1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* NG2patch.S: Patch Ultra-I routines with Niagara-2 variant.
4 * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
7 #define BRANCH_ALWAYS 0x10680000
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; \
15 sethi %hi(BRANCH_ALWAYS), %g3; \
17 srl %g1, 11 + 2, %g1; \
18 or %g3, %lo(BRANCH_ALWAYS), %g3; \
21 sethi %hi(NOP), %g3; \
22 or %g3, %lo(NOP), %g3; \
23 stw %g3, [%g2 + 0x4]; \
26 .globl niagara2_patch_copyops
27 .type niagara2_patch_copyops,#function
28 niagara2_patch_copyops:
29 NG_DO_PATCH(memcpy, NG2memcpy)
30 NG_DO_PATCH(raw_copy_from_user, NG2copy_from_user)
31 NG_DO_PATCH(raw_copy_to_user, NG2copy_to_user)
34 .size niagara2_patch_copyops,.-niagara2_patch_copyops