> I was thinking about learning assembler, but there is a > problem. > I heard about DOS interrupts, which I guess work only in > DOS. > Which I guess means that if I buy a book about x86 > assembler, > and it speak a lot about that interrupt things, > I have a fair chance it wouldn't work in Linux, is that > right? > Maybe in that case, there are "Linux x86 assembler" books? > > Another question: How assembler works in the secure Linux > environment? > Linux checks that calls are not a threat to the system? >
Funny how this question has come up again. You might like to check the list archive for the previous discussion. To start this you will need to learn: X86 assembler - Get a good general purpose book without too many references to any operating system. GAS The GNU assembler. It comes with it's own documentation. Writing assembler in LINUX. See the Assembly-HOWTO that comes with all linux distros (ie look in /usr/doc/HOWTO). The simplest way to test a few assembler instructions is to use the assembler in-line capabilities of gcc . Forget anything you learnt about DOS software interrupts. There nothing wrong with staying with DOS until you feel confident with assembler. At least it is simple. Linux is good as a host platform if you want to write assembler for what is known as a embedded target. Regards ....
