PenaDevops/delve
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Update documentation

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This commit is contained in:
Derek Parker 2015-03-02 18:06:04 -06:00
parent 0726aec193
commit d4d8f1ce58
1 changed files with 7 additions and 0 deletions
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7
dwarf/frame/entries.go
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@ -18,6 +18,8 @@ type CommonInformationEntry struct {
InitialInstructions []byte
}
// Returns whether or not the given address is within the
// bounds of this frame.
func (fde *FrameDescriptionEntry) Cover(addr uint64) bool {
if (addr - fde.begin) < fde.end {
return true
@ -34,18 +36,22 @@ type FrameDescriptionEntry struct {
begin, end uint64
}
// Address of first location for this frame.
func (fde *FrameDescriptionEntry) Begin() uint64 {
return fde.begin
}
// Address of last location for this frame.
func (fde *FrameDescriptionEntry) End() uint64 {
return fde.begin + fde.end
}
// Set up frame for the given PC.
func (fde *FrameDescriptionEntry) EstablishFrame(pc uint64) *FrameContext {
return executeDwarfProgramUntilPC(fde, pc)
}
// Return the offset from the current SP that the return address is stored at.
func (fde *FrameDescriptionEntry) ReturnAddressOffset(pc uint64) int64 {
frame := fde.EstablishFrame(pc)
return frame.cfa.offset + frame.regs[fde.CIE.ReturnAddressRegister].offset
@ -57,6 +63,7 @@ func NewFrameIndex() FrameDescriptionEntries {
return make(FrameDescriptionEntries, 0, 1000)
}
// Returns the Frame Description Entry for the given PC.
func (fdes FrameDescriptionEntries) FDEForPC(pc uint64) (*FrameDescriptionEntry, error) {
idx := sort.Search(len(fdes), func(i int) bool {
if fdes[i].Cover(pc) {