Add support for parsing and returning GoFunc value

goretk · Nov 2, 2023 · 9712683 · 9712683
1 parent 3009b39
commit 9712683
Show file tree

Hide file tree

Showing 2 changed files with 20 additions and 5 deletions.
diff --git a/moduledata.go b/moduledata.go
@@ -65,6 +65,8 @@ type Moduledata interface {
 	ITabLinks() ModuleDataSection
 	// TypeLink returns the typelink section.
 	TypeLink() ([]int32, error)
+	// GoFuncValue returns the value of the 'go:func.*' symbol.
+	GoFuncValue() uint64
 }
 
 type moduledata struct {
@@ -80,6 +82,8 @@ type moduledata struct {
 	FuncTabAddr, FuncTabLen   uint64
 	PCLNTabAddr, PCLNTabLen   uint64
 
+	GoFuncVal uint64
+
 	fh fileHandler
 }
 
@@ -187,6 +191,11 @@ func (m moduledata) TypeLink() ([]int32, error) {
 	return a, nil
 }
 
+// GoFuncValue returns the value of the "go:func.*" symbol.
+func (m moduledata) GoFuncValue() uint64 {
+	return m.GoFuncVal
+}
+
 // ModuleDataSection is a section defined in the Moduledata structure.
 type ModuleDataSection struct {
 	// Address is the virtual address where the section start.
@@ -378,6 +387,8 @@ func processModuledata(data interface{}) (moduledata, error) {
 		md.TypesLen = md.TypesLen - md.TypesAddr
 	}
 
+	extractModFieldValue(&md, "GoFuncVal", val, "GoFunc")
+
 	return md, nil
 }
 

diff --git a/moduledata_test.go b/moduledata_test.go
@@ -34,12 +34,14 @@ func TestModuledata(t *testing.T) {
 		data, dataLen           uint64
 		bss, bssLen             uint64
 		noptrbss, noptrbssLen   uint64
+		gofunc                  uint64
 	}{
-		{"gold-linux-amd64-1.16.0", 0x00401000, 0x98277, 0x00538020, 0xe2c4, 0x00546300, 0x7790, 0x0054daa0, 0x2d750, 0x0057b200, 0x5310},
-		{"gold-linux-amd64-1.8.0", 0x00401000, 0x7c7d0, 0x004f9000, 0x24c8, 0x004fb4e0, 0x1d10, 0x004fd200, 0x1a908, 0x00517b20, 0x46a0},
-		{"gold-linux-amd64-1.7.0", 0x00401000, 0x7d2a0, 0x004f8000, 0x2048, 0x004fa060, 0x1d70, 0x004fbde0, 0x1a910, 0x00516700, 0x4e80},
-		{"gold-linux-amd64-1.5.0", 0x00401000, 0xb15f0, 0x00590000, 0x1bc8, 0x00591be0, 0x2550, 0x00594140, 0x23bd8, 0x005b7d20, 0x4e40},
-		{"gold-linux-386-1.16.0", 0x08049000, 0x846d9, 0x0815a020, 0xdda4, 0x08167de0, 0x3c28, 0x0816ba20, 0x11cfc, 0x0817d720, 0x45e0},
+		{"gold-linux-amd64-1.20.0", 0x00401000, 0x80f84, 0x515180, 0x105c0, 0x525740, 0x78f0, 0x52d040, 0x2dd60, 0x55ada0, 0x39d0, 0x4a1e88},
+		{"gold-linux-amd64-1.16.0", 0x00401000, 0x98277, 0x00538020, 0xe2c4, 0x00546300, 0x7790, 0x0054daa0, 0x2d750, 0x0057b200, 0x5310, 0},
+		{"gold-linux-amd64-1.8.0", 0x00401000, 0x7c7d0, 0x004f9000, 0x24c8, 0x004fb4e0, 0x1d10, 0x004fd200, 0x1a908, 0x00517b20, 0x46a0, 0},
+		{"gold-linux-amd64-1.7.0", 0x00401000, 0x7d2a0, 0x004f8000, 0x2048, 0x004fa060, 0x1d70, 0x004fbde0, 0x1a910, 0x00516700, 0x4e80, 0},
+		{"gold-linux-amd64-1.5.0", 0x00401000, 0xb15f0, 0x00590000, 0x1bc8, 0x00591be0, 0x2550, 0x00594140, 0x23bd8, 0x005b7d20, 0x4e40, 0},
+		{"gold-linux-386-1.16.0", 0x08049000, 0x846d9, 0x0815a020, 0xdda4, 0x08167de0, 0x3c28, 0x0816ba20, 0x11cfc, 0x0817d720, 0x45e0, 0},
 	}
 
 	for _, test := range cases {
@@ -82,6 +84,8 @@ func TestModuledata(t *testing.T) {
 			mdSec = md.FuncTab()
 			r.NotEqual(0, mdSec.Address)
 			r.NotEqual(0, mdSec.Length)
+
+			r.Equal(test.gofunc, md.GoFuncValue())
 		})
 	}
 }