|
- @
- @ ARMv4 optimized DSP utils
- @ Copyright (c) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
- @
- @ This file is part of Libav.
- @
- @ Libav is free software; you can redistribute it and/or
- @ modify it under the terms of the GNU Lesser General Public
- @ License as published by the Free Software Foundation; either
- @ version 2.1 of the License, or (at your option) any later version.
- @
- @ Libav is distributed in the hope that it will be useful,
- @ but WITHOUT ANY WARRANTY; without even the implied warranty of
- @ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- @ Lesser General Public License for more details.
- @
- @ You should have received a copy of the GNU Lesser General Public
- @ License along with Libav; if not, write to the Free Software
- @ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- @
-
- #include "config.h"
- #include "libavutil/arm/asm.S"
-
- #if HAVE_ARMV5TE
- function ff_prefetch_arm, export=1
- subs r2, r2, #1
- pld [r0]
- add r0, r0, r1
- bne ff_prefetch_arm
- bx lr
- endfunc
- #else
- #define pld @
- #endif
-
- .macro ALIGN_QWORD_D shift, Rd0, Rd1, Rd2, Rd3, Rn0, Rn1, Rn2, Rn3, Rn4
- mov \Rd0, \Rn0, lsr #(\shift * 8)
- mov \Rd1, \Rn1, lsr #(\shift * 8)
- mov \Rd2, \Rn2, lsr #(\shift * 8)
- mov \Rd3, \Rn3, lsr #(\shift * 8)
- orr \Rd0, \Rd0, \Rn1, lsl #(32 - \shift * 8)
- orr \Rd1, \Rd1, \Rn2, lsl #(32 - \shift * 8)
- orr \Rd2, \Rd2, \Rn3, lsl #(32 - \shift * 8)
- orr \Rd3, \Rd3, \Rn4, lsl #(32 - \shift * 8)
- .endm
- .macro ALIGN_DWORD shift, R0, R1, R2
- mov \R0, \R0, lsr #(\shift * 8)
- orr \R0, \R0, \R1, lsl #(32 - \shift * 8)
- mov \R1, \R1, lsr #(\shift * 8)
- orr \R1, \R1, \R2, lsl #(32 - \shift * 8)
- .endm
- .macro ALIGN_DWORD_D shift, Rdst0, Rdst1, Rsrc0, Rsrc1, Rsrc2
- mov \Rdst0, \Rsrc0, lsr #(\shift * 8)
- mov \Rdst1, \Rsrc1, lsr #(\shift * 8)
- orr \Rdst0, \Rdst0, \Rsrc1, lsl #(32 - (\shift * 8))
- orr \Rdst1, \Rdst1, \Rsrc2, lsl #(32 - (\shift * 8))
- .endm
-
- .macro RND_AVG32 Rd0, Rd1, Rn0, Rn1, Rm0, Rm1, Rmask
- @ Rd = (Rn | Rm) - (((Rn ^ Rm) & ~0x01010101) >> 1)
- @ Rmask = 0xFEFEFEFE
- @ Rn = destroy
- eor \Rd0, \Rn0, \Rm0
- eor \Rd1, \Rn1, \Rm1
- orr \Rn0, \Rn0, \Rm0
- orr \Rn1, \Rn1, \Rm1
- and \Rd0, \Rd0, \Rmask
- and \Rd1, \Rd1, \Rmask
- sub \Rd0, \Rn0, \Rd0, lsr #1
- sub \Rd1, \Rn1, \Rd1, lsr #1
- .endm
-
- .macro NO_RND_AVG32 Rd0, Rd1, Rn0, Rn1, Rm0, Rm1, Rmask
- @ Rd = (Rn & Rm) - (((Rn ^ Rm) & ~0x01010101) >> 1)
- @ Rmask = 0xFEFEFEFE
- @ Rn = destroy
- eor \Rd0, \Rn0, \Rm0
- eor \Rd1, \Rn1, \Rm1
- and \Rn0, \Rn0, \Rm0
- and \Rn1, \Rn1, \Rm1
- and \Rd0, \Rd0, \Rmask
- and \Rd1, \Rd1, \Rmask
- add \Rd0, \Rn0, \Rd0, lsr #1
- add \Rd1, \Rn1, \Rd1, lsr #1
- .endm
-
- .macro JMP_ALIGN tmp, reg
- ands \tmp, \reg, #3
- bic \reg, \reg, #3
- beq 1f
- subs \tmp, \tmp, #1
- beq 2f
- subs \tmp, \tmp, #1
- beq 3f
- b 4f
- .endm
-
- @ ----------------------------------------------------------------
