gc_locks.h (GC_test_and_set): Support Linux/mips.

	* include/private/gc_locks.h (GC_test_and_set): Support
	Linux/mips.
	(GC_TEST_AND_SET_DEFINED): Likewise.

	* include/private/gcconfig.h (DYNAMIC_LOADING): Defined for
	Linux/mips.
	(DATAEND): Likewise.
	(LINUX_STACKBOTTOM): Likewise.
	(STACKBOTTOM): Removed for Linux/mips.

From-SVN: r54444

boehm-gc/ChangeLog

+2002-06-09  H.J. Lu  (hjl@gnu.org)
+
+	* include/private/gc_locks.h (GC_test_and_set): Support
+	Linux/mips.
+	(GC_TEST_AND_SET_DEFINED): Likewise.
+
+	* include/private/gcconfig.h (DYNAMIC_LOADING): Defined for
+	Linux/mips.
+	(DATAEND): Likewise.
+	(LINUX_STACKBOTTOM): Likewise.
+	(STACKBOTTOM): Removed for Linux/mips.
+
 Sun May 19 11:32:03 2002  Mark P Mitchell  <mark@codesourcery.com>
 
 	* irix_threads.cc (GC_pthread_detach): Do not use REAL_FUNC.

boehm-gc/include/private/gc_locks.h

@@ -219,7 +219,11 @@
 #    define GC_TEST_AND_SET_DEFINED
 #  endif
 #  ifdef MIPS
-#    if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64)) \
+#    ifdef LINUX
+#      include <sys/tas.h>
+#      define GC_test_and_set(addr) _test_and_set((int *) addr,1)
+#      define GC_TEST_AND_SET_DEFINED
+#    elif __mips < 3 || !(defined (_ABIN32) || defined(_ABI64)) \
 	|| !defined(_COMPILER_VERSION) || _COMPILER_VERSION < 700
 #        define GC_test_and_set(addr) test_and_set(addr, 1)
 #    else

boehm-gc/include/private/gcconfig.h

@@ -1141,15 +1141,14 @@
       /* This was developed for a linuxce style platform.  Probably	*/
       /* needs to be tweaked for workstation class machines.		*/
 #     define OS_TYPE "LINUX"
+#     define DYNAMIC_LOADING
+      extern int _end[];
+#     define DATAEND (_end)
       extern int __data_start[];
 #     define DATASTART ((ptr_t)(__data_start))
 #     define ALIGNMENT 4
 #     define USE_GENERIC_PUSH_REGS
-#     define STACKBOTTOM ((ptr_t)0x7fff8000)
-        /* Older toolchains may need 0x80000000.	*/
-	/* In many cases, this should probably use LINUX_STACKBOTTOM 	*/
-	/* instead. But some kernel versions seem to give the wrong	*/
-	/* value from /proc.						*/
+#     define LINUX_STACKBOTTOM
 #   endif /* Linux */
 #   ifdef EWS4800
 #      define HEURISTIC2