Re: linux system call for allocation of memory

[zad <zacido@tiscali.it>]

Lawrence wrote:
> Hi Linux asm gurus,
> 
> 
> I would like to know if the linux kernel has the syscall for memory
> manipulation(allocation, release and resize) that synonymous with DOS
> 48H of INT 21.  I've read some documents saying that these are
> implemented in C library.
> 
> I know that I can use the flat memory model, but I would like to take
> the allocaion/release approach, for easy porting my current DOS program
> to Linux.
> 
> Thanks
> Lawrence
> 
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So :
1) If u want call a linux'system call u need to use the interrupt 0x80 
with the follown convenctions:
	-eax contains the syscall number
	-ebx ecx edx esi edi the first argument ,second ,and third and 			so 
one till the six
	-the return value of a syscall is stored in eax reg.
2) a complete list of sys call is in the file 
/linux/include/asm/unistd.h where linux is the base tree of the kernel 
source.