- .align 5
- function ff_put_pixels16_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:
- ldm r1, {r4-r7}
- add r1, r1, r2
- stm r0, {r4-r7}
- pld [r1]
- subs r3, r3, #1
- add r0, r0, r2
- bne 1b
- pop {r4-r11, pc}
- .align 5
- 2:
- ldm r1, {r4-r8}
- add r1, r1, r2
- ALIGN_QWORD_D 1, r9, r10, r11, r12, r4, r5, r6, r7, r8
- pld [r1]
- subs r3, r3, #1
- stm r0, {r9-r12}
- add r0, r0, r2
- bne 2b
- pop {r4-r11, pc}
- .align 5
- 3:
- ldm r1, {r4-r8}
- add r1, r1, r2
- ALIGN_QWORD_D 2, r9, r10, r11, r12, r4, r5, r6, r7, r8
- pld [r1]
- subs r3, r3, #1
- stm r0, {r9-r12}
- add r0, r0, r2
- bne 3b
- pop {r4-r11, pc}
- .align 5
- 4:
- ldm r1, {r4-r8}
- add r1, r1, r2
- ALIGN_QWORD_D 3, r9, r10, r11, r12, r4, r5, r6, r7, r8
- pld [r1]
- subs r3, r3, #1
- stm r0, {r9-r12}
- add r0, r0, r2
- bne 4b
- pop {r4-r11,pc}
- endfunc
-
- @ ----------------------------------------------------------------
- .align 5
- function ff_put_pixels8_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-r5,lr}
- JMP_ALIGN r5, r1
- 1:
- ldm r1, {r4-r5}
- add r1, r1, r2
- subs r3, r3, #1
- pld [r1]
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 1b
- pop {r4-r5,pc}
- .align 5
- 2:
- ldm r1, {r4-r5, r12}
- add r1, r1, r2
- ALIGN_DWORD 1, r4, r5, r12
- pld [r1]
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 2b
- pop {r4-r5,pc}
- .align 5
- 3:
- ldm r1, {r4-r5, r12}
- add r1, r1, r2
- ALIGN_DWORD 2, r4, r5, r12
- pld [r1]
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 3b
- pop {r4-r5,pc}
- .align 5
- 4:
- ldm r1, {r4-r5, r12}
- add r1, r1, r2
- ALIGN_DWORD 3, r4, r5, r12
- pld [r1]
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 4b
- pop {r4-r5,pc}
- endfunc
-
- @ ----------------------------------------------------------------
- .align 5
- function ff_put_pixels8_x2_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-r10,lr}
- ldr r12, =0xfefefefe
- JMP_ALIGN r5, r1
- 1:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
- pld [r1]
- RND_AVG32 r8, r9, r4, r5, r6, r7, r12
- subs r3, r3, #1
- stm r0, {r8-r9}
- add r0, r0, r2
- bne 1b
- pop {r4-r10,pc}
- .align 5
- 2:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
- ALIGN_DWORD_D 2, r8, r9, r4, r5, r10
- pld [r1]
- RND_AVG32 r4, r5, r6, r7, r8, r9, r12
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 2b
- pop {r4-r10,pc}
- .align 5
- 3:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 2, r6, r7, r4, r5, r10
- ALIGN_DWORD_D 3, r8, r9, r4, r5, r10
- pld [r1]
- RND_AVG32 r4, r5, r6, r7, r8, r9, r12
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 3b
- pop {r4-r10,pc}
- .align 5
- 4:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 3, r6, r7, r4, r5, r10
- pld [r1]
- RND_AVG32 r8, r9, r6, r7, r5, r10, r12
- subs r3, r3, #1
- stm r0, {r8-r9}
- add r0, r0, r2
- bne 4b
- pop {r4-r10,pc}
- endfunc
-
- .align 5
- function ff_put_no_rnd_pixels8_x2_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-r10,lr}
