Adding HSA extension AMD AQL profile library, see Readme.txt

Change-Id: Icbc1e0fb0185642eabbab411a2138ea030d22be8

runtime/hsa-ext-aql-profile/src/perfcounter/var_data.cpp

@@ -0,0 +1,48 @@
+#include <string.h>
+#include "var_data.h"
+
+namespace pm4_profile {
+VarData::VarData() {
+  size_ = 0;
+  p_data_ = NULL;
+}
+
+VarData::~VarData() {}
+
+void VarData::clear() {
+  size_ = 0;
+  if (p_data_) {
+    free(p_data_);
+    p_data_ = NULL;
+  }
+}
+
+bool VarData::set(uint32_t size, const void* p_data) {
+  if (!p_data || (size == 0)) {
+    return false;
+  }
+
+  clear();
+
+  if (NULL == (p_data_ = malloc(size))) {
+    return false;
+  }
+
+  memcpy(p_data_, p_data, size);
+  size_ = size;
+
+  return true;
+}
+
+uint32_t VarData::get(uint32_t size, void* p_data) {
+  if (!p_data || !size || !p_data_ || !size_) {
+    return 0;
+  }
+
+  uint32_t ret_size = size < size_ ? size : size_;
+
+  memcpy(p_data, p_data_, ret_size);
+
+  return ret_size;
+}
+}  // pm4_profile