b273803537
Add some missed style fixes in inline comments and test README. Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
104 lines
4 KiB
Plaintext
104 lines
4 KiB
Plaintext
Title: Test to verify code fault handling in ISR execution context
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and the behavior of irq_lock() and irq_unlock() when invoked
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from User Mode. (ARM Only)
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Description:
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The first test verifies that we can handle system fault conditions
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while running in handler mode (i.e. in an ISR). Only for ARM
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Cortex-M targets.
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The test also verifies
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- the behavior of the spurious interrupt handler, as well as the
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ARM spurious exception handler.
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- the ability of the Cortex-M fault handling mechanism to detect
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stack overflow errors explicitly due to exception frame context
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stacking (that is when the processor reports only the Stacking
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Error and not an additional Data Access Violation error with a
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valid corresponding MMFAR address value).
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The second test verifies that threads in user mode, despite being able to call
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the irq_lock() and irq_unlock() functions without triggering a CPU fault,
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they won't be able to read or modify the current IRQ locking status.
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---------------------------------------------------------------------------
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Building and Running Project:
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This project outputs to the console. It can be built and executed on QEMU as
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follows:
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ninja/make run
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---------------------------------------------------------------------------
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Troubleshooting:
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Problems caused by out-dated project information can be addressed by
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issuing one of the following commands then rebuilding the project:
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ninja/make clean # discard results of previous builds
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# but keep existing configuration info
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or
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ninja/make pristine # discard results of previous builds
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# and restore pre-defined configuration info
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---------------------------------------------------------------------------
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Sample Output:
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*** Booting Zephyr OS build v2.3.0-rc1-295-g630f69889088 ***
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Running test suite arm_interrupt
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===================================================================
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starting test - test_arm_interrupt
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Available IRQ line: 70
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E: >>> ZEPHYR FATAL ERROR 1: Unhandled interrupt on CPU 0
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E: Current thread: 0x20400190 (unknown)
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Caught system error -- reason 1
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E: r0/a1: 0x00000003 r1/a2: 0x20401d6c r2/a3: 0x00000003
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E: r3/a4: 0x20401af8 r12/ip: 0x0295a8d1 r14/lr: 0x00401ad3
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E: xpsr: 0x61000056
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E: Faulting instruction address (r15/pc): 0x00400622
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E: >>> ZEPHYR FATAL ERROR 3: Kernel oops on CPU 0
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E: Fault during interrupt handling
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E: Current thread: 0x20400190 (unknown)
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Caught system error -- reason 3
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E: r0/a1: 0x00000004 r1/a2: 0x20401d6c r2/a3: 0x00000004
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E: r3/a4: 0x20401af8 r12/ip: 0x00000000 r14/lr: 0x00401ad3
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E: xpsr: 0x61000056
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E: Faulting instruction address (r15/pc): 0x00400640
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E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
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E: Fault during interrupt handling
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E: Current thread: 0x20400190 (unknown)
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Caught system error -- reason 4
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ASSERTION FAIL [0] @ ../src/arm_interrupt.c:49
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Intentional assert
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E: r0/a1: 0x00000004 r1/a2: 0x00000031 r2/a3: 0x80000000
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E: r3/a4: 0x00000056 r12/ip: 0x00000000 r14/lr: 0x00401ad3
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E: xpsr: 0x41000056
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E: Faulting instruction address (r15/pc): 0x00409b34
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E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
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E: Fault during interrupt handling
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E: Current thread: 0x20400190 (unknown)
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Caught system error -- reason 4
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E: ***** MPU FAULT *****
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E: Stacking error (context area might be not valid)
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E: r0/a1: 0x2e706106 r1/a2: 0x739e3f03 r2/a3: 0xf1c99979
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E: r3/a4: 0xe9973b26 r12/ip: 0x87d3b16f r14/lr: 0x01c98b2b
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E: xpsr: 0x80608800
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E: Faulting instruction address (r15/pc): 0x885e4061
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E: >>> ZEPHYR FATAL ERROR 2: Stack overflow on CPU 0
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E: Current thread: 0x20400190 (unknown)
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Caught system error -- reason 2
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PASS - test_arm_interrupt
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===================================================================
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starting test - test_arm_user_interrupt
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PASS - test_arm_user_interrupt
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===================================================================
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Test suite arm_interrupt succeeded
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===================================================================
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PROJECT EXECUTION SUCCESSFUL
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