debug: update debug kit to correctly recognize commpage

src/apps/debugger/debugger_interface/DebuggerInterface.cpp

@@ -13,7 +13,6 @@
 #include <Locker.h>
 
 #include <AutoLocker.h>
-#include <commpage_defs.h>
 #include <OS.h>
 #include <system_info.h>
 #include <util/DoublyLinkedList.h>
@@ -496,24 +495,6 @@ DebuggerInterface::GetImageInfos(BObjectList<ImageInfo>& infos)
 		}
 	}
 
-	// Also add the "commpage" image, which belongs to the kernel, but is used
-	// by userland teams.
-	cookie = 0;
-	while (get_next_image_info(B_SYSTEM_TEAM, &cookie, &imageInfo) == B_OK) {
-		if ((addr_t)imageInfo.text >= USER_COMMPAGE_ADDR
-			&& (addr_t)imageInfo.text < USER_COMMPAGE_ADDR + COMMPAGE_SIZE) {
-			ImageInfo* info = new(std::nothrow) ImageInfo(B_SYSTEM_TEAM,
-				imageInfo.id, imageInfo.name, imageInfo.type,
-				(addr_t)imageInfo.text, imageInfo.text_size,
-				(addr_t)imageInfo.data, imageInfo.data_size);
-			if (info == NULL || !infos.AddItem(info)) {
-				delete info;
-				return B_NO_MEMORY;
-			}
-			break;
-		}
-	}
-
 	return B_OK;
 }
 

src/kits/debug/Image.cpp

@@ -400,3 +400,65 @@ KernelImage::Init(const image_info& info)
 		fSymbolTable, &fSymbolCount, fStringTable, &fStringTableSize,
 		&fLoadDelta);
 }
+
+
+CommPageImage::CommPageImage()
+{
+}
+
+
+CommPageImage::~CommPageImage()
+{
+	delete[] fSymbolTable;
+	delete[] fStringTable;
+}
+
+
+status_t
+CommPageImage::Init(const image_info& info)
+{
+	// find kernel image for commpage
+	image_id commPageID = -1;
+	image_info commPageInfo;
+
+	int32 cookie = 0;
+	while (_kern_get_next_image_info(B_SYSTEM_TEAM, &cookie, &commPageInfo,
+			sizeof(image_info)) == B_OK) {
+		if (!strcmp("commpage", commPageInfo.name)) {
+			commPageID = commPageInfo.id;
+			break;
+		}
+	}
+	if (commPageID < 0)
+		return B_ENTRY_NOT_FOUND;
+
+	fInfo = commPageInfo;
+	fInfo.text = info.text;
+
+	// get the table sizes
+	fSymbolCount = 0;
+	fStringTableSize = 0;
+	status_t error = _kern_read_kernel_image_symbols(commPageID, NULL,
+		&fSymbolCount, NULL, &fStringTableSize, NULL);
+	if (error != B_OK)
+		return error;
+
+	// allocate the tables
+	fSymbolTable = new(std::nothrow) elf_sym[fSymbolCount];
+	fStringTable = new(std::nothrow) char[fStringTableSize];
+	if (fSymbolTable == NULL || fStringTable == NULL)
+		return B_NO_MEMORY;
+
+	// get the info
+	error = _kern_read_kernel_image_symbols(commPageID,
+		fSymbolTable, &fSymbolCount, fStringTable, &fStringTableSize, NULL);
+	if (error != B_OK) {
+		delete[] fSymbolTable;
+		delete[] fStringTable;
+		return error;
+	}
+
+	fLoadDelta = (addr_t)info.text;
+
+	return B_OK;
+}

src/kits/debug/Image.h

@@ -111,6 +111,15 @@ public:
 			status_t			Init(const image_info& info);
 };
 
+
+class CommPageImage : public SymbolTableBasedImage {
+public:
+								CommPageImage();
+	virtual						~CommPageImage();
+
+			status_t			Init(const image_info& info);
+};
+
 }	// namespace Debug
 }	// namespace BPrivate
 

src/kits/debug/SymbolLookup.cpp

@@ -295,6 +295,14 @@ SymbolLookup::Init()
 
 			error = kernelImage->Init(imageInfo);
 			image = kernelImage;
+		} else if (!strcmp("commpage", imageInfo.name)) {
+			// commpage image
+			CommPageImage* commPageImage = new(std::nothrow) CommPageImage;
+			if (commPageImage == NULL)
+				return B_NO_MEMORY;
+
+			error = commPageImage->Init(imageInfo);
+			image = commPageImage;
 		} else {
 			// userland image -- try to load an image file
 			ImageFile* imageFile = new(std::nothrow) ImageFile;

src/system/kernel/commpage.cpp

@@ -79,8 +79,8 @@ commpage_init(void)
 	sFreeCommPageSpace = ALIGN_ENTRY(&sCommPageAddress[COMMPAGE_TABLE_ENTRIES]);
 
 	// create the image for the commpage
-	sCommPageImage = elf_create_memory_image("commpage", 0,
+	sCommPageImage = elf_create_memory_image("commpage", 0, COMMPAGE_SIZE, 0,
-		COMMPAGE_SIZE, 0, 0);
+		0);
 	elf_add_memory_image_symbol(sCommPageImage, "commpage_table",
 		0, COMMPAGE_TABLE_ENTRIES * sizeof(addr_t),
 		B_SYMBOL_TYPE_DATA);