Added of_exit and of_enter KDL commands.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15782 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/platform.h

@@ -14,6 +14,7 @@ extern "C" {
 #endif
 
 status_t platform_init(struct kernel_args *kernelArgs);
+status_t platform_init_post_vm(struct kernel_args *kernelArgs);
 
 #ifdef __cplusplus
 }	// extern "C"

src/system/kernel/main.c

@@ -104,6 +104,7 @@ _start(kernel_args *bootKernelArgs, int currentCPU)
 			// the boot loader allocated region is not used anymore
 
 		// now we can use the heap and create areas
+		platform_init_post_vm(&sKernelArgs);
 		TRACE(("init driver_settings\n"));
 		boot_item_init();
 		driver_settings_init(&sKernelArgs);

src/system/kernel/platform/bios_ia32/platform.cpp

@@ -12,3 +12,10 @@ platform_init(struct kernel_args *kernelArgs)
 {
 	return B_OK;
 }
+
+
+status_t
+platform_init_post_vm(struct kernel_args *kernelArgs)
+{
+	return B_OK;
+}

src/system/kernel/platform/openfirmware/platform.cpp

@@ -5,12 +5,46 @@
 
 #include <platform.h>
 
+#include <KernelExport.h>
+
 #include <boot/kernel_args.h>
 #include <platform/openfirmware/openfirmware.h>
 
+
+static int
+debug_command_of_exit(int argc, char **argv)
+{
+	of_exit();
+	kprintf("of_exit() failed!\n");
+	return 0;
+}
+
+
+static int
+debug_command_of_enter(int argc, char **argv)
+{
+	of_call_client_function("enter", 0, 0);
+	return 0;
+}
+
+
 status_t
 platform_init(struct kernel_args *kernelArgs)
 {
 	return of_init(
 		(int(*)(void*))kernelArgs->platform_args.openfirmware_entry);
 }
+
+
+status_t
+platform_init_post_vm(struct kernel_args *kernelArgs)
+{
+	add_debugger_command("of_exit", &debug_command_of_exit,
+		"Exit to the Open Firmware prompt. No way to get back into the OS!");
+	add_debugger_command("of_enter", &debug_command_of_enter,
+		"Enter a subordinate Open Firmware interpreter. Quitting it returns "
+		"to KDL.");
+
+	return B_OK;
+}
+