3 files changed, 190 insertions, 0 deletions
diff --git a/lib/isc/x86_64/include/Makefile.in b/lib/isc/x86_64/include/Makefile.in
new file mode 100644
index 0000000..d33c0fc
--- /dev/null
+++ b/lib/isc/x86_64/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/x86_64/include/isc/Makefile.in b/lib/isc/x86_64/include/isc/Makefile.in
new file mode 100644
index 0000000..97b6b41
--- /dev/null
+++ b/lib/isc/x86_64/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/x86_64/include/isc/atomic.h b/lib/isc/x86_64/include/isc/atomic.h
new file mode 100644
index 0000000..b2d7880
--- /dev/null
+++ b/lib/isc/x86_64/include/isc/atomic.h
@@ -0,0 +1,139 @@
+/*
+ * 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
+
+/* We share the gcc-version with x86_32 */
+#error "impossible case.  check build configuration"
+
+#elif defined(ISC_PLATFORM_USESTDASM)
+/*
+ * The followings are "generic" assembly code which implements the same
+ * functionality in case the gcc extension cannot be used.  It should be
+ * better to avoid inlining below, since we directly refer to specific
+ * registers for arguments, which would not actually correspond to the
+ * intended address or value in the embedded mnemonic.
+ */
+
+static int32_t
+isc_atomic_xadd(int32_t *p, int32_t val) {
+	(void)(p);
+	(void)(val);
+
+	__asm (
+		"movq %rdi, %rdx\n"
+		"movl %esi, %eax\n"
+#ifdef ISC_PLATFORM_USETHREADS
+		"lock;"
+#endif
+		"xadd %eax, (%rdx)\n"
+		/*
+		 * XXX: assume %eax will be used as the return value.
+		 */
+		);
+}
+
+#ifdef ISC_PLATFORM_HAVEXADDQ
+static int64_t
+isc_atomic_xaddq(int64_t *p, int64_t val) {
+	(void)(p);
+	(void)(val);
+
+	__asm (
+		"movq %rdi, %rdx\n"
+		"movq %rsi, %rax\n"
+#ifdef ISC_PLATFORM_USETHREADS
+		"lock;"
+#endif
+		"xaddq %rax, (%rdx)\n"
+		/*
+		 * XXX: assume %rax will be used as the return value.
+		 */
+		);
+}
+#endif
+
+static void
+isc_atomic_store(int32_t *p, int32_t val) {
+	(void)(p);
+	(void)(val);
+
+	__asm (
+		"movq %rdi, %rax\n"
+		"movl %esi, %edx\n"
+#ifdef ISC_PLATFORM_USETHREADS
+		"lock;"
+#endif
+		"xchgl (%rax), %edx\n"
+		);
+}
+
+#ifdef ISC_PLATFORM_HAVEATOMICSTOREQ
+static void
+isc_atomic_storeq(int64_t *p, int64_t val) {
+	(void)(p);
+	(void)(val);
+
+	__asm (
+		"movq %rdi, %rax\n"
+		"movq %rsi, %rdx\n"
+#ifdef ISC_PLATFORM_USETHREADS
+		"lock;"
+#endif
+		"xchgq (%rax), %rdx\n"
+		);
+}
+#endif
+
+static int32_t
+isc_atomic_cmpxchg(int32_t *p, int32_t cmpval, int32_t val) {
+	(void)(p);
+	(void)(cmpval);
+	(void)(val);
+
+	__asm (
+		/*
+		 * p is %rdi, cmpval is %esi, val is %edx.
+		 */
+		"movl %edx, %ecx\n"
+		"movl %esi, %eax\n"
+		"movq %rdi, %rdx\n"
+
+#ifdef ISC_PLATFORM_USETHREADS
+		"lock;"
+#endif
+		/*
+		 * If [%rdi] == %eax then [%rdi] := %ecx (equal to %edx
+		 * from above), and %eax is untouched (equal to %esi)
+		 * from above.
+		 *
+		 * Else if [%rdi] != %eax then [%rdi] := [%rdi]
+		 * (rewritten in write cycle) and %eax := [%rdi].
+		 */
+		"cmpxchgl %ecx, (%rdx)"
+		);
+}
+
+#else /* !ISC_PLATFORM_USEGCCASM && !ISC_PLATFORM_USESTDASM */
+
+#error "unsupported compiler.  disable atomic ops by --disable-atomic"
+
+#endif
+#endif /* ISC_ATOMIC_H */