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5d3236eea0
[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. ---
618 lines
18 KiB
C
618 lines
18 KiB
C
/* Test plugin for the GNU linker.
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Copyright 2010 Free Software Foundation, Inc.
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "plugin-api.h"
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/* For ARRAY_SIZE macro only - we don't link the library itself. */
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#include "libiberty.h"
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extern enum ld_plugin_status onload (struct ld_plugin_tv *tv);
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static enum ld_plugin_status onclaim_file (const struct ld_plugin_input_file *file,
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int *claimed);
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static enum ld_plugin_status onall_symbols_read (void);
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static enum ld_plugin_status oncleanup (void);
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/* Helper for calling plugin api message function. */
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#define TV_MESSAGE if (tv_message) (*tv_message)
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/* Struct for recording files to claim / files claimed. */
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typedef struct claim_file
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{
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struct claim_file *next;
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struct ld_plugin_input_file file;
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bfd_boolean claimed;
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struct ld_plugin_symbol *symbols;
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int n_syms_allocated;
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int n_syms_used;
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} claim_file_t;
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/* Types of things that can be added at all symbols read time. */
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typedef enum addfile_enum
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{
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ADD_FILE,
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ADD_LIB,
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ADD_DIR
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} addfile_enum_t;
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/* Struct for recording files to add to final link. */
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typedef struct add_file
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{
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struct add_file *next;
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const char *name;
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addfile_enum_t type;
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} add_file_t;
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/* Helper macro for defining array of transfer vector tags and names. */
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#define ADDENTRY(tag) { tag, #tag }
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/* Struct for looking up human-readable versions of tag names. */
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typedef struct tag_name
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{
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enum ld_plugin_tag tag;
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const char *name;
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} tag_name_t;
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/* Array of all known tags and their names. */
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static const tag_name_t tag_names[] =
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{
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ADDENTRY(LDPT_NULL),
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ADDENTRY(LDPT_API_VERSION),
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ADDENTRY(LDPT_GOLD_VERSION),
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ADDENTRY(LDPT_LINKER_OUTPUT),
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ADDENTRY(LDPT_OPTION),
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ADDENTRY(LDPT_REGISTER_CLAIM_FILE_HOOK),
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ADDENTRY(LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK),
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ADDENTRY(LDPT_REGISTER_CLEANUP_HOOK),
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ADDENTRY(LDPT_ADD_SYMBOLS),
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ADDENTRY(LDPT_GET_SYMBOLS),
