/* Handle OSF/1 shared libraries for GDB, the GNU Debugger.
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/* Handle OSF/1 shared libraries for GDB, the GNU Debugger.
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Copyright 1993, 94, 95, 96, 98, 1999 Free Software Foundation, Inc.
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Copyright 1993, 94, 95, 96, 98, 1999 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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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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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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/* 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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next_link_map_member and xfer_link_map_member in solib.c. */
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#include "defs.h"
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#include "defs.h"
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#include <sys/types.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <signal.h>
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include <fcntl.h>
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#include <fcntl.h>
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#include "symtab.h"
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#include "symtab.h"
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#include "bfd.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "objfiles.h"
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#include "gdbcore.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "command.h"
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#include "target.h"
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#include "target.h"
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#include "frame.h"
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#include "frame.h"
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#include "gdb_regex.h"
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#include "gdb_regex.h"
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#include "inferior.h"
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#include "inferior.h"
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#include "language.h"
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#include "language.h"
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#include "gdbcmd.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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#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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/* 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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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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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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(to relocate them properly from their prelinked addresses to the
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current load address).
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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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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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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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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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header files. The definitions below were obtained by experimentation,
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but they seem stable enough.
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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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2) Use the undocumented libxproc.a library, which contains the
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equivalent ldr_* routines.
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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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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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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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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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linker specification for GDB and all applications that are using
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libgdb.
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libgdb.
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We will use the peeking approach until it becomes unwieldy. */
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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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#ifndef USE_LDR_ROUTINES
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/* Definition of runtime loader structures, found by experimentation. */
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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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#define RLD_CONTEXT_ADDRESS 0x3ffc0000000
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typedef struct
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typedef struct
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{
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{
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CORE_ADDR next;
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CORE_ADDR next;
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CORE_ADDR previous;
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CORE_ADDR previous;
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CORE_ADDR unknown1;
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CORE_ADDR unknown1;
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char *module_name;
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char *module_name;
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CORE_ADDR modinfo_addr;
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CORE_ADDR modinfo_addr;
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long module_id;
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long module_id;
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CORE_ADDR unknown2;
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CORE_ADDR unknown2;
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CORE_ADDR unknown3;
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CORE_ADDR unknown3;
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long region_count;
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long region_count;
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CORE_ADDR regioninfo_addr;
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CORE_ADDR regioninfo_addr;
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}
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}
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ldr_module_info_t;
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ldr_module_info_t;
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typedef struct
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typedef struct
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{
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{
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long unknown1;
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long unknown1;
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CORE_ADDR regionname_addr;
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CORE_ADDR regionname_addr;
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long protection;
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long protection;
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CORE_ADDR vaddr;
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CORE_ADDR vaddr;
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CORE_ADDR mapaddr;
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CORE_ADDR mapaddr;
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long size;
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long size;
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long unknown2[5];
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long unknown2[5];
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}
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}
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ldr_region_info_t;
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ldr_region_info_t;
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typedef struct
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typedef struct
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{
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{
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CORE_ADDR unknown1;
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CORE_ADDR unknown1;
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CORE_ADDR unknown2;
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CORE_ADDR unknown2;
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CORE_ADDR head;
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CORE_ADDR head;
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CORE_ADDR tail;
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CORE_ADDR tail;
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}
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}
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ldr_context_t;
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ldr_context_t;
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static ldr_context_t ldr_context;
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static ldr_context_t ldr_context;
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#else
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#else
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#include <loader.h>
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#include <loader.h>
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static ldr_process_t fake_ldr_process;
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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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/* Called by ldr_* routines to read memory from the current target. */
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static int ldr_read_memory PARAMS ((CORE_ADDR, char *, int, int));
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static int ldr_read_memory PARAMS ((CORE_ADDR, char *, int, int));
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static int
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static int
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ldr_read_memory (memaddr, myaddr, len, readstring)
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ldr_read_memory (memaddr, myaddr, len, readstring)
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CORE_ADDR memaddr;
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CORE_ADDR memaddr;
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char *myaddr;
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char *myaddr;
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int len;
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int len;
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int readstring;
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int readstring;
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{
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{
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int result;
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int result;
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char *buffer;
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char *buffer;
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if (readstring)
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if (readstring)
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{
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{
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target_read_string (memaddr, &buffer, len, &result);
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target_read_string (memaddr, &buffer, len, &result);
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if (result == 0)
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if (result == 0)
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strcpy (myaddr, buffer);
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strcpy (myaddr, buffer);
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free (buffer);
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free (buffer);
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}
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}
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else
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else
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result = target_read_memory (memaddr, myaddr, len);
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result = target_read_memory (memaddr, myaddr, len);
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if (result != 0)
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if (result != 0)
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result = -result;
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result = -result;
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return result;
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return result;
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}
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}
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#endif
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#endif
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/* Define our own link_map structure.
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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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This will help to share code with solib.c. */
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struct link_map
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struct link_map
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{
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{
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CORE_ADDR l_offset; /* prelink to load address offset */
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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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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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ldr_module_info_t module_info; /* corresponding module info */
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};
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};
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#define LM_OFFSET(so) ((so) -> lm.l_offset)
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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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#define LM_NAME(so) ((so) -> lm.l_name)
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struct so_list
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struct so_list
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{
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{
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struct so_list *next; /* next structure in linked list */
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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 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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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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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 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 symbols_loaded; /* flag: symbols read in yet? */
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char from_tty; /* flag: print msgs? */
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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 objfile *objfile; /* objfile for loaded lib */
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struct section_table *sections;
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struct section_table *sections;
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struct section_table *sections_end;
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struct section_table *sections_end;
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struct section_table *textsection;
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struct section_table *textsection;
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bfd *abfd;
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bfd *abfd;
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};
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};
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static struct so_list *so_list_head; /* List of known shared objects */
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static struct so_list *so_list_head; /* List of known shared objects */
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extern int
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extern int
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fdmatch PARAMS ((int, int)); /* In libiberty */
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fdmatch PARAMS ((int, int)); /* In libiberty */
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/* Local function prototypes */
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/* Local function prototypes */
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static void
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static void
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sharedlibrary_command PARAMS ((char *, int));
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sharedlibrary_command PARAMS ((char *, int));
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static void
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static void
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info_sharedlibrary_command PARAMS ((char *, int));
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info_sharedlibrary_command PARAMS ((char *, int));
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static int
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static int
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symbol_add_stub PARAMS ((char *));
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symbol_add_stub PARAMS ((char *));
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static struct so_list *
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static struct so_list *
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find_solib PARAMS ((struct so_list *));
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find_solib PARAMS ((struct so_list *));
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static struct link_map *
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static struct link_map *
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first_link_map_member PARAMS ((void));
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first_link_map_member PARAMS ((void));
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static struct link_map *
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static struct link_map *
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next_link_map_member PARAMS ((struct so_list *));
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next_link_map_member PARAMS ((struct so_list *));
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static void
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static void
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xfer_link_map_member PARAMS ((struct so_list *, struct link_map *));
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xfer_link_map_member PARAMS ((struct so_list *, struct link_map *));
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static int
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static int
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solib_map_sections PARAMS ((char *));
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solib_map_sections PARAMS ((char *));
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/*
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/*
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LOCAL FUNCTION
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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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solib_map_sections -- open bfd and build sections for shared lib
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SYNOPSIS
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SYNOPSIS
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static int solib_map_sections (struct so_list *so)
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static int solib_map_sections (struct so_list *so)
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DESCRIPTION
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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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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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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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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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relocate all the section addresses by the base address at
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which the shared object was mapped.
