Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * M7patch.S: Patch generic routines with M7 variant.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (c) 2016, Oracle and/or its affiliates.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define BRANCH_ALWAYS	0x10680000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define NOP		0x01000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define NG_DO_PATCH(OLD, NEW)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	sethi	%hi(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	or	%g1, %lo(NEW), %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	sethi	%hi(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	or	%g2, %lo(OLD), %g2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	sub	%g1, %g2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	sethi	%hi(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	sll	%g1, 11, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	srl	%g1, 11 + 2, %g1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	or	%g3, %g1, %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	stw	%g3, [%g2]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	sethi	%hi(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	or	%g3, %lo(NOP), %g3; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	stw	%g3, [%g2 + 0x4]; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	flush	%g2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) ENTRY(m7_patch_copyops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	NG_DO_PATCH(memcpy, M7memcpy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	NG_DO_PATCH(raw_copy_from_user, M7copy_from_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	NG_DO_PATCH(raw_copy_to_user, M7copy_to_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ENDPROC(m7_patch_copyops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ENTRY(m7_patch_bzero)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	NG_DO_PATCH(memset, M7memset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	NG_DO_PATCH(__bzero, M7bzero)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	NG_DO_PATCH(__clear_user, NGclear_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	NG_DO_PATCH(tsb_init, NGtsb_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ENDPROC(m7_patch_bzero)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ENTRY(m7_patch_pageops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	NG_DO_PATCH(copy_user_page, NG4copy_user_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	NG_DO_PATCH(_clear_page, M7clear_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	NG_DO_PATCH(clear_user_page, M7clear_user_page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ENDPROC(m7_patch_pageops)