use bound_minsym as result for lookup_minimal_symbol et al

This patch changes a few minimal symbol lookup functions to return a
bound_minimal_symbol rather than a pointer to the minsym.  This change
helps prepare gdb for computing a minimal symbol's address at the
point of use.

Note that this changes even those functions that ostensibly search a
single objfile.  That was necessary because, in fact, those functions
can search an objfile and its separate debug objfiles; and it is
important for the caller to know in which objfile the minimal symbol
was actually found.

The bulk of this patch is mechanical.

2014-02-26  Tom Tromey  <tromey@redhat.com>

	* ada-lang.c (ada_update_initial_language): Update.
	(ada_main_name, ada_has_this_exception_support): Update.
	* ada-tasks.c (ada_tasks_inferior_data_sniffer): Update.
	* aix-thread.c (pdc_symbol_addrs, pd_enable): Update.
	* arm-tdep.c (arm_skip_stub): Update.
	* auxv.c (ld_so_xfer_auxv): Update.
	* avr-tdep.c (avr_scan_prologue): Update.
	* ax-gdb.c (gen_var_ref): Update.
	* breakpoint.c (struct breakpoint_objfile_data)
	<overlay_msym, longjmp_msym, terminate_msym, exception_msym>: Change
	type to bound_minimal_symbol.
	(create_overlay_event_breakpoint)
	(create_longjmp_master_breakpoint)
	(create_std_terminate_master_breakpoint)
	(create_exception_master_breakpoint): Update.
	* bsd-uthread.c (bsd_uthread_lookup_address): Update.
	* c-exp.y (classify_name): Update.
	* coffread.c (coff_symfile_read): Update.
	* common/agent.c (agent_look_up_symbols): Update.
	* d-lang.c (d_main_name): Update.
	* dbxread.c (find_stab_function_addr, end_psymtab): Update.
	* dec-thread.c (enable_dec_thread): Update.
	* dwarf2loc.c (call_site_to_target_addr): Update.
	* elfread.c (elf_gnu_ifunc_resolve_by_got): Update.
	* eval.c (evaluate_subexp_standard): Update.
	* findvar.c (struct minsym_lookup_data) <result>: Change type
	to bound_minimal_symbol.
	<objfile>: Remove.
	(minsym_lookup_iterator_cb, default_read_var_value): Update.
	* frame.c (inside_main_func): Update.
	* frv-tdep.c (frv_frame_this_id): Update.
	* gcore.c (call_target_sbrk): Update.
	* glibc-tdep.c (glibc_skip_solib_resolver): Update.
	* gnu-v3-abi.c (gnuv3_get_typeid, gnuv3_skip_trampoline):
	Update.
	* go-lang.c (go_main_name): Update.
	* hppa-hpux-tdep.c (hppa_hpux_skip_trampoline_code)
	(hppa_hpux_find_import_stub_for_addr): Update.
	* hppa-tdep.c (hppa_extract_17,	hppa_lookup_stub_minimal_symbol):
	Update.  Change return type.
	* hppa-tdep.h (hppa_lookup_stub_minimal_symbol): Change return
	type.
	* jit.c (jit_breakpoint_re_set_internal): Update.
	* linux-fork.c (inferior_call_waitpid, checkpoint_command):
	Update.
	* linux-nat.c (get_signo): Update.
	* linux-thread-db.c (inferior_has_bug): Update
	* m32c-tdep.c (m32c_return_value)
	(m32c_m16c_address_to_pointer): Update.
	* m32r-tdep.c (m32r_frame_this_id): Update.
	* m68hc11-tdep.c (m68hc11_get_register_info): Update.
	* machoread.c (macho_resolve_oso_sym_with_minsym): Update.
	* minsyms.c (lookup_minimal_symbol_internal): Rename to
	lookup_minimal_symbol.  Change return type.
	(lookup_minimal_symbol): Remove.
	(lookup_bound_minimal_symbol): Update.
	(lookup_minimal_symbol_text): Change return type.
	(lookup_minimal_symbol_solib_trampoline): Change return type.
	* minsyms.h (lookup_minimal_symbol, lookup_minimal_symbol_text)
	(lookup_minimal_symbol_solib_trampoline): Change return type.
	* mips-linux-tdep.c (mips_linux_skip_resolver): Update.
	* objc-lang.c (lookup_objc_class, lookup_child_selector)
	(value_nsstring, find_imps): Update.
	* obsd-tdep.c (obsd_skip_solib_resolver): Update.
	* p-lang.c (pascal_main_name): Update.
	* ppc-linux-tdep.c (ppc_linux_spe_context_lookup): Update.
	* ppc-sysv-tdep.c (convert_code_addr_to_desc_addr): Update.
	* proc-service.c (ps_pglobal_lookup): Update.
	* ravenscar-thread.c (get_running_thread_msymbol): Change
	return type.
	(has_ravenscar_runtime, get_running_thread_id): Update.
	* remote.c (remote_check_symbols): Update.
	* sol-thread.c (ps_pglobal_lookup): Update.
	* sol2-tdep.c (sol2_skip_solib_resolver): Update.
	* solib-dsbt.c (lm_base): Update.
	* solib-frv.c (lm_base, frv_relocate_section_addresses):
	Update.
	* solib-irix.c (locate_base): Update.
	* solib-som.c (som_solib_create_inferior_hook)
	(som_solib_desire_dynamic_linker_symbols, link_map_start):
	Update.
	* solib-spu.c (spu_enable_break): Update.
	* solib-svr4.c (elf_locate_base, enable_break): Update.
	* spu-tdep.c (spu_get_overlay_table, spu_catch_start)
	(flush_ea_cache): Update.
	* stabsread.c (define_symbol): Update.
	* symfile.c (simple_read_overlay_table): Update.
	* symtab.c (find_pc_sect_line): Update.
	* tracepoint.c (scope_info): Update.
	* tui-disasm.c (tui_get_begin_asm_address): Update.
	* value.c (value_static_field): Update.