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which the shared object was mapped.
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FIXMES
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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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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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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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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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mechanism correctly in the below code (particularly the tilde
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expansion stuff?).
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expansion stuff?).
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*/
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*/
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static int
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static int
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solib_map_sections (arg)
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solib_map_sections (arg)
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char *arg;
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char *arg;
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{
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{
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struct so_list *so = (struct so_list *) arg; /* catch_errors bogon */
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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 *filename;
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char *scratch_pathname;
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char *scratch_pathname;
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int scratch_chan;
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int scratch_chan;
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struct section_table *p;
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struct section_table *p;
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struct cleanup *old_chain;
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struct cleanup *old_chain;
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bfd *abfd;
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bfd *abfd;
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filename = tilde_expand (so->so_name);
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filename = tilde_expand (so->so_name);
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old_chain = make_cleanup (free, filename);
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old_chain = make_cleanup (free, filename);
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scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
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scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
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&scratch_pathname);
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&scratch_pathname);
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if (scratch_chan < 0)
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if (scratch_chan < 0)
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{
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{
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scratch_chan = openp (getenv ("LD_LIBRARY_PATH"), 1, filename,
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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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O_RDONLY, 0, &scratch_pathname);
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}
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}
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if (scratch_chan < 0)
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if (scratch_chan < 0)
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{
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{
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perror_with_name (filename);
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perror_with_name (filename);
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}
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}
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/* Leave scratch_pathname allocated. bfd->name will point to it. */
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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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abfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
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if (!abfd)
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if (!abfd)
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{
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{
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close (scratch_chan);
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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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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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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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}
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/* Leave bfd open, core_xfer_memory and "info files" need it. */
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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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so->abfd = abfd;
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abfd->cacheable = true;
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abfd->cacheable = true;
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if (!bfd_check_format (abfd, bfd_object))
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if (!bfd_check_format (abfd, bfd_object))
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{
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{
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error ("\"%s\": not in executable format: %s.",
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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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scratch_pathname, bfd_errmsg (bfd_get_error ()));
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}
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}
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if (build_section_table (abfd, &so->sections, &so->sections_end))
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if (build_section_table (abfd, &so->sections, &so->sections_end))
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{
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{
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error ("Can't find the file sections in `%s': %s",
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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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bfd_get_filename (exec_bfd), bfd_errmsg (bfd_get_error ()));
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}
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}
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for (p = so->sections; p < so->sections_end; p++)
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for (p = so->sections; p < so->sections_end; p++)
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{
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{
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/* Relocate the section binding addresses as recorded in the shared
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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's file by the offset to get the address to which the
|
object was actually mapped. */
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object was actually mapped. */
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p->addr += LM_OFFSET (so);
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p->addr += LM_OFFSET (so);
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p->endaddr += 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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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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if (STREQ (p->the_bfd_section->name, ".text"))
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{
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{
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so->textsection = p;
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so->textsection = p;
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}
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}
|
}
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}
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|
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/* Free the file names, close the file now. */
|
/* Free the file names, close the file now. */
|
do_cleanups (old_chain);
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do_cleanups (old_chain);
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|
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return (1);
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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
|
LOCAL FUNCTION
|
|
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first_link_map_member -- locate first member in dynamic linker's map
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first_link_map_member -- locate first member in dynamic linker's map
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SYNOPSIS
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SYNOPSIS
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static struct link_map *first_link_map_member (void)
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static struct link_map *first_link_map_member (void)
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|
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DESCRIPTION
|
DESCRIPTION
|
|
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Read in a copy of the first member in the inferior's dynamic
|
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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link map from the inferior's dynamic linker structures, and return
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a pointer to the copy in our address space.
|
a pointer to the copy in our address space.
