[ltt-dev] Sparc64 support added to Userspace RCU
davem at davemloft.net
Sun Nov 15 23:31:38 EST 2009
From: Mathieu Desnoyers <mathieu.desnoyers at polymtl.ca>
Date: Thu, 22 Oct 2009 15:57:53 -0400
> Feedback is welcome,
__sparc_v8__ does not mean 64-bit longs or pointers as implied here:
#if (defined(__sparc_v8__) || defined(__sparc_v9__))
#define __SIZEOF_LONG__ 8
#define __SIZEOF_LONG__ 4
"v8" was the last 32-bit standard of the cpu architecture.
Otherwise looks fine.
Although this port won't be very useful until it can be built in
32-bit mode. As most applications on sparc64 systems are still
32-bit. Like on powerpc, people only rarely build things 64-bit on
You need to build with "-Wa,-Av9a" on the GCC command line for that
case so that the assembler allows the v9 instructions emitted by your
macros, even when building for 32-bit.
Hope this helps.
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