share/mk/bsd.cpu.mk

   1 # $FreeBSD$
   2
   3 # Set default CPU compile flags and baseline CPUTYPE for each arch.  The
   4 # compile flags must support the minimum CPU type for each architecture but
   5 # may tune support for more advanced processors.
   6
   7 .if !defined(CPUTYPE) || empty(CPUTYPE)
   8 _CPUCFLAGS =
   9 . if ${MACHINE_CPUARCH} == "aarch64"
  10 MACHINE_CPU = arm64
  11 . elif ${MACHINE_CPUARCH} == "amd64"
  12 MACHINE_CPU = amd64 sse2 sse mmx
  13 . elif ${MACHINE_CPUARCH} == "arm"
  14 MACHINE_CPU = arm
  15 . elif ${MACHINE_CPUARCH} == "i386"
  16 MACHINE_CPU = i486
  17 . elif ${MACHINE_ARCH} == "powerpc"
  18 MACHINE_CPU = aim
  19 . elif ${MACHINE_ARCH} == "powerpc64"
  20 MACHINE_CPU = aim altivec
  21 . elif ${MACHINE_ARCH} == "powerpc64le"
  22 MACHINE_CPU = aim altivec vsx vsx2
  23 . elif ${MACHINE_CPUARCH} == "riscv"
  24 MACHINE_CPU = riscv
  25 . endif
  26 .else
  27
  28 # Handle aliases (not documented in make.conf to avoid user confusion
  29 # between e.g. i586 and pentium)
  30
  31 . if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
  32 .  if ${CPUTYPE} == "barcelona"
  33 CPUTYPE = amdfam10
  34 .  elif ${CPUTYPE} == "skx"
  35 CPUTYPE = skylake-avx512
  36 .  elif ${CPUTYPE} == "core-avx2"
  37 CPUTYPE = haswell
  38 .  elif ${CPUTYPE} == "core-avx-i"
  39 CPUTYPE = ivybridge
  40 .  elif ${CPUTYPE} == "corei7-avx"
  41 CPUTYPE = sandybridge
  42 .  elif ${CPUTYPE} == "corei7"
  43 CPUTYPE = nehalem
  44 .  elif ${CPUTYPE} == "slm"
  45 CPUTYPE = silvermont
  46 .  elif ${CPUTYPE} == "atom"
  47 CPUTYPE = bonnell
  48 .  elif ${CPUTYPE} == "core"
  49 CPUTYPE = prescott
  50 .  endif
  51 .  if ${MACHINE_CPUARCH} == "amd64"
  52 .   if ${CPUTYPE} == "prescott"
  53 CPUTYPE = nocona
  54 .   endif
  55 .  else
  56 .   if ${CPUTYPE} == "k7"
  57 CPUTYPE = athlon
  58 .   elif ${CPUTYPE} == "p4"
  59 CPUTYPE = pentium4
  60 .   elif ${CPUTYPE} == "p4m"
  61 CPUTYPE = pentium4m
  62 .   elif ${CPUTYPE} == "p3"
  63 CPUTYPE = pentium3
  64 .   elif ${CPUTYPE} == "p3m"
  65 CPUTYPE = pentium3m
  66 .   elif ${CPUTYPE} == "p-m"
  67 CPUTYPE = pentium-m
  68 .   elif ${CPUTYPE} == "p2"
  69 CPUTYPE = pentium2
  70 .   elif ${CPUTYPE} == "i686"
  71 CPUTYPE = pentiumpro
  72 .   elif ${CPUTYPE} == "i586/mmx"
  73 CPUTYPE = pentium-mmx
  74 .   elif ${CPUTYPE} == "i586"
  75 CPUTYPE = pentium
  76 .   endif
  77 .  endif
  78 . endif
  79
  80 ###############################################################################
  81 # Logic to set up correct gcc optimization flag.  This must be included
  82 # after /etc/make.conf so it can react to the local value of CPUTYPE
