main/xen: upgrade to 4.11.1 and fix build with gcc8

main/xen/APKBUILD

@@ -2,8 +2,8 @@
 # Contributor: Roger Pau Monne <roger.pau@entel.upc.edu>
 # Maintainer: William Pitcock <nenolod@dereferenced.org>
 pkgname=xen
-pkgver=4.11.0
-pkgrel=1
+pkgver=4.11.1
+pkgrel=0
 pkgdesc="Xen hypervisor"
 url="https://www.xenproject.org/"
 arch="x86_64 armhf aarch64" # enable armv7 when builds with gcc8
@@ -159,7 +159,7 @@ _POLARSSL_VERSION="1.1.4"
 _TPMEMU_VERSION="0.7.4"
 
 # grep ^IPXE_GIT_TAG tools/firmware/etherboot/Makefile
-_IPXE_GIT_TAG=356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d
+_IPXE_GIT_TAG=d2063b7693e0e35db97b2264aa987eb6341ae779
 
 source="https://downloads.xenproject.org/release/$pkgname/$pkgver/$pkgname-$pkgver.tar.gz
 	https://xenbits.xen.org/xen-extfiles/gmp-$_GMP_VERSION.tar.bz2
@@ -172,6 +172,9 @@ source="https://downloads.xenproject.org/release/$pkgname/$pkgver/$pkgname-$pkgv
 	https://xenbits.xen.org/xen-extfiles/zlib-$_ZLIB_VERSION.tar.gz
 	https://xenbits.xen.org/xen-extfiles/ipxe-git-$_IPXE_GIT_TAG.tar.gz
 
+	fuzz-test-x86_emulator_disable_sse_before_including_always_inline.patch
+	tools-update-ipxe-changeset.patch
+	mini-os-__divmoddi4.patch
 	qemu-xen_paths.patch
 
 	hotplug-vif-vtrill.patch
@@ -422,7 +425,7 @@ EOF
 
 }
 
-sha512sums="33d431c194f10d5ee767558404a1f80a66b3df019012b0bbd587fcbc9524e1bba7ea04269020ce891fe9d211d2f81c63bf78abedcdbe1595aee26251c803a50a  xen-4.11.0.tar.gz
+sha512sums="c1655c5decdaed95a2b9a99652318cfc72f6cfdae957cfe60d635f7787e8850f33e8fafc4c4b8d61fb579c9b9d93028a6382903e71808a0418b931e76d72a649  xen-4.11.1.tar.gz
 2e0b0fd23e6f10742a5517981e5171c6e88b0a93c83da701b296f5c0861d72c19782daab589a7eac3f9032152a0fc7eff7f5362db8fccc4859564a9aa82329cf  gmp-4.3.2.tar.bz2
 c2bc9ffc8583aeae71cee9ddcc4418969768d4e3764d47307da54f93981c0109fb07d84b061b3a3628bd00ba4d14a54742bc04848110eb3ae8ca25dbfbaabadb  grub-0.97.tar.gz
 1465b58279af1647f909450e394fe002ca165f0ff4a0254bfa9fe0e64316f50facdde2729d79a4e632565b4500cf4d6c74192ac0dd3bc9fe09129bbd67ba089d  lwip-1.3.0.tar.gz
@@ -431,7 +434,10 @@ c2bc9ffc8583aeae71cee9ddcc4418969768d4e3764d47307da54f93981c0109fb07d84b061b3a36
 88da614e4d3f4409c4fd3bb3e44c7587ba051e3fed4e33d526069a67e8180212e1ea22da984656f50e290049f60ddca65383e5983c0f8884f648d71f698303ad  polarssl-1.1.4-gpl.tgz
 4928b5b82f57645be9408362706ff2c4d9baa635b21b0d41b1c82930e8c60a759b1ea4fa74d7e6c7cae1b7692d006aa5cb72df0c3b88bf049779aa2b566f9d35  tpm_emulator-0.7.4.tar.gz
 021b958fcd0d346c4ba761bcf0cc40f3522de6186cf5a0a6ea34a70504ce9622b1c2626fce40675bc8282cf5f5ade18473656abc38050f72f5d6480507a2106e  zlib-1.2.3.tar.gz
-bbcce5e55040e7e29adebd4a5253a046016a6e2e7ff34cf801a42d147e1ec1af57e0297318249bfa9c5bbeac969fe4b37c18cbf845a80b2136d65387a4fc31da  ipxe-git-356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d.tar.gz
+2b4ae8e65cd678dbb376f24001294eb54aead8d66456e06fc270dec178d90b282c1eb19731234d8b458054e49c5b8b8c4a89345c63ed0a4dafaf205e642b00b7  ipxe-git-d2063b7693e0e35db97b2264aa987eb6341ae779.tar.gz
+2d5a2fa1eec7f666db1b1748570076c252bf03023f354b46c12d9acfc796778f0bdb6ee2fe57ffd4b617283ae53005372c65d2762b759dd3749567dc6a0621dd  fuzz-test-x86_emulator_disable_sse_before_including_always_inline.patch
+df51f4d90b9ff0bf52506270ca9acfb51320de45a64714d03adf8f370ab070a5d9e458f21c93cac563d3d046afddd732c33252a6a1c7423093ec29843cf50255  tools-update-ipxe-changeset.patch
+b9c754220187955d01ffbb6e030dace9d9aaae755db1765d07e407858c71a2cb0de04e0ab2099cd121d9e1bc1978af06c7dbd2fd805e06eca12ac5d527f15a52  mini-os-__divmoddi4.patch
 1936ab39a1867957fa640eb81c4070214ca4856a2743ba7e49c0cd017917071a9680d015f002c57fa7b9600dbadd29dcea5887f50e6c133305df2669a7a933f3  qemu-xen_paths.patch
 f095ea373f36381491ad36f0662fb4f53665031973721256b23166e596318581da7cbb0146d0beb2446729adfdb321e01468e377793f6563a67d68b8b0f7ffe3  hotplug-vif-vtrill.patch
 77b08e9655e091b0352e4630d520b54c6ca6d659d1d38fbb4b3bfc9ff3e66db433a2e194ead32bb10ff962c382d800a670e82b7a62835b238e294b22808290ea  musl-hvmloader-fix-stdint.patch

