sysdeps/i386/Makefile

   1 # The mpn functions need a #define for asm syntax flavor.
   2 # Every i386 port in use uses gas syntax (I think).
   3 asm-CPPFLAGS += -DGAS_SYNTAX
   4
   5 # The i386 `long double' is a distinct type we support.
   6 long-double-fcts = yes
   7
   8 ifeq ($(subdir),gmon)
   9 sysdep_routines += i386-mcount
  10 endif
  11
  12 ifeq ($(subdir),elf)
  13 CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused
  14 CFLAGS-dl-load.c += -Wno-unused
  15 CFLAGS-dl-reloc.c += -Wno-unused
  16 endif
  17
  18 ifeq ($(subdir),debug)
  19 CFLAGS-backtrace.c += -fexceptions
  20 endif
  21
  22 # Most of the glibc routines don't ever call user defined callbacks
  23 # nor use any FPU or SSE* and as such don't need bigger %esp alignment
  24 # than 4 bytes.
  25 # Lots of routines in math will use FPU, so make math subdir an exception
  26 # here.
  27 # In gcc 4.6 (and maybe earlier?) giving -mpreferred-stack-boundary=2 is
  28 # an error, so don't try to reduce it here like we used to.  We still
  29 # explicit set -mpreferred-stack-boundary=4 the places where it matters,
  30 # in case an older compiler defaulted to 2.
  31 ifeq ($(subdir),math)
  32 sysdep-CFLAGS += -mpreferred-stack-boundary=4
  33 else
  34 ifeq ($(subdir),csu)
  35 sysdep-CFLAGS += -mpreferred-stack-boundary=4
  36 else
  37 # Likewise, any function which calls user callbacks
  38 uses-callbacks += -mpreferred-stack-boundary=4
  39 # Likewise, any stack alignment tests
  40 stack-align-test-flags += -malign-double -mpreferred-stack-boundary=4
  41 endif
  42 endif
  43
  44 # And a couple of other routines
  45 ifeq ($(subdir),stdlib)
  46 CFLAGS-exit.c += -mpreferred-stack-boundary=4
  47 CFLAGS-cxa_finalize.c += -mpreferred-stack-boundary=4
  48 endif
  49 ifeq ($(subdir),elf)
  50 CFLAGS-dl-init.c += -mpreferred-stack-boundary=4
  51 CFLAGS-dl-fini.c += -mpreferred-stack-boundary=4
  52 CFLAGS-dl-open.c += -mpreferred-stack-boundary=4
  53 CFLAGS-dl-close.c += -mpreferred-stack-boundary=4
  54 CFLAGS-dl-error.c += -mpreferred-stack-boundary=4
  55 endif
  56 ifeq ($(subdir),dlfcn)
  57 CFLAGS-dlopen.c += -mpreferred-stack-boundary=4
  58 CFLAGS-dlopenold.c += -mpreferred-stack-boundary=4
  59 CFLAGS-dlclose.c += -mpreferred-stack-boundary=4
  60 CFLAGS-dlerror.c += -mpreferred-stack-boundary=4
  61 endif
  62
  63 ifneq (,$(filter -mno-tls-direct-seg-refs,$(CFLAGS)))
  64 defines += -DNO_TLS_DIRECT_SEG_REFS
  65 endif
  66
  67 ifeq ($(subdir),elf)
  68 sysdep-dl-routines += tlsdesc dl-tlsdesc
  69 sysdep_routines += tlsdesc dl-tlsdesc
  70 sysdep-rtld-routines += tlsdesc dl-tlsdesc
  71 endif
  72
  73 ifeq ($(subdir),csu)
  74 gen-as-const-headers += tlsdesc.sym
  75 endif