X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fgdbcore.h;h=24db21e462c6408fbfd23deeca41146f852964c5;hb=44486dcf19b62708ad49bbb6094e065a223dea99;hp=776ce9f92bc5fb6e84395be2936954139c2caf6b;hpb=0b30217134add051e159a192066a1e568ebd837f;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/gdbcore.h b/gdb/gdbcore.h index 776ce9f92b..24db21e462 100644 --- a/gdb/gdbcore.h +++ b/gdb/gdbcore.h @@ -1,7 +1,6 @@ /* Machine independent variables that describe the core file under GDB. - Copyright (C) 1986-1987, 1989-2001, 2004, 2007-2012 Free Software - Foundation, Inc. + Copyright (C) 1986-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -28,12 +27,7 @@ struct regcache; #include "bfd.h" #include "exec.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. */ - -extern char *get_exec_file (int err); +#include "target.h" /* Nonzero if there is a core file. */ @@ -41,15 +35,25 @@ extern int have_core_file_p (void); /* Report a memory error with error(). */ -extern void memory_error (int status, CORE_ADDR memaddr); +extern void memory_error (enum target_xfer_status status, CORE_ADDR memaddr); + +/* The string 'memory_error' would use as exception message. */ + +extern std::string memory_error_message (enum target_xfer_status err, + struct gdbarch *gdbarch, + CORE_ADDR memaddr); /* Like target_read_memory, but report an error if can't read. */ -extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len); +extern void read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); /* Like target_read_stack, but report an error if can't read. */ -extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len); +extern void read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); + +/* Like target_read_code, but report an error if can't read. */ + +extern void read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len); /* Read an integer from debugged memory, given address and number of bytes. */ @@ -66,6 +70,22 @@ extern int safe_read_memory_integer (CORE_ADDR memaddr, int len, 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); + +/* Read an integer from debugged code memory, given address, + number of bytes, and byte order for code. */ + +extern LONGEST read_code_integer (CORE_ADDR memaddr, int len, + enum bfd_endian byte_order); + +/* Read an unsigned integer from debugged code memory, given address, + number of bytes, and byte order for code. */ + +extern ULONGEST read_code_unsigned_integer (CORE_ADDR memaddr, + int len, + enum bfd_endian byte_order); /* Read a null-terminated string from the debuggee's memory, given address, a buffer into which to place the string, and the maximum @@ -78,12 +98,17 @@ extern void read_memory_string (CORE_ADDR, char *, int); CORE_ADDR read_memory_typed_address (CORE_ADDR addr, struct type *type); -/* 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. */ +/* Same as target_write_memory, but report an error if can't + write. */ + +extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, + ssize_t len); + +/* Same as write_memory, but notify 'memory_changed' observers. */ -extern void write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len); +extern void write_memory_with_notification (CORE_ADDR memaddr, + const bfd_byte *myaddr, + ssize_t len); /* Store VALUE at ADDR in the inferior as a LEN-byte unsigned integer. */ extern void write_memory_unsigned_integer (CORE_ADDR addr, int len, @@ -97,108 +122,93 @@ extern void write_memory_signed_integer (CORE_ADDR addr, int len, /* Hook for `exec_file_command' command to call. */ -extern void (*deprecated_exec_file_display_hook) (char *filename); +extern void (*deprecated_exec_file_display_hook) (const char *filename); /* Hook for "file_command", which is more useful than above (because it is invoked AFTER symbols are read, not before). */ -extern void (*deprecated_file_changed_hook) (char *filename); +extern void (*deprecated_file_changed_hook) (const char *filename); -extern void specify_exec_file_hook (void (*hook) (char *filename)); +extern void specify_exec_file_hook (void (*hook) (const char *filename)); /* Binary File Diddler for the core file. */ -extern bfd *core_bfd; - -extern struct target_ops *core_target; +#define core_bfd (current_program_space->cbfd.get ()) /* Whether to open exec and core files read-only or read-write. */ -extern int write_files; - -extern void core_file_command (char *filename, int from_tty); +extern bool write_files; -extern void exec_file_attach (char *filename, int from_tty); +/* Open and set up the core file bfd. */ -extern void exec_file_clear (int from_tty); +extern void core_target_open (const char *arg, int from_tty); -extern void validate_files (void); +extern void core_file_command (const char *filename, int from_tty); -/* The current default bfd target. */ +extern void exec_file_attach (const char *filename, int from_tty); -extern char *gnutarget; +/* 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. */ -extern void set_gnutarget (char *); +extern void exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty); -/* Structure to keep track of core register reading functions for - various core file types. */ - -struct core_fns - { - - /* 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. */ - - enum bfd_flavour core_flavour; - - /* 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. */ - - int (*check_format) (bfd *); - - /* 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. */ - - int (*core_sniffer) (struct core_fns *, bfd *); - - /* Extract the register values out of the core file and supply them - into REGCACHE. - - CORE_REG_SECT points to the register values themselves, read into - memory. - - CORE_REG_SIZE is the size of that area. - - 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.) +extern void validate_files (void); - 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. */ +/* 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); - void (*core_read_registers) (struct regcache *regcache, - char *core_reg_sect, - unsigned core_reg_size, - int which, CORE_ADDR reg_addr); +/* The current default bfd target. */ - /* Finds the next struct core_fns. They are allocated and - initialized in whatever module implements the functions pointed - to; an initializer calls deprecated_add_core_fns to add them to - the global chain. */ +extern const char *gnutarget; - struct core_fns *next; +extern void set_gnutarget (const char *); - }; +/* Build either a single-thread or multi-threaded section name for + PTID. -/* NOTE: cagney/2004-04-05: Replaced by "regset.h" and - regset_from_core_section(). */ -extern void deprecated_add_core_fns (struct core_fns *cf); -extern int default_core_sniffer (struct core_fns *cf, bfd * abfd); -extern int default_check_format (bfd * abfd); + 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. */ -struct target_section *deprecated_core_resize_section_table (int num_added); +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) */