HI all
while reading the source of the open system call I encountered
the following macro in a function kmem_cache_alloc
#define local_irq_save(x) __asm__ __volatile__ ("pushfl;
popl %0; cli; ":"=g"(x)::"memory")
this generated a code(pushfl;popl -4(%ebp);cli)
What does the above piece of code mean and what is it's purpose?
Also I would be grateful if some kind of pointers are provided to
understand the whole
process of accessing ,reading and writing into files.
thanks and regards
GP
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