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