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Diffstat (limited to 'gdb/s390-linux-nat.c')
-rw-r--r--gdb/s390-linux-nat.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/gdb/s390-linux-nat.c b/gdb/s390-linux-nat.c
index 67f97f9..cf3f7d7 100644
--- a/gdb/s390-linux-nat.c
+++ b/gdb/s390-linux-nat.c
@@ -632,8 +632,6 @@ s390_read_description (struct target_ops *ops)
= check_regset (tid, NT_S390_LAST_BREAK, 8);
have_regset_system_call
= check_regset (tid, NT_S390_SYSTEM_CALL, 4);
- have_regset_tdb
- = check_regset (tid, NT_S390_TDB, s390_sizeof_tdbregset);
#ifdef __s390x__
/* If GDB itself is compiled as 64-bit, we are running on a machine in
@@ -642,6 +640,9 @@ s390_read_description (struct target_ops *ops)
addressing mode, but the kernel supports using 64-bit registers in
that mode, report s390 architecture with 64-bit GPRs. */
+ have_regset_tdb = (s390_get_hwcap () & HWCAP_S390_TE) ?
+ check_regset (tid, NT_S390_TDB, s390_sizeof_tdbregset) : 0;
+
if (s390_target_wordsize () == 8)
return (have_regset_tdb ? tdesc_s390x_te_linux64 :
have_regset_system_call? tdesc_s390x_linux64v2 :