target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch

   1 From 107c0964cb8db7ca28ac5199426414fdab3c274d Mon Sep 17 00:00:00 2001
   2 From: "Alexandros C. Couloumbis" <alex@ozo.com>
   3 Date: Fri, 7 Jul 2017 17:14:51 +0200
   4 Subject: hack: arch: powerpc: drop register save/restore library from modules
   5
   6 Upstream GCC uses a libgcc function for saving/restoring registers. This
   7 makes the code bigger, and upstream kernels need to carry that function
   8 for every single kernel module. Our GCC is patched to avoid those
   9 references, so we can drop the extra bloat for modules.
  10
  11 lede-commit: e8e1084654f50904e6bf77b70b2de3f137d7b3ec
  12 Signed-off-by: Alexandros C. Couloumbis <alex@ozo.com>
  13 ---
  14  arch/powerpc/Makefile | 1 -
  15  1 file changed, 1 deletion(-)
  16
  17 --- a/arch/powerpc/Makefile
  18 +++ b/arch/powerpc/Makefile
  19 @@ -59,19 +59,6 @@ machine-$(CONFIG_PPC64) += 64
  20  machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
  21  UTS_MACHINE := $(subst $(space),,$(machine-y))
  22
  23 -# XXX This needs to be before we override LD below
  24 -ifdef CONFIG_PPC32
  25 -KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
  26 -else
  27 -ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
  28 -# Have the linker provide sfpr if possible.
  29 -# There is a corresponding test in arch/powerpc/lib/Makefile
  30 -KBUILD_LDFLAGS_MODULE += --save-restore-funcs
  31 -else
  32 -KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
  33 -endif
  34 -endif
  35 -
  36  ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
  37  override LD    += -EL
  38  LDEMULATION    := lppc