- ldr r12, =0xfefefefe
- JMP_ALIGN r5, r1
- 1:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
- pld [r1]
- NO_RND_AVG32 r8, r9, r4, r5, r6, r7, r12
- subs r3, r3, #1
- stm r0, {r8-r9}
- add r0, r0, r2
- bne 1b
- pop {r4-r10,pc}
- .align 5
- 2:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 1, r6, r7, r4, r5, r10
- ALIGN_DWORD_D 2, r8, r9, r4, r5, r10
- pld [r1]
- NO_RND_AVG32 r4, r5, r6, r7, r8, r9, r12
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 2b
- pop {r4-r10,pc}
- .align 5
- 3:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 2, r6, r7, r4, r5, r10
- ALIGN_DWORD_D 3, r8, r9, r4, r5, r10
- pld [r1]
- NO_RND_AVG32 r4, r5, r6, r7, r8, r9, r12
- subs r3, r3, #1
- stm r0, {r4-r5}
- add r0, r0, r2
- bne 3b
- pop {r4-r10,pc}
- .align 5
- 4:
- ldm r1, {r4-r5, r10}
- add r1, r1, r2
- ALIGN_DWORD_D 3, r6, r7, r4, r5, r10
- pld [r1]
- NO_RND_AVG32 r8, r9, r6, r7, r5, r10, r12
- subs r3, r3, #1
- stm r0, {r8-r9}
- add r0, r0, r2
- bne 4b
- pop {r4-r10,pc}
- endfunc
-
-
- @ ----------------------------------------------------------------
- .align 5
- function ff_put_pixels8_y2_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}
- mov r3, r3, lsr #1
- ldr r12, =0xfefefefe
- JMP_ALIGN r5, r1
- 1:
- ldm r1, {r4-r5}
- add r1, r1, r2
- 6: ldm r1, {r6-r7}
- add r1, r1, r2
- pld [r1]
- 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]
- 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
- 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
- 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
- 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
- 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
- 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
- RND_AVG32 r10, r11, r7, r8, r4, r5, r12
- stm r0, {r10-r11}
- add r0, r0, r2
- bne 6b
- pop {r4-r11,pc}
- endfunc
-
- .align 5
- function ff_put_no_rnd_pixels8_y2_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}
- mov r3, r3, lsr #1
- ldr r12, =0xfefefefe
- JMP_ALIGN r5, r1
- 1:
- ldm r1, {r4-r5}
- 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
- it eq
- andeq r14, r14, r14, \rnd #1
- add r8, r8, r10
- add r9, r9, r11
- ldr r12, =0xfcfcfcfc >> 2
- itt eq
- 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, r6, r5
- add r8, r7, r8, lsr #8
- mvn r5, r5
- mvn r7, r7
- tst r6, #0x100
- it ne
- movne r6, r5, lsr #24
- tst r8, #0x100
- it ne
- 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
- it ne
- movne r6, r5, lsr #24
- tst r8, #0x100
- it ne
- 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, r6, r5
- add r8, r7, r8, lsr #8
- mvn r5, r5
- mvn r7, r7
- tst r6, #0x100
- it ne
- movne r6, r5, lsr #24
- tst r8, #0x100
- it ne
- 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
- it ne
- movne r6, r5, lsr #24
- tst r8, #0x100
- it ne
- 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
|
