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) #include "libgcc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) ; numerator in A0/A1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) ; denominator in A2/A3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 	.global	__modsi3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) __modsi3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	PUSHP	S2P
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	bsr	modnorm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	bsr	__divsi3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	mov.l	er3,er0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	bra	exitdiv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	.global	__umodsi3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) __umodsi3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	bsr	__udivsi3:16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	mov.l	er3,er0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	.global	__divsi3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) __divsi3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	PUSHP	S2P
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	bsr	divnorm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	bsr	__udivsi3:16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	; examine what the sign should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) exitdiv:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	btst	#3,S2L
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	beq	reti
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	; should be -ve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	neg.l	A0P
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) reti:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	POPP	S2P
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) divnorm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	mov.l	A0P,A0P		; is the numerator -ve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	stc	ccr,S2L		; keep the sign in bit 3 of S2L
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	bge	postive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	neg.l	A0P		; negate arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) postive:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	mov.l	A1P,A1P		; is the denominator -ve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	bge	postive2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	neg.l	A1P		; negate arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	xor.b	#0x08,S2L	; toggle the result sign
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) postive2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) ;; Basically the same, except that the sign of the divisor determines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) ;; the sign.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) modnorm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	mov.l	A0P,A0P		; is the numerator -ve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	stc	ccr,S2L		; keep the sign in bit 3 of S2L
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	bge	mpostive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	neg.l	A0P		; negate arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) mpostive:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	mov.l	A1P,A1P		; is the denominator -ve
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	bge	mpostive2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	neg.l	A1P		; negate arg
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) mpostive2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	rts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	.end