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get rid of custom memcpy funcs

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not used for anything important, just a maintenance burden
This commit is contained in:
notaz 2017-10-14 21:10:25 +03:00
parent ba11a48115
commit fdcfd32374
9 changed files with 7 additions and 198 deletions
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70
pico/misc_arm.s
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@ -6,44 +6,6 @@
* 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
@ -52,7 +14,6 @@ mcp16_cant_align:
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
@ -121,37 +82,6 @@ mcp16bs_cant_align2:
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: