+2011-07-13 Sriraman Tallam <tmsriram@google.com>
+
+ * archive.cc (Archive::get_elf_object_for_member): Add extra parameter
+ to claim_file call.
+ * layout.cc (Layout::Layout): Initialize section_ordering_specified_,
+ input_section_position_, and input_section_glob_.
+ (read_layout_from_file): Call function section_ordering_specified.
+ * layout.h (is_section_ordering_specified): New function.
+ (section_ordering_specified): New function.
+ (section_ordering_specified_): New boolean member.
+ * main.cc(main): Call load_plugins after layout object is defined.
+ * output.cc (Output_section::add_input_section): Use
+ function section_ordering_specified to check if section ordering is
+ needed.
+ * output.cc (Output_section::add_relaxed_input_section): Use
+ function section_ordering_specified to check if section ordering is
+ needed.
+ (Output_section::update_section_layout): New function.
+ (Output_section::sort_attached_input_sections): Check if input section
+ must be reordered.
+ * output.h (Output_section::update_section_layout): New function.
+ * plugin.cc (get_section_count): New function.
+ (get_section_type): New function.
+ (get_section_name): New function.
+ (get_section_contents): New function.
+ (update_section_order): New function.
+ (allow_section_ordering): New function.
+ (Plugin::load): Add the new interfaces to the transfer vector.
+ (Plugin_manager::load_plugins): New parameter.
+ (Plugin_manager::all_symbols_read): New parameter.
+ (Plugin_manager::claim_file): New parameter. Save the elf object for
+ unclaimed objects.
+ (Plugin_manager::get_elf_object): New function.
+ (Plugin_manager::get_view): Change to directly use the bool to check
+ if get_view is called from claim_file_hook.
+ * plugin.h (input_objects): New function
+ (Plugin__manager::load_plugins): New parameter.
+ (Plugin_manager::claim_file): New parameter.
+ (Plugin_manager::get_elf_object): New function.
+ (Plugin_manager::in_claim_file_handler): New function.
+ (Plugin_manager::in_claim_file_handler_): New member.
+ (layout): New function.
+ * readsyms.cc (Read_symbols::do_read_symbols): Call the claim_file
+ handler with an extra parameter. Make the elf object before calling
+ claim_file handler.
+ * testsuite/plugin_test.c (get_section_count): New function pointer.
+ (get_section_type): New function pointer.
+ (get_section_name): New function pointer.
+ (get_section_contents): New function pointer.
+ (update_section_order): New function pointer.
+ (allow_section_ordering): New function pointer.
+ (onload): Check if the new interfaces exist.
+
2011-07-13 Ian Lance Taylor <iant@google.com>
* i386.cc (Target_i386::got_section): If -z now, make .got.plt a
{
Object* obj = parameters->options().plugins()->claim_file(input_file,
memoff,
- memsize);
+ memsize,
+ NULL);
if (obj != NULL)
{
// The input file was claimed by a plugin, and its symbols
any_postprocessing_sections_(false),
resized_signatures_(false),
have_stabstr_section_(false),
+ section_ordering_specified_(false),
incremental_inputs_(NULL),
record_output_section_data_from_script_(false),
script_output_section_data_list_(),
segment_states_(NULL),
relaxation_debug_check_(NULL),
+ input_section_position_(),
+ input_section_glob_(),
incremental_base_(NULL),
free_list_()
{
}
// Read the sequence of input sections from the file specified with
-// --section-ordering-file.
+// option --section-ordering-file.
void
Layout::read_layout_from_file()
std::getline(in, line); // this chops off the trailing \n, if any
unsigned int position = 1;
+ this->set_section_ordering_specified();
while (in)
{
const char* name, const elfcpp::Shdr<size, big_endian>& shdr,
unsigned int reloc_shndx, unsigned int reloc_type, off_t* offset);
+ bool
+ is_section_ordering_specified()
+ { return this->section_ordering_specified_; }
+
+ void
+ set_section_ordering_specified()
+ { this->section_ordering_specified_ = true; }
+
// For incremental updates, allocate a block of memory from the
// free list. Find a block starting at or after MINOFF.
off_t
unsigned int
find_section_order_index(const std::string&);
+ // Read the sequence of input sections from the file specified with
+ // linker option --section-ordering-file.
void
read_layout_from_file();
bool resized_signatures_;
// Whether we have created a .stab*str output section.
bool have_stabstr_section_;
+ // True if the input sections in the output sections should be sorted
+ // as specified in a section ordering file.
