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, 252 insertions, 0 deletions

diff --git a/tests/qtest/fuzz/qtest_wrappers.c b/tests/qtest/fuzz/qtest_wrappers.c
new file mode 100644
index 000000000..0580f8df8
--- /dev/null
+++ b/tests/qtest/fuzz/qtest_wrappers.c
@@ -0,0 +1,252 @@
+/*
+ * qtest function wrappers
+ *
+ * Copyright Red Hat Inc., 2019
+ *
+ * Authors:
+ *  Alexander Bulekov   <alxndr@bu.edu>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "hw/core/cpu.h"
+#include "exec/ioport.h"
+
+#include "fuzz.h"
+
+static bool serialize = true;
+
+#define WRAP(RET_TYPE, NAME_AND_ARGS)\
+    RET_TYPE __wrap_##NAME_AND_ARGS;\
+    RET_TYPE __real_##NAME_AND_ARGS;
+
+WRAP(uint8_t  , qtest_inb(QTestState *s, uint16_t addr))
+WRAP(uint16_t , qtest_inw(QTestState *s, uint16_t addr))
+WRAP(uint32_t , qtest_inl(QTestState *s, uint16_t addr))
+WRAP(void     , qtest_outb(QTestState *s, uint16_t addr, uint8_t value))
+WRAP(void     , qtest_outw(QTestState *s, uint16_t addr, uint16_t value))
+WRAP(void     , qtest_outl(QTestState *s, uint16_t addr, uint32_t value))
+WRAP(uint8_t  , qtest_readb(QTestState *s, uint64_t addr))
+WRAP(uint16_t , qtest_readw(QTestState *s, uint64_t addr))
+WRAP(uint32_t , qtest_readl(QTestState *s, uint64_t addr))
+WRAP(uint64_t , qtest_readq(QTestState *s, uint64_t addr))
+WRAP(void     , qtest_writeb(QTestState *s, uint64_t addr, uint8_t value))
+WRAP(void     , qtest_writew(QTestState *s, uint64_t addr, uint16_t value))
+WRAP(void     , qtest_writel(QTestState *s, uint64_t addr, uint32_t value))
+WRAP(void     , qtest_writeq(QTestState *s, uint64_t addr, uint64_t value))
+WRAP(void     , qtest_memread(QTestState *s, uint64_t addr,
+                              void *data, size_t size))
+WRAP(void     , qtest_bufread(QTestState *s, uint64_t addr, void *data,
+                              size_t size))
+WRAP(void     , qtest_memwrite(QTestState *s, uint64_t addr, const void *data,
+                               size_t size))
+WRAP(void,      qtest_bufwrite(QTestState *s, uint64_t addr,
+                               const void *data, size_t size))
+WRAP(void,      qtest_memset(QTestState *s, uint64_t addr,
+                             uint8_t patt, size_t size))
+
+
+uint8_t __wrap_qtest_inb(QTestState *s, uint16_t addr)
+{
+    if (!serialize) {
+        return cpu_inb(addr);
+    } else {
+        return __real_qtest_inb(s, addr);
+    }
+}
+
+uint16_t __wrap_qtest_inw(QTestState *s, uint16_t addr)
+{
+    if (!serialize) {
+        return cpu_inw(addr);
+    } else {
+        return __real_qtest_inw(s, addr);
+    }
+}
+
+uint32_t __wrap_qtest_inl(QTestState *s, uint16_t addr)
+{
+    if (!serialize) {
+        return cpu_inl(addr);
+    } else {
+        return __real_qtest_inl(s, addr);
+    }
+}
+
+void __wrap_qtest_outb(QTestState *s, uint16_t addr, uint8_t value)
+{
+    if (!serialize) {
+        cpu_outb(addr, value);
+    } else {
+        __real_qtest_outb(s, addr, value);
+    }
+}
+
+void __wrap_qtest_outw(QTestState *s, uint16_t addr, uint16_t value)
+{
+    if (!serialize) {
+        cpu_outw(addr, value);
+    } else {
+        __real_qtest_outw(s, addr, value);
+    }
+}
+
+void __wrap_qtest_outl(QTestState *s, uint16_t addr, uint32_t value)
+{
+    if (!serialize) {
+        cpu_outl(addr, value);
+    } else {
+        __real_qtest_outl(s, addr, value);
+    }
+}
+
+uint8_t __wrap_qtest_readb(QTestState *s, uint64_t addr)
+{
+    uint8_t value;
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 1);
+        return value;
+    } else {
+        return __real_qtest_readb(s, addr);
+    }
+}
+
+uint16_t __wrap_qtest_readw(QTestState *s, uint64_t addr)
+{
+    uint16_t value;
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 2);
+        return value;
+    } else {
+        return __real_qtest_readw(s, addr);
+    }
+}
+
+uint32_t __wrap_qtest_readl(QTestState *s, uint64_t addr)
+{
+    uint32_t value;
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 4);
+        return value;
+    } else {
+        return __real_qtest_readl(s, addr);
+    }
+}
+
+uint64_t __wrap_qtest_readq(QTestState *s, uint64_t addr)
+{
+    uint64_t value;
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 8);
+        return value;
+    } else {
+        return __real_qtest_readq(s, addr);
+    }
+}
+
+void __wrap_qtest_writeb(QTestState *s, uint64_t addr, uint8_t value)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 1);
+    } else {
+        __real_qtest_writeb(s, addr, value);
+    }
+}
+
+void __wrap_qtest_writew(QTestState *s, uint64_t addr, uint16_t value)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 2);
+    } else {
+        __real_qtest_writew(s, addr, value);
+    }
+}
+
+void __wrap_qtest_writel(QTestState *s, uint64_t addr, uint32_t value)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 4);
+    } else {
+        __real_qtest_writel(s, addr, value);
+    }
+}
+
+void __wrap_qtest_writeq(QTestState *s, uint64_t addr, uint64_t value)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            &value, 8);
+    } else {
+        __real_qtest_writeq(s, addr, value);
+    }
+}
+
+void __wrap_qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size)
+{
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
+                           size);
+    } else {
+        __real_qtest_memread(s, addr, data, size);
+    }
+}
+
+void __wrap_qtest_bufread(QTestState *s, uint64_t addr, void *data, size_t size)
+{
+    if (!serialize) {
+        address_space_read(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED, data,
+                           size);
+    } else {
+        __real_qtest_bufread(s, addr, data, size);
+    }
+}
+
+void __wrap_qtest_memwrite(QTestState *s, uint64_t addr, const void *data,
+                           size_t size)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            data, size);
+    } else {
+        __real_qtest_memwrite(s, addr, data, size);
+    }
+}
+
+void __wrap_qtest_bufwrite(QTestState *s, uint64_t addr,
+                    const void *data, size_t size)
+{
+    if (!serialize) {
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            data, size);
+    } else {
+        __real_qtest_bufwrite(s, addr, data, size);
+    }
+}
+void __wrap_qtest_memset(QTestState *s, uint64_t addr,
+                         uint8_t patt, size_t size)
+{
+    void *data;
+    if (!serialize) {
+        data = malloc(size);
+        memset(data, patt, size);
+        address_space_write(first_cpu->as, addr, MEMTXATTRS_UNSPECIFIED,
+                            data, size);
+    } else {
+        __real_qtest_memset(s, addr, patt, size);
+    }
+}
+
+void fuzz_qtest_set_serialize(bool option)
+{
+    serialize = option;
+}