Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* strlen.S: Sparc optimized strlen code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Hand optimized from GNU libc's strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 1991,1996 Free Software Foundation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 1996,2008 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/asm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define LO_MAGIC 0x01010101
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define HI_MAGIC 0x80808080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	.text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) ENTRY(strlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	mov	%o0, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	andcc	%o0, 3, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	BRANCH32(be, pt, 9f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	 sethi	%hi(HI_MAGIC), %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	ldub	[%o0], %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	BRANCH_REG_ZERO(pn, %o5, 11f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	 add	%o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	andcc	%o0, 3, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	BRANCH32(be, pn, 4f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	 or	%o4, %lo(HI_MAGIC), %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	ldub	[%o0], %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	BRANCH_REG_ZERO(pn, %o5, 12f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	 add	%o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	andcc	%o0, 3, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	BRANCH32(be, pt, 5f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	 sethi	%hi(LO_MAGIC), %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	ldub	[%o0], %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	BRANCH_REG_ZERO(pn, %o5, 13f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	 add	%o0, 1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	BRANCH32(ba, pt, 8f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 or	%o4, %lo(LO_MAGIC), %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 9:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	or	%o4, %lo(HI_MAGIC), %o3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	sethi	%hi(LO_MAGIC), %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	or	%o4, %lo(LO_MAGIC), %o2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	ld	[%o0], %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	sub	%o5, %o2, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	andcc	%o4, %o3, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	BRANCH32(be, pt, 8b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	 add	%o0, 4, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	/* Check every byte. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	srl	%o5, 24, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	andcc	%g7, 0xff, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	BRANCH32(be, pn, 1f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	 add	%o0, -4, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	srl	%o5, 16, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	andcc	%g7, 0xff, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	BRANCH32(be, pn, 1f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	 add	%o4, 1, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	srl	%o5, 8, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	andcc	%g7, 0xff, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	BRANCH32(be, pn, 1f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	 add	%o4, 1, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	andcc	%o5, 0xff, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	BRANCH32_ANNUL(bne, pt, 2b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	 ld	[%o0], %o5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	add	%o4, 1, %o4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	 sub	%o4, %o1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	 mov	0, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	 mov	1, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 13:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 	retl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	 mov	2, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ENDPROC(strlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) EXPORT_SYMBOL(strlen)