+ bool section_ordering_specified_;
// In incremental build, holds information check the inputs and build the
// .gnu_incremental_inputs section.
Incremental_inputs* incremental_inputs_;
if (parameters->options().relocatable())
command_line.script_options().version_script_info()->clear();
- // Load plugin libraries.
- if (command_line.options().has_plugins())
- command_line.options().plugins()->load_plugins();
-
// The work queue.
Workqueue workqueue(command_line.options());
if (parameters->options().section_ordering_file())
layout.read_layout_from_file();
+ // Load plugin libraries.
+ if (command_line.options().has_plugins())
+ command_line.options().plugins()->load_plugins(&layout);
+
// Get the search path from the -L options.
Dirsearch search_path;
search_path.initialize(&workqueue, &command_line.options().library_path());
&& (sh_flags & elfcpp::SHF_EXECINSTR) != 0
&& parameters->target().has_code_fill()
&& (parameters->target().may_relax()
- || parameters->options().section_ordering_file()))
+ || layout->is_section_ordering_specified()))
{
gold_assert(this->fills_.empty());
this->generate_code_fills_at_write_ = true;
|| this->must_sort_attached_input_sections()
|| parameters->options().user_set_Map()
|| parameters->target().may_relax()
- || parameters->options().section_ordering_file())
+ || layout->is_section_ordering_specified())
{
Input_section isecn(object, shndx, input_section_size, addralign);
- if (parameters->options().section_ordering_file())
+ if (layout->is_section_ordering_specified())
{
unsigned int section_order_index =
layout->find_section_order_index(std::string(secname));
// If the --section-ordering-file option is used to specify the order of
// sections, we need to keep track of sections.
- if (parameters->options().section_ordering_file())
+ if (layout->is_section_ordering_specified())
{
unsigned int section_order_index =
layout->find_section_order_index(name);
return s1_secn_index < s2_secn_index;
}
+// This updates the section order index of input sections according to the
+// the order specified in the mapping from Section id to order index.
+
+void
+Output_section::update_section_layout(
+ const Section_layout_order& order_map)
+{
+ for (Input_section_list::iterator p = this->input_sections_.begin();
+ p != this->input_sections_.end();
+ ++p)
+ {
+ if (p->is_input_section()
+ || p->is_relaxed_input_section())
+ {
+ Object* obj = (p->is_input_section()
+ ? p->relobj()
+ : p->relaxed_input_section()->relobj());
+ unsigned int shndx = p->shndx();
+ Section_layout_order::const_iterator it
+ = order_map.find(Section_id(obj, shndx));
+ if (it == order_map.end())
+ continue;
+ unsigned int section_order_index = it->second;
+ if (section_order_index != 0)
+ {
+ p->set_section_order_index(section_order_index);
+ this->set_input_section_order_specified();
+ }
+ }
+ }
+}
+
// Sort the input sections attached to an output section.
void
}
else
{
- gold_assert(parameters->options().section_ordering_file());
+ gold_assert(this->input_section_order_specified());
std::sort(sort_list.begin(), sort_list.end(),
Input_section_sort_section_order_index_compare());
}
flags() const
{ return this->flags_; }
+ typedef std::map<Section_id, unsigned int> Section_layout_order;
+
+ void
+ update_section_layout(const Section_layout_order& order_map);
+
// Update the output section flags based on input section flags.
void
update_flags_for_input_section(elfcpp::Elf_Xword flags);
static enum ld_plugin_status
message(int level, const char *format, ...);
+static enum ld_plugin_status
+get_input_section_count(const void* handle, unsigned int* count);
+
+static enum ld_plugin_status
+get_input_section_type(const struct ld_plugin_section section,
+ unsigned int* type);
+
+static enum ld_plugin_status
+get_input_section_name(const struct ld_plugin_section section,
+ char** section_name_ptr);
+
+static enum ld_plugin_status
+get_input_section_contents(const struct ld_plugin_section section,
+ const unsigned char** section_contents,
+ size_t* len);
+
+static enum ld_plugin_status
+update_section_order(const struct ld_plugin_section *section_list,
+ unsigned int num_sections);
+
+static enum ld_plugin_status
+allow_section_ordering();
+
};
#endif // ENABLE_PLUGINS
sscanf(ver, "%d.%d", &major, &minor);
// Allocate and populate a transfer vector.
