Date: Sun, 20 Apr 2008 12:39:10 +0200 From: Erik Trulsson <ertr1013@student.uu.se> To: emily becker <emily.bckr@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: symbol table Message-ID: <20080420103910.GA92852@owl.midgard.homeip.net> In-Reply-To: <5124a9390804200202h535112dcx4005e9df6e5e0f5e@mail.gmail.com> References: <5124a9390804200202h535112dcx4005e9df6e5e0f5e@mail.gmail.com>
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On Sun, Apr 20, 2008 at 12:02:09PM +0300, emily becker wrote: > Hi, > > I have a question about symbol table. > One of the section In symbol table is memory adress which symbol is located. > I wonder if this memory adress is bound at run-time or compile-time? It depends. Symbols referring to objects in a dynamically loaded library will be bound at run-time, the rest should be bound at compile-time. > if it is compile-time, I don't understand how do we know whether the symbol > is located this adress. > Maybe this adress is already bound by other process or like this. Each process runs in its own address space, and therefore the compiler (actually: the linker) can know exactly where in this address space things will end up. (The above is true for FreeBSD and just about all other Unix-derived systems. Other systems can do things differently.) -- <Insert your favourite quote here.> Erik Trulsson ertr1013@student.uu.se
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