diff options
| -rw-r--r-- | configure.ac | 33 | ||||
| -rw-r--r-- | src/pulsecore/svolume_arm.c | 8 |
2 files changed, 36 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index f93d4616..0f6ff815 100644 --- a/configure.ac +++ b/configure.ac @@ -227,7 +227,7 @@ else [pulseaudio_cv_support_arm_atomic_ops=no]) ]) AS_IF([test "$pulseaudio_cv_support_arm_atomic_ops" = "yes"], [ - AC_DEFINE([ATOMIC_ARM_INLINE_ASM], 1, [Have ARMv6 instructions.]) + AC_DEFINE([ATOMIC_ARM_INLINE_ASM], 1, [Have ARM atomic instructions.]) need_libatomic_ops=no ]) fi @@ -246,6 +246,37 @@ else esac fi +# If we're on ARM, check for the ARMV6 instructions we need */ +case $host in + arm*) + AC_CACHE_CHECK([support for required armv6 instructions], + pulseaudio_cv_support_armv6, + [AC_COMPILE_IFELSE( + AC_LANG_PROGRAM([], + [[volatile int a = -60000, b = 0xaaaabbbb, c = 0xccccdddd; + asm volatile ("ldr r0, %2 \n" + "ldr r2, %3 \n" + "ldr r3, %4 \n" + "ssat r1, #8, r0 \n" + "str r1, %0 \n" + "pkhbt r1, r3, r2, LSL #8 \n" + "str r1, %1 \n" + : "=m" (a), "=m" (b) + : "m" (a), "m" (b), "m" (c) + : "r0", "r1", "r2", "r3", "cc"); + return (a == -128 && b == 0xaabbdddd) ? 0 : -1; + ]]), + [pulseaudio_cv_support_armv6=yes], + [pulseaudio_cv_support_armv6=no]) + ]) + AS_IF([test "$pulseaudio_cv_support_armv6" = "yes"], [ + AC_DEFINE([HAVE_ARMV6], 1, [Have ARMv6 instructions.]) + ]) + ;; + *) + ;; +esac + CC_CHECK_TLS AC_CACHE_CHECK([whether $CC knows _Bool], diff --git a/src/pulsecore/svolume_arm.c b/src/pulsecore/svolume_arm.c index fdd8f09a..3973e518 100644 --- a/src/pulsecore/svolume_arm.c +++ b/src/pulsecore/svolume_arm.c @@ -35,7 +35,7 @@ #include "sample-util.h" #include "endianmacros.h" -#if defined (__arm__) +#if defined (__arm__) && defined (HAVE_ARMV6) #define MOD_INC() \ " subs r0, r6, %2 \n\t" \ @@ -182,11 +182,11 @@ static void run_test (void) { } #endif -#endif /* defined (__arm__) */ +#endif /* defined (__arm__) && defined (HAVE_ARMV6) */ void pa_volume_func_init_arm (pa_cpu_arm_flag_t flags) { -#if defined (__arm__) +#if defined (__arm__) && defined (HAVE_ARMV6) pa_log_info("Initialising ARM optimized functions."); #ifdef RUN_TEST @@ -194,5 +194,5 @@ void pa_volume_func_init_arm (pa_cpu_arm_flag_t flags) { #endif pa_set_volume_func (PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_arm); -#endif /* defined (__arm__) */ +#endif /* defined (__arm__) && defined (HAVE_ARMV6) */ } |