From 795d506a10a06e05380ff275f31c588ca1e2cee8 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Mon, 16 Nov 2009 15:27:50 -0500 Subject: [PATCH] Support sparcv9 32-bit build From: David Miller Subject: Re: [ltt-dev] Sparc64 support added to Userspace RCU From: Mathieu Desnoyers 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: "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 sparc64. 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. Signed-off-by: Mathieu Desnoyers CC: David Miller --- README | 5 ++++- urcu/uatomic_arch_sparc64.h | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/README b/README index 883b808..ca23d43 100644 --- a/README +++ b/README @@ -18,11 +18,14 @@ BUILDING Forcing a 32-bit build with 386 backward compatibility: * CFLAGS="-m32 -g -O2" ./configure --host=i386-pc-linux-gnu + Forcing a 32-bit build for Sparcv9 (typical for Sparc v9) + * CFLAGS="-m32 -Wa,-Av9a -g -O2" ./configure + ARCHITECTURES SUPPORTED ----------------------- Currently, x86 (i386, i486, i586, i686), x86 64-bit, PowerPC 32/64, S390, S390x -and Sparc64 are supported. Only tested on Linux so far, but should +and Sparcv9 32/64 are supported. Only tested on Linux so far, but should theoretically work on other operating systems. QUICK START GUIDE diff --git a/urcu/uatomic_arch_sparc64.h b/urcu/uatomic_arch_sparc64.h index 35b9ac2..28829d2 100644 --- a/urcu/uatomic_arch_sparc64.h +++ b/urcu/uatomic_arch_sparc64.h @@ -24,7 +24,7 @@ #include #ifndef __SIZEOF_LONG__ -#if (defined(__sparc_v8__) || defined(__sparc_v9__)) +#ifdef __LP64__ #define __SIZEOF_LONG__ 8 #else #define __SIZEOF_LONG__ 4 -- 2.34.1