Introduce gdbarch_num_cooked_regs

The expression

  gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch)

is used quite often to find the number of cooked registers (raw + pseudo
registers).  This patch introduces gdbarch_num_cooked_regs, which does
the equivalent.  It substantially reduces required wrapping in some
places, so should improve readability.

There is a for loop in m68hc11_frame_unwind_cache that had iterated
until (the equivalent of) gdbarch_num_cooked_regs (gdbarch) - 1.  During
review, we concluded that this is most likely an off-by-one mistake, so
I replaced it with gdbarch_num_cooked_regs (gdbarch).

gdb/ChangeLog:

	* gdbarch.sh (gdbarch_num_cooked_regs): New.
	* gdbarch.h: Re-generate.
	* ax-gdb.c (gen_expr): Use gdbarch_num_cooked_regs.
	* dwarf2-frame.c (dwarf2_frame_cache): Likewise.
	* eval.c (evaluate_subexp_standard): Likewise.
	* findvar.c (value_of_register): Likewise.
	(value_of_register_lazy): Likewise.
	(address_from_register): Likewise.
	* frame.c (get_frame_register_bytes): Likewise.
	* gdbarch-selftests.c (register_to_value_test): Likewise.
	* h8300-tdep.c (h8300_register_type): Likewise.
	* i386-tdep.c (i386_dbx_reg_to_regnum): Likewise.
	(i386_svr4_reg_to_regnum): Likewise.
	* infcmd.c (default_print_registers_info): Likewise.
	(registers_info): Likewise.
	(print_vector_info): Likewise.
	(default_print_float_info): Likewise.
	* m68hc11-tdep.c (m68hc11_frame_unwind_cache): Likewise.
	* mdebugread.c (mdebug_reg_to_regnum): Likewise.
	* mi/mi-main.c (mi_cmd_data_list_register_names): Likewise.
	(mi_cmd_data_list_changed_registers): Likewise.
	(mi_cmd_data_list_register_values): Likewise.
	(mi_cmd_data_write_register_values): Likewise.
	(mi_cmd_trace_frame_collected): Likewise.
	* mips-tdep.c (print_gp_register_row): Likewise.
	(mips_print_registers_info): Likewise.
	* nds32-tdep.c (nds32_gdbarch_init): Likewise.
	* regcache.c (init_regcache_descr): Likewise.
	(register_size): Likewise.
	(register_dump::dump): Likewise.
	(cooked_read_test): Likewise.
	(cooked_write_test): Likewise.
	* rs6000-tdep.c (rs6000_register_sim_regno): Likewise.
	(rs6000_gdbarch_init): Likewise.
	* stabsread.c (stab_reg_to_regnum): Likewise.
	* stack.c (info_frame_command): Likewise.
	* target-descriptions.c (tdesc_register_name): Likewise.
	* trad-frame.c (trad_frame_alloc_saved_regs): Likewise.
	* tui/tui-regs.c (tui_show_register_group): Likewise.
	* user-regs.c (user_reg_map_name_to_regnum): Likewise.
	(user_reg_map_regnum_to_name): Likewise.
	(value_of_user_reg): Likewise.
	(maintenance_print_user_registers): Likewise.
	* xtensa-tdep.c (xtensa_find_register_by_name): Likewise.
	(xtensa_register_name): Likewise.
	(xtensa_register_type): Likewise.
	(xtensa_reg_to_regnum): Likewise.
	(xtensa_pseudo_register_read): Likewise.
	(xtensa_pseudo_register_write): Likewise.

1 files changed, 3 insertions, 6 deletions

diff --git a/gdb/findvar.c b/gdb/findvar.c
index 41ffedd..3169348 100644
--- a/gdb/findvar.c
+++ b/gdb/findvar.c
@@ -267,8 +267,7 @@ value_of_register (int regnum, struct frame_info *frame)
 
   /* User registers lie completely outside of the range of normal
      registers.  Catch them early so that the target never sees them.  */
-  if (regnum >= gdbarch_num_regs (gdbarch)
-		+ gdbarch_num_pseudo_regs (gdbarch))
+  if (regnum >= gdbarch_num_cooked_regs (gdbarch))
     return value_of_user_reg (regnum, frame);
 
   reg_val = value_of_register_lazy (frame, regnum);
@@ -287,8 +286,7 @@ value_of_register_lazy (struct frame_info *frame, int regnum)
   struct value *reg_val;
   struct frame_info *next_frame;
 
-  gdb_assert (regnum < (gdbarch_num_regs (gdbarch)
-			+ gdbarch_num_pseudo_regs (gdbarch)));
+  gdb_assert (regnum < gdbarch_num_cooked_regs (gdbarch));
 
   gdb_assert (frame != NULL);
 
@@ -957,8 +955,7 @@ address_from_register (int regnum, struct frame_info *frame)
   struct type *type = builtin_type (gdbarch)->builtin_data_ptr;
   struct value *value;
   CORE_ADDR result;
-  int regnum_max_excl = (gdbarch_num_regs (gdbarch)
-			 + gdbarch_num_pseudo_regs (gdbarch));
+  int regnum_max_excl = gdbarch_num_cooked_regs (gdbarch);
 
   if (regnum < 0 || regnum >= regnum_max_excl)
     error (_("Invalid register #%d, expecting 0 <= # < %d"), regnum,