[PATCH 00/12] Add CET shadow stack support

["Schimpe, Christina" <christina.schimpe@intel.com>]

Hi all,

this is a series to add amd64 shadow stack support to GDB on linux.  
Shadow stack is part of the Control-flow Enforcement Technology (CET) by
Intel.

Intel's CET  provides the two capabilities to defend against ROP/COP/JOP
style control-flow subversion attacks: shadow stack and indirect branch
tracking (IBT).

While there is linux kernel support for CET shadow stack in userspace,
there is no linux kernel support available for userspace IBT, yet.
This series therefore focuses on CET shadow stack only.

I am looking forward to your feedback!

Regards,
Christina


Felix Willgerodt (1):
  gdb, bfd: amd64 linux coredump support with shadow stack.

Schimpe, Christina (11):
  gdb, testsuite: Rename set_sanitizer_default to append_environment.
  gdbserver: Add optional runtime register set type.
  gdbserver: Add assert in x86_linux_read_description.
  gdb: Sync up x86-gcc-cpuid.h with cpuid.h from gcc 14 branch.
  gdb, gdbserver: Use xstate_bv for target description creation on x86.
  gdb, gdbserver: Add support of Intel shadow stack pointer register.
  gdb: Handle shadow stack pointer register unwinding for amd64 linux.
  gdb, gdbarch: Enable inferior calls for shadow stack support.
  gdb: Implement amd64 linux shadow stack support for inferior calls.
  gdb, gdbarch: Introduce gdbarch method to get the shadow stack
    pointer.
  gdb: Enable displaced stepping with shadow stack on amd64 linux.

 bfd/elf.c                                     |  24 +++
 gdb/amd64-linux-nat.c                         |  17 ++
 gdb/amd64-linux-tdep.c                        | 197 +++++++++++++++++-
 gdb/amd64-tdep.c                              |  32 ++-
 gdb/amd64-tdep.h                              |   9 +-
 gdb/arch-utils.c                              |   8 +
 gdb/arch-utils.h                              |   5 +
 gdb/arch/amd64-linux-tdesc.c                  |  33 +--
 gdb/arch/amd64-linux-tdesc.h                  |   7 +-
 gdb/arch/amd64.c                              |  25 ++-
 gdb/arch/amd64.h                              |  10 +-
 gdb/arch/i386-linux-tdesc.c                   |  29 +--
 gdb/arch/i386-linux-tdesc.h                   |   5 +-
 gdb/arch/i386.c                               |  19 +-
 gdb/arch/i386.h                               |   8 +-
 gdb/arch/x86-linux-tdesc-features.c           |  56 ++---
 gdb/arch/x86-linux-tdesc-features.h           |  25 ++-
 gdb/doc/gdb.texinfo                           |  42 ++++
 gdb/features/Makefile                         |   2 +
 gdb/features/i386/32bit-ssp.c                 |  14 ++
 gdb/features/i386/32bit-ssp.xml               |  11 +
 gdb/features/i386/64bit-ssp.c                 |  14 ++
 gdb/features/i386/64bit-ssp.xml               |  11 +
 gdb/gdbarch-gen.c                             |  54 +++++
 gdb/gdbarch-gen.h                             |  20 ++
 gdb/gdbarch_components.py                     |  26 +++
 gdb/i386-tdep.c                               |  44 +++-
 gdb/i386-tdep.h                               |  11 +-
 gdb/infcall.c                                 |   6 +
 gdb/linux-tdep.c                              |  47 +++++
 gdb/linux-tdep.h                              |   7 +
 gdb/nat/x86-gcc-cpuid.h                       | 153 +++++++++++---
 gdb/nat/x86-linux-tdesc.c                     |  20 +-
 gdb/nat/x86-linux-tdesc.h                     |   7 +-
 gdb/nat/x86-linux.c                           |  55 +++++
 gdb/nat/x86-linux.h                           |   4 +
 .../gdb.arch/amd64-shadow-stack-cmds.exp      | 141 +++++++++++++
 .../gdb.arch/amd64-shadow-stack-corefile.exp  |  50 +++++
 .../gdb.arch/amd64-shadow-stack-disp-step.exp |  84 ++++++++
 gdb/testsuite/gdb.arch/amd64-shadow-stack.c   |  35 ++++
 gdb/testsuite/gdb.arch/amd64-ssp.exp          |  50 +++++
 .../gdb.base/inline-frame-cycle-unwind.py     |   4 +
 gdb/testsuite/gdb.base/libsegfault.exp        |   2 +-
 .../gdb.threads/attach-slow-waitpid.exp       |   2 +-
 gdb/testsuite/lib/gdb.exp                     |  77 ++++++-
 gdb/x86-linux-nat.c                           |  51 ++++-
 gdb/x86-linux-nat.h                           |  11 +
 gdb/x86-tdep.c                                |  22 ++
 gdb/x86-tdep.h                                |   9 +
 gdbserver/i387-fp.cc                          |  40 ++--
 gdbserver/linux-amd64-ipa.cc                  |  10 +-
 gdbserver/linux-i386-ipa.cc                   |   6 +-
 gdbserver/linux-low.cc                        |  40 ++--
 gdbserver/linux-low.h                         |   7 +-
 gdbserver/linux-x86-low.cc                    |  44 +++-
 gdbsupport/x86-xstate.h                       |   7 +-
 56 files changed, 1537 insertions(+), 212 deletions(-)
 create mode 100644 gdb/features/i386/32bit-ssp.c
 create mode 100644 gdb/features/i386/32bit-ssp.xml
 create mode 100644 gdb/features/i386/64bit-ssp.c
 create mode 100644 gdb/features/i386/64bit-ssp.xml
 create mode 100644 gdb/testsuite/gdb.arch/amd64-shadow-stack-cmds.exp
 create mode 100644 gdb/testsuite/gdb.arch/amd64-shadow-stack-corefile.exp
 create mode 100644 gdb/testsuite/gdb.arch/amd64-shadow-stack-disp-step.exp
 create mode 100644 gdb/testsuite/gdb.arch/amd64-shadow-stack.c
 create mode 100644 gdb/testsuite/gdb.arch/amd64-ssp.exp

-- 
2.34.1

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