1 files changed, 59 insertions, 0 deletions
diff --git a/gdb/svr4-tls-tdep.h b/gdb/svr4-tls-tdep.h
new file mode 100644
index 0000000..73efc02
--- /dev/null
+++ b/gdb/svr4-tls-tdep.h
@@ -0,0 +1,59 @@
+/* Target-dependent code for GNU/Linux, architecture independent.
+
+   Copyright (C) 2025 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef GDB_SVR4_TLS_TDEP_H
+#define GDB_SVR4_TLS_TDEP_H
+
+/* C library variants for TLS lookup.  */
+
+enum svr4_tls_libc
+{
+  svr4_tls_libc_unknown,
+  svr4_tls_libc_musl,
+  svr4_tls_libc_glibc
+};
+
+/* Function type for "get_tls_dtv_addr" method.  */
+
+typedef CORE_ADDR (get_tls_dtv_addr_ftype) (struct gdbarch *gdbarch,
+					    ptid_t ptid,
+					    enum svr4_tls_libc libc);
+
+/* Function type for "get_tls_dtp_offset" method.  */
+
+typedef CORE_ADDR (get_tls_dtp_offset_ftype) (struct gdbarch *gdbarch,
+					      ptid_t ptid,
+					      enum svr4_tls_libc libc);
+
+/* Register architecture specific methods for fetching the TLS DTV
+   and TLS DTP, used by linux_get_thread_local_address.  */
+
+extern void svr4_tls_register_tls_methods
+  (struct gdbarch_info info, struct gdbarch *gdbarch,
+   get_tls_dtv_addr_ftype *get_tls_dtv_addr,
+   get_tls_dtp_offset_ftype *get_tls_dtp_offset = nullptr);
+
+/* Used as a gdbarch method for get_thread_local_address when the tdep
+   file also defines a suitable  method for obtaining the TLS DTV.
+   See linux_init_abi(), above.  */
+CORE_ADDR
+svr4_tls_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
+				   CORE_ADDR lm_addr, CORE_ADDR offset);
+
+#endif /* GDB_SVR4_TLS_TDEP_H */