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pkgsrc/www/seamonkey/patches/patch-mozilla_gfx_ycbcr_yuv__row__arm.S
ryoon 42fec3ef7a Update to 2.31 
Changelog:
# What's New in SeaMonkey 2.31

SeaMonkey 2.31 contains the following major changes relative to SeaMonkey 2.30:

## SeaMonkey-specific changes

    Text zoom is now available in Composer.
    GStreamer and PulseAudio support has been re-enabled on Linux.

## Mozilla platform changes

    Support for H264 (MP4) is now built in on Mac OS X Snow Leopard (10.6) and newer through native APIs.
    HTTP/2 (draft14) and ALPN have been implemented.
    Added ability to recover from a locked process in the "SeaMonkey is already running" dialog on Windows.
    Added ECDH support for WebCrypto.
    The console.table function has been added to the Error Console.
    CSS transitions start correctly now when started at the same time as changes to display, position, overflow, and similar properties.
    Also see Firefox 34 for Developers.
    Fixed several stability issues.

# Security fixes
Fixed in SeaMonkey 2.31
    2014-91 Privileged access to security wrapped protected objects
    2014-89 Bad casting from the BasicThebesLayer to BasicContainerLayer
    2014-88 Buffer overflow while parsing media content
    2014-87 Use-after-free during HTML5 parsing
    2014-86 CSP leaks redirect data via violation reports
    2014-85 XMLHttpRequest crashes with some input streams
    2014-84 XBL bindings accessible via improper CSS declarations
    2014-83 Miscellaneous memory safety hazards (rv:34.0 / rv:31.3)
2015-01-02 04:26:21 +00:00

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$NetBSD: patch-mozilla_gfx_ycbcr_yuv__row__arm.S,v 1.1 2015/01/02 04:26:21 ryoon Exp $
--- mozilla/gfx/ycbcr/yuv_row_arm.S.orig 2015-01-01 17:44:52.000000000 +0000
+++ mozilla/gfx/ycbcr/yuv_row_arm.S
@@ -0,0 +1,312 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if defined(__ARM_EABI__) && !defined(__ARM_DWARF_EH__)
+#define UNWIND
+#else
+#define UNWIND @
+#endif
+
+ .arch armv7-a
+ .fpu neon
+/* Allow to build on targets not supporting neon, and force the object file
+ * target to avoid bumping the final binary target */
+ .object_arch armv4t
+ .text
+ .align
+
+ .balign 64
+YCbCr42xToRGB565_DITHER03_CONSTS_NEON:
+ .short -14240
+ .short -14240+384
+ .short 8672
+ .short 8672+192
+ .short -17696
+ .short -17696+384
+ .byte 102
+ .byte 25
+ .byte 52
+ .byte 129
+YCbCr42xToRGB565_DITHER12_CONSTS_NEON:
+ .short -14240+128
+ .short -14240+256
+ .short 8672+64
+ .short 8672+128
+ .short -17696+128
+ .short -17696+256
+ .byte 102
+ .byte 25
+ .byte 52
+ .byte 129
+YCbCr42xToRGB565_DITHER21_CONSTS_NEON:
+ .short -14240+256
+ .short -14240+128
+ .short 8672+128
+ .short 8672+64
+ .short -17696+256
+ .short -17696+128
+ .byte 102
+ .byte 25
+ .byte 52
+ .byte 129
+YCbCr42xToRGB565_DITHER30_CONSTS_NEON:
+ .short -14240+384
+ .short -14240
+ .short 8672+192
+ .short 8672
+ .short -17696+384
+ .short -17696
+ .byte 102
+ .byte 25
+ .byte 52
+ .byte 129
+
+@ void ScaleYCbCr42xToRGB565_BilinearY_Row_NEON(
+@ yuv2rgb565_row_scale_bilinear_ctx *ctx, int dither);
+@
+@ ctx = {
+@ uint16_t *rgb_row; /*r0*/
+@ const uint8_t *y_row; /*r1*/
+@ const uint8_t *u_row; /*r2*/
+@ const uint8_t *v_row; /*r3*/
+@ int y_yweight; /*r4*/
+@ int y_pitch; /*r5*/
+@ int width; /*r6*/
+@ int source_x0_q16; /*r7*/
+@ int source_dx_q16; /*r8*/
+@ int source_uv_xoffs_q16; /*r9*/
+@ };
+ .global ScaleYCbCr42xToRGB565_BilinearY_Row_NEON
+ .type ScaleYCbCr42xToRGB565_BilinearY_Row_NEON, %function
+ .balign 64
+ .cfi_startproc
+ UNWIND .fnstart
+ScaleYCbCr42xToRGB565_BilinearY_Row_NEON:
+ STMFD r13!,{r4-r9,r14} @ 8 words.
