add reloc type R_KEEP

Author: pkujhd

Diff for: objabi/reloctype/reloctype.1.16.go

@@ -63,6 +63,7 @@ const (
 
 const (
 	//not used, only adapter golang higher version
+	R_KEEP               = 0x10000000 - 10
 	R_INITORDER          = 0x10000000 - 9
 	R_ARM64_PCREL_LDST8  = 0x10000000 - 8
 	R_ARM64_PCREL_LDST16 = 0x10000000 - 7

Diff for: objabi/reloctype/reloctype.1.17.go

@@ -53,6 +53,9 @@ const (
 	// *rtype, and may be set to zero by the linker if it determines the method
 	// text is unreachable by the linked program.
 	R_METHODOFF = (int)(objabi.R_METHODOFF)
+	// R_KEEP tells the linker to keep the referred-to symbol in the final binary
+	// if the symbol containing the R_KEEP relocation is in the final binary.
+	R_KEEP = (int)(objabi.R_KEEP)
 
 	R_GOTPCREL = (int)(objabi.R_GOTPCREL)
 
@@ -70,6 +73,7 @@ const (
 
 const (
 	//not used, only adapter golang higher version
+
 	R_INITORDER          = 0x10000000 - 9
 	R_ARM64_PCREL_LDST8  = 0x10000000 - 8
 	R_ARM64_PCREL_LDST16 = 0x10000000 - 7

Diff for: objabi/reloctype/reloctype.1.20.go

@@ -53,7 +53,9 @@ const (
 	// *rtype, and may be set to zero by the linker if it determines the method
 	// text is unreachable by the linked program.
 	R_METHODOFF = (int)(objabi.R_METHODOFF)
-
+	// R_KEEP tells the linker to keep the referred-to symbol in the final binary
+	// if the symbol containing the R_KEEP relocation is in the final binary.
+	R_KEEP = (int)(objabi.R_KEEP)
 	// R_ADDRCUOFF resolves to a pointer-sized offset from the start of the
 	// symbol's DWARF compile unit.
 	R_ADDRCUOFF = (int)(objabi.R_ADDRCUOFF)

Diff for: objabi/reloctype/reloctype.1.21.go

@@ -53,6 +53,9 @@ const (
 	// *rtype, and may be set to zero by the linker if it determines the method
 	// text is unreachable by the linked program.
 	R_METHODOFF = (int)(objabi.R_METHODOFF)
+	// R_KEEP tells the linker to keep the referred-to symbol in the final binary
+	// if the symbol containing the R_KEEP relocation is in the final binary.
+	R_KEEP = (int)(objabi.R_KEEP)
 
 	// R_ADDRCUOFF resolves to a pointer-sized offset from the start of the
 	// symbol's DWARF compile unit.

Diff for: objabi/reloctype/reloctype.1.8.go

@@ -49,6 +49,7 @@ const (
 
 const (
 	//not used, only adapter golang higher version
+	R_KEEP               = 0x10000000 - 10
 	R_INITORDER          = 0x10000000 - 9
 	R_ARM64_PCREL_LDST8  = 0x10000000 - 8
 	R_ARM64_PCREL_LDST16 = 0x10000000 - 7

Diff for: objabi/reloctype/reloctype.1.9.go

@@ -49,6 +49,7 @@ const (
 
 const (
 	//not used, only adapter golang higher version
+	R_KEEP               = 0x10000000 - 10
 	R_INITORDER          = 0x10000000 - 9
 	R_ARM64_PCREL_LDST8  = 0x10000000 - 8
 	R_ARM64_PCREL_LDST16 = 0x10000000 - 7

Diff for: register.go

@@ -26,7 +26,7 @@ func typelinksRegister(symPtr map[string]uintptr) {
 		if int(f.funcoff) < len(md.pclntable) {
 			_func := (*_func)(unsafe.Pointer(&(md.pclntable[f.funcoff])))
 			name := getfuncname(_func, &md)
-			if !strings.HasPrefix(name, constants.TypeDoubleDotPrefix) && name != EmptyString {
+			if name != EmptyString {
 				if _, ok := symPtr[name]; !ok {
 					symPtr[name] = getfuncentry(_func, md.text)
 				}

Diff for: relocate.go

@@ -332,6 +332,8 @@ func (linker *Linker) relocate(codeModule *CodeModule, symbolMap, symPtr map[str
 					reloctype.R_ADDRCUOFF,
 					reloctype.R_INITORDER:
 					//nothing todo
+				case reloctype.R_KEEP:
+					//nothing todo
 				default:
 					err = fmt.Errorf("unknown reloc type:%s sym:%s", reloctype.RelocTypeString(loc.Type), loc.SymName)
 				}