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Ciro Santilli 六四事件 法轮功
171
README.adoc
171
README.adoc
@@ -977,23 +977,38 @@ Build, run and example, and clean it in-tree with:
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....
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....
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cd userland
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cd userland
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./build
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./build c/hello
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./c/hello.out
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./c/hello.out
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./build --clean
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./build --clean
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....
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....
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Source: link:userland/c/hello.c[].
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Source: link:userland/c/hello.c[].
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Or build just one directory:
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Build an entire directory:
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....
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....
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./build c
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./build c
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....
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....
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or just one executable:
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Build the current directory:
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....
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....
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./build c/hello
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./build
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....
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Note however that this would try to build the link:userland/libs/[] folder, which depends on certain libraries being installed on the host, e.g. <<blas>>.
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You can install those libraries and do the build in one go with:
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....
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cd linux-kernel-module-cheat
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./build --download-dependencies userland-host
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....
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If you modify a dependency that is not currently considered such as a header file, force the rebuild with:
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....
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./build --force-rebuild
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....
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....
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Do a more clean out of tree build and run the program instead:
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Do a more clean out of tree build and run the program instead:
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@@ -1003,11 +1018,7 @@ Do a more clean out of tree build and run the program instead:
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"$(./getvar --userland-build-id host userland_build_dir)/hello.out"
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"$(./getvar --userland-build-id host userland_build_dir)/hello.out"
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....
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....
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If you modify a dependency that is not currently considered such as a header file, force the rebuild with:
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Here we put the host executables in a separate <<build-variants,build-variant>> to avoid conflict with Buildroot builds.
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....
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./build --force-rebuild
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....
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===== Userland setup getting started full system
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===== Userland setup getting started full system
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@@ -1699,7 +1710,7 @@ Alternatively, if the module panics before you can read `/proc/modules`, there i
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....
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....
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echo 8 > /proc/sys/kernel/printk
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echo 8 > /proc/sys/kernel/printk
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echo 'file kernel/module.c +p' > /sys/kernel/debug/dynamic_debug/control
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echo 'file kernel/module.c +p' > /sys/kernel/debug/dynamic_debug/control
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./myinsmod.out hello.ko
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./linux/myinsmod.out hello.ko
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....
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....
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And then search for a line of type:
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And then search for a line of type:
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@@ -1874,12 +1885,12 @@ Non-init process:
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* Shell 2:
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* Shell 2:
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+
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+
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....
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....
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./run-gdb-user myinsmod main
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./run-gdb-user linux/myinsmod main
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....
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....
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* Shell 1 after the boot finishes:
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* Shell 1 after the boot finishes:
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+
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+
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....
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....
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./myinsmod.out hello.ko
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./linux/myinsmod.out hello.ko
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....
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....
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This is the least reliable setup as there might be other processes that use the given virtual address.
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This is the least reliable setup as there might be other processes that use the given virtual address.
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@@ -1995,10 +2006,10 @@ For a more minimal baremetal multicore setup, see: <<arm-multicore>>.
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We can set and get which cores the Linux kernel allows a program to run on with `sched_getaffinity` and `sched_setaffinity`:
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We can set and get which cores the Linux kernel allows a program to run on with `sched_getaffinity` and `sched_setaffinity`:
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....
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....
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./run --cpus 2 --eval-after './sched_getaffinity.out'
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./run --cpus 2 --eval-after './linux/sched_getaffinity.out'
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....
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....
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Source: link:userland/sched_getaffinity.c[]
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Source: link:userland/linux/sched_getaffinity.c[]
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Sample output:
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Sample output:
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@@ -2025,7 +2036,7 @@ The number of cores is modified as explained at: <<number-of-cores>>
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--config 'BR2_PACKAGE_UTIL_LINUX=y' \
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--config 'BR2_PACKAGE_UTIL_LINUX=y' \
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--config 'BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS=y' \
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--config 'BR2_PACKAGE_UTIL_LINUX_SCHEDUTILS=y' \
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;
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;
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./run --eval-after 'taskset -c 1,1 ./sched_getaffinity.out'
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./run --eval-after 'taskset -c 1,1 ./linux/sched_getaffinity.out'
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....
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....
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output:
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output:
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@@ -2041,20 +2052,20 @@ so we see that the affinity was restricted to the second core from the start.
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Let's do a QEMU observation to justify this example being in the repository with <<gdb-step-debug-userland-non-init,userland breakpoints>>.
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Let's do a QEMU observation to justify this example being in the repository with <<gdb-step-debug-userland-non-init,userland breakpoints>>.
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We will run our `./sched_getaffinity.out` infinitely many time, on core 0 and core 1 alternatively:
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We will run our `./linux/sched_getaffinity.out` infinitely many time, on core 0 and core 1 alternatively:
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....
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....
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./run \
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./run \
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--cpus 2 \
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--cpus 2 \
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--wait-gdb \
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--wait-gdb \
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--eval-after 'i=0; while true; do taskset -c $i,$i ./sched_getaffinity.out; i=$((! $i)); done' \
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--eval-after 'i=0; while true; do taskset -c $i,$i ./linux/sched_getaffinity.out; i=$((! $i)); done' \
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;
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;
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....
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....
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on another shell:
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on another shell:
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....
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....
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./run-gdb-user "$(./getvar userland_build_dir)/sched_getaffinity.out" main
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./run-gdb-user "$(./getvar userland_build_dir)/linux/sched_getaffinity.out" main
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....
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....
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Then, inside GDB:
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Then, inside GDB:
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@@ -2079,13 +2090,13 @@ We should also try it out with kernel modules: https://stackoverflow.com/questio
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TODO we then tried:
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TODO we then tried:
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....
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....
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./run --cpus 2 --eval-after './sched_getaffinity_threads.out'
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./run --cpus 2 --eval-after './linux/sched_getaffinity_threads.out'
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....
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....
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and:
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and:
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....
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....
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./run-gdb-user "$(./getvar userland_build_dir)/sched_getaffinity_threads.out"
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./run-gdb-user "$(./getvar userland_build_dir)/linux/sched_getaffinity_threads.out"
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....
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....
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|
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to switch between two simultaneous live threads with different affinities, it just didn't break on our threads:
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to switch between two simultaneous live threads with different affinities, it just didn't break on our threads:
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@@ -2431,10 +2442,10 @@ First build `gdbserver` into the root filesystem:
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./build-buildroot --config 'BR2_PACKAGE_GDB=y'
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./build-buildroot --config 'BR2_PACKAGE_GDB=y'
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||||||
....
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....
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||||||
|
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Then on guest, to debug link:userland/myinsmod.c[]:
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Then on guest, to debug link:userland/linux/myinsmod.c[]:
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....
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....
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./gdbserver.sh ./myinsmod.out hello.ko
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./gdbserver.sh ./linux/myinsmod.out hello.ko
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....
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....
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|
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Source: link:rootfs_overlay/lkmc/gdbserver.sh[].
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Source: link:rootfs_overlay/lkmc/gdbserver.sh[].
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@@ -2442,13 +2453,13 @@ Source: link:rootfs_overlay/lkmc/gdbserver.sh[].
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And on host:
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And on host:
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....
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....
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./run-gdbserver myinsmod
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./run-gdbserver linux/myinsmod
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....
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....
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|
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or alternatively with the full path:
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or alternatively with the full path:
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....
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....
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./run-gdbserver "$(./getvar userland_build_dir)/myinsmod.out"
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./run-gdbserver "$(./getvar userland_build_dir)/linux/myinsmod.out"
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||||||
....
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....
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||||||
|
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||||||
https://reverseengineering.stackexchange.com/questions/8829/cross-debugging-for-arm-mips-elf-with-qemu-toolchain/16214#16214
|
https://reverseengineering.stackexchange.com/questions/8829/cross-debugging-for-arm-mips-elf-with-qemu-toolchain/16214#16214
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@@ -2587,7 +2598,7 @@ traps: ring0.out[55] general protection ip:40054c sp:7fffffffec20 error:0 in rin
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Sources:
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Sources:
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|
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||||||
* link:kernel_modules/ring0.c[]
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* link:kernel_modules/ring0.c[]
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* link:kernel_modules/ring0.h[]
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* link:include/ring0.h[]
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* link:userland/ring0.c[]
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* link:userland/ring0.c[]
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|
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In both cases, we attempt to run the exact same code which is shared on the `ring0.h` header file.
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In both cases, we attempt to run the exact same code which is shared on the `ring0.h` header file.
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@@ -2832,14 +2843,14 @@ ____
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And you can try it out with:
|
And you can try it out with:
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||||||
|
|
||||||
....
|
....
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||||||
./run --kernel-cli 'init=/lkmc/init_env_poweroff.out - asdf=qwer zxcv'
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./run --kernel-cli 'init=/lkmc/linux/init_env_poweroff.out - asdf=qwer zxcv'
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....
|
....
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||||||
|
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Output:
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Output:
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||||||
|
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||||||
....
|
....
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||||||
args:
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args:
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||||||
/lkmc/init_env_poweroff.out
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/lkmc/linux/init_env_poweroff.out
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-
|
-
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zxcv
|
zxcv
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|
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@@ -2849,7 +2860,7 @@ TERM=linux
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asdf=qwer
|
asdf=qwer
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....
|
....
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||||||
|
|
||||||
Source: link:userland/init_env_poweroff.c[].
|
Source: link:userland/linux/init_env_poweroff.c[].
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|
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==== init arguments
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==== init arguments
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|
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@@ -2858,14 +2869,14 @@ The annoying dash `-` gets passed as a parameter to `init`, which makes it impos
|
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Arguments with dots that come after `-` are still treated specially (of the form `subsystem.somevalue`) and disappear, from args, e.g.:
|
Arguments with dots that come after `-` are still treated specially (of the form `subsystem.somevalue`) and disappear, from args, e.g.:
|
||||||
|
|
||||||
....
|
....
|
||||||
./run --kernel-cli 'init=/lkmc/init_env_poweroff.out - /lkmc/linux/poweroff.out'
|
./run --kernel-cli 'init=/lkmc/linux/init_env_poweroff.out - /lkmc/linux/poweroff.out'
|
||||||
....
|
....
|
||||||
|
|
||||||
outputs:
|
outputs:
|
||||||
|
|
||||||
....
|
....
|
||||||
args
|
args
|
||||||
/lkmc/init_env_poweroff.out
|
/lkmc/linux/init_env_poweroff.out
|
||||||
-
|
-
|
||||||
ab
|
ab
|
||||||
....
|
....
|
||||||
@@ -3380,12 +3391,12 @@ See also: <<user-mode-simulation-with-glibc>>
|
|||||||
|
|
||||||
=== QEMU user mode getting started
|
=== QEMU user mode getting started
|
||||||
|
|
||||||
Let's run link:userland/print_argv.c[] built with the Buildroot toolchain on QEMU user mode:
|
Let's run link:userland/c/print_argv.c[] built with the Buildroot toolchain on QEMU user mode:
|
||||||
|
|
||||||
....
|
....
|
||||||
./build user-mode-qemu
|
./build user-mode-qemu
|
||||||
./run \
|
./run \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3413,12 +3424,12 @@ The commands are analogous to full system <<gdb>>, e.g. without tmux:
|
|||||||
|
|
||||||
....
|
....
|
||||||
./run \
|
./run \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
--wait-gdb \
|
--wait-gdb \
|
||||||
;
|
;
|
||||||
./run-gdb \
|
./run-gdb \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
main
|
main
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3427,7 +3438,7 @@ or with <<tmux>>:
|
|||||||
|
|
||||||
....
|
....
|
||||||
./run \
|
./run \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
--tmux-args main \
|
--tmux-args main \
|
||||||
--wait-gdb \
|
--wait-gdb \
|
||||||
@@ -3449,7 +3460,7 @@ sudo apt-get install gcc-aarch64-linux-gnu qemu-system-aarch64
|
|||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--qemu-which host
|
--qemu-which host
|
||||||
--userland-build-id host \
|
--userland-build-id host \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3544,7 +3555,7 @@ Example:
|
|||||||
./run \
|
./run \
|
||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--static \
|
--static \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3567,7 +3578,7 @@ So programs that rely on those libraries might not compile as GCC can't find the
|
|||||||
For example, if we try to build <<blas>> statically:
|
For example, if we try to build <<blas>> statically:
|
||||||
|
|
||||||
....
|
....
|
||||||
./build-userland --has-package openblas --static -- libs/openblas_hello
|
./build-userland --has-package openblas --static -- libs/openblas/hello
|
||||||
....
|
....
|
||||||
|
|
||||||
it fails with:
|
it fails with:
|
||||||
@@ -3583,7 +3594,7 @@ It's nice when <<gdb,the obvious>> just works, right?
|
|||||||
....
|
....
|
||||||
./run \
|
./run \
|
||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
--wait-gdb \
|
--wait-gdb \
|
||||||
;
|
;
|
||||||
@@ -3594,7 +3605,7 @@ and on another shell:
|
|||||||
....
|
....
|
||||||
./run-gdb \
|
./run-gdb \
|
||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
main \
|
main \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3605,7 +3616,7 @@ Or alternatively, if you are using <<tmux>>, do everything in one go with:
|
|||||||
./run \
|
./run \
|
||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--tmux-args main \
|
--tmux-args main \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
--wait-gdb \
|
--wait-gdb \
|
||||||
;
|
;
|
||||||
@@ -3643,7 +3654,7 @@ So let's just play with some static ones:
|
|||||||
./run \
|
./run \
|
||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--emulator gem5 \
|
--emulator gem5 \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3657,7 +3668,7 @@ TODO: how to escape spaces on the command line arguments?
|
|||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--emulator gem5 \
|
--emulator gem5 \
|
||||||
--static \
|
--static \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
--userland-args 'asdf "qw er"' \
|
--userland-args 'asdf "qw er"' \
|
||||||
--wait-gdb \
|
--wait-gdb \
|
||||||
;
|
;
|
||||||
@@ -3665,7 +3676,7 @@ TODO: how to escape spaces on the command line arguments?
|
|||||||
--arch aarch64 \
|
--arch aarch64 \
|
||||||
--emulator gem5 \
|
--emulator gem5 \
|
||||||
--static \
|
--static \
|
||||||
--userland print_argv \
|
--userland c/print_argv \
|
||||||
main \
|
main \
|
||||||
;
|
;
|
||||||
....
|
....
|
||||||
@@ -3794,18 +3805,18 @@ If you are feeling raw, you can insert and remove modules with our own minimal m
|
|||||||
|
|
||||||
....
|
....