main/xen/fuzz-test-x86_emulator_disable_sse_before_including_always_inline.patch

+From e8dfbc2962365ffa3d7ddcacaa5baaf4ed24b2af Mon Sep 17 00:00:00 2001
+From: Christopher Clark <christopher.clark6@baesystems.com>
+Date: Tue, 25 Sep 2018 16:30:32 +0200
+Subject: [PATCH] fuzz, test x86_emulator: disable sse before including
+ always_inline fns
+
+Workaround for compiler rejection of SSE-using always_inlines defined before
+SSE is disabled.
+
+Compiling with _FORTIFY_SOURCE or higher levels of optimization enabled
+will always_inline several library fns (memset, memcpy, ...)
+(with gcc 8.2.0 and glibc 2.28).
+
+In fuzz and x86_emulator test, the compiler is instructed not
+to generate SSE instructions via: #pragma GCC target("no-sse")
+because those registers are needed for use by the workload.
+
+The combination above causes compilation failure as the inline functions
+use those instructions. This is resolved by reordering the inclusion of
+<stdio.h> and <string.h> to after the pragma disabling SSE generation.
+
+It would be preferable to locate the no-sse pragma within x86-emulate.h at the
+top of the file, prior to including any other headers; unfortunately doing so
+before <stdlib.h> causes compilation failure due to declaration of 'atof' with:
+  "SSE register return with SSE disabled".
+Fortunately there is no (known) current dependency on any always_inline
+SSE-inclined function declared in <stdlib.h> or any of its dependencies, so the
+pragma is therefore issued immediately after inclusion of <stdlib.h> with a
+comment introduced to explain its location there.
+
+Add compile-time checks for unwanted prior inclusion of <string.h> and
+<stdio.h>, which are the two headers that provide the library functions that
+are handled with wrappers and listed within "x86-emulate.h" as ones "we think
+might access any of the FPU state".
+* Use standard-defined "EOF" macro to detect prior <stdio.h> inclusion.
+* Use "_STRING_H" (non-standardized guard macro) as best-effort
+  for detection of prior <string.h> inclusion. This is non-universally
+  viable but will provide error output on common GLIBC systems, so
+  provides some defensive coverage.
+
+Adds conditional #include <stdio.h> to x86-emulate.h because fwrite, printf,
+etc. are referenced when WRAP has been defined.
+
+Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
+Reviewed-by: Jan Beulich <jbeulich@suse.com>
+---
+ .../fuzz/x86_instruction_emulator/fuzz-emul.c | 10 +++++--
+ tools/tests/x86_emulator/wrappers.c           |  1 -
+ tools/tests/x86_emulator/x86-emulate.h        | 28 +++++++++++++++++--
+ 3 files changed, 34 insertions(+), 5 deletions(-)
+
+diff --git a/tools/fuzz/x86_instruction_emulator/fuzz-emul.c b/tools/fuzz/x86_instruction_emulator/fuzz-emul.c
+index 03a2473cdb3..0ffd0fbfe1c 100644
+--- a/tools/fuzz/x86_instruction_emulator/fuzz-emul.c
++++ b/tools/fuzz/x86_instruction_emulator/fuzz-emul.c
+@@ -6,9 +6,7 @@
+ #include <stdbool.h>
+ #include <stddef.h>
+ #include <stdint.h>
+-#include <stdio.h>
+ #include <stdlib.h>
+-#include <string.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <sys/mman.h>
+@@ -16,6 +14,14 @@
+ #include <xen/xen.h>
+ 
+ #include "x86-emulate.h"
++/*
++ * include "x86-emulate.h" prior to <stdio.h> and <string.h>:
++ * x86-emulate.h disables use of SSE registers, while <stdio.h> and <string.h>
++ * declare functions that may be always_inline and use those registers
++ * unless they have been disabled earlier, which can fail to compile.
++ */
++#include <stdio.h>
++#include <string.h>
+ #include "fuzz-emul.h"
+ 
+ #define MSR_INDEX_MAX 16
+diff --git a/tools/tests/x86_emulator/wrappers.c b/tools/tests/x86_emulator/wrappers.c
+index d02013c4b1d..eba7cc93c51 100644
+--- a/tools/tests/x86_emulator/wrappers.c
++++ b/tools/tests/x86_emulator/wrappers.c
+@@ -1,5 +1,4 @@
+ #include <stdarg.h>
+-#include <stdio.h>
+ 
+ #define WRAP(x) typeof(x) emul_##x
+ #include "x86-emulate.h"
+diff --git a/tools/tests/x86_emulator/x86-emulate.h b/tools/tests/x86_emulator/x86-emulate.h
+index b249e4673c3..08dead32fd7 100644
+--- a/tools/tests/x86_emulator/x86-emulate.h
++++ b/tools/tests/x86_emulator/x86-emulate.h
+@@ -3,10 +3,34 @@
+ #include <stddef.h>
+ #include <stdint.h>
+ #include <stdlib.h>
++/*
++ * Use of sse registers must be disabled prior to the definition of
++ * always_inline functions that would use them (memcpy, memset, etc),
++ * so do this as early as possible, aiming to be before any always_inline
++ * functions that are used are declared.
++ * Unfortunately, this cannot be done prior to inclusion of <stdlib.h>
++ * due to functions such as 'atof' that have SSE register return declared,
++ * so do so here, immediately after that.
++ */
++#if __GNUC__ >= 6
++# pragma GCC target("no-sse")
++#endif
++ /*
++ * Attempt detection of unwanted prior inclusion of some headers known to use
++ * always_inline with SSE registers in some library / compiler / optimization
++ * combinations.
++ */
++#ifdef _STRING_H
++# error "Must not include <string.h> before x86-emulate.h"
++#endif
+ #include <string.h>
+ 
+-#if __GNUC__ >= 6
+-#pragma GCC target("no-sse")
++/* EOF is a standard macro defined in <stdio.h> so use it for detection */
++#ifdef EOF
++# error "Must not include <stdio.h> before x86-emulate.h"
++#endif
++#ifdef WRAP
++# include <stdio.h>
+ #endif
+ 
+ #include <xen/xen.h>