- const int tv_fixed_size = 17;
+ const int tv_fixed_size = 23;
+
int tv_size = this->args_.size() + tv_fixed_size;
ld_plugin_tv* tv = new ld_plugin_tv[tv_size];
tv[i].tv_u.tv_set_extra_library_path = set_extra_library_path;
++i;
+ tv[i].tv_tag = LDPT_GET_INPUT_SECTION_COUNT;
+ tv[i].tv_u.tv_get_input_section_count = get_input_section_count;
+
+ ++i;
+ tv[i].tv_tag = LDPT_GET_INPUT_SECTION_TYPE;
+ tv[i].tv_u.tv_get_input_section_type = get_input_section_type;
+
+ ++i;
+ tv[i].tv_tag = LDPT_GET_INPUT_SECTION_NAME;
+ tv[i].tv_u.tv_get_input_section_name = get_input_section_name;
+
+ ++i;
+ tv[i].tv_tag = LDPT_GET_INPUT_SECTION_CONTENTS;
+ tv[i].tv_u.tv_get_input_section_contents = get_input_section_contents;
+
+ ++i;
+ tv[i].tv_tag = LDPT_UPDATE_SECTION_ORDER;
+ tv[i].tv_u.tv_update_section_order = update_section_order;
+
+ ++i;
+ tv[i].tv_tag = LDPT_ALLOW_SECTION_ORDERING;
+ tv[i].tv_u.tv_allow_section_ordering = allow_section_ordering;
+
+ ++i;
tv[i].tv_tag = LDPT_NULL;
tv[i].tv_u.tv_val = 0;
// Load all plugin libraries.
void
-Plugin_manager::load_plugins()
+Plugin_manager::load_plugins(Layout* layout)
{
+ this->layout_ = layout;
for (this->current_ = this->plugins_.begin();
this->current_ != this->plugins_.end();
++this->current_)
Pluginobj*
Plugin_manager::claim_file(Input_file* input_file, off_t offset,
- off_t filesize)
+ off_t filesize, Object* elf_object)
{
if (this->in_replacement_phase_)
return NULL;
this->plugin_input_file_.offset = offset;
this->plugin_input_file_.filesize = filesize;
this->plugin_input_file_.handle = reinterpret_cast<void*>(handle);
+ if (elf_object != NULL)
+ this->objects_.push_back(elf_object);
+ this->in_claim_file_handler_ = true;
for (this->current_ = this->plugins_.begin();
this->current_ != this->plugins_.end();
if ((*this->current_)->claim_file(&this->plugin_input_file_))
{
this->any_claimed_ = true;
+ this->in_claim_file_handler_ = false;
- if (this->objects_.size() > handle)
- return this->objects_[handle];
+ if (this->objects_.size() > handle
+ && this->objects_[handle]->pluginobj() != NULL)
+ return this->objects_[handle]->pluginobj();
// If the plugin claimed the file but did not call the
// add_symbols callback, we need to create the Pluginobj now.
}
}
+ this->in_claim_file_handler_ = false;
return NULL;
}
void
Plugin_manager::all_symbols_read(Workqueue* workqueue, Task* task,
Input_objects* input_objects,
- Symbol_table* symtab, Layout* layout,
+ Symbol_table* symtab,
Dirsearch* dirpath, Mapfile* mapfile,
Task_token** last_blocker)
{
this->task_ = task;
this->input_objects_ = input_objects;
this->symtab_ = symtab;
- this->layout_ = layout;
this->dirpath_ = dirpath;
this->mapfile_ = mapfile;
this->this_blocker_ = NULL;
Plugin_manager::make_plugin_object(unsigned int handle)
{
// Make sure we aren't asked to make an object for the same handle twice.
