* osfsolib.c: Remove file, replaced by solib-osf.c.
* Makefile.in: Remove compilation rules for osfsolib.c.
This commit is contained in:
parent
48b9193866
commit
d9025a1885
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@ -1,3 +1,8 @@
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2002-09-16 Joel Brobecker <brobecker@gnat.com>
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* osfsolib.c: Remove file, replaced by solib-osf.c.
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* Makefile.in: Remove compilation rules for osfsolib.c.
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2002-09-16 David Carlton <carlton@math.stanford.edu>
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* cp-valprint.c (cp_print_class_method): Correct args to
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@ -1948,9 +1948,6 @@ op50-rom.o: op50-rom.c $(defs_h) $(gdbcore_h) $(target_h) $(monitor_h) \
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$(serial_h)
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# OBSOLETE os9kread.o: os9kread.c
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osabi.o: osabi.c $(defs_h) $(gdb_string_h) $(osabi_h) $(elf_bfd_h)
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osfsolib.o: osfsolib.c $(defs_h) $(gdb_string_h) $(symtab_h) $(bfd_h) \
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$(symfile_h) $(objfiles_h) $(gdbcore_h) $(command_h) $(target_h) \
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$(frame_h) $(gdb_regex_h) $(inferior_h) $(language_h) $(gdbcmd_h)
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p-lang.o: p-lang.c $(defs_h) $(gdb_string_h) $(symtab_h) $(gdbtypes_h) \
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$(expression_h) $(parser_defs_h) $(language_h) $(p_lang_h) \
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$(valprint_h)
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938
gdb/osfsolib.c
938
gdb/osfsolib.c
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@ -1,938 +0,0 @@
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/* Handle OSF/1 shared libraries for GDB, the GNU Debugger.
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Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* FIXME: Most of this code could be merged with solib.c by using
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next_link_map_member and xfer_link_map_member in solib.c. */
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#include "defs.h"
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#include <sys/types.h>
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#include <signal.h>
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#include "gdb_string.h"
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#include <fcntl.h>
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#include "symtab.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "target.h"
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#include "frame.h"
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#include "gdb_regex.h"
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#include "inferior.h"
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#include "language.h"
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#include "gdbcmd.h"
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#define MAX_PATH_SIZE 1024 /* FIXME: Should be dynamic */
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/* When handling shared libraries, GDB has to find out the pathnames
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of all shared libraries that are currently loaded (to read in their
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symbols) and where the shared libraries are loaded in memory
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(to relocate them properly from their prelinked addresses to the
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current load address).
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Under OSF/1 there are two possibilities to get at this information:
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1) Peek around in the runtime loader structures.
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These are not documented, and they are not defined in the system
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header files. The definitions below were obtained by experimentation,
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but they seem stable enough.
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2) Use the undocumented libxproc.a library, which contains the
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equivalent ldr_* routines.
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This approach is somewhat cleaner, but it requires that the GDB
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executable is dynamically linked. In addition it requires a
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NAT_CLIBS= -lxproc -Wl,-expect_unresolved,ldr_process_context
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linker specification for GDB and all applications that are using
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libgdb.
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We will use the peeking approach until it becomes unwieldy. */
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#ifndef USE_LDR_ROUTINES
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/* Definition of runtime loader structures, found by experimentation. */
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#define RLD_CONTEXT_ADDRESS 0x3ffc0000000
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typedef struct
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{
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CORE_ADDR next;
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CORE_ADDR previous;
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CORE_ADDR unknown1;
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char *module_name;
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CORE_ADDR modinfo_addr;
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long module_id;
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CORE_ADDR unknown2;
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CORE_ADDR unknown3;
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long region_count;
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CORE_ADDR regioninfo_addr;
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}
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ldr_module_info_t;
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typedef struct
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{
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long unknown1;
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CORE_ADDR regionname_addr;
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long protection;
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CORE_ADDR vaddr;
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CORE_ADDR mapaddr;
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long size;
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long unknown2[5];
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}
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ldr_region_info_t;
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typedef struct
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{
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CORE_ADDR unknown1;
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CORE_ADDR unknown2;
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CORE_ADDR head;
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CORE_ADDR tail;
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}
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ldr_context_t;
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static ldr_context_t ldr_context;
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#else
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#include <loader.h>
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static ldr_process_t fake_ldr_process;
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/* Called by ldr_* routines to read memory from the current target. */
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static int ldr_read_memory (CORE_ADDR, char *, int, int);
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static int
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ldr_read_memory (CORE_ADDR memaddr, char *myaddr, int len, int readstring)
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{
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int result;
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char *buffer;
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if (readstring)
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{
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target_read_string (memaddr, &buffer, len, &result);
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if (result == 0)
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strcpy (myaddr, buffer);
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xfree (buffer);
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}
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else
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result = target_read_memory (memaddr, myaddr, len);
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if (result != 0)
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result = -result;
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return result;
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}
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#endif
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/* Define our own link_map structure.
