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open.s
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1979-01-10
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263 b
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24 lines
/ C library -- open
/ file = open(string, mode)
/ file == -1 means error
.globl _open,
.globl cerror
.open = 5.
_open:
mov r5,-(sp)
mov sp,r5
mov 4(r5),0f
mov 6(r5),0f+2
sys 0; 9f
bec 1f
jmp cerror
1:
mov (sp)+,r5
rts pc
.data
9:
sys .open; 0:..; ..