/* Machine independent variables that describe the core file under GDB.
- Copyright 1986, 1987, 1989, 1990, 1992, 1995 Free Software Foundation, Inc.
+
+ Copyright (C) 1986-2020 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Interface routines for core, executable, etc. */
#if !defined (GDBCORE_H)
#define GDBCORE_H 1
-#include "bfd.h"
-
-/* Return the name of the executable file as a string.
- ERR nonzero means get error if there is none specified;
- otherwise return 0 in that case. */
+struct type;
+struct regcache;
-extern char *get_exec_file PARAMS ((int err));
+#include "bfd.h"
+#include "exec.h"
+#include "target.h"
/* Nonzero if there is a core file. */
-extern int have_core_file_p PARAMS ((void));
-
-/* Read "memory data" from whatever target or inferior we have.
- Returns zero if successful, errno value if not. EIO is used for
- address out of bounds. If breakpoints are inserted, returns shadow
- contents, not the breakpoints themselves. From breakpoint.c. */
-
-extern int read_memory_nobpt PARAMS ((CORE_ADDR memaddr, char *myaddr,
- unsigned len));
+extern int have_core_file_p (void);
/* Report a memory error with error(). */
-extern void memory_error PARAMS ((int status, CORE_ADDR memaddr));
+extern void memory_error (enum target_xfer_status status, CORE_ADDR memaddr);
-/* Like target_read_memory, but report an error if can't read. */
+/* The string 'memory_error' would use as exception message. */
-extern void read_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
+extern std::string memory_error_message (enum target_xfer_status err,
+ struct gdbarch *gdbarch,
+ CORE_ADDR memaddr);
-/* Read an integer from debugged memory, given address and number of
- bytes. */
+/* Like target_read_memory, but report an error if can't read. */
-extern LONGEST read_memory_integer PARAMS ((CORE_ADDR memaddr, int len));
+extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
-/* Read an unsigned integer from debugged memory, given address and
- number of bytes. */
+/* Like target_read_stack, but report an error if can't read. */
-extern ULONGEST read_memory_unsigned_integer PARAMS ((CORE_ADDR memaddr, int len));
+extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
-/* Read a null-terminated string from the debuggee's memory, given address,
- * a buffer into which to place the string, and the maximum available space */
-extern void read_memory_string PARAMS ((CORE_ADDR, char *, int));
+/* Like target_read_code, but report an error if can't read. */
-/* This takes a char *, not void *. This is probably right, because
- passing in an int * or whatever is wrong with respect to
- byteswapping, alignment, different sizes for host vs. target types,
- etc. */
+extern void read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len);
-extern void write_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len));
+/* Read an integer from debugged memory, given address and number of
+ bytes. */
-extern void generic_search PARAMS ((int len, char *data, char *mask,
- CORE_ADDR startaddr, int increment,
- CORE_ADDR lorange, CORE_ADDR hirange,
- CORE_ADDR * addr_found, char *data_found));
-\f
-/* Hook for `exec_file_command' command to call. */
+extern LONGEST read_memory_integer (CORE_ADDR memaddr,
+ int len, enum bfd_endian byte_order);
+extern int safe_read_memory_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order,
+ LONGEST *return_value);
-extern void (*exec_file_display_hook) PARAMS ((char *filename));
+/* Read an unsigned integer from debugged memory, given address and
+ number of bytes. */
-/* Hook for "file_command", which is more useful than above
- (because it is invoked AFTER symbols are read, not before) */
+extern ULONGEST read_memory_unsigned_integer (CORE_ADDR memaddr,
+ int len,
+ enum bfd_endian byte_order);
+extern int safe_read_memory_unsigned_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order,
+ ULONGEST *return_value);
-extern void (*file_changed_hook) PARAMS ((char *filename));
+/* Read an integer from debugged code memory, given address,
+ number of bytes, and byte order for code. */
-extern void specify_exec_file_hook PARAMS ((void (*hook) (char *filename)));
+extern LONGEST read_code_integer (CORE_ADDR memaddr, int len,
+ enum bfd_endian byte_order);
-/* Binary File Diddlers for the exec and core files */
+/* Read an unsigned integer from debugged code memory, given address,
+ number of bytes, and byte order for code. */
-extern bfd *core_bfd;
-extern bfd *exec_bfd;
+extern ULONGEST read_code_unsigned_integer (CORE_ADDR memaddr,
+ int len,
+ enum bfd_endian byte_order);
-/* Whether to open exec and core files read-only or read-write. */
+/* Read a null-terminated string from the debuggee's memory, given
+ address, a buffer into which to place the string, and the maximum
+ available space. */
-extern int write_files;
+extern void read_memory_string (CORE_ADDR, char *, int);
-extern void core_file_command PARAMS ((char *filename, int from_tty));
+/* Read the pointer of type TYPE at ADDR, and return the address it
+ represents. */
-extern void exec_file_attach PARAMS ((char *filename, int from_tty));
+CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type);
-extern void exec_file_command PARAMS ((char *filename, int from_tty));
+/* Same as target_write_memory, but report an error if can't
+ write. */
-extern void validate_files PARAMS ((void));
+extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
+ ssize_t len);
-extern CORE_ADDR register_addr PARAMS ((int regno, CORE_ADDR blockend));
+/* Same as write_memory, but notify 'memory_changed' observers. */
-extern void registers_fetched PARAMS ((void));
+extern void write_memory_with_notification (CORE_ADDR memaddr,
+ const bfd_byte *myaddr,
+ ssize_t len);
-#if !defined (KERNEL_U_ADDR)
-extern CORE_ADDR kernel_u_addr;
-#define KERNEL_U_ADDR kernel_u_addr
-#endif
