return NULL; }
// Initialize OSP with an output section.
*************** class Output_section_element
*** 800,806 ****
// Return whether this element matches FILE_NAME and SECTION_NAME.
// The only real implementation is in Output_section_element_input.
virtual bool
! match_name(const char*, const char*) const
{ return false; }
// Set section addresses. This includes applying assignments if the
--- 800,806 ----
// Return whether this element matches FILE_NAME and SECTION_NAME.
// The only real implementation is in Output_section_element_input.
virtual bool
! match_name(const char*, const char*, bool *) const
{ return false; }
// Set section addresses. This includes applying assignments if the
*************** class Output_section_element_input : pub
*** 1238,1247 ****
*dot_section = this->final_dot_section_;
}
! // See whether we match FILE_NAME and SECTION_NAME as an input
! // section.
bool
! match_name(const char* file_name, const char* section_name) const;
// Set the section address.
void
--- 1238,1247 ----
*dot_section = this->final_dot_section_;
}
! // See whether we match FILE_NAME and SECTION_NAME as an input section.
! // If we do then also indicate whether the section should be KEPT.
bool
! match_name(const char* file_name, const char* section_name, bool* keep) const;
// Set the section address.
void
*************** Output_section_element_input::match_file
*** 1393,1407 ****
return true;
}
! // See whether we match FILE_NAME and SECTION_NAME.
bool
Output_section_element_input::match_name(const char* file_name,
! const char* section_name) const
{
if (!this->match_file_name(file_name))
return false;
// If there are no section name patterns, then we match.
if (this->input_section_patterns_.empty())
return true;
--- 1393,1411 ----
return true;
}
! // See whether we match FILE_NAME and SECTION_NAME. If we do then
! // KEEP indicates whether the section should survive garbage collection.
bool
Output_section_element_input::match_name(const char* file_name,
! const char* section_name,
! bool *keep) const
{
if (!this->match_file_name(file_name))
return false;
+ *keep = this->keep_;
+
// If there are no section name patterns, then we match.
if (this->input_section_patterns_.empty())
return true;
*************** class Output_section_definition : public
*** 1861,1867 ****
// section name.
const char*
output_section_name(const char* file_name, const char* section_name,
! Output_section***, Script_sections::Section_type*);
// Initialize OSP with an output section.
void
--- 1865,1872 ----
// section name.
const char*
output_section_name(const char* file_name, const char* section_name,
! Output_section***, Script_sections::Section_type*,
! bool*);
// Initialize OSP with an output section.
void
*************** Output_section_definition::output_sectio
*** 2146,2159 ****
const char* file_name,
const char* section_name,
Output_section*** slot,
! Script_sections::Section_type* psection_type)
{
// Ask each element whether it matches NAME.
for (Output_section_elements::const_iterator p = this->elements_.begin();
p != this->elements_.end();
++p)
{
! if ((*p)->match_name(file_name, section_name))
{
// We found a match for NAME, which means that it should go
// into this output section.
--- 2151,2165 ----
const char* file_name,
const char* section_name,
Output_section*** slot,
! Script_sections::Section_type* psection_type,
! bool* keep)
{
// Ask each element whether it matches NAME.
for (Output_section_elements::const_iterator p = this->elements_.begin();
p != this->elements_.end();
++p)
{
! if ((*p)->match_name(file_name, section_name, keep))
{
// We found a match for NAME, which means that it should go
// into this output section.
*************** Script_sections::output_section_name(
*** 3365,3371 ****
const char* file_name,
const char* section_name,
Output_section*** output_section_slot,
! Script_sections::Section_type* psection_type)
{
for (Sections_elements::const_iterator p = this->sections_elements_->begin();
p != this->sections_elements_->end();
--- 3371,3378 ----
const char* file_name,
const char* section_name,
Output_section*** output_section_slot,
! Script_sections::Section_type* psection_type,
! bool* keep)
{
for (Sections_elements::const_iterator p = this->sections_elements_->begin();
p != this->sections_elements_->end();
*************** Script_sections::output_section_name(
*** 3373,3379 ****
{
const char* ret = (*p)->output_section_name(file_name, section_name,
output_section_slot,
! psection_type);
if (ret != NULL)
{
--- 3380,3386 ----
{
const char* ret = (*p)->output_section_name(file_name, section_name,
output_section_slot,
! psection_type, keep);
if (ret != NULL)
{
diff -rcp ../binutils-2.22.52.0.4.orig/gold/script-sections.h gold/script-sections.h
*** ../binutils-2.22.52.0.4.orig/gold/script-sections.h 2012-08-14 09:38:41.679409601 +0100
--- gold/script-sections.h 2012-08-14 09:39:16.421410563 +0100
*************** class Script_sections
*** 163,172 ****
// PSCRIPT_SECTION_TYPE points to a location for returning the section
// type specified in script. This can be SCRIPT_SECTION_TYPE_NONE if
// no type is specified.
const char*
output_section_name(const char* file_name, const char* section_name,
Output_section*** output_section_slot,
! Section_type* pscript_section_type);
// Place a marker for an orphan output section into the SECTIONS
// clause.
--- 163,174 ----
// PSCRIPT_SECTION_TYPE points to a location for returning the section
// type specified in script. This can be SCRIPT_SECTION_TYPE_NONE if
// no type is specified.
+ // *KEEP indicates whether the section should survive garbage collection.
const char*
output_section_name(const char* file_name, const char* section_name,
Output_section*** output_section_slot,
! Section_type* pscript_section_type,
! bool* keep);
// Place a marker for an orphan output section into the SECTIONS
// clause.
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