[Qemu-devel] [Bug 1805445] [NEW] QEMU arm virt machine was stopped by STMFD command while debug process

[Igor]

Public bug reported:

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?

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: arm emulation stop

** Attachment added: "3.jpg"
   https://bugs.launchpad.net/bugs/1805445/+attachment/5216795/+files/3.jpg

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1805445

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

Status in QEMU:
  New

Bug description:
  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?

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1805445/+subscriptions