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2011-04-28This commit was manufactured by cvs2svn to create tag 'cgen-cgen-snapshot-20110501cvs2svn
snapshot-20110501'. Sprout from gdb_7_3-branch 2011-03-31 14:40:12 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'gdb_7_3-branch'.' Cherrypick from master 2011-04-28 16:46:34 UTC Joseph Myers <joseph@codesourcery.com> ' * configure.ac (*-*-dragonfly*, *-*-freebsd*, *-*-netbsd*,': ChangeLog Makefile.def Makefile.in Makefile.tpl config.sub config/ChangeLog config/bootstrap-lto.mk configure configure.ac Delete: djunpack.bat include/COPYING include/COPYING3 include/ChangeLog include/ChangeLog-9103 include/MAINTAINERS include/alloca-conf.h include/ansidecl.h include/aout/ChangeLog include/aout/adobe.h include/aout/aout64.h include/aout/ar.h include/aout/dynix3.h include/aout/encap.h include/aout/host.h include/aout/hp.h include/aout/hp300hpux.h include/aout/hppa.h include/aout/ranlib.h include/aout/reloc.h include/aout/stab.def include/aout/stab_gnu.h include/aout/sun4.h include/bfdlink.h include/binary-io.h include/bout.h include/cgen/ChangeLog include/cgen/basic-modes.h include/cgen/basic-ops.h include/cgen/bitset.h include/coff/ChangeLog include/coff/ChangeLog-9103 include/coff/alpha.h include/coff/apollo.h include/coff/arm.h include/coff/aux-coff.h include/coff/ecoff.h include/coff/external.h include/coff/go32exe.h include/coff/h8300.h include/coff/h8500.h include/coff/i386.h include/coff/i860.h include/coff/i960.h include/coff/ia64.h include/coff/internal.h include/coff/m68k.h include/coff/m88k.h include/coff/mcore.h include/coff/mips.h include/coff/mipspe.h include/coff/or32.h include/coff/pe.h include/coff/powerpc.h include/coff/rs6000.h include/coff/rs6k64.h include/coff/sh.h include/coff/sparc.h include/coff/sym.h include/coff/symconst.h include/coff/ti.h include/coff/tic30.h include/coff/tic4x.h include/coff/tic54x.h include/coff/tic80.h include/coff/w65.h include/coff/we32k.h include/coff/x86_64.h include/coff/xcoff.h include/coff/z80.h include/coff/z8k.h include/demangle.h include/dis-asm.h include/dwarf2.h include/dyn-string.h include/elf/ChangeLog include/elf/ChangeLog-9103 include/elf/alpha.h include/elf/arc.h include/elf/arm.h include/elf/avr.h include/elf/bfin.h include/elf/common.h include/elf/cr16.h include/elf/cr16c.h include/elf/cris.h include/elf/crx.h include/elf/d10v.h include/elf/d30v.h include/elf/dlx.h include/elf/dwarf.h include/elf/external.h include/elf/fr30.h include/elf/frv.h include/elf/h8.h include/elf/hppa.h include/elf/i370.h include/elf/i386.h include/elf/i860.h include/elf/i960.h include/elf/ia64.h include/elf/internal.h include/elf/ip2k.h include/elf/iq2000.h include/elf/lm32.h include/elf/m32c.h include/elf/m32r.h include/elf/m68hc11.h include/elf/m68k.h include/elf/mcore.h include/elf/mep.h include/elf/microblaze.h include/elf/mips.h include/elf/mmix.h include/elf/mn10200.h include/elf/mn10300.h include/elf/moxie.h include/elf/msp430.h include/elf/mt.h include/elf/openrisc.h include/elf/or32.h include/elf/pj.h include/elf/ppc.h include/elf/ppc64.h include/elf/reloc-macros.h include/elf/rx.h include/elf/s390.h include/elf/score.h include/elf/sh.h include/elf/sparc.h include/elf/spu.h include/elf/tic6x-attrs.h include/elf/tic6x.h include/elf/v850.h include/elf/vax.h include/elf/vxworks.h include/elf/x86-64.h include/elf/xc16x.h include/elf/xstormy16.h include/elf/xtensa.h include/fibheap.h include/filenames.h