Hello Jaeyong, On 01/08/2013 03:26 AM, jaeyong yoo wrote: > Hello, > > Could you explain about the intend behind platform_execute in usb_drv? > I see it is similar to executing a function but it uses stack allocated > by dde_kit_simple_malloc, and I don't understand why.
This function is used to switch the stack and execute a given function. Since stack switching has to be performed in assembly, the function must be implemented for each platform (e.g. ARM, x86). In the great picture this is part of a very simple user-threading implementation. Each "pseudo" thread needs a stack to need lose its call trace, such a thread is scheduled using setjmp/longjmp calls (see: dde_linux/src/drivers/usb/routine.h). Regards, Sebastian -- Sebastian Sumpf Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ Master SQL Server Development, Administration, T-SQL, SSAS, SSIS, SSRS and more. Get SQL Server skills now (including 2012) with LearnDevNow - 200+ hours of step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only - learn more at: http://p.sf.net/sfu/learnmore_122512 _______________________________________________ Genode-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/genode-main
