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dwarf/line: implement missing DW_LNS_set_isa opcode (#1676)

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Alessandro Arzilli 2019-08-27 23:27:15 +02:00 committed by Derek Parker
parent a3e884e55c
commit 0c36cfb9b1
1 changed files with 9 additions and 0 deletions
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9
pkg/dwarf/line/state_machine.go
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@ -24,6 +24,7 @@ type StateMachine struct {
address uint64
column uint
isStmt bool
isa uint64 // instruction set architecture register (DWARFv4)
basicBlock bool
endSeq bool
lastDelta int
@ -70,6 +71,7 @@ const (
DW_LNS_fixed_advance_pc = 9
DW_LNS_prologue_end = 10
DW_LNS_epilogue_begin = 11
DW_LNS_set_isa = 12
)
// Extended opcodes
@ -91,6 +93,7 @@ var standardopcodes = map[byte]opcodefn{
DW_LNS_fixed_advance_pc: fixedadvancepc,
DW_LNS_prologue_end: prologueend,
DW_LNS_epilogue_begin: epiloguebegin,
DW_LNS_set_isa: setisa,
}
var extendedopcodes = map[byte]opcodefn{
@ -354,6 +357,7 @@ func (sm *StateMachine) next() error {
sm.file = sm.dbl.FileNames[0].Path
sm.line = 1
sm.column = 0
sm.isa = 0
sm.isStmt = sm.dbl.Prologue.InitialIsStmt == uint8(1)
sm.basicBlock = false
}
@ -478,3 +482,8 @@ func prologueend(sm *StateMachine, buf *bytes.Buffer) {
func epiloguebegin(sm *StateMachine, buf *bytes.Buffer) {
sm.epilogueBegin = true
}
func setisa(sm *StateMachine, buf *bytes.Buffer) {
c, _ := util.DecodeULEB128(buf)
sm.isa = c
}