Use require is_aarch64_target

This changes some tests to use "require is_aarch64_target".

gdb/testsuite/gdb.arch/aarch64-atomic-inst.exp

@@ -18,10 +18,7 @@
 # Test single stepping through atomic sequences beginning with
 # a ldxr instruction and ending with a stxr instruction.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {

gdb/testsuite/gdb.arch/aarch64-brk-patterns.exp

@@ -18,10 +18,7 @@
 # Test if GDB stops at various BRK instruction patterns inserted into
 # the code.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {

gdb/testsuite/gdb.arch/aarch64-dbreg-contents.exp

@@ -21,10 +21,7 @@
 #
 # See PR breakpoints/21870.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile .c
 

gdb/testsuite/gdb.arch/aarch64-fp.exp

@@ -18,10 +18,7 @@
 # PR server/17457
 # Test aarch64 floating point registers q0, q1, v0, v1, fpsr, fpcr
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {

gdb/testsuite/gdb.arch/aarch64-mte-core.exp

@@ -164,10 +164,7 @@ proc test_mode { mode } {
 
 }
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 # Run tests
 foreach_with_prefix mode {"sync" "async"} {

gdb/testsuite/gdb.arch/aarch64-mte.exp

@@ -43,10 +43,7 @@ proc get_ltag_from_ptr { ptr } {
 		      "fetch tag from pointer ${ptr}"]
 }
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {

gdb/testsuite/gdb.arch/aarch64-non-address-bits.exp

@@ -19,10 +19,7 @@
 # the upper 16 bits (PAC) or 8 bits (Tag) set, as well as the
 # VA_RANGE_SELECT bit (55).
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {

gdb/testsuite/gdb.arch/aarch64-pauth.exp

@@ -17,10 +17,7 @@
 # supports pauth instructions.  On non pauth systems, all pauth instructions
 # are treated as nops.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 # Build program with address signing forced on.
 standard_testfile

gdb/testsuite/gdb.arch/aarch64-prologue.exp

@@ -15,10 +15,7 @@
 
 # This file is part of the gdb testsuite.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return 1
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" $testfile $srcfile {nodebug}]} {

gdb/testsuite/gdb.arch/aarch64-sighandler-regs.exp

@@ -15,10 +15,7 @@
 #
 # This file is part of the gdb testsuite.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return -1
-}
+require is_aarch64_target
 
 set compile_flags {debug}
 

gdb/testsuite/gdb.arch/aarch64-tagged-pointer.exp

@@ -15,10 +15,7 @@
 #
 # This file is part of the gdb testsuite.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {

gdb/testsuite/gdb.arch/aarch64-unwind-pc.exp

@@ -17,10 +17,7 @@
 
 # Test explicitly unwinding the PC DWARF register on aarch64
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile .S
 

gdb/testsuite/gdb.arch/aarch64-w-registers.exp

@@ -16,10 +16,7 @@
 # Check if the W registers have the expected size and if setting/fetching
 # values from W registers works correctly for both big and little endian.
 
-if {![is_aarch64_target]} {
-    verbose "Skipping ${gdb_test_file_name}."
-    return
-}
+require is_aarch64_target
 
 standard_testfile
 if { [prepare_for_testing "failed to prepare" $testfile $srcfile {nodebug}]} {