diff --git a/src/cmd/link/internal/arm64/asm.go b/src/cmd/link/internal/arm64/asm.go
index fad709d3140..c10bdc4120a 100644
--- a/src/cmd/link/internal/arm64/asm.go
+++ b/src/cmd/link/internal/arm64/asm.go
@@ -441,6 +441,7 @@ func adddynrel(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, s loade
 		r2.SetOff(r.Off() + 4)
 		r2.SetSym(syms.GOT)
 		r2.SetAdd(int64(ldr.SymGot(targ)))
+		return true
 	}
 	return false
 }
@@ -1187,7 +1188,14 @@ func offsetLabelName(ldr *loader.Loader, s loader.Sym, off int64) string {
 func trampoline(ctxt *ld.Link, ldr *loader.Loader, ri int, rs, s loader.Sym) {
 	relocs := ldr.Relocs(s)
 	r := relocs.At(ri)
+	const pcrel = 1
 	switch r.Type() {
+	case objabi.ElfRelocOffset + objabi.RelocType(elf.R_AARCH64_CALL26),
+		objabi.ElfRelocOffset + objabi.RelocType(elf.R_AARCH64_JUMP26),
+		objabi.MachoRelocOffset + ld.MACHO_ARM64_RELOC_BRANCH26*2 + pcrel:
+		// Host object relocations that will be turned into a PLT call.
+		// The PLT may be too far. Insert a trampoline for them.
+		fallthrough
 	case objabi.R_CALLARM64:
 		var t int64
 		// ldr.SymValue(rs) == 0 indicates a cross-package jump to a function that is not yet
@@ -1196,7 +1204,7 @@ func trampoline(ctxt *ld.Link, ldr *loader.Loader, ri int, rs, s loader.Sym) {
 		if ldr.SymValue(rs) != 0 {
 			t = ldr.SymValue(rs) + r.Add() - (ldr.SymValue(s) + int64(r.Off()))
 		}
-		if t >= 1<<27 || t < -1<<27 || ldr.SymValue(rs) == 0 || (*ld.FlagDebugTramp > 1 && ldr.SymPkg(s) != ldr.SymPkg(rs)) {
+		if t >= 1<<27 || t < -1<<27 || ldr.SymValue(rs) == 0 || (*ld.FlagDebugTramp > 1 && (ldr.SymPkg(s) == "" || ldr.SymPkg(s) != ldr.SymPkg(rs))) {
 			// direct call too far, need to insert trampoline.
 			// look up existing trampolines first. if we found one within the range
 			// of direct call, we can reuse it. otherwise create a new one.
diff --git a/src/cmd/link/internal/ld/data.go b/src/cmd/link/internal/ld/data.go
index a5e6d37f291..1b5eb2f7e31 100644
--- a/src/cmd/link/internal/ld/data.go
+++ b/src/cmd/link/internal/ld/data.go
@@ -39,6 +39,7 @@ import (
 	"cmd/link/internal/loader"
 	"cmd/link/internal/sym"
 	"compress/zlib"
+	"debug/elf"
 	"encoding/binary"
 	"fmt"
 	"log"
@@ -98,7 +99,8 @@ func trampoline(ctxt *Link, s loader.Sym) {
 	relocs := ldr.Relocs(s)
 	for ri := 0; ri < relocs.Count(); ri++ {
 		r := relocs.At(ri)
-		if !r.Type().IsDirectCallOrJump() {
+		rt := r.Type()
+		if !rt.IsDirectCallOrJump() && !isPLTCall(rt) {
 			continue
 		}
 		rs := r.Sym()
@@ -107,8 +109,11 @@ func trampoline(ctxt *Link, s loader.Sym) {
 		}
 		rs = ldr.ResolveABIAlias(rs)
 		if ldr.SymValue(rs) == 0 && (ldr.SymType(rs) != sym.SDYNIMPORT && ldr.SymType(rs) != sym.SUNDEFEXT) {
-			if ldr.SymPkg(rs) == ldr.SymPkg(s) {
-				continue // symbols in the same package are laid out together
+			if ldr.SymPkg(s) != "" && ldr.SymPkg(rs) == ldr.SymPkg(s) {
+				// Symbols in the same package are laid out together.
+				// Except that if SymPkg(s) == "", it is a host object symbol
+				// which may call an external symbol via PLT.
+				continue
 			}
 			if isRuntimeDepPkg(ldr.SymPkg(s)) && isRuntimeDepPkg(ldr.SymPkg(rs)) {
 				continue // runtime packages are laid out together
@@ -119,6 +124,21 @@ func trampoline(ctxt *Link, s loader.Sym) {
 	}
 }
 
+// whether rt is a (host object) relocation that will be turned into
+// a call to PLT.
+func isPLTCall(rt objabi.RelocType) bool {
+	const pcrel = 1
+	switch rt {
+	// ARM64
+	case objabi.ElfRelocOffset + objabi.RelocType(elf.R_AARCH64_CALL26),
+		objabi.ElfRelocOffset + objabi.RelocType(elf.R_AARCH64_JUMP26),
+		objabi.MachoRelocOffset + MACHO_ARM64_RELOC_BRANCH26*2 + pcrel:
+		return true
+	}
+	// TODO: other architectures.
+	return false
+}
+
 // FoldSubSymbolOffset computes the offset of symbol s to its top-level outer
 // symbol. Returns the top-level symbol and the offset.
 // This is used in generating external relocations.