|
||||||
# init_module
|
# init_module
|
||||||
./myinsmod.out hello.ko
|
./linux/myinsmod.out hello.ko
|
||||||
# finit_module
|
# finit_module
|
||||||
./myinsmod.out hello.ko "" 1
|
./linux/myinsmod.out hello.ko "" 1
|
||||||
./myrmmod.out hello
|
./linux/myrmmod.out hello
|
||||||
....
|
....
|
||||||
|
|
||||||
which teaches you how it is done from C code.
|
which teaches you how it is done from C code.
|
||||||
|
|
||||||
Source:
|
Source:
|
||||||
|
|
||||||
* link:userland/myinsmod.c[]
|
* link:userland/linux/myinsmod.c[]
|
||||||
* link:userland/myrmmod.c[]
|
* link:userland/linux/myrmmod.c[]
|
||||||
|
|
||||||
The Linux kernel offers two system calls for module insertion:
|
The Linux kernel offers two system calls for module insertion:
|
||||||
|
|
||||||
@@ -5252,7 +5263,7 @@ But the awesome `CONFIG_DYNAMIC_DEBUG=y` option which we enable by default allow
|
|||||||
....
|
....
|
||||||
echo 8 > /proc/sys/kernel/printk
|
echo 8 > /proc/sys/kernel/printk
|
||||||
echo 'file kernel/module.c +p' > /sys/kernel/debug/dynamic_debug/control
|
echo 'file kernel/module.c +p' > /sys/kernel/debug/dynamic_debug/control
|
||||||
./myinsmod.out hello.ko
|
./linux/myinsmod.out hello.ko
|
||||||
....
|
....
|
||||||
|
|
||||||
and we have a shortcut at:
|
and we have a shortcut at:
|
||||||
@@ -6375,7 +6386,7 @@ Outcome: `jiffies` gets printed to stdout every second from userland.
|
|||||||
Sources:
|
Sources:
|
||||||
|
|
||||||
* link:kernel_modules/poll.c[]
|
* link:kernel_modules/poll.c[]
|
||||||
* link:kernel_modules/poll.c[]
|
* link:include/poll.h[]
|
||||||
* link:rootfs_overlay/lkmc/poll.sh[]
|
* link:rootfs_overlay/lkmc/poll.sh[]
|
||||||
|
|
||||||
Typically, we are waiting for some hardware to make some piece of data available available to the kernel.
|
Typically, we are waiting for some hardware to make some piece of data available available to the kernel.
|
||||||
@@ -6404,8 +6415,8 @@ Outcome: the test passes:
|
|||||||
Sources:
|
Sources:
|
||||||
|
|
||||||
* link:kernel_modules/ioctl.c[]
|
* link:kernel_modules/ioctl.c[]
|
||||||
* link:kernel_modules/ioctl.h[]
|
* link:include/ioctl.h[]
|
||||||
* link:userland/ioctl.c[]
|
* link:userland/kernel_modules/ioctl.c[]
|
||||||
* link:rootfs_overlay/lkmc/ioctl.sh[]
|
* link:rootfs_overlay/lkmc/ioctl.sh[]
|
||||||
|
|
||||||
`ioctl` is one of the most important methods of communication with real device drivers, which often take several fields as input.
|
`ioctl` is one of the most important methods of communication with real device drivers, which often take several fields as input.
|
||||||
@@ -6489,8 +6500,8 @@ Outcome: the test passes:
|
|||||||
Sources:
|
Sources:
|
||||||
|
|
||||||
* link:kernel_modules/anonymous_inode.c[]
|
* link:kernel_modules/anonymous_inode.c[]
|
||||||
* link:kernel_modules/anonymous_inode.h[]
|
* link:include/anonymous_inode.h[]
|
||||||
* link:userland/anonymous_inode.c[]
|
* link:userland/kernel_modules/anonymous_inode.c[]
|
||||||
* link:rootfs_overlay/lkmc/anonymous_inode.sh[]
|
* link:rootfs_overlay/lkmc/anonymous_inode.sh[]
|
||||||
|
|
||||||
This example gets an anonymous inode via <<ioctl>> from a debugfs entry by using `anon_inode_getfd`.
|
This example gets an anonymous inode via <<ioctl>> from a debugfs entry by using `anon_inode_getfd`.
|
||||||
@@ -6517,8 +6528,8 @@ Outcome: the test passes:
|
|||||||
Sources:
|
Sources:
|
||||||
|
|
||||||
* link:kernel_modules/netlink.c[]
|
* link:kernel_modules/netlink.c[]
|
||||||
* link:kernel_modules/netlink.h[]
|
* link:include/netlink.h[]
|
||||||
* link:userland/netlink.c[]
|
* link:userland/kernel_modules/netlink.c[]
|
||||||
* link:rootfs_overlay/lkmc/netlink.sh[]
|
* link:rootfs_overlay/lkmc/netlink.sh[]
|
||||||
|
|
||||||
Launch multiple user requests in parallel to stress our socket:
|
Launch multiple user requests in parallel to stress our socket:
|
||||||
@@ -6993,10 +7004,10 @@ In this section we will play with them.
|
|||||||
First get a virtual address to play with:
|
First get a virtual address to play with:
|
||||||
|
|
||||||
....
|
....
|
||||||
./virt_to_phys_test.out &
|
./posix/virt_to_phys_test.out &
|
||||||
....
|
....
|
||||||
|
|
||||||
Source: link:userland/virt_to_phys_test.c[]
|
Source: link:userland/posix/virt_to_phys_test.c[]
|
||||||
|
|
||||||
Sample output:
|
Sample output:
|
||||||
|
|
||||||
@@ -7091,7 +7102,7 @@ After one second, we see on the screen:
|
|||||||
|
|
||||||
....
|
....
|
||||||
i 9abcdef0
|
i 9abcdef0
|
||||||
[1]+ Done ./virt_to_phys_test.out
|
[1]+ Done ./posix/virt_to_phys_test.out
|
||||||
....
|
....
|
||||||
|
|
||||||
so the value changed, and the `while` loop exited!
|
so the value changed, and the `while` loop exited!
|
||||||
@@ -7116,7 +7127,7 @@ Dump the physical address of all pages mapped to a given process using `/proc/<p
|
|||||||
First launch `linux/virt_to_phys_user.out` as described at <<userland-physical-address-experiments>>. Suppose that the output was:
|
First launch `linux/virt_to_phys_user.out` as described at <<userland-physical-address-experiments>>. Suppose that the output was:
|
||||||
|
|
||||||
....
|
....
|
||||||
# ./virt_to_phys_test.out &
|
# ./posix/virt_to_phys_test.out &
|
||||||
vaddr 0x601048
|
vaddr 0x601048
|
||||||
pid 63
|
pid 63
|
||||||
# ./linux/virt_to_phys_user.out 63 0x601048
|
# ./linux/virt_to_phys_user.out 63 0x601048
|
||||||
@@ -7133,9 +7144,9 @@ Sample output excerpt:
|
|||||||
|
|
||||||
....
|
....
|
||||||
vaddr pfn soft-dirty file/shared swapped present library
|
vaddr pfn soft-dirty file/shared swapped present library
|
||||||
400000 1ede 0 1 0 1 ./virt_to_phys_test.out
|
400000 1ede 0 1 0 1 ./posix/virt_to_phys_test.out
|
||||||
600000 1a6f 0 0 0 1 ./virt_to_phys_test.out
|
600000 1a6f 0 0 0 1 ./posix/virt_to_phys_test.out
|
||||||
601000 1a61 0 0 0 1 ./virt_to_phys_test.out
|
601000 1a61 0 0 0 1 ./posix/virt_to_phys_test.out
|
||||||
602000 2208 0 0 0 1 [heap]
|
602000 2208 0 0 0 1 [heap]
|
||||||
603000 220b 0 0 0 1 [heap]
|
603000 220b 0 0 0 1 [heap]
|
||||||
7ffff78ec000 1fd4 0 1 0 1 /lib/libuClibc-1.0.30.so
|
7ffff78ec000 1fd4 0 1 0 1 /lib/libuClibc-1.0.30.so
|
||||||
@@ -7150,7 +7161,7 @@ Meaning of the flags:
|
|||||||
* `vaddr`: first virtual address of a page the belongs to the process. Notably:
|
* `vaddr`: first virtual address of a page the belongs to the process. Notably:
|
||||||
+
|
+
|
||||||
....
|
....
|
||||||
./run-toolchain readelf -- -l "$(./getvar userland_build_dir)/virt_to_phys_test.out"
|
./run-toolchain readelf -- -l "$(./getvar userland_build_dir)/posix/virt_to_phys_test.out"
|
||||||
....
|
....
|
||||||
+
|
+
|
||||||
contains:
|
contains:
|
||||||
@@ -7222,7 +7233,7 @@ Logs proc events such as process creation to a link:kernel_modules/netlink.c[net
|
|||||||
We then have a userland program that listens to the events and prints them out:
|
We then have a userland program that listens to the events and prints them out:
|
||||||
|
|
||||||
....
|
....
|
||||||
# ./proc_events.out &
|
# ./linux/proc_events.out &
|
||||||
# set mcast listen ok
|
# set mcast listen ok
|
||||||
# sleep 2 & sleep 1
|
# sleep 2 & sleep 1
|
||||||
fork: parent tid=48 pid=48 -> child tid=79 pid=79
|
fork: parent tid=48 pid=48 -> child tid=79 pid=79
|
||||||
@@ -7236,7 +7247,7 @@ a
|
|||||||
#
|
#
|
||||||
....
|
....
|
||||||
|
|
||||||
Source: link:userland/proc_events.c[]
|
Source: link:userland/linux/proc_events.c[]
|
||||||
|
|
||||||
TODO: why `exit: tid=79` shows after `exit: tid=80`?
|
TODO: why `exit: tid=79` shows after `exit: tid=80`?
|
||||||
|
|
||||||
@@ -7245,7 +7256,7 @@ Note how `echo a` is a Bash built-in, and therefore does not spawn a new process
|
|||||||
TODO: why does this produce no output?
|
TODO: why does this produce no output?
|
||||||
|
|
||||||
....
|
....
|
||||||
./proc_events.out >f &
|
./linux/proc_events.out >f &
|
||||||
....
|
....
|
||||||
|
|
||||||
* https://stackoverflow.com/questions/6075013/detect-launching-of-programs-on-linux-platform/8255487#8255487
|
* https://stackoverflow.com/questions/6075013/detect-launching-of-programs-on-linux-platform/8255487#8255487
|
||||||
@@ -7725,7 +7736,7 @@ UIO interface in a nutshell:
|
|||||||
|
|
||||||
Sources:
|
Sources:
|
||||||
|
|
||||||
* link:userland/uio_read.c[]
|
* link:userland/kernel_modules/uio_read.c[]
|
||||||
* link:rootfs_overlay/lkmc/uio_read.sh[]
|
* link:rootfs_overlay/lkmc/uio_read.sh[]
|
||||||
|
|
||||||
Bibliography:
|
Bibliography:
|
||||||
@@ -8169,8 +8180,8 @@ DRM / DRI is the new interface that supersedes `fbdev`:
|
|||||||
|
|
||||||
....
|
....
|
||||||
./build-buildroot --config 'BR2_PACKAGE_LIBDRM=y'
|
./build-buildroot --config 'BR2_PACKAGE_LIBDRM=y'
|
||||||
./build-userland --has-package libdrm -- libs/libdrm_modeset
|
./build-userland --has-package libdrm -- libs/libdrm/modeset
|
||||||
./run --eval-after './libs/libdrm_modeset.out' --graphic
|
./run --eval-after './libs/libdrm/modeset.out' --graphic
|
||||||
....
|
....
|
||||||
|
|
||||||
Source: link:userland/libs/libdrm_modeset.c[]
|
Source: link:userland/libs/libdrm_modeset.c[]
|
||||||
@@ -8183,7 +8194,7 @@ TODO not working for `aarch64`, it takes over the screen for a few seconds and t
|
|||||||
./build-buildroot --config 'BR2_PACKAGE_LIBDRM=y'
|
./build-buildroot --config 'BR2_PACKAGE_LIBDRM=y'
|
||||||
./build-userland --has-package libdrm
|
./build-userland --has-package libdrm
|
||||||
./build-buildroot
|
./build-buildroot
|
||||||
./run --eval-after './libs/libdrm_modeset.out' --graphic
|
./run --eval-after './libs/libdrm/modeset.out' --graphic
|
||||||
....
|
....
|
||||||
|
|
||||||
<<kmscube>> however worked, which means that it must be a bug with this demo?
|
<<kmscube>> however worked, which means that it must be a bug with this demo?
|
||||||
@@ -8208,7 +8219,7 @@ Try creating new displays:
|
|||||||
to see multiple `/dev/dri/cardN`, and then use a different display with:
|
to see multiple `/dev/dri/cardN`, and then use a different display with:
|
||||||
|
|
||||||
....
|
....
|
||||||
./run --eval-after './libs/libdrm_modeset.out' --graphic
|
./run --eval-after './libs/libdrm/modeset.out' --graphic
|
||||||
....
|
....
|
||||||
|
|
||||||
Bibliography:
|
Bibliography:
|
||||||
@@ -9909,8 +9920,8 @@ Buildroot supports it, which makes everything just trivial:
|
|||||||
|
|
||||||
....
|
....
|
||||||
./build-buildroot --config 'BR2_PACKAGE_OPENBLAS=y'
|
./build-buildroot --config 'BR2_PACKAGE_OPENBLAS=y'
|
||||||
./build-userland --has-package openblas -- libs/openblas_hello
|
./build-userland --has-package openblas -- libs/openblas/hello
|
||||||
./run --eval-after './libs/openblas_hello.out; echo $?'
|
./run --eval-after './libs/openblas/hello.out; echo $?'
|
||||||
....
|
....
|
||||||
|
|
||||||
Outcome: the test passes:
|
Outcome: the test passes:
|
||||||
@@ -9919,7 +9930,7 @@ Outcome: the test passes:
|
|||||||
0
|
0
|
||||||
....
|
....
|
||||||
|
|
||||||
Source: link:userland/libs/openblas.c[]
|
Source: link:userland/libs/openblas/hello.c[]
|
||||||
|
|
||||||
The test performs a general matrix multiplication:
|
The test performs a general matrix multiplication:
|
||||||
|
|
||||||
@@ -9949,13 +9960,13 @@ Header only linear algebra library with a mainline Buildroot package:
|
|||||||
|
|
||||||
....
|
....
|
||||||
./build-buildroot --config 'BR2_PACKAGE_EIGEN=y'
|
./build-buildroot --config 'BR2_PACKAGE_EIGEN=y'
|
||||||
./build-userland --has-package eigen -- libs/eigen_hello
|
./build-userland --has-package eigen -- libs/eigen/hello
|
||||||
....
