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authorCary Coutant <ccoutant@google.com>2008-09-19 22:54:57 +0000
committerCary Coutant <ccoutant@google.com>2008-09-19 22:54:57 +0000
commit89fc34211be8b1d74b83e4e2b18cfa4b4cf65ba9 (patch)
treecd5675e9053bb0b9b68d98253003c08bc5e28bb9 /gold/Makefile.am
parent14fc49fb1561bd620e790080ad27ed3890780b42 (diff)
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Add plugin functionality for link-time optimization (LTO).
include/: * plugin-api.h: New file. gold/: * configure.ac (plugins): Add --enable-plugins option. * configure: Regenerate. * config.in: Regenerate. * Makefile.am (LIBDL): New variable. (CCFILES): Add plugin.cc. (HFILES): Add plugin.h. (ldadd_var): Add LIBDL. * Makefile.in: Regenerate. * archive.cc: Include "plugin.h". (Archive::setup): Don't preread archive symbols when using a plugin. (Archive::get_file_and_offset): Add memsize parameter. Change callers. (Archive::get_elf_object_for_member): Call plugin hooks for claiming files. (Archive::include_member): Add symbols from plugin objects. * archive.h (Archive::get_file_and_offset): Add memsize parameter. * descriptors.cc (Descriptors::open): Check for file descriptors abandoned by plugins. (Descriptors::claim_for_plugin): New function. * descriptors.h (Descriptors::claim_for_plugin): New function. (Open_descriptor::is_claimed): New field. (claim_descriptor_for_plugin): New function. * fileread.cc (File_read::claim_for_plugin): New function. * fileread.h (File_read::claim_for_plugin): New function. (File_read::descriptor): New function. * gold.cc: Include "plugin.h". (queue_initial_tasks): Add task to call plugin hooks for generating new object files. * main.cc: Include "plugin.h". (main): Load plugin libraries. * object.h (Pluginobj): Declare. (Object::pluginobj): New function. (Object::do_pluginobj): New function. (Object::set_target): New function. * options.cc: Include "plugin.h". (General_options::parse_plugin): New function. (General_options::General_options): Initialize plugins_ field. (General_options::add_plugin): New function. * options.h (Plugin_manager): Declare. (General_options): Add --plugin option. (General_options::has_plugins): New function. (General_options::plugins): New function. (General_options::add_plugin): New function. (General_options::plugins_): New field. * plugin.cc: New file. * plugin.h: New file. * readsyms.cc: Include "plugin.h". (Read_symbols::do_read_symbols): Check for archive before checking for ELF file. Call plugin hooks to claim files. * resolve.cc (Symbol_table::resolve): Record when symbol is referenced from a real object file; force override when processing replacement files. * symtab.cc (Symbol::init_fields): Initialize in_real_elf_ field. (Symbol::init_base_object): Likewise. (Symbol::init_base_output_data): Likewise. (Symbol::init_base_output_segment): Likewise. (Symbol::init_base_constant): Likewise. (Symbol::init_base_undefined): Likewise. (Symbol::output_section): Assert that object is not a plugin. (Symbol_table::add_from_pluginobj): New function. (Symbol_table::sized_finalize_symbol): Treat symbols from plugins as undefined. (Symbol_table::sized_write_globals): Likewise. (Symbol_table::add_from_pluginobj): Instantiate template. * symtab.h (Sized_pluginobj): Declare. (Symbol::in_real_elf): New function. (Symbol::set_in_real_elf): New function. (Symbol::in_real_elf_): New field. (Symbol_table::add_from_pluginobj): New function. * testsuite/Makefile.am (AM_CFLAGS): New variable. (LIBDL): New variable. (LDADD): Add LIBDL. (check_PROGRAMS): Add plugin_test_1 and plugin_test_2. (check_SCRIPTS): Add plugin_test_1.sh and plugin_test_2.sh. (check_DATA): Add plugin_test_1.err and plugin_test_2.err. (MOSTLYCLEANFILES): Likewise. * testsuite/Makefile.in: Regenerate. * testsuite/plugin_test.c: New file. * testsuite/plugin_test_1.sh: New file. * testsuite/plugin_test_2.sh: New file.
Diffstat (limited to 'gold/Makefile.am')
-rw-r--r--gold/Makefile.am9
1 files changed, 8 insertions, 1 deletions
diff --git a/gold/Makefile.am b/gold/Makefile.am
index e706703..74db37a 100644
--- a/gold/Makefile.am
+++ b/gold/Makefile.am
@@ -19,6 +19,10 @@ INCLUDES = \
LIBIBERTY = ../libiberty/libiberty.a
+if PLUGINS
+LIBDL = -ldl
+endif
+
if THREADS
THREADSLIB = -lpthread
endif
@@ -53,6 +57,7 @@ CCFILES = \
options.cc \
output.cc \
parameters.cc \
+ plugin.cc \
readsyms.cc \
reduced_debug_output.cc \
reloc.cc \
@@ -90,6 +95,7 @@ HFILES = \
options.h \
output.h \
parameters.h \
+ plugin.h \
readsyms.h \
reduced_debug_output.h \
reloc.h \
@@ -122,7 +128,8 @@ libgold_a_SOURCES = $(CCFILES) $(HFILES) $(YFILES)
sources_var = main.cc
deps_var = $(TARGETOBJS) libgold.a $(LIBIBERTY) $(LIBINTL_DEP)
-ldadd_var = $(TARGETOBJS) libgold.a $(LIBIBERTY) $(LIBINTL) $(THREADSLIB)
+ldadd_var = $(TARGETOBJS) libgold.a $(LIBIBERTY) $(LIBINTL) \
+ $(THREADSLIB) $(LIBDL)
ld_new_SOURCES = $(sources_var)
ld_new_DEPENDENCIES = $(deps_var) $(LIBOBJS)