|
*/
|
*/
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|
|
static struct link_map *
|
static struct link_map *
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first_link_map_member ()
|
first_link_map_member ()
|
{
|
{
|
struct link_map *lm = NULL;
|
struct link_map *lm = NULL;
|
static struct link_map first_lm;
|
static struct link_map first_lm;
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|
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
ldr_module_t mod_id = LDR_NULL_MODULE;
|
ldr_module_t mod_id = LDR_NULL_MODULE;
|
size_t retsize;
|
size_t retsize;
|
|
|
fake_ldr_process = ldr_core_process ();
|
fake_ldr_process = ldr_core_process ();
|
ldr_set_core_reader (ldr_read_memory);
|
ldr_set_core_reader (ldr_read_memory);
|
ldr_xdetach (fake_ldr_process);
|
ldr_xdetach (fake_ldr_process);
|
if (ldr_xattach (fake_ldr_process) != 0
|
if (ldr_xattach (fake_ldr_process) != 0
|
|| ldr_next_module (fake_ldr_process, &mod_id) != 0
|
|| ldr_next_module (fake_ldr_process, &mod_id) != 0
|
|| mod_id == LDR_NULL_MODULE
|
|| mod_id == LDR_NULL_MODULE
|
|| ldr_inq_module (fake_ldr_process, mod_id,
|
|| ldr_inq_module (fake_ldr_process, mod_id,
|
&first_lm.module_info, sizeof (ldr_module_info_t),
|
&first_lm.module_info, sizeof (ldr_module_info_t),
|
&retsize) != 0)
|
&retsize) != 0)
|
return lm;
|
return lm;
|
#else
|
#else
|
CORE_ADDR ldr_context_addr;
|
CORE_ADDR ldr_context_addr;
|
|
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
(char *) &ldr_context_addr,
|
(char *) &ldr_context_addr,
|
sizeof (CORE_ADDR)) != 0
|
sizeof (CORE_ADDR)) != 0
|
|| target_read_memory (ldr_context_addr,
|
|| target_read_memory (ldr_context_addr,
|
(char *) &ldr_context,
|
(char *) &ldr_context,
|
sizeof (ldr_context_t)) != 0
|
sizeof (ldr_context_t)) != 0
|
|| target_read_memory ((CORE_ADDR) ldr_context.head,
|
|| target_read_memory ((CORE_ADDR) ldr_context.head,
|
(char *) &first_lm.module_info,
|
(char *) &first_lm.module_info,
|
sizeof (ldr_module_info_t)) != 0)
|
sizeof (ldr_module_info_t)) != 0)
|
return lm;
|
return lm;
|
#endif
|
#endif
|
|
|
lm = &first_lm;
|
lm = &first_lm;
|
|
|
/* The first entry is for the main program and should be skipped. */
|
/* The first entry is for the main program and should be skipped. */
|
lm->l_name = NULL;
|
lm->l_name = NULL;
|
|
|
return lm;
|
return lm;
|
}
|
}
|
|
|
static struct link_map *
|
static struct link_map *
|
next_link_map_member (so_list_ptr)
|
next_link_map_member (so_list_ptr)
|
struct so_list *so_list_ptr;
|
struct so_list *so_list_ptr;
|
{
|
{
|
struct link_map *lm = NULL;
|
struct link_map *lm = NULL;
|
static struct link_map next_lm;
|
static struct link_map next_lm;
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
ldr_module_t mod_id = so_list_ptr->lm.module_info.lmi_modid;
|
ldr_module_t mod_id = so_list_ptr->lm.module_info.lmi_modid;
|
size_t retsize;
|
size_t retsize;
|
|
|
if (ldr_next_module (fake_ldr_process, &mod_id) != 0
|
if (ldr_next_module (fake_ldr_process, &mod_id) != 0
|
|| mod_id == LDR_NULL_MODULE
|
|| mod_id == LDR_NULL_MODULE
|
|| ldr_inq_module (fake_ldr_process, mod_id,
|
|| ldr_inq_module (fake_ldr_process, mod_id,
|
&next_lm.module_info, sizeof (ldr_module_info_t),
|
&next_lm.module_info, sizeof (ldr_module_info_t),
|
&retsize) != 0)
|
&retsize) != 0)
|
return lm;
|
return lm;
|
|
|
lm = &next_lm;
|
lm = &next_lm;
|
lm->l_name = lm->module_info.lmi_name;
|
lm->l_name = lm->module_info.lmi_name;
|
#else
|
#else
|
CORE_ADDR ldr_context_addr;
|
CORE_ADDR ldr_context_addr;
|
|
|
/* Reread context in case ldr_context.tail was updated. */
|
/* Reread context in case ldr_context.tail was updated. */
|
|
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
if (target_read_memory ((CORE_ADDR) RLD_CONTEXT_ADDRESS,
|
(char *) &ldr_context_addr,
|
(char *) &ldr_context_addr,
|
sizeof (CORE_ADDR)) != 0
|
sizeof (CORE_ADDR)) != 0
|
|| target_read_memory (ldr_context_addr,
|
|| target_read_memory (ldr_context_addr,
|
(char *) &ldr_context,
|
(char *) &ldr_context,
|
sizeof (ldr_context_t)) != 0
|
sizeof (ldr_context_t)) != 0
|
|| so_list_ptr->lm.module_info.modinfo_addr == ldr_context.tail
|
|| so_list_ptr->lm.module_info.modinfo_addr == ldr_context.tail
|
|| target_read_memory (so_list_ptr->lm.module_info.next,
|
|| target_read_memory (so_list_ptr->lm.module_info.next,
|
(char *) &next_lm.module_info,
|
(char *) &next_lm.module_info,
|
sizeof (ldr_module_info_t)) != 0)
|
sizeof (ldr_module_info_t)) != 0)
|
return lm;
|
return lm;
|
|
|
lm = &next_lm;
|
lm = &next_lm;
|
lm->l_name = lm->module_info.module_name;
|
lm->l_name = lm->module_info.module_name;
|
#endif
|
#endif
|
return lm;
|
return lm;
|
}
|
}
|
|
|
static void
|
static void
|
xfer_link_map_member (so_list_ptr, lm)
|
xfer_link_map_member (so_list_ptr, lm)
|
struct so_list *so_list_ptr;
|
struct so_list *so_list_ptr;
|
struct link_map *lm;
|
struct link_map *lm;
|
{
|
{
|
int i;
|
int i;
|
so_list_ptr->lm = *lm;
|
so_list_ptr->lm = *lm;
|
|
|
/* OSF/1 shared libraries are pre-linked to particular addresses,
|
/* OSF/1 shared libraries are pre-linked to particular addresses,
|
but the runtime loader may have to relocate them if the
|
but the runtime loader may have to relocate them if the
|
address ranges of the libraries used by the target executable clash,
|
address ranges of the libraries used by the target executable clash,
|
or if the target executable is linked with the -taso option.
|
or if the target executable is linked with the -taso option.
|
The offset is the difference between the address where the shared
|
The offset is the difference between the address where the shared
|
library is mapped and the pre-linked address of the shared library.
|
library is mapped and the pre-linked address of the shared library.
