diff options
| author | Matt Macy <mmacy@FreeBSD.org> | 2020-08-24 22:48:19 +0000 |
|---|---|---|
| committer | Matt Macy <mmacy@FreeBSD.org> | 2020-08-24 22:48:19 +0000 |
| commit | 3b0ce0e28db46d0403929aba45c682285e1ac217 (patch) | |
| tree | 91721e6e5518bd0d8113dee535898f2225443411 /config/kernel-objtool.m4 | |
Notes
Diffstat (limited to 'config/kernel-objtool.m4')
| -rw-r--r-- | config/kernel-objtool.m4 | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/config/kernel-objtool.m4 b/config/kernel-objtool.m4 new file mode 100644 index 0000000000000..bf60e7869213d --- /dev/null +++ b/config/kernel-objtool.m4 @@ -0,0 +1,45 @@ +dnl # +dnl # Check for objtool support. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_SRC_OBJTOOL], [ + + dnl # 4.6 API for compile-time stack validation + ZFS_LINUX_TEST_SRC([objtool], [ + #undef __ASSEMBLY__ + #include <asm/frame.h> + ],[ + #if !defined(FRAME_BEGIN) + CTASSERT(1); + #endif + ]) + + dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro + ZFS_LINUX_TEST_SRC([stack_frame_non_standard], [ + #include <linux/frame.h> + ],[ + #if !defined(STACK_FRAME_NON_STANDARD) + CTASSERT(1); + #endif + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL], [ + AC_MSG_CHECKING( + [whether compile-time stack validation (objtool) is available]) + ZFS_LINUX_TEST_RESULT([objtool], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1, + [kernel does stack verification]) + + AC_MSG_CHECKING([whether STACK_FRAME_NON_STANDARD is defined]) + ZFS_LINUX_TEST_RESULT([stack_frame_non_standard], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_STACK_FRAME_NON_STANDARD, 1, + [STACK_FRAME_NON_STANDARD is defined]) + ],[ + AC_MSG_RESULT(no) + ]) + ],[ + AC_MSG_RESULT(no) + ]) +]) |