  83 # defined therein.  Consult:
  84 #       http://gcc.gnu.org/onlinedocs/gcc/ARM-Options.html
  85 #       http://gcc.gnu.org/onlinedocs/gcc/RS-6000-and-PowerPC-Options.html
  86 #       http://gcc.gnu.org/onlinedocs/gcc/SPARC-Options.html
  87 #       http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html
  88
  89 . if ${MACHINE_CPUARCH} == "i386"
  90 .  if ${CPUTYPE} == "crusoe"
  91 _CPUCFLAGS = -march=i686 -falign-functions=0 -falign-jumps=0 -falign-loops=0
  92 .  elif ${CPUTYPE} == "k5"
  93 _CPUCFLAGS = -march=pentium
  94 .  elif ${CPUTYPE} == "c7"
  95 _CPUCFLAGS = -march=c3-2
  96 .  else
  97 _CPUCFLAGS = -march=${CPUTYPE}
  98 .  endif
  99 . elif ${MACHINE_CPUARCH} == "amd64"
 100 _CPUCFLAGS = -march=${CPUTYPE}
 101 . elif ${MACHINE_CPUARCH} == "arm"
 102 .  if ${CPUTYPE} == "xscale"
 103 #XXX: gcc doesn't seem to like -mcpu=xscale, and dies while rebuilding itself
 104 #_CPUCFLAGS = -mcpu=xscale
 105 _CPUCFLAGS = -march=armv5te -D__XSCALE__
 106 .  elif ${CPUTYPE:M*soft*} != ""
 107 _CPUCFLAGS = -mfloat-abi=softfp
 108 .  elif ${CPUTYPE} == "cortexa"
 109 _CPUCFLAGS = -march=armv7 -mfpu=vfp
 110 .  elif ${CPUTYPE:Marmv[67]*} != ""
 111 # Handle all the armvX types that FreeBSD runs:
 112 #       armv6, armv6t2, armv7, armv7-a, armv7ve
 113 # they require -march=. All the others require -mcpu=.
 114 _CPUCFLAGS = -march=${CPUTYPE}
 115 .  else
 116 # Common values for FreeBSD
 117 # arm: (any arm v4 or v5 processor you are targeting)
 118 #       arm920t, arm926ej-s, marvell-pj4, fa526, fa626,
 119 #       fa606te, fa626te, fa726te
 120 # armv6:
 121 #       arm1176jzf-s
 122 # armv7: generic-armv7-a, cortex-a5, cortex-a7, cortex-a8, cortex-a9,
 123 #       cortex-a12, cortex-a15, cortex-a17
 124 #       cortex-a53, cortex-a57, cortex-a72,
 125 #       exynos-m1
 126 _CPUCFLAGS = -mcpu=${CPUTYPE}
 127 . endif
 128 . elif ${MACHINE_ARCH} == "powerpc"
 129 .  if ${CPUTYPE} == "e500"
 130 _CPUCFLAGS = -Wa,-me500 -msoft-float
 131 .  else
 132 _CPUCFLAGS = -mcpu=${CPUTYPE}
 133 .  endif
 134 . elif ${MACHINE_ARCH:Mpowerpc64*} != ""
 135 _CPUCFLAGS = -mcpu=${CPUTYPE}
 136 . elif ${MACHINE_CPUARCH} == "aarch64"
 137 .  if ${CPUTYPE:Marmv*} != ""
 138 # Use -march when the CPU type is an architecture value, e.g. armv8.1-a
 139 _CPUCFLAGS = -march=${CPUTYPE}
 140 .  else
 141 # Otherwise assume we have a CPU type
 142 _CPUCFLAGS = -mcpu=${CPUTYPE}
 143 .  endif
 144 . endif
 145
 146 # Set up the list of CPU features based on the CPU type.  This is an
 147 # unordered list to make it easy for client makefiles to test for the
 148 # presence of a CPU feature.
