98 lines
2.7 KiB
Text
98 lines
2.7 KiB
Text
dnl as-gcc-inline-assembly.m4 0.1.0
|
|
|
|
dnl autostars m4 macro for detection of gcc inline assembly
|
|
|
|
dnl David Schleef <ds@schleef.org>
|
|
|
|
dnl AS_COMPILER_FLAG(ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
|
|
dnl Tries to compile with the given CFLAGS.
|
|
dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
|
|
dnl and ACTION-IF-NOT-ACCEPTED otherwise.
|
|
|
|
AC_DEFUN([AS_GCC_INLINE_ASSEMBLY],
|
|
[
|
|
AC_MSG_CHECKING([if compiler supports gcc-style inline assembly])
|
|
|
|
AC_TRY_COMPILE([], [
|
|
#ifdef __GNUC_MINOR__
|
|
#if (__GNUC__ * 1000 + __GNUC_MINOR__) < 3004
|
|
#error GCC before 3.4 has critical bugs compiling inline assembly
|
|
#endif
|
|
#endif
|
|
__asm__ (""::) ], [flag_ok=yes], [flag_ok=no])
|
|
|
|
if test "X$flag_ok" = Xyes ; then
|
|
$1
|
|
true
|
|
else
|
|
$2
|
|
true
|
|
fi
|
|
AC_MSG_RESULT([$flag_ok])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_NEON],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("vorr d0,d0,d0")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_NEON_FORCE],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports NEON instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv7-a\n.fpu neon\n.object_arch armv4t\nvorr d0,d0,d0")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_MEDIA],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("shadd8 r3,r3,r3")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_MEDIA_FORCE],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports ARMv6 media instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv6\n.object_arch armv4t\nshadd8 r3,r3,r3")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_EDSP],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__("qadd r3,r3,r3")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|
|
|
|
AC_DEFUN([AS_ASM_ARM_EDSP_FORCE],
|
|
[
|
|
AC_MSG_CHECKING([if assembler supports EDSP instructions on ARM])
|
|
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[__asm__(".arch armv5te\n.object_arch armv4t\nqadd r3,r3,r3")])],
|
|
[AC_MSG_RESULT([yes])
|
|
$1],
|
|
[AC_MSG_RESULT([no])
|
|
$2])
|
|
])
|