riscv64: Fill in more bulk architecture items around libroot/kernel

Change-Id: Ia2a86d8814d06950ea2d2d19d966c642d26f81d6 Reviewed-on: https://review.haiku-os.org/c/1302 Reviewed-by: Alex von Gluck IV <[email protected]> Reviewed-by: Adrien Destugues <[email protected]>
2019-03-25 17:16:03 +00:00
parent 7f94422796
commit c085f38639
34 changed files with 1847 additions and 5 deletions
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2005, Ingo Weinhold, [email protected].
+ * Copyright 2012, Alex Smith, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <debug_support.h>
+
+#include "arch_debug_support.h"
+
+
+struct stack_frame {
+	struct stack_frame	*previous;
+	void				*return_address;
+};
+
+
+status_t
+arch_debug_get_instruction_pointer(debug_context *context, thread_id thread,
+	void **ip, void **stackFrameAddress)
+{
+	// get the CPU state
+	debug_cpu_state cpuState;
+	status_t error = debug_get_cpu_state(context, thread, NULL, &cpuState);
+	if (error != B_OK)
+		return error;
+
+	*ip = (void*)cpuState.rip;
+	*stackFrameAddress = (void*)cpuState.rbp;
+
+	return B_OK;
+}
+
+
+status_t
+arch_debug_get_stack_frame(debug_context *context, void *stackFrameAddress,
+	debug_stack_frame_info *stackFrameInfo)
+{
+	stack_frame stackFrame;
+	ssize_t bytesRead = debug_read_memory(context, stackFrameAddress,
+		&stackFrame, sizeof(stackFrame));
+	if (bytesRead < B_OK)
+		return bytesRead;
+	if (bytesRead != sizeof(stackFrame))
+		return B_ERROR;
+
+	stackFrameInfo->frame = stackFrameAddress;
+	stackFrameInfo->parent_frame = stackFrame.previous;
+	stackFrameInfo->return_address = stackFrame.return_address;
+	return B_OK;
+}