[dev.typeparams] cmd/link: take function address in assembly in TestFuncAlign

In TestFuncAlign we want to get the address of an assembly
function. Take the address in assembly, so we get the actual
function's address, not the wrapper's.

Change-Id: Idc1fe2c8426562c70f8f7d6e489584ef059bc556
Reviewed-on: https://go-review.googlesource.com/c/go/+/324249
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>

diff --git a/src/cmd/link/link_test.go b/src/cmd/link/link_test.go
index 4d6bc76aca82a588ace4b2ca8f48c010b195244b..4a580991ef48cd63b56b5011189f2205a1f59a76 100644 (file)
--- a/src/cmd/link/link_test.go
+++ b/src/cmd/link/link_test.go
@@ -524,14 +524,13 @@ const testFuncAlignSrc = `
 package main
 import (
        "fmt"
-       "reflect"
 )
 func alignPc()
+var alignPcFnAddr uintptr
 
 func main() {
-       addr := reflect.ValueOf(alignPc).Pointer()
-       if (addr % 512) != 0 {
-               fmt.Printf("expected 512 bytes alignment, got %v\n", addr)
+       if alignPcFnAddr % 512 != 0 {
+               fmt.Printf("expected 512 bytes alignment, got %v\n", alignPcFnAddr)
        } else {
                fmt.Printf("PASS")
        }
@@ -546,6 +545,9 @@ TEXT        ·alignPc(SB),NOSPLIT, $0-0
        PCALIGN $512
        MOVD    $3, R1
        RET
+
+GLOBL  ·alignPcFnAddr(SB),RODATA,$8
+DATA   ·alignPcFnAddr(SB)/8,$·alignPc(SB)
 `
 
 // TestFuncAlign verifies that the address of a function can be aligned