From: novafacing <rowanbh...@gmail.com>
Signed-off-by: novafacing <rowanbh...@gmail.com>
Signed-off-by: Rowan Hart <rowanbh...@gmail.com>
---
include/qemu/qemu-plugin.h | 21 +++++++++++++++++++++
plugins/api.c | 18 ++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h
index 1380f7d441..eff8430b4a 100644
--- a/include/qemu/qemu-plugin.h
+++ b/include/qemu/qemu-plugin.h
@@ -993,6 +993,27 @@ QEMU_PLUGIN_API
bool qemu_plugin_read_memory_vaddr(uint64_t addr,
GByteArray *data, size_t len);
+/**
+ * qemu_plugin_write_memory_vaddr() - write to memory using a virtual address
+ *
+ * @addr: A virtual address to write to
+ * @data: A byte array containing the data to write
+ *
+ * The contents of @data will be written to memory starting at the virtual
+ * address @addr.
+ *
+ * This function does not guarantee consistency of writes, nor does it ensure
+ * that pending writes are flushed either before or after the write takes
place,
+ * so callers should take care to only call this function in vCPU context (i.e.
+ * in callbacks) and avoid depending on the existence of data written using
this
+ * function which may be overwritten afterward.
+ *
+ * Returns true on success and false on failure.
+ */
+QEMU_PLUGIN_API
+bool qemu_plugin_write_memory_vaddr(uint64_t addr,
+ GByteArray *data);
+
/**
* qemu_plugin_scoreboard_new() - alloc a new scoreboard
*
diff --git a/plugins/api.c b/plugins/api.c
index d1cc6ff86e..19c10bb39e 100644
--- a/plugins/api.c
+++ b/plugins/api.c
@@ -551,6 +551,24 @@ bool qemu_plugin_read_memory_vaddr(uint64_t addr,
GByteArray *data, size_t len)
return true;
}
+bool qemu_plugin_write_memory_vaddr(uint64_t addr, GByteArray *data)
+{
+ g_assert(current_cpu);
+
+ if (data->len == 0) {
+ return false;
+ }
+
+ int result = cpu_memory_rw_debug(current_cpu, addr, data->data,
+ data->len, true);
+
+ if (result < 0) {
+ return false;
+ }
+
+ return true;
+}
+
struct qemu_plugin_scoreboard *qemu_plugin_scoreboard_new(size_t element_size)
{
return plugin_scoreboard_new(element_size);
--
2.49.0