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This will help to share code with solib.c. */
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struct link_map
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{
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CORE_ADDR l_offset; /* prelink to load address offset */
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char *l_name; /* full name of loaded object */
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ldr_module_info_t module_info; /* corresponding module info */
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};
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#define LM_OFFSET(so) ((so) -> lm.l_offset)
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#define LM_NAME(so) ((so) -> lm.l_name)
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struct so_list
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{
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struct so_list *next; /* next structure in linked list */
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struct link_map lm; /* copy of link map from inferior */
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struct link_map *lmaddr; /* addr in inferior lm was read from */
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CORE_ADDR lmend; /* upper addr bound of mapped object */
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char so_name[MAX_PATH_SIZE]; /* shared object lib name (FIXME) */
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char symbols_loaded; /* flag: symbols read in yet? */
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char from_tty; /* flag: print msgs? */
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struct objfile *objfile; /* objfile for loaded lib */
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struct section_table *sections;
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struct section_table *sections_end;
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struct section_table *textsection;
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bfd *abfd;
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};
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static struct so_list *so_list_head; /* List of known shared objects */
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extern int fdmatch (int, int); /* In libiberty */
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/* Local function prototypes */
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static void sharedlibrary_command (char *, int);
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static void info_sharedlibrary_command (char *, int);
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static int symbol_add_stub (char *);
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static struct so_list *find_solib (struct so_list *);
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static struct link_map *first_link_map_member (void);
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static struct link_map *next_link_map_member (struct so_list *);
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static void xfer_link_map_member (struct so_list *, struct link_map *);
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static int solib_map_sections (char *);
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/*
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LOCAL FUNCTION
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solib_map_sections -- open bfd and build sections for shared lib
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SYNOPSIS
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static int solib_map_sections (struct so_list *so)
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DESCRIPTION
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Given a pointer to one of the shared objects in our list
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of mapped objects, use the recorded name to open a bfd
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descriptor for the object, build a section table, and then
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relocate all the section addresses by the base address at
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which the shared object was mapped.
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FIXMES
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In most (all?) cases the shared object file name recorded in the
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dynamic linkage tables will be a fully qualified pathname. For
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cases where it isn't, do we really mimic the systems search
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mechanism correctly in the below code (particularly the tilde
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expansion stuff?).
