1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * linux/arch/arm/lib/csumpartialcopy.S |
4 | * |
5 | * Copyright (C) 1995-1998 Russell King |
6 | */ |
7 | #include <linux/linkage.h> |
8 | #include <asm/assembler.h> |
9 | |
10 | .text |
11 | |
12 | /* Function: __u32 csum_partial_copy_nocheck(const char *src, char *dst, int len) |
13 | * Params : r0 = src, r1 = dst, r2 = len |
14 | * Returns : r0 = new checksum |
15 | */ |
16 | |
17 | .macro save_regs |
18 | stmfd sp!, {r1, r4 - r8, lr} |
19 | .endm |
20 | |
21 | .macro load_regs |
22 | ldmfd sp!, {r1, r4 - r8, pc} |
23 | .endm |
24 | |
25 | .macro load1b, reg1 |
26 | ldrb \reg1, [r0], #1 |
27 | .endm |
28 | |
29 | .macro load2b, reg1, reg2 |
30 | ldrb \reg1, [r0], #1 |
31 | ldrb \reg2, [r0], #1 |
32 | .endm |
33 | |
34 | .macro load1l, reg1 |
35 | ldr \reg1, [r0], #4 |
36 | .endm |
37 | |
38 | .macro load2l, reg1, reg2 |
39 | ldr \reg1, [r0], #4 |
40 | ldr \reg2, [r0], #4 |
41 | .endm |
42 | |
43 | .macro load4l, reg1, reg2, reg3, reg4 |
44 | ldmia r0!, {\reg1, \reg2, \reg3, \reg4} |
45 | .endm |
46 | |
47 | #define FN_ENTRY ENTRY(csum_partial_copy_nocheck) |
48 | #define FN_EXIT ENDPROC(csum_partial_copy_nocheck) |
49 | |
50 | #include "csumpartialcopygeneric.S" |
51 | |