| plan 9 kernel history: overview | file list | diff list |
1991/0623/pc/l.s (diff list | history)
| 1991/0623/sys/src/9/pc/l.s:1,10 – 1991/0625/sys/src/9/pc/l.s:1,26 (short | long | prev | next) | ||
| 1991/0625 | #include "mem.h" | |
| 1991/0614 | ||
| 1991/0625 | GLOBL gdtptr(SB),$6 DATA gdtptr+0(SB)/2, $(6*8) DATA gdtptr+2(SB)/4, $gdt(SB) | |
| 1991/0614 | /* | |
| 1991/0622 | * boot processor | |
| 1991/0614 | */ TEXT start(SB),$0 | |
| 1991/0625 | CLI /* disable interrupts */ MOVW $NULLSEL,IDTR /* force shutdown on error */ /* point data segment at low memory */ XORL AX,AX MOVW AX,DS /* load gdt address (valid after paging) */ LEAL gdtptr(SB),AX MOVL -KZERO(AX),GDTR | |
| 1991/0614 | CALL main(SB) /* never returns */ | |
| 1991/0623/sys/src/9/pc/l.s:116,134 – 1991/0625/sys/src/9/pc/l.s:132,143 | ||
| 1991/0623 | */ | |
| 1991/0622 | alltrap: | |
| 1991/0623 | ||
| 1991/0625 | PUSHL DS | |
| 1991/0622 | PUSHAL | |
| 1991/0625 | MOVL $KDSEL, AX MOVW AX, DS | |
| 1991/0614 | CALL trap(SB) | |
| 1991/0622 | POPAL | |
| 1991/0623 |
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| 1991/0625 | POPL DS ADDL $8,SP /* pop the trap and error codes */ | |
| 1991/0622 | IRETL | |
| 1991/0619 | ||
| 1991/0623 |
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| 1991/0619 |
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| 1991/0623 |
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| 1991/0619 |
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