|
....
|
||||||
|
|
||||||
Just create an array and print it:
|
Just create an array and print it:
|
||||||
|
|
||||||
....
|
....
|
||||||
./run --eval-after './libs/eigen_hello.out'
|
./run --eval-after './libs/eigen/hello.out'
|
||||||
....
|
....
|
||||||
|
|
||||||
Output:
|
Output:
|
||||||
@@ -9965,7 +9976,7 @@ Output:
|
|||||||
2.5 1.5
|
2.5 1.5
|
||||||
....
|
....
|
||||||
|
|
||||||
Source: link:userland/libs/eigen_hello.cpp[]
|
Source: link:userland/libs/eigen/hello.cpp[]
|
||||||
|
|
||||||
This example just creates a matrix and prints it out.
|
This example just creates a matrix and prints it out.
|
||||||
|
|
||||||
@@ -10192,7 +10203,7 @@ The alternative is to do as in <<gdb-step-debug-userland-processes>>.
|
|||||||
|
|
||||||
Next, follow the exact same steps explained at <<gdb-step-debug-userland-non-init-without--d>>, but passing `-g` to every command as usual.
|
Next, follow the exact same steps explained at <<gdb-step-debug-userland-non-init-without--d>>, but passing `-g` to every command as usual.
|
||||||
|
|
||||||
But then TODO (I'll still go crazy one of those days): for `arm`, while debugging `./myinsmod.out hello.ko`, after then line:
|
But then TODO (I'll still go crazy one of those days): for `arm`, while debugging `./linux/myinsmod.out hello.ko`, after then line:
|
||||||
|
|
||||||
....
|
....
|
||||||
23 if (argc < 3) {
|
23 if (argc < 3) {
|
||||||
|
|||||||
8
build
8
build
@@ -339,6 +339,14 @@ so looping over all of them would waste time.
|
|||||||
self._build_file('build-userland'),
|
self._build_file('build-userland'),
|
||||||
dependencies=['buildroot'],
|
dependencies=['buildroot'],
|
||||||
),
|
),
|
||||||
|
'userland-host': _Component(
|
||||||
|
self._build_file('build-userland'),
|
||||||
|
apt_get_pkgs={
|
||||||
|
'libdrm-dev',
|
||||||
|
'libeigen3-dev',
|
||||||
|
'libopenblas-dev',
|
||||||
|
},
|
||||||
|
),
|
||||||
'userland-gem5': _Component(
|
'userland-gem5': _Component(
|
||||||
self._build_file('build-userland', static=True, userland_build_id='static'),
|
self._build_file('build-userland', static=True, userland_build_id='static'),
|
||||||
dependencies=['buildroot'],
|
dependencies=['buildroot'],
|
||||||
|
|||||||
185
build-userland
185
build-userland
@@ -25,6 +25,13 @@ Build our compiled userland examples.
|
|||||||
help='''\
|
help='''\
|
||||||
Indicate that a given package is present in the root filesystem, which
|
Indicate that a given package is present in the root filesystem, which
|
||||||
allows us to build examples that rely on it.
|
allows us to build examples that rely on it.
|
||||||
|
''',
|
||||||
|
)
|
||||||
|
self.add_argument(
|
||||||
|
'--has-all-packages',
|
||||||
|
action='store_true',
|
||||||
|
help='''\
|
||||||
|
Indicate that all packages from --has-package are available.
|
||||||
''',
|
''',
|
||||||
)
|
)
|
||||||
self.add_argument(
|
self.add_argument(
|
||||||
@@ -138,6 +145,7 @@ Default: build all examples that have their package dependencies met, e.g.:
|
|||||||
def build(self):
|
def build(self):
|
||||||
build_dir = self.get_build_dir()
|
build_dir = self.get_build_dir()
|
||||||
has_packages = set(self.env['has_package'])
|
has_packages = set(self.env['has_package'])
|
||||||
|
has_all_packages = self.env['has_all_packages']
|
||||||
ccflags = [
|
ccflags = [
|
||||||
'-I', self.env['root_dir'], LF,
|
'-I', self.env['root_dir'], LF,
|
||||||
'-O0', LF,
|
'-O0', LF,
|
||||||
@@ -179,6 +187,10 @@ Default: build all examples that have their package dependencies met, e.g.:
|
|||||||
extra_deps=[self.env['common_h']],
|
extra_deps=[self.env['common_h']],
|
||||||
link=False,
|
link=False,
|
||||||
)
|
)
|
||||||
|
if self.env['gcc_which'] == 'host':
|
||||||
|
eigen_root = '/'
|
||||||
|
else:
|
||||||
|
eigen_root = self.env['buildroot_staging_dir']
|
||||||
pkgs = {
|
pkgs = {
|
||||||
'eigen': {
|
'eigen': {
|
||||||
# TODO: was failing with:
|
# TODO: was failing with:
|
||||||
@@ -188,7 +200,7 @@ Default: build all examples that have their package dependencies met, e.g.:
|
|||||||
'ccflags': [
|
'ccflags': [
|
||||||
'-I',
|
'-I',
|
||||||
os.path.join(
|
os.path.join(
|
||||||
self.env['buildroot_staging_dir'],
|
eigen_root,
|
||||||
'usr',
|
'usr',
|
||||||
'include',
|
'include',
|
||||||
'eigen3'
|
'eigen3'
|
||||||
@@ -217,26 +229,19 @@ Default: build all examples that have their package dependencies met, e.g.:
|
|||||||
dirpath_relative_root = path_abs[rootdir_abs_len + 1:]
|
dirpath_relative_root = path_abs[rootdir_abs_len + 1:]
|
||||||
dirpath_relative_root_components = dirpath_relative_root.split(os.sep)
|
dirpath_relative_root_components = dirpath_relative_root.split(os.sep)
|
||||||
dirpath_relative_root_components_len = len(dirpath_relative_root_components)
|
dirpath_relative_root_components_len = len(dirpath_relative_root_components)
|
||||||
do_build_dir = True
|
out_dir = os.path.join(
|
||||||
in_arch = False
|
build_dir,
|
||||||
|
dirpath_relative_root
|
||||||
|
)
|
||||||
|
common_objs_dir = [common_obj]
|
||||||
|
ccflags_after = []
|
||||||
|
ccflags_dir = ccflags.copy()
|
||||||
if dirpath_relative_root_components_len > 0:
|
if dirpath_relative_root_components_len > 0:
|
||||||
if dirpath_relative_root_components[0] == 'arch':
|
if dirpath_relative_root_components[0] in (
|
||||||
if dirpath_relative_root_components_len > 1:
|
'gcc',
|
||||||
if dirpath_relative_root_components[1] == self.env['arch']:
|
'kernel_modules',
|
||||||
in_arch = True
|
'linux',
|
||||||
else:
|
):
|
||||||
do_build_dir = False
|
|
||||||
else:
|
|
||||||
do_build_dir = False
|
|
||||||
in_libs = dirpath_relative_root_components[0] == 'libs'
|
|
||||||
if do_build_dir:
|
|
||||||
out_dir = os.path.join(
|
|
||||||
build_dir,
|
|
||||||
dirpath_relative_root
|
|
||||||
)
|
|
||||||
common_objs_dir = [common_obj]
|
|
||||||
ccflags_dir = ccflags.copy()
|
|
||||||
if dirpath_relative_root_components in ('gcc', 'kernel_modules', 'linux'):
|
|
||||||
cstd = 'gnu11'
|
cstd = 'gnu11'
|
||||||
cxxstd = 'gnu++17'
|
cxxstd = 'gnu++17'
|
||||||
else:
|
else:
|
||||||
@@ -244,90 +249,94 @@ Default: build all examples that have their package dependencies met, e.g.:
|
|||||||
cxxstd = self.default_cxxstd
|
cxxstd = self.default_cxxstd
|
||||||
# -pedantic complains even if we use -std=gnu11.
|
# -pedantic complains even if we use -std=gnu11.
|
||||||
ccflags_dir.extend(['-pedantic', LF])
|
ccflags_dir.extend(['-pedantic', LF])
|
||||||
if in_arch:
|
if dirpath_relative_root_components[0] == 'arch':
|
||||||
ccflags_dir.extend([
|
if dirpath_relative_root_components_len > 1:
|
||||||
'-I', os.path.join(self.env['userland_source_arch_arch_dir']), LF,
|
if dirpath_relative_root_components[1] == self.env['arch']:
|
||||||
'-I', os.path.join(self.env['userland_source_arch_dir']), LF,
|
ccflags_dir.extend([
|
||||||
'-fno-pie', LF,
|
'-I', os.path.join(self.env['userland_source_arch_arch_dir']), LF,
|
||||||
'-no-pie', LF,
|
'-I', os.path.join(self.env['userland_source_arch_dir']), LF,
|
||||||
])
|
'-fno-pie', LF,
|
||||||
if 'freestanding' in dirpath_relative_root_components:
|
'-no-pie', LF,
|
||||||
common_objs_dir = []
|
])
|
||||||
ccflags_dir.extend([
|
if 'freestanding' in dirpath_relative_root_components:
|
||||||
'-ffreestanding', LF,
|
common_objs_dir = []
|
||||||
'-nostdlib', LF,
|
ccflags_dir.extend([
|
||||||
'-static', LF,
|
'-ffreestanding', LF,
|
||||||
])
|
'-nostdlib', LF,
|
||||||
else:
|
'-static', LF,
|
||||||
if 'c' in dirpath_relative_root_components:
|
])
|
||||||
common_objs_dir = []
|
else:
|
||||||
|
if 'c' in dirpath_relative_root_components:
|
||||||
|
common_objs_dir = []
|
||||||
|
else:
|
||||||
|
common_objs_dir = [common_obj_asm]
|
||||||
|
if self.env['arch'] == 'arm':
|
||||||
|
ccflags_dir.extend([
|
||||||
|
'-Xassembler', '-mcpu=cortex-a72', LF,
|
||||||
|
# To prevent:
|
||||||
|
# > vfp.S: Error: selected processor does not support <FPU instruction> in ARM mode
|
||||||
|
# https://stackoverflow.com/questions/41131432/cross-compiling-error-selected-processor-does-not-support-fmrx-r3-fpexc-in/52875732#52875732
|
||||||
|
# We aim to take the most extended mode currently available that works on QEMU.
|
||||||
|
'-Xassembler', '-mfpu=crypto-neon-fp-armv8.1', LF,
|
||||||
|
'-Xassembler', '-meabi=5', LF,
|
||||||
|
# Treat inline assembly as arm instead of thumb
|
||||||
|
# The opposite of -mthumb.
|
||||||
|
'-marm', LF,
|
||||||
|
# Make gcc generate .syntax unified for inline assembly.
|
||||||
|
# However, it gets ignored if -marm is given, which a GCC bug that was recently fixed:
|
||||||
|
# https://stackoverflow.com/questions/54078112/how-to-write-syntax-unified-ual-armv7-inline-assembly-in-gcc/54132097#54132097
|
||||||
|
# So we just write divided inline assembly for now.
|
||||||
|
'-masm-syntax-unified', LF,
|
||||||
|
])
|
||||||
else:
|
else:
|
||||||
common_objs_dir = [common_obj_asm]
|
continue
|
||||||
if self.env['arch'] == 'arm':
|
else:
|
||||||
ccflags_dir.extend([
|
continue
|
||||||
'-Xassembler', '-mcpu=cortex-a72', LF,
|
elif dirpath_relative_root_components[0] == 'libs':
|
||||||
# To prevent:
|
if dirpath_relative_root_components_len > 1:
|
||||||
# > vfp.S: Error: selected processor does not support <FPU instruction> in ARM mode
|
pkg_key = dirpath_relative_root_components[1]
|
||||||
# https://stackoverflow.com/questions/41131432/cross-compiling-error-selected-processor-does-not-support-fmrx-r3-fpexc-in/52875732#52875732
|
if not (has_all_packages or pkg_key in has_packages):
|
||||||
# We aim to take the most extended mode currently available that works on QEMU.
|
|
||||||
'-Xassembler', '-mfpu=crypto-neon-fp-armv8.1', LF,
|
|
||||||
'-Xassembler', '-meabi=5', LF,
|
|
||||||
# Treat inline assembly as arm instead of thumb
|
|
||||||
# The opposite of -mthumb.
|
|
||||||
'-marm', LF,
|
|
||||||
# Make gcc generate .syntax unified for inline assembly.
|
|
||||||
# However, it gets ignored if -marm is given, which a GCC bug that was recently fixed:
|
|
||||||
# https://stackoverflow.com/questions/54078112/how-to-write-syntax-unified-ual-armv7-inline-assembly-in-gcc/54132097#54132097
