* Makefile.am (CCFILES): Add attributes.cc and int_encoding.cc.
(HFILES): Add attributes.h and int_encoding.h.
* Makefile.in: Regenerate.
* dwarf_reader.cc (read_unsigned_LEB_128, read_signed_LEB_128): Move
function definitions to int_encoding.cc
* dwarf_reader.h (read_unsigned_LEB_128, read_signed_LEB_128): Move
prototypes to int_encoding.h
* reduced_debug_output.cc (int_encoding.h): New include.
(write_unsigned_LEB_128, get_length_as_unsigned_LEB_128): Move
function definitions to int_encoding.cc
(insert_into_vector, read_from_pointer): Move template definitions to
int_encoding.h
* attributes.cc: New file.
* attributes.h: New file.
* int_encoding.cc: New file.
* int_encoding.h: New file.
+2009-12-08 Doug Kwan <dougkwan@google.com>
+
+ * Makefile.am (CCFILES): Add attributes.cc and int_encoding.cc.
+ (HFILES): Add attributes.h and int_encoding.h.
+ * Makefile.in: Regenerate.
+ * dwarf_reader.cc (read_unsigned_LEB_128, read_signed_LEB_128): Move
+ function definitions to int_encoding.cc
+ * dwarf_reader.h (read_unsigned_LEB_128, read_signed_LEB_128): Move
+ prototypes to int_encoding.h
+ * reduced_debug_output.cc (int_encoding.h): New include.
+ (write_unsigned_LEB_128, get_length_as_unsigned_LEB_128): Move
+ function definitions to int_encoding.cc
+ (insert_into_vector, read_from_pointer): Move template definitions to
+ int_encoding.h
+ * attributes.cc: New file.
+ * attributes.h: New file.
+ * int_encoding.cc: New file.
+ * int_encoding.h: New file.
+
2009-12-07 Rafael Avila de Espindola <espindola@google.com>
PR gold/11055
CCFILES = \
archive.cc \
+ attributes.cc \
binary.cc \
common.cc \
compressed_output.cc \
gold-threads.cc \
icf.cc \
incremental.cc \
+ int_encoding.cc \
layout.cc \
mapfile.cc \
merge.cc \
HFILES = \
archive.h \
+ attributes.h \
binary.h \
common.h \
compressed_output.h \
gold.h \
gold-threads.h \
icf.h \
+ int_encoding.h \
layout.h \
mapfile.h \
merge.h \
ARFLAGS = cru
libgold_a_AR = $(AR) $(ARFLAGS)
libgold_a_DEPENDENCIES = $(LIBOBJS)
-am__objects_1 = archive.$(OBJEXT) binary.$(OBJEXT) common.$(OBJEXT) \
- compressed_output.$(OBJEXT) copy-relocs.$(OBJEXT) \
- cref.$(OBJEXT) defstd.$(OBJEXT) descriptors.$(OBJEXT) \
- dirsearch.$(OBJEXT) dynobj.$(OBJEXT) dwarf_reader.$(OBJEXT) \
- ehframe.$(OBJEXT) errors.$(OBJEXT) expression.$(OBJEXT) \
- fileread.$(OBJEXT) gc.$(OBJEXT) gold.$(OBJEXT) \
- gold-threads.$(OBJEXT) icf.$(OBJEXT) incremental.$(OBJEXT) \
- layout.$(OBJEXT) mapfile.$(OBJEXT) merge.$(OBJEXT) \
- object.$(OBJEXT) options.$(OBJEXT) output.$(OBJEXT) \
- parameters.$(OBJEXT) plugin.$(OBJEXT) readsyms.$(OBJEXT) \
+am__objects_1 = archive.$(OBJEXT) attributes.$(OBJEXT) \
+ binary.$(OBJEXT) common.$(OBJEXT) compressed_output.$(OBJEXT) \
+ copy-relocs.$(OBJEXT) cref.$(OBJEXT) defstd.$(OBJEXT) \
+ descriptors.$(OBJEXT) dirsearch.$(OBJEXT) dynobj.$(OBJEXT) \
+ dwarf_reader.$(OBJEXT) ehframe.$(OBJEXT) errors.$(OBJEXT) \
+ expression.$(OBJEXT) fileread.$(OBJEXT) gc.$(OBJEXT) \
+ gold.$(OBJEXT) gold-threads.$(OBJEXT) icf.$(OBJEXT) \
+ incremental.$(OBJEXT) int_encoding.$(OBJEXT) layout.$(OBJEXT) \
+ mapfile.$(OBJEXT) merge.$(OBJEXT) object.$(OBJEXT) \
+ options.$(OBJEXT) output.$(OBJEXT) parameters.$(OBJEXT) \
+ plugin.$(OBJEXT) readsyms.$(OBJEXT) \
reduced_debug_output.$(OBJEXT) reloc.$(OBJEXT) \
resolve.$(OBJEXT) script-sections.$(OBJEXT) script.$(OBJEXT) \
stringpool.$(OBJEXT) symtab.$(OBJEXT) target.$(OBJEXT) \
noinst_LIBRARIES = libgold.a
CCFILES = \
archive.cc \
+ attributes.cc \
binary.cc \
common.cc \
compressed_output.cc \
gold-threads.cc \
icf.cc \
incremental.cc \
+ int_encoding.cc \
layout.cc \
mapfile.cc \
merge.cc \
HFILES = \
archive.h \
+ attributes.h \
binary.h \
common.h \
compressed_output.h \
gold.h \
gold-threads.h \
icf.h \
+ int_encoding.h \
layout.h \
mapfile.h \
merge.h \
@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/pread.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/archive.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/arm.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/attributes.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/binary.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/common.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/compressed_output.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/icf.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/incremental-dump.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/incremental.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/int_encoding.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/layout.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/main.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mapfile.Po@am__quote@
--- /dev/null
+// attributes.cc -- object attributes for gold
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Doug Kwan <dougkwan@google.com>.