include/floatformat.h include/fnmatch.h include/fopen-bin.h include/fopen-same.h include/fopen-vms.h include/gdb/ChangeLog include/gdb/callback.h include/gdb/fileio.h include/gdb/remote-sim.h include/gdb/signals.def include/gdb/signals.h include/gdb/sim-arm.h include/gdb/sim-bfin.h include/gdb/sim-cr16.h include/gdb/sim-d10v.h include/gdb/sim-frv.h include/gdb/sim-h8300.h include/gdb/sim-lm32.h include/gdb/sim-m32c.h include/gdb/sim-ppc.h include/gdb/sim-rx.h include/gdb/sim-sh.h include/gdbm.h include/getopt.h include/hashtab.h include/hp-symtab.h include/ieee.h include/libiberty.h include/lto-symtab.h include/md5.h include/nlm/ChangeLog include/nlm/alpha-ext.h include/nlm/common.h include/nlm/external.h include/nlm/i386-ext.h include/nlm/internal.h include/nlm/ppc-ext.h include/nlm/sparc32-ext.h include/oasys.h include/objalloc.h include/obstack.h include/opcode/ChangeLog include/opcode/ChangeLog-9103 include/opcode/alpha.h include/opcode/arc.h include/opcode/arm.h include/opcode/avr.h include/opcode/bfin.h include/opcode/cgen.h include/opcode/convex.h include/opcode/cr16.h include/opcode/cris.h include/opcode/crx.h include/opcode/d10v.h include/opcode/d30v.h include/opcode/dlx.h include/opcode/h8300.h include/opcode/hppa.h include/opcode/i370.h include/opcode/i386.h include/opcode/i860.h include/opcode/i960.h include/opcode/ia64.h include/opcode/m68hc11.h include/opcode/m68k.h include/opcode/m88k.h include/opcode/mips.h include/opcode/mmix.h include/opcode/mn10200.h include/opcode/mn10300.h include/opcode/moxie.h include/opcode/msp430.h include/opcode/np1.h include/opcode/ns32k.h include/opcode/or32.h include/opcode/pdp11.h include/opcode/pj.h include/opcode/pn.h include/opcode/ppc.h include/opcode/pyr.h include/opcode/rx.h include/opcode/s390.h include/opcode/score-datadep.h include/opcode/score-inst.h include/opcode/sparc.h include/opcode/spu-insns.h include/opcode/spu.h include/opcode/tahoe.h include/opcode/tic30.h include/opcode/tic4x.h include/opcode/tic54x.h include/opcode/tic6x-control-registers.h include/opcode/tic6x-insn-formats.h include/opcode/tic6x-opcode-table.h include/opcode/tic6x.h include/opcode/tic80.h include/opcode/v850.h include/opcode/vax.h include/os9k.h include/partition.h include/plugin-api.h include/progress.h include/safe-ctype.h include/sha1.h include/simple-object.h include/som/ChangeLog include/som/aout.h include/som/clock.h include/som/internal.h include/som/lst.h include/som/reloc.h include/sort.h include/splay-tree.h include/symcat.h include/vms/ChangeLog include/vms/dcx.h include/vms/dmt.h include/vms/dsc.h include/vms/dst.h include/vms/eeom.h include/vms/egps.h include/vms/egsd.h include/vms/egst.h include/vms/egsy.h include/vms/eiaf.h include/vms/eicp.h include/vms/eidc.h include/vms/eiha.h include/vms/eihd.h include/vms/eihi.h include/vms/eihs.h include/vms/eihvn.h include/vms/eisd.h include/vms/emh.h include/vms/eobjrec.h include/vms/esdf.h include/vms/esdfm.h include/vms/esdfv.h include/vms/esgps.h include/vms/esrf.h include/vms/etir.h include/vms/internal.h include/vms/lbr.h include/vms/prt.h include/vms/shl.h include/xregex.h include/xregex2.h include/xtensa-config.h include/xtensa-isa-internal.h include/xtensa-isa.h texinfo/texinfo.tex
2011-03-232010-03-23 Rafael Ávila de Espíndola <respindola@mozilla.com>Rafael Ávila de Espíndola
* plugin-api.h (ld_plugin_get_view): New. (ld_plugin_tag): Add LDPT_GET_VIEW. (ld_plugin_tv): Add tv_get_view.
