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interpreterRun.go
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interpreterRun.go
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// =================================================================================================
// WARNING! This file is auto-generated. Do not hand-edit. Instead, edit interpreterRun.got
// and rerun generate.sh.
// =================================================================================================
package interpreter
import (
"errors"
"fmt"
"math"
"time"
"istio.io/istio/mixer/pkg/attribute"
"istio.io/istio/mixer/pkg/il"
)
func (in *Interpreter) run(fn *il.Function, bag attribute.Bag, step bool) (Result, error) {
var registers [registerCount]uint32
var sp uint32
var ip uint32
var fp uint32
var opstack []uint32
var frames []stackFrame
var heap []interface{}
var hp uint32
strings := in.program.Strings()
body := in.program.ByteCode()
var code uint32
var t1 uint32
var t2 uint32
var t3 uint32
var ti64 int64
var tu64 uint64
var tf64 float64
var tVal interface{}
var tStr string
var tStr2 string
var tDur time.Duration
var tBool bool
var tFound bool
var tErr error
opstack = make([]uint32, opStackSize)
frames = make([]stackFrame, callStackSize)
heap = make([]interface{}, heapSize)
ip = fn.Address
if len(fn.Parameters) != 0 {
tErr = errors.New("init function must have 0 args")
goto RETURN_ERR
}
if step {
copy(registers[:], in.stepper.registers[:])
sp = in.stepper.sp
ip = in.stepper.ip
fp = in.stepper.fp
copy(opstack, in.stepper.opstack)
copy(frames, in.stepper.frames)
copy(heap, in.stepper.heap)
hp = in.stepper.hp
}
for {
code = body[ip]
ip++
switch il.Opcode(code) {
case il.Halt:
tErr = errors.New("catching fire as instructed")
goto RETURN_ERR
case il.Nop:
case il.Err:
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tErr = errors.New(tStr)
goto RETURN_ERR
case il.Errz:
if sp < 1 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
sp--
t2 = opstack[sp]
if t2 == 0 {
tStr = strings.GetString(t1)
tErr = errors.New(tStr)
goto RETURN_ERR
}
case il.Errnz:
if sp < 1 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
sp--
t2 = opstack[sp]
if t2 != 0 {
tStr = strings.GetString(t1)
tErr = errors.New(tStr)
goto RETURN_ERR
}
case il.PopS, il.PopB:
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
case il.PopI, il.PopD:
if sp < 2 {
goto STACK_UNDERFLOW
}
sp = sp - 2
case il.DupS, il.DupB:
if sp < 1 {
goto STACK_UNDERFLOW
}
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
opstack[sp] = opstack[sp-1]
sp++
case il.DupI, il.DupD:
if sp < 2 {
goto STACK_UNDERFLOW
}
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
opstack[sp] = opstack[sp-2]
opstack[sp+1] = opstack[sp-1]
sp += 2
case il.RLoadS, il.RLoadB:
if sp < 1 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
sp--
registers[t1] = opstack[sp]
case il.RLoadI, il.RLoadD:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
registers[t1] = opstack[sp-1]
registers[t1+1] = opstack[sp-2]
sp = sp - 2
case il.ALoadS:
t1 = body[ip]
ip++
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = strings.GetString(t1)
hp++
registers[t1] = t2
case il.ALoadB:
t1 = body[ip]
ip++
registers[t1] = body[ip]
ip++
case il.ALoadI, il.ALoadD:
t1 = body[ip]
ip++
registers[t1] = body[ip]
registers[t1+1] = body[ip+1]
ip = ip + 2
case il.RPushS, il.RPushB:
t1 = body[ip]
ip++
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
opstack[sp] = registers[t1]
sp++
case il.RPushI, il.RPushD:
t1 = body[ip]
ip++
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