+ ADR r14,YCbCr42xToRGB565_DITHER03_CONSTS_NEON
+ VPUSH {Q4-Q7} @ 16 words.
+ ADD r14,r14,r1, LSL #4 @ Select the dither table to use
+ LDMIA r0, {r0-r9}
+ @ Set up image index registers.
+ ADD r12,r8, r8
+ VMOV.I32 D16,#0 @ Q8 = < 2| 2| 0| 0>*source_dx_q16
+ VDUP.32 D17,r12
+ ADD r12,r12,r12
+ VTRN.32 D16,D17 @ Q2 = < 2| 0| 2| 0>*source_dx_q16
+ VDUP.32 D19,r12 @ Q9 = < 4| 4| ?| ?>*source_dx_q16
+ ADD r12,r12,r12
+ VDUP.32 Q0, r7 @ Q0 = < 1| 1| 1| 1>*source_x0_q16
+ VADD.I32 D17,D17,D19 @ Q8 = < 6| 4| 2| 0>*source_dx_q16
+ CMP r8, #0 @ If source_dx_q16 is negative...
+ VDUP.32 Q9, r12 @ Q9 = < 8| 8| 8| 8>*source_dx_q16
+ ADDLT r7, r7, r8, LSL #4 @ Make r7 point to the end of the block
+ VADD.I32 Q0, Q0, Q8 @ Q0 = < 6| 4| 2| 0>*source_dx_q16+source_x0_q16
+ SUBLT r7, r7, r8 @ (i.e., the lowest address we'll use)
+ VADD.I32 Q1, Q0, Q9 @ Q1 = <14|12|10| 8>*source_dx_q16+source_x0_q16
+ VDUP.I32 Q9, r8 @ Q8 = < 1| 1| 1| 1>*source_dx_q16
+ VADD.I32 Q2, Q0, Q9 @ Q2 = < 7| 5| 3| 1>*source_dx_q16+source_x0_q16
+ VADD.I32 Q3, Q1, Q9 @ Q3 = <15|13|11| 9>*source_dx_q16+source_x0_q16
+ VLD1.64 {D30,D31},[r14,:128] @ Load some constants
+ VMOV.I8 D28,#52
+ VMOV.I8 D29,#129
+ @ The basic idea here is to do aligned loads of a block of data and then
+ @ index into it using VTBL to extract the data from the source X
+ @ coordinate corresponding to each destination pixel.
+ @ This is significantly less code and significantly fewer cycles than doing
+ @ a series of single-lane loads, but it means that the X step between
+ @ pixels must be limited to 2.0 or less, otherwise we couldn't guarantee
+ @ that we could read 8 pixels from a single aligned 32-byte block of data.
+ @ Q0...Q3 contain the 16.16 fixed-point X coordinates of each pixel,
+ @ separated into even pixels and odd pixels to make extracting offsets and
+ @ weights easier.
+ @ We then pull out two bytes from the middle of each coordinate: the top
+ @ byte corresponds to the integer part of the X coordinate, and the bottom
+ @ byte corresponds to the weight to use for bilinear blending.
+ @ These are separated out into different registers with VTRN.
+ @ Then by subtracting the integer X coordinate of the first pixel in the
+ @ data block we loaded, we produce an index register suitable for use by
+ @ VTBL.
+s42xbily_neon_loop:
+ @ Load the Y' data.