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*/
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static int
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solib_map_sections (char *arg)
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{
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struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */
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char *filename;
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char *scratch_pathname;
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int scratch_chan;
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struct section_table *p;
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struct cleanup *old_chain;
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bfd *abfd;
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filename = tilde_expand (so->so_name);
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old_chain = make_cleanup (xfree, filename);
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scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
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&scratch_pathname);
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if (scratch_chan < 0)
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{
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scratch_chan = openp (getenv ("LD_LIBRARY_PATH"), 1, filename,
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O_RDONLY, 0, &scratch_pathname);
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}
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if (scratch_chan < 0)
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{
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perror_with_name (filename);
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}
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/* Leave scratch_pathname allocated. bfd->name will point to it. */
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abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
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if (!abfd)
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{
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close (scratch_chan);
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error ("Could not open `%s' as an executable file: %s",
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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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/* Leave bfd open, core_xfer_memory and "info files" need it. */
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so->abfd = abfd;
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abfd->cacheable = 1;
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if (!bfd_check_format (abfd, bfd_object))
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{
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error ("\"%s\": not in executable format: %s.",
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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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if (build_section_table (abfd, &so->sections, &so->sections_end))
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{
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error ("Can't find the file sections in `%s': %s",
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bfd_get_filename (exec_bfd), bfd_errmsg (bfd_get_error ()));
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}
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for (p = so->sections; p < so->sections_end; p++)
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{
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/* Relocate the section binding addresses as recorded in the shared
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object's file by the offset to get the address to which the
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object was actually mapped. */
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p->addr += LM_OFFSET (so);
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p->endaddr += LM_OFFSET (so);
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so->lmend = (CORE_ADDR) max (p->endaddr, so->lmend);
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if (STREQ (p->the_bfd_section->name, ".text"))
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{
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so->textsection = p;
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}
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}
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/* Free the file names, close the file now. */
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do_cleanups (old_chain);
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return (1);
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}
