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PR 7091

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* output.cc (Output_section::find_starting_output_address): Rename
	from starting_output_address; add PADDR parameter; change return
	type.
	* output.h (class Output_section): Declare
	find_starting_output_address instead of starting_output_address.
	* object.cc (Sized_relobj::do_finalize_local_symbols): Handle a
	section symbol for which we can't find a merge section.
This commit is contained in:
Ian Lance Taylor 2009-02-28 00:12:26 +00:00
parent a5a437df77
commit e29e076ab8
4 changed files with 52 additions and 24 deletions
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9
gold/ChangeLog
View File

@ -1,5 +1,14 @@
2009-02-27 Ian Lance Taylor <iant@google.com>
PR 7091
* output.cc (Output_section::find_starting_output_address): Rename
from starting_output_address; add PADDR parameter; change return
type.
* output.h (class Output_section): Declare
find_starting_output_address instead of starting_output_address.
* object.cc (Sized_relobj::do_finalize_local_symbols): Handle a
section symbol for which we can't find a merge section.
PR 9836
* symtab.cc (Symbol_table::add_from_object): If the visibility is
hidden or internal, force the symbol to be local.

31
gold/object.cc
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@ -1554,20 +1554,31 @@ Sized_relobj<size, big_endian>::do_finalize_local_symbols(unsigned int index,
}
else if (out_offsets[shndx] == invalid_address)
{
uint64_t start;
// This is a SHF_MERGE section or one which otherwise
// requires special handling. We get the output address
// of the start of the merged section. If this is not a
// section symbol, we can then determine the final
// value. If it is a section symbol, we can not, as in
// that case we have to consider the addend to determine
// the value to use in a relocation.
// requires special handling.
if (!lv.is_section_symbol())
lv.set_output_value(os->output_address(this, shndx,
lv.input_value()));
{
// This is not a section symbol. We can determine
// the final value now.
lv.set_output_value(os->output_address(this, shndx,
lv.input_value()));
}
else if (!os->find_starting_output_address(this, shndx, &start))
{
// This is a section symbol, but apparently not one
// in a merged section. Just use the start of the
// output section. This happens with relocatable
// links when the input object has section symbols
// for arbitrary non-merge sections.
lv.set_output_value(os->address());
}
else
{
section_offset_type start =
os->starting_output_address(this, shndx);
// We have to consider the addend to determine the
// value to use in a relocation. START is the start
// of this input section.
Merged_symbol_value<size>* msv =
new Merged_symbol_value<size>(lv.input_value(), start);
lv.set_merged_symbol_value(msv);

20
gold/output.cc
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@ -1,6 +1,6 @@
// output.cc -- manage the output file for gold
// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
@ -2057,12 +2057,13 @@ Output_section::output_address(const Relobj* object, unsigned int shndx,
gold_unreachable();
}
// Return the output address of the start of the merged section for
// Find the output address of the start of the merged section for
// input section SHNDX in object OBJECT.
uint64_t
Output_section::starting_output_address(const Relobj* object,
unsigned int shndx) const
bool
Output_section::find_starting_output_address(const Relobj* object,
unsigned int shndx,
uint64_t* paddr) const
{
uint64_t addr = this->address() + this->first_input_offset_;
for (Input_section_list::const_iterator p = this->input_sections_.begin();
@ -2076,11 +2077,16 @@ Output_section::starting_output_address(const Relobj* object,
// Unfortunately we don't know for sure that input offset 0 is
// mapped at all.
if (p->is_merge_section_for(object, shndx))
return addr;
{
*paddr = addr;
return true;
}
addr += p->data_size();
}
gold_unreachable();
// We couldn't find a merge output section for this input section.
return false;
}
// Set the data size of an Output_section. This is where we handle

16
gold/output.h
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@ -1,6 +1,6 @@
// output.h -- manage the output file for gold -*- C++ -*-
// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
@ -2260,12 +2260,14 @@ class Output_section : public Output_data
output_address(const Relobj* object, unsigned int shndx,
off_t offset) const;
// Return the output address of the start of the merged section for
// input section SHNDX in object OBJECT. This is not necessarily
// the offset corresponding to input offset 0 in the section, since
// the section may be mapped arbitrarily.
uint64_t
starting_output_address(const Relobj* object, unsigned int shndx) const;
// Look for the merged section for input section SHNDX in object
// OBJECT. If found, return true, and set *ADDR to the address of
// the start of the merged section. This is not necessary the
// output offset corresponding to input offset 0 in the section,
// since the section may be mapped arbitrarily.
bool
find_starting_output_address(const Relobj* object, unsigned int shndx,
uint64_t* addr) const;
// Record that this output section was found in the SECTIONS clause
// of a linker script.