+// This file contains code adapted from BFD.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#include "gold.h"
+
+#include <limits>
+
+#include "attributes.h"
+#include "elfcpp.h"
+#include "target.h"
+#include "parameters.h"
+#include "int_encoding.h"
+
+namespace gold
+{
+
+// Object_attribute methods.
+
+// Return size of attribute encode in ULEB128.
+
+size_t
+Object_attribute::size(int tag) const
+{
+ // Attributes with default values are not written out.
+ if (this->is_default_attribute())
+ return 0;
+
+ size_t size = get_length_as_unsigned_LEB_128(tag);
+ if (Object_attribute::attribute_type_has_int_value(this->type_))
+ size += get_length_as_unsigned_LEB_128(this->int_value_);
+ if (Object_attribute::attribute_type_has_string_value(this->type_))
+ size += this->string_value_.size() + 1;
+ return size;
+}
+
+// Whether this has the default value (0/"").
+
+bool
+Object_attribute::is_default_attribute() const
+{
+ if (Object_attribute::attribute_type_has_int_value(this->type_)
+ && this->int_value_ != 0)
+ return false;
+ if (Object_attribute::attribute_type_has_string_value(this->type_)
+ && !this->string_value_.empty())
+ return false;
+ if (Object_attribute::attribute_type_has_no_default(this->type_))
+ return false;
+
+ return true;
+}
+
+// Whether this matches another Object_attribute OA in merging.
+// Two Object_attributes match if they have the same values.
+
+bool
+Object_attribute::matches(const Object_attribute& oa) const
+{
+ return ((this->int_value_ != oa.int_value_)
+ && (this->string_value_ == oa.string_value_));
+}
+
+// Write this with TAG to a BUFFER.
+
+void
+Object_attribute::write(
+ int tag,
+ std::vector<unsigned char>* buffer) const
+{
+ // No need to write default attributes.
+ if (this->is_default_attribute())
+ return;
+
+ // Write tag.
+ write_unsigned_LEB_128(buffer, convert_types<uint64_t, int>(tag));
+
+ // Write integer value.
+ if (Object_attribute::attribute_type_has_int_value(this->type_))
+ write_unsigned_LEB_128(buffer,
+ convert_types<uint64_t, int>(this->int_value_));
+
+ // Write string value.
+ if (Object_attribute::attribute_type_has_string_value(this->type_))
+ {
+ const unsigned char* start =
+ reinterpret_cast<const unsigned char*>(this->string_value_.c_str());
+ const unsigned char* end = start + this->string_value_.size() + 1;
+ buffer->insert(buffer->end(), start, end);
+ }
+}
+
+// Vendor_object_attributes methods.
+
+// Copying constructor.
+
+Vendor_object_attributes::Vendor_object_attributes(
+ const Vendor_object_attributes& voa)
+{
+ this->vendor_ = voa.vendor_;
+
+ for (int i = 0; i < NUM_KNOWN_ATTRIBUTES; ++i)
+ this->known_attributes_[i] = voa.known_attributes_[i];
+
+ // We do not handle attribute deletion. So this must be empty.
+ gold_assert(this->other_attributes_.empty());
+
+ for (Other_attributes::const_iterator p = voa.other_attributes_.begin();
+ p != voa.other_attributes_.end();
+ ++p)
+ this->other_attributes_[p->first] = new Object_attribute(*(p->second));
+}
+
+// Size of this in number of bytes.
+
+size_t
+Vendor_object_attributes::size() const
+{
+ if (this->name() == NULL)
+ return 0;
+
+ size_t data_size = 0;
+ for (int i = 4; i < NUM_KNOWN_ATTRIBUTES; ++i)
+ data_size += this->known_attributes_[i].size(i);
+
+ for (Other_attributes::const_iterator p = this->other_attributes_.begin();
+ p != this->other_attributes_.end();
+ ++p)
+ data_size += p->second->size(p->first);
+
+ // <size> <vendor_name> NUL 0x1 <size>
+ return ((data_size != 0
+ || this->vendor_ == Object_attribute::OBJ_ATTR_PROC)
+ ? data_size + strlen(this->name()) + 2 + 2 * 4
+ : 0);
+}
+
+// Return a new attribute associated with TAG.
+
+Object_attribute*
+Vendor_object_attributes::new_attribute(int tag)
+{
+ int type = Object_attribute::arg_type(this->vendor_, tag);
+
+ if (tag < NUM_KNOWN_ATTRIBUTES)
+ {
+ this->known_attributes_[tag].set_type(type);
+ return &this->known_attributes_[tag];
+ }
+ else
+ {
+ Object_attribute* attr = new Object_attribute();
+
+ // This should be the first time we insert this.
