| /branches/arm/boot/arch/arm32/loader/asm.S |
|---|
| 32,55 → 32,54 |
| .global memcpy |
| memcpy: |
| add r3, r1, #3 |
| bic r3, r3, #3 |
| cmp r1, r3 |
| stmdb sp!, {r4, lr} |
| beq case_4 |
| add r3, r1, #3 |
| bic r3, r3, #3 |
| cmp r1, r3 |
| stmdb sp!, {r4, lr} |
| beq case_4 |
| case_1: |
| cmp r2, #0 |
| movne ip, #0 |
| beq case_3 |
| cmp r2, #0 |
| movne ip, #0 |
| beq case_3 |
| case_2: |
| ldrb r3, [ip, r1] |
| strb r3, [ip, r0] |
| add ip, ip, #1 |
| cmp ip, r2 |
| bne case_2 |
| ldrb r3, [ip, r1] |
| strb r3, [ip, r0] |
| add ip, ip, #1 |
| cmp ip, r2 |
| bne case_2 |
| case_3: |
| mov r0, r1 |
| ldmia sp!, {r4, pc} |
| mov r0, r1 |
| ldmia sp!, {r4, pc} |
| case_4: |
| add r3, r0, #3 |
| bic r3, r3, #3 |
| cmp r0, r3 |
| bne case_1 |
| movs r4, r2, lsr #2 |
| moveq lr, r4 |
| beq case_6 |
| mov lr, #0 |
| mov ip, lr |
| add r3, r0, #3 |
| bic r3, r3, #3 |
| cmp r0, r3 |
| bne case_1 |
| movs r4, r2, lsr #2 |
| moveq lr, r4 |
| beq case_6 |
| mov lr, #0 |
| mov ip, lr |
| case_5: |
| ldr r3, [ip, r1] |
| add lr, lr, #1 |
| cmp lr, r4 |
| str r3, [ip, r0] |
| add ip, ip, #4 |
| bne case_5 |
| ldr r3, [ip, r1] |
| add lr, lr, #1 |
| cmp lr, r4 |
| str r3, [ip, r0] |
| add ip, ip, #4 |
| bne case_5 |
| case_6: |
| ands r4, r2, #3 |
| beq case_3 |
| mov r3, lr, lsl #2 |
| add r0, r3, r0 |
| add ip, r3, r1 |
| mov r2, #0 |
| ands r4, r2, #3 |
| beq case_3 |
| mov r3, lr, lsl #2 |
| add r0, r3, r0 |
| add ip, r3, r1 |
| mov r2, #0 |
| case_7: |
| ldrb r3, [r2, ip] |
| strb r3, [r2, r0] |
| add r2, r2, #1 |
| cmp r2, r4 |
| bne case_7 |
| b case_3 |
| ldrb r3, [r2, ip] |
| strb r3, [r2, r0] |
| add r2, r2, #1 |
| cmp r2, r4 |
| bne case_7 |
| b case_3 |