Register the commpage as an image and its entries as symbols.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27722 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/commpage.h

@@ -5,6 +5,7 @@
 #ifndef _KERNEL_COMMPAGE_H
 #define _KERNEL_COMMPAGE_H
 
+#include <image.h>
 #include <SupportDefs.h>
 
 #include <commpage_defs.h>
@@ -17,6 +18,7 @@ extern "C" {
 status_t	commpage_init(void);
 void*		allocate_commpage_entry(int entry, size_t size);
 void*		fill_commpage_entry(int entry, const void* copyFrom, size_t size);
+image_id	get_commpage_image();
 
 status_t	arch_commpage_init(void);
 	// implemented in the architecture specific part

src/system/kernel/arch/x86/arch_commpage.cpp

@@ -11,6 +11,7 @@
 #include <KernelExport.h>
 
 #include <cpu.h>
+#include <elf.h>
 #include <smp.h>
 
 
@@ -90,6 +91,12 @@ initialize_commpage_syscall(void)
 	size_t len = (size_t)((addr_t)syscallCodeEnd - (addr_t)syscallCode);
 	fill_commpage_entry(COMMPAGE_ENTRY_X86_SYSCALL, syscallCode, len);
 
+	// add syscall to the commpage image
+	image_id image = get_commpage_image();
+	elf_add_memory_image_symbol(image, "commpage_syscall",
+		((addr_t*)USER_COMMPAGE_ADDR)[COMMPAGE_ENTRY_X86_SYSCALL], len,
+		B_SYMBOL_TYPE_TEXT);
+
 	return B_OK;
 }
 

src/system/kernel/arch/x86/arch_cpu.cpp

@@ -18,6 +18,7 @@
 #include <boot_device.h>
 #include <commpage.h>
 #include <debug.h>
+#include <elf.h>
 #include <smp.h>
 #include <tls.h>
 #include <vm.h>
@@ -607,9 +608,16 @@ arch_cpu_init_post_modules(kernel_args *args)
 	}
 
 	// put the optimized functions into the commpage
-	fill_commpage_entry(COMMPAGE_ENTRY_X86_MEMCPY, (const void *)gOptimizedFunctions.memcpy,
-		(addr_t)gOptimizedFunctions.memcpy_end
-			- (addr_t)gOptimizedFunctions.memcpy);
+	size_t memcpyLen = (addr_t)gOptimizedFunctions.memcpy_end
+		- (addr_t)gOptimizedFunctions.memcpy;
+	fill_commpage_entry(COMMPAGE_ENTRY_X86_MEMCPY,
+		(const void*)gOptimizedFunctions.memcpy, memcpyLen);
+
+	// add the functions to the commpage image
+	image_id image = get_commpage_image();
+	elf_add_memory_image_symbol(image, "commpage_memcpy",
+		((addr_t*)USER_COMMPAGE_ADDR)[COMMPAGE_ENTRY_X86_MEMCPY], memcpyLen,
+		B_SYMBOL_TYPE_TEXT);
 
 	return B_OK;
 }

src/system/kernel/commpage.cpp

@@ -9,6 +9,7 @@
 
 #include <KernelExport.h>
 
+#include <elf.h>
 #include <vm.h>
 #include <vm_types.h>
 
@@ -18,6 +19,7 @@ static area_id	sUserCommPageArea;
 static addr_t*	sCommPageAddress;
 static addr_t*	sUserCommPageAddress;
 static void*	sFreeCommPageSpace;
+static image_id	sCommPageImage;
 
 
 #define ALIGN_ENTRY(pointer)	(void*)ROUNDUP((addr_t)(pointer), 8)
@@ -44,6 +46,13 @@ fill_commpage_entry(int entry, const void* copyFrom, size_t size)
 }
 
 
+image_id
+get_commpage_image()
+{
+	return sCommPageImage;
+}
+
+
 status_t
 commpage_init(void)
 {
@@ -68,6 +77,13 @@ commpage_init(void)
 	// the next slot to allocate space is after the table
 	sFreeCommPageSpace = ALIGN_ENTRY(&sCommPageAddress[COMMPAGE_TABLE_ENTRIES]);
 
+	// create the image for the commpage
+	sCommPageImage = elf_create_memory_image("commpage", USER_COMMPAGE_ADDR,
+		COMMPAGE_SIZE, 0, 0);
+	elf_add_memory_image_symbol(sCommPageImage, "commpage_table",
+		USER_COMMPAGE_ADDR, COMMPAGE_TABLE_ENTRIES * sizeof(addr_t),
+		B_SYMBOL_TYPE_DATA);
+
 	arch_commpage_init();
 
 	return B_OK;