+ std::pair<Other_attributes::iterator, bool> ins =
+ this->other_attributes_.insert(std::make_pair(tag, attr));
+ gold_assert(ins.second);
+
+ attr->set_type(type);
+ return attr;
+ }
+}
+
+// Return an attribute associated with TAG.
+
+Object_attribute*
+Vendor_object_attributes::get_attribute(int tag)
+{
+ if (tag < NUM_KNOWN_ATTRIBUTES)
+ return &this->known_attributes_[tag];
+ else
+ {
+ Other_attributes::iterator p =
+ this->other_attributes_.find(tag);
+ return p != this->other_attributes_.end() ? p->second : NULL;
+ }
+}
+
+const Object_attribute*
+Vendor_object_attributes::get_attribute(int tag) const
+{
+ if (tag < NUM_KNOWN_ATTRIBUTES)
+ return &this->known_attributes_[tag];
+ else
+ {
+ Other_attributes::const_iterator p =
+ this->other_attributes_.find(tag);
+ return p != this->other_attributes_.end() ? p->second : NULL;
+ }
+}
+
+// Write attributes to BUFFER.
+
+void
+Vendor_object_attributes::write(std::vector<unsigned char>* buffer) const
+{
+ // Write subsection size.
+ size_t voa_size = this->size();
+ uint32_t voa_size_as_u32 = convert_types<uint32_t, size_t>(voa_size);
+ insert_into_vector<32>(buffer, voa_size_as_u32);
+
+ // Write vendor name.
+ const unsigned char* vendor_start =
+ reinterpret_cast<const unsigned char*>(this->name());
+ size_t vendor_length = strlen(this->name()) + 1;
+ const unsigned char* vendor_end = vendor_start + vendor_length;
+ buffer->insert(buffer->end(), vendor_start, vendor_end);
+
+ // Write file tag.
+ buffer->push_back(Object_attribute::Tag_File);
+
+ // Write attributes size.
+ uint32_t attributes_size_as_u32 =
+ convert_types<uint32_t, size_t>(voa_size - 4 - vendor_length);
+ insert_into_vector<32>(buffer, attributes_size_as_u32);
+
+ // Write known attributes, skipping any defaults.
+ for (int i = 4; i < NUM_KNOWN_ATTRIBUTES; ++i)
+ {
+ // A target may write known attributes in a special order.
+ // Call target hook to remap tags. Attributes_order is the identity
+ // function if no re-ordering is required.
+ int tag = parameters->target().attributes_order(i);
+ this->known_attributes_[tag].write(tag, buffer);
+ }
+
+ // Write other attributes.
+ for (Other_attributes::const_iterator q = this->other_attributes_.begin();
+ q != this->other_attributes_.end();
+ ++q)
+ q->second->write(q->first, buffer);
+}
+
+// Attributes_section_data methods.
+
+// Compute encoded size of this.
+
+size_t
+Attributes_section_data::size() const
+{
+ size_t data_size = 0;
+ for(int vendor = OBJ_ATTR_FIRST; vendor <= OBJ_ATTR_LAST; ++vendor)
+ data_size += this->vendor_object_attributes_[vendor]->size();
+
+ // 'A' <sections for each vendor>
+ return data_size != 0 ? data_size + 1 : 0;
+}
+
+// Construct an Attributes_section_data object by parsing section contents
+// specified by VIEW and SIZE.
+
+Attributes_section_data::Attributes_section_data(
+ const unsigned char* view,
+ section_size_type size)
+{
+ for (int vendor = OBJ_ATTR_FIRST; vendor <= OBJ_ATTR_LAST; ++vendor)
+ this->vendor_object_attributes_[vendor] =
+ new Vendor_object_attributes(vendor);
+
+ const unsigned char *p = view;
+ p = view;
+ if (*(p++) == 'A')
+ {
+ size--;
+ while (size > 0)
+ {
+ // Size of vendor attributes section.
+ section_size_type section_size =
+ convert_to_section_size_type(read_from_pointer<32>(&p));
+
+ if (section_size > size)
+ section_size = size;
+ size -= section_size;
+
+ const char* section_name = reinterpret_cast<const char*>(p);
+ section_size_type section_name_size = strlen(section_name) + 1;
+ section_size -= section_name_size + 4;
+
+ int vendor;
+ const char *std_section = parameters->target().attributes_vendor();
+ if (std_section != NULL && strcmp(section_name, std_section) == 0)
+ vendor = Object_attribute::OBJ_ATTR_PROC;
+ else if (strcmp(section_name, "gnu") == 0)
+ vendor = Object_attribute::OBJ_ATTR_GNU;
+ else
+ {
+ // Other vendor section. Ignore it.
+ p += section_name_size + section_size;
+ continue;
+ }
+ p += section_name_size;
+
+ while (section_size > 0)
+ {
+ const unsigned char* subsection_start = p;
+
+ // Read vendor subsection index and size.
