struct Input_section_spec;
class Expression;
class Sections_element;
+class Phdrs_element;
+class Output_data;
class Output_section_definition;
+class Output_section;
+class Output_segment;
class Script_sections
{
in_sections_clause() const
{ return this->in_sections_clause_; }
+ // Return whether we ever saw a PHDRS clause. We ignore the PHDRS
+ // clause unless we also saw a SECTIONS clause.
+ bool
+ saw_phdrs_clause() const
+ { return this->saw_sections_clause_ && this->phdrs_elements_ != NULL; }
+
// Start processing entries for an output section.
void
start_output_section(const char* name, size_t namelen,
void
add_symbol_assignment(const char* name, size_t length, Expression* value,
bool provide, bool hidden);
+
+ // Add an assignment to the special dot symbol.
+ void
+ add_dot_assignment(Expression* value);
+
// Add an assertion.
void
add_assertion(Expression* check, const char* message, size_t messagelen);
void
add_input_section(const Input_section_spec* spec, bool keep);
+ // Saw DATA_SEGMENT_ALIGN.
+ void
+ data_segment_align();
+
+ // Saw DATA_SEGMENT_RELRO_END.
+ void
+ data_segment_relro_end();
+
+ // Create any required sections.
+ void
+ create_sections(Layout*);
+
+ // Add any symbols we are defining to the symbol table.
+ void
+ add_symbols_to_table(Symbol_table*);
+
+ // Finalize symbol values and check assertions.
+ void
+ finalize_symbols(Symbol_table* symtab, const Layout* layout);
+
+ // Find the name of the output section to use for an input file name
+ // and section name. This returns a name, and sets
+ // *OUTPUT_SECTION_SLOT to point to the address where the actual
+ // output section may be stored.
+ // 1) If the input section should be discarded, this returns NULL
+ // and sets *OUTPUT_SECTION_SLOT to NULL.
+ // 2) If the input section is mapped by the SECTIONS clause, this
+ // returns the name to use for the output section (in permanent
+ // storage), and sets *OUTPUT_SECTION_SLOT to point to where the
+ // output section should be stored. **OUTPUT_SECTION_SLOT will be
+ // non-NULL if we have seen this output section already.
+ // 3) If the input section is not mapped by the SECTIONS clause,
+ // this returns SECTION_NAME, and sets *OUTPUT_SECTION_SLOT to
+ // NULL.
+ const char*
+ output_section_name(const char* file_name, const char* section_name,
+ Output_section*** output_section_slot);
+
+ // Place a marker for an orphan output section into the SECTIONS
+ // clause.
+ void
+ place_orphan(Output_section* os);
+
+ // Set the addresses of all the output sections. Return the segment
+ // which holds the file header and segment headers, if any.
+ Output_segment*
+ set_section_addresses(Symbol_table*, Layout*);
+
+ // Add a program header definition.
+ void
+ add_phdr(const char* name, size_t namelen, unsigned int type,
+ bool filehdr, bool phdrs, bool is_flags_valid, unsigned int flags,
+ Expression* load_address);
+
+ // Return the number of segments we expect to create based on the
+ // SECTIONS clause.
+ size_t
+ expected_segment_count(const Layout*) const;
+
+ // Add the file header and segment header to non-load segments as
+ // specified by the PHDRS clause.
+ void
+ put_headers_in_phdrs(Output_data* file_header, Output_data* segment_headers);
+
+ // Look for an output section by name and return the address, the
+ // load address, the alignment, and the size. This is used when an
+ // expression refers to an output section which was not actually
+ // created. This returns true if the section was found, false
+ // otherwise.
+ bool
+ get_output_section_info(const char* name, uint64_t* address,
+ uint64_t* load_address, uint64_t* addralign,
+ uint64_t* size) const;
+
// Print the contents to the FILE. This is for debugging.
void
print(FILE*) const;
private:
typedef std::vector<Sections_element*> Sections_elements;
+ typedef std::vector<Phdrs_element*> Phdrs_elements;
+
+ // Create segments.
+ Output_segment*
+ create_segments(Layout*);
+
+ // Create PT_NOTE and PT_TLS segments.
+ void
+ create_note_and_tls_segments(Layout*, const std::vector<Output_section*>*);
+
+ // Return whether the section is a BSS section.
+ static bool
+ is_bss_section(const Output_section*);
+
+ // Return the total size of the headers.
+ size_t
+ total_header_size(Layout* layout) const;
+
+ // Return the amount we have to subtract from the LMA to accomodate
+ // headers of the given size.
+ uint64_t
+ header_size_adjustment(uint64_t lma, size_t sizeof_headers) const;
+
+ // Create the segments from a PHDRS clause.
+ Output_segment*
+ create_segments_from_phdrs_clause(Layout* layout);
+
+ // Attach sections to segments from a PHDRS clause.
+ void
+ attach_sections_using_phdrs_clause(Layout*);
+
+ // Set addresses of segments from a PHDRS clause.
+ Output_segment*
+ set_phdrs_clause_addresses(Layout*);
+
// True if we ever saw a SECTIONS clause.
bool saw_sections_clause_;
// True if we are currently processing a SECTIONS clause.
Sections_elements* sections_elements_;
// The current output section, if there is one.
Output_section_definition* output_section_;
+ // The list of program headers in the PHDRS clause.
+ Phdrs_elements* phdrs_elements_;
+ // The index of the next Sections_element when we see
+ // DATA_SEGMENT_ALIGN.
+ size_t data_segment_align_index_;
+ // Whether we have seen DATA_SEGMENT_RELRO_END.
+ bool saw_relro_end_;
};
} // End namespace gold.