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||||
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||||
/*
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||||
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||||
LOCAL FUNCTION
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||||
|
||||
first_link_map_member -- locate first member in dynamic linker's map
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||||
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||||
SYNOPSIS
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|
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static struct link_map *first_link_map_member (void)
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|
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DESCRIPTION
|
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Read in a copy of the first member in the inferior's dynamic
|
||||
link map from the inferior's dynamic linker structures, and return
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a pointer to the copy in our address space.
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||||
*/
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||||
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||||
static struct link_map *
|
||||
first_link_map_member (void)
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||||
{
|
||||
struct link_map *lm = NULL;
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||||
static struct link_map first_lm;
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||||
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#ifdef USE_LDR_ROUTINES
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||||
ldr_module_t mod_id = LDR_NULL_MODULE;
|
||||
size_t retsize;
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||||
|
||||
fake_ldr_process = ldr_core_process ();
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ldr_set_core_reader (ldr_read_memory);
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ldr_xdetach (fake_ldr_process);
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||||
if (ldr_xattach (fake_ldr_process) != 0
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|| ldr_next_module (fake_ldr_process, &mod_id) != 0
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|| mod_id == LDR_NULL_MODULE
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||||
|| ldr_inq_module (fake_ldr_process, mod_id,
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&first_lm.module_info, sizeof (ldr_module_info_t),
|
||||
&retsize) != 0)
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return lm;
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||||
#else
|
||||
CORE_ADDR ldr_context_addr;
|
||||
|
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if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
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(char *) &ldr_context_addr,
|
||||
sizeof (CORE_ADDR)) != 0
|
||||
|| target_read_memory (ldr_context_addr,
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||||
(char *) &ldr_context,
|
||||
sizeof (ldr_context_t)) != 0
|
||||
|| target_read_memory ((CORE_ADDR) ldr_context.head,
|
||||
(char *) &first_lm.module_info,
|
||||
sizeof (ldr_module_info_t)) != 0)
|
||||
return lm;
|
||||
#endif
|
||||
|
||||
lm = &first_lm;
|
||||
|
||||
/* The first entry is for the main program and should be skipped. */
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||||
lm->l_name = NULL;
|
||||
|
||||
return lm;
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||||
}
|
||||
|
||||
static struct link_map *
|
||||
next_link_map_member (struct so_list *so_list_ptr)
|
||||
{
|
||||
struct link_map *lm = NULL;
|
||||
static struct link_map next_lm;
|
||||
#ifdef USE_LDR_ROUTINES
|
||||
ldr_module_t mod_id = so_list_ptr->lm.module_info.lmi_modid;
|
||||
size_t retsize;
|
||||
|
||||
if (ldr_next_module (fake_ldr_process, &mod_id) != 0
|
||||
|| mod_id == LDR_NULL_MODULE
|
||||
|| ldr_inq_module (fake_ldr_process, mod_id,
|
||||
&next_lm.module_info, sizeof (ldr_module_info_t),
|
||||
&retsize) != 0)
|
||||
return lm;
|
||||
|
||||
lm = &next_lm;
|
||||
lm->l_name = lm->module_info.lmi_name;
|
||||
#else
|
||||
CORE_ADDR ldr_context_addr;
|
||||
|
||||
/* Reread context in case ldr_context.tail was updated. */
|
||||
|
||||
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
||||
(char *) &ldr_context_addr,
|
||||
sizeof (CORE_ADDR)) != 0
|
||||
|| target_read_memory (ldr_context_addr,
|
||||
(char *) &ldr_context,
|
||||
sizeof (ldr_context_t)) != 0
|
||||
|| so_list_ptr->lm.module_info.modinfo_addr == ldr_context.tail
|
||||
|| target_read_memory (so_list_ptr->lm.module_info.next,
|
||||
(char *) &next_lm.module_info,
|
||||
sizeof (ldr_module_info_t)) != 0)
|
||||
return lm;
|
||||
|
||||
lm = &next_lm;
|
||||
lm->l_name = lm->module_info.module_name;
|
||||
#endif
|
||||
return lm;
|
||||
}
|
||||
|
||||
static void
|
||||