 149
 150 ########## i386
 151 . if ${MACHINE_CPUARCH} == "i386"
 152 .  if ${CPUTYPE} == "znver3" || ${CPUTYPE} == "znver2" || \
 153     ${CPUTYPE} == "znver1"
 154 MACHINE_CPU = avx2 avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
 155 .  elif ${CPUTYPE} == "bdver4"
 156 MACHINE_CPU = xop avx2 avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
 157 .  elif ${CPUTYPE} == "bdver3" || ${CPUTYPE} == "bdver2" || \
 158     ${CPUTYPE} == "bdver1"
 159 MACHINE_CPU = xop avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
 160 .  elif ${CPUTYPE} == "btver2"
 161 MACHINE_CPU = avx sse42 sse41 ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
 162 .  elif ${CPUTYPE} == "btver1"
 163 MACHINE_CPU = ssse3 sse4a sse3 sse2 sse mmx k6 k5 i586
 164 .  elif ${CPUTYPE} == "amdfam10"
 165 MACHINE_CPU = athlon-xp athlon k7 3dnow sse4a sse3 sse2 sse mmx k6 k5 i586
 166 .  elif ${CPUTYPE} == "opteron-sse3" || ${CPUTYPE} == "athlon64-sse3"
 167 MACHINE_CPU = athlon-xp athlon k7 3dnow sse3 sse2 sse mmx k6 k5 i586
 168 .  elif ${CPUTYPE} == "opteron" || ${CPUTYPE} == "athlon64" || \
 169     ${CPUTYPE} == "athlon-fx"
 170 MACHINE_CPU = athlon-xp athlon k7 3dnow sse2 sse mmx k6 k5 i586
 171 .  elif ${CPUTYPE} == "athlon-mp" || ${CPUTYPE} == "athlon-xp" || \
 172     ${CPUTYPE} == "athlon-4"
 173 MACHINE_CPU = athlon-xp athlon k7 3dnow sse mmx k6 k5 i586
 174 .  elif ${CPUTYPE} == "athlon" || ${CPUTYPE} == "athlon-tbird"
 175 MACHINE_CPU = athlon k7 3dnow mmx k6 k5 i586
 176 .  elif ${CPUTYPE} == "k6-3" || ${CPUTYPE} == "k6-2" || ${CPUTYPE} == "geode"
 177 MACHINE_CPU = 3dnow mmx k6 k5 i586
 178 .  elif ${CPUTYPE} == "k6"
 179 MACHINE_CPU = mmx k6 k5 i586
 180 .  elif ${CPUTYPE} == "k5"
 181 MACHINE_CPU = k5 i586
 182 .  elif ${CPUTYPE} == "sapphirerapids" || ${CPUTYPE} == "tigerlake" || \
 183     ${CPUTYPE} == "cooperlake" || ${CPUTYPE} == "cascadelake" || \
 184     ${CPUTYPE} == "icelake-server" || ${CPUTYPE} == "icelake-client" || \
 185     ${CPUTYPE} == "cannonlake" || ${CPUTYPE} == "knm" || \
 186     ${CPUTYPE} == "skylake-avx512" || ${CPUTYPE} == "knl" || \
 187     ${CPUTYPE} == "x86-64-v4"
 188 MACHINE_CPU = avx512 avx2 avx sse42 sse41 ssse3 sse3 sse2 sse i686 mmx i586
 189 .  elif ${CPUTYPE} == "alderlake" || ${CPUTYPE} == "skylake" || \
 190     ${CPUTYPE} == "broadwell" || ${CPUTYPE} == "haswell" || \
 191     ${CPUTYPE} == "x86-64-v3"
 192 MACHINE_CPU = avx2 avx sse42 sse41 ssse3 sse3 sse2 sse i686 mmx i586
 193 .  elif ${CPUTYPE} == "ivybridge" || ${CPUTYPE} == "sandybridge"
 194 MACHINE_CPU = avx sse42 sse41 ssse3 sse3 sse2 sse i686 mmx i586
 195 .  elif ${CPUTYPE} == "tremont" || ${CPUTYPE} == "goldmont-plus" || \
 196     ${CPUTYPE} == "goldmont" || ${CPUTYPE} == "westmere" || \
