diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s | 160 |
1 files changed, 80 insertions, 80 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s index 0383269..02bdcab 100644 --- a/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s +++ b/media/libstagefright/codecs/amrwbenc/src/asm/ARMV5E/Dot_p_opt.s @@ -1,80 +1,80 @@ -@/*
-@ ** Copyright 2003-2010, VisualOn, Inc.
-@ **
-@ ** Licensed under the Apache License, Version 2.0 (the "License");
-@ ** you may not use this file except in compliance with the License.
-@ ** You may obtain a copy of the License at
-@ **
-@ ** http://www.apache.org/licenses/LICENSE-2.0
-@ **
-@ ** Unless required by applicable law or agreed to in writing, software
-@ ** distributed under the License is distributed on an "AS IS" BASIS,
-@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@ ** See the License for the specific language governing permissions and
-@ ** limitations under the License.
-@ */
-@
-@Word32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */
-@ Word16 x[], /* (i) 12bits: x vector */
-@ Word16 y[], /* (i) 12bits: y vector */
-@ Word16 lg, /* (i) : vector length */
-@ Word16 * exp /* (o) : exponent of result (0..+30) */
-@)
-@****************************************************************
-@ x[] --- r0
-@ y[] --- r1
-@ lg --- r2
-@ *exp --- r3
-
- .section .text
- .global Dot_product12_asm
-
-Dot_product12_asm:
-
- STMFD r13!, {r4 - r12, r14}
- MOV r4, #0 @ L_sum = 0
- MOV r5, #0 @ i = 0
-
-LOOP:
- LDR r6, [r0], #4
- LDR r7, [r1], #4
- LDR r8, [r0], #4
- SMLABB r4, r6, r7, r4
- LDR r9, [r1], #4
- SMLATT r4, r6, r7, r4
-
- LDR r6, [r0], #4
- SMLABB r4, r8, r9, r4
-
- LDR r7, [r1], #4
- SMLATT r4, r8, r9, r4
- LDR r8, [r0], #4
-
- SMLABB r4, r6, r7, r4
- LDR r9, [r1], #4
- SMLATT r4, r6, r7, r4
- ADD r5, r5, #8
- SMLABB r4, r8, r9, r4
- CMP r5, r2
- SMLATT r4, r8, r9, r4
- BLT LOOP
-
- MOV r12, r4, LSL #1
- ADD r12, r12, #1 @ L_sum = (L_sum << 1) + 1
- MOV r4, r12
-
- CMP r12, #0
- RSBLT r4, r12, #0
- CLZ r10, r4
- SUB r10, r10, #1 @ sft = norm_l(L_sum)
- MOV r0, r12, LSL r10 @ L_sum = L_sum << sft
- RSB r11, r10, #30 @ *exp = 30 - sft
- STRH r11, [r3]
-
-Dot_product12_end:
-
- LDMFD r13!, {r4 - r12, r15}
- @ENDFUNC
- .END
-
-
+@/* +@ ** Copyright 2003-2010, VisualOn, Inc. +@ ** +@ ** Licensed under the Apache License, Version 2.0 (the "License"); +@ ** you may not use this file except in compliance with the License. +@ ** You may obtain a copy of the License at +@ ** +@ ** http://www.apache.org/licenses/LICENSE-2.0 +@ ** +@ ** Unless required by applicable law or agreed to in writing, software +@ ** distributed under the License is distributed on an "AS IS" BASIS, +@ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@ ** See the License for the specific language governing permissions and +@ ** limitations under the License. +@ */ +@ +@Word32 Dot_product12( /* (o) Q31: normalized result (1 < val <= -1) */ +@ Word16 x[], /* (i) 12bits: x vector */ +@ Word16 y[], /* (i) 12bits: y vector */ +@ Word16 lg, /* (i) : vector length */ +@ Word16 * exp /* (o) : exponent of result (0..+30) */ +@) +@**************************************************************** +@ x[] --- r0 +@ y[] --- r1 +@ lg --- r2 +@ *exp --- r3 + + .section .text + .global Dot_product12_asm + +Dot_product12_asm: + + STMFD r13!, {r4 - r12, r14} + MOV r4, #0 @ L_sum = 0 + MOV r5, #0 @ i = 0 + +LOOP: + LDR r6, [r0], #4 + LDR r7, [r1], #4 + LDR r8, [r0], #4 + SMLABB r4, r6, r7, r4 + LDR r9, [r1], #4 + SMLATT r4, r6, r7, r4 + + LDR r6, [r0], #4 + SMLABB r4, r8, r9, r4 + + LDR r7, [r1], #4 + SMLATT r4, r8, r9, r4 + LDR r8, [r0], #4 + + SMLABB r4, r6, r7, r4 + LDR r9, [r1], #4 + SMLATT r4, r6, r7, r4 + ADD r5, r5, #8 + SMLABB r4, r8, r9, r4 + CMP r5, r2 + SMLATT r4, r8, r9, r4 + BLT LOOP + + MOV r12, r4, LSL #1 + ADD r12, r12, #1 @ L_sum = (L_sum << 1) + 1 + MOV r4, r12 + + CMP r12, #0 + RSBLT r4, r12, #0 + CLZ r10, r4 + SUB r10, r10, #1 @ sft = norm_l(L_sum) + MOV r0, r12, LSL r10 @ L_sum = L_sum << sft + RSB r11, r10, #30 @ *exp = 30 - sft + STRH r11, [r3] + +Dot_product12_end: + + LDMFD r13!, {r4 - r12, r15} + @ENDFUNC + .END + + |