X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Floader%2FObjectFile.cpp;h=929b54a24025d01e57080593b37e28a5538a7ab7;hb=8c8061a4f8b88410d6d93c039afe6affc4b69cf2;hp=4cb886223c80150216cdad339bdbc59312bcbafe;hpb=0f30d8254ff8b9e63795960ec031577cf68fbf95;p=l2e.git

diff --git a/src/loader/ObjectFile.cpp b/src/loader/ObjectFile.cpp
index 4cb8862..929b54a 100644
--- a/src/loader/ObjectFile.cpp
+++ b/src/loader/ObjectFile.cpp
@@ -1,12 +1,10 @@
-/*
- * ObjectFile.cpp
- *
- *  Created on: Sep 15, 2012
- *      Author: holy
- */
-
 #include "ObjectFile.h"
 
+#include <stdexcept>
+
+using std::runtime_error;
+
+
 namespace loader {
 
 ObjectFileHeader::ObjectFileHeader()
@@ -15,40 +13,114 @@ ObjectFileHeader::ObjectFileHeader()
 , exportsEnd(0)
 , externalsBegin(0)
 , externalsEnd(0)
-, exportStringsBegin(0)
-, exportStringsEnd(0)
-, externalStringsBegin(0)
-, externalStringsEnd(0)
-, imagesBegin(0)
-, imagesEnd(0)
 , objectsBegin(0)
-, objectsEnd(0) {
+, objectsEnd(0)
+, arraysBegin(0)
+, arraysEnd(0) {
 	ident[0] = 'L';
 	ident[1] = '2';
 	ident[2] = 'E';
 	ident[3] = '\n';
 }
 
-LoadedObjectFile::LoadedObjectFile()
-: allocPtr(0)
-, fileHeader(0)
-, typeOffsetsBegin(0)
-, typeOffsetsEnd(0)
-, exportsBegin(0)
-, exportsEnd(0)
-, externalsBegin(0)
-, externalsEnd(0)
-, exportStringsBegin(0)
-, exportStringsEnd(0)
-, externalStringsBegin(0)
-, externalStringsEnd(0)
-, imagesBegin(0)
-, imagesEnd(0)
-, objectsBegin(0)
-, objectsEnd(0)
-, surfaces(0)
-, surfaceCount(0) {
+void ObjectFileHeader::IntegrityCheck(unsigned int fsize) const {
+	if (ident[0] != 'L'
+			|| ident[1] != '2'
+			|| ident[2] != 'E'
+			|| ident[3] != '\n') {
+		throw runtime_error("magic bytes mismatch");
+	}
+	if (versionId != FORMAT_ID) {
+		throw runtime_error("format ID mismatch");
+	}
+	if (exportsBegin < sizeof(ObjectFileHeader)
+			|| exportsBegin > fsize) {
+		throw runtime_error("exports section out of bounds");
+	}
+	if (exportsEnd < exportsBegin
+			|| exportsEnd > fsize
+			|| (exportsEnd - exportsBegin) % sizeof(Export) != 0) {
+		throw runtime_error("bogus exports section end");
+	}
+	if (externalsBegin < sizeof(ObjectFileHeader)
+			|| externalsBegin >= fsize) {
+		throw runtime_error("externals section out of bounds");
+	}
+	if (externalsEnd < externalsBegin
+			|| externalsEnd > fsize
+			|| (externalsEnd - externalsBegin) % sizeof(External) != 0) {
+		throw runtime_error("bogus externals section end");
+	}
+	if (objectsBegin < sizeof(ObjectFileHeader)
+			|| objectsBegin >= fsize
+			|| objectsEnd < objectsBegin
+			|| objectsEnd > fsize) {
+		throw runtime_error("objects section out of bounds");
+	}
+	if (arraysBegin < sizeof(ObjectFileHeader)
+			|| arraysBegin >= fsize
+			|| arraysEnd < arraysBegin
+			|| arraysEnd > fsize) {
+		throw runtime_error("arrays section out of bounds");
+	}
+}
+
+Export *ObjectFileHeader::ExportsBegin() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Export *>(data + exportsBegin);
+}
+
+Export *ObjectFileHeader::ExportsEnd() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Export *>(data + exportsEnd);
+}
+
+External *ObjectFileHeader::ExternalsBegin() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<External *>(data + externalsBegin);
+}
+
+External *ObjectFileHeader::ExternalsEnd() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<External *>(data + externalsEnd);
+}
+
+Object *ObjectFileHeader::ObjectsBegin() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Object *>(data + objectsBegin);
+}
+
+Object *ObjectFileHeader::ObjectsEnd() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Object *>(data + objectsEnd);
+}
+
+Array *ObjectFileHeader::ArraysBegin() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Array *>(data + arraysBegin);
+}
+
+Array *ObjectFileHeader::ArraysEnd() {
+	char *data = reinterpret_cast<char *>(this);
+	return reinterpret_cast<Array *>(data + arraysEnd);
+}
+
+
+char *Object::RawObject() {
+	return reinterpret_cast<char *>(this) + sizeof(Object);
+}
+
+Object *Object::Next() {
+	return reinterpret_cast<Object *>(RawObject() + size);
+}
+
+
+char *Array::Data() {
+	return reinterpret_cast<char *>(this) + sizeof(Array);
+}
 
+Array *Array::Next() {
+	return reinterpret_cast<Array *>(Data() + size);
 }
 
 }