 197     ${CPUTYPE} == "nehalem" || ${CPUTYPE} == "silvermont" || \
 198     ${CPUTYPE} == "x86-64-v2"
 199 MACHINE_CPU = sse42 sse41 ssse3 sse3 sse2 sse i686 mmx i586
 200 .  elif ${CPUTYPE} == "penryn"
 201 MACHINE_CPU = sse41 ssse3 sse3 sse2 sse i686 mmx i586
 202 .  elif ${CPUTYPE} == "core2" || ${CPUTYPE} == "bonnell"
 203 MACHINE_CPU = ssse3 sse3 sse2 sse i686 mmx i586
 204 .  elif ${CPUTYPE} == "yonah" || ${CPUTYPE} == "prescott"
 205 MACHINE_CPU = sse3 sse2 sse i686 mmx i586
 206 .  elif ${CPUTYPE} == "pentium4" || ${CPUTYPE} == "pentium4m" || \
 207     ${CPUTYPE} == "pentium-m" || ${CPUTYPE} == "x86-64"
 208 MACHINE_CPU = sse2 sse i686 mmx i586
 209 .  elif ${CPUTYPE} == "pentium3" || ${CPUTYPE} == "pentium3m"
 210 MACHINE_CPU = sse i686 mmx i586
 211 .  elif ${CPUTYPE} == "pentium2"
 212 MACHINE_CPU = i686 mmx i586
 213 .  elif ${CPUTYPE} == "pentiumpro"
 214 MACHINE_CPU = i686 i586
 215 .  elif ${CPUTYPE} == "pentium-mmx"
 216 MACHINE_CPU = mmx i586
 217 .  elif ${CPUTYPE} == "pentium"
 218 MACHINE_CPU = i586
 219 .  elif ${CPUTYPE} == "c7"
 220 MACHINE_CPU = sse3 sse2 sse i686 mmx i586
 221 .  elif ${CPUTYPE} == "c3-2"
 222 MACHINE_CPU = sse i686 mmx i586
 223 .  elif ${CPUTYPE} == "c3"
 224 MACHINE_CPU = 3dnow mmx i586
 225 .  elif ${CPUTYPE} == "winchip2"
 226 MACHINE_CPU = 3dnow mmx
 227 .  elif ${CPUTYPE} == "winchip-c6"
 228 MACHINE_CPU = mmx
 229 .  endif
 230 MACHINE_CPU += i486
 231 ########## amd64
 232 . elif ${MACHINE_CPUARCH} == "amd64"
 233 .  if ${CPUTYPE} == "znver3" || ${CPUTYPE} == "znver2" || \
 234     ${CPUTYPE} == "znver1"
 235 MACHINE_CPU = avx2 avx sse42 sse41 ssse3 sse4a sse3
 236 .  elif ${CPUTYPE} == "bdver4"
 237 MACHINE_CPU = xop avx2 avx sse42 sse41 ssse3 sse4a sse3
 238 .  elif ${CPUTYPE} == "bdver3" || ${CPUTYPE} == "bdver2" || \
 239     ${CPUTYPE} == "bdver1"
 240 MACHINE_CPU = xop avx sse42 sse41 ssse3 sse4a sse3
 241 .  elif ${CPUTYPE} == "btver2"
 242 MACHINE_CPU = avx sse42 sse41 ssse3 sse4a sse3
 243 .  elif ${CPUTYPE} == "btver1"
 244 MACHINE_CPU = ssse3 sse4a sse3
 245 .  elif ${CPUTYPE} == "amdfam10"
 246 MACHINE_CPU = k8 3dnow sse4a sse3
 247 .  elif ${CPUTYPE} == "opteron-sse3" || ${CPUTYPE} == "athlon64-sse3" || \
 248     ${CPUTYPE} == "k8-sse3"
 249 MACHINE_CPU = k8 3dnow sse3
 250 .  elif ${CPUTYPE} == "opteron" || ${CPUTYPE} == "athlon64" || \
 251     ${CPUTYPE} == "athlon-fx" || ${CPUTYPE} == "k8"
 252 MACHINE_CPU = k8 3dnow
 253 .  elif ${CPUTYPE} == "sapphirerapids" || ${CPUTYPE} == "tigerlake" || \
 254     ${CPUTYPE} == "cooperlake" || ${CPUTYPE} == "cascadelake" || \
 255     ${CPUTYPE} == "icelake-server" || ${CPUTYPE} == "icelake-client" || \
 256     ${CPUTYPE} == "cannonlake" || ${CPUTYPE} == "knm" || \
