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 ($(subdir),csu)
   9 # On i686 we must avoid generating the trampoline functions generated
  10 # to get the GOT pointer.
  11 CFLAGS-initfini.s += -march=i386 -mtune=i386
  12 endif
  13
  14 ifeq ($(subdir),gmon)
  15 sysdep_routines += i386-mcount
  16 endif
  17
  18 ifeq ($(subdir),elf)
  19 CFLAGS-rtld.c += -Wno-uninitialized -Wno-unused
  20 CFLAGS-dl-load.c += -Wno-unused
  21 CFLAGS-dl-reloc.c += -Wno-unused
  22 endif
  23
  24 ifeq ($(subdir),debug)
  25 CFLAGS-backtrace.c += -fexceptions
  26 endif
  27
  28 # Most of the glibc routines don't ever call user defined callbacks
  29 # nor use any FPU or SSE* and as such don't need bigger %esp alignment
  30 # than 4 bytes.
  31 # Lots of routines in math will use FPU, so make math subdir an exception
  32 # here.
  33 ifeq ($(subdir),math)
  34 sysdep-CFLAGS += -mpreferred-stack-boundary=4
  35 else
  36 ifeq ($(subdir),csu)
  37 sysdep-CFLAGS += -mpreferred-stack-boundary=4
  38 else
  39 sysdep-CFLAGS += -mpreferred-stack-boundary=2
  40 # Likewise, any function which calls user callbacks
  41 uses-callbacks += -mpreferred-stack-boundary=4
  42 # Likewise, any stack alignment tests
  43 stack-align-test-flags += -malign-double -mpreferred-stack-boundary=4
  44 endif
  45 endif
  46
  47 # And a couple of other routines
  48 ifeq ($(subdir),stdlib)
  49 CFLAGS-exit.c += -mpreferred-stack-boundary=4
  50 endif
  51 ifeq ($(subdir),elf)
  52 CFLAGS-dl-init.c += -mpreferred-stack-boundary=4
  53 CFLAGS-dl-fini.c += -mpreferred-stack-boundary=4
  54 CFLAGS-dl-open.c += -mpreferred-stack-boundary=4
  55 CFLAGS-dl-close.c += -mpreferred-stack-boundary=4
  56 CFLAGS-dl-error.c += -mpreferred-stack-boundary=4
  57 endif
  58 ifeq ($(subdir),dlfcn)
  59 CFLAGS-dlopen.c += -mpreferred-stack-boundary=4
  60 CFLAGS-dlopenold.c += -mpreferred-stack-boundary=4
  61 CFLAGS-dlclose.c += -mpreferred-stack-boundary=4
  62 CFLAGS-dlerror.c += -mpreferred-stack-boundary=4
  63 endif
  64
  65 ifneq (,$(filter -mno-tls-direct-seg-refs,$(CFLAGS)))
  66 defines += -DNO_TLS_DIRECT_SEG_REFS
  67 endif
  68
  69 ifeq ($(subdir),elf)
  70 sysdep-dl-routines += tlsdesc dl-tlsdesc
  71 sysdep_routines += tlsdesc dl-tlsdesc
  72 sysdep-rtld-routines += tlsdesc dl-tlsdesc
  73 endif
  74
  75 ifeq ($(subdir),csu)
  76 gen-as-const-headers += tlsdesc.sym
  77 endif