X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fmips-arch.h;h=eba16e4f6317eab81f991ed15db105249e78fb22;hb=d4d6c4b16a3655ce99a87d43f411391363531260;hp=17c18863012757ee1522511c84aa3dbd51df1a91;hpb=4ae1b794a5d6a90794468cf8017f5307f2c30dfe;p=sbcl.git

diff --git a/src/runtime/mips-arch.h b/src/runtime/mips-arch.h
index 17c1886..eba16e4 100644
--- a/src/runtime/mips-arch.h
+++ b/src/runtime/mips-arch.h
@@ -1,4 +1,47 @@
 #ifndef _MIPS_ARCH_H
 #define _MIPS_ARCH_H
 
+
+static inline void
+get_spinlock(volatile lispobj *word, long value)
+{
+#ifdef LISP_FEATURE_SB_THREAD
+    unsigned long __old = (volatile lispobj)*word;
+    unsigned long __prev;
+    int __cmp;
+
+    __asm__ __volatile__ (
+        "       .set push\n"
+        "       .set mips2\n"
+        "       .set noreorder\n"
+        "1:     ll      %[__prev],%[__mem]\n"
+        "       bne     %[__prev],%[__old],2f\n"
+        "        li     %[__cmp],0\n"
+        "       move    %[__cmp],%[__new]\n"
+        "       sc      %[__cmp],%[__mem]\n"
+        "       beqz    %[__cmp],1b\n"
+        "        nop\n"
+        "       sync\n"
+        "2:\n"
+        "       .set pop"
+        : [__prev] "=&r" (__prev),
+          [__cmp] "=&r" (__cmp)
+        : [__mem] "R" (*word),
+          [__old] "r" (__old),
+          [__new] "r" (value)
+        : "memory");
+
+    if (!cmp)
+        lose("recursive get_spinlock: 0x%x,%d\n", word, value);
+#else /* LISP_FEATURE_SB_THREAD */
+    *word=value;
+#endif
+}
+
+static inline void
+release_spinlock(volatile lispobj *word)
+{
+    *word=0;
+}
+
 #endif /* _MIPS_ARCH_H */