|
|
||||||
# So we just write divided inline assembly for now.
|
|
||||||
'-masm-syntax-unified', LF,
|
|
||||||
])
|
|
||||||
for in_filename in in_filenames:
|
|
||||||
path_relative_root = os.path.join(dirpath_relative_root, in_filename)
|
|
||||||
if path_relative_root == common_obj_asm_relpath:
|
|
||||||
continue
|
|
||||||
in_path = os.path.join(path, in_filename)
|
|
||||||
in_name, in_ext = os.path.splitext(in_filename)
|
|
||||||
out_path = os.path.join(
|
|
||||||
out_dir,
|
|
||||||
in_name + self.env['userland_build_ext']
|
|
||||||
)
|
|
||||||
ccflags_file = ccflags_dir.copy()
|
|
||||||
ccflags_after = []
|
|
||||||
if in_libs:
|
|
||||||
pkg_key = in_name.split('_')[0]
|
|
||||||
if pkg_key in pkgs:
|
|
||||||
if pkg_key not in has_packages:
|
|
||||||
continue
|
continue
|
||||||
pkg = pkgs[pkg_key]
|
pkg = pkgs[pkg_key]
|
||||||
if 'ccflags' in pkg:
|
if 'ccflags' in pkg:
|
||||||
ccflags_file.extend(pkg['ccflags'])
|
ccflags_dir.extend(pkg['ccflags'])
|
||||||
else:
|
else:
|
||||||
pkg_config_output = subprocess.check_output([
|
pkg_config_output = subprocess.check_output([
|
||||||
self.env['buildroot_pkg_config'],
|
self.env['pkg_config'],
|
||||||
'--cflags',
|
'--cflags',
|
||||||
pkg_key
|
pkg_key
|
||||||
]).decode()
|
]).decode()
|
||||||
ccflags_file.extend(self.sh.shlex_split(pkg_config_output))
|
ccflags_dir.extend(self.sh.shlex_split(pkg_config_output))
|
||||||
if 'ccflags_after' in pkg:
|
if 'ccflags_after' in pkg:
|
||||||
ccflags_file.extend(pkg['ccflags_after'])
|
ccflags_dir.extend(pkg['ccflags_after'])
|
||||||
else:
|
else:
|
||||||
pkg_config_output = subprocess.check_output([
|
pkg_config_output = subprocess.check_output([
|
||||||
self.env['buildroot_pkg_config'],
|
self.env['pkg_config'],
|
||||||
'--libs',
|
'--libs',
|
||||||
pkg_key
|
pkg_key
|
||||||
]).decode()
|
]).decode()
|
||||||
ccflags_after.extend(self.sh.shlex_split(pkg_config_output))
|
ccflags_after.extend(self.sh.shlex_split(pkg_config_output))
|
||||||
error = thread_pool.submit({
|
for in_filename in in_filenames:
|
||||||
'in_path': in_path,
|
path_relative_root = os.path.join(dirpath_relative_root, in_filename)
|
||||||
'out_path': out_path,
|
if path_relative_root == common_obj_asm_relpath:
|
||||||
'ccflags': ccflags_file,
|
continue
|
||||||
'cstd': cstd,
|
in_path = os.path.join(path, in_filename)
|
||||||
'cxxstd': cxxstd,
|
in_name, in_ext = os.path.splitext(in_filename)
|
||||||
'extra_objs': common_objs_dir,
|
out_path = os.path.join(
|
||||||
'ccflags_after': ccflags_after,
|
out_dir,
|
||||||
})
|
in_name + self.env['userland_build_ext']
|
||||||
if error is not None:
|
)
|
||||||
raise ExitLoop()
|
error = thread_pool.submit({
|
||||||
|
'in_path': in_path,
|
||||||
|
'out_path': out_path,
|
||||||
|
'ccflags': ccflags_dir,
|
||||||
|
'cstd': cstd,
|
||||||
|
'cxxstd': cxxstd,
|
||||||
|
'extra_objs': common_objs_dir,
|
||||||
|
'ccflags_after': ccflags_after,
|
||||||
|
})
|
||||||
|
if error is not None:
|
||||||
|
raise ExitLoop()
|
||||||
except ExitLoop:
|
except ExitLoop:
|
||||||
pass
|
pass
|
||||||
error = thread_pool.join()
|
error = thread_pool.join()
|
||||||
|
|||||||
@@ -1,6 +1,7 @@
|
|||||||
#!/usr/bin/env bash
|
#!/usr/bin/env bash
|
||||||
"$(git rev-parse --show-toplevel)/build-userland" \
|
"$(git rev-parse --show-toplevel)/build-userland" \
|
||||||
--gcc-which host \
|
--gcc-which host \
|
||||||
|
--has-all-packages \
|
||||||
--in-tree \
|
--in-tree \
|
||||||
--target-cwd \
|
--target-cwd \
|
||||||
"$@" \
|
"$@" \
|
||||||
|
|||||||
@@ -10,7 +10,6 @@ import imp
|
|||||||
import inspect
|
import inspect
|
||||||
import json
|
import json
|
||||||
import math
|
import math
|
||||||
import multiprocessing
|
|
||||||
import os
|
import os
|
||||||
import platform
|
import platform
|
||||||
import re
|
import re
|
||||||
@@ -824,6 +823,7 @@ lunch aosp_{}-eng
|
|||||||
env['buildroot_toolchain_prefix']
|
env['buildroot_toolchain_prefix']
|
||||||
)
|
)
|
||||||
env['userland_library_dir'] = env['buildroot_target_dir']
|
env['userland_library_dir'] = env['buildroot_target_dir']
|
||||||
|
env['pkg_config'] = env['buildroot_pkg_config']
|
||||||
elif env['gcc_which'] == 'crosstool-ng':
|
elif env['gcc_which'] == 'crosstool-ng':
|
||||||
env['toolchain_prefix'] = os.path.join(
|
env['toolchain_prefix'] = os.path.join(
|
||||||
env['crosstool_ng_bin_dir'],
|
env['crosstool_ng_bin_dir'],
|
||||||
@@ -837,6 +837,7 @@ lunch aosp_{}-eng
|
|||||||
env['userland_library_dir'] = '/usr/arm-linux-gnueabihf'
|
env['userland_library_dir'] = '/usr/arm-linux-gnueabihf'
|
||||||
elif env['arch'] == 'aarch64':
|
elif env['arch'] == 'aarch64':
|
||||||
env['userland_library_dir'] = '/usr/aarch64-linux-gnu/'
|
env['userland_library_dir'] = '/usr/aarch64-linux-gnu/'
|
||||||
|
env['pkg_config'] = 'pkg-config'
|
||||||
elif env['gcc_which'] == 'host-baremetal':
|
elif env['gcc_which'] == 'host-baremetal':
|
||||||
if env['arch'] == 'arm':
|
if env['arch'] == 'arm':
|
||||||
env['toolchain_prefix'] = 'arm-none-eabi'
|
env['toolchain_prefix'] = 'arm-none-eabi'
|
||||||
@@ -1249,7 +1250,7 @@ TODO: not yet implemented on all scripts.
|
|||||||
self.add_argument(
|
self.add_argument(
|
||||||
'-j',
|
'-j',
|
||||||
'--nproc',
|
'--nproc',
|
||||||
default=multiprocessing.cpu_count(),
|
default=len(os.sched_getaffinity(0)),
|
||||||
type=int,
|
type=int,
|
||||||
help='Number of processors to use for the build.',
|
help='Number of processors to use for the build.',
|
||||||
)
|
)
|
||||||
|
|||||||
@@ -1,5 +1,6 @@
|
|||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
|
# https://github.com/cirosantilli/linux-kernel-module-cheat#anonymous-inode
|
||||||
set -e
|
set -e
|
||||||
insmod anonymous_inode.ko
|
insmod anonymous_inode.ko
|
||||||
[ "$(/anonymous_inode.out /sys/kernel/debug/lkmc_anonymous_inode 3)" = "$(printf '1\n10\n100')" ]
|
[ "$(./kernel_modules/anonymous_inode.out /sys/kernel/debug/lkmc_anonymous_inode 3)" = "$(printf '1\n10\n100')" ]
|
||||||
rmmod anonymous_inode
|
rmmod anonymous_inode
|
||||||
|
|||||||
@@ -1,7 +1,8 @@
|
|||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
|
# https://github.com/cirosantilli/linux-kernel-module-cheat#ioctl
|
||||||
set -e
|
set -e
|
||||||
f=/sys/kernel/debug/lkmc_ioctl
|
f=/sys/kernel/debug/lkmc_ioctl
|
||||||
insmod ioctl.ko
|
insmod ioctl.ko
|
||||||
[ "$(/ioctl.out "$f" 0 1)" = 2 ]
|
[ "$(./kernel_modules/ioctl.out "$f" 0 1)" = 2 ]
|
||||||
[ "$(/ioctl.out "$f" 1 1 1)" = '2 0' ]
|
[ "$(./kernel_modules/ioctl.out "$f" 1 1 1)" = '2 0' ]
|
||||||
rmmod ioctl
|
rmmod ioctl
|
||||||
|
|||||||
@@ -1,7 +1,8 @@
|
|||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
|
# https://github.com/cirosantilli/linux-kernel-module-cheat#netlink-sockets
|
||||||
set -e
|
set -e
|
||||||
insmod netlink.ko
|
insmod netlink.ko
|
||||||
[ "$(/netlink.out)" = 0 ]
|
[ "$(./linux/netlink.out)" = 0 ]
|
||||||
[ "$(/netlink.out)" = 1 ]
|
[ "$(./linux/netlink.out)" = 1 ]
|
||||||
[ "$(/netlink.out)" = 2 ]
|
[ "$(./linux/netlink.out)" = 2 ]
|
||||||
rmmod netlink
|
rmmod netlink
|
||||||
|
|||||||
@@ -1,5 +1,6 @@
|
|||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
|
# https://github.com/cirosantilli/linux-kernel-module-cheat#poll
|
||||||
set -e
|
set -e
|
||||||
insmod poll.ko
|
insmod poll.ko
|
||||||
./poll.out /sys/kernel/debug/lkmc_poll
|
./kernel_modules/poll.out /sys/kernel/debug/lkmc_poll
|
||||||
#rmmod poll
|
#rmmod poll
|
||||||
|
|||||||
@@ -4,7 +4,7 @@ set -e
|
|||||||
modprobe uio_pci_generic
|
modprobe uio_pci_generic
|
||||||
# pci_min device
|
# pci_min device
|
||||||
echo '1234 11e9' > /sys/bus/pci/drivers/uio_pci_generic/new_id
|
echo '1234 11e9' > /sys/bus/pci/drivers/uio_pci_generic/new_id
|
||||||
./uio_read.out &
|
./kernel_modules/uio_read.out &
|
||||||
# Helper to observe interrupts.
|
# Helper to observe interrupts.
|
||||||
insmod irq.ko
|
insmod irq.ko
|
||||||
base="$(setpci -d 1234:11e9 BASE_ADDRESS_0)"
|
base="$(setpci -d 1234:11e9 BASE_ADDRESS_0)"
|
||||||
|
|||||||
@@ -1,7 +1,6 @@
|
|||||||
#!/usr/bin/env python3
|
#!/usr/bin/env python3
|
||||||
|
|
||||||
from typing import Any, Callable, Dict, Iterable, Union
|
from typing import Any, Callable, Dict, Iterable, Union
|
||||||
import multiprocessing
|
|
||||||
import queue
|
import queue
|
||||||
import sys
|
import sys
|
||||||
import threading
|
import threading
|
||||||
@@ -66,7 +65,7 @@ class ThreadPool:
|
|||||||
handle_output = lambda input, output, exception: exception
|
handle_output = lambda input, output, exception: exception
|
||||||
self.handle_output = handle_output
|
self.handle_output = handle_output
|
||||||
if nthreads is None:
|
if nthreads is None:
|
||||||
nthreads = multiprocessing.cpu_count()
|
nthreads = len(os.sched_getaffinity(0))
|
||||||
self.nthreads = nthreads
|
self.nthreads = nthreads
|
||||||
self.error_output = None
|
self.error_output = None
|
||||||
self.error_output_lock = threading.Lock()
|
self.error_output_lock = threading.Lock()
|
||||||
|
|||||||
@@ -1,46 +0,0 @@
|
|||||||
/* https://github.com/cirosantilli/linux-kernel-module-cheat#anonymous-inode */
|
|
||||||
|
|
||||||
#define _GNU_SOURCE
|
|
||||||
#include <errno.h>
|
|
||||||
#include <fcntl.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <sys/ioctl.h>
|
|
||||||
#include <sys/stat.h>
|
|
||||||
#include <sys/types.h>
|
|
||||||
#include <unistd.h> /* sleep */
|
|
||||||
|
|
||||||
#include "../include/anonymous_inode.h"
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
char buf[1024];
|
|
||||||
int fd_ioctl, fd_ioctl_anon, ret;
|
|
||||||
size_t i, nreads;
|
|
||||||
|
|
||||||
if (argc < 2) {
|
|
||||||
puts("Usage: ./prog <ioctl-file> [<nreads>]");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
} else if (argc > 2) {
|
|
||||||
nreads = strtol(argv[2], NULL, 10);
|
|
||||||
} else {
|
|
||||||
nreads = 3;
|
|
||||||
}
|
|
||||||
fd_ioctl = open(argv[1], O_RDONLY);
|
|
||||||
if (fd_ioctl == -1) {
|
|
||||||
perror("open");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
ret = ioctl(fd_ioctl, LKMC_ANONYMOUS_INODE_GET_FD, &fd_ioctl_anon);
|
|
||||||
if (ret == -1) {
|
|
||||||
perror("ioctl");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
for (i = 0; i < nreads; ++i) {
|
|
||||||
ret = read(fd_ioctl_anon, buf, sizeof(buf));
|
|
||||||
printf("%.*s\n", ret, buf);
|
|
||||||
}
|
|
||||||
close(fd_ioctl_anon);
|
|
||||||
close(fd_ioctl);
|
|
||||||
return EXIT_SUCCESS;
|
|
||||||
}
|
|
||||||
@@ -5,13 +5,13 @@
|
|||||||
|
|
||||||
#define ASSERT_EQ(reg, const) \
|
#define ASSERT_EQ(reg, const) \
|
||||||
ldr x11, =const; \
|
ldr x11, =const; \
|
||||||
cmp reg, x11; \
|
cmp reg, x11; \
|
||||||
ASSERT(beq); \
|
ASSERT(beq); \
|
||||||
;
|
;
|
||||||
|
|
||||||
#define ASSERT_MEMCMP(s1, s2, n) \
|
#define ASSERT_MEMCMP(s1, s2, n) \
|
||||||
MEMCMP(s1, s2, n); \
|
MEMCMP(s1, s2, n); \
|
||||||
ASSERT_EQ(x0, 0); \
|
ASSERT_EQ(x0, 0); \
|
||||||
;
|
;
|
||||||
|
|
||||||
#define ENTRY \
|
#define ENTRY \
|
||||||
|
|||||||
@@ -12,14 +12,14 @@
|
|||||||
*/
|
*/
|
||||||
#define ASSERT_EQ(reg, const) \
|
#define ASSERT_EQ(reg, const) \
|
||||||
ldr r11, =const; \
|
ldr r11, =const; \
|
||||||
cmp reg, r11; \
|
cmp reg, r11; \
|
||||||
ASSERT(beq); \
|
ASSERT(beq); \
|
||||||
;
|
;
|
||||||
|
|
||||||
/* Assert that two arrays are the same. */
|
/* Assert that two arrays are the same. */
|
||||||
#define ASSERT_MEMCMP(s1, s2, n) \
|
#define ASSERT_MEMCMP(s1, s2, n) \
|
||||||
MEMCMP(s1, s2, n); \
|
MEMCMP(s1, s2, n); \
|
||||||
ASSERT_EQ(r0, 0); \
|
ASSERT_EQ(r0, 0); \
|
||||||
;
|
;
|
||||||
|
|
||||||
/* Store all callee saved registers, and LR in case we make further BL calls.
|
/* Store all callee saved registers, and LR in case we make further BL calls.
