What do you think? Can this be added to arm-semi. If this is not true, it can be removed from the first conditional statement. The value 0x20026 means ADP_Stopped_ ApplicationExit, and, if I understood it right, it means that the program terminated successfully. Would it be possible to no longer ignore the code passed to 0x18, and if it is non zero, to call exit() with a different value? The output with the error massage is in the following. This kludge is more or less functional, but is quite inconvenient.Īfter checking the ARM manuals, I discovered that SYS_EXIT is not standard, and the 0x18 code used for it originally was used for angel_SWIreason _ReportExceptio n, which has a slightly different purpose. qemu-system-aarch64 works very well, but I failed to use qemu-system-arm, even to check the machine models it supports. To solve my problem I temporarily made a patch, and for cases that should return non zero codes, I call an unsupported BKPT instruction, which makes QEMU abort, and pass an non zero code (1) back to the operating system. ![]() I checked the arm-semi.c code and for SYS_EXIT and I discovered that the parameter passed is ignored and it always calls exit(0): You can use either qemu-system-arm or qemu-system-aarch64 to simulate a 32-bit Arm machine: in general, command lines that work for qemu-system-arm will behave the same when used with qemu-system-aarch64. Use the qemu-system-aarch64 executable to simulate a 64-bit Arm machine. Note that the terminal does echos of the input. QEMU can emulate both 32-bit and 64-bit Arm CPUs. However I have a problem with passing the failure code back to the operating system, to drive the continuous integration framework. Currently working environments are the raspberry pi (v3 tested) and the qemu-arm emulator on a 圆4 PC system. Two volumes are required, one static one for the UEFI firmware, and another dynamic one to store variables. Up to now everything is fine with the emulation. sudo apt-get install qemu-system-arm qemu-efi Now you'll need to create pflash volumes for UEFI. ![]() Now I expanded the testing environment to run some of these tests compiled for ARM, under QEMU, with the tracing messages forwarded via the semihosting API. and the ext4 one looks like UUID'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'. 5) Edit /etc/fstab and create /boot/startup.nsh files. 4) Mount the partitions and extract the Arch Linux ARM tarball to them. In my embedded ARM project I have a bunch of unit tests that I run in a POSIX synthetic environment, and, as usual for POSIX processes, these tests return 0 for success and !=0 for error. 3) Become root, create the loop devices and format the partitions of the image.
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