+/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */
+extern void write_memory_unsigned_integer (CORE_ADDR addr, int len,
+ enum bfd_endian byte_order,
+ ULONGEST value);
-/* The target vector for core files. */
+/* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */
+extern void write_memory_signed_integer (CORE_ADDR addr, int len,
+ enum bfd_endian byte_order,
+ LONGEST value);
+\f
+/* Hook for `exec_file_command' command to call. */
-extern struct target_ops core_ops;
+extern void (*deprecated_exec_file_display_hook) (const char *filename);
-/* The current default bfd target. */
+/* Hook for "file_command", which is more useful than above
+ (because it is invoked AFTER symbols are read, not before). */
-extern char *gnutarget;
+extern void (*deprecated_file_changed_hook) (const char *filename);
-extern void set_gnutarget PARAMS ((char *));
+extern void specify_exec_file_hook (void (*hook) (const char *filename));
-/* Structure to keep track of core register reading functions for
- various core file types. */
+/* Binary File Diddler for the core file. */
-struct core_fns
- {
+#define core_bfd (current_program_space->cbfd.get ())
- /* BFD flavour that a core file handler is prepared to read. This
- can be used by the handler's core tasting function as a first
- level filter to reject BFD's that don't have the right
- flavour. */
+/* Whether to open exec and core files read-only or read-write. */
- enum bfd_flavour core_flavour;
+extern bool write_files;
- /* Core file handler function to call to recognize corefile
- formats that BFD rejects. Some core file format just don't fit
- into the BFD model, or may require other resources to identify
- them, that simply aren't available to BFD (such as symbols from
- another file). Returns nonzero if the handler recognizes the
- format, zero otherwise. */
+/* Open and set up the core file bfd. */
- int (*check_format) PARAMS ((bfd *));
+extern void core_target_open (const char *arg, int from_tty);
- /* Core file handler function to call to ask if it can handle a
- given core file format or not. Returns zero if it can't,
- nonzero otherwise. */
+extern void core_file_command (const char *filename, int from_tty);
- int (*core_sniffer) PARAMS ((struct core_fns *, bfd *));
+extern void exec_file_attach (const char *filename, int from_tty);
- /* Extract the register values out of the core file and store them where
- `read_register' will find them.
+/* If the filename of the main executable is unknown, attempt to
+ determine it. If a filename is determined, proceed as though
+ it was just specified with the "file" command. Do nothing if
+ the filename of the main executable is already known.
+ DEFER_BP_RESET uses SYMFILE_DEFER_BP_RESET for the main symbol file. */
- CORE_REG_SECT points to the register values themselves, read into
- memory.
+extern void exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty);
- CORE_REG_SIZE is the size of that area.
+extern void validate_files (void);
- WHICH says which set of registers we are handling:
- 0 --- integer registers
- 2 --- floating-point registers, on machines where they are
- discontiguous
- 3 --- extended floating-point registers, on machines where
- these are present in yet a third area. (GNU/Linux uses
- this to get at the SSE registers.)
+/* Give the user a message if the current exec file does not match the exec
+ file determined from the target. In case of mismatch, ask the user
+ if the exec file determined from target must be loaded. */
+extern void validate_exec_file (int from_tty);
- REG_ADDR is the offset from u.u_ar0 to the register values relative to
- core_reg_sect. This is used with old-fashioned core files to locate the
- registers in a large upage-plus-stack ".reg" section. Original upage
- address X is at location core_reg_sect+x+reg_addr. */
+/* The current default bfd target. */
- void (*core_read_registers) PARAMS ((char *core_reg_sect,
- unsigned core_reg_size,
- int which, CORE_ADDR reg_addr));
+extern const char *gnutarget;
- /* Finds the next struct core_fns. They are allocated and initialized
- in whatever module implements the functions pointed to; an
- initializer calls add_core_fns to add them to the global chain. */
+extern void set_gnutarget (const char *);
- struct core_fns *next;
+/* Build either a single-thread or multi-threaded section name for
+ PTID.
- };
+ If ptid's lwp member is zero, we want to do the single-threaded
+ thing: look for a section named NAME (as passed to the
+ constructor). If ptid's lwp member is non-zero, we'll want do the
+ multi-threaded thing: look for a section named "NAME/LWP", where
+ LWP is the shortest ASCII decimal representation of ptid's lwp
+ member. */
-extern void add_core_fns PARAMS ((struct core_fns * cf));
-extern int default_core_sniffer PARAMS ((struct core_fns *cf, bfd *abfd));
-extern int default_check_format PARAMS ((bfd *abfd));
+class thread_section_name
+{
+public:
+ /* NAME is the single-threaded section name. If PTID represents an
+ LWP, then the build section name is "NAME/LWP", otherwise it's
+ just "NAME" unmodified. */
+ thread_section_name (const char *name, ptid_t ptid)
+ {
+ if (ptid.lwp_p ())
+ {
+ m_storage = string_printf ("%s/%ld", name, ptid.lwp ());
+ m_section_name = m_storage.c_str ();
+ }
+ else
+ m_section_name = name;
+ }
+
+ /* Return the computed section name. The result is valid as long as
+ this thread_section_name object is live. */
+ const char *c_str () const
+ { return m_section_name; }
+
+ DISABLE_COPY_AND_ASSIGN (thread_section_name);
+
+private:
+ /* Either a pointer into M_STORAGE, or a pointer to the name passed
+ as parameter to the constructor. */
+ const char *m_section_name;
+ /* If we need to build a new section name, this is where we store
+ it. */
+ std::string m_storage;
+};
#endif /* !defined (GDBCORE_H) */
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