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98 lines
2.7 KiB
98 lines
2.7 KiB
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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