+ MOV r12,r7, ASR #16
+ VRSHRN.S32 D16,Q0, #8
+ AND r12,r12,#~15 @ Read 16-byte aligned blocks
+ VDUP.I8 D20,r12
+ ADD r12,r1, r12 @ r12 = y_row+(source_x&~7)
+ VRSHRN.S32 D17,Q1, #8
+ PLD [r12,#64]
+ VLD1.64 {D8, D9, D10,D11},[r12,:128],r5 @ Load Y' top row
+ ADD r14,r7, r8, LSL #3
+ VRSHRN.S32 D18,Q2, #8
+ MOV r14,r14,ASR #16
+ VRSHRN.S32 D19,Q3, #8
+ AND r14,r14,#~15 @ Read 16-byte aligned blocks
+ VLD1.64 {D12,D13,D14,D15},[r12,:128] @ Load Y' bottom row
+ PLD [r12,#64]
+ VDUP.I8 D21,r14
+ ADD r14,r1, r14 @ r14 = y_row+(source_x&~7)
+ VMOV.I8 Q13,#1
+ PLD [r14,#64]
+ VTRN.8 Q8, Q9 @ Q8 = <wFwEwDwCwBwAw9w8w7w6w5w4w3w2w1w0>
+ @ Q9 = <xFxExDxCxBxAx9x8x7x6x5x4x3x2x1x0>
+ VSUB.S8 Q9, Q9, Q10 @ Make offsets relative to the data we loaded.
+ @ First 8 Y' pixels
+ VTBL.8 D20,{D8, D9, D10,D11},D18 @ Index top row at source_x
+ VTBL.8 D24,{D12,D13,D14,D15},D18 @ Index bottom row at source_x
+ VADD.S8 Q13,Q9, Q13 @ Add 1 to source_x
+ VTBL.8 D22,{D8, D9, D10,D11},D26 @ Index top row at source_x+1
+ VTBL.8 D26,{D12,D13,D14,D15},D26 @ Index bottom row at source_x+1
+ @ Next 8 Y' pixels
+ VLD1.64 {D8, D9, D10,D11},[r14,:128],r5 @ Load Y' top row
+ VLD1.64 {D12,D13,D14,D15},[r14,:128] @ Load Y' bottom row
+ PLD [r14,#64]
+ VTBL.8 D21,{D8, D9, D10,D11},D19 @ Index top row at source_x
+ VTBL.8 D25,{D12,D13,D14,D15},D19 @ Index bottom row at source_x
+ VTBL.8 D23,{D8, D9, D10,D11},D27 @ Index top row at source_x+1
+ VTBL.8 D27,{D12,D13,D14,D15},D27 @ Index bottom row at source_x+1
+ @ Blend Y'.
+ VDUP.I16 Q9, r4 @ Load the y weights.
+ VSUBL.U8 Q4, D24,D20 @ Q5:Q4 = c-a
+ VSUBL.U8 Q5, D25,D21
+ VSUBL.U8 Q6, D26,D22 @ Q7:Q6 = d-b
+ VSUBL.U8 Q7, D27,D23
+ VMUL.S16 Q4, Q4, Q9 @ Q5:Q4 = (c-a)*yweight
+ VMUL.S16 Q5, Q5, Q9
+ VMUL.S16 Q6, Q6, Q9 @ Q7:Q6 = (d-b)*yweight
+ VMUL.S16 Q7, Q7, Q9
+ VMOVL.U8 Q12,D16 @ Promote the x weights to 16 bits.
+ VMOVL.U8 Q13,D17 @ Sadly, there's no VMULW.
