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Diffstat (limited to 'gdb/xcoffsolib.c')
| -rw-r--r-- | gdb/xcoffsolib.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/gdb/xcoffsolib.c b/gdb/xcoffsolib.c new file mode 100644 index 0000000..13d8065 --- /dev/null +++ b/gdb/xcoffsolib.c @@ -0,0 +1,220 @@ +/* Shared library support for RS/6000 (xcoff) object files, for GDB. + Copyright 1991, 1992 Free Software Foundation. + Contributed by IBM Corporation. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#if 0 +#include <sys/types.h> +#include <sys/ldr.h> +#endif + +#include "defs.h" +#include "bfd.h" +#include "xcoffsolib.h" +#include "inferior.h" +#include "command.h" + +/* Hook to relocate symbols at runtime. If gdb is build natively, this + hook is initialized in by rs6000-nat.c. If not, it is currently left + NULL and never called. */ + +void (*xcoff_relocate_symtab_hook) PARAMS ((unsigned int)) = NULL; + +#ifdef SOLIB_SYMBOLS_MANUAL + +extern struct symtab *current_source_symtab; +extern int current_source_line; + +/* The real work of adding a shared library file to the symtab and + the section list. */ + +void +solib_add (arg_string, from_tty, target) + char *arg_string; + int from_tty; + struct target_ops *target; +{ + char *val; + struct vmap *vp = vmap; + struct objfile *obj; + struct symtab *saved_symtab; + int saved_line; + + int loaded = 0; /* true if any shared obj loaded */ + int matched = 0; /* true if any shared obj matched */ + + if (arg_string == 0) + re_comp ("."); + else if (val = (char *) re_comp (arg_string)) { + error ("Invalid regexp: %s", val); + } + if (!vp || !vp->nxt) + return; + + /* save current symbol table and line number, in case they get changed + in symbol loading process. */ + + saved_symtab = current_source_symtab; + saved_line = current_source_line; + + /* skip over the first vmap, it is the main program, always loaded. */ + vp = vp->nxt; + + for (; vp; vp = vp->nxt) { + + if (re_exec (vp->name) || (*vp->member && re_exec (vp->member))) { + + matched = 1; + + /* if already loaded, continue with the next one. */ + if (vp->loaded) { + + printf_unfiltered ("%s%s%s%s: already loaded.\n", + *vp->member ? "(" : "", + vp->member, + *vp->member ? ") " : "", + vp->name); + continue; + } + + printf_unfiltered ("Loading %s%s%s%s...", + *vp->member ? "(" : "", + vp->member, + *vp->member ? ") " : "", + vp->name); + gdb_flush (gdb_stdout); + + /* This is gross and doesn't work. If this code is re-enabled, + just stick a objfile member into the struct vmap; that's the + way solib.c (for SunOS/SVR4) does it. */ + obj = lookup_objfile_bfd (vp->bfd); + if (!obj) { + warning ("\nObj structure for the shared object not found. Loading failed."); + continue; + } + + syms_from_objfile (obj, 0, 0, 0); + new_symfile_objfile (obj, 0, 0); + vmap_symtab (vp, 0, 0); + printf_unfiltered ("Done.\n"); + loaded = vp->loaded = 1; + } + } + /* if any shared object is loaded, then misc_func_vector needs sorting. */ + if (loaded) { +#if 0 + sort_misc_function_vector (); +#endif + current_source_symtab = saved_symtab; + current_source_line = saved_line; + + /* Getting new symbols might change our opinion about what is frameless. + Is this correct?? FIXME. */ +/* reinit_frame_cache(); */ + } + else if (!matched) + printf_unfiltered ("No matching shared object found.\n"); +} +#endif /* SOLIB_SYMBOLS_MANUAL */ + +/* Return the module name of a given text address. Note that returned buffer + is not persistent. */ + +char * +pc_load_segment_name (addr) +CORE_ADDR addr; +{ + static char buffer [BUFSIZ]; + struct vmap *vp = vmap; + + buffer [0] = buffer [1] = '\0'; + for (; vp; vp = vp->nxt) + if (vp->tstart <= addr && addr < vp->tend) { + if (*vp->member) { + buffer [0] = '('; + strcat (&buffer[1], vp->member); + strcat (buffer, ")"); + } + strcat (buffer, vp->name); + return buffer; + } + return "(unknown load module)"; +} + +static void solib_info PARAMS ((char *, int)); + +static void +solib_info (args, from_tty) + char *args; + int from_tty; +{ + struct vmap *vp = vmap; + + /* Check for new shared libraries loaded with load (). */ + if (xcoff_relocate_symtab_hook != NULL) + (*xcoff_relocate_symtab_hook) (inferior_pid); + + if (vp == NULL || vp->nxt == NULL) + { + printf_unfiltered ("No shared libraries loaded at this time.\n"); + return; + } + + /* Skip over the first vmap, it is the main program, always loaded. */ + vp = vp->nxt; + + printf_unfiltered ("\ +Text Range Data Range Syms Shared Object Library\n"); + + for (; vp != NULL; vp = vp->nxt) + { + printf_unfiltered ("0x%08x-0x%08x 0x%08x-0x%08x %s %s%s%s%s\n", + vp->tstart, vp->tend, + vp->dstart, vp->dend, + vp->loaded ? "Yes" : "No ", + *vp->member ? "(" : "", + vp->member, + *vp->member ? ") " : "", + vp->name); + } +} + +void +sharedlibrary_command (args, from_tty) + char *args; + int from_tty; +{ + dont_repeat (); + + /* Check for new shared libraries loaded with load (). */ + if (xcoff_relocate_symtab_hook != NULL) + (*xcoff_relocate_symtab_hook) (inferior_pid); + +#ifdef SOLIB_SYMBOLS_MANUAL + solib_add (args, from_tty, (struct target_ops *)0); +#endif /* SOLIB_SYMBOLS_MANUAL */ +} + +void +_initialize_solib() +{ + add_com ("sharedlibrary", class_files, sharedlibrary_command, + "Load shared object library symbols for files matching REGEXP."); + add_info ("sharedlibrary", solib_info, + "Status of loaded shared object libraries"); +} |