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ADDENTRY(LDPT_ADD_INPUT_FILE),
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ADDENTRY(LDPT_MESSAGE),
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ADDENTRY(LDPT_GET_INPUT_FILE),
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ADDENTRY(LDPT_RELEASE_INPUT_FILE),
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ADDENTRY(LDPT_ADD_INPUT_LIBRARY),
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ADDENTRY(LDPT_OUTPUT_NAME),
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ADDENTRY(LDPT_SET_EXTRA_LIBRARY_PATH),
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ADDENTRY(LDPT_GNU_LD_VERSION)
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};
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/* Function pointers to cache hooks passed at onload time. */
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static ld_plugin_register_claim_file tv_register_claim_file = 0;
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static ld_plugin_register_all_symbols_read tv_register_all_symbols_read = 0;
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static ld_plugin_register_cleanup tv_register_cleanup = 0;
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static ld_plugin_add_symbols tv_add_symbols = 0;
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static ld_plugin_get_symbols tv_get_symbols = 0;
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static ld_plugin_add_input_file tv_add_input_file = 0;
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static ld_plugin_message tv_message = 0;
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static ld_plugin_get_input_file tv_get_input_file = 0;
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static ld_plugin_release_input_file tv_release_input_file = 0;
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static ld_plugin_add_input_library tv_add_input_library = 0;
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static ld_plugin_set_extra_library_path tv_set_extra_library_path = 0;
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/* Other cached info from the transfer vector. */
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static enum ld_plugin_output_file_type linker_output;
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static const char *output_name;
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/* Behaviour control flags set by plugin options. */
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static enum ld_plugin_status onload_ret = LDPS_OK;
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static enum ld_plugin_status claim_file_ret = LDPS_OK;
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static enum ld_plugin_status all_symbols_read_ret = LDPS_OK;
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static enum ld_plugin_status cleanup_ret = LDPS_OK;
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static bfd_boolean register_claimfile_hook = FALSE;
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static bfd_boolean register_allsymbolsread_hook = FALSE;
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static bfd_boolean register_cleanup_hook = FALSE;
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static bfd_boolean dumpresolutions = FALSE;
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/* The master list of all claimable/claimed files. */
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static claim_file_t *claimfiles_list = NULL;
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/* We keep a tail pointer for easy linking on the end. */
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static claim_file_t **claimfiles_tail_chain_ptr = &claimfiles_list;
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/* The last claimed file added to the list, for receiving syms. */
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static claim_file_t *last_claimfile = NULL;
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/* The master list of all files to add to the final link. */
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static add_file_t *addfiles_list = NULL;
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/* We keep a tail pointer for easy linking on the end. */
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static add_file_t **addfiles_tail_chain_ptr = &addfiles_list;
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/* Add a new claimfile on the end of the chain. */
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static enum ld_plugin_status
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record_claim_file (const char *file)
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{
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claim_file_t *newfile;
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newfile = malloc (sizeof *newfile);
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if (!newfile)
