1 files changed, 70 insertions, 0 deletions
diff --git a/libvpx/vp8/common/arm/armv6/dc_only_idct_add_v6.asm b/libvpx/vp8/common/arm/armv6/dc_only_idct_add_v6.asm
new file mode 100644
index 0000000..9aa659f
--- /dev/null
+++ b/libvpx/vp8/common/arm/armv6/dc_only_idct_add_v6.asm
@@ -0,0 +1,70 @@
+;
+;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+;
+;  Use of this source code is governed by a BSD-style license and patent
+;  grant that can be found in the LICENSE file in the root of the source
+;  tree. All contributing project authors may be found in the AUTHORS
+;  file in the root of the source tree.
+;
+
+    EXPORT  |vp8_dc_only_idct_add_v6|
+
+    AREA    |.text|, CODE, READONLY
+
+;void vp8_dc_only_idct_add_c(short input_dc, unsigned char *pred_ptr,
+;                            int pred_stride, unsigned char *dst_ptr,
+;                            int dst_stride)
+; r0  input_dc
+; r1  pred_ptr
+; r2  pred_stride
+; r3  dst_ptr
+; sp  dst_stride
+
+|vp8_dc_only_idct_add_v6| PROC
+    stmdb       sp!, {r4 - r7}
+
+    add         r0, r0, #4                ; input_dc += 4
+    ldr         r12, c0x0000FFFF
+    ldr         r4, [r1], r2
+    and         r0, r12, r0, asr #3       ; input_dc >> 3 + mask
+    ldr         r6, [r1], r2
+    orr         r0, r0, r0, lsl #16       ; a1 | a1
+
+    ldr         r12, [sp, #16]            ; dst stride
+
+    uxtab16     r5, r0, r4                ; a1+2 | a1+0
+    uxtab16     r4, r0, r4, ror #8        ; a1+3 | a1+1
+    uxtab16     r7, r0, r6
+    uxtab16     r6, r0, r6, ror #8
+    usat16      r5, #8, r5
+    usat16      r4, #8, r4
+    usat16      r7, #8, r7
+    usat16      r6, #8, r6
+    orr         r5, r5, r4, lsl #8
+    orr         r7, r7, r6, lsl #8
+    ldr         r4, [r1], r2
+    str         r5, [r3], r12
+    ldr         r6, [r1]
+    str         r7, [r3], r12
+
+    uxtab16     r5, r0, r4
+    uxtab16     r4, r0, r4, ror #8
+    uxtab16     r7, r0, r6
+    uxtab16     r6, r0, r6, ror #8
+    usat16      r5, #8, r5
+    usat16      r4, #8, r4
+    usat16      r7, #8, r7
+    usat16      r6, #8, r6
+    orr         r5, r5, r4, lsl #8
+    orr         r7, r7, r6, lsl #8
+    str         r5, [r3], r12
+    str         r7, [r3]
+
+    ldmia       sp!, {r4 - r7}
+    bx          lr
+
+    ENDP  ; |vp8_dc_only_idct_add_v6|
+
+; Constant Pool
+c0x0000FFFF DCD 0x0000FFFF
+    END