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.
  16 no-special-regs := $(sort $(foreach n,40 41 50 51 60 61 62 63 \
  17                                       $(foreach m,2 3 4 5 6 7 8 9, \
  18                                                   3$m 4$m 5$m),\
  19                                     -ffixed-$n)) \
  20                    $(sort $(foreach n,$(foreach m,0 1 2 3 4 5 6 7 8 9,\
  21                                                 $m 1$m 2$m) 30 31,\
  22                                     -ffixed-v$n)) \
  23                    -ffixed-vrsave -ffixed-vscr
  24
  25 ifeq ($(subdir),csu)
  26 sysdep_routines += hp-timing
  27 elide-routines.os += hp-timing
  28 ifneq ($(elf),no)
  29 # The initfini generation code doesn't work in the presence of -fPIC, so
  30 # we use -fpic instead which is much better.
  31 CFLAGS-initfini.s += -fpic -O1
  32 endif
  33 endif
  34
  35 ifeq ($(subdir),elf)
  36 # help gcc inline asm code from dl-machine.h
  37 +cflags += -finline-limit=2000
  38 endif
  39
  40 ifeq ($(subdir),gmon)
  41 # The assembly functions assume that fp arg regs are not trashed.
  42 # Compiling with -msoft-float ensures that fp regs are not used
  43 # for moving memory around.
  44 CFLAGS-mcount.c += $(no-special-regs)
  45 endif