+ VRSHRN.S16 D8, Q4, #8 @ Q4 = (c-a)*yweight+128>>8
+ VRSHRN.S16 D9, Q5, #8
+ VRSHRN.S16 D12,Q6, #8 @ Q6 = (d-b)*yweight+128>>8
+ VRSHRN.S16 D13,Q7, #8
+ VADD.I8 Q10,Q10,Q4 @ Q10 = a+((c-a)*yweight+128>>8)
+ VADD.I8 Q11,Q11,Q6 @ Q11 = b+((d-b)*yweight+128>>8)
+ VSUBL.U8 Q4, D22,D20 @ Q5:Q4 = b-a
+ VSUBL.U8 Q5, D23,D21
+ VMUL.S16 Q4, Q4, Q12 @ Q5:Q4 = (b-a)*xweight
+ VMUL.S16 Q5, Q5, Q13
+ VRSHRN.S16 D8, Q4, #8 @ Q4 = (b-a)*xweight+128>>8
+ ADD r12,r7, r9
+ VRSHRN.S16 D9, Q5, #8
+ MOV r12,r12,ASR #17
+ VADD.I8 Q8, Q10,Q4 @ Q8 = a+((b-a)*xweight+128>>8)
+ @ Start extracting the chroma x coordinates, and load Cb and Cr.
+ AND r12,r12,#~15 @ Read 16-byte aligned blocks
+ VDUP.I32 Q9, r9 @ Q9 = source_uv_xoffs_q16 x 4
+ ADD r14,r2, r12
+ VADD.I32 Q10,Q0, Q9
+ VLD1.64 {D8, D9, D10,D11},[r14,:128] @ Load Cb
+ PLD [r14,#64]
+ VADD.I32 Q11,Q1, Q9
+ ADD r14,r3, r12
+ VADD.I32 Q12,Q2, Q9
+ VLD1.64 {D12,D13,D14,D15},[r14,:128] @ Load Cr
+ PLD [r14,#64]
+ VADD.I32 Q13,Q3, Q9
+ VRSHRN.S32 D20,Q10,#9 @ Q10 = <xEwExCwCxAwAx8w8x6w6x4w4x2w2x0w0>
+ VRSHRN.S32 D21,Q11,#9
+ VDUP.I8 Q9, r12
+ VRSHRN.S32 D22,Q12,#9 @ Q11 = <xFwFxDwDxBwBx9w9x7w7x5w5x3w3x1w1>
+ VRSHRN.S32 D23,Q13,#9
+ @ We don't actually need the x weights, but we get them for free.
+ @ Free ALU slot
+ VTRN.8 Q10,Q11 @ Q10 = <wFwEwDwCwBwAw9w8w7w6w5w4w3w2w1w0>
+ @ Free ALU slot @ Q11 = <xFxExDxCxBxAx9x8x7x6x5x4x3x2x1x0>
+ VSUB.S8 Q11,Q11,Q9 @ Make offsets relative to the data we loaded.
+ VTBL.8 D18,{D8, D9, D10,D11},D22 @ Index Cb at source_x
+ VMOV.I8 D24,#74
+ VTBL.8 D19,{D8, D9, D10,D11},D23
+ VMOV.I8 D26,#102
+ VTBL.8 D20,{D12,D13,D14,D15},D22 @ Index Cr at source_x
+ VMOV.I8 D27,#25
+ VTBL.8 D21,{D12,D13,D14,D15},D23
+ @ We now have Y' in Q8, Cb in Q9, and Cr in Q10
+ @ We use VDUP to expand constants, because it's a permute instruction, so
+ @ it can dual issue on the A8.
+ SUBS r6, r6, #16 @ width -= 16
+ VMULL.U8 Q4, D16,D24 @ Q5:Q4 = Y'*74
+ VDUP.32 Q6, D30[1] @ Q7:Q6 = bias_G
+ VMULL.U8 Q5, D17,D24
+ VDUP.32 Q7, D30[1]
+ VMLSL.U8 Q6, D18,D27 @ Q7:Q6 = -25*Cb+bias_G
+ VDUP.32 Q11,D30[0] @ Q12:Q11 = bias_R
+ VMLSL.U8 Q7, D19,D27
+ VDUP.32 Q12,D30[0]
+ VMLAL.U8 Q11,D20,D26 @ Q12:Q11 = 102*Cr+bias_R
+ VDUP.32 Q8, D31[0] @ Q13:Q8 = bias_B
+ VMLAL.U8 Q12,D21,D26
+ VDUP.32 Q13,D31[0]
+ VMLAL.U8 Q8, D18,D29 @ Q13:Q8 = 129*Cb+bias_B
+ VMLAL.U8 Q13,D19,D29
+ VMLSL.U8 Q6, D20,D28 @ Q7:Q6 = -25*Cb-52*Cr+bias_G
+ VMLSL.U8 Q7, D21,D28
+ VADD.S16 Q11,Q4, Q11 @ Q12:Q11 = 74*Y'+102*Cr+bias_R
+ VADD.S16 Q12,Q5, Q12
+ VQADD.S16 Q8, Q4, Q8 @ Q13:Q8 = 74*Y'+129*Cr+bias_B
+ VQADD.S16 Q13,Q5, Q13
+ VADD.S16 Q6, Q4, Q6 @ Q7:Q6 = 74*Y'-25*Cb-52*Cr+bias_G
+ VADD.S16 Q7, Q5, Q7
+ @ Push each value to the top of its word and saturate it.
