Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

1 files changed, 66 insertions, 0 deletions

diff --git a/target/openrisc/helper.h b/target/openrisc/helper.h
new file mode 100644
index 000000000..d847814a2
--- /dev/null
+++ b/target/openrisc/helper.h
@@ -0,0 +1,66 @@
+/*
+ * OpenRISC helper defines
+ *
+ * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* exception */
+DEF_HELPER_FLAGS_2(exception, TCG_CALL_NO_WG, void, env, i32)
+DEF_HELPER_FLAGS_1(ove_cy, TCG_CALL_NO_WG, void, env)
+DEF_HELPER_FLAGS_1(ove_ov, TCG_CALL_NO_WG, void, env)
+DEF_HELPER_FLAGS_1(ove_cyov, TCG_CALL_NO_WG, void, env)
+
+/* float */
+DEF_HELPER_FLAGS_1(update_fpcsr, TCG_CALL_NO_WG, void, env)
+
+DEF_HELPER_FLAGS_2(itofd, TCG_CALL_NO_RWG, i64, env, i64)
+DEF_HELPER_FLAGS_2(itofs, TCG_CALL_NO_RWG, i32, env, i32)
+DEF_HELPER_FLAGS_2(ftoid, TCG_CALL_NO_RWG, i64, env, i64)
+DEF_HELPER_FLAGS_2(ftois, TCG_CALL_NO_RWG, i32, env, i32)
+DEF_HELPER_FLAGS_2(stod, TCG_CALL_NO_RWG, i64, env, i32)
+DEF_HELPER_FLAGS_2(dtos, TCG_CALL_NO_RWG, i32, env, i64)
+
+DEF_HELPER_FLAGS_4(float_madd_s, TCG_CALL_NO_RWG, i32, env, i32, i32, i32)
+DEF_HELPER_FLAGS_4(float_madd_d, TCG_CALL_NO_RWG, i64, env, i64, i64, i64)
+
+#define FOP_CALC(op)                                            \
+DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, i32, env, i32, i32) \
+DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, i64, env, i64, i64)
+FOP_CALC(add)
+FOP_CALC(sub)
+FOP_CALC(mul)
+FOP_CALC(div)
+FOP_CALC(rem)
+#undef FOP_CALC
+
+#define FOP_CMP(op)                                              \
+DEF_HELPER_FLAGS_3(float_ ## op ## _s, TCG_CALL_NO_RWG, tl, env, i32, i32) \
+DEF_HELPER_FLAGS_3(float_ ## op ## _d, TCG_CALL_NO_RWG, tl, env, i64, i64)
+FOP_CMP(eq)
+FOP_CMP(lt)
+FOP_CMP(le)
+FOP_CMP(un)
+FOP_CMP(ueq)
+FOP_CMP(ule)
+FOP_CMP(ult)
+#undef FOP_CMP
+
+/* interrupt */
+DEF_HELPER_FLAGS_1(rfe, 0, void, env)
+
+/* sys */
+DEF_HELPER_FLAGS_3(mtspr, 0, void, env, tl, tl)
+DEF_HELPER_FLAGS_3(mfspr, TCG_CALL_NO_WG, tl, env, tl, tl)