Plan 9 from Bell Labs’s /n/sources/contrib/rminnich/trace/9.probe/pc/profprobe.s
TEXT _profin(SB), 1, $0 TESTL probeactive(SB), AX JZ inotready MOVL 4(SP),AX PUSHL AX MOVL 4(SP),AX PUSHL AX CALL profin(SB) POPL AX POPL AX inotready: RET TEXT _profout(SB), 1, $0 PUSHL AX TESTL probeactive(SB), AX JZ notready MOVL 4(SP),AX PUSHL AX CALL profout(SB) POPL AX notready: POPL AX RET
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