Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
ae2c6ca6 DM |
2 | /* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant. |
3 | * | |
4 | * Copyright (C) 2012 David S. Miller <davem@davemloft.net> | |
5 | */ | |
6 | ||
7 | #define BRANCH_ALWAYS 0x10680000 | |
8 | #define NOP 0x01000000 | |
9 | #define NG_DO_PATCH(OLD, NEW) \ | |
10 | sethi %hi(NEW), %g1; \ | |
11 | or %g1, %lo(NEW), %g1; \ | |
12 | sethi %hi(OLD), %g2; \ | |
13 | or %g2, %lo(OLD), %g2; \ | |
14 | sub %g1, %g2, %g1; \ | |
15 | sethi %hi(BRANCH_ALWAYS), %g3; \ | |
16 | sll %g1, 11, %g1; \ | |
17 | srl %g1, 11 + 2, %g1; \ | |
18 | or %g3, %lo(BRANCH_ALWAYS), %g3; \ | |
19 | or %g3, %g1, %g3; \ | |
20 | stw %g3, [%g2]; \ | |
21 | sethi %hi(NOP), %g3; \ | |
22 | or %g3, %lo(NOP), %g3; \ | |
23 | stw %g3, [%g2 + 0x4]; \ | |
24 | flush %g2; | |
25 | ||
26 | .globl niagara4_patch_copyops | |
27 | .type niagara4_patch_copyops,#function | |
28 | niagara4_patch_copyops: | |
29 | NG_DO_PATCH(memcpy, NG4memcpy) | |
31af2f36 AV |
30 | NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user) |
31 | NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user) | |
ae2c6ca6 DM |
32 | retl |
33 | nop | |
34 | .size niagara4_patch_copyops,.-niagara4_patch_copyops | |
35 | ||
9f825962 DM |
36 | .globl niagara4_patch_bzero |
37 | .type niagara4_patch_bzero,#function | |
38 | niagara4_patch_bzero: | |
39 | NG_DO_PATCH(memset, NG4memset) | |
40 | NG_DO_PATCH(__bzero, NG4bzero) | |
41 | NG_DO_PATCH(__clear_user, NGclear_user) | |
42 | NG_DO_PATCH(tsb_init, NGtsb_init) | |
43 | retl | |
44 | nop | |
45 | .size niagara4_patch_bzero,.-niagara4_patch_bzero | |
46 | ||
ae2c6ca6 DM |
47 | .globl niagara4_patch_pageops |
48 | .type niagara4_patch_pageops,#function | |
49 | niagara4_patch_pageops: | |
50 | NG_DO_PATCH(copy_user_page, NG4copy_user_page) | |
9f825962 DM |
51 | NG_DO_PATCH(_clear_page, NG4clear_page) |
52 | NG_DO_PATCH(clear_user_page, NG4clear_user_page) | |
ae2c6ca6 DM |
53 | retl |
54 | nop | |
55 | .size niagara4_patch_pageops,.-niagara4_patch_pageops |