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32-bit operand fixes

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This commit is contained in:
Jeff Parsons 2015-05-05 11:45:24 -07:00 • committed by jeffpar
commit 380db6ef7d
8 changed files with 53 additions and 20 deletions
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6
tests/pc/80386/tests.nasm
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@ -46,11 +46,15 @@ start: mov eax,0x44332211
jnz near goProt ; apparently we have to tell NASM "near" because this is a forward reference
times 32768 nop ; lots of NOPs to force a 16-bit conditional jump
addrGDT:dw romGDTEnd - romGDT - 1 ; 16-bit limit of romGDT
dw romGDT, 0xffff ; 32-bit base address of romGDT (works as long as we're aliased at 0xffff0000)
romGDT: defDesc 0 ; the first descriptor in any descriptor table is always a dud (it corresponds to the null descriptor)
defDesc 0x000f0000,0x0000ffff,ACC_TYPE_CODE_READABLE
defDesc 0x00000000,0x000fffff,ACC_TYPE_DATA_WRITABLE
romGDTEnd:
goProt: lgdt [cs:romGDT]
goProt: o32 lgdt [cs:addrGDT]
mov eax,cr0
or eax,CR0_MSW_PE
mov cr0,eax