opstack[sp] = registers[t1+1]
opstack[sp+1] = registers[t1]
sp = sp + 2
case il.APushS:
t1 = body[ip]
ip++
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = strings.GetString(t1)
hp++
opstack[sp] = t2
sp++
case il.APushB:
t1 = body[ip]
ip++
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
opstack[sp] = t1
sp++
case il.APushI, il.APushD:
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
opstack[sp] = t2
opstack[sp+1] = t1
sp = sp + 2
case il.EqS:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if t1 >= hp {
goto INVALID_HEAP_ACCESS
}
tStr = heap[t1].(string)
if t2 >= hp {
goto INVALID_HEAP_ACCESS
}
tStr2 = heap[t2].(string)
if tStr == tStr2 {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.EqB:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if t1 == t2 {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.EqI, il.EqD:
if sp < 4 {
goto STACK_UNDERFLOW
}
if opstack[sp-1] == opstack[sp-3] && opstack[sp-2] == opstack[sp-4] {
sp -= 4
opstack[sp] = 1
sp++
} else {
sp -= 4
opstack[sp] = 0
sp++
}
case il.AEqS:
t1 = body[ip]
ip++
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
t2 = opstack[sp]
if t2 >= hp {
goto INVALID_HEAP_ACCESS
}
tStr = heap[t2].(string)
if strings.GetString(t1) == tStr {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.AEqB:
t1 = body[ip]
ip++
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
t2 = opstack[sp]
if t1 == t2 {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.AEqI, il.AEqD:
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
if sp < 2 {
goto STACK_UNDERFLOW
}
if opstack[sp-1] == t1 && opstack[sp-2] == t2 {
sp = sp - 2
opstack[sp] = 1
sp++
} else {
sp = sp - 2
opstack[sp] = 0
sp++
}
case il.Xor:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if (t1 == 0 && t2 == 0) || (t1 != 0 && t2 != 0) {
opstack[sp] = 0
sp++
} else {
opstack[sp] = 1
sp++
}
case il.And:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if t1 != 0 && t2 != 0 {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.Or:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if t1 == 0 && t2 == 0 {
opstack[sp] = 0
sp++
} else {
opstack[sp] = 1
sp++
}
case il.AXor:
t1 = body[ip]
ip++
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
t2 = opstack[sp]
if (t1 == 0 && t2 == 0) || (t1 != 0 && t2 != 0) {
opstack[sp] = 0
sp++
} else {
opstack[sp] = 1
sp++
}
case il.AAnd:
t1 = body[ip]
ip++
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
t2 = opstack[sp]
if t1 != 0 && t2 != 0 {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.AOr:
t1 = body[ip]
ip++
if sp < 1 {
goto STACK_UNDERFLOW
}
sp--
t2 = opstack[sp]
if t1 == 0 && t2 == 0 {
opstack[sp] = 0
sp++
} else {
opstack[sp] = 1
sp++
}
case il.Not:
if sp < 1 {
goto STACK_UNDERFLOW
}
if opstack[sp-1] == 0 {
opstack[sp-1] = 1
} else {
opstack[sp-1] = 0
}
case il.ResolveS:
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
tErr = fmt.Errorf("lookup failed: '%v'", tStr)
goto RETURN_ERR
}
tStr, tFound = tVal.(string)
if !tFound {
tErr = fmt.Errorf("error converting value to string: '%v'", tVal)
goto RETURN_ERR
}
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = tStr
hp++
opstack[sp] = t2
sp++
case il.ResolveB:
if sp > opStackSize-1 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
tErr = fmt.Errorf("lookup failed: '%v'", tStr)
goto RETURN_ERR
}
tBool, tFound = tVal.(bool)
if !tFound {
tErr = fmt.Errorf("error converting value to bool: '%v'", tVal)
goto RETURN_ERR
}
if tBool {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
case il.ResolveI:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
