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| author | Akshat Kumar <seed@mail.nanosouffle.net> | 2013-01-30 02:53:56 -0800 |
|---|---|---|
| committer | Akshat Kumar <seed@mail.nanosouffle.net> | 2013-01-30 02:53:56 -0800 |
| commit | e9b6b2104e0e56783d08dd82ceb0d2b2c1859cb9 (patch) | |
| tree | db2b169d396281a8203a2ec654583c4c9028f9b0 /src/cmd/dist/buildruntime.c | |
| parent | 56ed4256069e233e18a75da36136a4c2ac624801 (diff) | |
| download | go-e9b6b2104e0e56783d08dd82ceb0d2b2c1859cb9.tar.gz | |
runtime: add support for panic/recover in Plan 9 note handler
This change also resolves some issues with note handling: we now make
sure that there is enough room at the bottom of every goroutine to
execute the note handler, and the `exitstatus' is no longer a global
entity, which resolves some race conditions.
R=rminnich, npe, rsc, ality
CC=golang-dev
https://codereview.appspot.com/6569068
Committer: Anthony Martin <ality@pbrane.org>
Diffstat (limited to 'src/cmd/dist/buildruntime.c')
| -rw-r--r-- | src/cmd/dist/buildruntime.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/cmd/dist/buildruntime.c b/src/cmd/dist/buildruntime.c index 52a69be0f..6c07e2a48 100644 --- a/src/cmd/dist/buildruntime.c +++ b/src/cmd/dist/buildruntime.c @@ -105,9 +105,15 @@ static struct { "#define m(r) 4(r)\n" }, {"386", "plan9", + "// Plan 9 does not have per-process segment descriptors with\n" + "// which to do thread-local storage. Instead, we will use a\n" + "// fixed offset from the per-process TOS struct address for\n" + "// the local storage. Since the process ID is contained in the\n" + "// TOS struct, we specify an offset for that here as well.\n" "#define get_tls(r) MOVL _tos(SB), r \n" "#define g(r) -8(r)\n" "#define m(r) -4(r)\n" + "#define procid(r) 48(r)\n" }, {"386", "linux", "// On Linux systems, what we call 0(GS) and 4(GS) for g and m\n" |