From a46b43493154bf3c59ce634ee9557a0b273de5ce Mon Sep 17 00:00:00 2001
From: Aram Hăvărneanu <aram@mgk.ro>
Date: Fri, 17 Jan 2014 17:58:10 +1300
Subject: runtime: add support for GOOS=solaris

R=alex.brainman, dave, jsing, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/35990043
---
 src/pkg/runtime/lfstack.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'src/pkg/runtime/lfstack.c')

diff --git a/src/pkg/runtime/lfstack.c b/src/pkg/runtime/lfstack.c
index 140384d3dc..e94f360c24 100644
--- a/src/pkg/runtime/lfstack.c
+++ b/src/pkg/runtime/lfstack.c
@@ -17,6 +17,20 @@
 #define PTR_MASK ((1ull<<PTR_BITS)-1)
 #define CNT_MASK (0ull-1)
 
+#ifdef _64BIT
+#ifdef GOOS_solaris
+// SPARC64 and Solaris on AMD64 uses all 64 bits of virtual addresses.
+// Use low-order three bits as ABA counter.
+// http://docs.oracle.com/cd/E19120-01/open.solaris/816-5138/6mba6ua5p/index.html
+#undef PTR_BITS
+#undef CNT_MASK
+#undef PTR_MASK
+#define PTR_BITS 0
+#define CNT_MASK 7
+#define PTR_MASK ((0ull-1)<<3)
+#endif
+#endif
+
 void
 runtime·lfstackpush(uint64 *head, LFNode *node)
 {
-- 
cgit v1.3-5-g9baa