mkfile

著名操作系统Plan 9的第三版的部分核心源代码。现在很难找到了。Plan 9是bell实验室开发的Unix后继者。

NPROC=1
</$objtype/mkfile

install:V:
	SYS=`{sed '/^#define._X[123]/d; s/#define.([A-Z0-9_]*).*/\1/' sys.h}
	for(I in $SYS) {
		i=`{echo $I|tr A-Z a-z}
		n=`{sed -n '/[ 	]'$I'[ 	]/s/.*	//p' sys.h}
		if(~ $i exits) i=_exits
		{switch($objtype){
		case 68000
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVL '$'$n, R0
			echo TRAP '$0'
			echo RTS
		case 68020
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVL '$'$n, R0
			echo TRAP '$0'
			echo RTS
		case mips
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R1, '0(FP)'
			echo MOVW '$'$n, R1
			echo SYSCALL
			if(~ $i seek) {
				echo 'MOVW $-1,R5
				BNE R1,R5,4(PC)
				MOVW a+0(FP),R5
				MOVW R1,0(R5)
				MOVW R1,4(R5)'
			}
			echo RET
		case mips2
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R1, '0(FP)'
			echo MOVW '$'$n, R1
			echo ADD '$4',R29
			echo SYSCALL
			echo ADD '$-4',R29
			echo RET
		case spim
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R1, '0(FP)'
			echo MOVW '$'$n, R1
			echo ADD '$4',R29
			echo SYSCALL
			echo ADD '$-4',R29
			echo RET
		case 386
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVL '$'$n, AX
			echo INT '$'64
			if(~ $i seek) {
				echo 'CMPL AX,$-1
				JNE 4(PC)
				MOVL a+0(FP),CX
				MOVL AX,0(CX)
				MOVL AX,4(CX)'
			}
			echo RET
		case sparc
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R7, '0(FP)'
			echo MOVW '$'$n, R7
			echo TA R0
			if(~ $i seek) {
				echo 'CMP R7,$-1
				BNE 4(PC)
				MOVW a+0(FP),R8
				MOVW R7,0(R8)
				MOVW R7,4(R8)'
			}
			echo RETURN
		case 3210
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R3, '0(FP)'
			echo MOVW '$'$n, R3
			echo WORD '$0x06000000'
			echo RETURN
		case 29000
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVL R69, '0(FP)'
			echo MOVL '$'$n, R69
			echo EMULATE 0
			echo RET
		case arm
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R0, '0(FP)'
			echo MOVW '$'$n, R0
			echo SWI 0
			echo RET
		case power
			echo TEXT $i'(SB)', 1, '$0'
			echo MOVW R3, '0(FP)'
			echo MOVW '$'$n, R3
			echo SYSCALL
			if(~ $i seek) {
				echo 'CMP R3,$-1
				BNE 4(PC)
				MOVW a+0(FP),R8
				MOVW R3,0(R8)
				MOVW R3,4(R8)'
			}
			echo RETURN
		case alpha
			j=$i
			if(~ $i seek) j=_seek
			echo TEXT $j'(SB)', 1, '$0'
			echo MOVL R0, '0(FP)'
			echo MOVQ '$'$n, R0
			echo CALL_PAL '$'0x83
			echo RET
		}} > $i.s
		$AS $i.s
	}
	ar vu /$objtype/lib/libc.a *.$O
	rm -f *.$O *.s

nuke clean:V:
	rm -f *.[$OS]

installall:V:
	for(objtype in $CPUS) mk install