zephyr

History

Peter Mitsis 9d63adf3ea Renames supported platform configurations Renames supported platform configurations to conform to new platform configuration naming scheme. Example usage with PLATFORM_CONFIG: make PLATFORM_CONFIG=basic_cortex_m3 make PLATFORM_CONFIG=basic_atom make PLATFORM_CONFIG=basic_minuteia make PLATFORM_CONFIG=galileo xxx_ti_lm3s6965_defconfig -> xxx_basic_cortex_m3_defconfig xxx_generic_pc_atom_n28xx_defconfig -> xxx_basic_atom_defconfig xxx_generic_pc_minuteia_defconfig -> xxx_basic_minuteia_defconfig xxx_quark_defconfig -> xxx_galileo_defconfig Change-Id: I696eb8b9ad9a72d7a72efbe1341ce23500335764 Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>		2016-02-05 20:14:39 -05:00
..
src	doxygen: add @brief and capitalize	2016-02-05 20:14:33 -05:00
Makefile	Renames supported platform configurations	2016-02-05 20:14:39 -05:00
prj_x86.conf	Kbuild: Updates to the microkernel config overlays.	2016-02-05 20:14:07 -05:00
prj.mdef	Rename VPF files to use MDEF file extension	2016-02-05 20:14:15 -05:00
README.txt	Fixed make target for running in qemu (microkernel)	2016-02-05 20:14:16 -05:00

README.txt

Title: test_fp_sharing

Description:

This test uses two tasks to independently compute pi, while two other tasks
load and store floating point registers and check for corruption. This tests
the ability of tasks to safely share floating point hardware resources, even
when switching occurs preemptively. (Note that both sets of tests run
concurrently even though they report their progress at different times.)

The demonstration utilizes microkernel resource APIs, timers, semaphores,
round robin scheduling, and floating point support.

--------------------------------------------------------------------------------

Building and Running Project:

This microkernel 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:

Floating point sharing tests started
===================================================================
Pi calculation OK after 50 (high) + 1 (low) tests (computed 3.141594)
Load and store OK after 100 (high) + 29695 (low) tests
Pi calculation OK after 150 (high) + 2 (low) tests (computed 3.141594)
Load and store OK after 200 (high) + 47593 (low) tests
Pi calculation OK after 250 (high) + 4 (low) tests (computed 3.141594)
Load and store OK after 300 (high) + 66674 (low) tests
Pi calculation OK after 350 (high) + 5 (low) tests (computed 3.141594)
Load and store OK after 400 (high) + 83352 (low) tests
Pi calculation OK after 450 (high) + 7 (low) tests (computed 3.141594)
Load and store OK after 500 (high) + 92290 (low) tests
===================================================================
PROJECT EXECUTION SUCCESSFUL