* See COPYING file in the top-level directory.
*/
-.global memcpy16 @ unsigned short *dest, unsigned short *src, int count
-
-memcpy16:
- eor r3, r0, r1
- tst r3, #2
- bne mcp16_cant_align
-
- tst r0, #2
- ldrneh r3, [r1], #2
- subne r2, r2, #1
- strneh r3, [r0], #2
-
- subs r2, r2, #4
- bmi mcp16_fin
-
-mcp16_loop:
- ldmia r1!, {r3,r12}
- subs r2, r2, #4
- stmia r0!, {r3,r12}
- bpl mcp16_loop
-
-mcp16_fin:
- tst r2, #2
- ldrne r3, [r1], #4
- strne r3, [r0], #4
- ands r2, r2, #1
- bxeq lr
-
-mcp16_cant_align:
- ldrh r3, [r1], #2
- subs r2, r2, #1
- strh r3, [r0], #2
- bne mcp16_cant_align
-
- bx lr
-
-
-
@ 0x12345678 -> 0x34127856
@ r4=temp, lr=0x00ff00ff
.macro bswap reg
orr \reg, \reg, r4, lsl #8
.endm
-
@ dest must be halfword aligned, src can be unaligned
.global memcpy16bswap @ unsigned short *dest, void *src, int count
bx lr
-
-.global memcpy32 @ int *dest, int *src, int count
-
-memcpy32:
- stmfd sp!, {r4,lr}
-
- subs r2, r2, #4
- bmi mcp32_fin
-
-mcp32_loop:
- ldmia r1!, {r3,r4,r12,lr}
- subs r2, r2, #4
- stmia r0!, {r3,r4,r12,lr}
- bpl mcp32_loop
-
-mcp32_fin:
- tst r2, #3
- ldmeqfd sp!, {r4,pc}
- tst r2, #1
- ldrne r3, [r1], #4
- strne r3, [r0], #4
-
-mcp32_no_unal1:
- tst r2, #2
- ldmneia r1!, {r3,r12}
- ldmfd sp!, {r4,lr}
- stmneia r0!, {r3,r12}
- bx lr
-
-
-
.global memset32 @ int *dest, int c, int count
memset32: