713 lines
24 KiB
ArmAsm
713 lines
24 KiB
ArmAsm
@
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@ ARMv4 optimized DSP utils
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@ Copyright (c) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
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@
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@ This file is part of FFmpeg.
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@
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@ FFmpeg is free software; you can redistribute it and/or
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@ modify it under the terms of the GNU Lesser General Public
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@ License as published by the Free Software Foundation; either
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@ version 2.1 of the License, or (at your option) any later version.
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@
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@ FFmpeg is distributed in the hope that it will be useful,
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@ but WITHOUT ANY WARRANTY; without even the implied warranty of
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@ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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@ Lesser General Public License for more details.
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@
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@ You should have received a copy of the GNU Lesser General Public
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@ License along with FFmpeg; if not, write to the Free Software
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@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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@
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#include "config.h"
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#include "asm.S"
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preserve8
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#if !HAVE_PLD
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.macro pld reg
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.endm
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#endif
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#if HAVE_ARMV5TE
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function ff_prefetch_arm, export=1
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subs r2, r2, #1
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pld [r0]
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add r0, r0, r1
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bne ff_prefetch_arm
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bx lr
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.endfunc
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#endif
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.macro ALIGN_QWORD_D shift, Rd0, Rd1, Rd2, Rd3, Rn0, Rn1, Rn2, Rn3, Rn4
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mov \Rd0, \Rn0, lsr #(\shift * 8)
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mov \Rd1, \Rn1, lsr #(\shift * 8)
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mov \Rd2, \Rn2, lsr #(\shift * 8)
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mov \Rd3, \Rn3, lsr #(\shift * 8)
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orr \Rd0, \Rd0, \Rn1, lsl #(32 - \shift * 8)
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orr \Rd1, \Rd1, \Rn2, lsl #(32 - \shift * 8)
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orr \Rd2, \Rd2, \Rn3, lsl #(32 - \shift * 8)
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orr \Rd3, \Rd3, \Rn4, lsl #(32 - \shift * 8)
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.endm
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.macro ALIGN_DWORD shift, R0, R1, R2
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mov \R0, \R0, lsr #(\shift * 8)
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orr \R0, \R0, \R1, lsl #(32 - \shift * 8)
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mov \R1, \R1, lsr #(\shift * 8)
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orr \R1, \R1, \R2, lsl #(32 - \shift * 8)
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.endm
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.macro ALIGN_DWORD_D shift, Rdst0, Rdst1, Rsrc0, Rsrc1, Rsrc2
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mov \Rdst0, \Rsrc0, lsr #(\shift * 8)
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mov \Rdst1, \Rsrc1, lsr #(\shift * 8)
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orr \Rdst0, \Rdst0, \Rsrc1, lsl #(32 - (\shift * 8))
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orr \Rdst1, \Rdst1, \Rsrc2, lsl #(32 - (\shift * 8))
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.endm
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.macro RND_AVG32 Rd0, Rd1, Rn0, Rn1, Rm0, Rm1, Rmask
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@ Rd = (Rn | Rm) - (((Rn ^ Rm) & ~0x01010101) >> 1)
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@ Rmask = 0xFEFEFEFE
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@ Rn = destroy
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eor \Rd0, \Rn0, \Rm0
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eor \Rd1, \Rn1, \Rm1
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orr \Rn0, \Rn0, \Rm0
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orr \Rn1, \Rn1, \Rm1
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and \Rd0, \Rd0, \Rmask
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and \Rd1, \Rd1, \Rmask
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sub \Rd0, \Rn0, \Rd0, lsr #1
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sub \Rd1, \Rn1, \Rd1, lsr #1
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.endm
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.macro NO_RND_AVG32 Rd0, Rd1, Rn0, Rn1, Rm0, Rm1, Rmask
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@ Rd = (Rn & Rm) - (((Rn ^ Rm) & ~0x01010101) >> 1)
