/* * M7patch.S: Patch generic routines with M7 variant. * * Copyright (c) 2016, Oracle and/or its affiliates.  All rights reserved. */ #include <linux/linkage.h> #define BRANCH_ALWAYS	0x10680000#define NOP		0x01000000#define NG_DO_PATCH(OLD, NEW)	\	sethi	%hi(NEW), %g1; \	or	%g1, %lo(NEW), %g1; \	sethi	%hi(OLD), %g2; \	or	%g2, %lo(OLD), %g2; \	sub	%g1, %g2, %g1; \	sethi	%hi(BRANCH_ALWAYS), %g3; \	sll	%g1, 11, %g1; \	srl	%g1, 11 + 2, %g1; \	or	%g3, %lo(BRANCH_ALWAYS), %g3; \	or	%g3, %g1, %g3; \	stw	%g3, [%g2]; \	sethi	%hi(NOP), %g3; \	or	%g3, %lo(NOP), %g3; \	stw	%g3, [%g2 + 0x4]; \	flush	%g2; ENTRY(m7_patch_copyops)	NG_DO_PATCH(memcpy, M7memcpy)	NG_DO_PATCH(raw_copy_from_user, M7copy_from_user)	NG_DO_PATCH(raw_copy_to_user, M7copy_to_user)	retl	 nopENDPROC(m7_patch_copyops) ENTRY(m7_patch_bzero)	NG_DO_PATCH(memset, M7memset)	NG_DO_PATCH(__bzero, M7bzero)	NG_DO_PATCH(__clear_user, NGclear_user)	NG_DO_PATCH(tsb_init, NGtsb_init)	retl	 nopENDPROC(m7_patch_bzero) ENTRY(m7_patch_pageops)	NG_DO_PATCH(copy_user_page, NG4copy_user_page)	NG_DO_PATCH(_clear_page, M7clear_page)	NG_DO_PATCH(clear_user_page, M7clear_user_page)	retl	 nopENDPROC(m7_patch_pageops)