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return LDPS_ERR;
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memset (newfile, 0, sizeof *newfile);
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/* Only setup for now is remembering the name to look for. */
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newfile->file.name = file;
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/* Chain it on the end of the list. */
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*claimfiles_tail_chain_ptr = newfile;
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claimfiles_tail_chain_ptr = &newfile->next;
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/* Record it as active for receiving symbols to register. */
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last_claimfile = newfile;
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return LDPS_OK;
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}
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/* Add a new addfile on the end of the chain. */
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static enum ld_plugin_status
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record_add_file (const char *file, addfile_enum_t type)
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{
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add_file_t *newfile;
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newfile = malloc (sizeof *newfile);
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if (!newfile)
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return LDPS_ERR;
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newfile->next = NULL;
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newfile->name = file;
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newfile->type = type;;
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/* Chain it on the end of the list. */
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*addfiles_tail_chain_ptr = newfile;
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addfiles_tail_chain_ptr = &newfile->next;
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return LDPS_OK;
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}
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/* Parse a command-line argument string into a symbol definition.
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Symbol-strings follow the colon-separated format:
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NAME:VERSION:def:vis:size:COMDATKEY
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where the fields in capitals are strings and those in lower
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case are integers. We don't allow to specify a resolution as
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doing so is not meaningful when calling the add symbols hook. */
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static enum ld_plugin_status
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parse_symdefstr (const char *str, struct ld_plugin_symbol *sym)
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{
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int n;
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long long size;
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const char *colon1, *colon2, *colon5;
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/* Locate the colons separating the first two strings. */
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colon1 = strchr (str, ':');
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if (!colon1)
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return LDPS_ERR;
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colon2 = strchr (colon1+1, ':');
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if (!colon2)
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return LDPS_ERR;
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/* Name must not be empty (version may be). */
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if (colon1 == str)
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return LDPS_ERR;
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/* The fifth colon and trailing comdat key string are optional,
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but the intermediate ones must all be present. */
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colon5 = strchr (colon2+1, ':'); /* Actually only third so far. */
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if (!colon5)
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return LDPS_ERR;
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colon5 = strchr (colon5+1, ':'); /* Hopefully fourth now. */
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if (!colon5)
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return LDPS_ERR;
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colon5 = strchr (colon5+1, ':'); /* Optional fifth now. */