 257     ${CPUTYPE} == "skylake-avx512" || ${CPUTYPE} == "knl" || \
 258     ${CPUTYPE} == "x86-64-v4"
 259 MACHINE_CPU = avx512 avx2 avx sse42 sse41 ssse3 sse3
 260 .  elif ${CPUTYPE} == "alderlake" || ${CPUTYPE} == "skylake" || \
 261     ${CPUTYPE} == "broadwell" || ${CPUTYPE} == "haswell" || \
 262     ${CPUTYPE} == "x86-64-v3"
 263 MACHINE_CPU = avx2 avx sse42 sse41 ssse3 sse3
 264 .  elif ${CPUTYPE} == "ivybridge" || ${CPUTYPE} == "sandybridge"
 265 MACHINE_CPU = avx sse42 sse41 ssse3 sse3
 266 .  elif ${CPUTYPE} == "tremont" || ${CPUTYPE} == "goldmont-plus" || \
 267     ${CPUTYPE} == "goldmont" || ${CPUTYPE} == "westmere" || \
 268     ${CPUTYPE} == "nehalem" || ${CPUTYPE} == "silvermont" || \
 269     ${CPUTYPE} == "x86-64-v2"
 270 MACHINE_CPU = sse42 sse41 ssse3 sse3
 271 .  elif ${CPUTYPE} == "penryn"
 272 MACHINE_CPU = sse41 ssse3 sse3
 273 .  elif ${CPUTYPE} == "core2" || ${CPUTYPE} == "bonnell"
 274 MACHINE_CPU = ssse3 sse3
 275 .  elif ${CPUTYPE} == "nocona"
 276 MACHINE_CPU = sse3
 277 .  endif
 278 MACHINE_CPU += amd64 sse2 sse mmx
 279 ########## powerpc
 280 . elif ${MACHINE_ARCH} == "powerpc"
 281 .  if ${CPUTYPE} == "e500"
 282 MACHINE_CPU = booke softfp
 283 .  elif ${CPUTYPE} == "g4"
 284 MACHINE_CPU = aim altivec
 285 .  else
 286 MACHINE_CPU= aim
 287 .  endif
 288 . elif ${MACHINE_ARCH} == "powerpc64"
 289 .  if ${CPUTYPE} == "e5500"
 290 MACHINE_CPU = booke
 291 .  elif ${CPUTYPE} == power7
 292 MACHINE_CPU = altivec vsx
 293 .  elif ${CPUTYPE} == power8
 294 MACHINE_CPU = altivec vsx vsx2
 295 .  elif ${CPUTYPE} == power9
 296 MACHINE_CPU = altivec vsx vsx2 vsx3
 297 .  else
 298 MACHINE_CPU = aim altivec
 299 .  endif
 300 . elif ${MACHINE_ARCH} == "powerpc64le"
 301 MACHINE_CPU = aim altivec vsx vsx2
 302 .  if ${CPUTYPE} == power9
 303 MACHINE_CPU += vsx3
 304 .  endif
 305 ########## riscv
 306 . elif ${MACHINE_CPUARCH} == "riscv"
 307 MACHINE_CPU = riscv
 308 . endif
 309 .endif
 310
 311 ########## arm
 312 .if ${MACHINE_CPUARCH} == "arm"
 313 MACHINE_CPU += arm
 314 . if ${MACHINE_ARCH:Marmv6*} != ""
 315 MACHINE_CPU += armv6
 316 . endif
 317 . if ${MACHINE_ARCH:Marmv7*} != ""
 318 MACHINE_CPU += armv7
 319 . endif
 320 # Normally armv6 and armv7 are hard float ABI from FreeBSD 11 onwards. However
 321 # when CPUTYPE has 'soft' in it, we use the soft-float ABI to allow building of
 322 # soft-float ABI libraries. In this case, we have to add the -mfloat-abi=softfp
 323 # to force that.
 324 . if defined(CPUTYPE) && ${CPUTYPE:M*soft*} != ""
 325 # Needs to be CFLAGS not _CPUCFLAGS because it's needed for the ABI
 326 # not a nice optimization. Please note: softfp ABI uses hardware floating
 327 # instructions, but passes arguments to function calls in integer regsiters.
