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* solib-svr4.c (svr4_solib_create_inferior_hook): Disable
breakpoints at startup.
(elf_locate_base): Find out where the entry point for the program
is, using the auxv vector, if possible. Compute the address of
.dynamic using it.
(svr4_current_sos): Don't ignore the first entry if we have PIE,
it's our main program. Delete code that was skipping over the
solib entry for main executable.
* solist.h (struct so_list): Add fields main and main_relocated.
(add_to_target_sections): Export.
* solib.c (symbol_add_stub): Handle main executable in shared
library list. Ignore it if it has been relocated already. Add it
as the main symbol file, otherwise.
* infrun.c (handle_inferior_event): Re-enable startup breakpoints.
* solib-svr4.c (elf_locate_base, first_link_map_member)
svr4_current_sos, enable_break): Add debugging output.
* solist.h (debug_solib): Export.
* solib.c (debug_solib): New variable to enable debugging output.
(symbol_add_stub, update_solib_list, update_solib_list)
(add_to_target_sections): Add debugging output.
(_initialize_solib): Add new comand to enable printing of
debugging output.
(add_to_target_sections): New function. Factored out from
update_solib_list.
(update_solib_list): Call add_to_target_sections.
* varobj.h (varobj_refresh): New prototype.
* varobj.c (varobj_refresh): New function.
* symfile.c (reread_symbols): Make sure that we recompute the
entry point for the program.
(symbol_file_clear): Clear the solibs as well, if we change symbol
files.
(clear_symtab_users): Refresh the varobjs that depend on the symtabs
we are clearing.
* objfiles.c (entry_point_address): Rewrite, to fetch entry point
from auxv vector, if possible.
Add include of elf/common.h.
* breakpoint.h (enum bptype): Add bp type bp_startup_disabled.
(re_enable_breakpoints_at_startup)
(disable_breakpoints_at_startup): Add prototypes
* breakpoint.c (re_enable_breakpoints_at_startup)
(disable_breakpoints_at_startup): New functions.
(describe_other_breakpoints, delete_breakpoint)
(breakpoint_re_set_one): Handle new bp type.
* auxv.h (target_auxv_parse, target_auxv_search): Update.
* auxv.c (target_auxv_parse, target_auxv_search)
(fprint_target_auxv): Use ULONGEST instead of CORE_ADDR for
variable. Change variable name to at_type.
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