|
||||||
|
|||||||
@@ -23,8 +23,8 @@
|
|||||||
|
|
||||||
/* Assert that a register equals another register. */
|
/* Assert that a register equals another register. */
|
||||||
#define ASSERT_EQ_REG(reg1, reg2) \
|
#define ASSERT_EQ_REG(reg1, reg2) \
|
||||||
cmp reg1, reg2; \
|
cmp reg1, reg2; \
|
||||||
ASSERT(beq); \
|
ASSERT(beq); \
|
||||||
;
|
;
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
@@ -5,16 +5,16 @@
|
|||||||
|
|
||||||
int main(void) {
|
int main(void) {
|
||||||
#if 0
|
#if 0
|
||||||
uint64_t in = 0xFFFFFFFF;
|
uint64_t in = 0xFFFFFFFF;
|
||||||
uint64_t out = 0;
|
uint64_t out = 0;
|
||||||
__asm__ (
|
__asm__ (
|
||||||
"mov %[in], %%rax;"
|
"mov %[in], %%rax;"
|
||||||
"myinc %%rax;"
|
"myinc %%rax;"
|
||||||
"movq %%rax, %[out]"
|
"movq %%rax, %[out]"
|
||||||
: [out] "=g" (out)
|
: [out] "=g" (out)
|
||||||
: [in] "g" (in)
|
: [in] "g" (in)
|
||||||
: "rax"
|
: "rax"
|
||||||
);
|
);
|
||||||
assert(out == in + 1);
|
assert(out == in + 1);
|
||||||
#endif
|
#endif
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -4,15 +4,15 @@
|
|||||||
#include <inttypes.h>
|
#include <inttypes.h>
|
||||||
|
|
||||||
int main(void) {
|
int main(void) {
|
||||||
uint64_t in = 0xFFFFFFFF;
|
uint64_t in = 0xFFFFFFFF;
|
||||||
uint64_t out = 0;
|
uint64_t out = 0;
|
||||||
__asm__ (
|
__asm__ (
|
||||||
"mov %[in], %%rax;"
|
"mov %[in], %%rax;"
|
||||||
"inc %%rax;"
|
"inc %%rax;"
|
||||||
"movq %%rax, %[out]"
|
"movq %%rax, %[out]"
|
||||||
: [out] "=g" (out)
|
: [out] "=g" (out)
|
||||||
: [in] "g" (in)
|
: [in] "g" (in)
|
||||||
: "rax"
|
: "rax"
|
||||||
);
|
);
|
||||||
assert(out == in + 1);
|
assert(out == in + 1);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -29,16 +29,16 @@ int main(int argc, char **argv) {
|
|||||||
}
|
}
|
||||||
std::shuffle(randoms.begin(), randoms.end(), std::mt19937(seed));
|
std::shuffle(randoms.begin(), randoms.end(), std::mt19937(seed));
|
||||||
for (i = 0; i < n; ++i) {
|
for (i = 0; i < n; ++i) {
|
||||||
auto random = randoms[i];
|
auto random = randoms[i];
|
||||||
|
|
||||||
// Heap.
|
// Heap.
|
||||||
m5_resetstats();
|
m5_resetstats();
|
||||||
heap.emplace(random);
|
heap.emplace(random);
|
||||||
m5_dumpstats();
|
m5_dumpstats();
|
||||||
|
|
||||||
// BST.
|
// BST.
|
||||||
m5_resetstats();
|
m5_resetstats();
|
||||||
bst.insert(random);
|
bst.insert(random);
|
||||||
m5_dumpstats();
|
m5_dumpstats();
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -13,5 +13,5 @@ int main(int argc, char **argv) {
|
|||||||
} else {
|
} else {
|
||||||
ret = strtoull(argv[1], NULL, 0);
|
ret = strtoull(argv[1], NULL, 0);
|
||||||
}
|
}
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -4,6 +4,6 @@
|
|||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
|
|
||||||
int main(void) {
|
int main(void) {
|
||||||
puts("hello");
|
puts("hello");
|
||||||
return EXIT_SUCCESS;
|
return EXIT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|||||||
14
userland/c/print_argv.c
Normal file
14
userland/c/print_argv.c
Normal file
@@ -0,0 +1,14 @@
|
|||||||
|
/* Print each command line argument received, one per line.
|
||||||
|
*
|
||||||
|
* Good sanity check for user mode:
|
||||||
|
* https://github.com/cirosantilli/linux-kernel-module-cheat#qemu-user-mode-getting-started
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
size_t i;
|
||||||
|
for (i = 0; i < (size_t)argc; ++i)
|
||||||
|
printf("%s\n", argv[i]);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
@@ -26,8 +26,7 @@ typedef struct {
|
|||||||
* @param[in] vaddr virtual address to get entry for
|
* @param[in] vaddr virtual address to get entry for
|
||||||
* @return 0 for success, 1 for failure
|
* @return 0 for success, 1 for failure
|
||||||
*/
|
*/
|
||||||
int pagemap_get_entry(PagemapEntry *entry, int pagemap_fd, uintptr_t vaddr)
|
int pagemap_get_entry(PagemapEntry *entry, int pagemap_fd, uintptr_t vaddr) {
|
||||||
{
|
|
||||||
size_t nread;
|
size_t nread;
|
||||||
ssize_t ret;
|
ssize_t ret;
|
||||||
uint64_t data;
|
uint64_t data;
|
||||||
@@ -62,8 +61,7 @@ int pagemap_get_entry(PagemapEntry *entry, int pagemap_fd, uintptr_t vaddr)
|
|||||||
* @param[in] vaddr virtual address to get entry for
|
* @param[in] vaddr virtual address to get entry for
|
||||||
* @return 0 for success, 1 for failure
|
* @return 0 for success, 1 for failure
|
||||||
*/
|
*/
|
||||||
int virt_to_phys_user(uintptr_t *paddr, pid_t pid, uintptr_t vaddr)
|
int virt_to_phys_user(uintptr_t *paddr, pid_t pid, uintptr_t vaddr) {
|
||||||
{
|
|
||||||
char pagemap_file[BUFSIZ];
|
char pagemap_file[BUFSIZ];
|
||||||
int pagemap_fd;
|
int pagemap_fd;
|
||||||
|
|
||||||
|
|||||||
@@ -1,26 +0,0 @@
|
|||||||
#define _XOPEN_SOURCE 700
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <sys/reboot.h>
|
|
||||||
#include <unistd.h>
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
int i;
|
|
||||||
|
|
||||||
puts("args:");
|
|
||||||
for (i = 0; i < argc; ++i)
|
|
||||||
puts(argv[i]);
|
|
||||||
puts("");
|
|
||||||
|
|
||||||
puts("env:");
|
|
||||||
extern char **environ;
|
|
||||||
char **env = environ;
|
|
||||||
while (*env) {
|
|
||||||
printf("%s\n", *env);
|
|
||||||
env++;
|
|
||||||
}
|
|
||||||
puts("");
|
|
||||||
|
|
||||||
/* Poweroff. */
|
|
||||||
reboot(RB_POWER_OFF);
|
|
||||||
}
|
|
||||||
@@ -1,67 +0,0 @@
|
|||||||
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ioctl */
|
|
||||||
|
|
||||||
#define _GNU_SOURCE
|
|
||||||
#include <errno.h>
|
|
||||||
#include <fcntl.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <sys/ioctl.h>
|
|
||||||
#include <sys/stat.h>
|
|
||||||
#include <sys/types.h>
|
|
||||||
#include <unistd.h>
|
|
||||||
|
|
||||||
#include "../include/ioctl.h"
|
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
|
||||||
{
|
|
||||||
char *ioctl_path;
|
|
||||||
int fd, request, arg0, arg1, arg_int, ret;
|
|
||||||
lkmc_ioctl_struct arg_struct;
|
|
||||||
|
|
||||||
if (argc < 2) {
|
|
||||||
puts("Usage: ./prog <ioctl-file> <request> [<arg>...]");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
ioctl_path = argv[1];
|
|
||||||
request = strtol(argv[2], NULL, 10);
|
|
||||||
if (argc > 3) {
|
|
||||||
arg0 = strtol(argv[3], NULL, 10);
|
|
||||||
}
|
|
||||||
if (argc > 4) {
|
|
||||||
arg1 = strtol(argv[4], NULL, 10);
|
|
||||||
}
|
|
||||||
|
|
||||||
fd = open(ioctl_path, O_RDONLY);
|
|
||||||
if (fd == -1) {
|
|
||||||
perror("open");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
switch (request)
|
|
||||||
{
|
|
||||||
case 0:
|
|
||||||
arg_int = arg0;
|
|
||||||
ret = ioctl(fd, LKMC_IOCTL_INC, &arg_int);
|
|
||||||
if (ret != -1) {
|
|
||||||
printf("%d\n", arg_int);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case 1:
|
|
||||||
arg_struct.i = arg0;
|
|
||||||
arg_struct.j = arg1;
|
|
||||||
ret = ioctl(fd, LKMC_IOCTL_INC_DEC, &arg_struct);
|
|
||||||
if (ret != -1) {
|
|
||||||
printf("%d %d\n", arg_struct.i, arg_struct.j);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
puts("error: unknown request");
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
if (ret == -1) {
|
|
||||||
perror("ioctl");
|
|
||||||
printf("errno = %d\n", errno);
|
|
||||||
return EXIT_FAILURE;
|
|
||||||
}
|
|
||||||
close(fd);
|
|
||||||
return EXIT_SUCCESS;
|
|
||||||
}
|
|
||||||
45
userland/kernel_modules/anonymous_inode.c
Normal file
45
userland/kernel_modules/anonymous_inode.c
Normal file
@@ -0,0 +1,45 @@
|
|||||||
|
/* https://github.com/cirosantilli/linux-kernel-module-cheat#anonymous-inode */
|
||||||
|
|
||||||
|
#define _GNU_SOURCE
|
||||||
|
#include <errno.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <unistd.h> /* sleep */
|
||||||
|
|
||||||
|
#include <include/anonymous_inode.h>
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
char buf[1024];
|
||||||
|
int fd_ioctl, fd_ioctl_anon, ret;
|
||||||
|
size_t i, nreads;
|
||||||
|
|
||||||
|
if (argc < 2) {
|
||||||
|
puts("Usage: ./prog <ioctl-file> [<nreads>]");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
} else if (argc > 2) {
|
||||||
|
nreads = strtol(argv[2], NULL, 10);
|
||||||
|
} else {
|
||||||
|
nreads = 3;
|
||||||
|
}
|
||||||
|
fd_ioctl = open(argv[1], O_RDONLY);
|
||||||
|
if (fd_ioctl == -1) {
|
||||||
|
perror("open");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
ret = ioctl(fd_ioctl, LKMC_ANONYMOUS_INODE_GET_FD, &fd_ioctl_anon);
|
||||||
|
if (ret == -1) {
|
||||||
|
perror("ioctl");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
for (i = 0; i < nreads; ++i) {
|
||||||
|
ret = read(fd_ioctl_anon, buf, sizeof(buf));
|
||||||
|
printf("%.*s\n", ret, buf);
|
||||||
|
}
|
||||||
|
close(fd_ioctl_anon);
|
||||||
|
close(fd_ioctl);
|
||||||
|
return EXIT_SUCCESS;
|
||||||
|
}
|
||||||
66
userland/kernel_modules/ioctl.c
Normal file
66
userland/kernel_modules/ioctl.c
Normal file
@@ -0,0 +1,66 @@
|
|||||||
|
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ioctl */
|
||||||
|
|
||||||
|
#define _GNU_SOURCE
|
||||||
|
#include <errno.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <sys/ioctl.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
#include <include/ioctl.h>
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
char *ioctl_path;
|
||||||
|
int fd, request, arg0, arg1, arg_int, ret;
|
||||||
|
lkmc_ioctl_struct arg_struct;
|
||||||
|
|
||||||
|
if (argc < 2) {
|
||||||
|
puts("Usage: ./prog <ioctl-file> <request> [<arg>...]");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
ioctl_path = argv[1];
|
||||||
|
request = strtol(argv[2], NULL, 10);
|
||||||
|
if (argc > 3) {
|
||||||
|
arg0 = strtol(argv[3], NULL, 10);
|
||||||
|
}
|
||||||
|
if (argc > 4) {
|
||||||
|
arg1 = strtol(argv[4], NULL, 10);
|
||||||
|
}
|
||||||
|
|
||||||
|
fd = open(ioctl_path, O_RDONLY);
|
||||||
|
if (fd == -1) {
|
||||||
|
perror("open");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
switch (request)
|
||||||
|
{
|
||||||
|
case 0:
|
||||||
|
arg_int = arg0;
|
||||||
|
ret = ioctl(fd, LKMC_IOCTL_INC, &arg_int);
|
||||||
|
if (ret != -1) {
|
||||||
|
printf("%d\n", arg_int);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
arg_struct.i = arg0;
|
||||||
|
arg_struct.j = arg1;
|
||||||
|
ret = ioctl(fd, LKMC_IOCTL_INC_DEC, &arg_struct);
|
||||||
|
if (ret != -1) {
|
||||||
|
printf("%d %d\n", arg_struct.i, arg_struct.j);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
puts("error: unknown request");
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
if (ret == -1) {
|
||||||
|
perror("ioctl");
|
||||||
|
printf("errno = %d\n", errno);
|
||||||
|
return EXIT_FAILURE;
|
||||||
|
}
|
||||||
|
close(fd);
|
||||||
|
return EXIT_SUCCESS;
|
||||||
|
}
|
||||||
@@ -7,7 +7,7 @@
|
|||||||
#include <sys/socket.h>
|
#include <sys/socket.h>
|
||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
|
|
||||||
#include "../include/netlink.h"
|
#include <include/netlink.h>
|
||||||
|
|
||||||
#define MAX_PAYLOAD 1024
|
#define MAX_PAYLOAD 1024
|
||||||
|
|
||||||
41
userland/kernel_modules/poll.c
Normal file
41
userland/kernel_modules/poll.c
Normal file
@@ -0,0 +1,41 @@
|
|||||||
|
/* https://github.com/cirosantilli/linux-kernel-module-cheat#poll */
|
||||||
|
|
||||||
|
#define _XOPEN_SOURCE 700
|
||||||
|
#include <assert.h>
|
||||||
|
#include <fcntl.h> /* creat, O_CREAT */
|
||||||
|
#include <poll.h> /* poll */
|
||||||
|
#include <stdio.h> /* printf, puts, snprintf */
|
||||||
|
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS */
|
||||||
|
#include <unistd.h> /* read */
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
char buf[1024];
|
||||||
|
int fd, i, n;
|
||||||
|
short revents;
|
||||||
|
struct pollfd pfd;
|
||||||
|
|
||||||
|
if (argc < 2) {
|
||||||
|
fprintf(stderr, "usage: %s <poll-device>\n", argv[0]);
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
fd = open(argv[1], O_RDONLY | O_NONBLOCK);
|
||||||
|
if (fd == -1) {
|
||||||
|
perror("open");
|
||||||
|
exit(EXIT_FAILURE);
|
||||||
|
}
|
||||||
|
pfd.fd = fd;
|
||||||
|
pfd.events = POLLIN;
|
||||||
|
while (1) {
|
||||||
|
puts("loop");
|
||||||
|
i = poll(&pfd, 1, -1);
|
||||||
|
if (i == -1) {
|
||||||
|
perror("poll");
|
||||||
|
assert(0);
|
||||||
|
}
|
||||||
|
revents = pfd.revents;
|
||||||
|
if (revents & POLLIN) {
|
||||||
|
n = read(pfd.fd, buf, sizeof(buf));
|
||||||
|
printf("POLLIN n=%d buf=%.*s\n", n, n, buf);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
@@ -16,8 +16,7 @@
|
|||||||
#include <assert.h>
|
#include <assert.h>
|
||||||
#include <sys/mman.h>
|
#include <sys/mman.h>
|
||||||
|
|
||||||
int main(int argc, char **argv)
|
int main(int argc, char **argv) {
|
||||||
{
|
|
||||||
char *dev = "/dev/uio0";
|
char *dev = "/dev/uio0";
|
||||||
if (argc > 1) {
|
if (argc > 1) {
|
||||||
dev = argv[1];
|
dev = argv[1];
|
||||||
@@ -30,12 +29,14 @@ int main(int argc, char **argv)
|
|||||||
}
|
}
|
||||||
|
|
||||||
/* TODO not supported by this kernel module? */
|
/* TODO not supported by this kernel module? */
|
||||||
/*int *addr = mmap(NULL, sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);*/
|
#if 0
|
||||||
/*if (addr == MAP_FAILED) {*/
|
int *addr = mmap(NULL, sysconf(_SC_PAGE_SIZE), PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
