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