+ size_t uleb128_len;
+ uint64_t val = read_unsigned_LEB_128(p, &uleb128_len);
+ p += uleb128_len;
+
+ int tag = convert_types<int, uint64_t>(val);
+ section_size_type subsection_size =
+ convert_to_section_size_type(read_from_pointer<32>(&p));
+ section_size -= subsection_size;
+ subsection_size -= (p - subsection_start);
+
+ const unsigned char* end = p + subsection_size;
+ switch (tag)
+ {
+ case Object_attribute::Tag_File:
+ while (p < end)
+ {
+ val = read_unsigned_LEB_128(p, &uleb128_len);
+ p += uleb128_len;
+ tag = convert_types<int, uint64_t>(val);
+ Vendor_object_attributes* pvoa =
+ this->vendor_object_attributes_[vendor];
+ Object_attribute* attr = pvoa->new_attribute(tag);
+ const char* string_arg;
+ unsigned int int_arg;
+
+ int type = Object_attribute::arg_type(vendor, tag);
+ switch (type
+ & (Object_attribute::ATTR_TYPE_FLAG_INT_VAL
+ | Object_attribute::ATTR_TYPE_FLAG_STR_VAL))
+ {
+ case (Object_attribute::ATTR_TYPE_FLAG_INT_VAL
+ | Object_attribute::ATTR_TYPE_FLAG_STR_VAL):
+ val = read_unsigned_LEB_128(p, &uleb128_len);
+ p += uleb128_len;
+ int_arg = convert_types<unsigned int, uint64_t>(val);
+ string_arg = reinterpret_cast<const char *>(p);
+ attr->set_int_value(int_arg);
+ p += strlen(string_arg) + 1;
+ break;
+ case Object_attribute::ATTR_TYPE_FLAG_STR_VAL:
+ string_arg = reinterpret_cast<const char *>(p);
+ attr->set_string_value(string_arg);
+ p += strlen(string_arg) + 1;
+ break;
+ case Object_attribute::ATTR_TYPE_FLAG_INT_VAL:
+ val = read_unsigned_LEB_128(p, &uleb128_len);
+ p += uleb128_len;
+ int_arg = convert_types<unsigned int, uint64_t>(val);
+ attr->set_int_value(int_arg);
+ break;
+ default:
+ gold_unreachable();
+ }
+ }
+ break;
+ case Object_attribute::Tag_Section:
+ case Object_attribute::Tag_Symbol:
+ // Don't have anywhere convenient to attach these.
+ // Fall through for now.
+ default:
+ // Ignore things we don't know about.
+ p += subsection_size;
+ subsection_size = 0;
+ break;
+ }
+ }
+ }
+ }
+}
+
+// Merge target-independent attributes from another Attribute_section_data
+// ASD from an object called NAME into this.
+
+void
+Attributes_section_data::merge(
+ const char* name,
+ const Attributes_section_data* pasd)
+{
+ // The only common attribute is currently Tag_compatibility,
+ // accepted in both processor and "gnu" sections.
+ for (int vendor = OBJ_ATTR_FIRST; vendor <= OBJ_ATTR_LAST; ++vendor)
+ {
+ // Handle Tag_compatibility. The tags are only compatible if the flags
+ // are identical and, if the flags are '1', the strings are identical.
+ // If the flags are non-zero, then we can only use the string "gnu".
+ const Object_attribute* in_attr =
+ &pasd->known_attributes(vendor)[Object_attribute::Tag_compatibility];
+ Object_attribute* out_attr =
+ &this->known_attributes(vendor)[Object_attribute::Tag_compatibility];
+
+ if (in_attr->int_value() > 0
+ && in_attr->string_value() != "gnu")
+ {
+ gold_error(_("%s: must be processed by '%s' toolchain"),
+ name, in_attr->string_value().c_str());
+ return;
+ }
+
+ if (in_attr->int_value() != out_attr->int_value()
+ || in_attr->string_value() != out_attr->string_value())
+ {
+ gold_error(_("%s: object tag '%d, %s' is "
+ "incompatible with tag '%d, %s'"),
+ name, in_attr->int_value(),
+ in_attr->string_value().c_str(),
+ out_attr->int_value(),
+ out_attr->string_value().c_str());
+ }
+ }
+}
+
+// Write to a buffer.
+
+void
+Attributes_section_data::write(std::vector<unsigned char>* buffer) const
+{
+ buffer->push_back('A');
+ for (int vendor = OBJ_ATTR_FIRST; vendor <= OBJ_ATTR_LAST; ++vendor)
+ if (this->vendor_object_attributes_[vendor]->size() != 0)
+ this->vendor_object_attributes_[vendor]->write(buffer);
+}
+
+// Methods for Output_attributes_section_data.
+
+// Write attributes section data to file OF.
+
+void
+Output_attributes_section_data::do_write(Output_file* of)
+{
+ off_t offset = this->offset();
+ const section_size_type oview_size =
+ convert_to_section_size_type(this->data_size());
+ unsigned char* const oview = of->get_output_view(offset, oview_size);
+
+ std::vector<unsigned char> buffer;
+ this->attributes_section_data_.write(&buffer);
+ gold_assert(convert_to_section_size_type(buffer.size()) == oview_size);
+ memcpy(oview, buffer.data(), buffer.size());
+ of->write_output_view(this->offset(), oview_size, oview);
+}
+
+} // End namespace gold.
--- /dev/null
+// attributes.h -- object attributes for gold -*- C++ -*-
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Doug Kwan <dougkwan@google.com>.
+// This file contains code adapted from BFD.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+// Handle object attributes.
+
+#ifndef GOLD_ATTRIBUTES_H
+#define GOLD_ATTRIBUTES_H
+
+#include <map>
+
+#include "parameters.h"
+#include "target.h"
+#include "output.h"
+#include "reduced_debug_output.h"
+
+namespace gold
+{
+
+// Object attribute values. The attribute tag is not stored in this object.
