diff --git a/src/cmd/internal/obj/arm/obj5.go b/src/cmd/internal/obj/arm/obj5.go
index a177e5f75f..c17bf2a8ac 100644
--- a/src/cmd/internal/obj/arm/obj5.go
+++ b/src/cmd/internal/obj/arm/obj5.go
@@ -768,13 +768,7 @@ func (c *ctxt5) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
 	spfix.As = obj.ANOP
 	spfix.Spadj = -framesize
 
-	pcdata := obj.Appendp(spfix, c.newprog)
-	pcdata.Pos = c.cursym.Func.Text.Pos
-	pcdata.As = obj.APCDATA
-	pcdata.From.Type = obj.TYPE_CONST
-	pcdata.From.Offset = objabi.PCDATA_StackMapIndex
-	pcdata.To.Type = obj.TYPE_CONST
-	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+	pcdata := c.ctxt.EmitEntryLiveness(c.cursym, spfix, c.newprog)
 
 	// MOVW	LR, R3
 	movw := obj.Appendp(pcdata, c.newprog)
diff --git a/src/cmd/internal/obj/arm64/obj7.go b/src/cmd/internal/obj/arm64/obj7.go
index 0ea9af2854..0d832387d7 100644
--- a/src/cmd/internal/obj/arm64/obj7.go
+++ b/src/cmd/internal/obj/arm64/obj7.go
@@ -167,13 +167,7 @@ func (c *ctxt7) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
 	spfix.As = obj.ANOP
 	spfix.Spadj = -framesize
 
-	pcdata := obj.Appendp(spfix, c.newprog)
-	pcdata.Pos = c.cursym.Func.Text.Pos
-	pcdata.As = obj.APCDATA
-	pcdata.From.Type = obj.TYPE_CONST
-	pcdata.From.Offset = objabi.PCDATA_StackMapIndex
-	pcdata.To.Type = obj.TYPE_CONST
-	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+	pcdata := c.ctxt.EmitEntryLiveness(c.cursym, spfix, c.newprog)
 
 	// MOV	LR, R3
 	movlr := obj.Appendp(pcdata, c.newprog)
diff --git a/src/cmd/internal/obj/mips/obj0.go b/src/cmd/internal/obj/mips/obj0.go
index 5bbc4ce638..5a2546af9e 100644
--- a/src/cmd/internal/obj/mips/obj0.go
+++ b/src/cmd/internal/obj/mips/obj0.go
@@ -790,6 +790,8 @@ func (c *ctxt0) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
 		p.Mark |= LABEL
 	}
 
+	p = c.ctxt.EmitEntryLiveness(c.cursym, p, c.newprog)
+
 	// JAL	runtime.morestack(SB)
 	p = obj.Appendp(p, c.newprog)
 
diff --git a/src/cmd/internal/obj/plist.go b/src/cmd/internal/obj/plist.go
index 8e70404774..d383d85cab 100644
--- a/src/cmd/internal/obj/plist.go
+++ b/src/cmd/internal/obj/plist.go
@@ -190,3 +190,18 @@ func (ctxt *Link) Globl(s *LSym, size int64, flag int) {
 		s.Type = objabi.STLSBSS
 	}
 }
+
+// EmitEntryLiveness generates PCDATA Progs after p to switch to the
+// liveness map active at the entry of function s. It returns the last
+// Prog generated.
+func (ctxt *Link) EmitEntryLiveness(s *LSym, p *Prog, newprog ProgAlloc) *Prog {
+	pcdata := Appendp(p, newprog)
+	pcdata.Pos = s.Func.Text.Pos
+	pcdata.As = APCDATA
+	pcdata.From.Type = TYPE_CONST
+	pcdata.From.Offset = objabi.PCDATA_StackMapIndex
+	pcdata.To.Type = TYPE_CONST
+	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+
+	return pcdata
+}
diff --git a/src/cmd/internal/obj/ppc64/obj9.go b/src/cmd/internal/obj/ppc64/obj9.go
index c3a9443228..7bb21ab439 100644
--- a/src/cmd/internal/obj/ppc64/obj9.go
+++ b/src/cmd/internal/obj/ppc64/obj9.go
@@ -966,6 +966,8 @@ func (c *ctxt9) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
 		q.Pcond = p
 	}
 
+	p = c.ctxt.EmitEntryLiveness(c.cursym, p, c.newprog)
+
 	var morestacksym *obj.LSym
 	if c.cursym.CFunc() {
 		morestacksym = c.ctxt.Lookup("runtime.morestackc")
diff --git a/src/cmd/internal/obj/s390x/objz.go b/src/cmd/internal/obj/s390x/objz.go
index 2408af8259..b7b8a2c7a6 100644
--- a/src/cmd/internal/obj/s390x/objz.go
+++ b/src/cmd/internal/obj/s390x/objz.go
@@ -679,13 +679,7 @@ func (c *ctxtz) stacksplitPost(p *obj.Prog, pPre *obj.Prog, pPreempt *obj.Prog,
 	spfix.As = obj.ANOP
 	spfix.Spadj = -framesize
 
-	pcdata := obj.Appendp(spfix, c.newprog)
-	pcdata.Pos = c.cursym.Func.Text.Pos
-	pcdata.As = obj.APCDATA
-	pcdata.From.Type = obj.TYPE_CONST
-	pcdata.From.Offset = objabi.PCDATA_StackMapIndex
-	pcdata.To.Type = obj.TYPE_CONST
-	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+	pcdata := c.ctxt.EmitEntryLiveness(c.cursym, spfix, c.newprog)
 
 	// MOVD	LR, R5
 	p = obj.Appendp(pcdata, c.newprog)
diff --git a/src/cmd/internal/obj/x86/obj6.go b/src/cmd/internal/obj/x86/obj6.go
index 59a2e20d6b..139f293b13 100644
--- a/src/cmd/internal/obj/x86/obj6.go
+++ b/src/cmd/internal/obj/x86/obj6.go
@@ -1150,13 +1150,7 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 	spfix.As = obj.ANOP
 	spfix.Spadj = -framesize
 
-	pcdata := obj.Appendp(spfix, newprog)
-	pcdata.Pos = cursym.Func.Text.Pos
-	pcdata.As = obj.APCDATA
-	pcdata.From.Type = obj.TYPE_CONST
-	pcdata.From.Offset = objabi.PCDATA_StackMapIndex
-	pcdata.To.Type = obj.TYPE_CONST
-	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+	pcdata := ctxt.EmitEntryLiveness(cursym, spfix, newprog)
 
 	call := obj.Appendp(pcdata, newprog)
 	call.Pos = cursym.Func.Text.Pos