From cae9cafb9c536fd5ea40d1457c0ee1fcd6a6aa43 Mon Sep 17 00:00:00 2001 From: Andreas Müller Date: Mon, 26 Dec 2016 00:07:39 +0100 Subject: fftw: work around segfault when checking for presence of ARM NEON MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * Mixxx segfaulted during start. Remote debugging lead to function 'really_have_neon()'. * qtractor segfaulted when adding instruments as whysynth or hexter * seems autodetection fails in some other environments too [1]. * if TUNE_FEATURES contain 'neon' we can assume our machine supports NEON so we don't need runtime detection [1] https://github.com/FFTW/fftw3/issues/30 Signed-off-by: Andreas Müller Signed-off-by: Martin Jansa --- ...todetection-segfaults-assume-neon-present.patch | 80 ++++++++++++++++++++++ meta-oe/recipes-support/fftw/fftw_3.3.5.bb | 5 +- 2 files changed, 84 insertions(+), 1 deletion(-) create mode 100644 meta-oe/recipes-support/fftw/fftw/0001-NEON-autodetection-segfaults-assume-neon-present.patch (limited to 'meta-oe/recipes-support') diff --git a/meta-oe/recipes-support/fftw/fftw/0001-NEON-autodetection-segfaults-assume-neon-present.patch b/meta-oe/recipes-support/fftw/fftw/0001-NEON-autodetection-segfaults-assume-neon-present.patch new file mode 100644 index 000000000..6340f42f4 --- /dev/null +++ b/meta-oe/recipes-support/fftw/fftw/0001-NEON-autodetection-segfaults-assume-neon-present.patch @@ -0,0 +1,80 @@ +From 97af5a2efbe30726ce4d7c921efed6afc32a314f Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Andreas=20M=C3=BCller?= +Date: Sun, 25 Dec 2016 13:41:19 +0100 +Subject: [PATCH] NEON autodetection segfaults: assume neon present +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If TUNE_FEATURES contain 'neon' we can assume our machine supports it + +Upstream-Status: Inappropriate [embedded specific] + +Signed-off-by: Andreas Müller +--- + simd-support/neon.c | 46 +--------------------------------------------- + 1 file changed, 1 insertion(+), 45 deletions(-) + +diff --git a/simd-support/neon.c b/simd-support/neon.c +index 86b2cb6..8d6537e 100644 +--- a/simd-support/neon.c ++++ b/simd-support/neon.c +@@ -23,54 +23,10 @@ + + #if HAVE_NEON + +-/* check for an environment where signals are known to work */ +-#if defined(unix) || defined(linux) +- # include +- # include +- +- static jmp_buf jb; +- +- static void sighandler(int x) +- { +- UNUSED(x); +- longjmp(jb, 1); +- } +- +- static int really_have_neon(void) +- { +- void (*oldsig)(int); +- oldsig = signal(SIGILL, sighandler); +- if (setjmp(jb)) { +- signal(SIGILL, oldsig); +- return 0; +- } else { +- /* paranoia: encode the instruction in binary because the +- assembler may not recognize it without -mfpu=neon */ +- /*asm volatile ("vand q0, q0, q0");*/ +- asm volatile (".long 0xf2000150"); +- signal(SIGILL, oldsig); +- return 1; +- } +- } +- +- int X(have_simd_neon)(void) +- { +- static int init = 0, res; +- +- if (!init) { +- res = really_have_neon(); +- init = 1; +- } +- return res; +- } +- +- +-#else +-/* don't know how to autodetect NEON; assume it is present */ ++/* autodetect NEON broken; assume it is present */ + int X(have_simd_neon)(void) + { + return 1; + } +-#endif + + #endif +-- +2.5.5 + diff --git a/meta-oe/recipes-support/fftw/fftw_3.3.5.bb b/meta-oe/recipes-support/fftw/fftw_3.3.5.bb index 7bce6f4e5..71adb8905 100644 --- a/meta-oe/recipes-support/fftw/fftw_3.3.5.bb +++ b/meta-oe/recipes-support/fftw/fftw_3.3.5.bb @@ -3,7 +3,10 @@ SECTION = "libs" LICENSE = "GPLv2" LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552" -SRC_URI = "http://www.fftw.org/fftw-${PV}.tar.gz" +SRC_URI = " \ + http://www.fftw.org/fftw-${PV}.tar.gz \ + file://0001-NEON-autodetection-segfaults-assume-neon-present.patch \ +" SRC_URI[md5sum] = "6cc08a3b9c7ee06fdd5b9eb02e06f569" SRC_URI[sha256sum] = "8ecfe1b04732ec3f5b7d279fdb8efcad536d555f9d1e8fabd027037d45ea8bcf" -- cgit v1.2.3-54-g00ecf