+
+class Object_attribute
+{
+ public:
+ // The value of an object attribute. The type indicates whether the
+ // attribute holds and integer, a string, or both. It can also indicate that
+ // there can be no default (i.e. all values must be written to file, even
+ // zero).
+ enum
+ {
+ ATTR_TYPE_FLAG_INT_VAL = (1 << 0),
+ ATTR_TYPE_FLAG_STR_VAL = (1 << 1),
+ ATTR_TYPE_FLAG_NO_DEFAULT = (1 << 2)
+ };
+
+ // Object attributes may either be defined by the processor ABI, index
+ // OBJ_ATTR_PROC in the *_obj_attributes arrays, or be GNU-specific
+ // (and possibly also processor-specific), index OBJ_ATTR_GNU.
+ enum
+ {
+ OBJ_ATTR_PROC,
+ OBJ_ATTR_GNU,
+ OBJ_ATTR_FIRST = OBJ_ATTR_PROC,
+ OBJ_ATTR_LAST = OBJ_ATTR_GNU
+ };
+
+ // The following object attribute tags are taken as generic, for all
+ // targets and for "gnu" where there is no target standard.
+ enum
+ {
+ Tag_NULL = 0,
+ Tag_File = 1,
+ Tag_Section = 2,
+ Tag_Symbol = 3,
+ Tag_compatibility = 32
+ };
+
+ Object_attribute()
+ : type_(0), int_value_(0), string_value_()
+ { }
+
+ // Copying constructor. We need to implement this to copy the string value.
+ Object_attribute(const Object_attribute& oa)
+ : type_(oa.type_), int_value_(oa.int_value_), string_value_(oa.string_value_)
+ { }
+
+ ~Object_attribute()
+ { }
+
+ // Assignment operator. We need to implement this to copy the string value.
+ Object_attribute&
+ operator=(const Object_attribute& source)
+ {
+ this->type_ = source.type_;
+ this->int_value_ = source.int_value_;
+ this->string_value_ = source.string_value_;
+ return *this;
+ }
+
+ // Return attribute type.
+ int
+ type() const
+ { return this->type_; }
+
+ // Set attribute type.
+ void
+ set_type(int type)
+ { this->type_ = type; }
+
+ // Return integer value.
+ unsigned int
+ int_value() const
+ { return this->int_value_; }
+
+ // Set integer value.
+ void
+ set_int_value(unsigned int i)
+ { this->int_value_ = i; }
+
+ // Return string value.
+ const std::string&
+ string_value() const
+ { return this->string_value_; }
+
+ // Set string value.
+ void
+ set_string_value(const std::string& s)
+ { this->string_value_ = s; }
+
+ void
+ set_string_value(const char* s)
+ { this->string_value_ = s; }
+
+ // Whether attribute type has integer value.
+ static bool
+ attribute_type_has_int_value(int type)
+ { return (type & ATTR_TYPE_FLAG_INT_VAL) != 0; }
+
+ // Whether attribute type has string value.
+ static bool
+ attribute_type_has_string_value(int type)
+ { return (type & ATTR_TYPE_FLAG_STR_VAL) != 0; }
+
+ // Whether attribute type has no default value.
+ static bool
+ attribute_type_has_no_default(int type)
+ { return (type & ATTR_TYPE_FLAG_NO_DEFAULT) != 0; }
+
+ // Whether this has default value (0/"").
+ bool
+ is_default_attribute() const;
+
+ // Return ULEB128 encoded size of tag and attribute.
+ size_t
+ size(int tag) const;
+
+ // Whether this matches another object attribute in merging.
+ bool
+ matches(const Object_attribute& oa) const;
+
+ // Write to attribute with tag to BUFFER.
+ void
+ write(int tag, std::vector<unsigned char>* buffer) const;
+
+ // Determine what arguments an attribute tag takes.
+ static int
+ arg_type (int vendor, int tag)
+ {
+ switch (vendor)
+ {
+ case OBJ_ATTR_PROC:
+ return parameters->target().attribute_arg_type(tag);
+ case OBJ_ATTR_GNU:
+ return Object_attribute::gnu_arg_type(tag);
+ default:
+ gold_unreachable();
+ }
+ }
+
+ private:
+ // Determine whether a GNU object attribute tag takes an integer, a
+ // string or both. */
+ static int
+ gnu_arg_type (int tag)
+ {
+ // Except for Tag_compatibility, for GNU attributes we follow the
+ // same rule ARM ones > 32 follow: odd-numbered tags take strings
+ // and even-numbered tags take integers. In addition, tag & 2 is
+ // nonzero for architecture-independent tags and zero for
+ // architecture-dependent ones.
+ if (tag == Object_attribute::Tag_compatibility)
+ return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
+ else
+ return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
+ }
+
+ // Attribute type.
+ int type_;
+ // Integer value.
+ int int_value_;
+ // String value.
+ std::string string_value_;
+};
+
+// This class contains attributes of a particular vendor.
+
+class Vendor_object_attributes
+{
+ public:
+ // The maximum number of known object attributes for any target.
