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authorMichael Niedermayer <michaelni@gmx.at>2014-01-15 15:49:06 +0100
committerMichael Niedermayer <michaelni@gmx.at>2014-01-15 15:49:22 +0100
commit949adce1251613425ce597772243dcfbfa51e61a (patch)
tree238b29eec74b4fa74af1d8e932cf207734b615d8 /libavutil/aarch64
parent92d07ea4b5928276679292b874f02fbff92f612a (diff)
parentfe96769bed828cf54c0d9dc5d55b74948a68946d (diff)
downloadffmpeg-949adce1251613425ce597772243dcfbfa51e61a.tar.gz
Merge remote-tracking branch 'qatar/master'
* qatar/master: aarch64: port neon clobber test from arm Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/aarch64')
-rw-r--r--libavutil/aarch64/neontest.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/libavutil/aarch64/neontest.h b/libavutil/aarch64/neontest.h
new file mode 100644
index 0000000000..b9d4986072
--- /dev/null
+++ b/libavutil/aarch64/neontest.h
@@ -0,0 +1,65 @@
+/*
+ * check NEON registers for clobbering
+ * Copyright (c) 2008 Ramiro Polla <ramiro.polla@gmail.com>
+ * Copyright (c) 2013 Martin Storsjo
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include "libavutil/bswap.h"
+
+#define storeneonregs(mem) \
+ __asm__ volatile( \
+ "stp d8, d9, [%0]\n\t" \
+ "stp d10, d11, [%0, #16]\n\t" \
+ "stp d12, d13, [%0, #32]\n\t" \
+ "stp d14, d15, [%0, #48]\n\t" \
+ :: "r"(mem) : "memory")
+
+#define testneonclobbers(func, ctx, ...) \
+ uint64_t neon[2][8]; \
+ int ret; \
+ storeneonregs(neon[0]); \
+ ret = __real_ ## func(ctx, __VA_ARGS__); \
+ storeneonregs(neon[1]); \
+ if (memcmp(neon[0], neon[1], sizeof(neon[0]))) { \
+ int i; \
+ av_log(ctx, AV_LOG_ERROR, \
+ "NEON REGS CLOBBERED IN %s!\n", #func); \
+ for (i = 0; i < 8; i ++) \
+ if (neon[0][i] != neon[1][i]) { \
+ av_log(ctx, AV_LOG_ERROR, \
+ "d%-2d = %016"PRIx64"\n", \
+ 8 + i, av_bswap64(neon[0][i])); \
+ av_log(ctx, AV_LOG_ERROR, \
+ " -> %016"PRIx64"\n", \
+ av_bswap64(neon[1][i])); \
+ } \
+ abort(); \
+ } \
+ return ret
+
+#define wrap(func) \
+int __real_ ## func; \
+int __wrap_ ## func; \
+int __wrap_ ## func