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/* Finally we'll use sscanf to parse the numeric fields, then
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we'll split out the strings which we need to allocate separate
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storage for anyway so that we can add nul termination. */
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n = sscanf (colon2 + 1, "%i:%i:%lli", &sym->def, &sym->visibility, &size);
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if (n != 3)
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return LDPS_ERR;
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/* Parsed successfully, so allocate strings and fill out fields. */
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sym->size = size;
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sym->resolution = LDPR_UNKNOWN;
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sym->name = malloc (colon1 - str + 1);
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if (!sym->name)
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return LDPS_ERR;
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memcpy (sym->name, str, colon1 - str);
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sym->name[colon1 - str] = '\0';
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if (colon2 > (colon1 + 1))
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{
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sym->version = malloc (colon2 - colon1);
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if (!sym->version)
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return LDPS_ERR;
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memcpy (sym->version, colon1 + 1, colon2 - (colon1 + 1));
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sym->version[colon2 - (colon1 + 1)] = '\0';
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}
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else
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sym->version = NULL;
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if (colon5 && colon5[1])
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{
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sym->comdat_key = malloc (strlen (colon5 + 1) + 1);
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if (!sym->comdat_key)
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return LDPS_ERR;
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strcpy (sym->comdat_key, colon5 + 1);
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}
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else
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sym->comdat_key = 0;
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return LDPS_OK;
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}
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/* Record a symbol to be added for the last-added claimfile. */
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static enum ld_plugin_status
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record_claimed_file_symbol (const char *symdefstr)
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{
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struct ld_plugin_symbol sym;
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/* Can't add symbols except as belonging to claimed files. */
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if (!last_claimfile)
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return LDPS_ERR;
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/* If string doesn't parse correctly, give an error. */
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if (parse_symdefstr (symdefstr, &sym) != LDPS_OK)
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return LDPS_ERR;
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/* Check for enough space, resize array if needed, and add it. */
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if (last_claimfile->n_syms_allocated == last_claimfile->n_syms_used)
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{
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int new_n_syms = last_claimfile->n_syms_allocated
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? 2 * last_claimfile->n_syms_allocated
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: 10;
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last_claimfile->symbols = realloc (last_claimfile->symbols,
|
|
new_n_syms * sizeof *last_claimfile->symbols);
|
|
if (!last_claimfile->symbols)
|
|
return LDPS_ERR;
|
|
last_claimfile->n_syms_allocated = new_n_syms;
|
|
}
|
|
last_claimfile->symbols[last_claimfile->n_syms_used++] = sym;
|
|
|
|
return LDPS_OK;
|
|
}
|
|
|
|
/* Records the status to return from one of the registered hooks. */
|
|
static enum ld_plugin_status
|
|
set_ret_val (const char *whichval, enum ld_plugin_status retval)
|
|
{
|
|
