| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <arch/asm.h> |
| |
| /* |
| * Fill in the buffer with character c (alignment handled by the hardware) |
| * |
| * Parameters: |
| * x0 - buf |
| * x1 - c |
| * x2 - n |
| * Returns: |
| * x0 - buf |
| */ |
| ENTRY(memset) |
| mov x4, x0 |
| and w1, w1, #0xff |
| orr w1, w1, w1, lsl #8 |
| orr w1, w1, w1, lsl #16 |
| orr x1, x1, x1, lsl #32 |
| subs x2, x2, #8 |
| b.mi 2f |
| 1: str x1, [x4], #8 |
| subs x2, x2, #8 |
| b.pl 1b |
| 2: adds x2, x2, #4 |
| b.mi 3f |
| sub x2, x2, #4 |
| str w1, [x4], #4 |
| 3: adds x2, x2, #2 |
| b.mi 4f |
| sub x2, x2, #2 |
| strh w1, [x4], #2 |
| 4: adds x2, x2, #1 |
| b.mi 5f |
| strb w1, [x4] |
| 5: ret |
| ENDPROC(memset) |