cannon: Noop SYS_STAT for the mt stf (#12687)

cannon/mipsevm/arch/arch32.go

@@ -61,6 +61,7 @@ const (
 	SysPrlimit64     = 4338
 	SysClose         = 4006
 	SysPread64       = 4200
+	SysStat          = 4106
 	SysFstat         = 4108
 	SysFstat64       = 4215
 	SysOpenAt        = 4288

cannon/mipsevm/arch/arch64.go

@@ -69,6 +69,7 @@ const (
 	SysPrlimit64     = 5297
 	SysClose         = 5003
 	SysPread64       = 5016
+	SysStat          = 5004
 	SysFstat         = 5005
 	SysFstat64       = UndefinedSysNr
 	SysOpenAt        = 5247

cannon/mipsevm/multithreaded/mips.go

@@ -187,6 +187,7 @@ func (m *InstrumentedState) handleSyscall() error {
 	case arch.SysPrlimit64:
 	case arch.SysClose:
 	case arch.SysPread64:
+	case arch.SysStat:
 	case arch.SysFstat:
 	case arch.SysOpenAt:
 	case arch.SysReadlink:

cannon/mipsevm/tests/evm_multithreaded_test.go

@@ -1103,6 +1103,7 @@ var NoopSyscalls = map[string]uint32{
 	"SysPrlimit64":     4338,
 	"SysClose":         4006,
 	"SysPread64":       4200,
+	"SysStat":          4106,
 	"SysFstat":         4108,
 	"SysFstat64":       4215,
 	"SysOpenAt":        4288,

packages/contracts-bedrock/semver-lock.json

@@ -144,8 +144,8 @@
     "sourceCodeHash": "0xd8467700c80b3e62fa37193dc6513bac35282094b686b50e162e157f704dde00"
   },
   "src/cannon/MIPS2.sol": {
-    "initCodeHash": "0x478fdad3eccd158822ce2025971a9242c37c976024f419fba417fe54158269b7",
-    "sourceCodeHash": "0x81dc3329c1644afa30ecd2684f44f8b96b5a17612dcfa6476432eed697209e63"
+    "initCodeHash": "0xaedf0d0b0e94a0c5e7d987331d2fdba84230f5704a6ca33677e70cde7051b17e",
+    "sourceCodeHash": "0x9fa2d1297ad1e93b4d3c5c0fed08bedcd8f746807589f0fd3369e79347c6a027"
   },
   "src/cannon/PreimageOracle.sol": {
     "initCodeHash": "0x5d7e8ae64f802bd9d760e3d52c0a620bd02405dc2c8795818db9183792ffe81c",

packages/contracts-bedrock/src/cannon/MIPS2.sol

@@ -60,8 +60,8 @@ contract MIPS2 is ISemver {
     }
 
     /// @notice The semantic version of the MIPS2 contract.
-    /// @custom:semver 1.0.0-beta.20
-    string public constant version = "1.0.0-beta.20";
+    /// @custom:semver 1.0.0-beta.21
+    string public constant version = "1.0.0-beta.21";
 
     /// @notice The preimage oracle contract.
     IPreimageOracle internal immutable ORACLE;
@@ -555,6 +555,8 @@ contract MIPS2 is ISemver {
                 // ignored
             } else if (syscall_no == sys.SYS_PREAD64) {
                 // ignored
+            } else if (syscall_no == sys.SYS_STAT) {
+                // ignored
             } else if (syscall_no == sys.SYS_FSTAT) {
                 // ignored
             } else if (syscall_no == sys.SYS_OPENAT) {

packages/contracts-bedrock/src/cannon/libraries/MIPSSyscalls.sol

@@ -53,6 +53,7 @@ library MIPSSyscalls {
     uint32 internal constant SYS_PRLIMIT64 = 4338;
     uint32 internal constant SYS_CLOSE = 4006;
     uint32 internal constant SYS_PREAD64 = 4200;
+    uint32 internal constant SYS_STAT = 4106;
     uint32 internal constant SYS_FSTAT = 4108;
     uint32 internal constant SYS_FSTAT64 = 4215;
     uint32 internal constant SYS_OPENAT = 4288;