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go/misc/cgo
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Michael Hudson-Doyle 26849746c9 cmd/internal/obj, runtime: fixes for defer in 386 shared libraries 
Any defer in a shared object crashed when GOARCH=386. This turns out to be two
bugs:

 1) Calls to morestack were not processed to be PIC safe (must have been
    possible to trigger this another way too)
 2) jmpdefer needs to rewind the return address of the deferred function past
    the instructions that load the GOT pointer into BX, not just past the call

Bug 2) requires re-introducing the a way for .s files to know when they are
being compiled for dynamic linking but I've tried to do that in as minimal
a way as possible.

Fixes #15916

Change-Id: Ia0d09b69ec272a176934176b8eaef5f3bfcacf04
Reviewed-on: https://go-review.googlesource.com/23623
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-06-03 02:50:27 +00:00
..
errors cmd/cgo: remove -O options when generating compiler errors 2016-05-27 01:40:30 +00:00
fortran misc/cgo/fortran: fix gfortran compile test 2016-05-04 15:08:16 +00:00
gmp all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
life all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
nocgo
stdio all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
test misc/cgo/test: fix issue9400 test on android/386 2016-06-02 14:01:47 +00:00
testasan
testcarchive cmd/go: add -shared to darwin/arm{,64} default build mode 2016-05-07 18:58:39 +00:00
testcshared all: fix spelling mistakes 2016-04-03 17:03:15 +00:00
testgodefs all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
testsanitizers runtime/cgo: add TSAN acquire/release calls 2016-05-31 20:53:16 +00:00
testshared cmd/internal/obj, runtime: fixes for defer in 386 shared libraries 2016-06-03 02:50:27 +00:00
testsigfwd runtime: for c-archive/c-shared, don't install unnecessary signal handlers 2015-12-18 22:27:38 +00:00
testso cmd/dist: convert testso test into Go 2015-06-12 04:33:50 +00:00
testsovar misc/cgo/testsovar: needs the extern keyword to export variables on non-windows platforms 2015-07-21 18:10:57 +00:00
testtls all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00