Encode arm EABI ( hard/soft ) calling convention in ELF header

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Pending
Index: go/src/cmd/link/internal/ld/elf.go
===================================================================
--- go.orig/src/cmd/link/internal/ld/elf.go
+++ go/src/cmd/link/internal/ld/elf.go
@@ -827,7 +827,13 @@
 	// 32-bit architectures
 	case '5':
 		// we use EABI on both linux/arm and freebsd/arm.
-		if HEADTYPE == obj.Hlinux || HEADTYPE == obj.Hfreebsd {
+		if HEADTYPE == obj.Hlinux {
+			if Ctxt.Goarm == 7 {
+				ehdr.flags = 0x5000402 // has entry point, Version5 EABI, hard float
+			} else {
+				ehdr.flags = 0x5000202 // has entry point, Version5 EABI, soft float
+			}
+		} else if HEADTYPE == obj.Hfreebsd {
 			// We set a value here that makes no indication of which
 			// float ABI the object uses, because this is information
 			// used by the dynamic linker to compare executables and