67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
|
// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
|
||
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
||
|
|
|
||
|
|
package asm
|
||
|
|
|
||
|
|
import (
|
||
|
|
"os"
|
||
|
|
"os/exec"
|
||
|
|
"testing"
|
||
|
|
)
|
||
|
|
|
||
|
|
// TestReadRuntimeSymbols verifies the GOOBJ reader can extract and find
|
||
|
|
// symbols from the runtime package's compiled archive.
|
||
|
|
func TestReadRuntimeSymbols(t *testing.T) {
|
||
|
|
exp, err := exportPath("runtime")
|
||
|
|
if err != nil {
|
||
|
|
t.Skipf("cannot find runtime export: %v (need Go toolchain)", err)
|
||
|
|
}
|
||
|
|
data, err := os.ReadFile(exp)
|
||
|
|
if err != nil {
|
||
|
|
t.Skipf("cannot read runtime export: %v", err)
|
||
|
|
}
|
||
|
|
gobj, err := extractGOOBJ(data)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("extractGOOBJ: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
t.Logf("runtime: %d symbols", len(gobj.symbols()))
|
||
|
|
|
||
|
|
// Verify we can find well-known runtime symbols.
|
||
|
|
for _, tc := range []struct{ pkg, name string }{
|
||
|
|
{"runtime", "g0"},
|
||
|
|
{"runtime", "morestack"},
|
||
|
|
{"runtime", "newstack"},
|
||
|
|
} {
|
||
|
|
idx := gobj.findSymbol(tc.pkg, tc.name)
|
||
|
|
if idx < 0 {
|
||
|
|
t.Errorf("findSymbol(%q, %q) = -1", tc.pkg, tc.name)
|
||
|
|
} else {
|
||
|
|
t.Logf("findSymbol(%q, %q) = %d", tc.pkg, tc.name, idx)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// TestResolveExternalSymbols verifies end-to-end resolution of external
|
||
|
|
// symbol references.
|
||
|
|
func TestResolveExternalSymbols(t *testing.T) {
|
||
|
|
if _, err := exec.LookPath("go"); err != nil {
|
||
|
|
t.Skip("go toolchain not available")
|
||
|
|
}
|
||
|
|
|
||
|
|
refs := map[string][]string{
|
||
|
|
"runtime": {"g0"},
|
||
|
|
}
|
||
|
|
pkgIdx, symIdx, err := resolveExternalGOOBJ(refs)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("resolveExternalGOOBJ: %v", err)
|
||
|
|
}
|
||
|
|
if len(pkgIdx) != 1 || pkgIdx["runtime"] != 0 {
|
||
|
|
t.Errorf("pkgIdx = %v, want runtime→0", pkgIdx)
|
||
|
|
}
|
||
|
|
if _, ok := symIdx["runtime·g0"]; !ok {
|
||
|
|
t.Errorf("symIdx missing runtime·g0, got %v", symIdx)
|
||
|
|
}
|
||
|
|
t.Logf("runtime·g0 → SymIdx=%d", symIdx["runtime·g0"])
|
||
|
|
}
|