diff options
Diffstat (limited to 'libs/pixman-0.40.0/pixman/pixman-arm-simd-asm-scaled.S')
| -rw-r--r-- | libs/pixman-0.40.0/pixman/pixman-arm-simd-asm-scaled.S | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/libs/pixman-0.40.0/pixman/pixman-arm-simd-asm-scaled.S b/libs/pixman-0.40.0/pixman/pixman-arm-simd-asm-scaled.S deleted file mode 100644 index e050292..0000000 --- a/libs/pixman-0.40.0/pixman/pixman-arm-simd-asm-scaled.S +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Copyright © 2008 Mozilla Corporation - * Copyright © 2010 Nokia Corporation - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of Mozilla Corporation not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Mozilla Corporation makes no - * representations about the suitability of this software for any purpose. It - * is provided "as is" without express or implied warranty. - * - * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS - * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY - * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN - * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING - * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - * - * Author: Jeff Muizelaar (jeff@infidigm.net) - * - */ - -/* Prevent the stack from becoming executable */ -#if defined(__linux__) && defined(__ELF__) -.section .note.GNU-stack,"",%progbits -#endif - - .text - .arch armv6 - .object_arch armv4 - .arm - .altmacro - .p2align 2 - -#include "pixman-arm-asm.h" - -/* - * Note: This code is only using armv5te instructions (not even armv6), - * but is scheduled for ARM Cortex-A8 pipeline. So it might need to - * be split into a few variants, tuned for each microarchitecture. - * - * TODO: In order to get good performance on ARM9/ARM11 cores (which don't - * have efficient write combining), it needs to be changed to use 16-byte - * aligned writes using STM instruction. - * - * Nearest scanline scaler macro template uses the following arguments: - * fname - name of the function to generate - * bpp_shift - (1 << bpp_shift) is the size of pixel in bytes - * t - type suffix for LDR/STR instructions - * prefetch_distance - prefetch in the source image by that many - * pixels ahead - * prefetch_braking_distance - stop prefetching when that many pixels are - * remaining before the end of scanline - */ - -.macro generate_nearest_scanline_func fname, bpp_shift, t, \ - prefetch_distance, \ - prefetch_braking_distance - -pixman_asm_function fname - W .req r0 - DST .req r1 - SRC .req r2 - VX .req r3 - UNIT_X .req ip - TMP1 .req r4 - TMP2 .req r5 - VXMASK .req r6 - PF_OFFS .req r7 - SRC_WIDTH_FIXED .req r8 - - ldr UNIT_X, [sp] - push {r4, r5, r6, r7, r8, r10} - mvn VXMASK, #((1 << bpp_shift) - 1) - ldr SRC_WIDTH_FIXED, [sp, #28] - - /* define helper macro */ - .macro scale_2_pixels - ldr&t TMP1, [SRC, TMP1] - and TMP2, VXMASK, VX, asr #(16 - bpp_shift) - adds VX, VX, UNIT_X - str&t TMP1, [DST], #(1 << bpp_shift) -9: subpls VX, VX, SRC_WIDTH_FIXED - bpl 9b - - ldr&t TMP2, [SRC, TMP2] - and TMP1, VXMASK, VX, asr #(16 - bpp_shift) - adds VX, VX, UNIT_X - str&t TMP2, [DST], #(1 << bpp_shift) -9: subpls VX, VX, SRC_WIDTH_FIXED - bpl 9b - .endm - - /* now do the scaling */ - and TMP1, VXMASK, VX, asr #(16 - bpp_shift) - adds VX, VX, UNIT_X -9: subpls VX, VX, SRC_WIDTH_FIXED - bpl 9b - subs W, W, #(8 + prefetch_braking_distance) - blt 2f - /* calculate prefetch offset */ - mov PF_OFFS, #prefetch_distance - mla PF_OFFS, UNIT_X, PF_OFFS, VX -1: /* main loop, process 8 pixels per iteration with prefetch */ - pld [SRC, PF_OFFS, asr #(16 - bpp_shift)] - add PF_OFFS, UNIT_X, lsl #3 - scale_2_pixels - scale_2_pixels - scale_2_pixels - scale_2_pixels - subs W, W, #8 - bge 1b -2: - subs W, W, #(4 - 8 - prefetch_braking_distance) - blt 2f -1: /* process the remaining pixels */ - scale_2_pixels - scale_2_pixels - subs W, W, #4 - bge 1b -2: - tst W, #2 - beq 2f - scale_2_pixels -2: - tst W, #1 - ldrne&t TMP1, [SRC, TMP1] - strne&t TMP1, [DST] - /* cleanup helper macro */ - .purgem scale_2_pixels - .unreq DST - .unreq SRC - .unreq W - .unreq VX - .unreq UNIT_X - .unreq TMP1 - .unreq TMP2 - .unreq VXMASK - .unreq PF_OFFS - .unreq SRC_WIDTH_FIXED - /* return */ - pop {r4, r5, r6, r7, r8, r10} - bx lr -.endfunc -.endm - -generate_nearest_scanline_func \ - pixman_scaled_nearest_scanline_0565_0565_SRC_asm_armv6, 1, h, 80, 32 - -generate_nearest_scanline_func \ - pixman_scaled_nearest_scanline_8888_8888_SRC_asm_armv6, 2, , 48, 32 |