Trap number: how a system software recognise it 3082
While I don't know of any off-the-shelf tools to do exactly those two things, those two functions...
TonY
Hi, I have installed the server and started up successfully. mysql.sock file is written tovar-lib-mysqldirectory as well. Now I found that I also need to...
That function is actually called read, not readstb. And it knows the number fromusr-include-asm-unistd.h And finally it is not really a trap number, we don't have enough different traps for all system calls, so Linux use the same trap instruction but put the system call number in a register. On IA32 the EAX register is used for this purpose.
What do you have in mind? Software bypbutting the library code? Software written in different languages?
Each system call have a number. On a particular platform the number for read is fixed.
Not really.
Which variable?
No.
Question makes no sense.
This is wrong. The device doesn't mess directly with CPU registers.
The controller? I think typically the controller does have access to the entire physical memory. For stuff like firewire this is even worse, not just the controller, but even the external device have full access to your memory.
What is a File Control Block? I know DOS have some leftover from 1.0 called a File Control Block, but I guess that is not what you are talking about.
I whish it was that simple. In reality I think there are three or more different protocols for this. And probably one or more of them works similar to what you describe.
Most controllers have litle if any memory.
-- Kasper Dupont
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