Hey Benoit,
It looks like CFI is incorrectly being enabled for your build, although
this is not supported for this platform at the moment. Until we fix this in
the Chromium build system, can you try adding:
arm_control_flow_integrity = "none"
explicitly to your config for now?
On Wednesday, December 14, 2022 at 6:45:14 AM UTC jgr...@chromium.org wrote:
> Hey Benoit,
>
> the v8_Default_embedded_blob_code_ symbol is created by the embedded file
> writer
> <https://source.chromium.org/chromium/chromium/src/+/main:v8/src/snapshot/embedded/embedded-file-writer.cc;l=160;drc=697e7e0df4f2d9bc7189c1358100705662e4c4ef>
> and
> ends up in out/foo/gen/embedded.S in your build directory. I'd make sure
> that file exists (or the .cc equivalent), has expected contents, and is
> included in the build.
>
> On Wed, Dec 7, 2022 at 10:08 AM Benoit Blanchon <benoit....@gmail.com>
> wrote:
>
>> Hi,
>>
>> I successfully build PDFium with V8 on most platforms, but I'm having the
>> following linker errors when target_os=ios and target_cpu=arm64:
>>
>> ld64.lld: error: undefined symbol: v8_Default_embedded_blob_code_
>> >>> referenced by isolate.cc:0 (../v8/src/execution/isolate.cc:0)
>> >>> obj/v8/v8_base_without_compiler/isolate.o:(symbol
>> v8::internal::Isolate::InitializeDefaultEmbeddedBlob()+0x104)
>> >>> referenced by isolate.cc:0 (../v8/src/execution/isolate.cc:0)
>> >>> obj/v8/v8_base_without_compiler/isolate.o:(symbol
>> v8::internal::Isolate::InitializeDefaultEmbeddedBlob()+0x100)
>> >>> referenced by deoptimizer-cfi-builtins.cc:52
>> (../v8/src/deoptimizer/deoptimizer-cfi-builtins.cc:52)
>> >>> obj/v8/v8_snapshot/deoptimizer-cfi-builtins.o:(symbol
>> v8::internal::Deoptimizer::IsValidReturnAddress(unsigned long,
>> v8::internal::Isolate*)+0x44)
>> >>> referenced 1 more times
>>
>> ld64.lld: error: undefined symbol: v8_Default_embedded_blob_data_
>> ...
>> ld64.lld: error: undefined symbol: v8_Default_embedded_blob_data_size_
>> ...
>> ld64.lld: error: undefined symbol: v8_Default_embedded_blob_code_size_
>> ...
>> ld64.lld: error: undefined symbol: Builtins_RestartFrameTrampoline
>> ...
>> ld64.lld: error: undefined symbol:
>> Builtins_BaselineOrInterpreterEnterAtNextBytecode
>> ...
>> ld64.lld: error: undefined symbol:
>> Builtins_BaselineOrInterpreterEnterAtBytecode
>> ...
>> ld64.lld: error: undefined symbol: construct_stub_invoke_deopt_addr
>> ...
>> ld64.lld: error: undefined symbol: construct_stub_create_deopt_addr
>> ...
>> ld64.lld: error: undefined symbol: Builtins_ContinueToJavaScriptBuiltin
>> ...
>> ld64.lld: error: undefined symbol:
>> Builtins_ContinueToJavaScriptBuiltinWithResult
>> ...
>> ld64.lld: error: undefined symbol: Builtins_ContinueToCodeStubBuiltin
>> ...
>> ld64.lld: error: undefined symbol:
>> Builtins_ContinueToCodeStubBuiltinWithResult
>> ...
>> ld64.lld: error: undefined symbol: Builtins_InterpreterEnterAtNextBytecode
>> ...
>> ld64.lld: error: undefined symbol: Builtins_InterpreterEnterAtBytecode
>>
>> As far as I can tell, v8_Default_embedded_blob_data_ is defined
>> in v8/src/builtins/arm64/builtins-arm64.cc, which seems to build fine (see
>> log
>> <https://github.com/bblanchon/pdfium-binaries/actions/runs/3612296209/jobs/6087308873>
>> ).
>>
>> I originally asked this question on the PDFium
>> <https://groups.google.com/g/pdfium/c/8R56bd60PSI/m/KK34nTs5AwAJ> list
>> but was told to ask it here instead.
>>
>> Any idea how I could fix this?
>>
>> Best regards,
>> Benoit
>>
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>>
>
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