From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cantor2.suse.de ([195.135.220.15]:42384 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750999AbaLQJup (ORCPT ); Wed, 17 Dec 2014 04:50:45 -0500 From: Juergen Gross Subject: [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Date: Wed, 17 Dec 2014 10:50:35 +0100 Message-Id: <1418809838-14123-2-git-send-email-jgross@suse.com> In-Reply-To: <1418809838-14123-1-git-send-email-jgross@suse.com> References: <1418809838-14123-1-git-send-email-jgross@suse.com> Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org, x86@kernel.org, xen-devel@lists.xensource.com, konrad.wilk@oracle.com, david.vrabel@citrix.com, boris.ostrovsky@oracle.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, mmarek@suse.cz, linux-kbuild@vger.kernel.org Cc: Juergen Gross 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 --- 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 3323c27..a55abb9 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 0000000..676d922 --- /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 -- 2.1.2