VisionFive2 Linux kernel

b24413180f560 (Greg Kroah-Hartman 2017-11-01 15:07:57 +0100  1) /* SPDX-License-Identifier: GPL-2.0 */
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  2) #include "libgcc.h"
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  3) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  4) ; numerator in A0/A1
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  5) ; denominator in A2/A3
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  6) 	.global	__modsi3
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  7) __modsi3:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  8) 	PUSHP	S2P
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900  9) 	bsr	modnorm
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 10) 	bsr	__divsi3
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 11) 	mov.l	er3,er0
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 12) 	bra	exitdiv
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 13) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 14) 	.global	__umodsi3
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 15) __umodsi3:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 16) 	bsr	__udivsi3:16
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 17) 	mov.l	er3,er0
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 18) 	rts
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 19) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 20) 	.global	__divsi3
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 21) __divsi3:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 22) 	PUSHP	S2P
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 23) 	bsr	divnorm
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 24) 	bsr	__udivsi3:16
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 25) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 26) 	; examine what the sign should be
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 27) exitdiv:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 28) 	btst	#3,S2L
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 29) 	beq	reti
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 30) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 31) 	; should be -ve
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 32) 	neg.l	A0P
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 33) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 34) reti:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 35) 	POPP	S2P
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 36) 	rts
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 37) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 38) divnorm:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 39) 	mov.l	A0P,A0P		; is the numerator -ve
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 40) 	stc	ccr,S2L		; keep the sign in bit 3 of S2L
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 41) 	bge	postive
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 42) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 43) 	neg.l	A0P		; negate arg
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 44) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 45) postive:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 46) 	mov.l	A1P,A1P		; is the denominator -ve
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 47) 	bge	postive2
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 48) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 49) 	neg.l	A1P		; negate arg
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 50) 	xor.b	#0x08,S2L	; toggle the result sign
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 51) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 52) postive2:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 53) 	rts
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 54) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 55) ;; Basically the same, except that the sign of the divisor determines
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 56) ;; the sign.
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 57) modnorm:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 58) 	mov.l	A0P,A0P		; is the numerator -ve
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 59) 	stc	ccr,S2L		; keep the sign in bit 3 of S2L
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 60) 	bge	mpostive
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 61) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 62) 	neg.l	A0P		; negate arg
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 63) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 64) mpostive:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 65) 	mov.l	A1P,A1P		; is the denominator -ve
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 66) 	bge	mpostive2
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 67) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 68) 	neg.l	A1P		; negate arg
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 69) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 70) mpostive2:
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 71) 	rts
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 72) 
a71a29de4c2f9 (Yoshinori Sato     2015-01-28 02:48:15 +0900 73) 	.end