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runtime: framepointers are no longer an experiment - hard code them

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I think they are no longer experimental status. Might as well promote
them to permanent.

Change-Id: Id1259601b3dd2061dd60df86ee48080bfb575d2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/249857
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Keith Randall 2020-08-21 11:09:45 -07:00
parent 29634436fd
commit 5c2c6d3fbf
14 changed files with 28 additions and 51 deletions
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6
src/runtime/stack.go
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@ -648,12 +648,8 @@ func adjustframe(frame *stkframe, arg unsafe.Pointer) bool {
}
// Adjust saved base pointer if there is one.
// TODO what about arm64 frame pointer adjustment?
if sys.ArchFamily == sys.AMD64 && frame.argp-frame.varp == 2*sys.RegSize {
if !framepointer_enabled {
print("runtime: found space for saved base pointer, but no framepointer experiment\n")
print("argp=", hex(frame.argp), " varp=", hex(frame.varp), "\n")
throw("bad frame layout")
}
if stackDebug >= 3 {
print(" saved bp\n")
}