From acf28440dc4e8d805a057b6271a73e0d4e8c9e4f Mon Sep 17 00:00:00 2001
From: Rusty Wagner <rusty@vector35.com>
Date: Thu, 30 Aug 2018 22:11:22 -0400
Subject: Allow negative stack offsets for functions like alloca_probe

---
 function.cpp | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

(limited to 'function.cpp')

diff --git a/function.cpp b/function.cpp
index 35fe4123..167a6285 100644
--- a/function.cpp
+++ b/function.cpp
@@ -538,10 +538,10 @@ Confidence<bool> Function::HasVariableArguments() const
 }
 
 
-Confidence<size_t> Function::GetStackAdjustment() const
+Confidence<int64_t> Function::GetStackAdjustment() const
 {
-	BNSizeWithConfidence sc = BNGetFunctionStackAdjustment(m_object);
-	return Confidence<size_t>(sc.value, sc.confidence);
+	BNOffsetWithConfidence oc = BNGetFunctionStackAdjustment(m_object);
+	return Confidence<int64_t>(oc.value, oc.confidence);
 }
 
 
@@ -643,12 +643,12 @@ void Function::SetAutoCanReturn(const Confidence<bool>& returns)
 }
 
 
-void Function::SetAutoStackAdjustment(const Confidence<size_t>& stackAdjust)
+void Function::SetAutoStackAdjustment(const Confidence<int64_t>& stackAdjust)
 {
-	BNSizeWithConfidence sc;
-	sc.value = stackAdjust.GetValue();
-	sc.confidence = stackAdjust.GetConfidence();
-	BNSetAutoFunctionStackAdjustment(m_object, &sc);
+	BNOffsetWithConfidence oc;
+	oc.value = stackAdjust.GetValue();
+	oc.confidence = stackAdjust.GetConfidence();
+	BNSetAutoFunctionStackAdjustment(m_object, &oc);
 }
 
 
@@ -757,12 +757,12 @@ void Function::SetCanReturn(const Confidence<bool>& returns)
 }
 
 
-void Function::SetStackAdjustment(const Confidence<size_t>& stackAdjust)
+void Function::SetStackAdjustment(const Confidence<int64_t>& stackAdjust)
 {
-	BNSizeWithConfidence sc;
-	sc.value = stackAdjust.GetValue();
-	sc.confidence = stackAdjust.GetConfidence();
-	BNSetUserFunctionStackAdjustment(m_object, &sc);
+	BNOffsetWithConfidence oc;
+	oc.value = stackAdjust.GetValue();
+	oc.confidence = stackAdjust.GetConfidence();
+	BNSetUserFunctionStackAdjustment(m_object, &oc);
 }
 
 
@@ -1026,7 +1026,7 @@ vector<IndirectBranchInfo> Function::GetIndirectBranchesAt(Architecture* arch, u
 }
 
 
-void Function::SetAutoCallStackAdjustment(Architecture* arch, uint64_t addr, const Confidence<size_t>& adjust)
+void Function::SetAutoCallStackAdjustment(Architecture* arch, uint64_t addr, const Confidence<int64_t>& adjust)
 {
 	BNSetAutoCallStackAdjustment(m_object, arch->GetObject(), addr, adjust.GetValue(), adjust.GetConfidence());
 }
@@ -1057,7 +1057,7 @@ void Function::SetAutoCallRegisterStackAdjustment(Architecture* arch, uint64_t a
 }
 
 
-void Function::SetUserCallStackAdjustment(Architecture* arch, uint64_t addr, const Confidence<size_t>& adjust)
+void Function::SetUserCallStackAdjustment(Architecture* arch, uint64_t addr, const Confidence<int64_t>& adjust)
 {
 	BNSetUserCallStackAdjustment(m_object, arch->GetObject(), addr, adjust.GetValue(), adjust.GetConfidence());
 }
@@ -1088,10 +1088,10 @@ void Function::SetUserCallRegisterStackAdjustment(Architecture* arch, uint64_t a
 }
 
 
-Confidence<size_t> Function::GetCallStackAdjustment(Architecture* arch, uint64_t addr)
+Confidence<int64_t> Function::GetCallStackAdjustment(Architecture* arch, uint64_t addr)
 {
-	BNSizeWithConfidence result = BNGetCallStackAdjustment(m_object, arch->GetObject(), addr);
-	return Confidence<size_t>(result.value, result.confidence);
+	BNOffsetWithConfidence result = BNGetCallStackAdjustment(m_object, arch->GetObject(), addr);
+	return Confidence<int64_t>(result.value, result.confidence);
 }
 
 
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