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89 lines
4.1 KiB
89 lines
4.1 KiB
8 years ago
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From https://github.com/FFTW/fftw3/issues/73
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diff --git a/configure.ac b/configure.ac
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index 83a295f..51d290a 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -212,11 +212,21 @@ if test "$have_neon" = "yes"; then
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fi
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AM_CONDITIONAL(HAVE_NEON, test "$have_neon" = "yes")
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-AC_ARG_ENABLE(armv8cyclecounter, [AC_HELP_STRING([--enable-armv8cyclecounter],[enable the cycle counter on ARMv8 ; require enabling in kernel mode, see <https://github.com/rdolbeau/enable_arm_pmu>])], have_armv8cyclecounter=$enableval)
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+AC_ARG_ENABLE(armv8cyclecounter, [AC_HELP_STRING([--enable-armv8cyclecounter],[enable the cycle counter on ARMv8 via the PMCCNTR_EL0 register. Requires enabling in kernel mode, see <https://github.com/rdolbeau/enable_arm_pmu>])], have_armv8cyclecounter=$enableval)
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if test "$have_armv8cyclecounter"x = "yes"x; then
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AC_DEFINE(HAVE_ARMV8CC,1,[Define if you have enabled the cycle counter on ARMv8])
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fi
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+AC_ARG_ENABLE(armv8-cntvct-el0, [AC_HELP_STRING([--enable-armv8-cntvct-el0],[enable the cycle counter on ARMv8 via the CNTVCT_EL0 register])], have_armv8cntvctel0=$enableval)
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+if test "$have_armv8cntvctel0"x = "yes"x; then
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+ AC_DEFINE(HAVE_ARMV8_CNTVCT_EL0,1,[Define if you have enabled the CNTVCT_EL0 cycle counter on ARMv8])
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+fi
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+
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+AC_ARG_ENABLE(armv7a-cntvct, [AC_HELP_STRING([--enable-armv7a-cntvct],[enable the cycle counter on Armv7a via the CNTVCT register])], have_armv7acntvct=$enableval)
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+if test "$have_armv7acntvct"x = "yes"x; then
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+ AC_DEFINE(HAVE_ARMV7A_CNTVCT,1,[Define if you have enabled the CNTVCT cycle counter on ARMv7a])
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+fi
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+
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AC_ARG_ENABLE(generic-simd128, [AC_HELP_STRING([--enable-generic-simd128],[enable generic (gcc) 128-bit SIMD optimizations])], have_generic_simd128=$enableval, have_generic_simd128=no)
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if test "$have_generic_simd128" = "yes"; then
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AC_DEFINE(HAVE_GENERIC_SIMD128,1,[Define to enable generic (gcc) 128-bit SIMD optimizations.])
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@@ -719,36 +729,6 @@ AM_CONDITIONAL(OPENMP, test "$enable_openmp" = "yes")
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AM_CONDITIONAL(SMP, test "$enable_threads" = "yes" -o "$enable_openmp" = "yes")
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AM_CONDITIONAL(COMBINED_THREADS, test x"$with_combined_threads" = xyes)
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-
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-dnl -----------------------------------------------------------------------
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-dnl Check for not-always-available (not quite) cycle counters
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-case "${host_cpu}" in
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- armv7*)
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- AC_MSG_CHECKING([armv7a has 64 bits readable CNTVCT])
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- AC_RUN_IFELSE(
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- [AC_LANG_PROGRAM([[#include <stdint.h>]],
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- [[uint32_t Rt, Rt2 = 0;asm volatile("mrrc p15, 1, %0, %1, c14" : "=r"(Rt), "=r"(Rt2));]]
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- )],
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- [AC_DEFINE(ARMV7A_HAS_CNTCVT,1,[Define if CNTVCT is 64 bits readable on armv7a ])
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- AC_MSG_RESULT([yes])],
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- [AC_MSG_RESULT([no])]
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- )
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- ;;
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- aarch64)
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- AC_MSG_CHECKING([armv8 has 64 bits readable CNTVCT_EL0])
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- AC_RUN_IFELSE(
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- [AC_LANG_PROGRAM([[#include <stdint.h>]],
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- [[uint64_t Rt;asm volatile("mrs %0, CNTVCT_EL0" : "=r" (Rt));]]
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- )],
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- [AC_DEFINE(ARMV8_HAS_CNTCVT_EL0,1,[Define if CNTVCT_EL0 is 64 bits readable on armv8 ])
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- AC_MSG_RESULT([yes])],
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- [AC_MSG_RESULT([no])]
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- )
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- ;;
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- *)
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- ;;
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-esac
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-
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dnl -----------------------------------------------------------------------
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AC_MSG_CHECKING([whether a cycle counter is available])
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diff --git a/kernel/cycle.h b/kernel/cycle.h
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index 873e92e..781792c 100644
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--- a/kernel/cycle.h
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+++ b/kernel/cycle.h
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@@ -515,7 +515,7 @@ INLINE_ELAPSED(inline)
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#endif
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#endif /* HAVE_MIPS_ZBUS_TIMER */
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-#if defined(__ARM_ARCH_7A__) && defined(ARMV7A_HAS_CNTCVT)
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+#if defined(__ARM_ARCH_7A__) && defined(ARMV7A_HAS_CNTVCT)
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typedef uint64_t ticks;
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static inline ticks getticks(void)
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{
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@@ -527,7 +527,7 @@ INLINE_ELAPSED(inline)
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#define HAVE_TICK_COUNTER
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#endif
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-#if defined(__aarch64__) && defined(ARMV8_HAS_CNTCVT_EL0) && !defined(HAVE_ARMV8CC)
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+#if defined(__aarch64__) && defined(HAVE_ARMV8_CNTVCT_EL0) && !defined(HAVE_ARMV8CC)
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typedef uint64_t ticks;
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static inline ticks getticks(void)
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{
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