|
|
|
FIXME: GDB is currently unable to relocate the shared library
|
FIXME: GDB is currently unable to relocate the shared library
|
sections by different offsets. If sections are relocated by
|
sections by different offsets. If sections are relocated by
|
different offsets, put out a warning and use the offset of the
|
different offsets, put out a warning and use the offset of the
|
first section for all remaining sections. */
|
first section for all remaining sections. */
|
LM_OFFSET (so_list_ptr) = 0;
|
LM_OFFSET (so_list_ptr) = 0;
|
|
|
/* There is one entry that has no name (for the inferior executable)
|
/* There is one entry that has no name (for the inferior executable)
|
since it is not a shared object. */
|
since it is not a shared object. */
|
if (LM_NAME (so_list_ptr) != 0)
|
if (LM_NAME (so_list_ptr) != 0)
|
{
|
{
|
|
|
#ifdef USE_LDR_ROUTINES
|
#ifdef USE_LDR_ROUTINES
|
int len = strlen (LM_NAME (so_list_ptr) + 1);
|
int len = strlen (LM_NAME (so_list_ptr) + 1);
|
|
|
if (len > MAX_PATH_SIZE)
|
if (len > MAX_PATH_SIZE)
|
len = MAX_PATH_SIZE;
|
len = MAX_PATH_SIZE;
|
strncpy (so_list_ptr->so_name, LM_NAME (so_list_ptr), 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';
|
so_list_ptr->so_name[MAX_PATH_SIZE - 1] = '\0';
|
|
|
for (i = 0; i < lm->module_info.lmi_nregion; i++)
|
for (i = 0; i < lm->module_info.lmi_nregion; i++)
|
{
|
{
|
ldr_region_info_t region_info;
|
ldr_region_info_t region_info;
|
size_t retsize;
|
size_t retsize;
|
CORE_ADDR region_offset;
|
CORE_ADDR region_offset;
|
|
|
if (ldr_inq_region (fake_ldr_process, lm->module_info.lmi_modid,
|
if (ldr_inq_region (fake_ldr_process, lm->module_info.lmi_modid,
|
i, ®ion_info, sizeof (region_info),
|
i, ®ion_info, sizeof (region_info),
|
&retsize) != 0)
|
&retsize) != 0)
|
break;
|
break;
|
region_offset = (CORE_ADDR) region_info.lri_mapaddr
|
region_offset = (CORE_ADDR) region_info.lri_mapaddr
|
- (CORE_ADDR) region_info.lri_vaddr;
|
- (CORE_ADDR) region_info.lri_vaddr;
|
if (i == 0)
|
if (i == 0)
|
LM_OFFSET (so_list_ptr) = region_offset;
|
LM_OFFSET (so_list_ptr) = region_offset;
|
else if (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)",
|
warning ("cannot handle shared library relocation for %s (%s)",
|
so_list_ptr->so_name, region_info.lri_name);
|
so_list_ptr->so_name, region_info.lri_name);
|
}
|
}
|
#else
|
#else
|
int errcode;
|
int errcode;
|
char *buffer;
|
char *buffer;
|
target_read_string ((CORE_ADDR) LM_NAME (so_list_ptr), &buffer,
|
target_read_string ((CORE_ADDR) LM_NAME (so_list_ptr), &buffer,
|
MAX_PATH_SIZE - 1, &errcode);
|
MAX_PATH_SIZE - 1, &errcode);
|
if (errcode != 0)
|
if (errcode != 0)
|
error ("xfer_link_map_member: Can't read pathname for load map: %s\n",
|
error ("xfer_link_map_member: Can't read pathname for load map: %s\n",
|
safe_strerror (errcode));
|
safe_strerror (errcode));
|
strncpy (so_list_ptr->so_name, buffer, MAX_PATH_SIZE - 1);
|
strncpy (so_list_ptr->so_name, buffer, MAX_PATH_SIZE - 1);
|
free (buffer);
|
free (buffer);
|
so_list_ptr->so_name[MAX_PATH_SIZE - 1] = '\0';
|
so_list_ptr->so_name[MAX_PATH_SIZE - 1] = '\0';
|
|
|
for (i = 0; i < lm->module_info.region_count; i++)
|
for (i = 0; i < lm->module_info.region_count; i++)
|
{
|
{
|
ldr_region_info_t region_info;
|
ldr_region_info_t region_info;
|
CORE_ADDR region_offset;
|
CORE_ADDR region_offset;
|
|
|
if (target_read_memory (lm->module_info.regioninfo_addr
|
if (target_read_memory (lm->module_info.regioninfo_addr
|
+ i * sizeof (region_info),
|
+ i * sizeof (region_info),
|
(char *) ®ion_info,
|
(char *) ®ion_info,
|
sizeof (region_info)) != 0)
|
sizeof (region_info)) != 0)
|
break;
|
break;
|
region_offset = region_info.mapaddr - region_info.vaddr;
|
region_offset = region_info.mapaddr - region_info.vaddr;
|
if (i == 0)
|
if (i == 0)
|
LM_OFFSET (so_list_ptr) = region_offset;
|
LM_OFFSET (so_list_ptr) = region_offset;
|
else if (LM_OFFSET (so_list_ptr) != region_offset)
|
else if (LM_OFFSET (so_list_ptr) != region_offset)
|
{
|
{
|
char *region_name;
|
char *region_name;
|
target_read_string (region_info.regionname_addr, &buffer,
|
target_read_string (region_info.regionname_addr, &buffer,
|
MAX_PATH_SIZE - 1, &errcode);
|
MAX_PATH_SIZE - 1, &errcode);
|
if (errcode == 0)
|
if (errcode == 0)
|
region_name = buffer;
|
region_name = buffer;
|
else
|
else
|
region_name = "??";
|
region_name = "??";
|
warning ("cannot handle shared library relocation for %s (%s)",
|
warning ("cannot handle shared library relocation for %s (%s)",
|
so_list_ptr->so_name, region_name);
|
so_list_ptr->so_name, region_name);
|
free (buffer);
|
free (buffer);
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
|
|
catch_errors (solib_map_sections, (char *) so_list_ptr,
|
catch_errors (solib_map_sections, (char *) so_list_ptr,
|
"Error while mapping shared library sections:\n",
|
"Error while mapping shared library sections:\n",
|
RETURN_MASK_ALL);
|
RETURN_MASK_ALL);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
|
|
LOCAL FUNCTION
|
LOCAL FUNCTION
|
|
|
find_solib -- step through list of shared objects
|
find_solib -- step through list of shared objects
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
struct so_list *find_solib (struct so_list *so_list_ptr)
|
struct so_list *find_solib (struct so_list *so_list_ptr)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
This module contains the routine which finds the names of any
|
This module contains the routine which finds the names of any
|
loaded "images" in the current process. The argument in must be
|
loaded "images" in the current process. The argument in must be
|
NULL on the first call, and then the returned value must be passed
|
NULL on the first call, and then the returned value must be passed
|
in on subsequent calls. This provides the capability to "step" down
|
in on subsequent calls. This provides the capability to "step" down
|
the list of loaded objects. On the last object, a NULL value is
|
the list of loaded objects. On the last object, a NULL value is
|
returned.