- if (this->objects_.size() != handle)
+ if (this->objects_.size() != handle
+ && this->objects_[handle]->pluginobj() != NULL)
return NULL;
Pluginobj* obj = make_sized_plugin_object(this->input_file_,
this->plugin_input_file_.offset,
this->plugin_input_file_.filesize);
+
+
+ // If the elf object for this file was pushed into the objects_ vector, delete
+ // it to make room for the Pluginobj as this file is claimed.
+ if (this->objects_.size() != handle)
+ this->objects_.pop_back();
+
this->objects_.push_back(obj);
return obj;
}
Plugin_manager::get_input_file(unsigned int handle,
struct ld_plugin_input_file* file)
{
- Pluginobj* obj = this->object(handle);
+ Pluginobj* obj = this->object(handle)->pluginobj();
if (obj == NULL)
return LDPS_BAD_HANDLE;
ld_plugin_status
Plugin_manager::release_input_file(unsigned int handle)
{
- Pluginobj* obj = this->object(handle);
+ if (this->object(handle) == NULL)
+ return LDPS_BAD_HANDLE;
+
+ Pluginobj* obj = this->object(handle)->pluginobj();
+
if (obj == NULL)
return LDPS_BAD_HANDLE;
return LDPS_OK;
}
+// Get the elf object corresponding to the handle. Return NULL if we
+// found a Pluginobj instead.
+
+Object*
+Plugin_manager::get_elf_object(const void* handle)
+{
+ Object* obj = this->object(
+ static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)));
+
+ // The object should not be a Pluginobj.
+ if (obj == NULL
+ || obj->pluginobj() != NULL)
+ return NULL;
+
+ return obj;
+}
+
ld_plugin_status
Plugin_manager::get_view(unsigned int handle, const void **viewp)
{
off_t offset;
size_t filesize;
Input_file *input_file;
- if (this->objects_.size() == handle)
+ if (this->in_claim_file_handler_)
{
// We are being called from the claim_file hook.
const struct ld_plugin_input_file &f = this->plugin_input_file_;
else
{
// An already claimed file.
- Pluginobj* obj = this->object(handle);
+ if (this->object(handle) == NULL)
+ return LDPS_BAD_HANDLE;
+ Pluginobj* obj = this->object(handle)->pluginobj();
if (obj == NULL)
return LDPS_BAD_HANDLE;
offset = obj->offset();
this,
this->input_objects_,
this->symtab_,
- this->layout_,
this->dirpath_,
this->mapfile_,
&this->this_blocker_);
get_symbols(const void* handle, int nsyms, ld_plugin_symbol* syms)
{
gold_assert(parameters->options().has_plugins());
- Pluginobj* obj = parameters->options().plugins()->object(
- static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)));
+ Object* obj = parameters->options().plugins()->object(
+ static_cast<unsigned int>(reinterpret_cast<intptr_t>(handle)));
if (obj == NULL)
return LDPS_ERR;
- return obj->get_symbol_resolution_info(nsyms, syms);
+ Pluginobj* plugin_obj = obj->pluginobj();
+ if (plugin_obj == NULL)
+ return LDPS_ERR;
+ return plugin_obj->get_symbol_resolution_info(nsyms, syms);
}
// Add a new (real) input file generated by a plugin.
return LDPS_OK;
}
+// Get the section count of the object corresponding to the handle. This
+// plugin interface can only be called in the claim_file handler of the plugin.
+
+static enum ld_plugin_status
+get_input_section_count(const void* handle, unsigned int* count)
+{
+ gold_assert(parameters->options().has_plugins());
+
+ if (!parameters->options().plugins()->in_claim_file_handler())
+ return LDPS_ERR;
+
+ Object* obj = parameters->options().plugins()->get_elf_object(handle);
+
+ if (obj == NULL)
+ return LDPS_ERR;
+
+ *count = obj->shnum();
+ return LDPS_OK;
+}
+
+// Get the type of the specified section in the object corresponding
+// to the handle. This plugin interface can only be called in the
+// claim_file handler of the plugin.
