Add aarch64-*-rtems* target

bfd/config.bfd

@@ -176,7 +176,7 @@ case "${targ}" in
     targ_archs="$targ_archs bfd_i386_arch bfd_powerpc_arch bfd_rs6000_arch"
     want64=true
     ;;
-  aarch64-*-elf)
+  aarch64-*-elf | aarch64-*-rtems*)
     targ_defvec=aarch64_elf64_le_vec
     targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec"
     want64=true

gas/configure.tgt

@@ -120,7 +120,7 @@ esac
 generic_target=${cpu_type}-$vendor-$os
 # Note: This table is alpha-sorted, please try to keep it that way.
 case ${generic_target} in
-  aarch64*-*-elf)			fmt=elf;;
+  aarch64*-*-elf | aarch64*-*-rtems*)	fmt=elf;;
   aarch64*-*-linux*)			fmt=elf em=linux ;;
 
   alpha-*-*vms*)			fmt=evax ;;

gdb/configure.tgt

@@ -36,7 +36,7 @@ esac
 # map target info into gdb names.
 
 case "${targ}" in
-aarch64*-*-elf)
+aarch64*-*-elf | aarch64*-*-rtems*)
 	# Target: AArch64 embedded system
 	gdb_target_obs="aarch64-tdep.o aarch64-newlib-tdep.o aarch64-insn.o"
 	;;

ld/configure.tgt

@@ -47,7 +47,8 @@ targ64_extra_libpath=
 case "${targ}" in
 aarch64_be-*-elf)	targ_emul=aarch64elfb
 			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b armelfb armelf" ;;
-aarch64-*-elf)		targ_emul=aarch64elf
+aarch64-*-elf | aarch64-*-rtems*)
+			targ_emul=aarch64elf
 			targ_extra_emuls="aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb" ;;
 aarch64-*-cloudabi*)	targ_emul=aarch64cloudabi
 			targ_extra_emuls=aarch64cloudabib ;;