if (!strcmp ("onload", whichval))
|
|
onload_ret = retval;
|
|
else if (!strcmp ("claimfile", whichval))
|
|
claim_file_ret = retval;
|
|
else if (!strcmp ("allsymbolsread", whichval))
|
|
all_symbols_read_ret = retval;
|
|
else if (!strcmp ("cleanup", whichval))
|
|
cleanup_ret = retval;
|
|
else
|
|
return LDPS_ERR;
|
|
return LDPS_OK;
|
|
}
|
|
|
|
/* Records hooks which should be registered. */
|
|
static enum ld_plugin_status
|
|
set_register_hook (const char *whichhook, bfd_boolean yesno)
|
|
{
|
|
if (!strcmp ("claimfile", whichhook))
|
|
register_claimfile_hook = yesno;
|
|
else if (!strcmp ("allsymbolsread", whichhook))
|
|
register_allsymbolsread_hook = yesno;
|
|
else if (!strcmp ("cleanup", whichhook))
|
|
register_cleanup_hook = yesno;
|
|
else
|
|
return LDPS_ERR;
|
|
return LDPS_OK;
|
|
}
|
|
|
|
/* Determine type of plugin option and pass to individual parsers. */
|
|
static enum ld_plugin_status
|
|
parse_option (const char *opt)
|
|
{
|
|
if (!strncmp ("fail", opt, 4))
|
|
return set_ret_val (opt + 4, LDPS_ERR);
|
|
else if (!strncmp ("pass", opt, 4))
|
|
return set_ret_val (opt + 4, LDPS_OK);
|
|
else if (!strncmp ("register", opt, 8))
|
|
return set_register_hook (opt + 8, TRUE);
|
|
else if (!strncmp ("noregister", opt, 10))
|
|
return set_register_hook (opt + 10, FALSE);
|
|
else if (!strncmp ("claim:", opt, 6))
|
|
return record_claim_file (opt + 6);
|
|
else if (!strncmp ("sym:", opt, 4))
|
|
return record_claimed_file_symbol (opt + 4);
|
|
else if (!strncmp ("add:", opt, 4))
|
|
return record_add_file (opt + 4, ADD_FILE);
|
|
else if (!strncmp ("lib:", opt, 4))
|
|
return record_add_file (opt + 4, ADD_LIB);
|
|
else if (!strncmp ("dir:", opt, 4))
|
|
return record_add_file (opt + 4, ADD_DIR);
|
|
else if (!strcmp ("dumpresolutions", opt))
|
|
dumpresolutions = TRUE;
|
|
else
|
|
return LDPS_ERR;
|
|
return LDPS_OK;
|
|
}
|
|
|
|
/* Output contents of transfer vector array entry in human-readable form. */
|
|
static void
|
|
dump_tv_tag (size_t n, struct ld_plugin_tv *tv)
|
|
{
|
|
size_t tag;
|
|
char unknownbuf[40];
|
|
const char *name;
|
|
|
|
for (tag = 0; tag < ARRAY_SIZE (tag_names); tag++)
|
|
if (tag_names[tag].tag == tv->tv_tag)
|
|
break;
|
|
sprintf (unknownbuf, "unknown tag #%d", tv->tv_tag);
|
|
name = (tag < ARRAY_SIZE (tag_names)) ? tag_names[tag].name : unknownbuf;
|
|
TV_MESSAGE (LDPL_INFO, "tv[%d]: %s ", n, name);
|
|
switch (tv->tv_tag)
|
|
{
|
|
case LDPT_OPTION:
|
|
case LDPT_OUTPUT_NAME:
|
|
TV_MESSAGE (LDPL_INFO, "'%s'\n", tv->tv_u.tv_string);
|
|
break;
|
|
case LDPT_REGISTER_CLAIM_FILE_HOOK:
|
|
case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
|
|
case LDPT_REGISTER_CLEANUP_HOOK:
|
|
case LDPT_ADD_SYMBOLS:
|
|
case LDPT_GET_SYMBOLS:
|
|
case LDPT_ADD_INPUT_FILE:
|
|
case LDPT_MESSAGE:
|
|
case LDPT_GET_INPUT_FILE:
|
|
case LDPT_RELEASE_INPUT_FILE:
|
|
case LDPT_ADD_INPUT_LIBRARY:
|
|
case LDPT_SET_EXTRA_LIBRARY_PATH:
|
|
TV_MESSAGE (LDPL_INFO, "func@0x%p\n",
|
|
(void *)(tv->tv_u.tv_message));
|
|
break;
|
|
case LDPT_NULL:
|
|
case LDPT_API_VERSION:
|
|
case LDPT_GOLD_VERSION:
|
|
case LDPT_LINKER_OUTPUT:
|
|
case LDPT_GNU_LD_VERSION:
|
|
default:
|
|
TV_MESSAGE (LDPL_INFO, "value %W (%d)\n",
|
|
(bfd_vma)tv->tv_u.tv_val, tv->tv_u.tv_val);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Handle/record information received in a transfer vector entry. */
|
|
static enum ld_plugin_status
|
|
parse_tv_tag (struct ld_plugin_tv *tv)
|
|
{
|
|
#define SETVAR(x) x = tv->tv_u.x
|
|
switch (tv->tv_tag)
|
|
{
|
|
case LDPT_OPTION:
|
|
return parse_option (tv->tv_u.tv_string);
|
|
case LDPT_NULL:
|
|
case LDPT_GOLD_VERSION:
|
|
case LDPT_GNU_LD_VERSION:
|
|
case LDPT_API_VERSION:
|
|
default:
|
|
break;
|
|
case LDPT_OUTPUT_NAME:
|
|
output_name = tv->tv_u.tv_string;
|
|
break;
|
|
case LDPT_LINKER_OUTPUT:
|
|
linker_output = tv->tv_u.tv_val;
|
|
break;
|
|
case LDPT_REGISTER_CLAIM_FILE_HOOK:
|
|
SETVAR(tv_register_claim_file);
|
|
break;
|
|
case LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK:
|
|
SETVAR(tv_register_all_symbols_read);
|
|
break;
|
|
case LDPT_REGISTER_CLEANUP_HOOK:
|
|
SETVAR(tv_register_cleanup);
|
|
break;
|
|
case LDPT_ADD_SYMBOLS:
|
|
SETVAR(tv_add_symbols);
|
|
break;
|
|
case LDPT_GET_SYMBOLS:
|
|
SETVAR(tv_get_symbols);
|
|
break;
|
|
case LDPT_ADD_INPUT_FILE:
|
|
SETVAR(tv_add_input_file);
|
|
break;
|
|
case LDPT_MESSAGE:
|
|
SETVAR(tv_message);
|
|
break;
|
|
case LDPT_GET_INPUT_FILE:
|
|
SETVAR(tv_get_input_file);
|
|
break;
|
|
case LDPT_RELEASE_INPUT_FILE:
|
|
SETVAR(tv_release_input_file);
|
|
break;
|
|
case LDPT_ADD_INPUT_LIBRARY:
|
|
SETVAR(tv_add_input_library);
|
|
break;
|
|
case LDPT_SET_EXTRA_LIBRARY_PATH:
|
|
SETVAR(tv_set_extra_library_path);
|
|
break;
|
|
}
|
|
#undef SETVAR
|
|
return LDPS_OK;
|
|
}
|
|
|
|
/* Record any useful information in transfer vector entry and display
|
|
it in human-readable form using the plugin API message() callback. */
|
|
