824fd85b1c
This test is prompted by incorrect multilib selection for Cortex-M4 (armv7e-m subarchitecture) in Zephyr SDK 0.8.1 toolchain. The idea is do an operation which guaranteedly results in a call to a support routine in libgcc, which is part of multilib set. Long long division is used as such, with a fault produced (see README) when built for BOARD=frdm_k64f. This test now passed with SDK 0.8.2 for frdm_k64f, but is added in the hope of preventing/easing diagnosis of future regressions. Change-Id: I07f01b0e70921703fc0d261fc6c48a2b13b29873 Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
51 lines
1.8 KiB
Plaintext
51 lines
1.8 KiB
Plaintext
Title: Test multilib
|
|
|
|
Description:
|
|
|
|
Some architectures support different ISA variants, each backed a different
|
|
multilib in a same compiler. Selecting wrong multilib may have adverse
|
|
effects on performance, or sometime produce broken executables altogether
|
|
(for example, ARM Cortex-M requires thumb2 multilib and will be broken with
|
|
default ("arm") multilib or "thumb" multlib). This app is a smoke-test
|
|
for selecting non-wrong multilib - it uses operation(s) which guaranteedly
|
|
will call support routine(s) in libgcc and checks for expected result.
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
Building and Running Project:
|
|
|
|
This nanokernel project outputs to the console. It can be built and executed
|
|
on QEMU as follows:
|
|
|
|
make qemu
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
Troubleshooting:
|
|
|
|
Problems caused by out-dated project information can be addressed by
|
|
issuing one of the following commands then rebuilding the project:
|
|
|
|
make clean # discard results of previous builds
|
|
# but keep existing configuration info
|
|
or
|
|
make pristine # discard results of previous builds
|
|
# and restore pre-defined configuration info
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
Sample output:
|
|
|
|
===================================================================
|
|
PASS - main.
|
|
===================================================================
|
|
PROJECT EXECUTION SUCCESSFUL
|
|
|
|
Sample failure output ("thumb" used on Cortex-M instead of "thumb2"):
|
|
|
|
***** USAGE FAULT *****
|
|
Executing thread ID (thread): 0x200002a0
|
|
Faulting instruction address: 0x00000000
|
|
Illegal use of the EPSR
|
|
Fatal fault in essential task ! Spinning...
|