1 files changed, 129 insertions, 0 deletions
diff --git a/core/vm/memory_table.go b/core/vm/memory_table.go
new file mode 100644
index 0000000..047f610
--- /dev/null
+++ b/core/vm/memory_table.go
@@ -0,0 +1,129 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+func memorySha3(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(1))
+}
+
+func memoryCallDataCopy(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(2))
+}
+
+func memoryReturnDataCopy(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(2))
+}
+
+func memoryCodeCopy(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(2))
+}
+
+func memoryExtCodeCopy(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(1), stack.Back(3))
+}
+
+func memoryMLoad(stack *Stack) (uint64, bool) {
+	return calcMemSize64WithUint(stack.Back(0), 32)
+}
+
+func memoryMStore8(stack *Stack) (uint64, bool) {
+	return calcMemSize64WithUint(stack.Back(0), 1)
+}
+
+func memoryMStore(stack *Stack) (uint64, bool) {
+	return calcMemSize64WithUint(stack.Back(0), 32)
+}
+
+func memoryCreate(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(1), stack.Back(2))
+}
+
+func memoryCreate2(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(1), stack.Back(2))
+}
+
+func memoryCall(stack *Stack) (uint64, bool) {
+	x, overflow := calcMemSize64(stack.Back(5), stack.Back(6))
+	if overflow {
+		return 0, true
+	}
+	y, overflow := calcMemSize64(stack.Back(3), stack.Back(4))
+	if overflow {
+		return 0, true
+	}
+	if x > y {
+		return x, false
+	}
+	return y, false
+}
+
+func memoryCallExpert(stack *Stack) (uint64, bool) {
+	x, overflow := calcMemSize64(stack.Back(7), stack.Back(8))
+	if overflow {
+		return 0, true
+	}
+	y, overflow := calcMemSize64(stack.Back(5), stack.Back(6))
+	if overflow {
+		return 0, true
+	}
+	if x > y {
+		return x, false
+	}
+	return y, false
+}
+
+func memoryDelegateCall(stack *Stack) (uint64, bool) {
+	x, overflow := calcMemSize64(stack.Back(4), stack.Back(5))
+	if overflow {
+		return 0, true
+	}
+	y, overflow := calcMemSize64(stack.Back(2), stack.Back(3))
+	if overflow {
+		return 0, true
+	}
+	if x > y {
+		return x, false
+	}
+	return y, false
+}
+
+func memoryStaticCall(stack *Stack) (uint64, bool) {
+	x, overflow := calcMemSize64(stack.Back(4), stack.Back(5))
+	if overflow {
+		return 0, true
+	}
+	y, overflow := calcMemSize64(stack.Back(2), stack.Back(3))
+	if overflow {
+		return 0, true
+	}
+	if x > y {
+		return x, false
+	}
+	return y, false
+}
+
+func memoryReturn(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(1))
+}
+
+func memoryRevert(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(1))
+}
+
+func memoryLog(stack *Stack) (uint64, bool) {
+	return calcMemSize64(stack.Back(0), stack.Back(1))
+}