vpush.s

ICCAVR中所有的库函数源码

; push volatile registers
; for use by "machine routines" that are written in C.
; for example, a_fp2int.s calling fp2int.c to do the actual conversion.
;
; based on lpush.s' push_lset and pop_lset
;
	.text
push_vset::
	st -y,R31
	st -y,R30
	st -y,R27
	st -y,R26
	st -y,R25
	st -y,R24
	st -y,R9
	st -y,R8
	st -y,R7
	st -y,R6
	st -y,R5
	st -y,R4
	st -y,R3
	st -y,R2
	st -y,R1
	st -y,R0
	ret

pop_vset::
	ld R0,y+
	ld R1,y+
	ld R2,y+
	ld R3,y+
	ld R4,y+
	ld R5,y+
	ld R6,y+
	ld R7,y+
	ld R8,y+
	ld R9,y+
	ld R24,y+
	ld R25,y+
	ld R26,y+
	ld R27,y+
	ld R30,y+
	ld R31,y+
	ret