+
+static enum ld_plugin_status
+get_input_section_type(const struct ld_plugin_section section,
+ unsigned int* type)
+{
+ gold_assert(parameters->options().has_plugins());
+
+ if (!parameters->options().plugins()->in_claim_file_handler())
+ return LDPS_ERR;
+
+ Object* obj
+ = parameters->options().plugins()->get_elf_object(section.handle);
+
+ if (obj == NULL)
+ return LDPS_BAD_HANDLE;
+
+ *type = obj->section_type(section.shndx);
+ return LDPS_OK;
+}
+
+// Get the name of the specified section in the object corresponding
+// to the handle. This plugin interface can only be called in the
+// claim_file handler of the plugin.
+
+static enum ld_plugin_status
+get_input_section_name(const struct ld_plugin_section section,
+ char** section_name_ptr)
+{
+ gold_assert(parameters->options().has_plugins());
+
+ if (!parameters->options().plugins()->in_claim_file_handler())
+ return LDPS_ERR;
+
+ Object* obj
+ = parameters->options().plugins()->get_elf_object(section.handle);
+
+ if (obj == NULL)
+ return LDPS_BAD_HANDLE;
+
+ // Check if the object is locked before getting the section name.
+ gold_assert(obj->is_locked());
+
+ const std::string section_name = obj->section_name(section.shndx);
+ *section_name_ptr = static_cast<char*>(malloc(section_name.length() + 1));
+ memcpy(*section_name_ptr, section_name.c_str(), section_name.length() + 1);
+ return LDPS_OK;
+}
+
+// Get the contents of the specified section in the object corresponding
+// to the handle. This plugin interface can only be called in the
+// claim_file handler of the plugin.
+
+static enum ld_plugin_status
+get_input_section_contents(const struct ld_plugin_section section,
+ const unsigned char** section_contents_ptr,
+ size_t* len)
+{
+ gold_assert(parameters->options().has_plugins());
+
+ if (!parameters->options().plugins()->in_claim_file_handler())
+ return LDPS_ERR;
+
+ Object* obj
+ = parameters->options().plugins()->get_elf_object(section.handle);
+
+ if (obj == NULL)
+ return LDPS_BAD_HANDLE;
+
+ // Check if the object is locked before getting the section contents.
+ gold_assert(obj->is_locked());
+
+ section_size_type plen;
+ *section_contents_ptr
+ = obj->section_contents(section.shndx, &plen, false);
+ *len = plen;
+ return LDPS_OK;
+}
+
+// Specify the ordering of sections in the final layout. The sections are
+// specified as (handle,shndx) pairs in the two arrays in the order in
+// which they should appear in the final layout.
+
+static enum ld_plugin_status
+update_section_order(const struct ld_plugin_section *section_list,
+ unsigned int num_sections)
+{
+ gold_assert(parameters->options().has_plugins());
+
+ if (num_sections == 0)
+ return LDPS_OK;
+
+ if (section_list == NULL)
+ return LDPS_ERR;
+
+ std::map<Section_id, unsigned int> order_map;
+
+ for (unsigned int i = 0; i < num_sections; ++i)
+ {
+ Object* obj = parameters->options().plugins()->get_elf_object(
+ section_list[i].handle);
+ if (obj == NULL)
+ return LDPS_BAD_HANDLE;
+ unsigned int shndx = section_list[i].shndx;
+ Section_id secn_id(obj, shndx);
+ order_map[secn_id] = i + 1;
+ }
+
+ Layout* layout = parameters->options().plugins()->layout();
+ gold_assert (layout != NULL);
+
+ for (Layout::Section_list::const_iterator p = layout->section_list().begin();
+ p != layout->section_list().end();
+ ++p)
+ (*p)->update_section_layout(order_map);
+
+ return LDPS_OK;
+}
+
+// Let the linker know that the sections could be reordered.
+
+static enum ld_plugin_status
+allow_section_ordering()
+{
+ gold_assert(parameters->options().has_plugins());
+ Layout* layout = parameters->options().plugins()->layout();
+ layout->set_section_ordering_specified();
+ return LDPS_OK;
+}
+
#endif // ENABLE_PLUGINS
// Allocate a Pluginobj object of the appropriate size and endianness.
