make/linux/makefiles/ppc64.make

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# make c code know it is on a 64 bit platform.
CFLAGS += -D_LP64=1

ifeq ($(origin OPENJDK_TARGET_CPU_ENDIAN),undefined)
  # This can happen during hotspot standalone build. Set endianness from
  # uname. We assume build and target machines are the same.
  OPENJDK_TARGET_CPU_ENDIAN:=$(if $(filter ppc64le,$(shell uname -m)),little,big)
endif

ifeq ($(filter $(OPENJDK_TARGET_CPU_ENDIAN),big little),)
  $(error OPENJDK_TARGET_CPU_ENDIAN value should be 'big' or 'little')
endif

ifeq ($(OPENJDK_TARGET_CPU_ENDIAN),big)
  # fixes `relocation truncated to fit' error for gcc 4.1.
  CFLAGS += -mminimal-toc

  # finds use ppc64 instructions, but schedule for power5
  CFLAGS += -mcpu=powerpc64 -mtune=power5 -minsert-sched-nops=regroup_exact -mno-multiple -mno-string
else
  # Little endian machine uses ELFv2 ABI.
  CFLAGS += -DVM_LITTLE_ENDIAN -DABI_ELFv2

  # Use Power8, this is the first CPU to support PPC64 LE with ELFv2 ABI.
  CFLAGS += -mcpu=power7 -mtune=power8 -minsert-sched-nops=regroup_exact -mno-multiple -mno-string
endif