xfer_link_map_member (struct so_list *so_list_ptr, struct link_map *lm)
|
||||
{
|
||||
int i;
|
||||
so_list_ptr->lm = *lm;
|
||||
|
||||
/* OSF/1 shared libraries are pre-linked to particular addresses,
|
||||
but the runtime loader may have to relocate them if the
|
||||
address ranges of the libraries used by the target executable clash,
|
||||
or if the target executable is linked with the -taso option.
|
||||
The offset is the difference between the address where the shared
|
||||
library is mapped and the pre-linked address of the shared library.
|
||||
|
||||
FIXME: GDB is currently unable to relocate the shared library
|
||||
sections by different offsets. If sections are relocated by
|
||||
different offsets, put out a warning and use the offset of the
|
||||
first section for all remaining sections. */
|
||||
LM_OFFSET (so_list_ptr) = 0;
|
||||
|
||||
/* There is one entry that has no name (for the inferior executable)
|
||||
since it is not a shared object. */
|
||||
if (LM_NAME (so_list_ptr) != 0)
|
||||
{
|
||||
|
||||
#ifdef USE_LDR_ROUTINES
|
||||
int len = strlen (LM_NAME (so_list_ptr) + 1);
|
||||
|
||||
if (len > MAX_PATH_SIZE)
|
||||
len = MAX_PATH_SIZE;
|
||||
strncpy (so_list_ptr->so_name, LM_NAME (so_list_ptr), MAX_PATH_SIZE);
|
||||
so_list_ptr->so_name[MAX_PATH_SIZE - 1] = '\0';
|
||||
|
||||
for (i = 0; i < lm->module_info.lmi_nregion; i++)
|
||||
{
|
||||
ldr_region_info_t region_info;
|
||||
size_t retsize;
|
||||
CORE_ADDR region_offset;
|
||||
|
||||
if (ldr_inq_region (fake_ldr_process, lm->module_info.lmi_modid,
|
||||
i, ®ion_info, sizeof (region_info),
|
||||
&retsize) != 0)
|
||||
break;
|
||||
region_offset = (CORE_ADDR) region_info.lri_mapaddr
|
||||
- (CORE_ADDR) region_info.lri_vaddr;
|
||||
if (i == 0)
|
||||
LM_OFFSET (so_list_ptr) = region_offset;
|
||||
else if (LM_OFFSET (so_list_ptr) != region_offset)
|
||||
warning ("cannot handle shared library relocation for %s (%s)",
|
||||
so_list_ptr->so_name, region_info.lri_name);
|
||||
}
|
||||
#else
|
||||
int errcode;
|
||||
char *buffer;
|
||||
target_read_string ((CORE_ADDR) LM_NAME (so_list_ptr), &buffer,
|
||||
MAX_PATH_SIZE - 1, &errcode);
|
||||
if (errcode != 0)
|
||||
error ("xfer_link_map_member: Can't read pathname for load map: %s\n",
|
||||
safe_strerror (errcode));
|
||||
strncpy (so_list_ptr->so_name, buffer, MAX_PATH_SIZE - 1);
|
||||
xfree (buffer);
|
||||
so_list_ptr->so_name[MAX_PATH_SIZE - 1] = '\0';
|
||||
|
||||
for (i = 0; i < lm->module_info.region_count; i++)
|
||||
{
|
||||
ldr_region_info_t region_info;
|
||||
CORE_ADDR region_offset;
|
||||
|
||||
if (target_read_memory (lm->module_info.regioninfo_addr
|
||||
+ i * sizeof (region_info),
|
||||
(char *) ®ion_info,
|
||||
sizeof (region_info)) != 0)
|
||||
break;
|
||||
region_offset = region_info.mapaddr - region_info.vaddr;
|
||||
if (i == 0)
|
||||
LM_OFFSET (so_list_ptr) = region_offset;
|
||||
else if (LM_OFFSET (so_list_ptr) != region_offset)
|
||||
{
|
||||
char *region_name;
|
||||
target_read_string (region_info.regionname_addr, &buffer,
|
||||
MAX_PATH_SIZE - 1, &errcode);
|
||||
if (errcode == 0)
|
||||
region_name = buffer;
|
||||
else
|
||||
region_name = "??";
|
||||
warning ("cannot handle shared library relocation for %s (%s)",
|
||||
so_list_ptr->so_name, region_name);
|
||||
xfree (buffer);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
catch_errors (solib_map_sections, (char *) so_list_ptr,
|
||||
"Error while mapping shared library sections:\n",
|
||||
RETURN_MASK_ALL);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
LOCAL FUNCTION
|
||||
|
||||
find_solib -- step through list of shared objects
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
struct so_list *find_solib (struct so_list *so_list_ptr)
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
This module contains the routine which finds the names of any
|
||||
loaded "images" in the current process. The argument in must be
|
||||
NULL on the first call, and then the returned value must be passed
|
||||
in on subsequent calls. This provides the capability to "step" down
|
||||
the list of loaded objects. On the last object, a NULL value is
|
||||
returned.
|
||||
|
||||
The arg and return value are "struct link_map" pointers, as defined
|
||||
in <link.h>.
|
||||
*/
|
||||
|
||||
static struct so_list *
|
||||
find_solib (struct so_list *so_list_ptr)
|
||||
{
|
||||
struct so_list *so_list_next = NULL;
|
||||
struct link_map *lm = NULL;
|
||||
struct so_list *new;
|
||||
|
||||
if (so_list_ptr == NULL)
|
||||
{
|
||||
/* We are setting up for a new scan through the loaded images. */
|
||||
if ((so_list_next = so_list_head) == NULL)
|
||||
{
|
||||
/* Find the first link map list member. */
|
||||
lm = first_link_map_member ();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We have been called before, and are in the process of walking
|
||||
the shared library list. Advance to the next shared object. */