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@ Rmask = 0xFEFEFEFE
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@ Rn = destroy
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eor \Rd0, \Rn0, \Rm0
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eor \Rd1, \Rn1, \Rm1
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and \Rn0, \Rn0, \Rm0
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and \Rn1, \Rn1, \Rm1
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and \Rd0, \Rd0, \Rmask
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and \Rd1, \Rd1, \Rmask
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add \Rd0, \Rn0, \Rd0, lsr #1
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add \Rd1, \Rn1, \Rd1, lsr #1
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.endm
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.macro JMP_ALIGN tmp, reg
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ands \tmp, \reg, #3
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bic \reg, \reg, #3
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beq 1f
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subs \tmp, \tmp, #1
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beq 2f
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subs \tmp, \tmp, #1
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beq 3f
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b 4f
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.endm
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@ ----------------------------------------------------------------
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.align 5
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function ff_put_pixels16_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r11, lr}
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r7}
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add r1, r1, r2
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stm r0, {r4-r7}
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pld [r1]
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subs r3, r3, #1
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add r0, r0, r2
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bne 1b
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pop {r4-r11, pc}
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.align 5
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2:
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ldm r1, {r4-r8}
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add r1, r1, r2
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ALIGN_QWORD_D 1, r9, r10, r11, r12, r4, r5, r6, r7, r8
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pld [r1]
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subs r3, r3, #1
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stm r0, {r9-r12}
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add r0, r0, r2
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bne 2b
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pop {r4-r11, pc}
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.align 5
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3:
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ldm r1, {r4-r8}
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add r1, r1, r2
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ALIGN_QWORD_D 2, r9, r10, r11, r12, r4, r5, r6, r7, r8
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pld [r1]
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subs r3, r3, #1
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stm r0, {r9-r12}
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add r0, r0, r2
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bne 3b
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pop {r4-r11, pc}
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.align 5
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4:
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ldm r1, {r4-r8}
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add r1, r1, r2
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ALIGN_QWORD_D 3, r9, r10, r11, r12, r4, r5, r6, r7, r8
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pld [r1]
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subs r3, r3, #1
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stm r0, {r9-r12}
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add r0, r0, r2
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bne 4b
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pop {r4-r11,pc}
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.endfunc
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@ ----------------------------------------------------------------
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.align 5
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function ff_put_pixels8_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r5,lr}
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r5}
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add r1, r1, r2
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subs r3, r3, #1
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pld [r1]
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 1b
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pop {r4-r5,pc}
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.align 5
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2:
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ldm r1, {r4-r5, r12}
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add r1, r1, r2
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ALIGN_DWORD 1, r4, r5, r12
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pld [r1]
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 2b
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pop {r4-r5,pc}
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.align 5
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3:
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ldm r1, {r4-r5, r12}
