Commit 9b4ade22 authored by Juergen Gross's avatar Juergen Gross Committed by David Vrabel

xen: build infrastructure for generating hypercall depending symbols

Today there are several places in the kernel which build tables
containing one entry for each possible Xen hypercall. Create an
infrastructure to be able to generate these tables at build time.
Based-on-patch-by: default avatarJan Beulich <jbeulich@suse.com>
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
Acked-by: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
parent b6a473a7
......@@ -19,6 +19,9 @@ quiet_cmd_syshdr = SYSHDR $@
quiet_cmd_systbl = SYSTBL $@
cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
quiet_cmd_hypercalls = HYPERCALLS $@
cmd_hypercalls = $(CONFIG_SHELL) '$<' $@ $(filter-out $<,$^)
syshdr_abi_unistd_32 := i386
$(uapi)/unistd_32.h: $(syscall32) $(syshdr)
$(call if_changed,syshdr)
......@@ -47,10 +50,16 @@ $(out)/syscalls_32.h: $(syscall32) $(systbl)
$(out)/syscalls_64.h: $(syscall64) $(systbl)
$(call if_changed,systbl)
$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh
$(call if_changed,hypercalls)
$(out)/xen-hypercalls.h: $(srctree)/include/xen/interface/xen*.h
uapisyshdr-y += unistd_32.h unistd_64.h unistd_x32.h
syshdr-y += syscalls_32.h
syshdr-$(CONFIG_X86_64) += unistd_32_ia32.h unistd_64_x32.h
syshdr-$(CONFIG_X86_64) += syscalls_64.h
syshdr-$(CONFIG_XEN) += xen-hypercalls.h
targets += $(uapisyshdr-y) $(syshdr-y)
......
#!/bin/sh
out="$1"
shift
in="$@"
for i in $in; do
eval $CPP $LINUXINCLUDE -dD -imacros "$i" -x c /dev/null
done | \
awk '$1 == "#define" && $2 ~ /__HYPERVISOR_[a-z][a-z_0-9]*/ { v[$3] = $2 }
END { print "/* auto-generated by scripts/xen-hypercall.sh */"
for (i in v) if (!(v[i] in v))
print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out
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