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git.lizzy.rs Git - plan9front.git/blobdiff - sys/src/boot/pc/l.s
TEXT pmode32(SB), $0
CLI
- /* disable nmi */
- PUSHA
- LWI(0x70, rDX)
- INB
- ANDB $0x7F, AL
- OUTB
- POPA
-
/* get return pc */
POPR(rDI)
_halt:
JMP _halt
-TEXT spllo(SB), $0
- /* enable nmi */
- PUSHA
- LWI(0x70, rDX)
- INB
- ORB $0x80, AL
- OUTB
- POPA
-
- STI
- RET
-
TEXT getc(SB), $0
CALL rmode16(SB)
- CALL16(spllo(SB))
+ STI
MOVB $0x00, AH
BIOSCALL(0x16)
_getcret:
TEXT gotc(SB), $0
CALL rmode16(SB)
- CALL16(spllo(SB))
+ STI
MOVB $0x01, AH
BIOSCALL(0x16)
JNZ _getcret
TEXT putc(SB), $0
MOVL 4(SP),AX
CALL rmode16(SB)
- CALL16(spllo(SB))
+ STI
MOVB $0x0E, AH
BIOSCALL(0x10)
_pret32:
MOVL t+4(SP), AX
PUSHL AX
CALL rmode16(SB)
- CALL16(spllo(SB))
+ STI
POPR(rDX)
POPR(rCX)
MOVB $0x86, AH
LW(pxepoff(SB), rAX)
PUSHR(rAX)
- CALL16(spllo(SB))
+ STI
CLR(rAX)
CLR(rBX)
MOVW 10(SP), BX
MOVL 12(SP), SI
CALL rmode16(SB)
- CALL16(spllo(SB))
+ STI
CALL16(readsect16(SB))
CALL16(pmode32(SB))
ANDL $0xFFFF, AX