diff options
Diffstat (limited to 'm4/ax_ext.m4')
| -rw-r--r-- | m4/ax_ext.m4 | 102 |
1 files changed, 73 insertions, 29 deletions
diff --git a/m4/ax_ext.m4 b/m4/ax_ext.m4 index 1ee3b94..0cc2096 100644 --- a/m4/ax_ext.m4 +++ b/m4/ax_ext.m4 @@ -57,68 +57,119 @@ AC_DEFUN([AX_EXT], fi ;; - i[[3456]]86*|x86_64*|amd64*) - AC_REQUIRE([AX_GCC_X86_CPUID]) - AC_REQUIRE([AX_GCC_X86_AVX_XGETBV]) + AC_REQUIRE([AC_PROG_CC]) + AC_LANG_PUSH([C]) + + # Note for the next 3 macros: m4 does not like '$' and '>', so + # we have to use the ascii values, 36 and 62, resp. to print the + # characters out to the temporary shell script used to detect + # CPUID settings + + AC_CACHE_VAL([ax_cv_feature_ecx], [ + AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [ + int eax, ebx, ecx, edx; + FILE *f; + __asm__("cpuid" + : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) + : "a" (0x00000001)); + f = fopen("ax_cv_feature_ecx", "w"); + fprintf(f, "if (( (0x%x %c%c %c0) & 0x1 )); then echo 1; else echo 0; fi\n", ecx, 62, 62, 36); + fclose(f); + return 0; + ])], + #[ax_cv_feature_ecx=`cat ax_cv_feature_ecx`; rm -f ax_cv_feature_ecx], + [ax_cv_feature_ecx=`cat ax_cv_feature_ecx`], + [ax_cv_feature_ecx='echo 0'; rm -f ax_cv_feature_ecx], + [ax_cv_feature_ecx='echo 0'])]) + + AC_CACHE_VAL([ax_cv_feature_edx], [ + AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [ + int eax, ebx, ecx, edx; + FILE *f; + __asm__("cpuid" + : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) + : "a" (0x00000001)); + f = fopen("ax_cv_feature_edx", "w"); + fprintf(f, "if (( (0x%x %c%c %c0) & 0x1 )); then echo 1; else echo 0; fi\n", edx, 62, 62, 36); + fclose(f); + return 0; + ])], + [ax_cv_feature_edx=`cat ax_cv_feature_edx`; rm -f ax_cv_feature_edx], + [ax_cv_feature_edx='echo 0'; rm -f ax_cv_feature_edx], + [ax_cv_feature_edx='echo 0'])]) + + AC_CACHE_VAL([ax_cv_vendor_ecx], [ + AC_RUN_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>], [ + int eax, ebx, ecx, edx; + FILE *f; + __asm__("cpuid" + : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) + : "a" (0x00000000)); + f = fopen("ax_cv_vendor_ecx", "w"); + fprintf(f, "if (( (0x%x %c%c %c0) & 0x1)); then echo 1; else echo 0; fi\n", ecx, 62, 62, 36); + fclose(f); + return 0; + ])], + [ax_cv_vendor_ecx=`cat ax_cv_vendor_ecx`; rm -f ax_cv_vendor_ecx], + [ax_cv_vendor_ecx='echo 0'; rm -f ax_cv_vendor_ecx], + [ax_cv_vendor_ecx='echo 0'])]) - AX_GCC_X86_CPUID(0x00000001) - ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3` - edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4` + AC_LANG_POP([C]) AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext], [ ax_cv_have_mmx_ext=no - if test "$((0x$edx>>23&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_edx\" 23` ]]" = "1"; then ax_cv_have_mmx_ext=yes fi ]) - + AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext], [ ax_cv_have_sse_ext=no - if test "$((0x$edx>>25&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_edx\" 25` ]]" = "1"; then ax_cv_have_sse_ext=yes fi ]) - + AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext], [ ax_cv_have_sse2_ext=no - if test "$((0x$edx>>26&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_edx\" 26` ]]" = "1"; then ax_cv_have_sse2_ext=yes fi ]) - + AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext], [ ax_cv_have_sse3_ext=no - if test "$((0x$ecx&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 0` ]]" = "1"; then ax_cv_have_sse3_ext=yes fi ]) - + AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext], [ ax_cv_have_ssse3_ext=no - if test "$((0x$ecx>>9&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 9` ]]" = "1"; then ax_cv_have_ssse3_ext=yes fi ]) - + AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext], [ ax_cv_have_sse41_ext=no - if test "$((0x$ecx>>19&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 19` ]]" = "1"; then ax_cv_have_sse41_ext=yes fi ]) - + AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext], [ ax_cv_have_sse42_ext=no - if test "$((0x$ecx>>20&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 20` ]]" = "1"; then ax_cv_have_sse42_ext=yes fi ]) @@ -126,25 +177,18 @@ AC_DEFUN([AX_EXT], AC_CACHE_CHECK([whether avx is supported by processor], [ax_cv_have_avx_cpu_ext], [ ax_cv_have_avx_cpu_ext=no - if test "$((0x$ecx>>28&0x01))" = 1; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 28` ]]" = "1"; then ax_cv_have_avx_cpu_ext=yes fi ]) if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then - AX_GCC_X86_AVX_XGETBV(0x00000000) - - xgetbv_eax="0" - if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then - xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1` - fi - AC_CACHE_CHECK([whether avx is supported by operating system], [ax_cv_have_avx_ext], [ ax_cv_have_avx_ext=no - if test "$((0x$ecx>>27&0x01))" = 1; then - if test "$((0x$xgetbv_eax&0x6))" = 6; then + if test "$[[ `sh -c \"$ax_cv_feature_ecx\" 27` ]]" = "1"; then + if test "$[[ `sh -c \"$ax_cv_vendor_ecx\" 6` ]]" = "1"; then ax_cv_have_avx_ext=yes fi fi |