Round up allocations to multiples of 32.

2023-10-03 13:03:40 +00:00 · 2021-01-14 21:52:17 +00:00
parent 31ee06d945
commit db4b39e09e
20 changed files with 86 additions and 58 deletions
@@ -43,7 +43,7 @@ object \"C_7\" {
            function allocateMemory(size) -> memPtr
            {
                memPtr := mload(64)
-                let newFreePtr := add(memPtr, size)
+                let newFreePtr := add(memPtr, round_up_to_mul_of_32(size))
                if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }
                mstore(64, newFreePtr)
            }
@@ -55,6 +55,10 @@ object \"C_7\" {
                mstore(4, 0x41)
                revert(0, 0x24)
            }
+            function round_up_to_mul_of_32(value) -> result
+            {
+                result := and(add(value, 31), not(31))
+            }
            function shift_right_224_unsigned(value) -> newValue
            { newValue := shr(224, value) }
        }