Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  *  arch/xtensa/lib/strncpy_user.S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *  This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Public License.  See the file "COPYING" in the main directory of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *  this archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *  Returns: -EFAULT if exception before terminator, N if the entire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *  buffer filled, else strlen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *  Copyright (C) 2002 Tensilica Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <asm/asmmacro.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <asm/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * char *__strncpy_user(char *dst, const char *src, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #ifdef __XTENSA_EB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) # define MASK0 0xff000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) # define MASK1 0x00ff0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) # define MASK2 0x0000ff00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) # define MASK3 0x000000ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) # define MASK0 0x000000ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) # define MASK1 0x0000ff00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) # define MASK2 0x00ff0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) # define MASK3 0xff000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) # Register use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #   a0/ return address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #   a1/ stack pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #   a2/ return value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #   a3/ src
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #   a4/ len
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #   a5/ mask0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #   a6/ mask1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #   a7/ mask2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #   a8/ mask3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #   a9/ tmp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #   a10/ tmp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #   a11/ dst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) #   a12/ tmp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) .text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) ENTRY(__strncpy_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	abi_entry_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	# a2/ dst, a3/ src, a4/ len
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	mov	a11, a2		# leave dst in return value register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	beqz	a4, .Lret	# if len is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	movi	a5, MASK0	# mask for byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	movi	a6, MASK1	# mask for byte 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	movi	a7, MASK2	# mask for byte 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	movi	a8, MASK3	# mask for byte 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	bbsi.l	a3, 0, .Lsrc1mod2 # if only  8-bit aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	bbsi.l	a3, 1, .Lsrc2mod4 # if only 16-bit aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) .Lsrcaligned:	# return here when src is word-aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	srli	a12, a4, 2	# number of loop iterations with 4B per loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	movi	a9, 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	bnone	a11, a9, .Laligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	j	.Ldstunaligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) .Lsrc1mod2:	# src address is odd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) EX(11f)	l8ui	a9, a3, 0		# get byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	addi	a3, a3, 1		# advance src pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) EX(10f)	s8i	a9, a11, 0		# store byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	beqz	a9, .Lret		# if byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	addi	a11, a11, 1		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	addi	a4, a4, -1		# decrement len
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	beqz	a4, .Lret		# if len is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	bbci.l	a3, 1, .Lsrcaligned	# if src is now word-aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) .Lsrc2mod4:	# src address is 2 mod 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) EX(11f)	l8ui	a9, a3, 0		# get byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	/* 1-cycle interlock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) EX(10f)	s8i	a9, a11, 0		# store byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	beqz	a9, .Lret		# if byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	addi	a11, a11, 1		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	addi	a4, a4, -1		# decrement len
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	beqz	a4, .Lret		# if len is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) EX(11f)	l8ui	a9, a3, 1		# get byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	addi	a3, a3, 2		# advance src pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) EX(10f)	s8i	a9, a11, 0		# store byte 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	beqz	a9, .Lret		# if byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	addi	a11, a11, 1		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	addi	a4, a4, -1		# decrement len
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	bnez	a4, .Lsrcaligned	# if len is nonzero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) .Lret:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99)  * dst is word-aligned, src is word-aligned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	.align	4		# 1 mod 4 alignment for LOOPNEZ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	.byte	0		# (0 mod 4 alignment for LBEG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .Laligned:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #if XCHAL_HAVE_LOOPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	loopnez	a12, .Loop1done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	beqz	a12, .Loop1done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	slli	a12, a12, 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	add	a12, a12, a11	# a12 = end of last 4B chunck
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .Loop1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) EX(11f)	l32i	a9, a3, 0		# get word from src
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	addi	a3, a3, 4		# advance src pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	bnone	a9, a5, .Lz0		# if byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	bnone	a9, a6, .Lz1		# if byte 1 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	bnone	a9, a7, .Lz2		# if byte 2 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) EX(10f)	s32i	a9, a11, 0		# store word to dst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	bnone	a9, a8, .Lz3		# if byte 3 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	addi	a11, a11, 4		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #if !XCHAL_HAVE_LOOPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	blt	a11, a12, .Loop1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .Loop1done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	bbci.l	a4, 1, .L100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	# copy 2 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) EX(11f)	l16ui	a9, a3, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	addi	a3, a3, 2		# advance src pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #ifdef __XTENSA_EB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	bnone	a9, a7, .Lz0		# if byte 2 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	bnone	a9, a8, .Lz1		# if byte 3 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	bnone	a9, a5, .Lz0		# if byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	bnone	a9, a6, .Lz1		# if byte 1 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) EX(10f)	s16i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	addi	a11, a11, 2		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .L100:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	bbci.l	a4, 0, .Lret
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) EX(11f)	l8ui	a9, a3, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	/* slot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) EX(10f)	s8i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	beqz	a9, .Lret		# if byte is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	addi	a11, a11, 1-3		# advance dst ptr 1, but also cancel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 					# the effect of adding 3 in .Lz3 code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	/* fall thru to .Lz3 and "retw" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .Lz3:	# byte 3 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	addi	a11, a11, 3		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .Lz0:	# byte 0 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #ifdef __XTENSA_EB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	movi	a9, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #endif /* __XTENSA_EB__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) EX(10f)	s8i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .Lz1:	# byte 1 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) #ifdef __XTENSA_EB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	extui   a9, a9, 16, 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #endif /* __XTENSA_EB__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) EX(10f)	s16i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	addi	a11, a11, 1		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .Lz2:	# byte 2 is zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) #ifdef __XTENSA_EB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	extui   a9, a9, 16, 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #endif /* __XTENSA_EB__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) EX(10f)	s16i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	movi	a9, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) EX(10f)	s8i	a9, a11, 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	addi	a11, a11, 2		# advance dst pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	.align	4		# 1 mod 4 alignment for LOOPNEZ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	.byte	0		# (0 mod 4 alignment for LBEG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) .Ldstunaligned:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)  * for now just use byte copy loop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) #if XCHAL_HAVE_LOOPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	loopnez	a4, .Lunalignedend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	beqz	a4, .Lunalignedend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	add	a12, a11, a4		# a12 = ending address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #endif /* XCHAL_HAVE_LOOPS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .Lnextbyte:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) EX(11f)	l8ui	a9, a3, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	addi	a3, a3, 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) EX(10f)	s8i	a9, a11, 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	beqz	a9, .Lunalignedend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	addi	a11, a11, 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #if !XCHAL_HAVE_LOOPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	blt	a11, a12, .Lnextbyte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) .Lunalignedend:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	sub	a2, a11, a2		# compute strlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	abi_ret_default
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) ENDPROC(__strncpy_user)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	.section .fixup, "ax"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	.align	4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	/* For now, just return -EFAULT.  Future implementations might
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	 * like to clear remaining kernel space, like the fixup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	 * implementation in memset().  Thus, we differentiate between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	 * load/store fixups. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 10:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 11:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	movi	a2, -EFAULT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	abi_ret_default