1 /* Target-dependent code for GNU/Linux, architecture independent. 2 3 Copyright (C) 2009-2023 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #ifndef LINUX_TDEP_H 21 #define LINUX_TDEP_H 22 23 #include "bfd.h" 24 #include "displaced-stepping.h" 25 26 struct inferior; 27 struct regcache; 28 29 /* Enum used to define the extra fields of the siginfo type used by an 30 architecture. */ 31 enum linux_siginfo_extra_field_values 32 { 33 /* Add bound fields into the segmentation fault field. */ 34 LINUX_SIGINFO_FIELD_ADDR_BND = 1 35 }; 36 37 /* Defines a type for the values defined in linux_siginfo_extra_field_values. */ 38 DEF_ENUM_FLAGS_TYPE (enum linux_siginfo_extra_field_values, 39 linux_siginfo_extra_fields); 40 41 /* This function is suitable for architectures that 42 extend/override the standard siginfo in a specific way. */ 43 struct type *linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch, 44 linux_siginfo_extra_fields); 45 46 /* Return true if ADDRESS is within the boundaries of a page mapped with 47 memory tagging protection. */ 48 bool linux_address_in_memtag_page (CORE_ADDR address); 49 50 typedef char *(*linux_collect_thread_registers_ftype) (const struct regcache *, 51 ptid_t, 52 bfd *, char *, int *, 53 enum gdb_signal); 54 55 extern enum gdb_signal linux_gdb_signal_from_target (struct gdbarch *gdbarch, 56 int signal); 57 58 extern int linux_gdb_signal_to_target (struct gdbarch *gdbarch, 59 enum gdb_signal signal); 60 61 /* Default GNU/Linux implementation of `displaced_step_location', as 62 defined in gdbarch.h. Determines the entry point from AT_ENTRY in 63 the target auxiliary vector. */ 64 extern CORE_ADDR linux_displaced_step_location (struct gdbarch *gdbarch); 65 66 67 /* Implementation of gdbarch_displaced_step_prepare. */ 68 69 extern displaced_step_prepare_status linux_displaced_step_prepare 70 (gdbarch *arch, thread_info *thread, CORE_ADDR &displaced_pc); 71 72 /* Implementation of gdbarch_displaced_step_finish. */ 73 74 extern displaced_step_finish_status linux_displaced_step_finish 75 (gdbarch *arch, thread_info *thread, gdb_signal sig); 76 77 /* Implementation of gdbarch_displaced_step_copy_insn_closure_by_addr. */ 78 79 extern const displaced_step_copy_insn_closure * 80 linux_displaced_step_copy_insn_closure_by_addr 81 (inferior *inf, CORE_ADDR addr); 82 83 /* Implementation of gdbarch_displaced_step_restore_all_in_ptid. */ 84 85 extern void linux_displaced_step_restore_all_in_ptid (inferior *parent_inf, 86 ptid_t ptid); 87 88 extern void linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch, 89 int num_disp_step_buffers); 90 91 extern int linux_is_uclinux (void); 92 93 /* Fetch the AT_HWCAP entry from auxv data AUXV. Use TARGET and GDBARCH to 94 parse auxv entries. 95 96 On error, 0 is returned. */ 97 extern CORE_ADDR linux_get_hwcap (const gdb::optional<gdb::byte_vector> &auxv, 98 struct target_ops *target, gdbarch *gdbarch); 99 100 /* Same as the above, but obtain all the inputs from the current inferior. */ 101 102 extern CORE_ADDR linux_get_hwcap (); 103 104 /* Fetch the AT_HWCAP2 entry from auxv data AUXV. Use TARGET and GDBARCH to 105 parse auxv entries. 106 107 On error, 0 is returned. */ 108 extern CORE_ADDR linux_get_hwcap2 (const gdb::optional<gdb::byte_vector> &auxv, 109 struct target_ops *target, gdbarch *gdbarch); 110 111 /* Same as the above, but obtain all the inputs from the current inferior. */ 112 113 extern CORE_ADDR linux_get_hwcap2 (); 114 115 /* Fetch (and possibly build) an appropriate `struct link_map_offsets' 116 for ILP32 and LP64 Linux systems. */ 117 extern struct link_map_offsets *linux_ilp32_fetch_link_map_offsets (); 118 extern struct link_map_offsets *linux_lp64_fetch_link_map_offsets (); 119 120 #endif /* linux-tdep.h */ 121