|
returned.
|
|
|
The arg and return value are "struct link_map" pointers, as defined
|
The arg and return value are "struct link_map" pointers, as defined
|
in <link.h>.
|
in <link.h>.
|
*/
|
*/
|
|
|
static struct so_list *
|
static struct so_list *
|
find_solib (so_list_ptr)
|
find_solib (so_list_ptr)
|
struct so_list *so_list_ptr; /* Last lm or NULL for first one */
|
struct so_list *so_list_ptr; /* Last lm or NULL for first one */
|
{
|
{
|
struct so_list *so_list_next = NULL;
|
struct so_list *so_list_next = NULL;
|
struct link_map *lm = NULL;
|
struct link_map *lm = NULL;
|
struct so_list *new;
|
struct so_list *new;
|
|
|
if (so_list_ptr == NULL)
|
if (so_list_ptr == NULL)
|
{
|
{
|
/* We are setting up for a new scan through the loaded images. */
|
/* We are setting up for a new scan through the loaded images. */
|
if ((so_list_next = so_list_head) == NULL)
|
if ((so_list_next = so_list_head) == NULL)
|
{
|
{
|
/* Find the first link map list member. */
|
/* Find the first link map list member. */
|
lm = first_link_map_member ();
|
lm = first_link_map_member ();
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
/* We have been called before, and are in the process of walking
|
/* We have been called before, and are in the process of walking
|
the shared library list. Advance to the next shared object. */
|
the shared library list. Advance to the next shared object. */
|
lm = next_link_map_member (so_list_ptr);
|
lm = next_link_map_member (so_list_ptr);
|
so_list_next = so_list_ptr->next;
|
so_list_next = so_list_ptr->next;
|
}
|
}
|
if ((so_list_next == NULL) && (lm != NULL))
|
if ((so_list_next == NULL) && (lm != NULL))
|
{
|
{
|
/* Get next link map structure from inferior image and build a local
|
/* Get next link map structure from inferior image and build a local
|
abbreviated load_map structure */
|
abbreviated load_map structure */
|
new = (struct so_list *) xmalloc (sizeof (struct so_list));
|
new = (struct so_list *) xmalloc (sizeof (struct so_list));
|
memset ((char *) new, 0, sizeof (struct so_list));
|
memset ((char *) new, 0, sizeof (struct so_list));
|
new->lmaddr = lm;
|
new->lmaddr = lm;
|
/* Add the new node as the next node in the list, or as the root
|
/* Add the new node as the next node in the list, or as the root
|
node if this is the first one. */
|
node if this is the first one. */
|
if (so_list_ptr != NULL)
|
if (so_list_ptr != NULL)
|
{
|
{
|
so_list_ptr->next = new;
|
so_list_ptr->next = new;
|
}
|
}
|
else
|
else
|
{
|
{
|
so_list_head = new;
|
so_list_head = new;
|
}
|
}
|
so_list_next = new;
|
so_list_next = new;
|
xfer_link_map_member (new, lm);
|
xfer_link_map_member (new, lm);
|
}
|
}
|
return (so_list_next);
|
return (so_list_next);
|
}
|
}
|
|
|
/* A small stub to get us past the arg-passing pinhole of catch_errors. */
|
/* A small stub to get us past the arg-passing pinhole of catch_errors. */
|
|
|
static int
|
static int
|
symbol_add_stub (arg)
|
symbol_add_stub (arg)
|
char *arg;
|
char *arg;
|
{
|
{
|
register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
|
register struct so_list *so = (struct so_list *) arg; /* catch_errs bogon */
|
CORE_ADDR text_addr = 0;
|
CORE_ADDR text_addr = 0;
|
struct section_addr_info section_addrs;
|
struct section_addr_info section_addrs;
|
|
|
memset (§ion_addrs, 0, sizeof (section_addrs));
|
memset (§ion_addrs, 0, sizeof (section_addrs));
|
if (so->textsection)
|
if (so->textsection)
|
text_addr = so->textsection->addr;
|
text_addr = so->textsection->addr;
|
else if (so->abfd != NULL)
|
else if (so->abfd != NULL)
|
{
|
{
|
asection *lowest_sect;
|
asection *lowest_sect;
|
|
|
/* If we didn't find a mapped non zero sized .text section, set up
|
/* 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. */
|
text_addr so that the relocation in symbol_file_add does no harm. */
|
|
|
lowest_sect = bfd_get_section_by_name (so->abfd, ".text");
|
lowest_sect = bfd_get_section_by_name (so->abfd, ".text");
|
if (lowest_sect == NULL)
|
if (lowest_sect == NULL)
|
bfd_map_over_sections (so->abfd, find_lowest_section,
|
bfd_map_over_sections (so->abfd, find_lowest_section,
|
(PTR) &lowest_sect);
|
(PTR) &lowest_sect);
|
if (lowest_sect)
|
if (lowest_sect)
|
text_addr = bfd_section_vma (so->abfd, lowest_sect) + LM_OFFSET (so);
|
text_addr = bfd_section_vma (so->abfd, lowest_sect) + LM_OFFSET (so);
|
}
|
}
|
|
|
section_addrs.text_addr = text_addr;
|
section_addrs.text_addr = text_addr;
|
so->objfile = symbol_file_add (so->so_name, so->from_tty,
|
so->objfile = symbol_file_add (so->so_name, so->from_tty,
|
§ion_addrs, 0, OBJF_SHARED);
|
§ion_addrs, 0, OBJF_SHARED);
