mirror of
https://github.com/xen-project/xen.git
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Ian Campbell
b7f76a699d
libxenevtchn will provide a stable API and ABI for accessing the evtchn device. The functions are moved into the xenevtchn namespace to make a clean break from libxc and avoid ambiguity regarding which interfaces are stable. All in-tree users are updated to use the new names. Upon request (via #define XC_WANT_COMPAT_EVTCHN_API) libxenctrl will provide a compat API for the old names. This is used by qemu-xen for the time being. qemu-xen-traditional is updated in lockstep. This leaves a few event channel related functions which go via privcmd (EVTCHNOP) rather than ioctls on the /dev/xen/evtchn device in libxenctrl. Specifically: - xc_evtchn_alloc_unbound - xc_evtchn_reset - xc_evtchn_status Note that xc_evtchn_alloc_unbound's functionality is also provided by xenevtchn_bind_unbound_port() (née xc_evtchn_bind_unbound_port) and is probably redundant. These functions do not appear to be needed by qemu-dm, qemu-pv (provision of device model to HVM guests and PV backends respectively) or by libvchan suggesting they are not needed by non-toolstack uses of event channels. QEMU does use these in hw/xenpv/xen_domainbuild.c but that is a "toolstack use". The new library uses a version script to ensure that only expected symbols are exported and to version them such that ABI guarantees can be kept in the future. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> [ ijc -- updated MINIOS_UPSTREAM_REVISION and QEMU_TRADITIONAL_REVISION ]
60 lines
1.8 KiB
Makefile
60 lines
1.8 KiB
Makefile
#
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# tools/libvchan/Makefile
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#
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XEN_ROOT = $(CURDIR)/../..
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include $(XEN_ROOT)/tools/Rules.mk
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LIBVCHAN_OBJS = init.o io.o
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NODE_OBJS = node.o
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NODE2_OBJS = node-select.o
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LIBVCHAN_PIC_OBJS = $(patsubst %.o,%.opic,$(LIBVCHAN_OBJS))
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LIBVCHAN_LIBS = $(LDLIBS_libxenstore) $(LDLIBS_libxenctrl) $(LDLIBS_libxenevtchn)
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$(LIBVCHAN_OBJS) $(LIBVCHAN_PIC_OBJS): CFLAGS += $(CFLAGS_libxenstore) $(CFLAGS_libxenctrl) $(CFLAGS_libxenevtchn)
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$(NODE_OBJS) $(NODE2_OBJS): CFLAGS += $(CFLAGS_libxenctrl) $(CFLAGS_libxenevtchn)
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MAJOR = 1.0
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MINOR = 0
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CFLAGS += -I../include -I.
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.PHONY: all
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all: libxenvchan.so vchan-node1 vchan-node2 libxenvchan.a
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libxenvchan.so: libxenvchan.so.$(MAJOR)
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ln -sf $< $@
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libxenvchan.so.$(MAJOR): libxenvchan.so.$(MAJOR).$(MINOR)
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ln -sf $< $@
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libxenvchan.so.$(MAJOR).$(MINOR): $(LIBVCHAN_PIC_OBJS)
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$(CC) $(LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenvchan.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(LIBVCHAN_LIBS) $(APPEND_LDFLAGS)
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libxenvchan.a: $(LIBVCHAN_OBJS)
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$(AR) rcs libxenvchan.a $^
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vchan-node1: $(NODE_OBJS) libxenvchan.so
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$(CC) $(LDFLAGS) -o $@ $(NODE_OBJS) $(LDLIBS_libxenvchan) $(APPEND_LDFLAGS)
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vchan-node2: $(NODE2_OBJS) libxenvchan.so
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$(CC) $(LDFLAGS) -o $@ $(NODE2_OBJS) $(LDLIBS_libxenvchan) $(APPEND_LDFLAGS)
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.PHONY: install
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install: all
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$(INSTALL_DIR) $(DESTDIR)$(libdir)
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$(INSTALL_DIR) $(DESTDIR)$(includedir)
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$(INSTALL_PROG) libxenvchan.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)
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ln -sf libxenvchan.so.$(MAJOR).$(MINOR) $(DESTDIR)$(libdir)/libxenvchan.so.$(MAJOR)
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ln -sf libxenvchan.so.$(MAJOR) $(DESTDIR)$(libdir)/libxenvchan.so
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$(INSTALL_DATA) libxenvchan.h $(DESTDIR)$(includedir)
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$(INSTALL_DATA) libxenvchan.a $(DESTDIR)$(libdir)
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.PHONY: clean
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clean:
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$(RM) -f *.o *.opic *.so* *.a vchan-node1 vchan-node2 $(DEPS)
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distclean: clean
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-include $(DEPS)
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