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Implement PHDRS.

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This commit is contained in:
Ian Lance Taylor
2008-02-04 22:54:31 +00:00
parent 15893b88b0
commit 1c4f3631bd
13 changed files with 934 additions and 72 deletions
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44
gold/script-sections.h
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@@ -36,6 +36,8 @@ struct Parser_output_section_trailer;
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;
@@ -64,6 +66,12 @@ 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,
@@ -134,11 +142,22 @@ class Script_sections
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);
// Print the contents to the FILE. This is for debugging.
void
print(FILE*) const;
@@ -146,6 +165,8 @@ class Script_sections
private:
typedef std::vector<Sections_element*> Sections_elements;
typedef std::vector<Phdrs_element*> Phdrs_elements;
// Create segments.
Output_segment*
create_segments(Layout*);
@@ -158,6 +179,27 @@ class Script_sections
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.
@@ -166,6 +208,8 @@ class Script_sections
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_;
};
} // End namespace gold.