diff options
| author | Aram Hăvărneanu <aram@mgk.ro> | 2014-07-02 21:04:10 +1000 |
|---|---|---|
| committer | Dave Cheney <dave@cheney.net> | 2014-07-02 21:04:10 +1000 |
| commit | decd810945e22642df5db99a616af3cc5d53bf8d (patch) | |
| tree | 6e00d4d3dd2f395c7ec89bf945481c81206325a2 /src/liblink/obj6.c | |
| parent | d7b678b2ca26928390078c29e3f71868e867a182 (diff) | |
| download | go-decd810945e22642df5db99a616af3cc5d53bf8d.tar.xz | |
liblink, runtime: preliminary support for plan9/amd64
A TLS slot is reserved by _rt0_.*_plan9 as an automatic and
its address (which is static on Plan 9) is saved in the
global _privates symbol. The startup linkage now is exactly
like that from Plan 9 libc, and the way we access g is
exactly as if we'd have used privalloc(2).
Aside from making the code more standard, this change
drastically simplifies it, both for 386 and for amd64, and
makes the Plan 9 code in liblink common for both 386 and
amd64.
The amd64 runtime code was cleared of nxm assumptions, and
now runs on the standard Plan 9 kernel.
Note handling fixes will follow in a separate CL.
LGTM=rsc
R=golang-codereviews, rsc, bradfitz, dave
CC=0intro, ality, golang-codereviews, jas, minux.ma, mischief
https://golang.org/cl/101510049
Diffstat (limited to 'src/liblink/obj6.c')
| -rw-r--r-- | src/liblink/obj6.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/liblink/obj6.c b/src/liblink/obj6.c index d83f847851..a8538c9ecf 100644 --- a/src/liblink/obj6.c +++ b/src/liblink/obj6.c @@ -103,7 +103,7 @@ static int canuselocaltls(Link *ctxt) { switch(ctxt->headtype) { -// case Hlinux: + case Hplan9: case Hwindows: return 0; } @@ -402,6 +402,10 @@ addstacksplit(Link *ctxt, LSym *cursym) for(i=0; i<nelem(morename); i++) ctxt->symmorestack[i] = linklookup(ctxt, morename[i], 0); } + + if(ctxt->headtype == Hplan9 && ctxt->plan9privates == nil) + ctxt->plan9privates = linklookup(ctxt, "_privates", 0); + ctxt->cursym = cursym; if(cursym->text == nil || cursym->text->link == nil) |