1/* Machine independent variables that describe the core file under GDB. 2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 3 1997, 1998, 1999, 2000, 2001 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 2 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, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22/* Interface routines for core, executable, etc. */ 23 24#if !defined (GDBCORE_H) 25#define GDBCORE_H 1 26 27struct type; 28 29#include "bfd.h" 30 31/* Return the name of the executable file as a string. 32 ERR nonzero means get error if there is none specified; 33 otherwise return 0 in that case. */ 34 35extern char *get_exec_file (int err); 36 37/* Nonzero if there is a core file. */ 38 39extern int have_core_file_p (void); 40 41/* Read "memory data" from whatever target or inferior we have. 42 Returns zero if successful, errno value if not. EIO is used for 43 address out of bounds. If breakpoints are inserted, returns shadow 44 contents, not the breakpoints themselves. From breakpoint.c. */ 45 46extern int read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len); 47 48/* Report a memory error with error(). */ 49 50extern void memory_error (int status, CORE_ADDR memaddr); 51 52/* Like target_read_memory, but report an error if can't read. */ 53 54extern void read_memory (CORE_ADDR memaddr, char *myaddr, int len); 55 56/* Read an integer from debugged memory, given address and number of 57 bytes. */ 58 59extern LONGEST read_memory_integer (CORE_ADDR memaddr, int len); 60extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, LONGEST *return_value); 61 62/* Read an unsigned integer from debugged memory, given address and 63 number of bytes. */ 64 65extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr, int len); 66 67/* Read a null-terminated string from the debuggee's memory, given address, 68 * a buffer into which to place the string, and the maximum available space */ 69 70extern void read_memory_string (CORE_ADDR, char *, int); 71 72/* Read the pointer of type TYPE at ADDR, and return the address it 73 represents. */ 74 75CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); 76 77/* This takes a char *, not void *. This is probably right, because 78 passing in an int * or whatever is wrong with respect to 79 byteswapping, alignment, different sizes for host vs. target types, 80 etc. */ 81 82extern void write_memory (CORE_ADDR memaddr, char *myaddr, int len); 83 84/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 85extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, 86 ULONGEST value); 87 88/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ 89extern void write_memory_signed_integer (CORE_ADDR addr, int len, 90 LONGEST value); 91 92extern void generic_search (int len, char *data, char *mask, 93 CORE_ADDR startaddr, int increment, 94 CORE_ADDR lorange, CORE_ADDR hirange, 95 CORE_ADDR * addr_found, char *data_found); 96 97/* Hook for `exec_file_command' command to call. */ 98 99extern void (*exec_file_display_hook) (char *filename); 100 101/* Hook for "file_command", which is more useful than above 102 (because it is invoked AFTER symbols are read, not before) */ 103 104extern void (*file_changed_hook) (char *filename); 105 106extern void specify_exec_file_hook (void (*hook) (char *filename)); 107 108/* Binary File Diddlers for the exec and core files */ 109 110extern bfd *core_bfd; 111extern bfd *exec_bfd; 112 113/* Whether to open exec and core files read-only or read-write. */ 114 115extern int write_files; 116 117extern void core_file_command (char *filename, int from_tty); 118 119extern void exec_open (char *filename, int from_tty); 120 121extern void exec_file_attach (char *filename, int from_tty); 122 123extern void exec_file_clear (int from_tty); 124 125extern void validate_files (void); 126 127extern CORE_ADDR register_addr (int regno, CORE_ADDR blockend); 128 129#if !defined (KERNEL_U_ADDR) 130extern CORE_ADDR kernel_u_addr; 131#define KERNEL_U_ADDR kernel_u_addr 132#endif 133 134/* The target vector for core files. */ 135 136extern struct target_ops core_ops; 137 138/* The current default bfd target. */ 139 140extern char *gnutarget; 141 142extern void set_gnutarget (char *); 143 144/* Structure to keep track of core register reading functions for 145 various core file types. */ 146 147struct core_fns 148 { 149 150 /* BFD flavour that a core file handler is prepared to read. This 151 can be used by the handler's core tasting function as a first 152 level filter to reject BFD's that don't have the right 153 flavour. */ 154 155 enum bfd_flavour core_flavour; 156 157 /* Core file handler function to call to recognize corefile 158 formats that BFD rejects. Some core file format just don't fit 159 into the BFD model, or may require other resources to identify 160 them, that simply aren't available to BFD (such as symbols from 161 another file). Returns nonzero if the handler recognizes the 162 format, zero otherwise. */ 163 164 int (*check_format) (bfd *); 165 166 /* Core file handler function to call to ask if it can handle a 167 given core file format or not. Returns zero if it can't, 168 nonzero otherwise. */ 169 170 int (*core_sniffer) (struct core_fns *, bfd *); 171 172 /* Extract the register values out of the core file and store them where 173 `read_register' will find them. 174 175 CORE_REG_SECT points to the register values themselves, read into 176 memory. 177 178 CORE_REG_SIZE is the size of that area. 179 180 WHICH says which set of registers we are handling: 181 0 --- integer registers 182 2 --- floating-point registers, on machines where they are 183 discontiguous 184 3 --- extended floating-point registers, on machines where 185 these are present in yet a third area. (GNU/Linux uses 186 this to get at the SSE registers.) 187 188 REG_ADDR is the offset from u.u_ar0 to the register values relative to 189 core_reg_sect. This is used with old-fashioned core files to locate the 190 registers in a large upage-plus-stack ".reg" section. Original upage 191 address X is at location core_reg_sect+x+reg_addr. */ 192 193 void (*core_read_registers) (char *core_reg_sect, 194 unsigned core_reg_size, 195 int which, CORE_ADDR reg_addr); 196 197 /* Finds the next struct core_fns. They are allocated and initialized 198 in whatever module implements the functions pointed to; an 199 initializer calls add_core_fns to add them to the global chain. */ 200 201 struct core_fns *next; 202 203 }; 204 205extern void add_core_fns (struct core_fns *cf); 206extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); 207extern int default_check_format (bfd * abfd); 208 209#endif /* !defined (GDBCORE_H) */ 210