From 97af5a2efbe30726ce4d7c921efed6afc32a314f Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
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Date: Sun, 25 Dec 2016 13:41:19 +0100
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Subject: [PATCH] NEON autodetection segfaults: assume neon present
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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If TUNE_FEATURES contain 'neon' we can assume our machine supports it
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Upstream-Status: Inappropriate [embedded specific]
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Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
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---
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simd-support/neon.c | 46 +---------------------------------------------
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1 file changed, 1 insertion(+), 45 deletions(-)
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diff --git a/simd-support/neon.c b/simd-support/neon.c
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index 86b2cb6..8d6537e 100644
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--- a/simd-support/neon.c
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+++ b/simd-support/neon.c
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@@ -23,54 +23,10 @@
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#if HAVE_NEON
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-/* check for an environment where signals are known to work */
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-#if defined(unix) || defined(linux)
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- # include <signal.h>
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- # include <setjmp.h>
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-
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- static jmp_buf jb;
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-
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- static void sighandler(int x)
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- {
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- UNUSED(x);
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- longjmp(jb, 1);
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- }
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-
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- static int really_have_neon(void)
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- {
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- void (*oldsig)(int);
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- oldsig = signal(SIGILL, sighandler);
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- if (setjmp(jb)) {
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- signal(SIGILL, oldsig);
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- return 0;
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- } else {
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- /* paranoia: encode the instruction in binary because the
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- assembler may not recognize it without -mfpu=neon */
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- /*asm volatile ("vand q0, q0, q0");*/
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- asm volatile (".long 0xf2000150");
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- signal(SIGILL, oldsig);
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- return 1;
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- }
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- }
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-
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- int X(have_simd_neon)(void)
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- {
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- static int init = 0, res;
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-
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- if (!init) {
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- res = really_have_neon();
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- init = 1;
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- }
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- return res;
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- }
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-
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-
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-#else
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-/* don't know how to autodetect NEON; assume it is present */
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+/* autodetect NEON broken; assume it is present */
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int X(have_simd_neon)(void)
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{
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return 1;
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}
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-#endif
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#endif
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--
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2.5.5
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