Merge commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217'

* commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217':
  aarch64: add cpuflags support for NEON and VFP

Merged-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -1778,8 +1778,8 @@ CMDLINE_APPEND="
 armv5te_deps="arm"
 armv6_deps="arm"
 armv6t2_deps="arm"
-neon_deps="arm"
-vfp_deps="arm"
+neon_deps_any="aarch64 arm"
+vfp_deps_any="aarch64 arm"
 vfpv3_deps="vfp"
 
 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
@@ -4058,7 +4058,14 @@ od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
 
 check_inline_asm inline_asm_labels '"1:\n"'
 
-if enabled alpha; then
+if enabled aarch64; then
+    # internal assembler in clang 3.3 does not support this instruction
+    enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
+    enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
+
+    map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
+
+elif enabled alpha; then
 
     check_cflags -mieee
 
@@ -4869,6 +4876,10 @@ if enabled x86; then
     echo "EBX available             ${ebx_available-no}"
     echo "EBP available             ${ebp_available-no}"
 fi
+if enabled aarch64; then
+    echo "NEON enabled              ${neon-no}"
+    echo "VFP enabled               ${vfp-no}"
+fi
 if enabled arm; then
     echo "ARMv5TE enabled           ${armv5te-no}"
     echo "ARMv6 enabled             ${armv6-no}"

libavutil/aarch64/Makefile

@@ -0,0 +1 @@
+OBJS += aarch64/cpu.o

libavutil/aarch64/asm.S

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * 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 "config.h"
+
+#ifdef __ELF__
+#   define ELF
+#else
+#   define ELF //
+#endif
+
+.macro  function name, export=0, align=2
+    .macro endfunc
+ELF     .size   \name, . - \name
+        .endfunc
+        .purgem endfunc
+    .endm
+        .text
+        .align          \align
+    .if \export
+        .global EXTERN_ASM\name
+EXTERN_ASM\name:
+    .endif
+ELF     .type   \name, %function
+        .func   \name
+\name:
+.endm
+
+.macro  const   name, align=2
+    .macro endconst
+ELF     .size   \name, . - \name
+        .purgem endconst
+    .endm
+        .section        .rodata
+        .align          \align
+\name:
+.endm
+
+.macro  movrel rd, val
+#if CONFIG_PIC
+        adrp            \rd, #:pg_hi21:\val
+        add             \rd, \rd, #:lo12:\val
+#else
+        ldr             \rd, =\val
+#endif
+.endm

libavutil/aarch64/cpu.c

@@ -0,0 +1,27 @@
+/*
+ * 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 "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+#include "config.h"
+
+int ff_get_cpu_flags_aarch64(void)
+{
+    return AV_CPU_FLAG_NEON * HAVE_NEON |
+           AV_CPU_FLAG_VFP  * HAVE_VFP;
+}

libavutil/aarch64/cpu.h

@@ -0,0 +1,29 @@
+/*
+ * 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
+ */
+
+#ifndef AVUTIL_AARCH64_CPU_H
+#define AVUTIL_AARCH64_CPU_H
+
+#include "config.h"
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#define have_neon(flags) CPUEXT(flags, NEON)
+#define have_vfp(flags)  CPUEXT(flags, VFP)
+
+#endif /* AVUTIL_AARCH64_CPU_H */

libavutil/cpu.c

@@ -56,9 +56,14 @@ int av_get_cpu_flags(void)
     if (checked)
         return flags;
 
-    if (ARCH_ARM) flags = ff_get_cpu_flags_arm();
-    if (ARCH_PPC) flags = ff_get_cpu_flags_ppc();
-    if (ARCH_X86) flags = ff_get_cpu_flags_x86();
+    if (ARCH_AARCH64)
+        flags = ff_get_cpu_flags_aarch64();
+    if (ARCH_ARM)
+        flags = ff_get_cpu_flags_arm();
+    if (ARCH_PPC)
+        flags = ff_get_cpu_flags_ppc();
+    if (ARCH_X86)
+        flags = ff_get_cpu_flags_x86();
 
     checked = 1;
     return flags;
@@ -118,6 +123,9 @@ int av_parse_cpu_flags(const char *s)
         { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
         { "vfpv3",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3    },    .unit = "flags" },
         { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+#elif ARCH_AARCH64
+        { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+        { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
 #endif
         { NULL },
     };
@@ -244,7 +252,10 @@ static const struct {
     int flag;
     const char *name;
 } cpu_flag_tab[] = {
-#if   ARCH_ARM
+#if   ARCH_AARCH64
+    { AV_CPU_FLAG_NEON,      "neon"       },
+    { AV_CPU_FLAG_VFP,       "vfp"        },
+#elif ARCH_ARM
     { AV_CPU_FLAG_ARMV5TE,   "armv5te"    },
     { AV_CPU_FLAG_ARMV6,     "armv6"      },
     { AV_CPU_FLAG_ARMV6T2,   "armv6t2"    },

libavutil/cpu_internal.h

@@ -26,6 +26,7 @@
 
 #define CPUEXT(flags, cpuext) CPUEXT_SUFFIX(flags, , cpuext)
 
+int ff_get_cpu_flags_aarch64(void);
 int ff_get_cpu_flags_arm(void);
 int ff_get_cpu_flags_ppc(void);
 int ff_get_cpu_flags_x86(void);