|
return (1);
|
return (1);
|
}
|
}
|
|
|
/*
|
/*
|
|
|
GLOBAL FUNCTION
|
GLOBAL FUNCTION
|
|
|
solib_add -- add a shared library file to the symtab and section list
|
solib_add -- add a shared library file to the symtab and section list
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void solib_add (char *arg_string, int from_tty,
|
void solib_add (char *arg_string, int from_tty,
|
struct target_ops *target)
|
struct target_ops *target)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
*/
|
*/
|
|
|
void
|
void
|
solib_add (arg_string, from_tty, target)
|
solib_add (arg_string, from_tty, target)
|
char *arg_string;
|
char *arg_string;
|
int from_tty;
|
int from_tty;
|
struct target_ops *target;
|
struct target_ops *target;
|
{
|
{
|
register struct so_list *so = NULL; /* link map state variable */
|
register struct so_list *so = NULL; /* link map state variable */
|
|
|
/* Last shared library that we read. */
|
/* Last shared library that we read. */
|
struct so_list *so_last = NULL;
|
struct so_list *so_last = NULL;
|
|
|
char *re_err;
|
char *re_err;
|
int count;
|
int count;
|
int old;
|
int old;
|
|
|
if ((re_err = re_comp (arg_string ? arg_string : ".")) != NULL)
|
if ((re_err = re_comp (arg_string ? arg_string : ".")) != NULL)
|
{
|
{
|
error ("Invalid regexp: %s", re_err);
|
error ("Invalid regexp: %s", re_err);
|
}
|
}
|
|
|
|
|
/* Add the shared library sections to the section table of the
|
/* Add the shared library sections to the section table of the
|
specified target, if any. */
|
specified target, if any. */
|
if (target)
|
if (target)
|
{
|
{
|
/* Count how many new section_table entries there are. */
|
/* Count how many new section_table entries there are. */
|
so = NULL;
|
so = NULL;
|
count = 0;
|
count = 0;
|
while ((so = find_solib (so)) != NULL)
|
while ((so = find_solib (so)) != NULL)
|
{
|
{
|
if (so->so_name[0])
|
if (so->so_name[0])
|
{
|
{
|
count += so->sections_end - so->sections;
|
count += so->sections_end - so->sections;
|
}
|
}
|
}
|
}
|
|
|
if (count)
|
if (count)
|
{
|
{
|
/* Add these section table entries to the target's table. */
|
/* Add these section table entries to the target's table. */
|
|
|
old = target_resize_to_sections (target, count);
|
old = target_resize_to_sections (target, count);
|
|
|
while ((so = find_solib (so)) != NULL)
|
while ((so = find_solib (so)) != NULL)
|
{
|
{
|
if (so->so_name[0])
|
if (so->so_name[0])
|
{
|
{
|
count = so->sections_end - so->sections;
|
count = so->sections_end - so->sections;
|
memcpy ((char *) (target->to_sections + old),
|
memcpy ((char *) (target->to_sections + old),
|
so->sections,
|
so->sections,
|
(sizeof (struct section_table)) * count);
|
(sizeof (struct section_table)) * count);
|
old += count;
|
old += count;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Now add the symbol files. */
|
/* Now add the symbol files. */
|
so = NULL;
|
so = NULL;
|
while ((so = find_solib (so)) != NULL)
|
while ((so = find_solib (so)) != NULL)
|
{
|
{
|
if (so->so_name[0] && re_exec (so->so_name))
|
if (so->so_name[0] && re_exec (so->so_name))
|
{
|
{
|
so->from_tty = from_tty;
|
so->from_tty = from_tty;
|
if (so->symbols_loaded)
|
if (so->symbols_loaded)
|
{
|
{
|
if (from_tty)
|
if (from_tty)
|
{
|
{
|
printf_unfiltered ("Symbols already loaded for %s\n", so->so_name);
|
printf_unfiltered ("Symbols already loaded for %s\n", so->so_name);
|
}
|
}
|
}
|
}
|
else if (catch_errors
|
else if (catch_errors
|
(symbol_add_stub, (char *) so,
|
(symbol_add_stub, (char *) so,
|
"Error while reading shared library symbols:\n",
|
"Error while reading shared library symbols:\n",
|
RETURN_MASK_ALL))
|
RETURN_MASK_ALL))
|
{
|
{
|
so_last = so;
|
so_last = so;
|
so->symbols_loaded = 1;
|
so->symbols_loaded = 1;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Getting new symbols may change our opinion about what is
|
/* Getting new symbols may change our opinion about what is
|
frameless. */
|
frameless. */
|
if (so_last)
|
if (so_last)
|
reinit_frame_cache ();
|
reinit_frame_cache ();
|
}
|
}
|
|
|
/*
|
/*
|
|
|
LOCAL FUNCTION
|
LOCAL FUNCTION
|
|
|
info_sharedlibrary_command -- code for "info sharedlibrary"
|
info_sharedlibrary_command -- code for "info sharedlibrary"
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
static void info_sharedlibrary_command ()
|
static void info_sharedlibrary_command ()
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Walk through the shared library list and print information
|
Walk through the shared library list and print information
|
about each attached library.
|
about each attached library.