||||||
/*perror("mmap");*/
|
if (addr == MAP_FAILED) {
|
||||||
/*assert(0);*/
|
perror("mmap");
|
||||||
/*}*/
|
assert(0);
|
||||||
/**addr = 0x12345678;*/
|
}
|
||||||
|
*addr = 0x12345678;
|
||||||
|
#endif
|
||||||
|
|
||||||
while (1) {
|
while (1) {
|
||||||
uint32_t info = 1;
|
uint32_t info = 1;
|
||||||
@@ -66,8 +67,7 @@ int main(int argc, char **argv)
|
|||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
|
|
||||||
int main(void)
|
int main(void) {
|
||||||
{
|
|
||||||
int uiofd;
|
int uiofd;
|
||||||
int configfd;
|
int configfd;
|
||||||
int err;
|
int err;
|
||||||
1
userland/libs/eigen/build
Symbolic link
1
userland/libs/eigen/build
Symbolic link
@@ -0,0 +1 @@
|
|||||||
|
../build
|
||||||
@@ -1,13 +1,16 @@
|
|||||||
/* https://github.com/cirosantilli/linux-kernel-module-cheat#eigen
|
/* https://github.com/cirosantilli/linux-kernel-module-cheat#eigen
|
||||||
* Adapted from: https://eigen.tuxfamily.org/dox/GettingStarted.html
|
* Adapted from: https://eigen.tuxfamily.org/dox/GettingStarted.html
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include <iostream>
|
#include <iostream>
|
||||||
|
|
||||||
#include <Eigen/Dense>
|
#include <Eigen/Dense>
|
||||||
|
|
||||||
int main() {
|
int main() {
|
||||||
Eigen::MatrixXd m(2,2);
|
Eigen::MatrixXd m(2,2);
|
||||||
m(0,0) = 3;
|
m(0,0) = 3;
|
||||||
m(1,0) = 2.5;
|
m(1,0) = 2.5;
|
||||||
m(0,1) = -1;
|
m(0,1) = -1;
|
||||||
m(1,1) = m(1,0) + m(0,1);
|
m(1,1) = m(1,0) + m(0,1);
|
||||||
std::cout << m << std::endl;
|
std::cout << m << std::endl;
|
||||||
}
|
}
|
||||||
1
userland/libs/libdrm/build
Symbolic link
1
userland/libs/libdrm/build
Symbolic link
@@ -0,0 +1 @@
|
|||||||
|
../build
|
||||||
@@ -45,10 +45,10 @@
|
|||||||
|
|
||||||
struct modeset_dev;
|
struct modeset_dev;
|
||||||
static int modeset_find_crtc(int fd, drmModeRes *res, drmModeConnector *conn,
|
static int modeset_find_crtc(int fd, drmModeRes *res, drmModeConnector *conn,
|
||||||
struct modeset_dev *dev);
|
struct modeset_dev *dev);
|
||||||
static int modeset_create_fb(int fd, struct modeset_dev *dev);
|
static int modeset_create_fb(int fd, struct modeset_dev *dev);
|
||||||
static int modeset_setup_dev(int fd, drmModeRes *res, drmModeConnector *conn,
|
static int modeset_setup_dev(int fd, drmModeRes *res, drmModeConnector *conn,
|
||||||
struct modeset_dev *dev);
|
struct modeset_dev *dev);
|
||||||
static int modeset_open(int *out, const char *node);
|
static int modeset_open(int *out, const char *node);
|
||||||
static int modeset_prepare(int fd);
|
static int modeset_prepare(int fd);
|
||||||
static void modeset_draw(void);
|
static void modeset_draw(void);
|
||||||
@@ -81,26 +81,26 @@ static void modeset_cleanup(int fd);
|
|||||||
|
|
||||||
static int modeset_open(int *out, const char *node)
|
static int modeset_open(int *out, const char *node)
|
||||||
{
|
{
|
||||||
int fd, ret;
|
int fd, ret;
|
||||||
uint64_t has_dumb;
|
uint64_t has_dumb;
|
||||||
|
|
||||||
fd = open(node, O_RDWR | O_CLOEXEC);
|
fd = open(node, O_RDWR | O_CLOEXEC);
|
||||||
if (fd < 0) {
|
if (fd < 0) {
|
||||||
ret = -errno;
|
ret = -errno;
|
||||||
fprintf(stderr, "cannot open '%s': %m\n", node);
|
fprintf(stderr, "cannot open '%s': %s\n", node, strerror(errno));
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &has_dumb) < 0 ||
|
if (drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &has_dumb) < 0 ||
|
||||||
!has_dumb) {
|
!has_dumb) {
|
||||||
fprintf(stderr, "drm device '%s' does not support dumb buffers\n",
|
fprintf(stderr, "drm device '%s' does not support dumb buffers\n",
|
||||||
node);
|
node);
|
||||||
close(fd);
|
close(fd);
|
||||||
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
||||||
}
|
}
|
||||||
|
|
||||||
*out = fd;
|
*out = fd;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -149,20 +149,20 @@ static int modeset_open(int *out, const char *node)
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
struct modeset_dev {
|
struct modeset_dev {
|
||||||
struct modeset_dev *next;
|
struct modeset_dev *next;
|
||||||
|
|
||||||
uint32_t width;
|
uint32_t width;
|
||||||
uint32_t height;
|
uint32_t height;
|
||||||
uint32_t stride;
|
uint32_t stride;
|
||||||
uint32_t size;
|
uint32_t size;
|
||||||
uint32_t handle;
|
uint32_t handle;
|
||||||
uint8_t *map;
|
uint8_t *map;
|
||||||
|
|
||||||
drmModeModeInfo mode;
|
drmModeModeInfo mode;
|
||||||
uint32_t fb;
|
uint32_t fb;
|
||||||
uint32_t conn;
|
uint32_t conn;
|
||||||
uint32_t crtc;
|
uint32_t crtc;
|
||||||
drmModeCrtc *saved_crtc;
|
drmModeCrtc *saved_crtc;
|
||||||
};
|
};
|
||||||
|
|
||||||
static struct modeset_dev *modeset_list = NULL;
|
static struct modeset_dev *modeset_list = NULL;
|
||||||
@@ -188,57 +188,57 @@ static struct modeset_dev *modeset_list = NULL;
|
|||||||
|
|
||||||
static int modeset_prepare(int fd)
|
static int modeset_prepare(int fd)
|
||||||
{
|
{
|
||||||
drmModeRes *res;
|
drmModeRes *res;
|
||||||
drmModeConnector *conn;
|
drmModeConnector *conn;
|
||||||
unsigned int i;
|
unsigned int i;
|
||||||
struct modeset_dev *dev;
|
struct modeset_dev *dev;
|
||||||
int ret;
|
int ret;
|
||||||
|
|
||||||
/* retrieve resources */
|
/* retrieve resources */
|
||||||
res = drmModeGetResources(fd);
|
res = drmModeGetResources(fd);
|
||||||
if (!res) {
|
if (!res) {
|
||||||
fprintf(stderr, "cannot retrieve DRM resources (%d): %m\n",
|
fprintf(stderr, "cannot retrieve DRM resources (%d): %s\n",
|
||||||
errno);
|
errno, strerror(errno));
|
||||||
return -errno;
|
return -errno;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* iterate all connectors */
|
/* iterate all connectors */
|
||||||
for (i = 0; i < (unsigned int)res->count_connectors; ++i) {
|
for (i = 0; i < (unsigned int)res->count_connectors; ++i) {
|
||||||
/* get information for each connector */
|
/* get information for each connector */
|
||||||
conn = drmModeGetConnector(fd, res->connectors[i]);
|
conn = drmModeGetConnector(fd, res->connectors[i]);
|
||||||
if (!conn) {
|
if (!conn) {
|
||||||
fprintf(stderr, "cannot retrieve DRM connector %u:%u (%d): %m\n",
|
fprintf(stderr, "cannot retrieve DRM connector %u:%u (%d): %s\n",
|
||||||
i, res->connectors[i], errno);
|
i, res->connectors[i], errno, strerror(errno));
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* create a device structure */
|
/* create a device structure */
|
||||||
dev = malloc(sizeof(*dev));
|
dev = malloc(sizeof(*dev));
|
||||||
memset(dev, 0, sizeof(*dev));
|
memset(dev, 0, sizeof(*dev));
|
||||||
dev->conn = conn->connector_id;
|
dev->conn = conn->connector_id;
|
||||||
|
|
||||||
/* call helper function to prepare this connector */
|
/* call helper function to prepare this connector */
|
||||||
ret = modeset_setup_dev(fd, res, conn, dev);
|
ret = modeset_setup_dev(fd, res, conn, dev);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
if (ret != -ENOENT) {
|
if (ret != -ENOENT) {
|
||||||
errno = -ret;
|
errno = -ret;
|
||||||
fprintf(stderr, "cannot setup device for connector %u:%u (%d): %m\n",
|
fprintf(stderr, "cannot setup device for connector %u:%u (%d): %s\n",
|
||||||
i, res->connectors[i], errno);
|
i, res->connectors[i], errno, strerror(errno));
|
||||||
}
|
}
|
||||||
free(dev);
|
free(dev);
|
||||||
drmModeFreeConnector(conn);
|
drmModeFreeConnector(conn);
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* free connector data and link device into global list */
|
/* free connector data and link device into global list */
|
||||||
drmModeFreeConnector(conn);
|
drmModeFreeConnector(conn);
|
||||||
dev->next = modeset_list;
|
dev->next = modeset_list;
|
||||||
modeset_list = dev;
|
modeset_list = dev;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* free resources again */
|
/* free resources again */
|
||||||
drmModeFreeResources(res);
|
drmModeFreeResources(res);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -271,48 +271,48 @@ static int modeset_prepare(int fd)
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
static int modeset_setup_dev(int fd, drmModeRes *res, drmModeConnector *conn,
|
static int modeset_setup_dev(int fd, drmModeRes *res, drmModeConnector *conn,
|
||||||
struct modeset_dev *dev)
|
struct modeset_dev *dev)
|
||||||
{
|
{
|
||||||
int ret;
|
int ret;
|
||||||
|
|
||||||
/* check if a monitor is connected */
|
/* check if a monitor is connected */
|
||||||
if (conn->connection != DRM_MODE_CONNECTED) {
|
if (conn->connection != DRM_MODE_CONNECTED) {
|
||||||
fprintf(stderr, "ignoring unused connector %u\n",
|
fprintf(stderr, "ignoring unused connector %u\n",
|
||||||
conn->connector_id);
|
conn->connector_id);
|
||||||
return -ENOENT;
|
return -ENOENT;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* check if there is at least one valid mode */
|
/* check if there is at least one valid mode */
|
||||||
if (conn->count_modes == 0) {
|
if (conn->count_modes == 0) {
|
||||||
fprintf(stderr, "no valid mode for connector %u\n",
|
fprintf(stderr, "no valid mode for connector %u\n",
|
||||||
conn->connector_id);
|
conn->connector_id);
|
||||||
return -EFAULT;
|
return -EFAULT;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* copy the mode information into our device structure */
|
/* copy the mode information into our device structure */
|
||||||
memcpy(&dev->mode, &conn->modes[0], sizeof(dev->mode));
|
memcpy(&dev->mode, &conn->modes[0], sizeof(dev->mode));
|
||||||
dev->width = conn->modes[0].hdisplay;
|
dev->width = conn->modes[0].hdisplay;
|
||||||
dev->height = conn->modes[0].vdisplay;
|
dev->height = conn->modes[0].vdisplay;
|
||||||
fprintf(stderr, "mode for connector %u is %ux%u\n",
|
fprintf(stderr, "mode for connector %u is %ux%u\n",
|
||||||
conn->connector_id, dev->width, dev->height);
|
conn->connector_id, dev->width, dev->height);
|
||||||
|
|
||||||
/* find a crtc for this connector */
|
/* find a crtc for this connector */
|
||||||
ret = modeset_find_crtc(fd, res, conn, dev);
|
ret = modeset_find_crtc(fd, res, conn, dev);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
fprintf(stderr, "no valid crtc for connector %u\n",
|
fprintf(stderr, "no valid crtc for connector %u\n",
|
||||||
conn->connector_id);
|
conn->connector_id);
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* create a framebuffer for this CRTC */
|
/* create a framebuffer for this CRTC */
|
||||||
ret = modeset_create_fb(fd, dev);
|
ret = modeset_create_fb(fd, dev);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
fprintf(stderr, "cannot create framebuffer for connector %u\n",
|
fprintf(stderr, "cannot create framebuffer for connector %u\n",
|
||||||
conn->connector_id);
|
conn->connector_id);
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -338,80 +338,80 @@ static int modeset_setup_dev(int fd, drmModeRes *res, drmModeConnector *conn,
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
static int modeset_find_crtc(int fd, drmModeRes *res, drmModeConnector *conn,
|
static int modeset_find_crtc(int fd, drmModeRes *res, drmModeConnector *conn,
|
||||||
struct modeset_dev *dev)
|
struct modeset_dev *dev)
|
||||||
{
|
{
|
||||||
drmModeEncoder *enc;
|
drmModeEncoder *enc;
|
||||||
unsigned int i, j;
|
unsigned int i, j;
|
||||||
int32_t crtc;
|
int32_t crtc;
|
||||||
struct modeset_dev *iter;
|
struct modeset_dev *iter;
|
||||||
|
|
||||||
/* first try the currently conected encoder+crtc */
|
/* first try the currently conected encoder+crtc */
|
||||||
if (conn->encoder_id)
|
if (conn->encoder_id)
|
||||||
enc = drmModeGetEncoder(fd, conn->encoder_id);
|
enc = drmModeGetEncoder(fd, conn->encoder_id);
|
||||||
else
|
else
|
||||||
enc = NULL;
|
enc = NULL;
|
||||||
|
|
||||||
if (enc) {
|
if (enc) {
|
||||||
if (enc->crtc_id) {
|
if (enc->crtc_id) {
|
||||||
crtc = enc->crtc_id;
|
crtc = enc->crtc_id;
|
||||||
for (iter = modeset_list; iter; iter = iter->next) {
|
for (iter = modeset_list; iter; iter = iter->next) {
|
||||||
if ((int32_t)iter->crtc == crtc) {
|
if ((int32_t)iter->crtc == crtc) {
|
||||||
crtc = -1;
|
crtc = -1;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if (crtc >= 0) {
|
if (crtc >= 0) {
|
||||||
drmModeFreeEncoder(enc);
|
drmModeFreeEncoder(enc);
|
||||||
dev->crtc = crtc;
|
dev->crtc = crtc;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
drmModeFreeEncoder(enc);
|
drmModeFreeEncoder(enc);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* If the connector is not currently bound to an encoder or if the
|
/* If the connector is not currently bound to an encoder or if the
|
||||||
* encoder+crtc is already used by another connector (actually unlikely
|
* encoder+crtc is already used by another connector (actually unlikely
|
||||||
* but lets be safe), iterate all other available encoders to find a
|
* but lets be safe), iterate all other available encoders to find a
|
||||||
* matching CRTC. */
|
* matching CRTC. */
|
||||||
for (i = 0; i < (unsigned int)conn->count_encoders; ++i) {
|
for (i = 0; i < (unsigned int)conn->count_encoders; ++i) {
|
||||||
enc = drmModeGetEncoder(fd, conn->encoders[i]);
|
enc = drmModeGetEncoder(fd, conn->encoders[i]);
|
||||||
if (!enc) {
|
if (!enc) {
|
||||||
fprintf(stderr, "cannot retrieve encoder %u:%u (%d): %m\n",
|
fprintf(stderr, "cannot retrieve encoder %u:%u (%d): %s\n",
|
||||||
i, conn->encoders[i], errno);
|
i, conn->encoders[i], errno, strerror(errno));
|
||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* iterate all global CRTCs */
|
/* iterate all global CRTCs */
|
||||||
for (j = 0; j < (unsigned int)res->count_crtcs; ++j) {
|
for (j = 0; j < (unsigned int)res->count_crtcs; ++j) {
|
||||||
/* check whether this CRTC works with the encoder */
|
/* check whether this CRTC works with the encoder */
|
||||||
if (!(enc->possible_crtcs & (1 << j)))
|
if (!(enc->possible_crtcs & (1 << j)))
|
||||||
continue;
|
continue;
|
||||||
|
|
||||||
/* check that no other device already uses this CRTC */
|
/* check that no other device already uses this CRTC */
|
||||||
crtc = res->crtcs[j];
|
crtc = res->crtcs[j];
|
||||||
for (iter = modeset_list; iter; iter = iter->next) {
|
for (iter = modeset_list; iter; iter = iter->next) {
|
||||||
if ((int32_t)iter->crtc == crtc) {
|
if ((int32_t)iter->crtc == crtc) {
|
||||||
crtc = -1;
|
crtc = -1;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/* we have found a CRTC, so save it and return */
|
/* we have found a CRTC, so save it and return */
|
||||||
if (crtc >= 0) {
|
if (crtc >= 0) {
|
||||||
drmModeFreeEncoder(enc);
|
drmModeFreeEncoder(enc);
|
||||||
dev->crtc = crtc;
|
dev->crtc = crtc;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
drmModeFreeEncoder(enc);
|
drmModeFreeEncoder(enc);
|
||||||
}
|
}
|
||||||
|
|
||||||
fprintf(stderr, "cannot find suitable CRTC for connector %u\n",
|
fprintf(stderr, "cannot find suitable CRTC for connector %u\n",
|
||||||
conn->connector_id);
|
conn->connector_id);
|
||||||
return -ENOENT;
|
return -ENOENT;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -441,69 +441,69 @@ static int modeset_find_crtc(int fd, drmModeRes *res, drmModeConnector *conn,
|
|||||||
|
|
||||||
static int modeset_create_fb(int fd, struct modeset_dev *dev)
|
static int modeset_create_fb(int fd, struct modeset_dev *dev)
|
||||||
{
|
{
|
||||||
struct drm_mode_create_dumb creq;
|
struct drm_mode_create_dumb creq;
|
||||||
struct drm_mode_destroy_dumb dreq;
|
struct drm_mode_destroy_dumb dreq;
|
||||||
struct drm_mode_map_dumb mreq;
|
struct drm_mode_map_dumb mreq;
|
||||||
int ret;
|
int ret;
|
||||||
|
|
||||||
/* create dumb buffer */
|
/* create dumb buffer */
|
||||||
memset(&creq, 0, sizeof(creq));
|
memset(&creq, 0, sizeof(creq));
|
||||||
creq.width = dev->width;
|
creq.width = dev->width;
|
||||||
creq.height = dev->height;
|
creq.height = dev->height;
|
||||||
creq.bpp = 32;
|
creq.bpp = 32;
|
||||||
ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &creq);
|
ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &creq);
|
||||||
if (ret < 0) {
|
if (ret < 0) {
|
||||||
fprintf(stderr, "cannot create dumb buffer (%d): %m\n",
|
fprintf(stderr, "cannot create dumb buffer (%d): %s\n",
|
||||||
errno);
|
errno, strerror(errno));
|
||||||
return -errno;
|
return -errno;
|
||||||
}
|
}
|
||||||
dev->stride = creq.pitch;
|
dev->stride = creq.pitch;
|
||||||
dev->size = creq.size;
|
dev->size = creq.size;
|
||||||
dev->handle = creq.handle;
|
dev->handle = creq.handle;
|
||||||
|
|
||||||
/* create framebuffer object for the dumb-buffer */
|
/* create framebuffer object for the dumb-buffer */
|
||||||
ret = drmModeAddFB(fd, dev->width, dev->height, 24, 32, dev->stride,
|
ret = drmModeAddFB(fd, dev->width, dev->height, 24, 32, dev->stride,
|
||||||
dev->handle, &dev->fb);
|
dev->handle, &dev->fb);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
fprintf(stderr, "cannot create framebuffer (%d): %m\n",
|
fprintf(stderr, "cannot create framebuffer (%d): %s\n",
|
||||||
errno);
|
errno, strerror(errno));
|
||||||
ret = -errno;
|
ret = -errno;
|
||||||
goto err_destroy;
|
goto err_destroy;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* prepare buffer for memory mapping */
|
/* prepare buffer for memory mapping */
|
||||||
memset(&mreq, 0, sizeof(mreq));
|
memset(&mreq, 0, sizeof(mreq));
|
||||||
mreq.handle = dev->handle;
|
mreq.handle = dev->handle;
|
||||||
ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &mreq);
|
ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &mreq);
|
||||||
if (ret) {
|
if (ret) {
|
||||||
fprintf(stderr, "cannot map dumb buffer (%d): %m\n",
|
fprintf(stderr, "cannot map dumb buffer (%d): %s\n",
|
||||||
errno);
|
errno, strerror(errno));
|
||||||
ret = -errno;
|
ret = -errno;
|
||||||
goto err_fb;
|
goto err_fb;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* perform actual memory mapping */
|
/* perform actual memory mapping */
|
||||||
dev->map = mmap(0, dev->size, PROT_READ | PROT_WRITE, MAP_SHARED,
|
dev->map = mmap(0, dev->size, PROT_READ | PROT_WRITE, MAP_SHARED,
|
||||||
fd, mreq.offset);
|
fd, mreq.offset);
|
||||||
if (dev->map == MAP_FAILED) {
|
if (dev->map == MAP_FAILED) {
|
||||||
fprintf(stderr, "cannot mmap dumb buffer (%d): %m\n",
|
fprintf(stderr, "cannot mmap dumb buffer (%d): %s\n",
|
||||||
errno);
|
errno, strerror(errno));
|
||||||
ret = -errno;
|
ret = -errno;
|
||||||
goto err_fb;
|
goto err_fb;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* clear the framebuffer to 0 */
|
/* clear the framebuffer to 0 */
|
||||||
memset(dev->map, 0, dev->size);
|
memset(dev->map, 0, dev->size);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
|
|
||||||
err_fb:
|
err_fb:
|
||||||
drmModeRmFB(fd, dev->fb);
|
drmModeRmFB(fd, dev->fb);
|
||||||
err_destroy:
|
err_destroy:
|
||||||
memset(&dreq, 0, sizeof(dreq));
|
memset(&dreq, 0, sizeof(dreq));
|
||||||
dreq.handle = dev->handle;
|
dreq.handle = dev->handle;
|
||||||
drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dreq);
|
drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dreq);
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -543,56 +543,56 @@ err_destroy:
|
|||||||
|
|
||||||
int main(int argc, char **argv)
|
int main(int argc, char **argv)
|
||||||
{
|
{
|
||||||
int ret, fd;
|
int ret, fd;
|
||||||
const char *card;
|
const char *card;
|
||||||
struct modeset_dev *iter;
|
struct modeset_dev *iter;
|
||||||
|
|
||||||
/* check which DRM device to open */
|
/* check which DRM device to open */
|
||||||
if (argc > 1)
|
if (argc > 1)
|
||||||
card = argv[1];
|
card = argv[1];
|
||||||
else
|
else
|
||||||
card = "/dev/dri/card0";
|
card = "/dev/dri/card0";
|
||||||
|
|
||||||
fprintf(stderr, "using card '%s'\n", card);
|
fprintf(stderr, "using card '%s'\n", card);
|
||||||
|
|
||||||
/* open the DRM device */
|
/* open the DRM device */
|
||||||
ret = modeset_open(&fd, card);
|
ret = modeset_open(&fd, card);
|
||||||
if (ret)
|
if (ret)
|
||||||
goto out_return;
|
goto out_return;
|
||||||
|
|
||||||
/* prepare all connectors and CRTCs */
|
/* prepare all connectors and CRTCs */
|
||||||
ret = modeset_prepare(fd);
|
ret = modeset_prepare(fd);
|
||||||
if (ret)
|
if (ret)
|
||||||
goto out_close;
|
goto out_close;
|
||||||
|
|
||||||
/* perform actual modesetting on each found connector+CRTC */
|
/* perform actual modesetting on each found connector+CRTC */
|
||||||
for (iter = modeset_list; iter; iter = iter->next) {
|
for (iter = modeset_list; iter; iter = iter->next) {
|
||||||
iter->saved_crtc = drmModeGetCrtc(fd, iter->crtc);
|
iter->saved_crtc = drmModeGetCrtc(fd, iter->crtc);
|
||||||
ret = drmModeSetCrtc(fd, iter->crtc, iter->fb, 0, 0,
|
ret = drmModeSetCrtc(fd, iter->crtc, iter->fb, 0, 0,
|
||||||
&iter->conn, 1, &iter->mode);
|
&iter->conn, 1, &iter->mode);
|
||||||
if (ret)
|
if (ret)
|
||||||
fprintf(stderr, "cannot set CRTC for connector %u (%d): %m\n",
|
fprintf(stderr, "cannot set CRTC for connector %u (%d): %s\n",
|
||||||
iter->conn, errno);
|
iter->conn, errno, strerror(errno));
|
||||||
}
|
}
|
||||||
|
|
||||||
/* draw some colors for 5seconds */
|
/* draw some colors for 5seconds */
|
||||||
modeset_draw();
|
modeset_draw();
|
||||||
|
|
||||||
/* cleanup everything */
|
/* cleanup everything */
|
||||||
modeset_cleanup(fd);
|
modeset_cleanup(fd);
|
||||||
|
|
||||||
ret = 0;
|
ret = 0;
|
||||||
|
|
||||||
out_close:
|
out_close:
|
||||||
close(fd);
|
close(fd);
|
||||||
out_return:
|
out_return:
|
||||||
if (ret) {
|
if (ret) {
|
||||||
errno = -ret;
|
errno = -ret;
|
||||||
fprintf(stderr, "modeset failed with error %d: %m\n", errno);
|
fprintf(stderr, "modeset failed with error %d: %s\n", errno, strerror(errno));
|
||||||
} else {
|
} else {
|
||||||
fprintf(stderr, "exiting\n");
|
fprintf(stderr, "exiting\n");
|
||||||
}
|
}
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -602,15 +602,15 @@ out_return:
|
|||||||
|
|
||||||
static uint8_t next_color(bool *up, uint8_t cur, unsigned int mod)
|
static uint8_t next_color(bool *up, uint8_t cur, unsigned int mod)
|
||||||
{
|
{
|
||||||
uint8_t next;
|
uint8_t next;
|
||||||
|
|
||||||
next = cur + (*up ? 1 : -1) * (rand() % mod);
|
next = cur + (*up ? 1 : -1) * (rand() % mod);
|
||||||
if ((*up && next < cur) || (!*up && next > cur)) {
|
if ((*up && next < cur) || (!*up && next > cur)) {
|
||||||
*up = !*up;
|
*up = !*up;
|
||||||
next = cur;
|
next = cur;
|
||||||
}
|
}
|
||||||
|
|
||||||
return next;
|
return next;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -635,34 +635,34 @@ static uint8_t next_color(bool *up, uint8_t cur, unsigned int mod)
|
|||||||
|
|
||||||
static void modeset_draw(void)
|
static void modeset_draw(void)
|
||||||
{
|
{
|
||||||
uint8_t r, g, b;
|
uint8_t r, g, b;
|
||||||
bool r_up, g_up, b_up;
|
bool r_up, g_up, b_up;
|
||||||
unsigned int i, j, k, off;
|
unsigned int i, j, k, off;
|
||||||
struct modeset_dev *iter;
|
struct modeset_dev *iter;
|
||||||
|
|
||||||
srand(time(NULL));
|
srand(time(NULL));
|
||||||
r = rand() % 0xff;
|
r = rand() % 0xff;
|
||||||
g = rand() % 0xff;
|
g = rand() % 0xff;
|
||||||
b = rand() % 0xff;
|
b = rand() % 0xff;
|
||||||
r_up = g_up = b_up = true;
|
r_up = g_up = b_up = true;
|
||||||
|
|
||||||
for (i = 0; i < 50; ++i) {
|
for (i = 0; i < 50; ++i) {
|
||||||
r = next_color(&r_up, r, 20);
|
r = next_color(&r_up, r, 20);
|
||||||
g = next_color(&g_up, g, 10);
|
g = next_color(&g_up, g, 10);
|
||||||
b = next_color(&b_up, b, 5);
|
b = next_color(&b_up, b, 5);
|
||||||
|
|
||||||
for (iter = modeset_list; iter; iter = iter->next) {
|
for (iter = modeset_list; iter; iter = iter->next) {
|
||||||
for (j = 0; j < iter->height; ++j) {
|
for (j = 0; j < iter->height; ++j) {
|
||||||
for (k = 0; k < iter->width; ++k) {
|
for (k = 0; k < iter->width; ++k) {
|
||||||
off = iter->stride * j + k * 4;
|
off = iter->stride * j + k * 4;
|
||||||
*(uint32_t*)&iter->map[off] =
|
*(uint32_t*)&iter->map[off] =
|
||||||
(r << 16) | (g << 8) | b;
|
(r << 16) | (g << 8) | b;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
usleep(100000);
|
usleep(100000);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
@@ -674,39 +674,41 @@ static void modeset_draw(void)
|
|||||||
|
|
||||||
static void modeset_cleanup(int fd)
|
static void modeset_cleanup(int fd)
|
||||||
{
|
{
|
||||||
struct modeset_dev *iter;
|
struct modeset_dev *iter;
|
||||||
struct drm_mode_destroy_dumb dreq;
|
struct drm_mode_destroy_dumb dreq;
|
||||||
|
|
||||||
while (modeset_list) {
|
while (modeset_list) {
|
||||||
/* remove from global list */
|
/* remove from global list */
|
||||||
iter = modeset_list;
|
iter = modeset_list;
|
||||||
modeset_list = iter->next;
|
modeset_list = iter->next;
|
||||||
|
|
||||||
/* restore saved CRTC configuration */
|
/* restore saved CRTC configuration */
|
||||||
drmModeSetCrtc(fd,
|
drmModeSetCrtc(
|
||||||
iter->saved_crtc->crtc_id,
|
fd,
|
||||||
iter->saved_crtc->buffer_id,
|
iter->saved_crtc->crtc_id,
|
||||||
iter->saved_crtc->x,
|
iter->saved_crtc->buffer_id,
|
||||||
iter->saved_crtc->y,
|
iter->saved_crtc->x,
|
||||||
&iter->conn,
|
iter->saved_crtc->y,
|
||||||
1,
|
&iter->conn,
|
||||||
&iter->saved_crtc->mode);
|
1,
|
||||||
drmModeFreeCrtc(iter->saved_crtc);
|
&iter->saved_crtc->mode
|
||||||
|
);
|
||||||
|
drmModeFreeCrtc(iter->saved_crtc);
|
||||||
|
|
||||||
/* unmap buffer */
|
/* unmap buffer */
|
||||||
munmap(iter->map, iter->size);
|
munmap(iter->map, iter->size);
|
||||||
|
|
||||||
/* delete framebuffer */
|
/* delete framebuffer */
|
||||||
drmModeRmFB(fd, iter->fb);
|
drmModeRmFB(fd, iter->fb);
|
||||||
|
|
||||||
/* delete dumb buffer */
|
/* delete dumb buffer */
|
||||||
memset(&dreq, 0, sizeof(dreq));
|
memset(&dreq, 0, sizeof(dreq));
|
||||||
dreq.handle = iter->handle;
|
dreq.handle = iter->handle;
|
||||||
drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dreq);
|
drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &dreq);
|
||||||
|
|
||||||
/* free allocated memory */
|
/* free allocated memory */
|
||||||
free(iter);
|
free(iter);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
1
userland/libs/openblas/build
Symbolic link
1
userland/libs/openblas/build
Symbolic link
@@ -0,0 +1 @@
|
|||||||
|
../build
|
||||||
@@ -1,3 +1,5 @@
|
|||||||
Programs in this directory rely on Linux kernel specific functionality such as `/proc`.