+ static const int NUM_KNOWN_ATTRIBUTES = 71;
+
+ Vendor_object_attributes(int vendor)
+ : vendor_(vendor), other_attributes_()
+ { }
+
+ // Copying constructor.
+ Vendor_object_attributes(const Vendor_object_attributes&);
+
+ ~Vendor_object_attributes()
+ {
+ for (Other_attributes::iterator p = this->other_attributes_.begin();
+ p != this->other_attributes_.end();
+ ++p)
+ delete p->second;
+ }
+
+ // Size of this in number of bytes.
+ size_t
+ size() const;
+
+ // Name of this written vendor subsection.
+ const char*
+ name() const
+ {
+ return (this->vendor_ == Object_attribute::OBJ_ATTR_PROC
+ ? parameters->target().attributes_vendor()
+ : "gnu");
+ }
+
+ // Return an array of known attributes.
+ Object_attribute*
+ known_attributes()
+ { return &this->known_attributes_[0]; }
+
+ const Object_attribute*
+ known_attributes() const
+ { return &this->known_attributes_[0]; }
+
+ typedef std::map<int, Object_attribute*> Other_attributes;
+
+ // Return attributes other than the known ones.
+ Other_attributes*
+ other_attributes()
+ { return &this->other_attributes_; }
+
+ const Other_attributes*
+ other_attributes() const
+ { return &this->other_attributes_; }
+
+ // Return a new attribute asssociated with TAG.
+ Object_attribute*
+ new_attribute(int tag);
+
+ // Get an attribute
+ Object_attribute*
+ get_attribute(int tag);
+
+ const Object_attribute*
+ get_attribute(int tag) const;
+
+ // Write to BUFFER.
+ void
+ write(std::vector<unsigned char>* buffer) const;
+
+ private:
+ // Vendor of the object attributes.
+ int vendor_;
+ // Attributes with known tags. There are store in an array for fast
+ // access.
+ Object_attribute known_attributes_[NUM_KNOWN_ATTRIBUTES];
+ // Attributes with known tags. There are stored in a sorted container.
+ Other_attributes other_attributes_;
+};
+
+// This class contains contents of an attributes section.
+
+class Attributes_section_data
+{
+ public:
+ // Construct an Attributes_section_data object by parsing section contents
+ // in VIEW of SIZE.
+ Attributes_section_data(const unsigned char* view, section_size_type size);
+
+ // Copying constructor.
+ Attributes_section_data(const Attributes_section_data& asd)
+ {
+ for (int vendor = Object_attribute::OBJ_ATTR_FIRST;
+ vendor <= Object_attribute::OBJ_ATTR_LAST;
+ ++vendor)
+ this->vendor_object_attributes_[vendor] =
+ new Vendor_object_attributes(*asd.vendor_object_attributes_[vendor]);
+ }
+
+ ~Attributes_section_data()
+ {
+ for (int vendor = Object_attribute::OBJ_ATTR_FIRST;
+ vendor <= Object_attribute::OBJ_ATTR_LAST;
+ ++vendor)
+ delete this->vendor_object_attributes_[vendor];
+ }
+
+ // Return the size of this as number of bytes.
+ size_t
+ size() const;
+
+ // Return an array of known attributes.
+ Object_attribute*
+ known_attributes(int vendor)
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->known_attributes();
+ }
+
+ const Object_attribute*
+ known_attributes(int vendor) const
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->known_attributes();
+ }
+
+ // Return the other attributes.
+ Vendor_object_attributes::Other_attributes*
+ other_attributes(int vendor)
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->other_attributes();
+ }
+
+ // Return the other attributes.
+ const Vendor_object_attributes::Other_attributes*
+ other_attributes(int vendor) const
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->other_attributes();
+ }
+
+ // Return an attribute.
+ Object_attribute*
+ get_attribute(int vendor, int tag)
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->get_attribute(tag);
+ }
+
+ const Object_attribute*
+ get_attribute(int vendor, int tag) const
+ {
+ gold_assert(vendor >= OBJ_ATTR_FIRST && vendor <= OBJ_ATTR_LAST);
+ return this->vendor_object_attributes_[vendor]->get_attribute(tag);
+ }
+
+ // Merge target-independent attributes from another Attributes_section_data
+ // of an object called NAME.
+ void
+ merge(const char* name, const Attributes_section_data* pasd);
+
+ // Write to byte stream in an unsigned char vector.
+ void
+ write(std::vector<unsigned char>*) const;
+
+ private:
+ // For convenience.
+ static const int OBJ_ATTR_FIRST = Object_attribute::OBJ_ATTR_FIRST;
+ static const int OBJ_ATTR_LAST = Object_attribute::OBJ_ATTR_LAST;
+
+ // Vendor object attributes.
+ Vendor_object_attributes* vendor_object_attributes_[OBJ_ATTR_LAST+1];
+};
+
+// This class is used for writing out an Attribute_section_data.
+
+class Output_attributes_section_data : public Output_section_data
+{
+ public:
+ Output_attributes_section_data(const Attributes_section_data& asd)
+ : Output_section_data(1), attributes_section_data_(asd)
+ { }
+
+ protected:
+ // Write the data to the output file.
+ void
+ do_write(Output_file*);
+
+ // Set final data size.
+ void
+ set_final_data_size()
+ { this->set_data_size(attributes_section_data_.size()); }
+
+ private:
+ // Attributes_section_data corresponding to this.