|
||||
lm = next_link_map_member (so_list_ptr);
|
||||
so_list_next = so_list_ptr->next;
|
||||
}
|
||||
if ((so_list_next == NULL) && (lm != NULL))
|
||||
{
|
||||
/* Get next link map structure from inferior image and build a local
|
||||
abbreviated load_map structure */
|
||||
new = (struct so_list *) xmalloc (sizeof (struct so_list));
|
||||
memset ((char *) new, 0, sizeof (struct so_list));
|
||||
new->lmaddr = lm;
|
||||
/* Add the new node as the next node in the list, or as the root
|
||||
node if this is the first one. */
|
||||
if (so_list_ptr != NULL)
|
||||
{
|
||||
so_list_ptr->next = new;
|
||||
}
|
||||
else
|
||||
{
|
||||
so_list_head = new;
|
||||
}
|
||||
so_list_next = new;
|
||||
xfer_link_map_member (new, lm);
|
||||
}
|
||||
return (so_list_next);
|
||||
}
|
||||
|
||||
/* A small stub to get us past the arg-passing pinhole of catch_errors. */
|
||||
|
||||
static int
|
||||
symbol_add_stub (char *arg)
|
||||
{
|
||||
register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
|
||||
CORE_ADDR text_addr = 0;
|
||||
struct section_addr_info section_addrs;
|
||||
|
||||
memset (§ion_addrs, 0, sizeof (section_addrs));
|
||||
if (so->textsection)
|
||||
text_addr = so->textsection->addr;
|
||||
else if (so->abfd != NULL)
|
||||
{
|
||||
asection *lowest_sect;
|
||||
|
||||
/* If we didn't find a mapped non zero sized .text section, set up
|
||||
text_addr so that the relocation in symbol_file_add does no harm. */
|
||||
|
||||
lowest_sect = bfd_get_section_by_name (so->abfd, ".text");
|
||||
if (lowest_sect == NULL)
|
||||
bfd_map_over_sections (so->abfd, find_lowest_section,
|
||||
(PTR) &lowest_sect);
|
||||
if (lowest_sect)
|
||||
text_addr = bfd_section_vma (so->abfd, lowest_sect) + LM_OFFSET (so);
|
||||
}
|
||||
|
||||
section_addrs.other[0].addr = text_addr;
|
||||
section_addrs.other[0].name = ".text";
|
||||
so->objfile = symbol_file_add (so->so_name, so->from_tty,
|
||||
§ion_addrs, 0, OBJF_SHARED);
|
||||
return (1);
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
GLOBAL FUNCTION
|
||||
|
||||
solib_add -- add a shared library file to the symtab and section list
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
void solib_add (char *arg_string, int from_tty,
|
||||
struct target_ops *target, int readsyms)
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
*/
|
||||
|
||||
void
|
||||
solib_add (char *arg_string, int from_tty, struct target_ops *target, int readsyms)
|
||||
{
|
||||
register struct so_list *so = NULL; /* link map state variable */
|
||||
|
||||
/* Last shared library that we read. */
|
||||
struct so_list *so_last = NULL;
|
||||
|
||||
char *re_err;
|
||||
int count;
|
||||
int old;
|
||||
|
||||
if (!readsyms)
|
||||
return;
|
||||
|
||||
if ((re_err = re_comp (arg_string ? arg_string : ".")) != NULL)
|
||||
{
|
||||
error ("Invalid regexp: %s", re_err);
|
||||
}
|
||||
|
||||
|
||||
/* Add the shared library sections to the section table of the
|
||||
specified target, if any. */
|
||||
if (target)
|
||||
{
|
||||
/* Count how many new section_table entries there are. */
|
||||
so = NULL;
|
||||
count = 0;
|
||||
while ((so = find_solib (so)) != NULL)
|
||||
{
|
||||
if (so->so_name[0])
|
||||
{
|
||||
count += so->sections_end - so->sections;
|
||||
}
|
||||
}
|
||||
|
||||
if (count)
|
||||
{
|
||||
/* Add these section table entries to the target's table. */
|
||||
|
||||
old = target_resize_to_sections (target, count);
|
||||
|
||||
while ((so = find_solib (so)) != NULL)
|
||||
{
|
||||
if (so->so_name[0])
|
||||
{
|
||||
count = so->sections_end - so->sections;
|
||||
memcpy ((char *) (target->to_sections + old),
|
||||
so->sections,
|
||||
(sizeof (struct section_table)) * count);
|
||||
old += count;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Now add the symbol files. */
|
||||
so = NULL;
|
||||
while ((so = find_solib (so)) != NULL)
|
||||
{
|
||||
if (so->so_name[0] && re_exec (so->so_name))
|
||||
{
|
||||
so->from_tty = from_tty;
|
||||
if (so->symbols_loaded)
|
||||
{
|
||||
if (from_tty)
|
||||
{
|
||||
printf_unfiltered ("Symbols already loaded for %s\n", so->so_name);
|
||||
}
|
||||
}
|
||||
else if (catch_errors
|
||||
(symbol_add_stub, (char *) so,
|
||||
"Error while reading shared library symbols:\n",
|
||||
RETURN_MASK_ALL))
|
||||
{
|
||||
so_last = so;
|
||||
so->symbols_loaded = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Getting new symbols may change our opinion about what is
|
||||
frameless. */
|
||||
if (so_last)
|
||||
reinit_frame_cache ();
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
LOCAL FUNCTION
|
||||
|
||||
info_sharedlibrary_command -- code for "info sharedlibrary"
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
static void info_sharedlibrary_command ()
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
Walk through the shared library list and print information
|
||||
about each attached library.
