Extend DebuggerInterface.

- Factor out an _GetDebugCpuState() call to share between
{Get,Set}CpuState().

- Add SetCpuState() which allows to update the state of a given thread.

src/apps/debugger/debugger_interface/DebuggerInterface.cpp

@@ -23,6 +23,7 @@
 #include "ArchitectureX86.h"
 #include "ArchitectureX8664.h"
 #include "AreaInfo.h"
+#include "AutoDeleter.h"
 #include "CpuState.h"
 #include "DebugEvent.h"
 #include "ImageInfo.h"
@@ -663,24 +664,37 @@ DebuggerInterface::GetThreadInfo(thread_id thread, ThreadInfo& info)
 status_t
 DebuggerInterface::GetCpuState(thread_id thread, CpuState*& _state)
 {
-	DebugContextGetter contextGetter(fDebugContextPool);
-
-	debug_nub_get_cpu_state message;
-	message.reply_port = contextGetter.Context()->reply_port;
-	message.thread = thread;
-
-	debug_nub_get_cpu_state_reply reply;
-
-	status_t error = send_debug_message(contextGetter.Context(),
-		B_DEBUG_MESSAGE_GET_CPU_STATE, &message, sizeof(message), &reply,
-		sizeof(reply));
+	debug_cpu_state debugState;
+	status_t error = _GetDebugCpuState(thread, debugState);
 	if (error != B_OK)
 		return error;
-	if (reply.error != B_OK)
-		return reply.error;
+	return fArchitecture->CreateCpuState(&debugState, sizeof(debug_cpu_state),
+		_state);
+}
 
-	return fArchitecture->CreateCpuState(&reply.cpu_state,
-		sizeof(debug_cpu_state), _state);
+
+status_t
+DebuggerInterface::SetCpuState(thread_id thread, const CpuState* state)
+{
+	debug_cpu_state debugState;
+	status_t error = _GetDebugCpuState(thread, debugState);
+	if (error != B_OK)
+		return error;
+
+	DebugContextGetter contextGetter(fDebugContextPool);
+
+	error = state->UpdateDebugState(&debugState, sizeof(debugState));
+	if (error != B_OK)
+		return error;
+
+	debug_nub_set_cpu_state message;
+	message.thread = thread;
+
+	memcpy(&message.cpu_state, &debugState, sizeof(debugState));
+
+	return send_debug_message(contextGetter.Context(),
+		B_DEBUG_MESSAGE_SET_CPU_STATE, &message, sizeof(message), NULL,
+		0);
 }
 
 
@@ -883,3 +897,28 @@ DebuggerInterface::_GetNextSystemWatchEvent(DebugEvent*& _event,
 
 	return error;
 }
+
+
+status_t
+DebuggerInterface::_GetDebugCpuState(thread_id thread, debug_cpu_state& _state)
+{
+	DebugContextGetter contextGetter(fDebugContextPool);
+
+	debug_nub_get_cpu_state message;
+	message.reply_port = contextGetter.Context()->reply_port;
+	message.thread = thread;
+
+	debug_nub_get_cpu_state_reply reply;
+
+	status_t error = send_debug_message(contextGetter.Context(),
+		B_DEBUG_MESSAGE_GET_CPU_STATE, &message, sizeof(message), &reply,
+		sizeof(reply));
+	if (error != B_OK)
+		return error;
+	if (reply.error != B_OK)
+		return reply.error;
+
+	memcpy(&_state, &reply.cpu_state, sizeof(debug_cpu_state));
+
+	return B_OK;
+}

src/apps/debugger/debugger_interface/DebuggerInterface.h

@@ -74,6 +74,8 @@ public:
 	virtual	status_t			GetCpuState(thread_id thread,
 									CpuState*& _state);
 										// returns a reference to the caller
+	virtual	status_t			SetCpuState(thread_id thread,
+									const CpuState* state);
 
 	// TeamMemory
 	virtual	ssize_t				ReadMemory(target_addr_t address, void* buffer,
@@ -94,6 +96,9 @@ private:
 			status_t			_GetNextSystemWatchEvent(DebugEvent*& _event,
 									BPrivate::KMessage& message);
 
+			status_t			_GetDebugCpuState(thread_id thread,
+									debug_cpu_state& _state);
+
 private:
 			team_id				fTeamID;
 			port_id				fDebuggerPort;