| Title: Test to verify the no multithreading use-case (ARM Only) |
| |
| Description: |
| |
| This test verifies that a Zephyr build without multithreading |
| support (CONFIG_MULTITHREADING=n) works as expected. Only for |
| ARM Cortex-M targets. In detail the test verifies that |
| - system boots to main() |
| - PSP points to the main stack |
| - PSPLIM is set to the main stack base (if applicable) |
| - FPU state is reset (if applicable) |
| - Interrupts are enabled when switching to main() |
| - Interrupts may be registered and serviced |
| - Activating PendSV triggers a Reserved Exception error |
| |
| --------------------------------------------------------------------------- |
| |
| Building and Running Project: |
| |
| This project outputs to the console. It can be built and executed on QEMU as |
| follows: |
| |
| ninja/make run |
| |
| --------------------------------------------------------------------------- |
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| Troubleshooting: |
| |
| Problems caused by out-dated project information can be addressed by |
| issuing one of the following commands then rebuilding the project: |
| |
| ninja/make clean # discard results of previous builds |
| # but keep existing configuration info |
| or |
| ninja/make pristine # discard results of previous builds |
| # and restore pre-defined configuration info |
| |
| --------------------------------------------------------------------------- |
| |
| Sample Output: |
| |
| *** Booting Zephyr OS build zephyr-v2.6.0-349-g032d10878792 *** |
| ARM no-multithreading test |
| E: ***** Reserved Exception ( -2) ***** |
| E: r0/a1: 0x0000001b r1/a2: 0x000044d8 r2/a3: 0xe000ed00 |
| E: r3/a4: 0x10000000 r12/ip: 0x0000000a r14/lr: 0x00001473 |
| E: xpsr: 0x61000000 |
| E: Faulting instruction address (r15/pc): 0x00001510 |
| E: >>> ZEPHYR FATAL ERROR 0: CPU exception on CPU 0 |
| E: Current thread: (nil) (unknown) |
| Caught system error -- reason 0 |
| Available IRQ line: 25 |
| ARM no multithreading test successful |
| =================================================================== |
| PROJECT EXECUTION SUCCESSFUL |
