11a222f5d9
Adds following targets to configure script to support RVCT compilation without operating system support (for Profiler or bare metal images). - armv5te-none-rvct - armv6-none-rvct - armv7-none-rvct To strip OS specific parts from the code "os_support"-config was added to script and CONFIG_OS_SUPPORT flag is used in the code to exclude OS specific parts such as OS specific includes and function calls for timers and threads etc. This was done to enable RVCT compilation for profiling purposes or running the image on bare metal target with Lauterbach. Removed separate AREA directives for READONLY data in armv6 and neon assembly files to fix the RVCT compilation. Otherwise "ldr <reg>, =label" syntax would have been needed to prevent linker errors. This syntax is not supported by older gnu assemblers. Change-Id: I14f4c68529e8c27397502fbc3010a54e505ddb43
145 lines
4.0 KiB
NASM
145 lines
4.0 KiB
NASM
;
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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EXPORT |vp8_short_fdct4x4_neon|
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EXPORT |vp8_short_fdct8x4_neon|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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; r0 short *input
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; r1 short *output
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; r2 int pitch
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; Input has a pitch, output is contiguous
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|vp8_short_fdct4x4_neon| PROC
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ldr r12, _dct_matrix_
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vld1.16 d0, [r0], r2
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vld1.16 d1, [r0], r2
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vld1.16 d2, [r0], r2
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vld1.16 d3, [r0]
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vld1.16 {q2, q3}, [r12]
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;first stage
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vmull.s16 q11, d4, d0[0] ;i=0
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vmull.s16 q12, d4, d1[0] ;i=1
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vmull.s16 q13, d4, d2[0] ;i=2
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vmull.s16 q14, d4, d3[0] ;i=3
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vmlal.s16 q11, d5, d0[1]
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vmlal.s16 q12, d5, d1[1]
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vmlal.s16 q13, d5, d2[1]
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vmlal.s16 q14, d5, d3[1]
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vmlal.s16 q11, d6, d0[2]
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vmlal.s16 q12, d6, d1[2]
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vmlal.s16 q13, d6, d2[2]
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vmlal.s16 q14, d6, d3[2]
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vmlal.s16 q11, d7, d0[3] ;sumtemp for i=0
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vmlal.s16 q12, d7, d1[3] ;sumtemp for i=1
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vmlal.s16 q13, d7, d2[3] ;sumtemp for i=2
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vmlal.s16 q14, d7, d3[3] ;sumtemp for i=3
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; rounding
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vrshrn.i32 d22, q11, #14
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vrshrn.i32 d24, q12, #14
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vrshrn.i32 d26, q13, #14
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vrshrn.i32 d28, q14, #14
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;second stage
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vmull.s16 q4, d22, d4[0] ;i=0
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vmull.s16 q5, d22, d4[1] ;i=1
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vmull.s16 q6, d22, d4[2] ;i=2
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vmull.s16 q7, d22, d4[3] ;i=3
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vmlal.s16 q4, d24, d5[0]
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vmlal.s16 q5, d24, d5[1]
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vmlal.s16 q6, d24, d5[2]
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vmlal.s16 q7, d24, d5[3]
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vmlal.s16 q4, d26, d6[0]
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vmlal.s16 q5, d26, d6[1]
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vmlal.s16 q6, d26, d6[2]
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vmlal.s16 q7, d26, d6[3]
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vmlal.s16 q4, d28, d7[0] ;sumtemp for i=0
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vmlal.s16 q5, d28, d7[1] ;sumtemp for i=1
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vmlal.s16 q6, d28, d7[2] ;sumtemp for i=2
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vmlal.s16 q7, d28, d7[3] ;sumtemp for i=3
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vrshr.s32 q0, q4, #16
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vrshr.s32 q1, q5, #16
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vrshr.s32 q2, q6, #16
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vrshr.s32 q3, q7, #16
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vmovn.i32 d0, q0
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vmovn.i32 d1, q1
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vmovn.i32 d2, q2
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vmovn.i32 d3, q3
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vst1.16 {q0, q1}, [r1]
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bx lr
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ENDP
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; r0 short *input
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; r1 short *output
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; r2 int pitch
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|vp8_short_fdct8x4_neon| PROC
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; Store link register and input before calling
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; first 4x4 fdct. Do not need to worry about
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; output or pitch because those pointers are not
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; touched in the 4x4 fdct function
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stmdb sp!, {r0, lr}
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bl vp8_short_fdct4x4_neon
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ldmia sp!, {r0, lr}
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; Move to the next block of data.
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add r0, r0, #8
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add r1, r1, #32
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; Second time through do not store off the
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; link register, just return from the 4x4 fdtc
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b vp8_short_fdct4x4_neon
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; Should never get to this.
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bx lr
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ENDP
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;-----------------
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_dct_matrix_
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DCD dct_matrix
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dct_matrix
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; DCW 23170, 30274, 23170, 12540
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; DCW 23170, 12540, -23170,-30274
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; DCW 23170, -12540, -23170, 30274
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; DCW 23170, -30274, 23170,-12540
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; 23170 = 0x5a82
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; -23170 = 0xa57e
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; 30274 = 0x7642
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; -30274 = 0x89be
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; 12540 = 0x30fc
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; -12540 = 0xcf04
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DCD 0x76425a82, 0x30fc5a82
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DCD 0x30fc5a82, 0x89bea57e
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DCD 0xcf045a82, 0x7642a57e
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DCD 0x89be5a82, 0xcf045a82
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END
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