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| author | Ian Lance Taylor <iant@golang.org> | 2015-12-21 22:27:01 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2015-12-24 17:00:04 +0000 |
| commit | f7e51c132059a78953b768ca66e457b40985930e (patch) | |
| tree | e83f12442cc839b5f2d80c14c3b7131666bc9746 /src/runtime/sys_darwin_arm64.s | |
| parent | e4dcf5c8c22d98ac9eac7b9b226596229624cb1d (diff) | |
| download | go-git-f7e51c132059a78953b768ca66e457b40985930e.tar.gz | |
runtime: adjust gsignal stack to current signal stack
If non-Go code calls sigaltstack before a signal is received, use
sigaltstack to determine the current signal stack and set the gsignal
stack to use it. This makes the Go runtime more robust in the face of
non-Go code. We still can't handle a disabled signal stack or a signal
triggered with SA_ONSTACK clear, but we now give clear errors for those
cases.
Fixes #7227.
Update #9896.
Change-Id: Icb1607e01fd6461019b6d77d940e59b3aed4d258
Reviewed-on: https://go-review.googlesource.com/18102
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Diffstat (limited to 'src/runtime/sys_darwin_arm64.s')
| -rw-r--r-- | src/runtime/sys_darwin_arm64.s | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/runtime/sys_darwin_arm64.s b/src/runtime/sys_darwin_arm64.s index 145674d844..d0034d5a33 100644 --- a/src/runtime/sys_darwin_arm64.s +++ b/src/runtime/sys_darwin_arm64.s @@ -180,6 +180,14 @@ TEXT runtime·nanotime(SB),NOSPLIT,$40 MOVD R0, ret+0(FP) RET +TEXT runtime·sigfwd(SB),NOSPLIT,$0-32 + MOVW sig+8(FP), R0 + MOVD info+16(FP), R1 + MOVD ctx+24(FP), R2 + MOVD fn+0(FP), R11 + BL (R11) + RET + // Sigtramp's job is to call the actual signal handler. // It is called with the following arguments on the stack: // LR "return address" - ignored |