2 @@ Copyright (C) 2012 Roman Pauer
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4 @@ Permission is hereby granted, free of charge, to any person obtaining a copy of
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5 @@ this software and associated documentation files (the "Software"), to deal in
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6 @@ the Software without restriction, including without limitation the rights to
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7 @@ use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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8 @@ of the Software, and to permit persons to whom the Software is furnished to do
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9 @@ so, subject to the following conditions:
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11 @@ The above copyright notice and this permission notice shall be included in all
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12 @@ copies or substantial portions of the Software.
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14 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 @@ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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25 #include "neon_eagle2x.Sinc"
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26 #include "neon_normalxx.Sinc"
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28 .global neon_eagle2x_8_8
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29 .global neon_eagle2x_16_16
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30 .global neon_eagle2x_8_16
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35 @ r0 = const uint8_t *src
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37 @ r2 = unsigned int width (pixels)
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38 @ r3 = unsigned int srcstride (bytes)
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39 @ [sp] = unsigned int dststride (bytes)
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40 @ [sp+4] = unsigned int height
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41 @ lr = return address
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43 ldr ip, [sp] @ ip = dststride
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45 ldr r9, [sp, #(8*4)] @ r9 = height
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46 sub r4, r0, r3 @ r4 = src - srcstride
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47 mov r10, sp @ oldsp = sp
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48 add r5, r0, r3 @ r5 = src + srcstride
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49 bic sp, sp, #31 @ align sp to 32 bytes
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50 add r6, r1, ip @ r6 = dst + dststride
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51 sub sp, sp, #64 @ sp -= 64
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52 sub r3, r3, r2 @ r3 = srcstride - width
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53 vst1.64 {d8-d11}, [sp:256] @ save q4,q5
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54 add r7, sp, #32 @ r7 = sp + 32
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55 sub ip, ip, r2 @ ip = dststride - width
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56 vst1.64 {d12-d15}, [r7:256] @ save q6,q7
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57 lsl ip, #1 @ ip = 2 * dststride - 2 * width
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58 mov r7, r2 @ r7 = width
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59 sub r9, r9, #2 @ r9 = height - 2
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65 @ r3 = srcdiff (srcstride - width)
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66 @ r4 = src - srcstride
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67 @ r5 = src + srcstride
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68 @ r6 = dst + dststride
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73 @ ip = dstdiff (2 * dststride - 2 * width)
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76 neon_eagle2x_8_8_line first, r4, r0, r5, r7, r1, r6, r8, 0, 0
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88 neon_eagle2x_8_8_line middle, r4, r0, r5, r7, r1, r6, r8, 0, 0
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101 neon_eagle2x_8_8_line last, r4, r0, r5, r7, r1, r6, r8, 0, 0
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103 add ip, sp, #32 @ ip = sp + 32
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104 vld1.64 {d8-d11}, [sp:256] @ restore q4,q5
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105 mov sp, r10 @ sp = oldsp
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106 vld1.64 {d12-d15}, [ip:256] @ restore q6,q7
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110 @ end procedure neon_eagle2x_8_8
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113 neon_eagle2x_16_16:
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115 @ r0 = const uint16_t *src
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116 @ r1 = uint16_t *dst
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117 @ r2 = unsigned int width (pixels)
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118 @ r3 = unsigned int srcstride (bytes)
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119 @ [sp] = unsigned int dststride (bytes)
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120 @ [sp+4] = unsigned int height
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121 @ lr = return address
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123 ldr ip, [sp] @ ip = dststride
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125 ldr r9, [sp, #(8*4)] @ r9 = height
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126 sub r4, r0, r3 @ r4 = src - srcstride
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127 mov r10, sp @ oldsp = sp
