Show Register Values of QEMU Emulator
To accomplish it, you can pass -monitor stdio option to qemu-system-TARGET. This option provides a monitor console for interacting with QEMU. And then info registers command prints the register values to stdout.
$ qemu-system-x86_64 -monitor stdio -kernel kernel.elf (qemu) info registers EAX=cafebabe EBX=00009500 ECX=0010000c EDX=00000511 Also, it can be done with gdb. If -s option was passed, QEMU listen on port 1234 and wait for gdb connection.
$ qemu-system-x86_64 -s -kernel kernel.elf & $ gdb (gdb) target remote localhost:1234 (gdb) info registers eax 0xcafebabe -889275714 ecx 0x10000c 1048588 edx 0x511 1297 ebx 0x9500 38144 Now you can make sure the value of EAX is 0xcafebabe.