tErr = fmt.Errorf("lookup failed: '%v'", tStr)
goto RETURN_ERR
}
ti64, tFound = tVal.(int64)
if !tFound {
tDur, tFound = tVal.(time.Duration)
if !tFound {
tErr = fmt.Errorf("error converting value to integer or duration: '%v'", tVal)
goto RETURN_ERR
}
ti64 = int64(tDur)
}
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
case il.ResolveD:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
tErr = fmt.Errorf("lookup failed: '%v'", tStr)
goto RETURN_ERR
}
tf64, tFound = tVal.(float64)
if !tFound {
tErr = fmt.Errorf("error converting value to double: '%v'", tVal)
goto RETURN_ERR
}
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
case il.ResolveF:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
tErr = fmt.Errorf("lookup failed: '%v'", tStr)
goto RETURN_ERR
}
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = tVal
hp++
opstack[sp] = t2
sp++
case il.TResolveS:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
opstack[sp] = 0
sp++
} else {
tStr, tFound = tVal.(string)
if !tFound {
tErr = fmt.Errorf("error converting value to string: '%v'", tVal)
goto RETURN_ERR
}
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = tStr
hp++
opstack[sp] = t2
sp++
opstack[sp] = 1
sp++
}
case il.TResolveB:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
opstack[sp] = 0
sp++
} else {
tBool, tFound = tVal.(bool)
if !tFound {
tErr = fmt.Errorf("error converting value to bool: '%v'", tVal)
goto RETURN_ERR
}
if tBool {
opstack[sp] = 1
sp++
} else {
opstack[sp] = 0
sp++
}
opstack[sp] = 1
sp++
}
case il.TResolveI:
if sp > opStackSize-3 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
opstack[sp] = 0
sp++
} else {
ti64, tFound = tVal.(int64)
if !tFound {
tDur, tFound = tVal.(time.Duration)
if !tFound {
tErr = fmt.Errorf("error converting value to integer or duration: '%v'", tVal)
goto RETURN_ERR
}
ti64 = int64(tDur)
}
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
opstack[sp] = 1
sp++
}
case il.TResolveD:
if sp > opStackSize-3 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
opstack[sp] = 0
sp++
} else {
tf64, tFound = tVal.(float64)
if !tFound {
tErr = fmt.Errorf("error converting value to double: '%v'", tVal)
goto RETURN_ERR
}
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
opstack[sp] = 1
sp++
}
case il.TResolveF:
if sp > opStackSize-2 {
goto STACK_OVERFLOW
}
t1 = body[ip]
ip++
tStr = strings.GetString(t1)
tVal, tFound = bag.Get(tStr)
if !tFound {
opstack[sp] = 0
sp++
} else {
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}
t2 = hp
heap[hp] = tVal
hp++
opstack[sp] = t2
sp++
opstack[sp] = 1
sp++
}
case il.AddI:
if sp < 4 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 = int64(t1) + int64(t2)<<32
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 += int64(t1) + int64(t2)<<32
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
case il.SubI:
if sp < 4 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 = int64(t1) + int64(t2)<<32
ti64 *= -1
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 += int64(t1) + int64(t2)<<32
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
case il.AAddI:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
ti64 = int64(t1) + int64(t2)<<32
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 += int64(t1) + int64(t2)<<32
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
case il.ASubI:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
ti64 = int64(t1) + int64(t2)<<32
ti64 *= -1
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
ti64 += int64(t1) + int64(t2)<<32
opstack[sp] = uint32(ti64 >> 32)