|
||||
*/
|
||||
|
||||
static void
|
||||
info_sharedlibrary_command (char *ignore, int from_tty)
|
||||
{
|
||||
register struct so_list *so = NULL; /* link map state variable */
|
||||
int header_done = 0;
|
||||
|
||||
if (exec_bfd == NULL)
|
||||
{
|
||||
printf_unfiltered ("No executable file.\n");
|
||||
return;
|
||||
}
|
||||
while ((so = find_solib (so)) != NULL)
|
||||
{
|
||||
if (so->so_name[0])
|
||||
{
|
||||
unsigned long txt_start = 0;
|
||||
unsigned long txt_end = 0;
|
||||
|
||||
if (!header_done)
|
||||
{
|
||||
printf_unfiltered ("%-20s%-20s%-12s%s\n", "From", "To", "Syms Read",
|
||||
"Shared Object Library");
|
||||
header_done++;
|
||||
}
|
||||
if (so->textsection)
|
||||
{
|
||||
txt_start = (unsigned long) so->textsection->addr;
|
||||
txt_end = (unsigned long) so->textsection->endaddr;
|
||||
}
|
||||
printf_unfiltered ("%-20s", local_hex_string_custom (txt_start, "08l"));
|
||||
printf_unfiltered ("%-20s", local_hex_string_custom (txt_end, "08l"));
|
||||
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
||||
printf_unfiltered ("%s\n", so->so_name);
|
||||
}
|
||||
}
|
||||
if (so_list_head == NULL)
|
||||
{
|
||||
printf_unfiltered ("No shared libraries loaded at this time.\n");
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
GLOBAL FUNCTION
|
||||
|
||||
solib_address -- check to see if an address is in a shared lib
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
char *solib_address (CORE_ADDR address)
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
Provides a hook for other gdb routines to discover whether or
|
||||
not a particular address is within the mapped address space of
|
||||
a shared library. Any address between the base mapping address
|
||||
and the first address beyond the end of the last mapping, is
|
||||
considered to be within the shared library address space, for
|
||||
our purposes.
|
||||
|
||||
For example, this routine is called at one point to disable
|
||||
breakpoints which are in shared libraries that are not currently
|
||||
mapped in.
|
||||
*/
|
||||
|
||||
char *
|
||||
solib_address (CORE_ADDR address)
|
||||
{
|
||||
register struct so_list *so = 0; /* link map state variable */
|
||||
|
||||
while ((so = find_solib (so)) != NULL)
|
||||
{
|
||||
if (so->so_name[0] && so->textsection)
|
||||
{
|
||||
if ((address >= (CORE_ADDR) so->textsection->addr) &&
|
||||
(address < (CORE_ADDR) so->textsection->endaddr))
|
||||
return (so->so_name);
|
||||
}
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
/* Called by free_all_symtabs */
|
||||
|
||||
void
|
||||
clear_solib (void)
|
||||
{
|
||||
struct so_list *next;
|
||||
char *bfd_filename;
|
||||
|
||||
disable_breakpoints_in_shlibs (1);
|
||||
|
||||
while (so_list_head)
|
||||
{
|
||||
if (so_list_head->sections)
|
||||
{
|
||||
xfree (so_list_head->sections);
|
||||
}
|
||||
if (so_list_head->abfd)
|
||||
{
|
||||
remove_target_sections (so_list_head->abfd);
|
||||
bfd_filename = bfd_get_filename (so_list_head->abfd);
|
||||
if (!bfd_close (so_list_head->abfd))
|
||||
warning ("cannot close \"%s\": %s",
|
||||
bfd_filename, bfd_errmsg (bfd_get_error ()));
|
||||
}
|
||||
else
|
||||
/* This happens for the executable on SVR4. */
|
||||
bfd_filename = NULL;
|
||||
|
||||
next = so_list_head->next;
|
||||
if (bfd_filename)
|
||||
xfree (bfd_filename);
|
||||
xfree (so_list_head);
|
||||
so_list_head = next;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
GLOBAL FUNCTION
|
||||
|
||||
solib_create_inferior_hook -- shared library startup support
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
void solib_create_inferior_hook()
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
When gdb starts up the inferior, it nurses it along (through the
|
||||
shell) until it is ready to execute it's first instruction. At this
|
||||
point, this function gets called via expansion of the macro
|
||||
SOLIB_CREATE_INFERIOR_HOOK.
