From 18083837fe452a91e457f02ed8be2abf5fc66877 Mon Sep 17 00:00:00 2001
From: Rusty Wagner <rusty@vector35.com>
Date: Fri, 14 Jul 2017 18:49:26 -0400
Subject: Add API to get list of all definitions or uses of a variable

---
 binaryninjaapi.h        |  3 +++
 binaryninjacore.h       |  5 +++++
 mediumlevelil.cpp       | 28 ++++++++++++++++++++++++++++
 python/mediumlevelil.py | 26 ++++++++++++++++++++++++++
 4 files changed, 62 insertions(+)

diff --git a/binaryninjaapi.h b/binaryninjaapi.h
index f079e7c0..20752370 100644
--- a/binaryninjaapi.h
+++ b/binaryninjaapi.h
@@ -2520,6 +2520,9 @@ namespace BinaryNinja
 		std::set<size_t> GetSSAVarUses(const Variable& var, size_t version) const;
 		std::set<size_t> GetSSAMemoryUses(size_t version) const;
 
+		std::set<size_t> GetVariableDefinitions(const Variable& var) const;
+		std::set<size_t> GetVariableUses(const Variable& var) const;
+
 		RegisterValue GetSSAVarValue(const Variable& var, size_t version);
 		RegisterValue GetExprValue(size_t expr);
 		PossibleValueSet GetPossibleSSAVarValues(const Variable& var, size_t version, size_t instr);
diff --git a/binaryninjacore.h b/binaryninjacore.h
index 0414b512..e601cd1c 100644
--- a/binaryninjacore.h
+++ b/binaryninjacore.h
@@ -2435,6 +2435,11 @@ extern "C"
 	BINARYNINJACOREAPI size_t* BNGetMediumLevelILSSAMemoryUses(BNMediumLevelILFunction* func,
 		size_t version, size_t* count);
 
+	BINARYNINJACOREAPI size_t* BNGetMediumLevelILVariableDefinitions(BNMediumLevelILFunction* func,
+		const BNVariable* var, size_t* count);
+	BINARYNINJACOREAPI size_t* BNGetMediumLevelILVariableUses(BNMediumLevelILFunction* func,
+		const BNVariable* var, size_t* count);
+
 	BINARYNINJACOREAPI BNRegisterValue BNGetMediumLevelILSSAVarValue(BNMediumLevelILFunction* func,
 		const BNVariable* var, size_t version);
 	BINARYNINJACOREAPI BNRegisterValue BNGetMediumLevelILExprValue(BNMediumLevelILFunction* func, size_t expr);
diff --git a/mediumlevelil.cpp b/mediumlevelil.cpp
index df78de2d..b4abaa72 100644
--- a/mediumlevelil.cpp
+++ b/mediumlevelil.cpp
@@ -313,6 +313,34 @@ set<size_t> MediumLevelILFunction::GetSSAMemoryUses(size_t version) const
 }
 
 
+set<size_t> MediumLevelILFunction::GetVariableDefinitions(const Variable& var) const
+{
+	size_t count;
+	size_t* instrs = BNGetMediumLevelILVariableDefinitions(m_object, &var, &count);
+
+	set<size_t> result;
+	for (size_t i = 0; i < count; i++)
+		result.insert(instrs[i]);
+
+	BNFreeILInstructionList(instrs);
+	return result;
+}
+
+
+set<size_t> MediumLevelILFunction::GetVariableUses(const Variable& var) const
+{
+	size_t count;
+	size_t* instrs = BNGetMediumLevelILVariableUses(m_object, &var, &count);
+
+	set<size_t> result;
+	for (size_t i = 0; i < count; i++)
+		result.insert(instrs[i]);
+
+	BNFreeILInstructionList(instrs);
+	return result;
+}
+
+
 RegisterValue MediumLevelILFunction::GetSSAVarValue(const Variable& var, size_t version)
 {
 	BNRegisterValue value = BNGetMediumLevelILSSAVarValue(m_object, &var, version);
diff --git a/python/mediumlevelil.py b/python/mediumlevelil.py
index 76a85a86..8a8d8d0b 100644
--- a/python/mediumlevelil.py
+++ b/python/mediumlevelil.py
@@ -793,6 +793,32 @@ class MediumLevelILFunction(object):
 		core.BNFreeILInstructionList(instrs)
 		return result
 
+	def get_var_definitions(self, var):
+		count = ctypes.c_ulonglong()
+		var_data = core.BNVariable()
+		var_data.type = var.source_type
+		var_data.index = var.index
+		var_data.storage = var.storage
+		instrs = core.BNGetMediumLevelILVariableDefinitions(self.handle, var_data, count)
+		result = []
+		for i in xrange(0, count.value):
+			result.append(instrs[i])
+		core.BNFreeILInstructionList(instrs)
+		return result
+
+	def get_var_uses(self, var):
+		count = ctypes.c_ulonglong()
+		var_data = core.BNVariable()
+		var_data.type = var.source_type
+		var_data.index = var.index
+		var_data.storage = var.storage
+		instrs = core.BNGetMediumLevelILVariableUses(self.handle, var_data, count)
+		result = []
+		for i in xrange(0, count.value):
+			result.append(instrs[i])
+		core.BNFreeILInstructionList(instrs)
+		return result
+
 	def get_ssa_var_value(self, ssa_var):
 		var_data = core.BNVariable()
 		var_data.type = ssa_var.var.source_type
-- 
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