 328 # -mfloat-abi=soft is full software floating point, but is not currently
 329 # supported. softfp support in FreeBSD may disappear in FreeBSD 13.0 since
 330 # it was a transition tool from FreeBSD 10 to 11 and is a bit of an odd duck.
 331 CFLAGS += -mfloat-abi=softfp
 332 . endif
 333 .endif
 334
 335 .if ${MACHINE_ARCH} == "powerpc" || ${MACHINE_ARCH} == "powerpcspe"
 336 LDFLAGS.bfd+= -Wl,--secure-plt
 337 .endif
 338
 339 .if ${MACHINE_ARCH} == "powerpcspe"
 340 CFLAGS += -mcpu=8548 -mspe
 341 CFLAGS.gcc+= -mabi=spe -mfloat-gprs=double -Wa,-me500
 342 .endif
 343
 344 .if ${MACHINE_CPUARCH} == "riscv"
 345 CFLAGS += -march=rv64imafdc -mabi=lp64d
 346 .endif
 347
 348 # NB: COPTFLAGS is handled in /usr/src/sys/conf/kern.pre.mk
 349
 350 .if !defined(NO_CPU_CFLAGS)
 351 CFLAGS += ${_CPUCFLAGS}
 352 .endif
 353
 354 #
 355 # Prohibit the compiler from emitting SIMD instructions.
 356 # These flags are added to CFLAGS in areas where the extra context-switch
 357 # cost outweighs the advantages of SIMD instructions.
 358 #
 359 # gcc:
 360 # Setting -mno-mmx implies -mno-3dnow
 361 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3 and -mfpmath=387
 362 #
 363 # clang:
 364 # Setting -mno-mmx implies -mno-3dnow and -mno-3dnowa
 365 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3, -mno-sse41 and
 366 # -mno-sse42
 367 # (-mfpmath= is not supported)
 368 #
 369 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
 370 CFLAGS_NO_SIMD.clang= -mno-avx -mno-avx2
 371 CFLAGS_NO_SIMD= -mno-mmx -mno-sse
 372 .endif
 373 CFLAGS_NO_SIMD += ${CFLAGS_NO_SIMD.${COMPILER_TYPE}}
 374
 375 # Add in any architecture-specific CFLAGS.
 376 # These come from make.conf or the command line or the environment.
 377 CFLAGS += ${CFLAGS.${MACHINE_ARCH}}
 378 CXXFLAGS += ${CXXFLAGS.${MACHINE_ARCH}}
 379
 380 #
 381 # MACHINE_ABI is a list of properties about the ABI used for MACHINE_ARCH.
 382 # The following properties are indicated with one of the follow values:
 383 #
 384 # Byte order:                   big-endian, little-endian
 385 # Floating point ABI:           soft-float, hard-float
 386 # Size of long (size_t, etc):   long32, long64
 387 # Pointer type:                 ptr32, ptr64
 388 # Size of time_t:               time32, time64
 389 #
 390 .if (${MACHINE} == "arm" && (defined(CPUTYPE) && ${CPUTYPE:M*soft*})) || \
 391     (${MACHINE_ARCH} == "powerpc" && (defined(CPUTYPE) && ${CPUTYPE} == "e500"))
 392 MACHINE_ABI+=   soft-float
 393 .else
 394 MACHINE_ABI+=   hard-float
 395 .endif
 396 # Currently all 64-bit architectures include 64 in their name (see arch(7)).
 397 .if ${MACHINE_ARCH:M*64*}
 398 MACHINE_ABI+=  long64
 399 .else
 400 MACHINE_ABI+=  long32
 401 .endif
 402 .if ${MACHINE_ABI:Mlong64}
 403 MACHINE_ABI+=  ptr64
 404 .else
 405 MACHINE_ABI+=  ptr32
 406 .endif
 407 .if ${MACHINE_ARCH} == "i386"
 408 MACHINE_ABI+=  time32
 409 .else
 410 MACHINE_ABI+=  time64
 411 .endif
 412 .if ${MACHINE_ARCH:Mpowerpc*} && !${MACHINE_ARCH:M*le}
 413 MACHINE_ABI+=   big-endian
 414 .else
 415 MACHINE_ABI+=   little-endian
 416 .endif