Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * String handling functions for PowerPC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 1996 Paul Mackerras.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <asm/ppc_asm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <asm/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <asm/cache.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	.text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /* This clears out any unused part of the destination buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)    just as the libc version does.  -- paulus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) _GLOBAL(strncpy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	PPC_LCMPI 0,r5,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	beqlr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	mtctr	r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	addi	r6,r3,-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	addi	r4,r4,-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	.balign IFETCH_ALIGN_BYTES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 1:	lbzu	r0,1(r4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	cmpwi	0,r0,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	stbu	r0,1(r6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	bdnzf	2,1b		/* dec ctr, branch if ctr != 0 && !cr0.eq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	bnelr			/* if we didn't hit a null char, we're done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	mfctr	r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	PPC_LCMPI 0,r5,0	/* any space left in destination buffer? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	beqlr			/* we know r0 == 0 here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 2:	stbu	r0,1(r6)	/* clear it out if so */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	bdnz	2b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	blr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) EXPORT_SYMBOL(strncpy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) _GLOBAL(strncmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	PPC_LCMPI 0,r5,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	beq-	2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	mtctr	r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	addi	r5,r3,-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	addi	r4,r4,-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	.balign IFETCH_ALIGN_BYTES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 1:	lbzu	r3,1(r5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	cmpwi	1,r3,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	lbzu	r0,1(r4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	subf.	r3,r0,r3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	beqlr	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	bdnzt	eq,1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	blr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 2:	li	r3,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	blr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) EXPORT_SYMBOL(strncmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) _GLOBAL(memchr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	PPC_LCMPI 0,r5,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	beq-	2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	mtctr	r5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	addi	r3,r3,-1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	.balign IFETCH_ALIGN_BYTES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 1:	lbzu	r0,1(r3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	cmpw	0,r0,r4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	bdnzf	2,1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	beqlr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 2:	li	r3,0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	blr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) EXPORT_SYMBOL(memchr)