From: Zhang Hong-W17904 (H.Zhang@motorola.com)
Date: Wed Jan 31 2001 - 02:34:22 EST
Does the user program run from flash directly(text segment resides flash) or copy the code including text and data segment into ram then run from ram? > -----Original Message----- > From: Tom Walsh [mailto:tom@cyberiansoftware.com] > Sent: Wednesday, January 31, 2001 11:16 AM > To: uclinux-dev@uClinux.org > Subject: Re: [uClinux-dev] Is supervisor/user mode is necessary for > uCLinux ? > > > Zhang Hong-W17904 wrote: > > > > > > > So, what about the uClinux 2.4.X on these issues? > > > > Guess what... You lose, the same problems exist for the 2.4 kernel in > any processor situation in which an MMU is not available. > Unless... You > wish to write copious amounts of code to simulate the operation of an > MMU! > > Get real people! This is not mainstream computing shrunk down to the > molecular level, this is embedded systems. Doesn't anyone > know what an > embedded system is anymore? Granted that the lines between > the old 8/16 > bit hardware and the current 32 bit processors is becoming > blurred, but > for the stuff that I do, having to not code my own malloc(), > or exec(), > is light years away from the alternative: rolling my own proprietary > O/S. > > ... > > TomW > > > -- > Tom Walsh - WN3L - Embedded Systems Consultant > 'www.openhardware.net', 'www.cyberiansoftware.com' > "Windows? No thanks, I have work to do..." > This message resent by the uclinux-dev@uclinux.org list > server http://www.uClinux.org/ > This message resent by the uclinux-dev@uclinux.org list server http://www.uClinux.org/
This archive was generated by hypermail 2.1.4 : Thu Sep 19 2002 - 13:19:28 EDT