diff options
Diffstat (limited to 'src/string/arm/__aeabi_memcpy.s')
| -rw-r--r-- | src/string/arm/__aeabi_memcpy.s | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/string/arm/__aeabi_memcpy.s b/src/string/arm/__aeabi_memcpy.s new file mode 100644 index 00000000..3a527e41 --- /dev/null +++ b/src/string/arm/__aeabi_memcpy.s @@ -0,0 +1,45 @@ +.syntax unified + +.global __aeabi_memcpy8 +.global __aeabi_memcpy4 +.global __aeabi_memcpy +.global __aeabi_memmove8 +.global __aeabi_memmove4 +.global __aeabi_memmove + +.type __aeabi_memcpy8,%function +.type __aeabi_memcpy4,%function +.type __aeabi_memcpy,%function +.type __aeabi_memmove8,%function +.type __aeabi_memmove4,%function +.type __aeabi_memmove,%function + +__aeabi_memmove8: +__aeabi_memmove4: +__aeabi_memmove: + cmp r0, r1 + bls 3f + cmp r2, #0 + beq 2f + adds r0, r0, r2 + adds r2, r1, r2 +1: subs r2, r2, #1 + ldrb r3, [r2] + subs r0, r0, #1 + strb r3, [r0] + cmp r1, r2 + bne 1b +2: bx lr +__aeabi_memcpy8: +__aeabi_memcpy4: +__aeabi_memcpy: +3: cmp r2, #0 + beq 2f + adds r2, r1, r2 +1: ldrb r3, [r1] + adds r1, r1, #1 + strb r3, [r0] + adds r0, r0, #1 + cmp r1, r2 + bne 1b +2: bx lr |