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qemu-e2k/tests/plugin/Makefile

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tests/plugin: add sample plugins Pass arguments with -plugin=libfoo.so,arg=bar,arg=baz Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-10-25 18:57:04 +02:00
BUILD_DIR := $(CURDIR)/../..
include $(BUILD_DIR)/config-host.mak
include $(SRC_PATH)/rules.mak
$(call set-vpath, $(SRC_PATH)/tests/plugin)
NAMES :=
NAMES += bb
NAMES += empty
NAMES += insn
NAMES += mem
tests/plugin: add a hotblocks plugin This is a simple plugin to track which translation blocks are call most often. As we don't have a view of the internals of TCG we can only work by the address of the start of the block so we also need to tracks how often the address is translated. As there will be multiple blocks starting at the same address. We can try and work around this by futzing the value to feed to the hash with the insn count. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-20 17:14:44 +02:00
NAMES += hotblocks
tests/plugin: add instruction execution breakdown This gives a break down of instruction classes and individual instruction types. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-21 11:15:53 +02:00
NAMES += howvec
tests/plugin: add hotpages to analyse memory access patterns This plugin gives a summary of access patterns grouped by "pages" and showing read/write patterns by vCPUS. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-06-11 14:29:55 +02:00
NAMES += hotpages
plugins: new lockstep plugin for debugging TCG changes When we make changes to the TCG we sometimes cause regressions that are deep into the execution cycle of the guest. Debugging this often requires comparing large volumes of trace information to figure out where behaviour has diverged. The lockstep plugin utilises a shared socket so two QEMU's running with the plugin will write their current execution position and wait to receive the position of their partner process. When execution diverges the plugins output where they were and the previous few blocks before unloading themselves and letting execution continue. Originally I planned for this to be most useful with -icount but it turns out you can get divergence pretty quickly due to asynchronous qemu_cpu_kick_rr_cpus() events causing one side to eventually run into a short block a few cycles before the other side. For this reason I've added a bit of tracking and I think the divergence reporting could be finessed to report only if we really start to diverge in execution. An example run would be: qemu-system-sparc -monitor none -parallel none -net none \ -M SS-20 -m 256 -kernel day11/zImage.elf \ -plugin ./tests/plugin/liblockstep.so,arg=lockstep-sparc.sock \ -d plugin,nochain with an identical command in another window in the same working directory. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Robert Foley <robert.foley@linaro.org> Tested-by: Robert Foley <robert.foley@linaro.org> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Message-Id: <20200610155509.12850-3-alex.bennee@linaro.org>
2020-06-10 17:55:05 +02:00
NAMES += lockstep
tests/plugin: add sample plugins Pass arguments with -plugin=libfoo.so,arg=bar,arg=baz Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-10-25 18:57:04 +02:00
SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES)))
configure: Add -Wno-psabi On aarch64, gcc 9.3 is generating qemu/exec.c: In function ‘address_space_translate_iommu’: qemu/exec.c:431:28: note: parameter passing for argument of type \ ‘MemTxAttrs’ {aka ‘struct MemTxAttrs’} changed in GCC 9.1 and many other repetitions. This structure, and the functions amongst which it is passed, are not part of a QEMU public API. Therefore we do not care how the compiler passes the argument, so long as the compiler is self-consistent. The only portion of QEMU which does have a public api, and so must have a stable abi, is "qemu/plugin.h". We test this by forcing -Wpsabi in tests/plugin/Makefile. Buglink: https://bugs.launchpad.net/qemu/+bug/1881552 Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20200617201309.1640952-6-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-06-17 22:13:08 +02:00
QEMU_CFLAGS += -fPIC -Wpsabi
tests/plugin: add sample plugins Pass arguments with -plugin=libfoo.so,arg=bar,arg=baz Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-10-25 18:57:04 +02:00
QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu
all: $(SONAMES)
lib%.so: %.o
$(CC) -shared -Wl,-soname,$@ -o $@ $^ $(LDLIBS)
clean:
rm -f *.o *.so *.d
rm -Rf .libs
.PHONY: all clean