Messages in this thread | | | Date | Thu, 18 Nov 2004 07:13:30 -0500 (EST) | From | linux-os <> | Subject | Re: max agruments in system_calls |
| |
On Thu, 18 Nov 2004, Jan Engelhardt wrote:
>> Huh? You KNOW that you don't have more than 7 registers available >> on ix86 so you KNOW that you either need a pointer to a struct (one >> parameter) or it won't work. >> >> FYI: >> eax = function code >> ebx = first parameter >> ecx = second parameter >> edx = third parameter >> esi = fourth parameter >> edi = fifth parameter >> ebp = sixth parameter > > And if you use varargs? > > > Not relevant. You can't pass your arguments on the stack with any efficiency (you become Windows) because the user-stack is just data in the kernel. One would have to copy from the user stack which is about as inefficient as possible.
> Jan Engelhardt > -- > Gesellschaft fÿÿr Wissenschaftliche Datenverarbeitung > Am Fassberg, 37077 Gÿÿttingen, www.gwdg.de >
Cheers, Dick Johnson Penguin : Linux version 2.6.9 on an i686 machine (5537.79 BogoMips). Notice : All mail here is now cached for review by John Ashcroft. 98.36% of all statistics are fiction. | |