enum ld_plugin_status
|
|
parse_and_dump_tv_tag (size_t n, struct ld_plugin_tv *tv)
|
|
{
|
|
enum ld_plugin_status rv = parse_tv_tag (tv);
|
|
dump_tv_tag (n, tv);
|
|
return rv;
|
|
}
|
|
|
|
/* Standard plugin API entry point. */
|
|
enum ld_plugin_status
|
|
onload (struct ld_plugin_tv *tv)
|
|
{
|
|
size_t n = 0;
|
|
enum ld_plugin_status rv;
|
|
|
|
/* This plugin does nothing but dump the tv array. It would
|
|
be an error if this function was called without one. */
|
|
if (!tv)
|
|
return LDPS_ERR;
|
|
|
|
/* First entry should always be LDPT_MESSAGE, letting us get
|
|
hold of it easily so we can send output straight away. */
|
|
if (tv[0].tv_tag == LDPT_MESSAGE)
|
|
tv_message = tv[0].tv_u.tv_message;
|
|
|
|
fflush (NULL);
|
|
TV_MESSAGE (LDPL_INFO, "Hello from testplugin.\n");
|
|
|
|
do
|
|
if ((rv = parse_and_dump_tv_tag (n++, tv)) != LDPS_OK)
|
|
return rv;
|
|
while ((tv++)->tv_tag != LDPT_NULL);
|
|
|
|
TV_MESSAGE (LDPL_INFO, "\n");
|
|
|
|
/* Register hooks only if instructed by options. */
|
|
if (register_claimfile_hook)
|
|
{
|
|
if (!tv_register_claim_file)
|
|
{
|
|
TV_MESSAGE (LDPL_FATAL, "No register_claim_file hook\n");
|
|
fflush (NULL);
|
|
return LDPS_ERR;
|
|
}
|
|
(*tv_register_claim_file) (onclaim_file);
|
|
}
|
|
if (register_allsymbolsread_hook)
|
|
{
|
|
if (!tv_register_all_symbols_read)
|
|
{
|
|
TV_MESSAGE (LDPL_FATAL, "No register_all_symbols_read hook\n");
|
|
fflush (NULL);
|
|
return LDPS_ERR;
|
|
}
|
|
(*tv_register_all_symbols_read) (onall_symbols_read);
|
|
}
|
|
if (register_cleanup_hook)
|
|
{
|
|
if (!tv_register_cleanup)
|
|
{
|
|
TV_MESSAGE (LDPL_FATAL, "No register_cleanup hook\n");
|
|
fflush (NULL);
|
|
return LDPS_ERR;
|
|
}
|
|
(*tv_register_cleanup) (oncleanup);
|
|
}
|
|
fflush (NULL);
|
|
return onload_ret;
|
|
}
|
|
|
|
/* Standard plugin API registerable hook. */
|
|
static enum ld_plugin_status
|
|
onclaim_file (const struct ld_plugin_input_file *file, int *claimed)
|
|
{
|
|
/* Let's see if we want to claim this file. */
|
|
claim_file_t *claimfile = claimfiles_list;
|
|
while (claimfile)
|
|
{
|
|
if (!strcmp (file->name, claimfile->file.name))
|
|
break;
|
|
claimfile = claimfile->next;
|
|
}
|
|
|
|
/* Inform the user/testsuite. */
|
|
TV_MESSAGE (LDPL_INFO, "hook called: claim_file %s [@%ld/%ld] %s\n",
|
|
file->name, (long)file->offset, (long)file->filesize,
|
|
claimfile ? "CLAIMED" : "not claimed");
|
|
fflush (NULL);
|
|
|
|
/* If we decided to claim it, record that fact, and add any symbols
|
|
that were defined for it by plugin options. */
|
|
*claimed = (claimfile != 0);
|
|
if (claimfile)
|
|
{
|
|
claimfile->claimed = TRUE;
|
|
claimfile->file = *file;
|
|
if (claimfile->n_syms_used && !tv_add_symbols)
|
|
return LDPS_ERR;
|
|
else if (claimfile->n_syms_used)
|
|
return (*tv_add_symbols) (claimfile->file.handle,
|
|
claimfile->n_syms_used, claimfile->symbols);
|
|
}
|
|
|
|
return claim_file_ret;
|
|
}
|
|
|
|
/* Standard plugin API registerable hook. */
|
|
static enum ld_plugin_status
|
|
onall_symbols_read (void)
|
|
{
|
|
static const char *resolutions[] =
|
|
{
|
|
"LDPR_UNKNOWN",
|
|
"LDPR_UNDEF",
|
|
"LDPR_PREVAILING_DEF",
|
|
"LDPR_PREVAILING_DEF_IRONLY",
|
|
"LDPR_PREEMPTED_REG",
|
|
"LDPR_PREEMPTED_IR",
|
|
"LDPR_RESOLVED_IR",
|
|
"LDPR_RESOLVED_EXEC",
|
|
"LDPR_RESOLVED_DYN",
|
|
};
|
|
claim_file_t *claimfile = dumpresolutions ? claimfiles_list : NULL;
|
|
add_file_t *addfile = addfiles_list;
|
|
TV_MESSAGE (LDPL_INFO, "hook called: all symbols read.\n");
|
|
for ( ; claimfile; claimfile = claimfile->next)
|
|
{
|
|
enum ld_plugin_status rv;
|
|
int n;
|
|
if (claimfile->n_syms_used && !tv_get_symbols)
|
|
return LDPS_ERR;
|
|
else if (!claimfile->n_syms_used)
|
|
continue;
|
|
rv = tv_get_symbols (claimfile->file.handle, claimfile->n_syms_used,
|
|
claimfile->symbols);
|
|
if (rv != LDPS_OK)
|
|
return rv;
|
|
for (n = 0; n < claimfile->n_syms_used; n++)
|
|
TV_MESSAGE (LDPL_INFO, "Sym: '%s%s%s' Resolution: %s\n",
|
|
claimfile->symbols[n].name,
|
|
claimfile->symbols[n].version ? "@" : "",
|
|
claimfile->symbols[n].version ? claimfile->symbols[n].version
|
|
: "",
|
|
resolutions[claimfile->symbols[n].resolution]);
|
|
}
|
|
for ( ; addfile ; addfile = addfile->next)
|
|
{
|
|
enum ld_plugin_status rv;
|
|
if (addfile->type == ADD_LIB && tv_add_input_library)
|
|
rv = (*tv_add_input_library) (addfile->name);
|
|
else if (addfile->type == ADD_FILE && tv_add_input_file)
|
|
rv = (*tv_add_input_file) (addfile->name);
|
|
else if (addfile->type == ADD_DIR && tv_set_extra_library_path)
|
|
rv = (*tv_set_extra_library_path) (addfile->name);
|
|
else
|
|
rv = LDPS_ERR;
|
|
if (rv != LDPS_OK)
|
|
return rv;
|
|
}
|
|
fflush (NULL);
|
|
return all_symbols_read_ret;
|
|
}
|
|
|
|
/* Standard plugin API registerable hook. */
|
|
static enum ld_plugin_status
|
|
oncleanup (void)
|
|
{
|
|
TV_MESSAGE (LDPL_INFO, "hook called: cleanup.\n");
|
|
fflush (NULL);
|
|
return cleanup_ret;
|
|
}
|
|
|