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Appendix M: PikeOS Topics
M.3 Building an Ada application on PikeOS using
GNATbench
This section will show how to use GNATbench to setup an Ada project similar
to the one described in the previous section.
Click on File -> New -> Others and select Ada / Ada Project. Click on next.
Give demo for the project name. Click on next. Give hello for the name of the
Ada main subprogram, and check the first checkbox (generate the file). Click on
next. Don’t change anything for the directories settings, click on next. Check
the third checkbox (Drive Build with a Makefile). Click on the scan button
to refresh the names of the toolchains installed on the system, and select the
powerpc-elf-pikeos toolchain (make sure that it’s the only one checked). Hit
finish.
A new project named demo should have been created. Open the file
src/hello.adb, and paste the Ada code given in the previous section. Create
a new file at the same location, last chance handler.c, and paste the corresponding code.
Open the file demo/Makefile. Change the build command to:
build:
powerpc-elf-pikeos-gcc -c -g src/last_chance_handler.c \
-I/opt/pikeos-3.0/target/ppc/oea/include/ \
-I/opt/pikeos-3.0/target/ppc/oea/include/stand/ \
-o obj/last_chance_handler.o
$(GNATMAKE) -d -P "$(GPRPATH)" -largs obj/last_chance_handler.o
cp obj/hello ../kernel/target/pikeos
Right-click on the project demo, from the project navigator, and select Build
Current Project. Then right-click on the target directory of the kernel project
and select Refresh.
M.4 Running an Ada application on PikeOS
PikeOS and CODEO are integrated with a simulator called QEMU. This can be a
simple way to run and test a PikeOS application.
In the previous sections, we have seen how to create a PikeOS kernel targeted
to this simulator, embedding a simple Ada application. The following command
should run this kernel on QEMU:
$ /opt/pikeos-3.0/share/qemu/bin/qemu-system-ppc -M prep_bare -serial stdio -nographic no-reboot -kernel boot/pikeos-qemu-ppc-qemu
PikeOS (C) Copyright 1998-2009 SYSGO AG, Germany
Build: S2151-3.0-443
Arch: PowerPC OEA
Platform: QEMU PPC PREP
Features: RETAIL TRACER-SYSCALL KERNEL-TRACING
PikeOS System Software starting. Build: S2151-3.0-151
PikeOS System Software up and running.
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