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/* 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 */
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