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128 add r5, r0, r3 @ r5 = src + srcstride
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129 bic sp, sp, #31 @ align sp to 32 bytes
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130 add r6, r1, ip @ r6 = dst + dststride
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131 sub sp, sp, #64 @ sp -= 64
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132 sub r3, r3, r2, lsl #1 @ r3 = srcstride - 2 * width
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133 vst1.64 {d8-d11}, [sp:256] @ save q4,q5
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134 add r7, sp, #32 @ r7 = sp + 32
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135 sub ip, ip, r2, lsl #1 @ ip = dststride - 2 * width
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136 vst1.64 {d12-d15}, [r7:256] @ save q6,q7
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137 lsl ip, #1 @ ip = 2 * dststride - 4 * width
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138 mov r7, r2 @ r7 = width
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139 sub r9, r9, #2 @ r9 = height - 2
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144 @ r3 = srcdiff (srcstride - 2 * width)
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145 @ r4 = src - srcstride
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146 @ r5 = src + srcstride
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147 @ r6 = dst + dststride
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152 @ ip = dstdiff (2 * dststride - 4 * width)
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155 neon_eagle2x_16_16_line first, r4, r0, r5, r7, r1, r6, r8, 0, 0
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167 neon_eagle2x_16_16_line middle, r4, r0, r5, r7, r1, r6, r8, 0, 0
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180 neon_eagle2x_16_16_line last, r4, r0, r5, r7, r1, r6, r8, 0, 0
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182 add ip, sp, #32 @ ip = sp + 32
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183 vld1.64 {d8-d11}, [sp:256] @ restore q4,q5
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184 mov sp, r10 @ sp = oldsp
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185 vld1.64 {d12-d15}, [ip:256] @ restore q6,q7
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189 @ end procedure neon_eagle2x_16_16
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194 @ r0 = const uint8_t *src
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195 @ r1 = uint8_t *dst
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196 @ r2 = const uint32_t *palette
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197 @ r3 = unsigned int width (pixels)
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198 @ [sp] = unsigned int srcstride (bytes)
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199 @ [sp+4] = unsigned int dststride (bytes)
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200 @ [sp+8] = unsigned int height
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201 @ lr = return address
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203 @ three temporary lines
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205 ldr ip, [sp] @ ip = srcstride
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207 ldr r4, [sp, #(4*10)] @ r4 = dststride
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208 ldr r5, [sp, #(4*11)] @ r5 = height
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209 mov r6, sp @ r6 = sp
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210 sub ip, ip, r3 @ ip = srcstride - width
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211 bic sp, sp, #31 @ align sp to 32 bytes
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212 sub r7, r4, r3, lsl #1 @ r7 = dststride - 2 * width
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213 sub sp, sp, r3, lsl #1 @ sp -= 2 * width
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214 sub r5, r5, #2 @ height -= 2
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215 mov r10, sp @ tmpline3 = sp
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216 lsl r7, #1 @ r7 = 2 * dststride - 4 * width
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217 bic sp, sp, #31 @ align sp to 32 bytes
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218 sub sp, sp, r3, lsl #1 @ sp -= 2 * width
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219 mov r11, sp @ tmpline2 = sp
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220 bic sp, sp, #31 @ align sp to 32 bytes
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221 sub sp, sp, r3, lsl #1 @ sp -= 2 * width
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222 mov lr, sp @ tmpline1 = sp
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223 bic sp, sp, #31 @ align sp to 32 bytes
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224 sub r8, sp, #64 @ r8 = sp - 64
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225 vst1.64 {d8-d11}, [r8:256] @ save q4,q5
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226 sub r9, sp, #32 @ r9 = sp - 32
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227 vst1.64 {d12-d15}, [r9:256] @ save q6,q7
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228 sub sp, sp, #(36 + 64) @ sp -= (36 + 64)
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229 str r6, [sp] @ oldsp = r6
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230 str r5, [sp, #4] @ height = r5
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231 str ip, [sp, #8] @ srcdiff = ip
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232 str r7, [sp, #12] @ dstdiff = r7
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233 str r4, [sp, #16] @ dststride = r4
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234 str lr, [sp, #20] @ tmpline1 = lr
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235 str r11, [sp, #24] @ tmpline2 = r11
