github.com/wasilibs/wazerox@v0.0.0-20240124024944-4923be63ab5f/internal/engine/wazevo/wazevoapi/exitcode.go (about)

     1  package wazevoapi
     2  
     3  // ExitCode is an exit code of an execution of a function.
     4  type ExitCode uint32
     5  
     6  const (
     7  	ExitCodeOK ExitCode = iota
     8  	ExitCodeGrowStack
     9  	ExitCodeGrowMemory
    10  	ExitCodeUnreachable
    11  	ExitCodeMemoryOutOfBounds
    12  	// ExitCodeCallGoModuleFunction is an exit code for a call to an api.GoModuleFunction.
    13  	ExitCodeCallGoModuleFunction
    14  	// ExitCodeCallGoFunction is an exit code for a call to an api.GoFunction.
    15  	ExitCodeCallGoFunction
    16  	ExitCodeTableOutOfBounds
    17  	ExitCodeIndirectCallNullPointer
    18  	ExitCodeIndirectCallTypeMismatch
    19  	ExitCodeIntegerDivisionByZero
    20  	ExitCodeIntegerOverflow
    21  	ExitCodeInvalidConversionToInteger
    22  	ExitCodeCheckModuleExitCode
    23  	ExitCodeCallListenerBefore
    24  	ExitCodeCallListenerAfter
    25  	ExitCodeCallGoModuleFunctionWithListener
    26  	ExitCodeCallGoFunctionWithListener
    27  	ExitCodeTableGrow
    28  	ExitCodeRefFunc
    29  	exitCodeMax
    30  )
    31  
    32  const ExitCodeMask = 0xff
    33  
    34  // String implements fmt.Stringer.
    35  func (e ExitCode) String() string {
    36  	switch e {
    37  	case ExitCodeOK:
    38  		return "ok"
    39  	case ExitCodeGrowStack:
    40  		return "grow_stack"
    41  	case ExitCodeCallGoModuleFunction:
    42  		return "call_go_module_function"
    43  	case ExitCodeCallGoFunction:
    44  		return "call_go_function"
    45  	case ExitCodeUnreachable:
    46  		return "unreachable"
    47  	case ExitCodeMemoryOutOfBounds:
    48  		return "memory_out_of_bounds"
    49  	case ExitCodeTableOutOfBounds:
    50  		return "table_out_of_bounds"
    51  	case ExitCodeIndirectCallNullPointer:
    52  		return "indirect_call_null_pointer"
    53  	case ExitCodeIndirectCallTypeMismatch:
    54  		return "indirect_call_type_mismatch"
    55  	case ExitCodeIntegerDivisionByZero:
    56  		return "integer_division_by_zero"
    57  	case ExitCodeIntegerOverflow:
    58  		return "integer_overflow"
    59  	case ExitCodeInvalidConversionToInteger:
    60  		return "invalid_conversion_to_integer"
    61  	case ExitCodeCheckModuleExitCode:
    62  		return "check_module_exit_code"
    63  	case ExitCodeCallListenerBefore:
    64  		return "call_listener_before"
    65  	case ExitCodeCallListenerAfter:
    66  		return "call_listener_after"
    67  	case ExitCodeCallGoModuleFunctionWithListener:
    68  		return "call_go_module_function_with_listener"
    69  	case ExitCodeCallGoFunctionWithListener:
    70  		return "call_go_function_with_listener"
    71  	case ExitCodeGrowMemory:
    72  		return "grow_memory"
    73  	case ExitCodeTableGrow:
    74  		return "table_grow"
    75  	case ExitCodeRefFunc:
    76  		return "ref_func"
    77  	}
    78  	panic("TODO")
    79  }
    80  
    81  func ExitCodeCallGoModuleFunctionWithIndex(index int, withListener bool) ExitCode {
    82  	if withListener {
    83  		return ExitCodeCallGoModuleFunctionWithListener | ExitCode(index<<8)
    84  	}
    85  	return ExitCodeCallGoModuleFunction | ExitCode(index<<8)
    86  }
    87  
    88  func ExitCodeCallGoFunctionWithIndex(index int, withListener bool) ExitCode {
    89  	if withListener {
    90  		return ExitCodeCallGoFunctionWithListener | ExitCode(index<<8)
    91  	}
    92  	return ExitCodeCallGoFunction | ExitCode(index<<8)
    93  }
    94  
    95  func GoFunctionIndexFromExitCode(exitCode ExitCode) int {
    96  	return int(exitCode >> 8)
    97  }