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wazevo: adds support for DWARF based stack trace (#1734)

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Signed-off-by: Takeshi Yoneda <t.y.mathetake@gmail.com>
This commit is contained in:
Takeshi Yoneda
2023-09-25 10:54:19 +09:00
committed by GitHub
parent 3b8b3fba65
commit 09da2e94b2
16 changed files with 340 additions and 167 deletions
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15
internal/engine/wazevo/call_engine.go
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@@ -134,8 +134,12 @@ func (c *callEngine) addFrame(builder wasmdebug.ErrorBuilder, addr uintptr) (def
if cm != nil {
index := cm.functionIndexOf(addr)
def = cm.module.FunctionDefinition(cm.module.ImportFunctionCount + index)
// TODO: DWARF.
builder.AddFrame(def.DebugName(), def.ParamTypes(), def.ResultTypes(), nil)
var sources []string
if dw := cm.module.DWARFLines; dw != nil {
sourceOffset := cm.getSourceOffset(addr)
sources = dw.Line(sourceOffset)
}
builder.AddFrame(def.DebugName(), def.ParamTypes(), def.ResultTypes(), sources)
if len(cm.listeners) > 0 {
listener = cm.listeners[index]
}
@@ -485,7 +489,8 @@ func (si *stackIterator) Definition() api.FunctionDefinition {
}
// SourceOffsetForPC implements the same method as documented on experimental.InternalFunction.
func (si *stackIterator) SourceOffsetForPC(experimental.ProgramCounter) uint64 {
// TODO: DWARF.
return 0
func (si *stackIterator) SourceOffsetForPC(pc experimental.ProgramCounter) uint64 {
upc := uintptr(pc)
cm := si.eng.compiledModuleOfAddr(upc)
return cm.getSourceOffset(upc)
}