1/* Machine independent variables that describe the core file under GDB. 2 3 Copyright (C) 1986-2020 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/* Interface routines for core, executable, etc. */ 21 22#if !defined (GDBCORE_H) 23#define GDBCORE_H 1 24 25struct type; 26struct regcache; 27 28#include "bfd.h" 29#include "exec.h" 30#include "target.h" 31 32/* Nonzero if there is a core file. */ 33 34extern int have_core_file_p (void); 35 36/* Report a memory error with error(). */ 37 38extern void memory_error (enum target_xfer_status status, CORE_ADDR memaddr); 39 40/* The string 'memory_error' would use as exception message. */ 41 42extern std::string memory_error_message (enum target_xfer_status err, 43 struct gdbarch *gdbarch, 44 CORE_ADDR memaddr); 45 46/* Like target_read_memory, but report an error if can't read. */ 47 48extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); 49 50/* Like target_read_stack, but report an error if can't read. */ 51 52extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); 53 54/* Like target_read_code, but report an error if can't read. */ 55 56extern void read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); 57 58/* Read an integer from debugged memory, given address and number of 59 bytes. */ 60 61extern LONGEST read_memory_integer (CORE_ADDR memaddr, 62 int len, enum bfd_endian byte_order); 63extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, 64 enum bfd_endian byte_order, 65 LONGEST *return_value); 66 67/* Read an unsigned integer from debugged memory, given address and 68 number of bytes. */ 69 70extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, 71 int len, 72 enum bfd_endian byte_order); 73extern int safe_read_memory_unsigned_integer (CORE_ADDR memaddr, int len, 74 enum bfd_endian byte_order, 75 ULONGEST *return_value); 76 77/* Read an integer from debugged code memory, given address, 78 number of bytes, and byte order for code. */ 79 80extern LONGEST read_code_integer (CORE_ADDR memaddr, int len, 81 enum bfd_endian byte_order); 82 83/* Read an unsigned integer from debugged code memory, given address, 84 number of bytes, and byte order for code. */ 85 86extern ULONGEST read_code_unsigned_integer (CORE_ADDR memaddr, 87 int len, 88 enum bfd_endian byte_order); 89 90/* Read the pointer of type TYPE at ADDR, and return the address it 91 represents. */ 92 93CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 94 95/* Same as target_write_memory, but report an error if can't 96 write. */ 97 98extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, 99 ssize_t len); 100 101/* Same as write_memory, but notify 'memory_changed' observers. */ 102 103extern void write_memory_with_notification (CORE_ADDR memaddr, 104 const bfd_byte *myaddr, 105 ssize_t len); 106 107/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 108extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 109 enum bfd_endian byte_order, 110 ULONGEST value); 111 112/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 113extern void write_memory_signed_integer (CORE_ADDR addr, int len, 114 enum bfd_endian byte_order, 115 LONGEST value); 116 117/* Hook for `exec_file_command' command to call. */ 118 119extern void (*deprecated_exec_file_display_hook) (const char *filename); 120 121/* Hook for "file_command", which is more useful than above 122 (because it is invoked AFTER symbols are read, not before). */ 123 124extern void (*deprecated_file_changed_hook) (const char *filename); 125 126extern void specify_exec_file_hook (void (*hook) (const char *filename)); 127 128/* Binary File Diddler for the core file. */ 129 130#define core_bfd (current_program_space->cbfd.get ()) 131 132/* Whether to open exec and core files read-only or read-write. */ 133 134extern bool write_files; 135 136/* Open and set up the core file bfd. */ 137 138extern void core_target_open (const char *arg, int from_tty); 139 140extern void core_file_command (const char *filename, int from_tty); 141 142extern void exec_file_attach (const char *filename, int from_tty); 143 144/* If the filename of the main executable is unknown, attempt to 145 determine it. If a filename is determined, proceed as though 146 it was just specified with the "file" command. Do nothing if 147 the filename of the main executable is already known. 148 DEFER_BP_RESET uses SYMFILE_DEFER_BP_RESET for the main symbol file. */ 149 150extern void exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty); 151 152extern void validate_files (void); 153 154/* Give the user a message if the current exec file does not match the exec 155 file determined from the target. In case of mismatch, ask the user 156 if the exec file determined from target must be loaded. */ 157extern void validate_exec_file (int from_tty); 158 159/* The current default bfd target. */ 160 161extern const char *gnutarget; 162 163extern void set_gnutarget (const char *); 164 165/* Build either a single-thread or multi-threaded section name for 166 PTID. 167 168 If ptid's lwp member is zero, we want to do the single-threaded 169 thing: look for a section named NAME (as passed to the 170 constructor). If ptid's lwp member is non-zero, we'll want do the 171 multi-threaded thing: look for a section named "NAME/LWP", where 172 LWP is the shortest ASCII decimal representation of ptid's lwp 173 member. */ 174 175class thread_section_name 176{ 177public: 178 /* NAME is the single-threaded section name. If PTID represents an 179 LWP, then the build section name is "NAME/LWP", otherwise it's 180 just "NAME" unmodified. */ 181 thread_section_name (const char *name, ptid_t ptid) 182 { 183 if (ptid.lwp_p ()) 184 { 185 m_storage = string_printf ("%s/%ld", name, ptid.lwp ()); 186 m_section_name = m_storage.c_str (); 187 } 188 else 189 m_section_name = name; 190 } 191 192 /* Return the computed section name. The result is valid as long as 193 this thread_section_name object is live. */ 194 const char *c_str () const 195 { return m_section_name; } 196 197 DISABLE_COPY_AND_ASSIGN (thread_section_name); 198 199private: 200 /* Either a pointer into M_STORAGE, or a pointer to the name passed 201 as parameter to the constructor. */ 202 const char *m_section_name; 203 /* If we need to build a new section name, this is where we store 204 it. */ 205 std::string m_storage; 206}; 207 208#endif /* !defined (GDBCORE_H) */ 209