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| author | Josh Bleecher Snyder <josharian@gmail.com> | 2021-09-22 11:13:20 -0700 |
|---|---|---|
| committer | Josh Bleecher Snyder <josharian@gmail.com> | 2021-09-27 22:19:43 +0000 |
| commit | 45134acbe645665e93cf1d399027d56b44f23299 (patch) | |
| tree | e95d35f2508f439ed64ba08e1e2ee4e1f1c5d0f5 /src/debug | |
| parent | 788731387932e70d4dd951770c046c7eec9f9d96 (diff) | |
| download | go-45134acbe645665e93cf1d399027d56b44f23299.tar.gz go-45134acbe645665e93cf1d399027d56b44f23299.zip | |
debug/gosym: add pcHeader parsing helpers
A subsequent change will duplicate most of case ver116.
Make it easier to read.
Change-Id: I3a93181c7f094b12715b8a618e9efef7a1438a27
Reviewed-on: https://go-review.googlesource.com/c/go/+/351909
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Diffstat (limited to 'src/debug')
| -rw-r--r-- | src/debug/gosym/pclntab.go | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/src/debug/gosym/pclntab.go b/src/debug/gosym/pclntab.go index a72f9847d7..555add67e3 100644 --- a/src/debug/gosym/pclntab.go +++ b/src/debug/gosym/pclntab.go @@ -225,21 +225,23 @@ func (t *LineTable) parsePclnTab() { t.quantum = uint32(t.Data[6]) t.ptrsize = uint32(t.Data[7]) + offset := func(word uint32) uint64 { + return t.uintptr(t.Data[8+word*t.ptrsize:]) + } + data := func(word uint32) []byte { + return t.Data[offset(word):] + } + switch possibleVersion { case ver116: - t.nfunctab = uint32(t.uintptr(t.Data[8:])) - t.nfiletab = uint32(t.uintptr(t.Data[8+t.ptrsize:])) - offset := t.uintptr(t.Data[8+2*t.ptrsize:]) - t.funcnametab = t.Data[offset:] - offset = t.uintptr(t.Data[8+3*t.ptrsize:]) - t.cutab = t.Data[offset:] - offset = t.uintptr(t.Data[8+4*t.ptrsize:]) - t.filetab = t.Data[offset:] - offset = t.uintptr(t.Data[8+5*t.ptrsize:]) - t.pctab = t.Data[offset:] - offset = t.uintptr(t.Data[8+6*t.ptrsize:]) - t.funcdata = t.Data[offset:] - t.functab = t.Data[offset:] + t.nfunctab = uint32(offset(0)) + t.nfiletab = uint32(offset(1)) + t.funcnametab = data(2) + t.cutab = data(3) + t.filetab = data(4) + t.pctab = data(5) + t.funcdata = data(6) + t.functab = data(6) functabsize := t.nfunctab*2*t.ptrsize + t.ptrsize t.functab = t.functab[:functabsize] case ver12: |