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Allow target to add custom dynamic table entries.

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2014-03-10  Sasa Stankovic  <Sasa.Stankovic@imgtec.com>

gold/
	* output.cc (Output_data_dynamic::Dynamic_entry::write):
	Get the value of DYNAMIC_CUSTOM dynamic entry.
	* output.h (Output_data_dynamic::add_custom): New function.
	(Dynamic_entry::Dynamic_entry): New constructor for DYNAMIC_CUSTOM
	dynamic entry.
	(enum Dynamic_entry::Classification): Add DYNAMIC_CUSTOM.
	* target.h (Target::dynamic_tag_custom_value): New function.
	(Target::do_dynamic_tag_custom_value): New function.
This commit is contained in:
Cary Coutant 2014-03-10 13:34:53 -07:00
parent 98ff923154
commit 918fc1f8d2
4 changed files with 38 additions and 1 deletions
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11
gold/ChangeLog
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@ -1,3 +1,14 @@
2014-03-10 Sasa Stankovic <Sasa.Stankovic@imgtec.com>
* output.cc (Output_data_dynamic::Dynamic_entry::write):
Get the value of DYNAMIC_CUSTOM dynamic entry.
* output.h (Output_data_dynamic::add_custom): New function.
(Dynamic_entry::Dynamic_entry): New constructor for DYNAMIC_CUSTOM
dynamic entry.
(enum Dynamic_entry::Classification): Add DYNAMIC_CUSTOM.
* target.h (Target::dynamic_tag_custom_value): New function.
(Target::do_dynamic_tag_custom_value): New function.
2014-03-10 Sasa Stankovic <Sasa.Stankovic@imgtec.com>
* symtab.cc (Symbol_table::set_dynsym_indexes): Allow a target to set

4
gold/output.cc
View file

@ -1796,6 +1796,10 @@ Output_data_dynamic::Dynamic_entry::write(
val = pool->get_offset(this->u_.str);
break;
case DYNAMIC_CUSTOM:
val = parameters->target().dynamic_tag_custom_value(this->tag_);
break;
default:
val = this->u_.od->address() + this->offset_;
break;

14
gold/output.h
View file

@ -2577,6 +2577,11 @@ class Output_data_dynamic : public Output_section_data
add_string(elfcpp::DT tag, const std::string& str)
{ this->add_string(tag, str.c_str()); }
// Add a new dynamic entry with custom value.
void
add_custom(elfcpp::DT tag)
{ this->add_entry(Dynamic_entry(tag)); }
protected:
// Adjust the output section to set the entry size.
void
@ -2641,6 +2646,11 @@ class Output_data_dynamic : public Output_section_data
: tag_(tag), offset_(DYNAMIC_STRING)
{ this->u_.str = str; }
// Create an entry with a custom value.
Dynamic_entry(elfcpp::DT tag)
: tag_(tag), offset_(DYNAMIC_CUSTOM)
{ }
// Return the tag of this entry.
elfcpp::DT
tag() const
@ -2664,7 +2674,9 @@ class Output_data_dynamic : public Output_section_data
// Symbol adress.
DYNAMIC_SYMBOL = -3U,
// String.
DYNAMIC_STRING = -4U
DYNAMIC_STRING = -4U,
// Custom value.
DYNAMIC_CUSTOM = -5U
// Any other value indicates a section address plus OFFSET.
};

10
gold/target.h
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@ -470,6 +470,11 @@ class Target
versions, symtab);
}
// Get the custom dynamic tag value.
unsigned int
dynamic_tag_custom_value(elfcpp::DT tag) const
{ return this->do_dynamic_tag_custom_value(tag); }
protected:
// This struct holds the constant information for a child class. We
// use a struct to avoid the overhead of virtual function calls for
@ -753,6 +758,11 @@ class Target
Symbol_table*) const
{ gold_unreachable(); }
// This may be overridden by the child class.
virtual unsigned int
do_dynamic_tag_custom_value(elfcpp::DT) const
{ gold_unreachable(); }
private:
// The implementations of the four do_make_elf_object virtual functions are
// almost identical except for their sizes and endianness. We use a template.