Difference between revisions of "Machine language"
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! x86 machine language !! assembler command !! remark | ! x86 machine language !! assembler command !! remark | ||
| + | |- | ||
| + | | 00 01 || add BYTE PTR [bx+di],al|| | ||
| + | |- | ||
| + | | 00 41 41 || add BYTE PTR [bx+di+0x41],al|| | ||
|- | |- | ||
| 0a || .byte 0xa || | | 0a || .byte 0xa || | ||
Revision as of 10:22, 14 December 2014
This shows a mapping of x86 machine language to assembler
| x86 machine language | assembler command | remark |
|---|---|---|
| 00 01 | add BYTE PTR [bx+di],al | |
| 00 41 41 | add BYTE PTR [bx+di+0x41],al | |
| 0a | .byte 0xa | |
| 41 | inc cx | |
| 54 | push rsp | |
| 85 c0 | test eax,eax | |
| 90 | NOP | |
| b8 00 00 00 00 | mov eax,0x0 | |
| c3 | ret | |
| cd 10 | int 10 | |
| eb fd | short jump to executing the byte before eb | |
| fa | cli | This will clear the interrupt flag in the processor meaning interrupts will not be processed after the flag is set again. This means a high risk - no more keyboard input etc.. So this is a privileged command and may only be executed by the operating system. |
