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The fbsd_get_thread_local_address function accepts the base address of a thread's DTV array and the base address of an object file's link map and uses this to compute a TLS variable's address. FreeBSD architectures use an architecture-specific method to determine the address of the DTV array pointer and call this helper function to perform the rest of the address calculation. * fbsd-tdep.c (fbsd_pspace_data_handle): New variable. (struct fbsd_pspace_data): New type. (get_fbsd_pspace_data, fbsd_pspace_data_cleanup) (fbsd_read_integer_by_name, fbsd_fetch_rtld_offsets) (fbsd_get_tls_index, fbsd_get_thread_local_address): New function. (_initialize_fbsd_tdep): Initialize 'fbsd_pspace_data_handle'. * fbsd-tdep.c (fbsd_get_thread_local_address): New prototype.
75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
/* Target-dependent code for FreeBSD, architecture independent.
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Copyright (C) 2009-2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef FBSD_TDEP_H
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#define FBSD_TDEP_H
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extern void fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch);
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/* Output the header for "info proc files". */
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extern void fbsd_info_proc_files_header ();
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/* Output description of a single file descriptor for "info proc
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files". The KF_TYPE, KF_FD, KF_FLAGS, KF_OFFSET, KF_VNODE_TYPE,
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KF_SOCK_DOMAIN, KF_SOCK_TYPE, and KF_SOCK_PROTOCOL parameters
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should contain the value of the corresponding fields in a 'struct
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kinfo_file'. The KF_SA_LOCAL, KF_SA_PEER, and KF_PATH parameters
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should contain pointers to the corresponding fields in a 'struct
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kinfo_file'. */
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extern void fbsd_info_proc_files_entry (int kf_type, int kf_fd, int kf_flags,
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LONGEST kf_offset, int kf_vnode_type,
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int kf_sock_domain, int kf_sock_type,
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int kf_sock_protocol,
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const void *kf_sa_local,
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const void *kf_sa_peer,
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const void *kf_path);
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/* Output the header for "info proc mappings". ADDR_BIT is the size
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of a virtual address in bits. */
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extern void fbsd_info_proc_mappings_header (int addr_bit);
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/* Output description of a single memory range for "info proc
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mappings". ADDR_BIT is the size of a virtual address in bits. The
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KVE_START, KVE_END, KVE_OFFSET, KVE_FLAGS, and KVE_PROTECTION
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parameters should contain the value of the corresponding fields in
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a 'struct kinfo_vmentry'. The KVE_PATH parameter should contain a
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pointer to the 'kve_path' field in a 'struct kinfo_vmentry'. */
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extern void fbsd_info_proc_mappings_entry (int addr_bit, ULONGEST kve_start,
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ULONGEST kve_end,
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ULONGEST kve_offset,
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int kve_flags, int kve_protection,
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const void *kve_path);
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/* Helper function to fetch the address of a thread-local variable.
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DTV_ADDR is the base address of the thread's dtv array. LM_ADDR is
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the address of the link_map structure for the associated object
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file. OFFSET is the offset of the variable in the object file's
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thread-local variable block. */
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extern CORE_ADDR fbsd_get_thread_local_address (struct gdbarch *gdbarch,
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CORE_ADDR dtv_addr,
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CORE_ADDR lm_addr,
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CORE_ADDR offset);
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#endif /* fbsd-tdep.h */
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