Add initial version with header/secdesc parsing.
diff --git a/cper-utils.c b/cper-utils.c
new file mode 100644
index 0000000..454d93d
--- /dev/null
+++ b/cper-utils.c
@@ -0,0 +1,66 @@
+/**
+ * Describes utility functions for parsing CPER into JSON IR.
+ *
+ * Author: Lawrence.Tang@arm.com
+ **/
+
+#include <stdio.h>
+#include "json.h"
+#include "edk/Cper.h"
+#include "cper-utils.h"
+
+//The available severity types for CPER.
+const char* CPER_SEVERITY_TYPES[4] = {"Recoverable", "Fatal", "Corrected", "Informational"};
+
+//Converts a single UINT16 revision number into JSON IR representation.
+json_object* revision_to_ir(UINT16 revision)
+{
+ json_object* revision_info = json_object_new_object();
+ json_object_object_add(revision_info, "major", json_object_new_int(revision >> 8));
+ json_object_object_add(revision_info, "minor", json_object_new_int(revision & 0xFF));
+ return revision_info;
+}
+
+//Returns the appropriate string for the given integer severity.
+const char* severity_to_string(UINT8 severity)
+{
+ return severity < 4 ? CPER_SEVERITY_TYPES[severity] : "Unknown";
+}
+
+//Helper function to convert an EDK EFI GUID into a string for intermediate use.
+void guid_to_string(char* out, EFI_GUID* guid)
+{
+ sprintf(out, "%08x-%04x-%04x-%02x%02x%02x%02x%02x%02x%02x%02x",
+ guid->Data1,
+ guid->Data2,
+ guid->Data3,
+ guid->Data4[0],
+ guid->Data4[1],
+ guid->Data4[2],
+ guid->Data4[3],
+ guid->Data4[4],
+ guid->Data4[5],
+ guid->Data4[6],
+ guid->Data4[7]);
+}
+
+//Returns one if two EFI GUIDs are equal, zero otherwise.
+int guid_equal(EFI_GUID* a, EFI_GUID* b)
+{
+ //Check top base 3 components.
+ if (a->Data1 != b->Data1
+ || a->Data2 != b->Data2
+ || a->Data3 != b->Data3)
+ {
+ return 0;
+ }
+
+ //Check Data4 array for equality.
+ for (int i=0; i<8; i++)
+ {
+ if (a->Data4[i] != b->Data4[i])
+ return 0;
+ }
+
+ return 1;
+}
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