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add r1, r1, r2
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ALIGN_DWORD 2, r4, r5, r12
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pld [r1]
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 3b
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pop {r4-r5,pc}
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.align 5
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4:
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ldm r1, {r4-r5, r12}
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add r1, r1, r2
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ALIGN_DWORD 3, r4, r5, r12
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pld [r1]
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 4b
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pop {r4-r5,pc}
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.endfunc
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@ ----------------------------------------------------------------
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.align 5
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function ff_put_pixels8_x2_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r10,lr}
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ldr r12, =0xfefefefe
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
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pld [r1]
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RND_AVG32 r8, r9, r4, r5, r6, r7, r12
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subs r3, r3, #1
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stm r0, {r8-r9}
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add r0, r0, r2
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bne 1b
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pop {r4-r10,pc}
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.align 5
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2:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
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ALIGN_DWORD_D 2, r8, r9, r4, r5, r10
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pld [r1]
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RND_AVG32 r4, r5, r6, r7, r8, r9, r12
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 2b
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pop {r4-r10,pc}
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.align 5
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3:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 2, r6, r7, r4, r5, r10
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ALIGN_DWORD_D 3, r8, r9, r4, r5, r10
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pld [r1]
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RND_AVG32 r4, r5, r6, r7, r8, r9, r12
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 3b
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pop {r4-r10,pc}
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.align 5
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4:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 3, r6, r7, r4, r5, r10
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pld [r1]
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RND_AVG32 r8, r9, r6, r7, r5, r10, r12
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subs r3, r3, #1
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stm r0, {r8-r9}
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add r0, r0, r2
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bne 4b
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pop {r4-r10,pc}
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.endfunc
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.align 5
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function ff_put_no_rnd_pixels8_x2_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r10,lr}
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ldr r12, =0xfefefefe
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
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pld [r1]
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NO_RND_AVG32 r8, r9, r4, r5, r6, r7, r12
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subs r3, r3, #1
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stm r0, {r8-r9}
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add r0, r0, r2
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bne 1b
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pop {r4-r10,pc}
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.align 5
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2:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
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ALIGN_DWORD_D 2, r8, r9, r4, r5, r10
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pld [r1]
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NO_RND_AVG32 r4, r5, r6, r7, r8, r9, r12
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 2b
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pop {r4-r10,pc}
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.align 5
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3:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 2, r6, r7, r4, r5, r10
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ALIGN_DWORD_D 3, r8, r9, r4, r5, r10
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pld [r1]
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NO_RND_AVG32 r4, r5, r6, r7, r8, r9, r12
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subs r3, r3, #1
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stm r0, {r4-r5}
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add r0, r0, r2
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bne 3b
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pop {r4-r10,pc}
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.align 5
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4:
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ldm r1, {r4-r5, r10}
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add r1, r1, r2
