319 # One optimization the compiler might perform is to turn this:
 320 #       #pragma weak foo
 321 #       extern int foo;
 322 #       if (&foo)
 323 #               foo = 5;
 324 # into
 325 #       foo = 5;
 326 # Since we do some of this (foo might be referenced in common kernel code
 327 # but provided only for some cpu modules or platforms), we disable this
 328 # optimization.
 329 #
 330 sparc_CCUNBOUND = -Wd,-xsafe=unboundsym
 331 i386_CCUNBOUND  =
 332 CCUNBOUND       = $($(MACH)_CCUNBOUND)
 333 
 334 #
 335 # compiler '-xarch' flag. This is here to centralize it and make it
 336 # overridable for testing.
 337 sparc_XARCH=    -m32
 338 sparcv9_XARCH=  -m64
 339 i386_XARCH=
 340 amd64_XARCH=    -m64 -Ui386 -U__i386
 341 
 342 # assembler '-xarch' flag.  Different from compiler '-xarch' flag.
 343 sparc_AS_XARCH=         -xarch=v8plus
 344 sparcv9_AS_XARCH=       -xarch=v9
 345 i386_AS_XARCH=
 346 amd64_AS_XARCH=         -xarch=amd64 -P -Ui386 -U__i386
 347 
 348 #
 349 # These flags define what we need to be 'standalone' i.e. -not- part
 350 # of the rather more cosy userland environment.  This basically means
 351 # the kernel.
 352 #
 353 # XX64  future versions of gcc will make -mcmodel=kernel imply -mno-red-zone
 354 #
 355 sparc_STAND_FLAGS=      -_gcc=-ffreestanding
 356 sparcv9_STAND_FLAGS=    -_gcc=-ffreestanding
 357 # Disabling MMX also disables 3DNow, disabling SSE also disables all later
 358 # additions to SSE (SSE2, AVX ,etc.)
 359 NO_SIMD=                -_gcc=-mno-mmx -_gcc=-mno-sse

 319 # One optimization the compiler might perform is to turn this:
 320 #       #pragma weak foo
 321 #       extern int foo;
 322 #       if (&foo)
 323 #               foo = 5;
 324 # into
 325 #       foo = 5;
 326 # Since we do some of this (foo might be referenced in common kernel code
 327 # but provided only for some cpu modules or platforms), we disable this
 328 # optimization.
 329 #
 330 sparc_CCUNBOUND = -Wd,-xsafe=unboundsym
 331 i386_CCUNBOUND  =
 332 CCUNBOUND       = $($(MACH)_CCUNBOUND)
 333 
 334 #
 335 # compiler '-xarch' flag. This is here to centralize it and make it
 336 # overridable for testing.
 337 sparc_XARCH=    -m32
 338 sparcv9_XARCH=  -m64
 339 i386_XARCH=     -m32
 340 amd64_XARCH=    -m64 -Ui386 -U__i386
 341 
 342 # assembler '-xarch' flag.  Different from compiler '-xarch' flag.
 343 sparc_AS_XARCH=         -xarch=v8plus
 344 sparcv9_AS_XARCH=       -xarch=v9
 345 i386_AS_XARCH=
 346 amd64_AS_XARCH=         -xarch=amd64 -P -Ui386 -U__i386
 347 
 348 #
 349 # These flags define what we need to be 'standalone' i.e. -not- part
 350 # of the rather more cosy userland environment.  This basically means
 351 # the kernel.
 352 #
 353 # XX64  future versions of gcc will make -mcmodel=kernel imply -mno-red-zone
 354 #
 355 sparc_STAND_FLAGS=      -_gcc=-ffreestanding
 356 sparcv9_STAND_FLAGS=    -_gcc=-ffreestanding
 357 # Disabling MMX also disables 3DNow, disabling SSE also disables all later
 358 # additions to SSE (SSE2, AVX ,etc.)
 359 NO_SIMD=                -_gcc=-mno-mmx -_gcc=-mno-sse