[Qemu-discuss] [Qemu-discussion] QEMU via GDB

[davide . ferraretto]

Dear all, 
I am trying to debug QEMU via GDB. 
 
 
I configured and compiled QEMU with debugging flags, i.e., 
# CFLAGS="-g3 -O0" ./configure --disable-gfx-check 
 
 
and run gdb: 
 
 
# gdb ./i386-linux-user/qemu-i386 
 
 
(gdb) break main 
(gdb) run 
 
Starting program: /home/test/femu/i386-linux-user/qemu-i386 
Failed to read a valid object file image from memory. 
Warning: 
Cannot insert breakpoint 1. 
Error accessing memory address 0x2f7df: Input/output error. 
 
 
Is  there any extra flag to be specified with the GDB for QEMU debugging?  I  am wondering if the QEMU virtual machine creates any problem to the   GDB virtual machine. 
 
 
Thanks.