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ALIGN_DWORD_D 3, r6, r7, r4, r5, r10
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pld [r1]
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NO_RND_AVG32 r8, r9, r6, r7, r5, r10, r12
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subs r3, r3, #1
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stm r0, {r8-r9}
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add r0, r0, r2
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bne 4b
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pop {r4-r10,pc}
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.endfunc
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@ ----------------------------------------------------------------
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.align 5
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function ff_put_pixels8_y2_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r11,lr}
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mov r3, r3, lsr #1
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ldr r12, =0xfefefefe
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r5}
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add r1, r1, r2
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6: ldm r1, {r6-r7}
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add r1, r1, r2
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pld [r1]
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RND_AVG32 r8, r9, r4, r5, r6, r7, r12
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ldm r1, {r4-r5}
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add r1, r1, r2
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stm r0, {r8-r9}
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add r0, r0, r2
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pld [r1]
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RND_AVG32 r8, r9, r6, r7, r4, r5, r12
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subs r3, r3, #1
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stm r0, {r8-r9}
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add r0, r0, r2
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bne 6b
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pop {r4-r11,pc}
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.align 5
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2:
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 1, r4, r5, r6
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6: ldm r1, {r7-r9}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 1, r7, r8, r9
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RND_AVG32 r10, r11, r4, r5, r7, r8, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 1, r4, r5, r6
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subs r3, r3, #1
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RND_AVG32 r10, r11, r7, r8, r4, r5, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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bne 6b
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pop {r4-r11,pc}
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.align 5
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3:
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 2, r4, r5, r6
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6: ldm r1, {r7-r9}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 2, r7, r8, r9
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RND_AVG32 r10, r11, r4, r5, r7, r8, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 2, r4, r5, r6
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subs r3, r3, #1
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RND_AVG32 r10, r11, r7, r8, r4, r5, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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bne 6b
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pop {r4-r11,pc}
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.align 5
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4:
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 3, r4, r5, r6
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6: ldm r1, {r7-r9}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 3, r7, r8, r9
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RND_AVG32 r10, r11, r4, r5, r7, r8, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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ldm r1, {r4-r6}
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add r1, r1, r2
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pld [r1]
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ALIGN_DWORD 3, r4, r5, r6
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subs r3, r3, #1
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RND_AVG32 r10, r11, r7, r8, r4, r5, r12
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stm r0, {r10-r11}
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add r0, r0, r2
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bne 6b
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pop {r4-r11,pc}
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.endfunc
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.align 5
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function ff_put_no_rnd_pixels8_y2_arm, export=1
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@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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@ block = word aligned, pixles = unaligned
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pld [r1]
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push {r4-r11,lr}
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mov r3, r3, lsr #1
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ldr r12, =0xfefefefe
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JMP_ALIGN r5, r1
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1:
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ldm r1, {r4-r5}
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add r1, r1, r2
|
|
6: ldm r1, {r6-r7}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
NO_RND_AVG32 r8, r9, r4, r5, r6, r7, r12
