build: add support for arm/aarch64 asm and integrate checkasm

5 files changed, 275 insertions, 0 deletions

diff --git a/src/arm/32/util.S b/src/arm/32/util.S
new file mode 100644
index 0000000..7f4405b
--- /dev/null
+++ b/src/arm/32/util.S
@@ -0,0 +1,50 @@
+/******************************************************************************
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2015 Martin Storsjo
+ * Copyright © 2015 Janne Grunau
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+#ifndef __DAVID_SRC_ARM_32_UTIL_S__
+#define __DAVID_SRC_ARM_32_UTIL_S__
+
+#include "config.h"
+#include "src/arm/asm.S"
+
+.macro movrel rd, val
+#if defined(PIC)
+    ldr         \rd,  1f
+    b           2f
+1:
+@ FIXME: thumb
+    .word       \val - (2f + 8)
+2:
+    add         \rd,  \rd,  pc
+#else
+    movw        \rd, #:lower16:\val
+    movt        \rd, #:upper16:\val
+#endif
+.endm
+
+#endif /* __DAVID_SRC_ARM_32_UTIL_S__ */
diff --git a/src/arm/64/util.S b/src/arm/64/util.S
new file mode 100644
index 0000000..53bc676
--- /dev/null
+++ b/src/arm/64/util.S
@@ -0,0 +1,62 @@
+/******************************************************************************
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2015 Martin Storsjo
+ * Copyright © 2015 Janne Grunau
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+#ifndef __DAVID_SRC_ARM_64_UTIL_S__
+#define __DAVID_SRC_ARM_64_UTIL_S__
+
+#include "config.h"
+#include "src/arm/asm.S"
+
+.macro  movrel rd, val, offset=0
+#if defined(PIC) && defined(__APPLE__)
+  .if \offset < 0
+    adrp        \rd, \val@PAGE
+    add         \rd, \rd, \val@PAGEOFF
+    sub         \rd, \rd, -(\offset)
+  .else
+    adrp        \rd, \val+(\offset)@PAGE
+    add         \rd, \rd, \val+(\offset)@PAGEOFF
+  .endif
+#elif defined(PIC) && defined(_WIN32)
+  .if \offset < 0
+    adrp        \rd, \val
+    add         \rd, \rd, :lo12:\val
+    sub         \rd, \rd, -(\offset)
+  .else
+    adrp        \rd, \val+(\offset)
+    add         \rd, \rd, :lo12:\val+(\offset)
+  .endif
+#elif defined(PIC)
+    adrp        \rd, \val+(\offset)
+    add         \rd, \rd, :lo12:\val+(\offset)
+#else
+    ldr         \rd, =\val+\offset
+#endif
+.endm
+
+#endif /* __DAVID_SRC_ARM_64_UTIL_S__ */
diff --git a/src/arm/asm.S b/src/arm/asm.S
new file mode 100644
index 0000000..4628356
--- /dev/null
+++ b/src/arm/asm.S
@@ -0,0 +1,94 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2018, Janne Grunau
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DAV1D_SRC_ARM_ASM_S__
+#define __DAV1D_SRC_ARM_ASM_S__
+
+#include "config.h"
+
+#ifndef PRIVATE_PREFIX
+#define PRIVATE_PREFIX dav1d_
+#endif
+
+#define PASTE(a,b) a ## b
+#define CONCAT(a,b) PASTE(a,b)
+
+#ifdef PREFIX
+#define EXTERN CONCAT(_,PRIVATE_PREFIX)
+#else
+#define EXTERN PRIVATE_PREFIX
+#endif
+
+.macro function name, export=0, align=2
+    .macro endfunc
+#ifdef __ELF__
+        .size   \name, . - \name
+#endif
+#if HAVE_AS_FUNC
+        .endfunc
+#endif
+        .purgem endfunc
+    .endm
+    .text
+    .align \align
+  .if \export
+    .global EXTERN\name
+#ifdef __ELF__
+    .type   EXTERN\name, %function
+#endif
+#if HAVE_AS_FUNC
+    .func   EXTERN\name
+#endif
+EXTERN\name:
+  .else
+#ifdef __ELF__
+    .type \name, %function
+#endif
+#if HAVE_AS_FUNC
+    .func \name
+#endif
+  .endif
+\name:
+.endm
+
+.macro  const   name, align=2
+    .macro endconst
+#ifdef __ELF__
+        .size   \name, . - \name
+#endif
+        .purgem endconst
+    .endm
+#if !defined(__MACH__)
+        .section        .rodata
+#else
+        .const_data
+#endif
+        .align          \align
+\name:
+.endm
+
+#endif /* __DAV1D_SRC_ARM_ASM_S__ */
diff --git a/src/arm/cpu.c b/src/arm/cpu.c
new file mode 100644
index 0000000..b0633ee
--- /dev/null
+++ b/src/arm/cpu.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2018, Janne Grunau
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "src/arm/cpu.h"
+
+unsigned dav1d_get_cpu_flags_arm(void) {
+    return DAV1D_ARM_CPU_FLAG_NEON;
+}
diff --git a/src/arm/cpu.h b/src/arm/cpu.h
new file mode 100644
index 0000000..4788901
--- /dev/null
+++ b/src/arm/cpu.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2018, Janne Grunau
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DAV1D_SRC_ARM_CPU_H__
+#define __DAV1D_SRC_ARM_CPU_H__
+
+enum CpuFlags {
+    DAV1D_ARM_CPU_FLAG_NEON = 1 << 0,
+};
+
+unsigned dav1d_get_cpu_flags_arm(void);
+
+#endif /* __DAV1D_SRC_ARM_CPU_H__ */