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--- babl/babl-cpuaccel.c.orig 2022-06-28 12:20:06 UTC
+++ babl/babl-cpuaccel.c
@@ -556,33 +556,19 @@ arch_accel (void)
#include <fcntl.h>
#include <string.h>
#include <elf.h>
+#include <sys/auxv.h>
#define HAVE_ACCEL 1
static guint32
arch_accel (void)
{
- /* TODO : add or hardcode the other ways it can be on arm, where
- * this info comes from the system and not from running cpu
- * instructions
- */
- int has_neon = 0;
- int fd = open ("/proc/self/auxv", O_RDONLY);
- Elf32_auxv_t auxv;
- if (fd >= 0)
- {
- while (read (fd, &auxv, sizeof (Elf32_auxv_t)) == sizeof (Elf32_auxv_t))
- {
- if (auxv.a_type == AT_HWCAP)
- {
- if (auxv.a_un.a_val & 4096)
- has_neon = 1;
- }
- }
- close (fd);
- }
- return has_neon?BABL_CPU_ACCEL_ARM_NEON:0;
-}
+ unsigned long hwcap = 0;
+
+ elf_aux_info(AT_HWCAP, &hwcap, sizeof hwcap);
+
+ return hwcap & HWCAP_NEON ? BABL_CPU_ACCEL_ARM_NEON : 0;
+}
#endif /* ARCH_ARM */
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