: plugins_(), objects_(), deferred_layout_objects_(), input_file_(NULL),
plugin_input_file_(), rescannable_(), undefined_symbols_(),
any_claimed_(false), in_replacement_phase_(false), any_added_(false),
+ in_claim_file_handler_(false),
options_(options), workqueue_(NULL), task_(NULL), input_objects_(NULL),
symtab_(NULL), layout_(NULL), dirpath_(NULL), mapfile_(NULL),
this_blocker_(NULL), extra_search_path_()
// Load all plugin libraries.
void
- load_plugins();
+ load_plugins(Layout* layout);
// Call the plugin claim-file handlers in turn to see if any claim the file.
Pluginobj*
- claim_file(Input_file* input_file, off_t offset, off_t filesize);
+ claim_file(Input_file* input_file, off_t offset, off_t filesize,
+ Object* elf_object);
+
+ // Get the object associated with the handle and check if it is an elf object.
+ // If it is not a Pluginobj, it is an elf object.
+ Object*
+ get_elf_object(const void* handle);
+
+ // True if the claim_file handler of the plugins is being called.
+ bool
+ in_claim_file_handler()
+ { return in_claim_file_handler_; }
// Let the plugin manager save an archive for later rescanning.
// This takes ownership of the Archive pointer.
void
all_symbols_read(Workqueue* workqueue, Task* task,
Input_objects* input_objects, Symbol_table* symtab,
- Layout* layout, Dirsearch* dirpath, Mapfile* mapfile,
+ Dirsearch* dirpath, Mapfile* mapfile,
Task_token** last_blocker);
// Tell the plugin manager that we've a new undefined symbol which
Pluginobj*
make_plugin_object(unsigned int handle);
- // Return the Pluginobj associated with the given HANDLE.
- Pluginobj*
+ // Return the object associated with the given HANDLE.
+ Object*
object(unsigned int handle) const
{
if (handle >= this->objects_.size())
in_replacement_phase() const
{ return this->in_replacement_phase_; }
+ Input_objects*
+ input_objects() const
+ { return this->input_objects_; }
+
+ Layout*
+ layout()
+ { return this->layout_; }
+
private:
Plugin_manager(const Plugin_manager&);
Plugin_manager& operator=(const Plugin_manager&);
};
typedef std::list<Plugin*> Plugin_list;
- typedef std::vector<Pluginobj*> Object_list;
+ typedef std::vector<Object*> Object_list;
typedef std::vector<Relobj*> Deferred_layout_list;
typedef std::vector<Rescannable> Rescannable_list;
typedef std::vector<Symbol*> Undefined_symbol_list;
// Whether any input files or libraries were added by a plugin.
bool any_added_;
+ // Set to true when the claim_file handler of a plugin is called.
+ bool in_claim_file_handler_;
+
const General_options& options_;
Workqueue* workqueue_;
Task* task_;
}
}
+ Object* elf_obj = NULL;
+ bool unconfigured;
+ bool* punconfigured = NULL;
+ if (is_elf)
+ {
+ // This is an ELF object.
+
+ unconfigured = false;
+ punconfigured = (input_file->will_search_for()
+ ? &unconfigured
+ : NULL);
+ elf_obj = make_elf_object(input_file->filename(),
+ input_file, 0, ehdr, read_size,
+ punconfigured);
+ }
+
if (parameters->options().has_plugins())
{
Pluginobj* obj = parameters->options().plugins()->claim_file(input_file,
- 0, filesize);
+ 0, filesize,
+ elf_obj);
if (obj != NULL)
{
+ // Delete the elf_obj, this file has been claimed.
+ if (elf_obj != NULL)
+ delete elf_obj;
+
// The input file was claimed by a plugin, and its symbols
// have been provided by the plugin.
{
// This is an ELF object.
