Created
April 23, 2014 03:48
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ARM is pretty
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| /* uint32_t crc_asm01(void *, uint32_t); */ | |
| .global crc_asm01 | |
| crc_asm01: | |
| push {r4} | |
| mvn r2, #0 | |
| ldr r3, =0xEDB88320 | |
| .L1: | |
| ldrb r4, [r0] | |
| add r0, #1 | |
| eor r2, r4 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| lsrs r2, #1 | |
| eorcs r2, r3 | |
| subs r1, #1 | |
| bne .L1 | |
| mvn r0, r2 | |
| pop {r4} | |
| bx lr |
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