+ const Attributes_section_data& attributes_section_data_;
+};
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_ATTRIBUTES_H)
#include "parameters.h"
#include "reloc.h"
#include "dwarf_reader.h"
+#include "int_encoding.h"
namespace gold {
-// Read an unsigned LEB128 number. Each byte contains 7 bits of
-// information, plus one bit saying whether the number continues or
-// not.
-
-uint64_t
-read_unsigned_LEB_128(const unsigned char* buffer, size_t* len)
-{
- uint64_t result = 0;
- size_t num_read = 0;
- unsigned int shift = 0;
- unsigned char byte;
-
- do
- {
- if (num_read >= 64 / 7)
- {
- gold_warning(_("Unusually large LEB128 decoded, "
- "debug information may be corrupted"));
- break;
- }
- byte = *buffer++;
- num_read++;
- result |= (static_cast<uint64_t>(byte & 0x7f)) << shift;
- shift += 7;
- }
- while (byte & 0x80);
-
- *len = num_read;
-
- return result;
-}
-
-// Read a signed LEB128 number. These are like regular LEB128
-// numbers, except the last byte may have a sign bit set.
-
-int64_t
-read_signed_LEB_128(const unsigned char* buffer, size_t* len)
-{
- int64_t result = 0;
- int shift = 0;
- size_t num_read = 0;
- unsigned char byte;
-
- do
- {
- if (num_read >= 64 / 7)
- {
- gold_warning(_("Unusually large LEB128 decoded, "
- "debug information may be corrupted"));
- break;
- }
- byte = *buffer++;
- num_read++;
- result |= (static_cast<uint64_t>(byte & 0x7f) << shift);
- shift += 7;
- }
- while (byte & 0x80);
-
- if ((shift < 8 * static_cast<int>(sizeof(result))) && (byte & 0x40))
- result |= -((static_cast<int64_t>(1)) << shift);
- *len = num_read;
- return result;
-}
-
-// This is the format of a DWARF2/3 line state machine that we process
-// opcodes using. There is no need for anything outside the lineinfo
-// processor to know how this works.
-
struct LineStateMachine
{
int file_num;
class Track_relocs;
struct LineStateMachine;
-uint64_t
-read_unsigned_LEB_128(const unsigned char* buffer, size_t* len);
-
-int64_t
-read_signed_LEB_128(const unsigned char* buffer, size_t* len);
-
// We can't do better than to keep the offsets in a sorted vector.
// Here, offset is the key, and file_num/line_num is the value.
struct Offset_to_lineno_entry
--- /dev/null
+// varint.cc -- variable length and unaligned integer encoding support.
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Doug Kwan <dougkwan@google.com> by refactoring scattered
+// contents from other files in gold. Original code written by Ian
+// Lance Taylor <iant@google.com> and Caleb Howe <cshowe@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#include "gold.h"
+
+#include <vector>
+
+#include "int_encoding.h"
+
+namespace gold {
+
+// Read an unsigned LEB128 number. Each byte contains 7 bits of
+// information, plus one bit saying whether the number continues or
+// not.
+
+uint64_t
+read_unsigned_LEB_128(const unsigned char* buffer, size_t* len)
+{
+ uint64_t result = 0;
+ size_t num_read = 0;
+ unsigned int shift = 0;
+ unsigned char byte;
+
+ do
+ {
+ if (num_read >= 64 / 7)
+ {
+ gold_warning(_("Unusually large LEB128 decoded, "
+ "debug information may be corrupted"));
+ break;
+ }
+ byte = *buffer++;
+ num_read++;
+ result |= (static_cast<uint64_t>(byte & 0x7f)) << shift;
+ shift += 7;
+ }
+ while (byte & 0x80);
+
+ *len = num_read;
+
+ return result;
+}
+
+// Read a signed LEB128 number. These are like regular LEB128
+// numbers, except the last byte may have a sign bit set.
+
+int64_t
+read_signed_LEB_128(const unsigned char* buffer, size_t* len)
+{
+ int64_t result = 0;
+ int shift = 0;
+ size_t num_read = 0;
+ unsigned char byte;
+
+ do
+ {
+ if (num_read >= 64 / 7)
+ {
+ gold_warning(_("Unusually large LEB128 decoded, "
+ "debug information may be corrupted"));
+ break;
+ }
+ byte = *buffer++;
+ num_read++;
+ result |= (static_cast<uint64_t>(byte & 0x7f) << shift);
+ shift += 7;
+ }
+ while (byte & 0x80);
+
+ if ((shift < 8 * static_cast<int>(sizeof(result))) && (byte & 0x40))
+ result |= -((static_cast<int64_t>(1)) << shift);
+ *len = num_read;
+ return result;
+}
+
+void
+write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value)
+{
+ do
+ {
+ unsigned char current_byte = value & 0x7f;
+ value >>= 7;
+ if (value != 0)
+ {
+ current_byte |= 0x80;
+ }
+ buffer->push_back(current_byte);
+ }
+ while (value != 0);
+}
+
+size_t
+get_length_as_unsigned_LEB_128(uint64_t value)
+{
+ size_t length = 0;
+ do
+ {
+ unsigned char current_byte = value & 0x7f;
+ value >>= 7;
+ if (value != 0)
+ {
+ current_byte |= 0x80;
+ }
+ length++;
+ }
+ while (value != 0);
+ return length;
+}
+
+} // End namespace gold.
