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@stuij stuij released this 04 Nov 17:25
· 70 commits to main since this release
2022Q3
2982a9f

changes

  • aapcs64:

    • Across the document, use “thread” rather than “process”.
    • Add support for SME.

  • aadwarf64:

    • Describe SME-related changes to VG.

  • aaelf64:

    • Include the ABS64 and ABS32 relocations in Dynamic relocations.
    • ADRP + LDR GOT relaxation symbol should not be absolute.
    • Document new PT_AARCH64_MEMTAG_MTE segment.

  • aapcs64-morello:

    • Rework varargs for Morello.

  • aaelf64-morello:

    • Describe the purecap TLS implementation.

  • sysvabi64:

    • Add chapter on Program Loading and Dynamic Linking.

  • ehabi32:

    • PACBTI-M unwinding rule in case of nested functions.

  • not strictly part of the release but within this timeframe the legacy ABI documents previously hosted on developer.arm.com were added to the Git repo.

the specifications included in this release

ABI for the Arm 32-bit Architecture

  • ABI for the Arm Architecture - Base Standard - pdf, html
  • Procedure Call Standard for the Arm Architecture - pdf, html
  • ELF for the Arm Architecture - pdf, html
  • DWARF for the Arm Architecture - pdf, html
  • Base Platform ABI for the Arm Architecture - pdf, html
  • C++ ABI for the Arm Architecture - pdf, html
  • Exception Handling ABI for the Arm Architecture - pdf, html
  • Run-time ABI for the Arm Architecture - pdf, html
  • C Library for the Arm Architecture - pdf, html
  • Support for Debugging Overlaid Programs - pdf, html
  • Addenda to, and Errata in, the ABI for the ARM Architecture - pdf, html
  • ABI Advisory Note - SP 8-byte alignment - pdf, html

ABI for the Arm 64-bit Architecture

  • Procedure Call Standard for the Arm 64-bit Architecture - pdf, html
  • ELF for the Arm 64-bit Architecture - pdf, html
  • DWARF for the Arm 64-bit Architecture - pdf, html
  • C++ ABI for the Arm 64-bit Architecture - pdf, html
  • Vector Function ABI for the Arm 64-bit Architecture - pdf, html
  • System V ABI for the Arm 64-bit Architecture - pdf, html

PAuth ABI Extension

  • PAuth ABI Extension to ELF for the Arm 64-bit Architecture - pdf, html

Morello Extension

  • Morello Extension to the Procedure Call Standard for the Arm 64-bit Architecture - pdf, html
  • Morello Extension to ELF for the Arm 64-bit Architecture - pdf, html
  • Morello Extension to DWARF for the Arm 64-bit Architecture - pdf, html

Miscellaneous material

  • Semihosting for AArch32 and AArch64 - pdf, html

download bundle

PDFs of all the above specifications have also been bundled in this zip file.

other specifications

For other ABI specifications, please go to: https://developer.arm.com/architectures/system-architectures/software-standards/abi

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