|
*/
|
*/
|
|
|
static void
|
static void
|
info_sharedlibrary_command (ignore, from_tty)
|
info_sharedlibrary_command (ignore, from_tty)
|
char *ignore;
|
char *ignore;
|
int from_tty;
|
int from_tty;
|
{
|
{
|
register struct so_list *so = NULL; /* link map state variable */
|
register struct so_list *so = NULL; /* link map state variable */
|
int header_done = 0;
|
int header_done = 0;
|
|
|
if (exec_bfd == NULL)
|
if (exec_bfd == NULL)
|
{
|
{
|
printf_unfiltered ("No executable file.\n");
|
printf_unfiltered ("No executable file.\n");
|
return;
|
return;
|
}
|
}
|
while ((so = find_solib (so)) != NULL)
|
while ((so = find_solib (so)) != NULL)
|
{
|
{
|
if (so->so_name[0])
|
if (so->so_name[0])
|
{
|
{
|
unsigned long txt_start = 0;
|
unsigned long txt_start = 0;
|
unsigned long txt_end = 0;
|
unsigned long txt_end = 0;
|
|
|
if (!header_done)
|
if (!header_done)
|
{
|
{
|
printf_unfiltered ("%-20s%-20s%-12s%s\n", "From", "To", "Syms Read",
|
printf_unfiltered ("%-20s%-20s%-12s%s\n", "From", "To", "Syms Read",
|
"Shared Object Library");
|
"Shared Object Library");
|
header_done++;
|
header_done++;
|
}
|
}
|
if (so->textsection)
|
if (so->textsection)
|
{
|
{
|
txt_start = (unsigned long) so->textsection->addr;
|
txt_start = (unsigned long) so->textsection->addr;
|
txt_end = (unsigned long) so->textsection->endaddr;
|
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_start, "08l"));
|
printf_unfiltered ("%-20s", local_hex_string_custom (txt_end, "08l"));
|
printf_unfiltered ("%-20s", local_hex_string_custom (txt_end, "08l"));
|
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
printf_unfiltered ("%-12s", so->symbols_loaded ? "Yes" : "No");
|
printf_unfiltered ("%s\n", so->so_name);
|
printf_unfiltered ("%s\n", so->so_name);
|
}
|
}
|
}
|
}
|
if (so_list_head == NULL)
|
if (so_list_head == NULL)
|
{
|
{
|
printf_unfiltered ("No shared libraries loaded at this time.\n");
|
printf_unfiltered ("No shared libraries loaded at this time.\n");
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
|
|
GLOBAL FUNCTION
|
GLOBAL FUNCTION
|
|
|
solib_address -- check to see if an address is in a shared lib
|
solib_address -- check to see if an address is in a shared lib
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
char *solib_address (CORE_ADDR address)
|
char *solib_address (CORE_ADDR address)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
Provides a hook for other gdb routines to discover whether or
|
Provides a hook for other gdb routines to discover whether or
|
not a particular address is within the mapped address space of
|
not a particular address is within the mapped address space of
|
a shared library. Any address between the base mapping address
|
a shared library. Any address between the base mapping address
|
and the first address beyond the end of the last mapping, is
|
and the first address beyond the end of the last mapping, is
|
considered to be within the shared library address space, for
|
considered to be within the shared library address space, for
|
our purposes.
|
our purposes.
|
|
|
For example, this routine is called at one point to disable
|
For example, this routine is called at one point to disable
|
breakpoints which are in shared libraries that are not currently
|
breakpoints which are in shared libraries that are not currently
|
mapped in.
|
mapped in.
|
*/
|
*/
|
|
|
char *
|
char *
|
solib_address (address)
|
solib_address (address)
|
CORE_ADDR address;
|
CORE_ADDR address;
|
{
|
{
|
register struct so_list *so = 0; /* link map state variable */
|
register struct so_list *so = 0; /* link map state variable */
|
|
|
while ((so = find_solib (so)) != NULL)
|
while ((so = find_solib (so)) != NULL)
|
{
|
{
|
if (so->so_name[0] && so->textsection)
|
if (so->so_name[0] && so->textsection)
|
{
|
{
|
if ((address >= (CORE_ADDR) so->textsection->addr) &&
|
if ((address >= (CORE_ADDR) so->textsection->addr) &&
|
(address < (CORE_ADDR) so->textsection->endaddr))
|
(address < (CORE_ADDR) so->textsection->endaddr))
|
return (so->so_name);
|
return (so->so_name);
|
}
|
}
|
}
|
}
|
return (0);
|
return (0);
|
}
|
}
|
|
|
/* Called by free_all_symtabs */
|
/* Called by free_all_symtabs */
|
|
|
void
|
void
|
clear_solib ()
|
clear_solib ()
|
{
|
{
|
struct so_list *next;
|
struct so_list *next;
|
char *bfd_filename;
|
char *bfd_filename;
|
|
|
disable_breakpoints_in_shlibs (1);
|
disable_breakpoints_in_shlibs (1);
|
|
|
while (so_list_head)
|
while (so_list_head)
|
{
|
{
|
if (so_list_head->sections)
|
if (so_list_head->sections)
|
{
|
{
|
free ((PTR) so_list_head->sections);
|
free ((PTR) so_list_head->sections);
|
}
|
}
|
if (so_list_head->abfd)
|
if (so_list_head->abfd)
|
{
|
{
|
bfd_filename = bfd_get_filename (so_list_head->abfd);
|
bfd_filename = bfd_get_filename (so_list_head->abfd);
|
if (!bfd_close (so_list_head->abfd))
|
if (!bfd_close (so_list_head->abfd))
|
warning ("cannot close \"%s\": %s",
|
warning ("cannot close \"%s\": %s",
|
bfd_filename, bfd_errmsg (bfd_get_error ()));
|
bfd_filename, bfd_errmsg (bfd_get_error ()));
|
}
|
}
|
else
|
else
|
/* This happens for the executable on SVR4. */
|
/* This happens for the executable on SVR4. */
|
bfd_filename = NULL;
|
bfd_filename = NULL;
|
|
|
next = so_list_head->next;
|
next = so_list_head->next;
|
if (bfd_filename)
|
if (bfd_filename)
|
free ((PTR) bfd_filename);
|
free ((PTR) bfd_filename);
|
free ((PTR) so_list_head);
|
free ((PTR) so_list_head);
|
so_list_head = next;
|
so_list_head = next;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
|
|
GLOBAL FUNCTION
|
GLOBAL FUNCTION
|
|
|
solib_create_inferior_hook -- shared library startup support
|
solib_create_inferior_hook -- shared library startup support
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
void solib_create_inferior_hook()
|
void solib_create_inferior_hook()
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
When gdb starts up the inferior, it nurses it along (through the
|
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
|
shell) until it is ready to execute it's first instruction. At this
|
point, this function gets called via expansion of the macro
|
point, this function gets called via expansion of the macro
|
SOLIB_CREATE_INFERIOR_HOOK.
|
SOLIB_CREATE_INFERIOR_HOOK.
|
For a statically bound executable, this first instruction is the
|
For a statically bound executable, this first instruction is the
|
one at "_start", or a similar text label. No further processing is
|
one at "_start", or a similar text label. No further processing is
|
needed in that case.
|
needed in that case.