--- /dev/null
+// int_encoding.h -- variable length and unaligned integers -*- C++ -*-
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Doug Kwan <dougkwan@google.com> by refactoring scattered
+// contents from other files in gold. Original code written by Ian
+// Lance Taylor <iant@google.com> and Caleb Howe <cshowe@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+#ifndef GOLD_INT_ENCODING_H
+#define GOLD_INT_ENCODING_H
+
+#include <vector>
+#include "elfcpp.h"
+#include "target.h"
+#include "parameters.h"
+
+namespace gold
+{
+
+//
+// LEB 128 encoding support.
+//
+
+// Read a ULEB 128 encoded integer from BUFFER. Return the length of the
+// encoded integer at the location PLEN.
+
+uint64_t
+read_unsigned_LEB_128(const unsigned char* buffer, size_t* plen);
+
+// Read an SLEB 128 encoded integer from BUFFER. Return the length of the
+// encoded integer at the location PLEN.
+
+int64_t
+read_signed_LEB_128(const unsigned char* buffer, size_t* plen);
+
+// Write a ULEB 128 encoded VALUE to BUFFER.
+
+void
+write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value);
+
+// Return the ULEB 128 encoded size of VALUE.
+
+size_t
+get_length_as_unsigned_LEB_128(uint64_t value);
+
+//
+// Unaligned integer encoding support.
+//
+
+// Insert VALSIZE-bit integer VALUE into DESTINATION.
+
+template <int valsize>
+void insert_into_vector(std::vector<unsigned char>* destination,
+ typename elfcpp::Valtype_base<valsize>::Valtype value)
+{
+ unsigned char buffer[valsize / 8];
+ if (parameters->target().is_big_endian())
+ elfcpp::Swap_unaligned<valsize, true>::writeval(buffer, value);
+ else
+ elfcpp::Swap_unaligned<valsize, false>::writeval(buffer, value);
+ destination->insert(destination->end(), buffer, buffer + valsize / 8);
+}
+
+// Read a possibly unaligned integer of SIZE. Update SOURCE after read.
+
+template <int valsize>
+typename elfcpp::Valtype_base<valsize>::Valtype
+read_from_pointer(unsigned char** source)
+{
+ typename elfcpp::Valtype_base<valsize>::Valtype return_value;
+ if (parameters->target().is_big_endian())
+ return_value = elfcpp::Swap_unaligned<valsize, true>::readval(*source);
+ else
+ return_value = elfcpp::Swap_unaligned<valsize, false>::readval(*source);
+ *source += valsize / 8;
+ return return_value;
+}
+
+// Same as the above except for use with const unsigned char data.
+
+template <int valsize>
+typename elfcpp::Valtype_base<valsize>::Valtype
+read_from_pointer(const unsigned char** source)
+{
+ typename elfcpp::Valtype_base<valsize>::Valtype return_value;
+ if (parameters->target().is_big_endian())
+ return_value = elfcpp::Swap_unaligned<valsize, true>::readval(*source);
+ else
+ return_value = elfcpp::Swap_unaligned<valsize, false>::readval(*source);
+ *source += valsize / 8;
+ return return_value;
+}
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_INT_ENCODING_H)
#include "dwarf.h"
#include "dwarf_reader.h"
#include "reduced_debug_output.h"
+#include "int_encoding.h"
#include <vector>
namespace gold
{
-void
-write_unsigned_LEB_128(std::vector<unsigned char>* buffer, uint64_t value)
-{
- do
- {
- unsigned char current_byte = value & 0x7f;
- value >>= 7;
- if (value != 0)
- {
- current_byte |= 0x80;
- }
- buffer->push_back(current_byte);
- }
- while (value != 0);
-}
-
-size_t
-get_length_as_unsigned_LEB_128(uint64_t value)
-{
- size_t length = 0;
- do
- {
- unsigned char current_byte = value & 0x7f;
- value >>= 7;
- if (value != 0)
- {
- current_byte |= 0x80;
- }
- length++;
- }
- while (value != 0);
- return length;
-}
-
-template <int valsize>
-void insert_into_vector(std::vector<unsigned char>* destination,
- typename elfcpp::Valtype_base<valsize>::Valtype value)
-{
- unsigned char buffer[valsize / 8];
- if (parameters->target().is_big_endian())
- elfcpp::Swap_unaligned<valsize, true>::writeval(buffer, value);
- else
- elfcpp::Swap_unaligned<valsize, false>::writeval(buffer, value);
- destination->insert(destination->end(), buffer, buffer + valsize / 8);
-}
-
-template <int valsize>
-typename elfcpp::Valtype_base<valsize>::Valtype
-read_from_pointer(unsigned char** source)
-{
- typename elfcpp::Valtype_base<valsize>::Valtype return_value;
- if (parameters->target().is_big_endian())
- return_value = elfcpp::Swap_unaligned<valsize, true>::readval(*source);
- else
- return_value = elfcpp::Swap_unaligned<valsize, false>::readval(*source);
- *source += valsize / 8;
- return return_value;
-}
-
// Given a pointer to the beginning of a die and the beginning of the associated
// abbreviation fills in die_end with the end of the information entry. If
// successful returns true. Get_die_end also takes a pointer to the end of the
projects / binutils-gdb.git / commitdiff