|
Programs in this directory rely on Linux kernel specific functionality such as `/proc` or raw system calls.
|
||||||
|
|
||||||
These programs may also conform to ANSI C or POSIX, but we put them here because you can only observe them at work under Linux.
|
These programs may also conform to ANSI C or POSIX, but we put them here because you can only observe them at work under Linux.
|
||||||
|
|
||||||
|
Many of these programs use glibc or GCC extensions.
|
||||||
|
|||||||
25
userland/linux/init_env_poweroff.c
Normal file
25
userland/linux/init_env_poweroff.c
Normal file
@@ -0,0 +1,25 @@
|
|||||||
|
#define _XOPEN_SOURCE 700
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <sys/reboot.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
int i;
|
||||||
|
|
||||||
|
puts("args:");
|
||||||
|
for (i = 0; i < argc; ++i)
|
||||||
|
puts(argv[i]);
|
||||||
|
puts("");
|
||||||
|
|
||||||
|
puts("env:");
|
||||||
|
extern char **environ;
|
||||||
|
char **env = environ;
|
||||||
|
while (*env) {
|
||||||
|
printf("%s\n", *env);
|
||||||
|
env++;
|
||||||
|
}
|
||||||
|
puts("");
|
||||||
|
|
||||||
|
/* Poweroff. */
|
||||||
|
reboot(RB_POWER_OFF);
|
||||||
|
}
|
||||||
@@ -5,5 +5,5 @@
|
|||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
|
|
||||||
int main(void) {
|
int main(void) {
|
||||||
reboot(RB_POWER_OFF);
|
reboot(RB_POWER_OFF);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -13,29 +13,29 @@ int bss = 0;
|
|||||||
int data = 1;
|
int data = 1;
|
||||||
|
|
||||||
int main(__attribute__((unused)) int argc, char **argv) {
|
int main(__attribute__((unused)) int argc, char **argv) {
|
||||||
int i, *ip;
|
int i, *ip;
|
||||||
uint64_t uint64;
|
uint64_t uint64;
|
||||||
FILE *fp;
|
FILE *fp;
|
||||||
|
|
||||||
/* Loaded addresses. */
|
/* Loaded addresses. */
|
||||||
printf("&i = %p\n", (void *)&i);
|
printf("&i = %p\n", (void *)&i);
|
||||||
printf("&argv[0] = %p\n", (void *)&argv[0]);
|
printf("&argv[0] = %p\n", (void *)&argv[0]);
|
||||||
printf("&main = %p\n", (void *)(intptr_t)main);
|
printf("&main = %p\n", (void *)(intptr_t)main);
|
||||||
printf("&bss = %p\n", (void *)&bss);
|
printf("&bss = %p\n", (void *)&bss);
|
||||||
printf("&data = %p\n", (void *)&data);
|
printf("&data = %p\n", (void *)&data);
|
||||||
|
|
||||||
/* Misc syscalls. */
|
/* Misc syscalls. */
|
||||||
printf("time(NULL) = %ju\n", (uintmax_t)time(NULL));
|
printf("time(NULL) = %ju\n", (uintmax_t)time(NULL));
|
||||||
printf("pid = %ju\n", (uintmax_t)getpid());
|
printf("pid = %ju\n", (uintmax_t)getpid());
|
||||||
|
|
||||||
/* malloc */
|
/* malloc */
|
||||||
ip = malloc(sizeof(*ip));
|
ip = malloc(sizeof(*ip));
|
||||||
printf("&malloc = %p\n", (void *)ip);
|
printf("&malloc = %p\n", (void *)ip);
|
||||||
free(ip);
|
free(ip);
|
||||||
|
|
||||||
/* /dev/urandom */
|
/* /dev/urandom */
|
||||||
fp = fopen("/dev/urandom", "rb");
|
fp = fopen("/dev/urandom", "rb");
|
||||||
fread(&uint64, sizeof(uint64), 1, fp);
|
fread(&uint64, sizeof(uint64), 1, fp);
|
||||||
printf("/dev/urandom = %" PRIx64 "\n", uint64);
|
printf("/dev/urandom = %" PRIx64 "\n", uint64);
|
||||||
fclose(fp);
|
fclose(fp);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -10,31 +10,31 @@
|
|||||||
#include <unistd.h>
|
#include <unistd.h>
|
||||||
|
|
||||||
void* main_thread_0(void *arg) {
|
void* main_thread_0(void *arg) {
|
||||||
int i;
|
int i;
|
||||||
cpu_set_t mask;
|
cpu_set_t mask;
|
||||||
CPU_ZERO(&mask);
|
CPU_ZERO(&mask);
|
||||||
CPU_SET(*((int*)arg), &mask);
|
CPU_SET(*((int*)arg), &mask);
|
||||||
sched_setaffinity(0, sizeof(cpu_set_t), &mask);
|
sched_setaffinity(0, sizeof(cpu_set_t), &mask);
|
||||||
i = 0;
|
i = 0;
|
||||||
while (true) {
|
while (true) {
|
||||||
printf("0 %d\n", i);
|
printf("0 %d\n", i);
|
||||||
sleep(1);
|
sleep(1);
|
||||||
i++;
|
i++;
|
||||||
}
|
}
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
void* main_thread_1(void *arg) {
|
void* main_thread_1(void *arg) {
|
||||||
int i;
|
int i;
|
||||||
cpu_set_t mask;
|
cpu_set_t mask;
|
||||||
CPU_ZERO(&mask);
|
CPU_ZERO(&mask);
|
||||||
CPU_SET(*((int*)arg), &mask);
|
CPU_SET(*((int*)arg), &mask);
|
||||||
sched_setaffinity(1, sizeof(cpu_set_t), &mask);
|
sched_setaffinity(1, sizeof(cpu_set_t), &mask);
|
||||||
i = 0;
|
i = 0;
|
||||||
while (true) {
|
while (true) {
|
||||||
printf("1 %d\n", i);
|
printf("1 %d\n", i);
|
||||||
sleep(1);
|
sleep(1);
|
||||||
i++;
|
i++;
|
||||||
}
|
}
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
@@ -43,8 +43,8 @@ int main(void) {
|
|||||||
enum NUM_THREADS {NUM_THREADS = 2};
|
enum NUM_THREADS {NUM_THREADS = 2};
|
||||||
pthread_t threads[NUM_THREADS];
|
pthread_t threads[NUM_THREADS];
|
||||||
int thread_args[NUM_THREADS];
|
int thread_args[NUM_THREADS];
|
||||||
pthread_create(&threads[0], NULL, main_thread_0, (void*)&thread_args[0]);
|
pthread_create(&threads[0], NULL, main_thread_0, (void*)&thread_args[0]);
|
||||||
pthread_create(&threads[1], NULL, main_thread_1, (void*)&thread_args[1]);
|
pthread_create(&threads[1], NULL, main_thread_1, (void*)&thread_args[1]);
|
||||||
pthread_join(threads[0], NULL);
|
pthread_join(threads[0], NULL);
|
||||||
pthread_join(threads[1], NULL);
|
pthread_join(threads[1], NULL);
|
||||||
return EXIT_SUCCESS;
|
return EXIT_SUCCESS;
|
||||||
@@ -1,41 +0,0 @@
|
|||||||
/* https://github.com/cirosantilli/linux-kernel-module-cheat#poll */
|
|
||||||
|
|
||||||
#define _XOPEN_SOURCE 700
|
|
||||||
#include <assert.h>
|
|
||||||
#include <fcntl.h> /* creat, O_CREAT */
|
|
||||||
#include <poll.h> /* poll */
|
|
||||||
#include <stdio.h> /* printf, puts, snprintf */
|
|
||||||
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS */
|
|
||||||
#include <unistd.h> /* read */
|
|
||||||
|
|
||||||
int main(int argc, char **argv) {
|
|
||||||
char buf[1024];
|
|
||||||
int fd, i, n;
|
|
||||||
short revents;
|
|
||||||
struct pollfd pfd;
|
|
||||||
|
|
||||||
if (argc < 2) {
|
|
||||||
fprintf(stderr, "usage: %s <poll-device>\n", argv[0]);
|
|
||||||
exit(EXIT_FAILURE);
|
|
||||||
}
|
|
||||||
fd = open(argv[1], O_RDONLY | O_NONBLOCK);
|
|
||||||
if (fd == -1) {
|
|
||||||
perror("open");
|
|
||||||
exit(EXIT_FAILURE);
|
|
||||||
}
|
|
||||||
pfd.fd = fd;
|
|
||||||
pfd.events = POLLIN;
|
|
||||||
while (1) {
|
|
||||||
puts("loop");
|
|
||||||
i = poll(&pfd, 1, -1);
|
|
||||||
if (i == -1) {
|
|
||||||
perror("poll");
|
|
||||||
assert(0);
|
|
||||||
}
|
|
||||||
revents = pfd.revents;
|
|
||||||
if (revents & POLLIN) {
|
|
||||||
n = read(pfd.fd, buf, sizeof(buf));
|
|
||||||
printf("POLLIN n=%d buf=%.*s\n", n, n, buf);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@@ -11,11 +11,11 @@ enum { I0 = 0x12345678 };
|
|||||||
static volatile uint32_t i = I0;
|
static volatile uint32_t i = I0;
|
||||||
|
|
||||||
int main(void) {
|
int main(void) {
|
||||||
printf("vaddr %p\n", (void *)&i);
|
printf("vaddr %p\n", (void *)&i);
|
||||||
printf("pid %ju\n", (uintmax_t)getpid());
|
printf("pid %ju\n", (uintmax_t)getpid());
|
||||||
while (i == I0) {
|
while (i == I0) {
|
||||||
sleep(1);
|
sleep(1);
|
||||||
}
|
}
|
||||||
printf("i %jx\n", (uintmax_t)i);
|
printf("i %jx\n", (uintmax_t)i);
|
||||||
return EXIT_SUCCESS;
|
return EXIT_SUCCESS;
|
||||||
}
|
}
|
||||||
@@ -1,10 +0,0 @@
|
|||||||
/* Print each command line argument received, one per line. */
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
|
|
||||||
int main(int argc, char **argv) {
|
|
||||||
size_t i;
|
|
||||||
for (i = 0; i < (size_t)argc; ++i)
|
|
||||||
printf("%s\n", argv[i]);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
Reference in New Issue
Block a user