diff options
Diffstat (limited to 'src/cmd/internal/obj/s390x/objz.go')
| -rw-r--r-- | src/cmd/internal/obj/s390x/objz.go | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/cmd/internal/obj/s390x/objz.go b/src/cmd/internal/obj/s390x/objz.go index 970cf827d6..a02c4fc17f 100644 --- a/src/cmd/internal/obj/s390x/objz.go +++ b/src/cmd/internal/obj/s390x/objz.go @@ -33,6 +33,7 @@ import ( "cmd/internal/obj" "cmd/internal/objabi" "cmd/internal/sys" + "log" "math" ) @@ -545,6 +546,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) { p.From.Reg = REGSP } } + + if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 { + f := c.cursym.Func() + if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 { + c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE + if ctxt.Debugvlog || !ctxt.IsAsm { + ctxt.Logf("auto-SPWRITE: %s\n", c.cursym.Name) + if !ctxt.IsAsm { + ctxt.Diag("invalid auto-SPWRITE in non-assembly") + ctxt.DiagFlush() + log.Fatalf("bad SPWRITE") + } + } + } + } } if wasSplit { c.stacksplitPost(pLast, pPre, pPreempt, autosize) // emit post part of split check |