QEMU arm virt machine was stopped by STMFD command while debug process

Hello, i have a big problem with QEMU arm virtual machine. So...
I run QEMU machine with bare-metal ThreadX fullflash from Texet TM-333 phone  (Spreadtrum platform)
[CODE]qemu-system-arm -S -gdb tcp::1234,ipv4 -drive file=C:\cygwin64\home\flash.bin,if=mtd,format=raw -M palmetto-bmc -cpu arm926 -m 64M[/CODE]
I use palmetto-bmc platform because it have ARM926EJ-S core and support SPI Flash.
Then, i attach to gdb qemu process from IDA and run code step-by-step.
[IMG]https://pp.userapi.com/c847218/v847218546/13ec1c/iSIcre5-js4.jpg[/IMG]

When the IDA run 00032534 STR R11, [R10] command
[IMG]https://pp.userapi.com/c846416/v846416708/133f60/GQzxORvf4Tg.jpg[/IMG]

instead of store R11 on R10 adress, it jump 000328DC STMFD SP!, {R0-R12,LR} instruction...
[IMG]https://pp.userapi.com/c847218/v847218546/13ec26/32A0VcaJywg.jpg[/IMG]
and virt machine not execute new instruction... 
[IMG]https://pp.userapi.com/c850624/v850624111/528f3/N7FTpgloWVU.jpg[/IMG]

and why i did not change flash from n25q256a to n25q032a11 in aspeed.c without rebuild qemu?