sys/platform/vkernel64/conf/kern.mk

   1 #
   2 # Prohibit the use of FP registers in the kernel.  The user FP state is
   3 # only saved and restored under strictly managed conditions and mainline
   4 # kernel code cannot safely use the FP system.
   5 #
   6 .if ${CCVER:Mgcc*}
   7 CFLAGS+=        -mpreferred-stack-boundary=4
   8
   9 # Retpoline spectre protection
  10 #
  11 .if ${CCVER:Mgcc8*}
  12 CFLAGS+=        -mindirect-branch=thunk-inline
  13 .endif
  14
  15 .endif
  16
  17 CFLAGS+=        -fno-stack-protector -fno-strict-aliasing
  18 CFLAGS+=        -fno-strict-overflow
  19 CFLAGS+=        -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3
  20 CFLAGS+=        -D_KERNEL_VIRTUAL
  21 CFLAGS+=        -fno-omit-frame-pointer
  22
  23 # Remove the dynamic library hack for now
  24 #
  25 SYSTEM_OBJS:= ${SYSTEM_OBJS:Nhack.So}
  26
  27 INLINE_LIMIT=   8000