main/xen/mini-os-__divmoddi4.patch

+diff --git a/extras/mini-os/lib/math.c b/extras/mini-os/lib/math.c
+index b98cc1d..1b63a83 100644
+--- a/extras/mini-os/lib/math.c
++++ b/extras/mini-os/lib/math.c
+@@ -366,6 +366,14 @@ __divdi3(quad_t a, quad_t b)
+ 	return (neg ? -uq : uq);
+ }
+ 
++quad_t
++__divmoddi4(quad_t a, quad_t b, quad_t *r)
++{
++	quad_t d = __divdi3(a, b);
++	*r = a - (d * b);
++	return d;
++}
++
+ /*
+  * From
+  * udivdi3.c

main/xen/tools-update-ipxe-changeset.patch

+From 9bf0dc74377bb2813a794e8080acf869ed9e0dc1 Mon Sep 17 00:00:00 2001
+From: Wei Liu <wei.liu2@citrix.com>
+Date: Thu, 26 Jul 2018 15:58:53 +0100
+Subject: [PATCH] tools: update ipxe changeset
+
+This placates gcc 8.1. The commit comes from ipxe master branch as of
+July 25, 2018.
+
+Signed-off-by: Wei Liu <wei.liu2@citrix.com>
+Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
+---
+ tools/firmware/etherboot/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/firmware/etherboot/Makefile b/tools/firmware/etherboot/Makefile
+index 4de6d24a13e..3868f876ea3 100644
+--- a/tools/firmware/etherboot/Makefile
++++ b/tools/firmware/etherboot/Makefile
+@@ -10,7 +10,7 @@ else
+ IPXE_GIT_URL ?= git://git.ipxe.org/ipxe.git
+ endif
+ 
+-IPXE_GIT_TAG := 356f6c1b64d7a97746d1816cef8ca22bdd8d0b5d
++IPXE_GIT_TAG := d2063b7693e0e35db97b2264aa987eb6341ae779
+ 
+ IPXE_TARBALL_URL ?= $(XEN_EXTFILES_URL)/ipxe-git-$(IPXE_GIT_TAG).tar.gz
+