|
||||
For a statically bound executable, this first instruction is the
|
||||
one at "_start", or a similar text label. No further processing is
|
||||
needed in that case.
|
||||
For a dynamically bound executable, this first instruction is somewhere
|
||||
in the rld, and the actual user executable is not yet mapped in.
|
||||
We continue the inferior again, rld then maps in the actual user
|
||||
executable and any needed shared libraries and then sends
|
||||
itself a SIGTRAP.
|
||||
At that point we discover the names of all shared libraries and
|
||||
read their symbols in.
|
||||
|
||||
FIXME
|
||||
|
||||
This code does not properly handle hitting breakpoints which the
|
||||
user might have set in the rld itself. Proper handling would have
|
||||
to check if the SIGTRAP happened due to a kill call.
|
||||
|
||||
Also, what if child has exit()ed? Must exit loop somehow.
|
||||
*/
|
||||
|
||||
void
|
||||
solib_create_inferior_hook (void)
|
||||
{
|
||||
|
||||
/* Nothing to do for statically bound executables. */
|
||||
|
||||
if (symfile_objfile == NULL
|
||||
|| symfile_objfile->obfd == NULL
|
||||
|| ((bfd_get_file_flags (symfile_objfile->obfd) & DYNAMIC) == 0))
|
||||
return;
|
||||
|
||||
/* Now run the target. It will eventually get a SIGTRAP, at
|
||||
which point all of the libraries will have been mapped in and we
|
||||
can go groveling around in the rld structures to find
|
||||
out what we need to know about them. */
|
||||
|
||||
clear_proceed_status ();
|
||||
stop_soon_quietly = 1;
|
||||
stop_signal = TARGET_SIGNAL_0;
|
||||
do
|
||||
{
|
||||
target_resume (minus_one_ptid, 0, stop_signal);
|
||||
wait_for_inferior ();
|
||||
}
|
||||
while (stop_signal != TARGET_SIGNAL_TRAP);
|
||||
|
||||
/* solib_add will call reinit_frame_cache.
|
||||
But we are stopped in the runtime loader and we do not have symbols
|
||||
for the runtime loader. So heuristic_proc_start will be called
|
||||
and will put out an annoying warning.
|
||||
Delaying the resetting of stop_soon_quietly until after symbol loading
|
||||
suppresses the warning. */
|
||||
solib_add ((char *) 0, 0, (struct target_ops *) 0, auto_solib_add);
|
||||
stop_soon_quietly = 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
|
||||
LOCAL FUNCTION
|
||||
|
||||
sharedlibrary_command -- handle command to explicitly add library
|
||||
|
||||
SYNOPSIS
|
||||
|
||||
static void sharedlibrary_command (char *args, int from_tty)
|
||||
|
||||
DESCRIPTION
|
||||
|
||||
*/
|
||||
|
||||
static void
|
||||
sharedlibrary_command (char *args, int from_tty)
|
||||
{
|
||||
dont_repeat ();
|
||||
solib_add (args, from_tty, (struct target_ops *) 0, 1);
|
||||
}
|
||||
|
||||
void
|
||||
_initialize_solib (void)
|
||||
{
|
||||
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
||||
"Load shared object library symbols for files matching REGEXP.");
|
||||
add_info ("sharedlibrary", info_sharedlibrary_command,
|
||||
"Status of loaded shared object libraries.");
|
||||
|
||||
add_show_from_set
|
||||
(add_set_cmd ("auto-solib-add", class_support, var_boolean,
|
||||
(char *) &auto_solib_add,
|
||||
"Set autoloading of shared library symbols.\n\
|
||||
If \"on\", symbols from all shared object libraries will be loaded\n\
|
||||
automatically when the inferior begins execution, when the dynamic linker\n\
|
||||
informs gdb that a new library has been loaded, or when attaching to the\n\
|
||||
inferior. Otherwise, symbols must be loaded manually, using `sharedlibrary'.",
|
||||
&setlist),
|
||||
&showlist);
|
||||
}
|
Loading…
Reference in New Issue