cerc-io/go-ethereum
13
0
Fork 0
Code Issues 9 Pull Requests Packages Projects Releases 66 Wiki Activity

cmd/disasm: fix array-out-of-bounds error (#3491)

Browse Source
This commit is contained in:
Valentin Wüstholz 2017-01-08 01:18:22 +01:00 committed by Felix Lange
parent 17182732f5
commit 0a5450fe04
1 changed files with 8 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
cmd/disasm/main.go
View File

@ -42,15 +42,19 @@ func main() {
for pc := uint64(0); pc < uint64(len(code)); pc++ { for pc := uint64(0); pc < uint64(len(code)); pc++ {
op := vm.OpCode(code[pc]) op := vm.OpCode(code[pc])
fmt.Printf("%-5d %v", pc, op)
switch op { switch op {
case vm.PUSH1, vm.PUSH2, vm.PUSH3, vm.PUSH4, vm.PUSH5, vm.PUSH6, vm.PUSH7, vm.PUSH8, vm.PUSH9, vm.PUSH10, vm.PUSH11, vm.PUSH12, vm.PUSH13, vm.PUSH14, vm.PUSH15, vm.PUSH16, vm.PUSH17, vm.PUSH18, vm.PUSH19, vm.PUSH20, vm.PUSH21, vm.PUSH22, vm.PUSH23, vm.PUSH24, vm.PUSH25, vm.PUSH26, vm.PUSH27, vm.PUSH28, vm.PUSH29, vm.PUSH30, vm.PUSH31, vm.PUSH32: case vm.PUSH1, vm.PUSH2, vm.PUSH3, vm.PUSH4, vm.PUSH5, vm.PUSH6, vm.PUSH7, vm.PUSH8, vm.PUSH9, vm.PUSH10, vm.PUSH11, vm.PUSH12, vm.PUSH13, vm.PUSH14, vm.PUSH15, vm.PUSH16, vm.PUSH17, vm.PUSH18, vm.PUSH19, vm.PUSH20, vm.PUSH21, vm.PUSH22, vm.PUSH23, vm.PUSH24, vm.PUSH25, vm.PUSH26, vm.PUSH27, vm.PUSH28, vm.PUSH29, vm.PUSH30, vm.PUSH31, vm.PUSH32:
a := uint64(op) - uint64(vm.PUSH1) + 1 a := uint64(op) - uint64(vm.PUSH1) + 1
fmt.Printf(" => %x", code[pc+1:pc+1+a]) u := pc + 1 + a
if uint64(len(code)) <= pc || uint64(len(code)) < u {
fmt.Printf("Error: incomplete push instruction at %v\n", pc)
return
}
fmt.Printf("%-5d %v => %x\n", pc, op, code[pc+1:u])
pc += a pc += a
default:
fmt.Printf("%-5d %v\n", pc, op)
} }
fmt.Println()
} }
} }