Blame 8186461-pr3557.patch
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# HG changeset patch
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# User glaubitz
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# Date 1524889690 -3600
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# Sat Apr 28 05:28:10 2018 +0100
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# Node ID be1379a186ba527b32c93a83e04c9600735fe44b
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# Parent 91ab2eac9856ec86c16c0bedd32e0b87974ead6f
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8186461, PR3557: Zero's atomic_copy64() should use SPE instructions on linux-powerpcspe
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Reviewed-by: aph
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diff --git openjdk.orig/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp openjdk/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp
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--- openjdk.orig/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp
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+++ openjdk/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.hpp
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@@ -36,12 +36,18 @@
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// Atomically copy 64 bits of data
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static void atomic_copy64(volatile void *src, volatile void *dst) {
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-#if defined(PPC32)
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+#if defined(PPC32) && !defined(__SPE__)
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double tmp;
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asm volatile ("lfd %0, %2\n"
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"stfd %0, %1\n"
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: "=&f"(tmp), "=Q"(*(volatile double*)dst)
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: "Q"(*(volatile double*)src));
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+#elif defined(PPC32) && defined(__SPE__)
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+ long tmp;
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+ asm volatile ("evldd %0, %2\n"
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+ "evstdd %0, %1\n"
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+ : "=&r"(tmp), "=Q"(*(volatile long*)dst)
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+ : "Q"(*(volatile long*)src));
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#elif defined(S390) && !defined(_LP64)
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double tmp;
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asm volatile ("ld %0, 0(%1)\n"
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