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Add support for ARM64 and musl and fix few mistakes #3

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Add support for ARM64 and musl and fix few mistakes #3

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Commits on Apr 26, 2021

  1. Address different header files location in case of musl 

    Musl doesn't provide a way of explicitly identifying it, so find it
implicitly as "not glibc and not uclibc".
    Vladyslav Movchan committed Apr 26, 2021
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  2. Define data types which are missing in musl

    Vladyslav Movchan committed Apr 26, 2021
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  3. There is no __getpagesize() in musl, but existing getpagesize() should 

    provide the same result
    Vladyslav Movchan committed Apr 26, 2021
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  4. There is no bits/wordsize.h header in musl

    Vladyslav Movchan committed Apr 26, 2021
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  5. Include linux/time.h for musl where timespec data type is defined 

    explicitly

This is necessary to address the following error with musl C library:
error: invalid application of 'sizeof' to incomplete type
'linux_syscall_support::timespec'
    Vladyslav Movchan committed Apr 26, 2021
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  6. Skip stat64 and fstat64 if they are macros and not functions 

    This is necessary to prevent creation of conflicting function
declarations in case of musl C library.
    Vladyslav Movchan committed Apr 26, 2021
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  7. Make it possible for non-amd64 platforms to pass coredumper_unittest

    Vladyslav Movchan committed Apr 26, 2021
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  8. Import the recent version of linux_syscall_support.h from 

    google-breakpad
    Vladyslav Movchan committed Apr 26, 2021
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  9. Adapt according to changed sys_prctl() definition

    Vladyslav Movchan committed Apr 26, 2021
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  10. Restore sys__sigprocmask wrapper used in linux_syscall_support_unittest

    Vladyslav Movchan committed Apr 26, 2021
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  11. Add missing aarch64 bits

    Vladyslav Movchan committed Apr 26, 2021
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  12. Add aarch64 support

    Vladyslav Movchan committed Apr 26, 2021
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  13. Correct waitpid wstatus argument type

    Vladyslav Movchan committed Apr 26, 2021
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  14. Add missing header for getpid()

    Vladyslav Movchan committed Apr 26, 2021
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  15. PT_LOAD segment might not always go first

    Vladyslav Movchan committed Apr 26, 2021
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  16. Interpret p_vaddr as an offset rather than absolute address

    Vladyslav Movchan committed Apr 26, 2021
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  17. Correct check for proper alignment

    Vladyslav Movchan committed Apr 26, 2021
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  18. Skip PT_NOTE segment obtained from vDSO 

    There should be just one PT_NOTE segment in a core file.
And otherwise gdb identify such core file as corrupted.
    Vladyslav Movchan committed Apr 26, 2021
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