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b21318bd2c
This is one part of the fix for GCC PR109128, along with a corresponding GCC change. Without this patch, what happens in the linker, when an unused object in a .a file has offload data, is that elf_link_is_defined_archive_symbol calls bfd_link_plugin_object_p, which ends up calling the plugin's claim_file_handler, which then records the object as one with offload data. That is, the linker never decides to use the object in the first place, but use of this _p interface (called as part of trying to decide whether to use the object) results in the plugin deciding to use its offload data (and a consequent mismatch in the offload data present at runtime). The new hook allows the linker plugin to distinguish calls to claim_file_handler that know the object is being used by the linker (from ldmain.c:add_archive_element), from calls that don't know it's being used by the linker (from elf_link_is_defined_archive_symbol); in the latter case, the plugin should avoid recording the object as one with offload data. bfd/ * plugin.c (struct plugin_list_entry): Add claim_file_v2. (register_claim_file_v2): New. (try_load_plugin): Use LDPT_REGISTER_CLAIM_FILE_HOOK_V2. (ld_plugin_object_p): Take second argument. (bfd_link_plugin_object_p): Update call to ld_plugin_object_p. (register_ld_plugin_object_p): Update argument prototype. (bfd_plugin_object_p): Update call to ld_plugin_object_p. * plugin.h (register_ld_plugin_object_p): Update argument prototype. include/ * plugin.api.h (ld_plugin_claim_file_handler_v2) (ld_plugin_register_claim_file_v2) (LDPT_REGISTER_CLAIM_FILE_HOOK_V2): New. (struct ld_plugin_tv): Add tv_register_claim_file_v2. ld/ * plugin.c (struct plugin): Add claim_file_handler_v2. (LDPT_REGISTER_CLAIM_FILE_HOOK_V2): New. (plugin_object_p): Add second argument. Update call to plugin_call_claim_file. (register_claim_file_v2): New. (set_tv_header): Handle LDPT_REGISTER_CLAIM_FILE_HOOK_V2. (plugin_call_claim_file): Add argument known_used. (plugin_maybe_claim): Update call to plugin_object_p. * testplug.c, testplug2.c, testplug3.c, testplug4.c: Handle LDPT_REGISTER_CLAIM_FILE_HOOK_V2. * testsuite/ld-plugin/plugin-1.d, testsuite/ld-plugin/plugin-10.d, testsuite/ld-plugin/plugin-11.d, testsuite/ld-plugin/plugin-13.d, testsuite/ld-plugin/plugin-14.d, testsuite/ld-plugin/plugin-15.d, testsuite/ld-plugin/plugin-16.d, testsuite/ld-plugin/plugin-17.d, testsuite/ld-plugin/plugin-18.d, testsuite/ld-plugin/plugin-19.d, testsuite/ld-plugin/plugin-2.d, testsuite/ld-plugin/plugin-26.d, testsuite/ld-plugin/plugin-3.d, testsuite/ld-plugin/plugin-30.d, testsuite/ld-plugin/plugin-4.d, testsuite/ld-plugin/plugin-5.d, testsuite/ld-plugin/plugin-6.d, testsuite/ld-plugin/plugin-7.d, testsuite/ld-plugin/plugin-8.d, testsuite/ld-plugin/plugin-9.d: Update test expectations.
28 lines
1.0 KiB
Makefile
28 lines
1.0 KiB
Makefile
Hello from testplugin.
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.*: LDPT_MESSAGE func@0x.*
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.*: LDPT_API_VERSION value 0x1 \(1\)
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.*: LDPT_GNU_LD_VERSION value 0x.*
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.*: LDPT_LINKER_OUTPUT value 0x1 \(1\)
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.*: LDPT_OUTPUT_NAME 'tmpdir/main.x'
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.*: LDPT_REGISTER_CLAIM_FILE_HOOK func@0x.*
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.*: LDPT_REGISTER_CLAIM_FILE_HOOK_V2 func@0x.*
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.*: LDPT_REGISTER_ALL_SYMBOLS_READ_HOOK func@0x.*
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.*: LDPT_REGISTER_CLEANUP_HOOK func@0x.*
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.*: LDPT_ADD_SYMBOLS func@0x.*
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.*: LDPT_GET_INPUT_FILE func@0x.*
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.*: LDPT_GET_VIEW func@0x.*
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.*: LDPT_RELEASE_INPUT_FILE func@0x.*
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.*: LDPT_GET_SYMBOLS func@0x.*
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.*: LDPT_GET_SYMBOLS_V2 func@0x.*
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.*: LDPT_ADD_INPUT_FILE func@0x.*
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.*: LDPT_ADD_INPUT_LIBRARY func@0x.*
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.*: LDPT_SET_EXTRA_LIBRARY_PATH func@0x.*
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.*: LDPT_OPTION 'registerclaimfile'
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.*: LDPT_OPTION 'read:8'
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.*: LDPT_NULL value 0x0 \(0\)
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#...
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hook called: claim_file tmpdir/main.o \[@0/.* not claimed
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hook called: claim_file tmpdir/func.o \[@0/.* not claimed
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hook called: claim_file tmpdir/text.o \[@0/.* not claimed
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hook called: claim_file tmpdir/libempty.a \[@.* not claimed
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