+ VQSHLU.S16 Q11,Q11,#2
+ VQSHLU.S16 Q12,Q12,#2
+ VQSHLU.S16 Q6, Q6, #2
+ VQSHLU.S16 Q7, Q7, #2
+ VQSHLU.S16 Q8, Q8, #2
+ VQSHLU.S16 Q13,Q13,#2
+ @ Merge G and B into R.
+ VSRI.U16 Q11,Q6, #5
+ VSRI.U16 Q12,Q7, #5
+ VSRI.U16 Q11,Q8, #11
+ MOV r14,r8, LSL #4
+ VSRI.U16 Q12,Q13,#11
+ BLT s42xbily_neon_tail
+ VDUP.I32 Q13,r14
+ @ Store the result.
+ VST1.16 {D22,D23,D24,D25},[r0]!
+ BEQ s42xbily_neon_done
+ @ Advance the x coordinates.
+ VADD.I32 Q0, Q0, Q13
+ VADD.I32 Q1, Q1, Q13
+ ADD r7, r14
+ VADD.I32 Q2, Q2, Q13
+ VADD.I32 Q3, Q3, Q13
+ B s42xbily_neon_loop
+s42xbily_neon_tail:
+ @ We have between 1 and 15 pixels left to write.
+ @ -r6 == the number of pixels we need to skip writing.
+ @ Adjust r0 to point to the last one we need to write, because we're going
+ @ to write them in reverse order.
+ ADD r0, r0, r6, LSL #1
+ MOV r14,#-2
+ ADD r0, r0, #30
+ @ Skip past the ones we don't need to write.
+ SUB PC, PC, r6, LSL #2
+ ORR r0, r0, r0
+ VST1.16 {D25[3]},[r0,:16],r14
+ VST1.16 {D25[2]},[r0,:16],r14
+ VST1.16 {D25[1]},[r0,:16],r14
+ VST1.16 {D25[0]},[r0,:16],r14
+ VST1.16 {D24[3]},[r0,:16],r14
+ VST1.16 {D24[2]},[r0,:16],r14
+ VST1.16 {D24[1]},[r0,:16],r14
+ VST1.16 {D24[0]},[r0,:16],r14
+ VST1.16 {D23[3]},[r0,:16],r14
+ VST1.16 {D23[2]},[r0,:16],r14
+ VST1.16 {D23[1]},[r0,:16],r14
+ VST1.16 {D23[0]},[r0,:16],r14
+ VST1.16 {D22[3]},[r0,:16],r14
+ VST1.16 {D22[2]},[r0,:16],r14
+ VST1.16 {D22[1]},[r0,:16],r14
+ VST1.16 {D22[0]},[r0,:16]
+s42xbily_neon_done:
+ VPOP {Q4-Q7} @ 16 words.
+ LDMFD r13!,{r4-r9,PC} @ 8 words.
+ UNWIND .fnend
+ .cfi_endproc
+ .size ScaleYCbCr42xToRGB565_BilinearY_Row_NEON, .-ScaleYCbCr42xToRGB565_BilinearY_Row_NEON
+
+#if defined(__ELF__)&&(defined(__linux__) || defined(__NetBSD__))
+ .section .note.GNU-stack,"",%progbits
+#endif
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