openjdk-8: fix musl build

Add various patches to make it work in musl. Some of them are generic
enough to be applied for all builds, some need to be specific to musl.

Signed-off-by: André Draszik <andre.draszik@jci.com>
Signed-off-by: Maxin B. John <maxin.john@intel.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/recipes-core/openjdk/patches-openjdk-8/musl-0007-hotspot-os_linux_x86-remove-glibc-dependencies-fpu_c.patch b/recipes-core/openjdk/patches-openjdk-8/musl-0007-hotspot-os_linux_x86-remove-glibc-dependencies-fpu_c.patch
new file mode 100644
index 0000000..fcad102
--- /dev/null
+++ b/recipes-core/openjdk/patches-openjdk-8/musl-0007-hotspot-os_linux_x86-remove-glibc-dependencies-fpu_c.patch
@@ -0,0 +1,46 @@
+From dc0217d20e3c96203c81acda1c02652755bfcefb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andr=C3=A9=20Draszik?= <andre.draszik at jci.com <https://lists.yoctoproject.org/listinfo/yocto>>
+Date: Fri, 2 Mar 2018 10:24:11 +0000
+Subject: [PATCH 7/9] hotspot: os_linux_x86: remove glibc dependencies
+ (fpu_control.h)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+musl doesn't provide fpu_control.h, open-code the relevant
+bits instead.
+
+Patch adopted from Alpine linux:
+    https://git.alpinelinux.org/cgit/aports/tree/community/openjdk8/icedtea-hotspot-musl.patch?id=4d34f29dddd3934358df7a9607706d09ae0433c3
+
+Upstream-Status: Inappropriate [musl specific]
+Signed-off-by: André Draszik <andre.draszik at jci.com <https://lists.yoctoproject.org/listinfo/yocto>>
+---
+ hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp b/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
+index fb96738a..982ce84d 100644
+--- a/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
++++ b/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
+@@ -72,7 +72,6 @@
+ # include <pwd.h>
+ # include <poll.h>
+ # include <ucontext.h>
+-# include <fpu_control.h>
+ 
+ #ifdef AMD64
+ #define REG_SP REG_RSP
+@@ -543,6 +542,9 @@ JVM_handle_linux_signal(int sig,
+   ShouldNotReachHere();
+ }
+ 
++#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
++#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))
++
+ void os::Linux::init_thread_fpu_state(void) {
+ #ifndef AMD64
+   // set fpu to 53 bit precision
+-- 
+2.16.2
+