From 9b4ade226f7468bb26f98b6cd01cb5b8a05fc96d Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Wed, 21 Jan 2015 08:49:22 +0100 Subject: [PATCH] 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: Jan Beulich Signed-off-by: Juergen Gross Reviewed-by: David Vrabel Acked-by: Ingo Molnar Signed-off-by: David Vrabel --- arch/x86/syscalls/Makefile | 9 +++++++++ scripts/xen-hypercalls.sh | 12 ++++++++++++ 2 files changed, 21 insertions(+) create mode 100644 scripts/xen-hypercalls.sh diff --git a/arch/x86/syscalls/Makefile b/arch/x86/syscalls/Makefile index 3323c2745248..a55abb9f6c5e 100644 --- a/arch/x86/syscalls/Makefile +++ b/arch/x86/syscalls/Makefile @@ -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) diff --git a/scripts/xen-hypercalls.sh b/scripts/xen-hypercalls.sh new file mode 100644 index 000000000000..676d9226814f --- /dev/null +++ b/scripts/xen-hypercalls.sh @@ -0,0 +1,12 @@ +#!/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 -- 2.20.1