3 files changed, 141 insertions, 0 deletions
diff --git a/lib/isc/mips/include/Makefile.in b/lib/isc/mips/include/Makefile.in
new file mode 100644
index 0000000..d33c0fc
--- /dev/null
+++ b/lib/isc/mips/include/Makefile.in
@@ -0,0 +1,17 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+SUBDIRS =	isc
+TARGETS =
+
+@BIND9_MAKE_RULES@
diff --git a/lib/isc/mips/include/isc/Makefile.in b/lib/isc/mips/include/isc/Makefile.in
new file mode 100644
index 0000000..97b6b41
--- /dev/null
+++ b/lib/isc/mips/include/isc/Makefile.in
@@ -0,0 +1,34 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+VERSION=@BIND9_VERSION@
+
+HEADERS =	atomic.h
+
+SUBDIRS =
+TARGETS =
+
+@BIND9_MAKE_RULES@
+
+installdirs:
+	$(SHELL) ${top_srcdir}/mkinstalldirs ${DESTDIR}${includedir}/isc
+
+install:: installdirs
+	for i in ${HEADERS}; do \
+		${INSTALL_DATA} $(srcdir)/$$i ${DESTDIR}${includedir}/isc || exit 1; \
+	done
+
+uninstall::
+	for i in ${HEADERS}; do \
+		rm -f ${DESTDIR}${includedir}/isc/$$i || exit 1; \
+	done
diff --git a/lib/isc/mips/include/isc/atomic.h b/lib/isc/mips/include/isc/atomic.h
new file mode 100644
index 0000000..caba82f
--- /dev/null
+++ b/lib/isc/mips/include/isc/atomic.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+#ifndef ISC_ATOMIC_H
+#define ISC_ATOMIC_H 1
+
+#include <inttypes.h>
+
+#include <isc/platform.h>
+#include <isc/types.h>
+
+#ifdef ISC_PLATFORM_USEGCCASM
+/*
+ * This routine atomically increments the value stored in 'p' by 'val', and
+ * returns the previous value.
+ */
+static inline int32_t
+isc_atomic_xadd(int32_t *p, int val) {
+	int32_t orig;
+
+	__asm__ __volatile__ (
+	"	.set	push		\n"
+	"	.set	mips2		\n"
+	"	.set	noreorder	\n"
+	"	.set	noat		\n"
+	"1:	ll	$1, %1		\n"
+	"	addu	%0, $1, %2	\n"
+	"	sc	%0, %1		\n"
+	"	beqz	%0, 1b		\n"
+	"	move	%0, $1		\n"
+	"	.set	pop		\n"
+	: "=&r" (orig), "+R" (*p)
+	: "r" (val)
+	: "memory");
+
+	return (orig);
+}
+
+/*
+ * This routine atomically stores the value 'val' in 'p'.
+ */
+static inline void
+isc_atomic_store(int32_t *p, int32_t val) {
+	*p = val;
+}
+
+/*
+ * This routine atomically replaces the value in 'p' with 'val', if the
+ * original value is equal to 'cmpval'.  The original value is returned in any
+ * case.
+ */
+static inline int32_t
+isc_atomic_cmpxchg(int32_t *p, int cmpval, int val) {
+	int32_t orig;
+	int32_t tmp;
+
+	__asm__ __volatile__ (
+	"	.set	push		\n"
+	"	.set	mips2		\n"
+	"	.set	noreorder	\n"
+	"	.set	noat		\n"
+	"1:	ll	$1, %1		\n"
+	"	bne	$1, %3, 2f	\n"
+	"	move	%2, %4		\n"
+	"	sc	%2, %1		\n"
+	"	beqz	%2, 1b		\n"
+	"2:	move	%0, $1		\n"
+	"	.set	pop		\n"
+	: "=&r"(orig), "+R" (*p), "=r" (tmp)
+	: "r"(cmpval), "r"(val)
+	: "memory");
+
+	return (orig);
+}
+
+#else /* !ISC_PLATFORM_USEGCCASM */
+
+#error "unsupported compiler.  disable atomic ops by --disable-atomic"
+
+#endif
+#endif /* ISC_ATOMIC_H */