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

[Igor]

/*
     * Allocate RAM after the memory controller has checked the size
     * was valid. If not, a default value is used.
     */
    ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size", 
&error_abort);

    memory_region_allocate_system_memory(&bmc->ram1, NULL, "ram1", ram_size);
    memory_region_allocate_system_memory(&bmc->ram2, NULL, "ram2", ram_size);
    memory_region_allocate_system_memory(&bmc->ram3, NULL, "ram3", ram_size);

      memory_region_add_subregion(get_system_memory(), sc->info->sdram_base[1], 
&bmc->ram1);
      memory_region_add_subregion(get_system_memory(), sc->info->sdram_base[0], 
&bmc->ram2);
      memory_region_add_subregion(get_system_memory(), sc->info->sdram_base[2], 
&bmc->ram3);

    object_property_add_const_link(OBJECT(&bmc->soc), "ram1", 
OBJECT(&bmc->ram1), &error_abort);
    object_property_add_const_link(OBJECT(&bmc->soc), "ram2", 
OBJECT(&bmc->ram2), &error_abort);
    object_property_add_const_link(OBJECT(&bmc->soc), "ram3", 
OBJECT(&bmc->ram3), &error_abort);

And I can create 3 RAM section for avoid exeption handler! Maybe any
devices from this adress does not appear in qemu...

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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.

  
  When the IDA run 00032534 STR R11, [R10] command

  
  instead of store R11 on R10 adress, it jump 000328DC STMFD SP!, {R0-R12,LR} 
instruction...

  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?

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