2011-01-04merge from gccDJ Delorie
2010-10-14Applied patch series for LD plugin interface (six parts).Dave Korn
[PATCH] Add infrastructure for plugin API; functionality to follow. include/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 1/6). * plugin-api.h (LDPT_GNU_LD_VERSION): New ld_plugin_tag enum member. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 1/6). * configure.in: Add AC_CHECKs for file io and dlfcn headers and functions and AC_SEARCH for -ldl. (enable_plugins): New shell variable set if above tests find dlopen functionality. (ENABLE_PLUGINS): Add related automake conditional. * configure: Regenerate. * config.in: Likewise. * Makefile.am (PLUGIN_C): Declare plugin C source file, conditional on ENABLE_PLUGINS being defined. (PLUGIN_H): Likewise for header file. (PLUGIN_OBJECT): Likewise for object file. (PLUGIN_CFLAGS): Likewise -D flag required to compile plugin support. (AM_CPPFLAGS): Use PLUGIN_CFLAGS. (CFILES): Use PLUGIN_C. (HFILES): Use PLUGIN_H. (OFILES): Use PLUGIN_OBJECT. (ld_new_SOURCES): Use PLUGIN_C. (noinst_LTLIBRARIES)[ENABLE_PLUGINS]: Declare test plugin. (libldtestplug_la_SOURCES)[ENABLE_PLUGINS]: Add automake definition for test plugin. (libldtestplug_la_CFLAGS)[ENABLE_PLUGINS]: Likewise. (libldtestplug_la_LDFLAGS)[ENABLE_PLUGINS]: Likewise. * Makefile.in: Regenerate. * sysdep.h: Include stdarg.h, unistd.h and one of fcntl.h or sys/file.h where available. Include dlfcn.h when ENABLE_PLUGINS. (O_RDONLY): Supply default definition likewise to bfd's sysdep.h (O_WRONLY): Likewise. (O_RDWR): Likewise. (O_ACCMODE): Likewise. (O_BINARY): Likewise. (SEEK_SET): Likewise. (SEEK_CUR): Likewise. (SEEK_END): Likewise. * ldmisc.c (vfinfo): Make non-static. Add %p format char. * ldmisc.h (vfinfo): Declare extern prototype. * lexsup.c (enum option_values)[ENABLE_PLUGINS]: Add new entries for OPTION_PLUGIN and OPTION_PLUGIN_OPT. (ld_options[])[ENABLE_PLUGINS]: Add option data for the above two. (parse_args)[ENABLE_PLUGINS]: Handle them, and load all plugins once option parsing is complete. * ldmain.c (main)[ENABLE_PLUGINS]: Call plugin cleanup hooks just after lang_finish. * plugin.c: New source file. * plugin.h: Likewise new header. * testplug.c: New source file. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 1/6). * ld-bootstrap/bootstrap.exp: Skip static tests also if LD plugins are enabled. * lib/ld-lib.exp (proc regexp_diff): Extend verbose debug output. (proc set_file_contents): Write a file with the supplied content. (run_ld_link_tests): Add new 'ld' action to test linker output. (proc check_plugin_api_available): Return true if linker under test supports the plugin API. * ld-plugin/func.c: New test source file. * ld-plugin/main.c: Likewise. * ld-plugin/text.c: Likewise. * ld-plugin/plugin-1.d: New dump test output pattern script. * ld-plugin/plugin-2.d: Likewise. * ld-plugin/plugin-3.d: Likewise. * ld-plugin/plugin-4.d: Likewise. * ld-plugin/plugin-5.d: Likewise. * ld-plugin/plugin.exp: New test control script. --- [PATCH] Implement claim file and all symbols read hooks and add symbols callback. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 2/6). * ldfile.c (ldfile_try_open_bfd)[ENABLE_PLUGINS]: Don't return early during compat checks if they pass, instead offer any successfully opened and accepted file to the plugin claim file hooks chain. Create a dummy bfd to accept symbols added by the plugin, if the plugin claims the file. * ldlang.c (lang_process)[ENABLE_PLUGINS]: Call plugin all symbols read hook chain before ldemul_after_open. * ldlang.h (struct lang_input_statement_struct): Add new single-bit 'claimed' flag. * plugin.c (IRONLY_SUFFIX): New macro for dummy bfd file suffix. (IRONLY_SUFFIX_LEN): Length of the above string. (plugin_get_ir_dummy_bfd): New function to create the dummy bfd used to store symbols for ir-only files. (is_ir_dummy_bfd): New function to check if a bfd is ir-only. (asymbol_from_plugin_symbol): New function converts symbol formats. (add_symbols): Call it to convert plugin syms to bfd syms and add them to the dummy bfd. * plugin.h: Add missing include guards. (plugin_get_ir_dummy_bfd): Add prototype. (is_ir_dummy_bfd): Likewise. * testplug.c (TV_MESSAGE): New helper macro. (struct claim_file): New struct. (claim_file_t): New typedef. (tag_names[]): Make static and const. (claimfiles_list): New variable. (claimfiles_tail_chain_ptr): Likewise. (last_claimfile): Likewise. (record_claim_file): Record a file to claim on a singly-linked list. (parse_symdefstr): Parse an ASCII representation of a symbol from a plugin option into the fields of a struct ld_plugin_symbol. (record_claimed_file_symbol): Use it to parse plugin option for adding a symbol. (parse_option): Parse claim file and add symbol options. (dump_tv_tag): Use TV_MESSAGE. (onload): Likewise. (onclaim_file): Make static. Use TV_MESSAGE. Scan list of files to claim and claim this file if required, adding any symbols specified. (onall_symbols_read): Make static and use TV_MESSAGE. (oncleanup): Likewise. