freebsd kernel with SKQ
52c24af701
- Use the system headers method for Elf32/Elf64 symbol compatability - get rid of the UPRINTF debugging. - check the ELF header for compatability much more completely - optimize the section mapper. Use the same direct VM interfaces that imgact_aout.c and kern_exec.c use. - Check the return codes from the vm_* functions better. Some return KERN_* results, not an errno. - prefault the page tables to reduce startup faults on page tables like a.out does. - reset the segment protection to zero for each loop, otherwise each segment could get progressively more privs. (eg: if the first was read/write/execute, and the second was meant to be read/execute, the bug would make the second r/w/x too. In practice this was not a problem because executables are normally laid out with text first.) - Don't impose arbitary limits. Use the limits on headers imposed by the need to fit them into one page. - Remove unused switch() cases now that the verbose debugging is gone. I've been using an earlier version of this for a month or so. This sped up ELF exec speed a bit for me but I found it hard to get consistant benchmarks when I tested it last (a few weeks ago). I'm still bothered by the page read out of order caused by the transition from data to bss. This which requires either part filling the transition page or clearing the remainder. |
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| bin | ||
| contrib | ||
| crypto | ||
| etc | ||
| games | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| kerberosIV | ||
| lib | ||
| libexec | ||
| lkm | ||
| release | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| COPYRIGHT | ||
| Makefile | ||
| Makefile.inc0 | ||
| Makefile.inc1 | ||
| Makefile.upgrade | ||
| README | ||
This is the top level of the FreeBSD source directory. This file was last revised on: $Id: README,v 1.12 1998/06/30 08:08:05 jkh Exp $ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel and the contents of /etc. Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel with config(8) is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/handbook/kernelconfig.html And in the config(8) man page. The sample kernel configuration files reside in the sys/i386/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file LINT contains entries for all possible devices, not just those commonly used, and is meant more as a general reference than an actual kernel configuration file (a kernel built from it wouldn't even run). Source Roadmap: --------------- bin System/User commands. contrib Packages contributed by 3rd parties. crypto Export controlled stuff (see crypto/README). etc Template files for /etc games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberosIV Kerberos package. lib System libraries. libexec System daemons. lkm Loadable Kernel Modules. release Release building Makefile & associated tools. sbin System commands. secure DES and DES-related utilities - NOT FOR EXPORT! share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/handbook/synching.html