sysdeps/powerpc/powerpc64/Makefile

   1 # Powerpc64 specific build options.
   2 # this is ./sysdeps/powerpc/powerpc64/Makefile
   3
   4 # Each TOC entry takes 8 bytes and the TOC holds up to 2^16 bytes,
   5 # or 8192 entries.
   6 # If -fpic is not specified, the latest gcc-3.2.1 now generates
   7 # different code for call stubs (without the TOC reload).
   8 # Shared objects need the TOC reload so specify -fpic.
   9 ifeq (yes,$(build-shared))
  10 pic-ccflag = -fpic
  11 endif
  12
  13 # These flags prevent FPU or Altivec registers from being used,
  14 # for code called in contexts that is not allowed to touch those registers.
  15 # Stupid GCC requires us to pass all these ridiculous switches.  We need to
  16 # pass the -mno-* switches as well to prevent the compiler from attempting
  17 # to emit altivec or vsx instructions, especially when the registers aren't
  18 # available.
  19 no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \
  20                                       $(foreach m,2 3 4 5 6 7 8 9, \
  21                                                   3$m 4$m 5$m),\
  22                                     -ffixed-$n)) \
  23                    $(sort $(foreach n,$(foreach m,0 1 2 3 4 5 6 7 8 9,\
  24                                                 $m 1$m 2$m) 30 31,\
  25                                     -ffixed-v$n)) \
  26                    -ffixed-vrsave -ffixed-vscr -mno-altivec -mno-vsx
  27
  28 # Need to prevent gcc from using fprs in code used during dynamic linking.
  29
  30 CFLAGS-dl-runtime.os = $(no-special-regs)
  31 CFLAGS-dl-lookup.os = $(no-special-regs)
  32 CFLAGS-dl-misc.os = $(no-special-regs)
  33 CFLAGS-rtld-mempcpy.os = $(no-special-regs)
  34 CFLAGS-rtld-memmove.os = $(no-special-regs)
  35 CFLAGS-rtld-memchr.os = $(no-special-regs)
  36 CFLAGS-rtld-strnlen.os = $(no-special-regs)
  37
  38 ifeq ($(subdir),csu)
  39 sysdep_routines += hp-timing
  40 elide-routines.os += hp-timing
  41 endif
  42
  43 ifeq ($(subdir),elf)
  44 # help gcc inline asm code from dl-machine.h
  45 +cflags += -finline-limit=2000
  46 endif
  47
  48 ifeq ($(subdir),gmon)
  49 # The assembly functions assume that fp arg regs are not trashed.
  50 # Compiling with -msoft-float ensures that fp regs are not used
  51 # for moving memory around.
  52 CFLAGS-mcount.c += $(no-special-regs)
  53 sysdep_routines += ppc-mcount
  54 endif