[PATCH] D20884: This patch attempts to primitive support for Win64 asan

[Wang Wei via llvm-commits]

wang0109 created this revision.
wang0109 added reviewers: etienneb, rnk.
wang0109 added a subscriber: llvm-commits.
Herald added a subscriber: kubabrecka.

Some known issues are:
  - When "head" include instructions that involve branching,
    the "cut and paste" approach may break down in a way that
    function interception still work but calling back the original
    function does not work.
  - The jmp [rip -8] saves some bytes in the "head" but finding the
    safe zone of 0xCC is not implemented yet. So it may stomp on
    preceding codes.
  - The shadow offset is not working yet on Win64. More complexity
    maybe involved since there are some differences regarding virtual
    address space between Window 8 and Windows 8.1/10.

http://reviews.llvm.org/D20884

Files:
  lib/asan/asan_interceptors.cc
  lib/asan/asan_rtl.cc
  lib/interception/interception_win.cc
  lib/sanitizer_common/sanitizer_platform_interceptors.h

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