in qemu branch statble-9.2
$ ./build/qemu-system-arm -M microbit -device loader,file=/path/to/heart-hearts-makecode.hex
Segmentation fault
about the error, gdb backtrace like this:
bash-5.1$ gdb ./build/qemu-system-arm
GNU gdb (GDB) 11.2
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Reading symbols from ./build/qemu-system-arm...
warning: File "/home/jaloo/slackware/qemu/qemu/.gdbinit" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
add-auto-load-safe-path /home/jaloo/slackware/qemu/qemu/.gdbinit
line to your configuration file "/home/jaloo/.config/gdb/gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/home/jaloo/.config/gdb/gdbinit".
For more information about this security protection see the
--Type <RET> for more, q to quit, c to continue without paging--
"Auto-loading safe path" section in the GDB manual. E.g., run from the shell:
info "(gdb)Auto-loading safe path"
(gdb) r -M microbit -device loader,file=../microbit/heart-hearts-makecode.hex
Starting program: /home/jaloo/slackware/qemu/qemu/build/qemu-system-arm -M microbit -device loader,file=../microbit/heart-hearts-makecode.hex
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff228d640 (LWP 2380)]
[New Thread 0x7ffff190a640 (LWP 2382)]
Thread 1 "qemu-system-arm" received signal SIGSEGV, Segmentation fault.
0x00007ffff60e53d1 in __memmove_avx_unaligned_erms () from /lib64/libc.so.6
(gdb) bt
#0 0x00007ffff60e53d1 in __memmove_avx_unaligned_erms () at /lib64/libc.so.6
#1 0x0000555556037ed9 in address_space_write_rom_internal
(as=0x555557afe160, addr=0, attrs=..., ptr=0x555557de8290, len=1313804, type=WRITE_DATA) at ../system/physmem.c:3040
#2 0x0000555556037fa7 in address_space_write_rom
(as=0x555557afe160, addr=0, attrs=..., buf=0x555557de8290, len=1313804)
at ../system/physmem.c:3060
#3 0x0000555555977704 in rom_reset (unused=0x0) at ../hw/core/loader.c:1252
#4 0x0000555555986644 in legacy_reset_hold
(obj=0x5555576c12c0, type=RESET_TYPE_COLD) at ../hw/core/reset.c:76
#5 0x00005555560a3938 in resettable_phase_hold
(obj=0x5555576c12c0, opaque=0x0, type=RESET_TYPE_COLD)
at ../hw/core/resettable.c:162
#6 0x00005555560a2049 in resettable_container_child_foreach
(obj=0x555557a2a9f0, cb=0x5555560a3820 <resettable_phase_hold>, opaque=0x0, type=RESET_TYPE_COLD) at ../hw/core/resetcontainer.c:54
#7 0x00005555560a3687 in resettable_child_foreach
(rc=0x5555578ced10, obj=0x555557a2a9f0, cb=0x5555560a3820 <resettable_phase_hold>, opaque=0x0, type=RESET_TYPE_COLD) at ../hw/core/resettable.c:92
#8 0x00005555560a38dd in resettable_phase_hold
(obj=0x555557a2a9f0, opaque=0x0, type=RESET_TYPE_COLD)
at ../hw/core/resettable.c:155
#9 0x00005555560a353c in resettable_assert_reset
--Type <RET> for more, q to quit, c to continue without paging--
(obj=0x555557a2a9f0, type=RESET_TYPE_COLD) at ../hw/core/resettable.c:58
#10 0x00005555560a3494 in resettable_reset
(obj=0x555557a2a9f0, type=RESET_TYPE_COLD) at ../hw/core/resettable.c:45
#11 0x000055555598696e in qemu_devices_reset (type=RESET_TYPE_COLD)
at ../hw/core/reset.c:176
#12 0x0000555555cf5826 in qemu_system_reset (reason=SHUTDOWN_CAUSE_NONE)
at ../system/runstate.c:527
#13 0x000055555597fb9d in qdev_machine_creation_done ()
at ../hw/core/machine.c:1689
#14 0x0000555555cfd197 in qemu_machine_creation_done
(errp=0x5555575be0e0 <error_fatal>) at ../system/vl.c:2690
#15 0x0000555555cfd30f in qmp_x_exit_preconfig
(errp=0x5555575be0e0 <error_fatal>) at ../system/vl.c:2720
#16 0x0000555555cffce8 in qemu_init (argc=5, argv=0x7fffffffdd08)
at ../system/vl.c:3753
#17 0x00005555562479f0 in main (argc=5, argv=0x7fffffffdd08)
at ../system/main.c:47
according to docs/system/arm/nrf.rst
$ qemu-system-arm -M microbit -device loader,file=test.hex
wget https://microbit.org/downloads/heart-hearts-makecode.hex