opstack[sp+1] = uint32(ti64 & 0xFFFFFFFF)
sp = sp + 2
case il.AddD:
if sp < 4 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 = math.Float64frombits(uint64(t1) + uint64(t2)<<32)
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 += math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
case il.SubD:
if sp < 4 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 = math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tf64 *= -1
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 += math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
case il.AAddD:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
tf64 = math.Float64frombits(uint64(t1) + uint64(t2)<<32)
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 += math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
case il.ASubD:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
t2 = body[ip+1]
ip = ip + 2
tf64 = math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tf64 *= -1
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
tf64 += math.Float64frombits(uint64(t1) + uint64(t2)<<32)
tu64 = math.Float64bits(tf64)
opstack[sp] = uint32(tu64 >> 32)
opstack[sp+1] = uint32(tu64 & 0xFFFFFFFF)
sp = sp + 2
case il.Jmp:
t1 = body[ip]
ip++
ip = t1
case il.Jz:
if sp < 1 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
sp--
t2 = opstack[sp]
if t2 == 0 {
ip = t1
}
case il.Jnz:
if sp < 1 {
goto STACK_UNDERFLOW
}
t1 = body[ip]
ip++
sp--
t2 = opstack[sp]
if t2 != 0 {
ip = t1
}
case il.Call:
t1 = body[ip]
ip++
frames[fp].save(®isters, sp-typesStackAllocSize(fn.Parameters), ip, fn)
fp++
fn2 := in.program.Functions.GetByID(t1)
if fn2 == nil {
tErr = fmt.Errorf("function not found: '%s'", strings.GetString(t1))
goto RETURN_ERR
}
if fn2.Address == 0 {
fp--
ext := in.externs[strings.GetString(t1)]
t2 = typesStackAllocSize(fn2.Parameters)
if sp < t2 {
goto STACK_UNDERFLOW
}
t1, t3, tErr = ext.invoke(strings, heap, &hp, opstack, sp)
if tErr != nil {
goto RETURN_ERR
}
opstack[sp-t2] = t1
opstack[sp-t2+1] = t3
sp -= t2 - typeStackAllocSize(fn2.ReturnType)
break
}
ip = fn2.Address
case il.Ret:
if fp == 0 {
r := Result{
t: fn.ReturnType,
}
switch fn.ReturnType {
case il.Void, il.Integer, il.Double, il.Bool, il.Duration:
switch typeStackAllocSize(fn.ReturnType) {
case 0:
case 1:
if sp < 1 {
goto STACK_UNDERFLOW
}
r.v1 = opstack[sp-1]
case 2:
if sp < 2 {
goto STACK_UNDERFLOW
}
r.v1 = opstack[sp-1]
r.v2 = opstack[sp-2]
default:
panic("interpreter.run: unhandled parameter size")
}
case il.String:
if sp < 1 {
goto STACK_UNDERFLOW
}
r.v1 = opstack[sp-1]
if r.v1 >= hp {
goto INVALID_HEAP_ACCESS
}
r.vs = heap[r.v1].(string)
case il.Interface:
if sp < 1 {
goto STACK_UNDERFLOW
}
r.v1 = opstack[sp-1]
r.vi = heap[r.v1]
default:
panic("interpreter.run: unhandled return type")
}
if step {
copy(in.stepper.registers[:], registers[:])
in.stepper.sp = sp
in.stepper.ip = ip
in.stepper.fp = fp
copy(in.stepper.opstack, opstack)
copy(in.stepper.frames, frames)
copy(in.stepper.heap, heap)
in.stepper.hp = hp
in.stepper.completed = true
}
return r, nil
}
t1 = typeStackAllocSize(fn.ReturnType)
t2 = sp
fp--
frames[fp].restore(®isters, &sp, &ip, &fn)
for t3 = 0; t3 < t1; t3++ {
opstack[sp+t3] = opstack[t2-t1+t3]
}
sp += t1
case il.TLookup:
if sp < 2 {
goto STACK_UNDERFLOW
}
t1 = opstack[sp-1]
t2 = opstack[sp-2]
sp = sp - 2
if t1 >= hp {
goto INVALID_HEAP_ACCESS
}
tStr = heap[t1].(string)
if t2 >= hp {
goto INVALID_HEAP_ACCESS
}
tVal = heap[t2]
tStr, tFound = il.MapGet(tVal, tStr)
if tFound {
if hp == heapSize-1 {
goto HEAP_OVERFLOW
}