Bug#870403: openjdk-9: Please include patch to fix atomic_copy64 on powerpc
Source: openjdk-9
Version: 9~b179-2
Severity: normal
Tags: patch
User: debian-powerpc@lists.debian.org
Usertags: powerpc
Hi!
As discussed in #868255 [1], the Zero build on powerpc fails
because of a bug in atomic_copy64(). This was discovered by
Andrew Haley who has also provided a patch to fix the issue.
I have added the patch to the current package and successfully
built openjdk-9 with debug-level set to "release".
When including the patch, please make sure it is applied after
the patch "hotspot-powerpcspe.diff" as both patches modify
code in the same region.
Please continue to keep #868255 open as the build on m68k still
requires the debug-level to be set at "slowdebug".
Thanks,
Adrian
> [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868255
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
--- openjdk/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp 2017-08-01 17:40:06.039530227 +0300
+++ openjdk/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp 2017-08-01 17:41:51.269236959 +0300
@@ -38,10 +38,10 @@
static void atomic_copy64(volatile void *src, volatile void *dst) {
#if defined(PPC32) && !defined(__NO_FPRS__)
double tmp;
- asm volatile ("lfd %0, 0(%1)\n"
- "stfd %0, 0(%2)\n"
- : "=f"(tmp)
- : "b"(src), "b"(dst));
+ asm volatile ("lfd %0, %2\n"
+ "stfd %0, %1\n"
+ : "=&f"(tmp), "=Q"(*(volatile double*)dst)
+ : "Q"(*(volatile double*)src));
#elif defined(S390) && !defined(_LP64)
double tmp;
asm volatile ("ld %0, 0(%1)\n"
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