72 lines
1.6 KiB
Plaintext
72 lines
1.6 KiB
Plaintext
dnl #
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dnl # Detect objtool functionality.
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dnl #
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dnl #
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dnl # Kernel 5.10: linux/frame.h was renamed linux/objtool.h
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL_HEADER], [
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AC_MSG_CHECKING([whether objtool header is available])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/objtool.h>
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],[
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],[
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AC_DEFINE(HAVE_KERNEL_OBJTOOL_HEADER, 1,
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[kernel has linux/objtool.h])
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AC_MSG_RESULT(linux/objtool.h)
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],[
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AC_MSG_RESULT(linux/frame.h)
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])
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])
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dnl #
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dnl # Check for objtool support.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_OBJTOOL], [
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dnl # 4.6 API for compile-time stack validation
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ZFS_LINUX_TEST_SRC([objtool], [
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#undef __ASSEMBLY__
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#include <asm/ptrace.h>
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#include <asm/frame.h>
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],[
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#if !defined(FRAME_BEGIN)
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#error "FRAME_BEGIN is not defined"
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#endif
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])
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dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro
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ZFS_LINUX_TEST_SRC([stack_frame_non_standard], [
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#ifdef HAVE_KERNEL_OBJTOOL_HEADER
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#include <linux/objtool.h>
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#else
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#include <linux/frame.h>
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#endif
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],[
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#if !defined(STACK_FRAME_NON_STANDARD)
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#error "STACK_FRAME_NON_STANDARD is not defined."
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#endif
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL], [
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AC_MSG_CHECKING(
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[whether compile-time stack validation (objtool) is available])
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ZFS_LINUX_TEST_RESULT([objtool], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KERNEL_OBJTOOL, 1,
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[kernel does stack verification])
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AC_MSG_CHECKING([whether STACK_FRAME_NON_STANDARD is defined])
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ZFS_LINUX_TEST_RESULT([stack_frame_non_standard], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_STACK_FRAME_NON_STANDARD, 1,
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[STACK_FRAME_NON_STANDARD is defined])
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],[
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AC_MSG_RESULT(no)
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])
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],[
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AC_MSG_RESULT(no)
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])
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])
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