- bool unconfigured = false;
- bool* punconfigured = (input_file->will_search_for()
- ? &unconfigured
- : NULL);
- Object* obj = make_elf_object(input_file->filename(),
- input_file, 0, ehdr, read_size,
- punconfigured);
- if (obj == NULL)
+ if (elf_obj == NULL)
{
if (unconfigured)
{
}
Read_symbols_data* sd = new Read_symbols_data;
- obj->read_symbols(sd);
+ elf_obj->read_symbols(sd);
// Opening the file locked it, so now we need to unlock it. We
// need to unlock it before queuing the Add_symbols task,
if (this->member_ != NULL)
{
this->member_->sd_ = sd;
- this->member_->obj_ = obj;
+ this->member_->obj_ = elf_obj;
this->member_->arg_serial_ =
this->input_argument_->file().arg_serial();
return true;
this->dirindex_,
this->mapfile_,
this->input_argument_,
- obj,
+ elf_obj,
NULL,
sd,
this->this_blocker_,
static ld_plugin_message message = NULL;
static ld_plugin_get_input_file get_input_file = NULL;
static ld_plugin_release_input_file release_input_file = NULL;
+static ld_plugin_get_input_section_count get_input_section_count = NULL;
+static ld_plugin_get_input_section_type get_input_section_type = NULL;
+static ld_plugin_get_input_section_name get_input_section_name = NULL;
+static ld_plugin_get_input_section_contents get_input_section_contents = NULL;
+static ld_plugin_update_section_order update_section_order = NULL;
+static ld_plugin_allow_section_ordering allow_section_ordering = NULL;
#define MAXOPTS 10
case LDPT_RELEASE_INPUT_FILE:
release_input_file = entry->tv_u.tv_release_input_file;
break;
+ case LDPT_GET_INPUT_SECTION_COUNT:
+ get_input_section_count = *entry->tv_u.tv_get_input_section_count;
+ break;
+ case LDPT_GET_INPUT_SECTION_TYPE:
+ get_input_section_type = *entry->tv_u.tv_get_input_section_type;
+ break;
+ case LDPT_GET_INPUT_SECTION_NAME:
+ get_input_section_name = *entry->tv_u.tv_get_input_section_name;
+ break;
+ case LDPT_GET_INPUT_SECTION_CONTENTS:
+ get_input_section_contents = *entry->tv_u.tv_get_input_section_contents;
+ break;
+ case LDPT_UPDATE_SECTION_ORDER:
+ update_section_order = *entry->tv_u.tv_update_section_order;
+ break;
+ case LDPT_ALLOW_SECTION_ORDERING:
+ allow_section_ordering = *entry->tv_u.tv_allow_section_ordering;
+ break;
default:
break;
}
return LDPS_ERR;
}
+ if (get_input_section_count == NULL)
+ {
+ fprintf(stderr, "tv_get_input_section_count interface missing\n");
+ return LDPS_ERR;
+ }
+
+ if (get_input_section_type == NULL)
+ {
+ fprintf(stderr, "tv_get_input_section_type interface missing\n");
+ return LDPS_ERR;
+ }
+
+ if (get_input_section_name == NULL)
+ {
+ fprintf(stderr, "tv_get_input_section_name interface missing\n");
+ return LDPS_ERR;
+ }
+
+ if (get_input_section_contents == NULL)
+ {
+ fprintf(stderr, "tv_get_input_section_contents interface missing\n");
+ return LDPS_ERR;
+ }
+
+ if (update_section_order == NULL)
+ {
+ fprintf(stderr, "tv_update_section_order interface missing\n");
+ return LDPS_ERR;
+ }
+
+ if (allow_section_ordering == NULL)
+ {
+ fprintf(stderr, "tv_allow_section_ordering interface missing\n");
+ return LDPS_ERR;
+ }
+
return LDPS_OK;
}
+2011-07-13 Sriraman Tallam <tmsriram@google.com>
+
+ * plugin-api.h
+ (ld_plugin_section): New struct.
+ (ld_plugin_get_section_count): New typedef.
+ (ld_plugin_get_section_type): New typedef.
+ (ld_plugin_get_section_name): New typedef.
+ (ld_plugin_get_section_contents): New typedef.
+ (ld_plugin_update_section_order): New typedef.
+ (ld_plugin_allow_section_ordering): New typedef.
+ (LDPT_GET_SECTION_COUNT): New enum value.
+ (LDPT_GET_SECTION_TYPE): New enum value.
+ (LDPT_GET_SECTION_NAME): New enum value.
+ (LDPT_GET_SECTION_CONTENTS): New enum value.
+ (LDPT_UPDATE_SECTION_ORDER): New enum value.
