# arm-elf-gdb linux.2.0.x
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
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This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-elf"...
(gdb) target sim
Loaded ROM boot.rom
Loaded ROM boot.rom
Connected to the simulator.
(gdb) load
Loading section .text, size 0x77b84 vma 0x2000000
Loading section .rodata, size 0x8ddb vma 0x2077b84
Loading section .data, size 0x8fc8 vma 0x2080a60
Start address 0x2000000
Transfer rate: 4507960 bits in <1 sec.
(gdb) run
Starting program: /home/davidm/work/latest/linux-2.0.x/linux 
Found an Atmel AT91F40xxx arm7 processor
Atmel AT91 series microcontroller support (c) 2000,2001 Lineo Inc.
kernel binary is in RAM -- reserving 643k for the kernel
Calibrating delay loop.. ok - 13.00 BogoMIPS
Memory: 1372k/2048k available (224k kernel code, 0k reserved, 196k data)
Swansea University Computer Society NET3.035 for Linux 2.0
NET3: Unix domain sockets 0.13 for Linux NET3.035.
Swansea University Computer Society TCP/IP for NET3.034
IP Protocols: ICMP, UDP, TCP
Linux version 2.0.39.uc2 (davidm@moby) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(-msep-data patches)) 41 Fri Jun 14 10:54:27 EST 2002
Atmel USART driver version 0.99
ttyS0 at 0xfffd0000 (irq = 2) is a builtin Atmel APB USART
ttyS1 at 0xfffcc000 (irq = 3) is a builtin Atmel APB USART
Ramdisk driver initialized : 16 ramdisks of 4096K size
Blkmem copyright 1998,1999 D. Jeff Dionne
Blkmem copyright 1998 Kenneth Albanowski
Blkmem 1 disk images:
0: 4000000-B4BB07FF (RO)
PPP: version 2.3.8 (demand dialling)
TCP compression code copyright 1989 Regents of the University of California
PPP line discipline registered.
PPP MPPE compression registered
SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
CSLIP: code copyright 1989 Regents of the University of California.
VFS: Mounted root (romfs filesystem).
Shell invoked to run file: /etc/rc
Command: hostname GDB-ARMulator
Command: /bin/expand /etc/ramfs.img /dev/ram0
Command: mount -t proc proc /proc
Command: mount -t ext2 /dev/ram0 /var
Command: mkdir /var/tmp
Command: mkdir /var/log
Command: mkdir /var/run
Command: mkdir /var/lock
Command: cat /etc/motd
Welcome to
          ____ _  _
         /  __| ||_|                 
    _   _| |  | | _ ____  _   _  _  _ 
   | | | | |  | || |  _ \| | | |\ \/ /
   | |_| | |__| || | | | | |_| |/    \
   |  ___\____|_||_|_| |_|\____|\_/\_/
   | |
   |_|

GDB/ARMulator support by <davidm@snapgear.com>
For further information check:
http://www.uclinux.org/

Execution Finished, Exiting

Sash command shell (version 1.1.1)
/> ls
bin
dev
etc
home
lib
mnt
proc
sbin
tmp
usr
var
/> ps
  PID PORT STAT SIZE SHARED %CPU COMMAND
    1      S     39K     0K  0.0 init
    2      S      7K     0K  0.0 kflushd
    3      S      7K     0K  0.0 nfsiod
    4      S      7K     0K  0.0 nfsiod
    5      S      7K     0K  0.0 nfsiod
    6      S      7K     0K  0.0 nfsiod
    9   S0 R    140K     0K  0.0 /bin/sh
/> 
Program received signal SIGINT, Interrupt.
schedule () at sched.c:421
421             switch (prev->state) {
(gdb) list
416             /* move an exhausted RR process to be last.. */
417             if (!prev->counter && prev->policy == SCHED_RR) {
418                     prev->counter = prev->priority;
419                     move_last_runqueue(prev);
420             }
421             switch (prev->state) {
422                     case TASK_INTERRUPTIBLE:
423                             if (prev->signal & ~prev->blocked)
424                                     goto makerunnable;
425                             timeout = prev->timeout;
(gdb) break do_IRQ
Breakpoint 1 at 0x2001e6c: file irq.c, line 207.
(gdb) continue
Continuing.

Breakpoint 1, do_IRQ (irq=34096528, regs=0x20898e0) at irq.c:207
207     {
(gdb) next
208             struct irqaction * action = *(irq + irq_action);
(gdb) 
211             kstat.interrupts[irq]++;
(gdb) list
206     asmlinkage void do_IRQ(int irq, struct pt_regs * regs)
207     {
208             struct irqaction * action = *(irq + irq_action);
209             int do_random = 0;
210
211             kstat.interrupts[irq]++;
212
213             while (action) {
214                     do_random |= action->flags;
215                     action->handler(irq, action->dev_id, regs);
(gdb) delete
Delete all breakpoints? (y or n) y
(gdb) continue
Continuing.

/> 
/> ls
bin
dev
etc
home
lib
mnt
proc
sbin
tmp
usr
var
/>