|
For a dynamically bound executable, this first instruction is somewhere
|
For a dynamically bound executable, this first instruction is somewhere
|
in the rld, and the actual user executable is not yet mapped in.
|
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
|
We continue the inferior again, rld then maps in the actual user
|
executable and any needed shared libraries and then sends
|
executable and any needed shared libraries and then sends
|
itself a SIGTRAP.
|
itself a SIGTRAP.
|
At that point we discover the names of all shared libraries and
|
At that point we discover the names of all shared libraries and
|
read their symbols in.
|
read their symbols in.
|
|
|
FIXME
|
FIXME
|
|
|
This code does not properly handle hitting breakpoints which the
|
This code does not properly handle hitting breakpoints which the
|
user might have set in the rld itself. Proper handling would have
|
user might have set in the rld itself. Proper handling would have
|
to check if the SIGTRAP happened due to a kill call.
|
to check if the SIGTRAP happened due to a kill call.
|
|
|
Also, what if child has exit()ed? Must exit loop somehow.
|
Also, what if child has exit()ed? Must exit loop somehow.
|
*/
|
*/
|
|
|
void
|
void
|
solib_create_inferior_hook ()
|
solib_create_inferior_hook ()
|
{
|
{
|
|
|
/* Nothing to do for statically bound executables. */
|
/* Nothing to do for statically bound executables. */
|
|
|
if (symfile_objfile == NULL
|
if (symfile_objfile == NULL
|
|| symfile_objfile->obfd == NULL
|
|| symfile_objfile->obfd == NULL
|
|| ((bfd_get_file_flags (symfile_objfile->obfd) & DYNAMIC) == 0))
|
|| ((bfd_get_file_flags (symfile_objfile->obfd) & DYNAMIC) == 0))
|
return;
|
return;
|
|
|
/* Now run the target. It will eventually get a SIGTRAP, at
|
/* Now run the target. It will eventually get a SIGTRAP, at
|
which point all of the libraries will have been mapped in and we
|
which point all of the libraries will have been mapped in and we
|
can go groveling around in the rld structures to find
|
can go groveling around in the rld structures to find
|
out what we need to know about them. */
|
out what we need to know about them. */
|
|
|
clear_proceed_status ();
|
clear_proceed_status ();
|
stop_soon_quietly = 1;
|
stop_soon_quietly = 1;
|
stop_signal = TARGET_SIGNAL_0;
|
stop_signal = TARGET_SIGNAL_0;
|
do
|
do
|
{
|
{
|
target_resume (-1, 0, stop_signal);
|
target_resume (-1, 0, stop_signal);
|
wait_for_inferior ();
|
wait_for_inferior ();
|
}
|
}
|
while (stop_signal != TARGET_SIGNAL_TRAP);
|
while (stop_signal != TARGET_SIGNAL_TRAP);
|
|
|
/* solib_add will call reinit_frame_cache.
|
/* solib_add will call reinit_frame_cache.
|
But we are stopped in the runtime loader and we do not have symbols
|
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
|
for the runtime loader. So heuristic_proc_start will be called
|
and will put out an annoying warning.
|
and will put out an annoying warning.
|
Delaying the resetting of stop_soon_quietly until after symbol loading
|
Delaying the resetting of stop_soon_quietly until after symbol loading
|
suppresses the warning. */
|
suppresses the warning. */
|
if (auto_solib_add)
|
if (auto_solib_add)
|
solib_add ((char *) 0, 0, (struct target_ops *) 0);
|
solib_add ((char *) 0, 0, (struct target_ops *) 0);
|
stop_soon_quietly = 0;
|
stop_soon_quietly = 0;
|
}
|
}
|
|
|
|
|
/*
|
/*
|
|
|
LOCAL FUNCTION
|
LOCAL FUNCTION
|
|
|
sharedlibrary_command -- handle command to explicitly add library
|
sharedlibrary_command -- handle command to explicitly add library
|
|
|
SYNOPSIS
|
SYNOPSIS
|
|
|
static void sharedlibrary_command (char *args, int from_tty)
|
static void sharedlibrary_command (char *args, int from_tty)
|
|
|
DESCRIPTION
|
DESCRIPTION
|
|
|
*/
|
*/
|
|
|
static void
|
static void
|
sharedlibrary_command (args, from_tty)
|
sharedlibrary_command (args, from_tty)
|
char *args;
|
char *args;
|
int from_tty;
|
int from_tty;
|
{
|
{
|
dont_repeat ();
|
dont_repeat ();
|
solib_add (args, from_tty, (struct target_ops *) 0);
|
solib_add (args, from_tty, (struct target_ops *) 0);
|
}
|
}
|
|
|
void
|
void
|
_initialize_solib ()
|
_initialize_solib ()
|
{
|
{
|
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
add_com ("sharedlibrary", class_files, sharedlibrary_command,
|
"Load shared object library symbols for files matching REGEXP.");
|
"Load shared object library symbols for files matching REGEXP.");
|
add_info ("sharedlibrary", info_sharedlibrary_command,
|
add_info ("sharedlibrary", info_sharedlibrary_command,
|
"Status of loaded shared object libraries.");
|
"Status of loaded shared object libraries.");
|
|
|
add_show_from_set
|
add_show_from_set
|
(add_set_cmd ("auto-solib-add", class_support, var_zinteger,
|
(add_set_cmd ("auto-solib-add", class_support, var_zinteger,
|
(char *) &auto_solib_add,
|
(char *) &auto_solib_add,
|
"Set autoloading of shared library symbols.\n\
|
"Set autoloading of shared library symbols.\n\
|
If nonzero, symbols from all shared object libraries will be loaded\n\
|
If nonzero, symbols from all shared object libraries will be loaded\n\
|
automatically when the inferior begins execution or when the dynamic linker\n\
|
automatically when the inferior begins execution or when the dynamic linker\n\
|
informs gdb that a new library has been loaded. Otherwise, symbols\n\
|
informs gdb that a new library has been loaded. Otherwise, symbols\n\
|
must be loaded manually, using `sharedlibrary'.",
|
must be loaded manually, using `sharedlibrary'.",
|
&setlist),
|
&setlist),
|
&showlist);
|
&showlist);
|
}
|
}
|
|
|