+ (LDPT_ALLOW_SECTION_ORDERING): New enum value.
+ (tv_get_section_count): New struct members.
+ (tv_get_section_type): New struct members.
+ (tv_get_section_name): New struct members.
+ (tv_get_section_contents): New struct members.
+ (tv_update_section_order): New struct members.
+ (tv_allow_section_ordering): New struct members.
+
2011-07-11 Catherine Moore <clm@codesourcery.com>
* bfdlink.h (flag_type): New enumeration.
int resolution;
};
+/* An object's section. */
+
+struct ld_plugin_section
+{
+ const void* handle;
+ unsigned int shndx;
+};
+
/* Whether the symbol is a definition, reference, or common, weak or not. */
enum ld_plugin_symbol_kind
enum ld_plugin_status
(*ld_plugin_message) (int level, const char *format, ...);
+/* The linker's interface for retrieving the number of sections in an object.
+ The handle is obtained in the claim_file handler. This interface should
+ only be invoked in the claim_file handler. This function sets *COUNT to
+ the number of sections in the object. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_get_input_section_count) (const void* handle, unsigned int *count);
+
+/* The linker's interface for retrieving the section type of a specific
+ section in an object. This interface should only be invoked in the
+ claim_file handler. This function sets *TYPE to an ELF SHT_xxx value. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_get_input_section_type) (const struct ld_plugin_section section,
+ unsigned int *type);
+
+/* The linker's interface for retrieving the name of a specific section in
+ an object. This interface should only be invoked in the claim_file handler.
+ This function sets *SECTION_NAME_PTR to a null-terminated buffer allocated
+ by malloc. The plugin must free *SECTION_NAME_PTR. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_get_input_section_name) (const struct ld_plugin_section section,
+ char **section_name_ptr);
+
+/* The linker's interface for retrieving the contents of a specific section
+ in an object. This interface should only be invoked in the claim_file
+ handler. This function sets *SECTION_CONTENTS to point to a buffer that is
+ valid until clam_file handler returns. It sets *LEN to the size of the
+ buffer. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_get_input_section_contents) (const struct ld_plugin_section section,
+ const unsigned char **section_contents,
+ size_t* len);
+
+/* The linker's interface for specifying the desired order of sections.
+ The sections should be specifed using the array SECTION_LIST in the
+ order in which they should appear in the final layout. NUM_SECTIONS
+ specifies the number of entries in each array. This should be invoked
+ in the all_symbols_read handler. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_update_section_order) (const struct ld_plugin_section *section_list,
+ unsigned int num_sections);
+
+/* The linker's interface for specifying that reordering of sections is
+ desired so that the linker can prepare for it. This should be invoked
+ before update_section_order, preferably in the claim_file handler. */
+
+typedef
+enum ld_plugin_status
+(*ld_plugin_allow_section_ordering) (void);
+
enum ld_plugin_level
{
LDPL_INFO,
LDPT_OUTPUT_NAME,
LDPT_SET_EXTRA_LIBRARY_PATH,
LDPT_GNU_LD_VERSION,
- LDPT_GET_VIEW
+ LDPT_GET_VIEW,
+ LDPT_GET_INPUT_SECTION_COUNT,
+ LDPT_GET_INPUT_SECTION_TYPE,
+ LDPT_GET_INPUT_SECTION_NAME,
+ LDPT_GET_INPUT_SECTION_CONTENTS,
+ LDPT_UPDATE_SECTION_ORDER,
+ LDPT_ALLOW_SECTION_ORDERING
};
/* The plugin transfer vector. */
ld_plugin_release_input_file tv_release_input_file;
ld_plugin_add_input_library tv_add_input_library;
ld_plugin_set_extra_library_path tv_set_extra_library_path;
+ ld_plugin_get_input_section_count tv_get_input_section_count;
+ ld_plugin_get_input_section_type tv_get_input_section_type;
+ ld_plugin_get_input_section_name tv_get_input_section_name;
+ ld_plugin_get_input_section_contents tv_get_input_section_contents;
+ ld_plugin_update_section_order tv_update_section_order;
+ ld_plugin_allow_section_ordering tv_allow_section_ordering;
} tv_u;
};
projects / external / binutils.git / commitdiff