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yoyoyip
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 Posted: Wed Oct 18, 2006 6:20 am Post subject: AA script can't assemble DIV instruction |
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Hi DarkByte,
I just found out that the following code cant assemble in AA script
alloc(test, 16)
test:
div [esi+C]
I found out the opcode from assembleunit F7 7E 0C, which turn out to instruction idiv [esi+C], the correct opcode should be F7 76 0C.
May I know where is the place to edit ModRM byte to fix this bug?
Last edited by yoyoyip on Wed Oct 18, 2006 7:42 am; edited 1 time in total |
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Dark Byte
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| Posted: Wed Oct 18, 2006 6:24 am Post subject: |
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assemblerunit.pas
(look at the array of instructions and their first few bytes)
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Last edited by Dark Byte on Wed Oct 18, 2006 6:34 am; edited 1 time in total |
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Dark Byte
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Location: The netherlands
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| Posted: Wed Oct 18, 2006 6:32 am Post subject: |
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this'll fix it:
find
| Code: |
(mnemonic:'DIV';opcode1:eo_reg7;paramtype1:par_rm8;bytes:1;bt1:$f6),
(mnemonic:'DIV';opcode1:eo_reg7;paramtype1:par_rm16;bytes:2;bt1:$66;bt2:$f7),
(mnemonic:'DIV';opcode1:eo_reg7;paramtype1:par_rm32;bytes:1;bt1:$f7),
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and change it to:
| Code: |
(mnemonic:'DIV';opcode1:eo_reg6;paramtype1:par_rm8;bytes:1;bt1:$f6),
(mnemonic:'DIV';opcode1:eo_reg6;paramtype1:par_rm16;bytes:2;bt1:$66;bt2:$f7),
(mnemonic:'DIV';opcode1:eo_reg6;paramtype1:par_rm32;bytes:1;bt1:$f7),
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Do not ask me about online cheats. I don't know any and wont help finding them.
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yoyoyip
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Joined: 09 Apr 2006
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| Posted: Wed Oct 18, 2006 7:39 am Post subject: |
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| Thanks DB.
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