gecko-dev/build/autoconf/arch.m4
Brad Lassey b66de766f1 bug 802616 - don't use software floating point math on ARMv6 r=glandium
--HG--
rename : dom/bindings/ExampleGen.py => dom/bindings/BindingGen.py
extra : rebase_source : 4171bc4cccbd6cc82d50a1d2544e362bd615fdf9
2012-10-17 11:40:55 -04:00

231 lines
6.0 KiB
Plaintext

dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
AC_DEFUN([MOZ_ARCH_OPTS],
[
dnl ========================================================
dnl = ARM toolchain tweaks
dnl ========================================================
MOZ_THUMB=toolchain-default
MOZ_THUMB_INTERWORK=toolchain-default
MOZ_FPU=toolchain-default
MOZ_FLOAT_ABI=toolchain-default
MOZ_SOFT_FLOAT=toolchain-default
MOZ_ARG_WITH_STRING(arch,
[ --with-arch=[[type|toolchain-default]]
Use specific CPU features (-march=type). Resets
thumb, fpu, float-abi, etc. defaults when set],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-arch is not supported on non-GNU toolchains])
fi
MOZ_ARCH=$withval)
if test -z "$MOZ_ARCH"; then
dnl Defaults
case "${CPU_ARCH}-${OS_TARGET}" in
arm-Android)
MOZ_THUMB=yes
MOZ_ARCH=armv7-a
MOZ_FPU=vfp
MOZ_FLOAT_ABI=softfp
;;
arm-Darwin)
MOZ_ARCH=toolchain-default
MOZ_THUMB=yes
;;
arm-*)
if test -n "$MOZ_PLATFORM_MAEMO"; then
MOZ_THUMB=no
MOZ_ARCH=armv7-a
MOZ_FLOAT_ABI=softfp
fi
if test "$MOZ_PLATFORM_MAEMO" = 6; then
MOZ_THUMB=yes
fi
;;
esac
fi
if test "$MOZ_ARCH" = "armv6" -a "$OS_TARGET" = "Android"; then
MOZ_FPU=vfp
fi
MOZ_ARG_WITH_STRING(thumb,
[ --with-thumb[[=yes|no|toolchain-default]]]
[ Use Thumb instruction set (-mthumb)],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-thumb is not supported on non-GNU toolchains])
fi
MOZ_THUMB=$withval)
MOZ_ARG_WITH_STRING(thumb-interwork,
[ --with-thumb-interwork[[=yes|no|toolchain-default]]
Use Thumb/ARM instuctions interwork (-mthumb-interwork)],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-thumb-interwork is not supported on non-GNU toolchains])
fi
MOZ_THUMB_INTERWORK=$withval)
MOZ_ARG_WITH_STRING(fpu,
[ --with-fpu=[[type|toolchain-default]]
Use specific FPU type (-mfpu=type)],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-fpu is not supported on non-GNU toolchains])
fi
MOZ_FPU=$withval)
MOZ_ARG_WITH_STRING(float-abi,
[ --with-float-abi=[[type|toolchain-default]]
Use specific arm float ABI (-mfloat-abi=type)],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-float-abi is not supported on non-GNU toolchains])
fi
MOZ_FLOAT_ABI=$withval)
MOZ_ARG_WITH_STRING(soft-float,
[ --with-soft-float[[=yes|no|toolchain-default]]
Use soft float library (-msoft-float)],
if test -z "$GNU_CC"; then
AC_MSG_ERROR([--with-soft-float is not supported on non-GNU toolchains])
fi
MOZ_SOFT_FLOAT=$withval)
case "$MOZ_ARCH" in
toolchain-default|"")
arch_flag=""
;;
*)
arch_flag="-march=$MOZ_ARCH"
;;
esac
case "$MOZ_THUMB" in
yes)
MOZ_THUMB2=1
thumb_flag="-mthumb"
;;
no)
MOZ_THUMB2=
thumb_flag="-marm"
;;
*)
_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$arch_flag"
AC_TRY_COMPILE([],[return sizeof(__thumb2__);],
MOZ_THUMB2=1,
MOZ_THUMB2=)
CFLAGS="$_SAVE_CFLAGS"
thumb_flag=""
;;
esac
if test "$MOZ_THUMB2" = 1; then
AC_DEFINE(MOZ_THUMB2)
fi
case "$MOZ_THUMB_INTERWORK" in
yes)
thumb_interwork_flag="-mthumb-interwork"
;;
no)
thumb_interwork_flag="-mno-thumb-interwork"
;;
*) # toolchain-default
thumb_interwork_flag=""
;;
esac
case "$MOZ_FPU" in
toolchain-default|"")
fpu_flag=""
;;
*)
fpu_flag="-mfpu=$MOZ_FPU"
;;
esac
case "$MOZ_FLOAT_ABI" in
toolchain-default|"")
float_abi_flag=""
;;
*)
float_abi_flag="-mfloat-abi=$MOZ_FLOAT_ABI"
;;
esac
case "$MOZ_SOFT_FLOAT" in
yes)
soft_float_flag="-msoft-float"
;;
no)
soft_float_flag="-mno-soft-float"
;;
*) # toolchain-default
soft_float_flag=""
;;
esac
dnl Use echo to avoid accumulating space characters
all_flags=`echo $arch_flag $thumb_flag $thumb_interwork_flag $fpu_flag $float_abi_flag $soft_float_flag`
if test -n "$all_flags"; then
_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$all_flags"
AC_MSG_CHECKING(whether the chosen combination of compiler flags ($all_flags) works)
AC_TRY_COMPILE([],[return 0;],
AC_MSG_RESULT([yes]),
AC_MSG_ERROR([no]))
CFLAGS="$_SAVE_CFLAGS $all_flags"
CXXFLAGS="$CXXFLAGS $all_flags"
ASFLAGS="$ASFLAGS $all_flags"
if test -n "$thumb_flag"; then
LDFLAGS="$LDFLAGS $thumb_flag"
fi
fi
AC_SUBST(MOZ_THUMB2)
if test "$CPU_ARCH" = "arm"; then
AC_MSG_CHECKING(for ARM SIMD support in compiler)
# We try to link so that this also fails when
# building with LTO.
AC_TRY_LINK([],
[asm("uqadd8 r1, r1, r2");],
result="yes", result="no")
AC_MSG_RESULT("$result")
if test "$result" = "yes"; then
AC_DEFINE(HAVE_ARM_SIMD)
HAVE_ARM_SIMD=1
fi
AC_MSG_CHECKING(for ARM NEON support in compiler)
# We try to link so that this also fails when
# building with LTO.
AC_TRY_LINK([],
[asm(".fpu neon\n vadd.i8 d0, d0, d0");],
result="yes", result="no")
AC_MSG_RESULT("$result")
if test "$result" = "yes"; then
AC_DEFINE(HAVE_ARM_NEON)
HAVE_ARM_NEON=1
fi
fi # CPU_ARCH = arm
AC_SUBST(HAVE_ARM_SIMD)
AC_SUBST(HAVE_ARM_NEON)
if test -n "$MOZ_ARCH"; then
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-arch=$MOZ_ARCH"
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb=$MOZ_THUMB"
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-thumb-interwork=$MOZ_THUMB_INTERWORK"
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-fpu=$MOZ_FPU"
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-float-abi=$MOZ_FLOAT_ABI"
NSPR_CONFIGURE_ARGS="$NSPR_CONFIGURE_ARGS --with-soft-float=$MOZ_SOFT_FLOAT"
fi
])