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Re: [Qemu-devel] [Bug 1344320] Re: qemu-aarch64 cannot execute glibc


From: Richard Henderson
Subject: Re: [Qemu-devel] [Bug 1344320] Re: qemu-aarch64 cannot execute glibc
Date: Mon, 21 Jul 2014 09:00:56 -1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

On 07/21/2014 12:46 AM, Peter Maydell wrote:
> Q: is this in a released glibc? The generic timers are strictly speaking
> optional, so this seems kind of bogus. Also looking at the glibc sources
> it never reads the counter frequency so what it is hoping to do with the
> timer values I have no idea.
> 

It's trying to measure clock cycles required to perform the startup
relocations.  E.g.

$ LD_DEBUG=statistics /bin/true
   4224:        
   4224: runtime linker statistics:
   4224:   total startup time in dynamic loader: 558705 clock cycles
   4224:   time needed for relocation: 142093 clock cycles (25.4%)
   4224:                  number of relocations: 2
   4224:       number of relocations from cache: 27
   4224:         number of relative relocations: 0
   4224:            time needed to load objects: 200809 clock cycles (35.9%)
   4224:        
   4224: runtime linker statistics:
   4224:            final number of relocations: 4
   4224: final number of relocations from cache: 27


r~



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