gdb: testsuite: Support displaced stepping on LoongArch

When execute the following command on LoongArch:

  make check-gdb TESTS="gdb.base/async-shell.exp"

we can see the following message in gdb/testsuite/gdb.sum:

  UNSUPPORTED: gdb.base/async-shell.exp: displaced stepping

modify support_displaced_stepping to support displaced stepping
on LoongArch.

With this patch:

  PASS: gdb.base/async-shell.exp: run &
  PASS: gdb.base/async-shell.exp: shell echo foo
  PASS: gdb.base/async-shell.exp: interrupt
  PASS: gdb.base/async-shell.exp: process stopped

I did the following tests that use support_displaced_stepping
with this patch on LoongArch, there is no failed testcases.

loongson@linux:~/gdb.git$ grep -r support_displaced_stepping gdb/testsuite/gdb.*
gdb/testsuite/gdb.arch/disp-step-insn-reloc.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.base/step-over-no-symbols.exp:    if { $displaced != "off" && ![support_displaced_stepping] } {
gdb/testsuite/gdb.base/moribund-step.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.base/async-shell.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.base/inferior-died.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.base/step-over-syscall.exp:        if {$displaced == "on" && ![support_displaced_stepping]} {
gdb/testsuite/gdb.mi/mi-watch-nonstop.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-ns-stale-regcache.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-nonstop.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-nsmoribund.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-nsintrall.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-nsthrexec.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.mi/mi-nonstop-exit.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.multi/watchpoint-multi.exp:if [support_displaced_stepping] {
gdb/testsuite/gdb.python/py-evthreads.exp:if { ![support_displaced_stepping] } {
gdb/testsuite/gdb.threads/step-over-lands-on-breakpoint.exp:    if { $displaced != "off" && ![support_displaced_stepping] } {
gdb/testsuite/gdb.threads/interrupt-while-step-over.exp:    if { ${displaced-stepping} != "off" && ![support_displaced_stepping] } {
gdb/testsuite/gdb.threads/step-over-trips-on-watchpoint.exp:    if { $displaced != "off" && ![support_displaced_stepping] } {

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 97841ca19a1e9a632e665f92a2b4b35c6c8c531f..720418beac294376671032e6085f2936516ff70c 100644 (file)
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -3212,7 +3212,7 @@ proc support_displaced_stepping {} {
     if { [istarget "x86_64-*-linux*"] || [istarget "i\[34567\]86-*-linux*"]
         || [istarget "arm*-*-linux*"] || [istarget "powerpc-*-linux*"]
         || [istarget "powerpc64-*-linux*"] || [istarget "s390*-*-*"]
-        || [istarget "aarch64*-*-linux*"] } {
+        || [istarget "aarch64*-*-linux*"] || [istarget "loongarch*-*-linux*"] } {
        return 1
     }