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 2/6). * ld-plugin/plugin-3.d: Enable regexes for new functionality. * ld-plugin/plugin-5.d: Likewise. * ld-plugin/plugin-6.d: New testcase. * ld-plugin/plugin-7.d: Likewise. * ld-plugin/plugin.exp: Use 'nm' on compiled test objects to determine whether symbols in plugin arguments need an underscore prefix. Add new plugin-6.d and plugin-7.d testcases. --- [PATCH] Implement get symbols callback. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 3/6). * ldmain.c (notice)[ENABLE_PLUGINS]: Call plugin_notice. * plugin.c (non_ironly_hash): Add new bfd hash table. (plugin_load_plugins): Exit early if no plugins to load. If plugins do load successfully, set notice_all flag in link info. (get_symbols): Implement. (plugin_load_plugins): Exit early if no plugins to load, else after loading plugins successfully enable notice_all mode. (init_non_ironly_hash): Lazily init non_ironly_hash table. (plugin_notice): Record symbols referenced from non-IR files in the non_ironly_hash. Suppress tracing, cref generation and nocrossrefs tracking for symbols from dummy IR bfds. * plugin.h: Fix formatting. (plugin_notice): Add prototype. * testplug.c (dumpresolutions): New global var. (parse_options): Accept "dumpresolutions". (onall_symbols_read): Get syms and dump resolutions if it was given. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 3/6). * ld-plugin/plugin-8.d: New testcase. * ld-plugin/plugin.exp: Invoke it. --- [PATCH] Implement add input file, add input lib and set extra lib path callbacks. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 4/6). * ldlang.c (lang_process)[ENABLE_PLUGINS]: Move invocation of plugin_call_all_symbols_read to before setting of gc_sym_list, and open any new input files that may have been added during it. * ldmain.c (multiple_definition)[ENABLE_PLUGINS]: Call out to plugin_multiple_definition and let it have first say over what to do with the clashing definitions. * plugin.c (no_more_claiming): New boolean variable. (plugin_cached_allow_multiple_defs): Likewise. (add_input_file): Implement. (add_input_library): Likewise. (set_extra_library_path): Likewise. (plugin_call_claim_file): Don't do anything when no_more_claiming set. (plugin_call_all_symbols_read): Set it. Disable link info "allow_multiple_definition" flag, but cache its value. (plugin_multiple_definition): New function. * plugin.h (plugin_multiple_definition): Add prototype. * testplug.c (addfile_enum_t): New enumerated typedef. (add_file_t): New struct typedef. (addfiles_list): New variable. (addfiles_tail_chain_ptr): Likewise. (record_add_file): New function. (parse_option): Parse "add:", "lib:" and "dir:" options and call it. (onall_symbols_read): Iterate the list of new files, libs and dirs, adding them. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 4/6). * ld-plugin/plugin-9.d: New testcase. * ld-plugin/plugin.exp: Invoke it. --- [PATCH] Add ELF symbol visibility support to plugin interface. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 5/6). * plugin.c (asymbol_from_plugin_symbol): If the bfd is an ELF bfd, find the elf symbol data and set the visibility in the st_other field. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 5/6). * ld-plugin/plugin-ignore.d: New dump test control script. * ld-plugin/plugin-vis-1.d: Likewise. * ld-plugin/plugin.exp: Add list of ELF-only tests and run them if testing on an ELF target. --- [PATCH] Add archive support to plugin interface. bfd/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 6/6). * aoutx.h (aout_link_check_ar_symbols): Take new "subsbfd" reference parameter and pass it when invoking add_archive_element callback. (aout_link_check_archive_element): Handle substitute bfd if it was set during add_archive_element callback in the above. * cofflink.c (coff_link_check_ar_symbols): Take new "subsbfd" reference parameter and pass it when invoking add_archive_element callback. (coff_link_check_archive_element): Handle substitute bfd if it was set during add_archive_element callback in the above. * ecoff.c (read_ext_syms_and_strs): New function holds symbol-reading code factored-out from ecoff_link_check_archive_element. (reread_ext_syms_and_strs): Clear old symbols and call it. (ecoff_link_check_archive_element): Use the above. Handle substitute BFD if one is set by add_archive_element callback. (ecoff_link_add_archive_symbols): Likewise allow bfd substitution. * elflink.c (elf_link_add_archive_symbols): Likewise. * linker.c (generic_link_check_archive_element): Likewise. * pdp11.c (aout_link_check_ar_symbols): Take new "subsbfd" reference parameter and pass it when invoking add_archive_element callback. (aout_link_check_archive_element): Handle substitute bfd if it was set during add_archive_element callback in the above. * vms-alpha.c (alpha_vms_link_add_archive_symbols): Handle substitute BFD if one is set by add_archive_element callback. * xcofflink.c (xcoff_link_check_dynamic_ar_symbols): Take new "subsbfd" reference parameter and pass it when invoking add_archive_element callback. (xcoff_link_check_ar_symbols): Likewise. (xcoff_link_check_archive_element): Handle bfd substitution if it was set by callback in the above. include/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 6/6). * bfdlink.h (struct_bfd_link_callbacks): Document new argument to add_archive_element callback used to return a replacement bfd which is to be added to the hash table in place of the original element. ld/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 6/6). * ldlang.c (load_symbols): Handle bfd subsitution when calling the add_archive_element callback. * ldmain.c (add_archive_element)[ENABLE_PLUGINS]: Offer the archive member to the plugins and if claimed set "subsbfd" output parameter to point to the dummy IR-only BFD. ld/testsuite/ChangeLog: 2010-10-14 Dave Korn <dave.korn.cygwin@gmail.com> Apply LD plugin patch series (part 6/6). * ld-plugin/plugin-10.d: New dump test control script. * ld-plugin/plugin-11.d: Likewise. * ld-plugin/plugin.exp: Run them. ---
2010-06-222010-06-21 Rafael Espindola <espindola@google.com>Rafael Ávila de Espíndola
* fileread.cc (Input_file::find_fie): New (Input_file::open): Use Input_file::find_fie. * fileread.h (Input_file::find_fie): New * plugin.cc (set_extra_library_path): New. (Plugin::load): Add set_extra_library_path to the transfer vector. (Plugin_manager::set_extra_library_path): New. (Plugin_manager::add_input_file): Use the extra search path if set. (set_extra_library_path(): New. * plugin.h (Plugin_manager): Add set_extra_library_path and extra_search_path_. 2010-06-21 Rafael Espindola <espindola@google.com> * plugin-api.h (ld_plugin_set_extra_library_path): New. (ld_plugin_tag): Add LDPT_SET_EXTRA_LIBRARY_PATH. (ld_plugin_tv): Add tv_set_extra_library_path.
2010-06-182010-06-18 Rafael Espindola <espindola@google.com>Rafael Ávila de Espíndola
* plugin.h (ld_plugin_add_input_file, ld_plugin_add_input_library): Make argument const. 2010-06-18 Rafael Espindola <espindola@google.com> * plugin.cc (add_input_file,add_input_library) (Plugin_manager::add_input_file): Make filename arguments const. * plugin.h (Plugin_manager::add_input_file): Make filename arguments const.
2010-06-012010-06-01 Rafael Espindola <espindola@google.com>Rafael Ávila de Espíndola
* plugin-api.h (ld_plugin_tag): Add LDPT_OUTPUT_NAME. 2010-06-01 Rafael Espindola <espindola@google.com> * plugin.cc (Plugin::load): Pass the output name to the plugin.
2009-10-19merge from gccDJ Delorie
2009-10-09merge from gccDJ Delorie
2009-10-07Merge from gcc repository.Ian Lance Taylor
2009-01-15 * plugin-api.h (LDPS_BAD_HANDLE): New constant.Cary Coutant
(ld_plugin_get_input_file): New typedef. (ld_plugin_release_input_file): New typedef. (LDPT_GET_INPUT_FILE, LDPT_RELEASE_INPUT_FILE): New constants. (struct ld_plugin_tv): Add two new fields.
2008-12-01gold/ChangeLog:Cary Coutant
* plugin.cc (ld_plugin_message): Change format parameter to const. Fix mismatch between new[] and delete. include/ChangeLog: * plugin-api.h (ld_plugin_message): Change format parameter to const.
2008-12-01 * plugin-api.h: Fix syntax error when compiling with C++.Cary Coutant
2008-09-22 * plugin-api.h (ld_plugin_status): Remove comma from the last item.Ian Lance Taylor
Use C style comment. (ld_plugin_api_version, ld_plugin_output_file_type, ld_plugin_symbol_kind, ld_plugin_symbol_visibility, ld_plugin_symbol_resolution, ld_plugin_level, ld_plugin_tag): Remove comma from the last item.
2008-09-20Add plugin functionality for link-time optimization (LTO).Cary Coutant
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.