1 files changed, 10 insertions, 8 deletions

diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
index 3434e80..4be0807 100644
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -787,7 +787,7 @@ scan_dyntag_auxv (int dyntag, CORE_ADDR *ptr)
 static CORE_ADDR
 elf_locate_base (void)
 {
-  struct minimal_symbol *msymbol;
+  struct bound_minimal_symbol msymbol;
   CORE_ADDR dyn_ptr;
 
   /* Look for DT_MIPS_RLD_MAP first.  MIPS executables use this
@@ -816,8 +816,8 @@ elf_locate_base (void)
   /* This may be a static executable.  Look for the symbol
      conventionally named _r_debug, as a last resort.  */
   msymbol = lookup_minimal_symbol ("_r_debug", NULL, symfile_objfile);
-  if (msymbol != NULL)
-    return MSYMBOL_VALUE_ADDRESS (msymbol);
+  if (msymbol.minsym != NULL)
+    return MSYMBOL_VALUE_ADDRESS (msymbol.minsym);
 
   /* DT_DEBUG entry not found.  */
   return 0;
@@ -2091,7 +2091,7 @@ cmp_name_and_sec_flags (asymbol *sym, void *data)
 static int
 enable_break (struct svr4_info *info, int from_tty)
 {
-  struct minimal_symbol *msymbol;
+  struct bound_minimal_symbol msymbol;
   const char * const *bkpt_namep;
   asection *interp_sect;
   char *interp_name;
@@ -2348,9 +2348,10 @@ enable_break (struct svr4_info *info, int from_tty)
   for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
     {
       msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
-      if ((msymbol != NULL) && (MSYMBOL_VALUE_ADDRESS (msymbol) != 0))
+      if ((msymbol.minsym != NULL)
+	  && (MSYMBOL_VALUE_ADDRESS (msymbol.minsym) != 0))
 	{
-	  sym_addr = MSYMBOL_VALUE_ADDRESS (msymbol);
+	  sym_addr = MSYMBOL_VALUE_ADDRESS (msymbol.minsym);
 	  sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
 							 sym_addr,
 							 &current_target);
@@ -2364,9 +2365,10 @@ enable_break (struct svr4_info *info, int from_tty)
       for (bkpt_namep = bkpt_names; *bkpt_namep != NULL; bkpt_namep++)
 	{
 	  msymbol = lookup_minimal_symbol (*bkpt_namep, NULL, symfile_objfile);
-	  if ((msymbol != NULL) && (MSYMBOL_VALUE_ADDRESS (msymbol) != 0))
+	  if ((msymbol.minsym != NULL)
+	      && (MSYMBOL_VALUE_ADDRESS (msymbol.minsym) != 0))
 	    {
-	      sym_addr = MSYMBOL_VALUE_ADDRESS (msymbol);
+	      sym_addr = MSYMBOL_VALUE_ADDRESS (msymbol.minsym);
 	      sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
 							     sym_addr,
 							     &current_target);