diff --git a/src/debug/gosym/pclntab_test.go b/src/debug/gosym/pclntab_test.go
index 7e7cee67934..d21f0e24a83 100644
--- a/src/debug/gosym/pclntab_test.go
+++ b/src/debug/gosym/pclntab_test.go
@@ -5,7 +5,6 @@
 package gosym
 
 import (
-	"bytes"
 	"debug/elf"
 	"internal/testenv"
 	"io/ioutil"
@@ -33,33 +32,10 @@ func dotest(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	// This command builds pclinetest from pclinetest.asm;
-	// the resulting binary looks like it was built from pclinetest.s,
-	// but we have renamed it to keep it away from the go tool.
 	pclinetestBinary = filepath.Join(pclineTempDir, "pclinetest")
-	cmd := exec.Command(testenv.GoToolPath(t), "tool", "asm", "-o", pclinetestBinary+".o", "pclinetest.asm")
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	if err := cmd.Run(); err != nil {
-		t.Fatal(err)
-	}
-
-	// stamp .o file as being 'package main' so that go tool link will accept it
-	data, err := ioutil.ReadFile(pclinetestBinary + ".o")
-	if err != nil {
-		t.Fatal(err)
-	}
-	i := bytes.IndexByte(data, '\n')
-	if i < 0 {
-		t.Fatal("bad binary")
-	}
-	data = append(append(data[:i:i], "\nmain"...), data[i:]...)
-	if err := ioutil.WriteFile(pclinetestBinary+".o", data, 0666); err != nil {
-		t.Fatal(err)
-	}
-
-	cmd = exec.Command(testenv.GoToolPath(t), "tool", "link", "-H", "linux",
-		"-o", pclinetestBinary, pclinetestBinary+".o")
+	cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", pclinetestBinary)
+	cmd.Dir = "testdata"
+	cmd.Env = append(os.Environ(), "GOOS=linux")
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	if err := cmd.Run(); err != nil {
@@ -232,7 +208,7 @@ func TestPCLine(t *testing.T) {
 	}
 
 	// Test PCToLine
-	sym := tab.LookupFunc("linefrompc")
+	sym := tab.LookupFunc("main.linefrompc")
 	wantLine := 0
 	for pc := sym.Entry; pc < sym.End; pc++ {
 		off := pc - text.Addr // TODO(rsc): should not need off; bug in 8g
@@ -244,13 +220,13 @@ func TestPCLine(t *testing.T) {
 		file, line, fn := tab.PCToLine(pc)
 		if fn == nil {
 			t.Errorf("failed to get line of PC %#x", pc)
-		} else if !strings.HasSuffix(file, "pclinetest.asm") || line != wantLine || fn != sym {
-			t.Errorf("PCToLine(%#x) = %s:%d (%s), want %s:%d (%s)", pc, file, line, fn.Name, "pclinetest.asm", wantLine, sym.Name)
+		} else if !strings.HasSuffix(file, "pclinetest.s") || line != wantLine || fn != sym {
+			t.Errorf("PCToLine(%#x) = %s:%d (%s), want %s:%d (%s)", pc, file, line, fn.Name, "pclinetest.s", wantLine, sym.Name)
 		}
 	}
 
 	// Test LineToPC
-	sym = tab.LookupFunc("pcfromline")
+	sym = tab.LookupFunc("main.pcfromline")
 	lookupline := -1
 	wantLine = 0
 	off := uint64(0) // TODO(rsc): should not need off; bug in 8g
diff --git a/src/debug/gosym/testdata/main.go b/src/debug/gosym/testdata/main.go
new file mode 100644
index 00000000000..b7702184cde
--- /dev/null
+++ b/src/debug/gosym/testdata/main.go
@@ -0,0 +1,10 @@
+package main
+
+func linefrompc()
+func pcfromline()
+
+func main() {
+	// Prevent GC of our test symbols
+	linefrompc()
+	pcfromline()
+}
diff --git a/src/debug/gosym/pclinetest.h b/src/debug/gosym/testdata/pclinetest.h
similarity index 100%
rename from src/debug/gosym/pclinetest.h
rename to src/debug/gosym/testdata/pclinetest.h
diff --git a/src/debug/gosym/pclinetest.asm b/src/debug/gosym/testdata/pclinetest.s
similarity index 96%
rename from src/debug/gosym/pclinetest.asm
rename to src/debug/gosym/testdata/pclinetest.s
index b9ee9c0a504..53461cdfc1a 100644
--- a/src/debug/gosym/pclinetest.asm
+++ b/src/debug/gosym/testdata/pclinetest.s
@@ -1,4 +1,4 @@
-TEXT linefrompc(SB),4,$0	// Each byte stores its line delta
+TEXT ·linefrompc(SB),4,$0	// Each byte stores its line delta
 BYTE $2;
 BYTE $1;
 BYTE $1; BYTE $0;
@@ -28,7 +28,7 @@ BYTE $2;
 BYTE $2;
 BYTE $255;
 
-TEXT pcfromline(SB),4,$0	// Each record stores its line delta, then n, then n more bytes
+TEXT ·pcfromline(SB),4,$0	// Each record stores its line delta, then n, then n more bytes
 BYTE $32; BYTE $0;
 BYTE $1; BYTE $1; BYTE $0;
 BYTE $1; BYTE $0;
@@ -46,13 +46,3 @@ BYTE $3; BYTE $3; BYTE $0; BYTE $0; BYTE $0;
 
 BYTE $4; BYTE $3; BYTE $0; BYTE $0; BYTE $0;
 BYTE $255;
-
-// Keep the linker happy
-TEXT main·main(SB),4,$0
-	RET
-
-TEXT main·init(SB),4,$0
-	// Prevent GC of our test symbols
-	CALL linefrompc(SB)
-	CALL pcfromline(SB)
-	RET