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236 str r10, [sp, #28] @ tmpline3 = r10
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237 str r3, [sp, #32] @ width = r3
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250 @ [sp, #4] = height
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251 @ [sp, #8] = srcdiff (srcstride - width)
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252 @ [sp, #12] = dstdiff (2 * dststride - 4 * width)
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253 @ [sp, #16] = dststride
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254 @ [sp, #20] = tmpline1
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255 @ [sp, #24] = tmpline2
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256 @ [sp, #28] = tmpline3
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257 @ [sp, #32] = width
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263 neon_normal1x_8_16_line r0, lr, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, ip
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265 ldr r7, [sp, #8] @ r7 = srcdiff
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266 ldr r3, [sp, #32] @ counter = width
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267 ldr lr, [sp, #24] @ bufptr3 = tmpline2
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268 add r0, r0, r7 @ src += srcdiff
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271 neon_normal1x_8_16_line r0, lr, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, ip
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273 ldr r9, [sp, #16] @ r9 = dststride
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274 ldr r3, [sp, #32] @ counter = width
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275 ldr ip, [sp, #20] @ bufptr2 = tmpline1
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276 ldr lr, [sp, #24] @ bufptr3 = tmpline2
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277 add r4, r1, r9 @ dst2 = dst + dststride
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279 @ first temporary line
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280 neon_eagle2x_16_16_line first, r11, ip, lr, r3, r1, r4, r5, 1, 0
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282 ldr r7, [sp, #8] @ r7 = srcdiff
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283 ldr r8, [sp, #12] @ r8 = dstdiff
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284 ldr r3, [sp, #32] @ counter = width
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285 ldr lr, [sp, #28] @ bufptr3 = tmpline3
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286 add r0, r0, r7 @ src += srcdiff
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287 add r1, r1, r8 @ dst += dstdiff
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292 neon_normal1x_8_16_line r0, lr, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, ip
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294 ldr r9, [sp, #16] @ r9 = dststride
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295 ldr r11, [sp, #20] @ bufptr1 = tmpline1
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296 ldr ip, [sp, #24] @ bufptr2 = tmpline2
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297 ldr lr, [sp, #28] @ bufptr3 = tmpline3
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298 add r4, r1, r9 @ dst2 = dst + dststride
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299 ldr r3, [sp, #32] @ counter = width
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300 str r11, [sp, #28] @ tmpline3 = bufptr1
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301 str ip, [sp, #20] @ tmpline1 = bufptr2
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302 str lr, [sp, #24] @ tmpline2 = bufptr3
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305 neon_eagle2x_16_16_line middle, r11, ip, lr, r3, r1, r4, r5, 1, 0
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307 ldr r6, [sp, #4] @ r6 = height
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308 ldr r7, [sp, #8] @ r7 = srcdiff
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309 ldr r8, [sp, #12] @ r8 = dstdiff
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310 ldr r3, [sp, #32] @ counter = width
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311 subS r6, r6, #1 @ height--
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312 ldr lr, [sp, #28] @ bufptr3 = tmpline3
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313 add r0, r0, r7 @ src += srcdiff
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314 add r1, r1, r8 @ dst += dstdiff
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315 str r6, [sp, #4] @ height = r6
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319 ldr r9, [sp, #16] @ r9 = dststride
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320 ldr r11, [sp, #20] @ bufptr1 = tmpline1
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321 ldr ip, [sp, #24] @ bufptr2 = tmpline2
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322 add r4, r1, r9 @ dst2 = dst + dststride
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324 @ last temporary line
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325 neon_eagle2x_16_16_line last, r11, ip, lr, r3, r1, r4, r5, 1, 0
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328 add r6, sp, #36 @ r6 = sp + 36
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329 ldr sp, [sp] @ sp = oldsp
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330 vld1.64 {d8-d11}, [r6:256] @ restore q4,q5
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331 add ip, r6, #32 @ ip = r6 + 32
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332 vld1.64 {d12-d15}, [ip:256] @ restore q6,q7
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336 @ end procedure neon_eagle2x_8_16
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