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Diffstat (limited to '')
| -rw-r--r-- | third_party/dav1d/src/arm/32/util.S | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/third_party/dav1d/src/arm/32/util.S b/third_party/dav1d/src/arm/32/util.S new file mode 100644 index 0000000000..c3710d3767 --- /dev/null +++ b/third_party/dav1d/src/arm/32/util.S @@ -0,0 +1,184 @@ +/****************************************************************************** + * 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 DAV1D_SRC_ARM_32_UTIL_S +#define DAV1D_SRC_ARM_32_UTIL_S + +#include "config.h" +#include "src/arm/asm.S" + +.macro movrel_local rd, val, offset=0 +#if defined(PIC) + ldr \rd, 90001f + b 90002f +90001: + .word \val + \offset - (90002f + 8 - 4 * CONFIG_THUMB) +90002: + add \rd, \rd, pc +#else + movw \rd, #:lower16:\val+\offset + movt \rd, #:upper16:\val+\offset +#endif +.endm + +.macro movrel rd, val, offset=0 +#if defined(PIC) && defined(__APPLE__) + ldr \rd, 1f + b 2f +1: + .word 3f - (2f + 8 - 4 * CONFIG_THUMB) +2: + ldr \rd, [pc, \rd] +.if \offset < 0 + sub \rd, \rd, #-(\offset) +.elseif \offset > 0 + add \rd, \rd, #\offset +.endif + .non_lazy_symbol_pointer +3: + .indirect_symbol \val + .word 0 + .text +#else + movrel_local \rd, \val, \offset +#endif +.endm + +// This macro clobbers r7 (and r12 on windows) and stores data at the +// bottom of the stack; sp is the start of the space allocated that +// the caller can use. +.macro sub_sp_align space +#if CONFIG_THUMB + mov r7, sp + and r7, r7, #15 +#else + and r7, sp, #15 +#endif + sub sp, sp, r7 + // Now the stack is aligned, store the amount of adjustment back + // on the stack, as we don't want to waste a register as frame + // pointer. + str r7, [sp, #-16]! +#ifdef _WIN32 +.if \space > 8192 + // Here, we'd need to touch two (or more) pages while decrementing + // the stack pointer. + .error "sub_sp_align doesn't support values over 8K at the moment" +.elseif \space > 4096 + sub r7, sp, #4096 + ldr r12, [r7] + sub r7, r7, #(\space - 4096) + mov sp, r7 +.else + sub sp, sp, #\space +.endif +#else +.if \space >= 4096 + sub sp, sp, #(\space)/4096*4096 +.endif +.if (\space % 4096) != 0 + sub sp, sp, #(\space)%4096 +.endif +#endif +.endm + +.macro add_sp_align space +.if \space >= 4096 + add sp, sp, #(\space)/4096*4096 +.endif +.if (\space % 4096) != 0 + add sp, sp, #(\space)%4096 +.endif + ldr r7, [sp], #16 + // Add back the original stack adjustment + add sp, sp, r7 +.endm + +.macro transpose_8x8b q0, q1, q2, q3, r0, r1, r2, r3, r4, r5, r6, r7 + vtrn.32 \q0, \q2 + vtrn.32 \q1, \q3 + + vtrn.16 \r0, \r2 + vtrn.16 \r1, \r3 + vtrn.16 \r4, \r6 + vtrn.16 \r5, \r7 + + vtrn.8 \r0, \r1 + vtrn.8 \r2, \r3 + vtrn.8 \r4, \r5 + vtrn.8 \r6, \r7 +.endm + +.macro transpose_8x8h r0, r1, r2, r3, r4, r5, r6, r7, d0, d1, d2, d3, d4, d5, d6, d7 + vswp \d0, \d4 + vswp \d1, \d5 + vswp \d2, \d6 + vswp \d3, \d7 + + vtrn.32 \r0, \r2 + vtrn.32 \r1, \r3 + vtrn.32 \r4, \r6 + vtrn.32 \r5, \r7 + + vtrn.16 \r0, \r1 + vtrn.16 \r2, \r3 + vtrn.16 \r4, \r5 + vtrn.16 \r6, \r7 +.endm + +.macro transpose_4x8b q0, q1, r0, r1, r2, r3 + vtrn.16 \q0, \q1 + + vtrn.8 \r0, \r1 + vtrn.8 \r2, \r3 +.endm + +.macro transpose_4x4s q0, q1, q2, q3, r0, r1, r2, r3, r4, r5, r6, r7 + vswp \r1, \r4 // vtrn.64 \q0, \q2 + vswp \r3, \r6 // vtrn.64 \q1, \q3 + + vtrn.32 \q0, \q1 + vtrn.32 \q2, \q3 +.endm + +.macro transpose_4x4h q0, q1, r0, r1, r2, r3 + vtrn.32 \q0, \q1 + + vtrn.16 \r0, \r1 + vtrn.16 \r2, \r3 +.endm + +.macro transpose_4x8h r0, r1, r2, r3 + vtrn.32 \r0, \r2 + vtrn.32 \r1, \r3 + + vtrn.16 \r0, \r1 + vtrn.16 \r2, \r3 +.endm + +#endif /* DAV1D_SRC_ARM_32_UTIL_S */ |