added comments for _TLOAD_TEST_PAYLOAD.

ProjectOpenSea · Mar 12, 2024 · e288444 · e288444
1 parent 8029a81
commit e288444
Showing 1 changed file with 17 additions and 1 deletion.
diff --git a/src/types/lib/ConsiderationConstants.sol b/src/types/lib/ConsiderationConstants.sol
@@ -51,7 +51,23 @@ uint256 constant information_length = 0xa0;
 
 // uint256(uint32(bytes4(keccak256("_REENTRANCY_GUARD_SLOT"))))
 uint256 constant _REENTRANCY_GUARD_SLOT = 0x929eee14;
-uint256 constant _TLOAD_TEST_PAYLOAD = 0x6002601e613d5c3d52f3;
+
+/*
+ *
+ * --------------------------------------------------------------------------+
+ * Opcode      | Mnemonic         | Stack               | Memory             |
+ * --------------------------------------------------------------------------|
+ * 60 0x02     | PUSH1 0x02       | 0x02                |                    |
+ * 60 0x1e     | PUSH1 0x1e       | 0x1e 0x02           |                    |
+ * 61 0x3d5c   | PUSH2 0x3d5c     | 0x3d5c 0x1e 0x02    |                    |
+ * 3d          | RETURNDATASIZE   | 0 0x3d5c 0x1e 0x02  |                    |
+ *                                                                           |
+ * ::: store deployed bytecode in memory: (3d) RETURNDATASIZE (5c) TLOAD ::: |
+ * 52          | MSTORE           | 0x1e 0x02           | [0..0x20): 0x3d5c  |
+ * f3          | RETURN           |                     | [0..0x20): 0x3d5c  |
+ * --------------------------------------------------------------------------+
+ */
+uint256 constant _TLOAD_TEST_PAYLOAD = 0x6002_601e_613d5c_3d_52_f3;
 uint256 constant _TLOAD_TEST_PAYLOAD_LENGTH = 0x0a;
 uint256 constant _TLOAD_TEST_PAYLOAD_OFFSET = 0x16;
 uint256 constant _NOT_ENTERED_TSTORE = 0;