|
|
ldm r1, {r4-r5}
|
|
add r1, r1, r2
|
|
stm r0, {r8-r9}
|
|
add r0, r0, r2
|
|
pld [r1]
|
|
NO_RND_AVG32 r8, r9, r6, r7, r4, r5, r12
|
|
subs r3, r3, #1
|
|
stm r0, {r8-r9}
|
|
add r0, r0, r2
|
|
bne 6b
|
|
pop {r4-r11,pc}
|
|
.align 5
|
|
2:
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 1, r4, r5, r6
|
|
6: ldm r1, {r7-r9}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 1, r7, r8, r9
|
|
NO_RND_AVG32 r10, r11, r4, r5, r7, r8, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 1, r4, r5, r6
|
|
subs r3, r3, #1
|
|
NO_RND_AVG32 r10, r11, r7, r8, r4, r5, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
bne 6b
|
|
pop {r4-r11,pc}
|
|
.align 5
|
|
3:
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 2, r4, r5, r6
|
|
6: ldm r1, {r7-r9}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 2, r7, r8, r9
|
|
NO_RND_AVG32 r10, r11, r4, r5, r7, r8, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 2, r4, r5, r6
|
|
subs r3, r3, #1
|
|
NO_RND_AVG32 r10, r11, r7, r8, r4, r5, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
bne 6b
|
|
pop {r4-r11,pc}
|
|
.align 5
|
|
4:
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 3, r4, r5, r6
|
|
6: ldm r1, {r7-r9}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 3, r7, r8, r9
|
|
NO_RND_AVG32 r10, r11, r4, r5, r7, r8, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
ldm r1, {r4-r6}
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
ALIGN_DWORD 3, r4, r5, r6
|
|
subs r3, r3, #1
|
|
NO_RND_AVG32 r10, r11, r7, r8, r4, r5, r12
|
|
stm r0, {r10-r11}
|
|
add r0, r0, r2
|
|
bne 6b
|
|
pop {r4-r11,pc}
|
|
.endfunc
|
|
|
|
.ltorg
|
|
|
|
@ ----------------------------------------------------------------
|
|
.macro RND_XY2_IT align, rnd
|
|
@ l1= (a & 0x03030303) + (b & 0x03030303) ?(+ 0x02020202)
|
|
@ h1= ((a & 0xFCFCFCFCUL) >> 2) + ((b & 0xFCFCFCFCUL) >> 2)
|
|
.if \align == 0
|
|
ldm r1, {r6-r8}
|
|
.elseif \align == 3
|
|
ldm r1, {r5-r7}
|
|
.else
|
|
ldm r1, {r8-r10}
|
|
.endif
|
|
add r1, r1, r2
|
|
pld [r1]
|
|
.if \align == 0
|
|
ALIGN_DWORD_D 1, r4, r5, r6, r7, r8
|
|
.elseif \align == 1
|
|
ALIGN_DWORD_D 1, r4, r5, r8, r9, r10
|
|
ALIGN_DWORD_D 2, r6, r7, r8, r9, r10
|
|
.elseif \align == 2
|
|
ALIGN_DWORD_D 2, r4, r5, r8, r9, r10
|
|
ALIGN_DWORD_D 3, r6, r7, r8, r9, r10
|
|
.elseif \align == 3
|
|
ALIGN_DWORD_D 3, r4, r5, r5, r6, r7
|
|
.endif
|
|
ldr r14, =0x03030303
|
|
tst r3, #1
|
|
and r8, r4, r14
|
|
and r9, r5, r14
|
|
and r10, r6, r14
|
|
and r11, r7, r14
|
|
andeq r14, r14, r14, \rnd #1
|
|
add r8, r8, r10
|
|
add r9, r9, r11
|
|
ldr r12, =0xfcfcfcfc >> 2
|
|
addeq r8, r8, r14
|
|
addeq r9, r9, r14
|
|
and r4, r12, r4, lsr #2
|
|
and r5, r12, r5, lsr #2
|
|
and r6, r12, r6, lsr #2
|
|
and r7, r12, r7, lsr #2
|
|
add r10, r4, r6
|
|
add r11, r5, r7
|
|
subs r3, r3, #1
|
|
.endm
|
|
|
|
.macro RND_XY2_EXPAND align, rnd
|
|
RND_XY2_IT \align, \rnd
|
|
6: push {r8-r11}
|
|
RND_XY2_IT \align, \rnd
|
|
pop {r4-r7}
|
|
add r4, r4, r8
|
|
add r5, r5, r9
|
|
ldr r14, =0x0f0f0f0f
|
|
add r6, r6, r10
|
|
add r7, r7, r11
|
|
and r4, r14, r4, lsr #2
|
|
and r5, r14, r5, lsr #2
|
|
add r4, r4, r6
|
|
add r5, r5, r7
|
|
stm r0, {r4-r5}
|
|
add r0, r0, r2
|
|
bge 6b
|
|
pop {r4-r11,pc}
|
|
.endm
|
|
|
|
.align 5
|
|
function ff_put_pixels8_xy2_arm, export=1
|
|
@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
|
|
@ block = word aligned, pixles = unaligned
|
|
pld [r1]
|
|
push {r4-r11,lr} @ R14 is also called LR
|
|
JMP_ALIGN r5, r1
|
|
1: RND_XY2_EXPAND 0, lsl
|
|
.align 5
|
|
2: RND_XY2_EXPAND 1, lsl
|
|
.align 5
|
|
3: RND_XY2_EXPAND 2, lsl
|
|
.align 5
|
|
4: RND_XY2_EXPAND 3, lsl
|
|
.endfunc
|
|
|
|
.align 5
|
|
function ff_put_no_rnd_pixels8_xy2_arm, export=1
|
|
@ void func(uint8_t *block, const uint8_t *pixels, int line_size, int h)
|
|
@ block = word aligned, pixles = unaligned
|
|
pld [r1]
|
|
push {r4-r11,lr}
|
|
JMP_ALIGN r5, r1
|
|
1: RND_XY2_EXPAND 0, lsr
|
|
.align 5
|
|
2: RND_XY2_EXPAND 1, lsr
|
|
.align 5
|
|
3: RND_XY2_EXPAND 2, lsr
|
|
.align 5
|
|
4: RND_XY2_EXPAND 3, lsr
|
|
.endfunc
|
|
|
|
.align 5
|
|
@ void ff_add_pixels_clamped_arm(int16_t *block, uint8_t *dest, int stride)
|
|
function ff_add_pixels_clamped_arm, export=1
|
|
push {r4-r10}
|
|
mov r10, #8
|
|
1:
|
|
ldr r4, [r1] /* load dest */
|
|
/* block[0] and block[1]*/
|
|
ldrsh r5, [r0]
|
|
ldrsh r7, [r0, #2]
|
|
and r6, r4, #0xFF
|
|
and r8, r4, #0xFF00
|
|
add r6, r5, r6
|
|
add r8, r7, r8, lsr #8
|
|
mvn r5, r5
|
|
mvn r7, r7
|
|
tst r6, #0x100
|
|
movne r6, r5, lsr #24
|
|
tst r8, #0x100
|
|
movne r8, r7, lsr #24
|
|
mov r9, r6
|
|
ldrsh r5, [r0, #4] /* moved form [A] */
|
|
orr r9, r9, r8, lsl #8
|
|
/* block[2] and block[3] */
|
|
/* [A] */
|
|
ldrsh r7, [r0, #6]
|
|
and r6, r4, #0xFF0000
|
|
and r8, r4, #0xFF000000
|
|
add r6, r5, r6, lsr #16
|
|
add r8, r7, r8, lsr #24
|
|
mvn r5, r5
|
|
mvn r7, r7
|
|
tst r6, #0x100
|
|
movne r6, r5, lsr #24
|
|
tst r8, #0x100
|
|
movne r8, r7, lsr #24
|
|
orr r9, r9, r6, lsl #16
|
|
ldr r4, [r1, #4] /* moved form [B] */
|
|
orr r9, r9, r8, lsl #24
|
|
/* store dest */
|
|
ldrsh r5, [r0, #8] /* moved form [C] */
|
|
str r9, [r1]
|
|
|
|
/* load dest */
|
|
/* [B] */
|
|
/* block[4] and block[5] */
|
|
/* [C] */
|
|
ldrsh r7, [r0, #10]
|
|
and r6, r4, #0xFF
|
|
and r8, r4, #0xFF00
|
|
add r6, r5, r6
|
|
add r8, r7, r8, lsr #8
|
|
mvn r5, r5
|
|
mvn r7, r7
|
|
tst r6, #0x100
|
|
movne r6, r5, lsr #24
|
|
tst r8, #0x100
|
|
movne r8, r7, lsr #24
|
|
mov r9, r6
|
|
ldrsh r5, [r0, #12] /* moved from [D] */
|
|
orr r9, r9, r8, lsl #8
|
|
/* block[6] and block[7] */
|
|
/* [D] */
|
|
ldrsh r7, [r0, #14]
|
|
and r6, r4, #0xFF0000
|
|
and r8, r4, #0xFF000000
|
|
add r6, r5, r6, lsr #16
|
|
add r8, r7, r8, lsr #24
|
|
mvn r5, r5
|
|
mvn r7, r7
|
|
tst r6, #0x100
|
|
movne r6, r5, lsr #24
|
|
tst r8, #0x100
|
|
movne r8, r7, lsr #24
|
|
orr r9, r9, r6, lsl #16
|
|
add r0, r0, #16 /* moved from [E] */
|
|
orr r9, r9, r8, lsl #24
|
|
subs r10, r10, #1 /* moved from [F] */
|
|
/* store dest */
|
|
str r9, [r1, #4]
|
|
|
|
/* [E] */
|
|
/* [F] */
|
|
add r1, r1, r2
|
|
bne 1b
|
|
|
|
pop {r4-r10}
|
|
bx lr
|
|
.endfunc
|