[FFmpeg-cvslog] aarch64: port neon clobber test from arm
Janne Grunau
git at videolan.org
Wed Jan 15 15:54:14 CET 2014
ffmpeg | branch: master | Janne Grunau <janne-libav at jannau.net> | Sat Jan 11 17:21:19 2014 +0100| [fe96769bed828cf54c0d9dc5d55b74948a68946d] | committer: Janne Grunau
aarch64: port neon clobber test from arm
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fe96769bed828cf54c0d9dc5d55b74948a68946d
---
libavcodec/aarch64/Makefile | 1 +
libavcodec/aarch64/neontest.c | 79 ++++++++++++++++++++++++++++++++++++++
libavresample/aarch64/Makefile | 1 +
libavresample/aarch64/neontest.c | 31 +++++++++++++++
libavutil/aarch64/neontest.h | 65 +++++++++++++++++++++++++++++++
5 files changed, 177 insertions(+)
diff --git a/libavcodec/aarch64/Makefile b/libavcodec/aarch64/Makefile
index 93a8d0c..af89f93 100644
--- a/libavcodec/aarch64/Makefile
+++ b/libavcodec/aarch64/Makefile
@@ -2,6 +2,7 @@ OBJS-$(CONFIG_H264CHROMA) += aarch64/h264chroma_init_aarch64.o
OBJS-$(CONFIG_H264DSP) += aarch64/h264dsp_init_aarch64.o
OBJS-$(CONFIG_H264QPEL) += aarch64/h264qpel_init_aarch64.o
OBJS-$(CONFIG_HPELDSP) += aarch64/hpeldsp_init_aarch64.o
+OBJS-$(CONFIG_NEON_CLOBBER_TEST) += aarch64/neontest.o
OBJS-$(CONFIG_RV40_DECODER) += aarch64/rv40dsp_init_aarch64.o
OBJS-$(CONFIG_VC1_DECODER) += aarch64/vc1dsp_init_aarch64.o
diff --git a/libavcodec/aarch64/neontest.c b/libavcodec/aarch64/neontest.c
new file mode 100644
index 0000000..0414829
--- /dev/null
+++ b/libavcodec/aarch64/neontest.c
@@ -0,0 +1,79 @@
+/*
+ * check NEON registers for clobbers
+ * Copyright (c) 2013 Martin Storsjo
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavcodec/avcodec.h"
+#include "libavutil/aarch64/neontest.h"
+
+wrap(avcodec_open2(AVCodecContext *avctx,
+ AVCodec *codec,
+ AVDictionary **options))
+{
+ testneonclobbers(avcodec_open2, avctx, codec, options);
+}
+
+wrap(avcodec_decode_audio4(AVCodecContext *avctx,
+ AVFrame *frame,
+ int *got_frame_ptr,
+ AVPacket *avpkt))
+{
+ testneonclobbers(avcodec_decode_audio4, avctx, frame,
+ got_frame_ptr, avpkt);
+}
+
+wrap(avcodec_decode_video2(AVCodecContext *avctx,
+ AVFrame *picture,
+ int *got_picture_ptr,
+ AVPacket *avpkt))
+{
+ testneonclobbers(avcodec_decode_video2, avctx, picture,
+ got_picture_ptr, avpkt);
+}
+
+wrap(avcodec_decode_subtitle2(AVCodecContext *avctx,
+ AVSubtitle *sub,
+ int *got_sub_ptr,
+ AVPacket *avpkt))
+{
+ testneonclobbers(avcodec_decode_subtitle2, avctx, sub,
+ got_sub_ptr, avpkt);
+}
+
+wrap(avcodec_encode_audio2(AVCodecContext *avctx,
+ AVPacket *avpkt,
+ const AVFrame *frame,
+ int *got_packet_ptr))
+{
+ testneonclobbers(avcodec_encode_audio2, avctx, avpkt, frame,
+ got_packet_ptr);
+}
+
+wrap(avcodec_encode_subtitle(AVCodecContext *avctx,
+ uint8_t *buf, int buf_size,
+ const AVSubtitle *sub))
+{
+ testneonclobbers(avcodec_encode_subtitle, avctx, buf, buf_size, sub);
+}
+
+wrap(avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt,
+ const AVFrame *frame, int *got_packet_ptr))
+{
+ testneonclobbers(avcodec_encode_video2, avctx, avpkt, frame, got_packet_ptr);
+}
diff --git a/libavresample/aarch64/Makefile b/libavresample/aarch64/Makefile
new file mode 100644
index 0000000..13ba193
--- /dev/null
+++ b/libavresample/aarch64/Makefile
@@ -0,0 +1 @@
+OBJS-$(CONFIG_NEON_CLOBBER_TEST) += aarch64/neontest.o
diff --git a/libavresample/aarch64/neontest.c b/libavresample/aarch64/neontest.c
new file mode 100644
index 0000000..20e563d
--- /dev/null
+++ b/libavresample/aarch64/neontest.c
@@ -0,0 +1,31 @@
+/*
+ * check NEON registers for clobbers
+ * Copyright (c) 2013 Martin Storsjo
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavresample/avresample.h"
+#include "libavutil/aarch64/neontest.h"
+
+wrap(avresample_convert(AVAudioResampleContext *avr, uint8_t **output,
+ int out_plane_size, int out_samples, uint8_t **input,
+ int in_plane_size, int in_samples))
+{
+ testneonclobbers(avresample_convert, avr, output, out_plane_size,
+ out_samples, input, in_plane_size, in_samples);
+}
diff --git a/libavutil/aarch64/neontest.h b/libavutil/aarch64/neontest.h
new file mode 100644
index 0000000..de841bb
--- /dev/null
+++ b/libavutil/aarch64/neontest.h
@@ -0,0 +1,65 @@
+/*
+ * check NEON registers for clobbering
+ * Copyright (c) 2008 Ramiro Polla <ramiro.polla at gmail.com>
+ * Copyright (c) 2013 Martin Storsjo
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; 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
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