cat /proc/iomem

This is command shows the io memory map
This is the virtual address (linear address in Linux).
For example, it tells you the virtual address of kernel code.
If you want to get the kernel code, you could write a kenel module, and read the code out.


[root@localhost fengweiWorkSpace]# cat /proc/iomem
00010000-0009e3ff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000cefff : Video ROM
000d3800-000d3fff : Adapter ROM
000f0000-000fffff : System ROM
00100000-7ddff7ff : System RAM
  00400000-00620dc5 : Kernel code
  00620dc6-007039fb : Kernel data
7ddff800-7de53bff : ACPI Non-volatile Storage
7de53c00-7de55bff : ACPI Tables
7de55c00-7dffffff : reserved
80000000-800fffff : PCI Bus #01
  80000000-8001ffff : 0000:01:00.0
  80020000-8002ffff : 0000:01:00.0
80100000-801fffff : PCI Bus #03
  80100000-8010ffff : 0000:03:00.0
  80110000-80110fff : 0000:03:02.0
80200000-8021ffff : 0000:00:19.0
  80200000-8021ffff : e1000e
80220000-80223fff : 0000:00:1b.0
  80220000-80223fff : ICH HD audio
80224000-80224fff : 0000:00:03.3
80225000-80225fff : 0000:00:19.0
  80225000-80225fff : e1000e
80226000-802263ff : 0000:00:1a.7
  80226000-802263ff : ehci_hcd
80226400-802264ff : 0000:00:1f.3
d0000000-dfffffff : PCI Bus #01
  d0000000-dfffffff : 0000:01:00.0
e0000000-fed003ff : reserved
fed20000-fed9ffff : reserved
fedad000-fedad00f : 0000:00:03.0
fee00000-feefffff : reserved
ff970000-ff9707ff : 0000:00:1f.2
  ff970000-ff9707ff : ahci
ff980800-ff980bff : 0000:00:1d.7
  ff980800-ff980bff : ehci_hcd
ffb00000-ffffffff : reserved