* breakpoint.h (breakpoint_restore_shadows): New

[deliverable/binutils-gdb.git] / gdb / arch-utils.c

diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c
index df3f9f67c1e727e9f7ac23fad07954e261798d68..2c8b34b4accdb1dfc505ec7144a6f7f23463f1db 100644 (file)
--- a/gdb/arch-utils.c
+++ b/gdb/arch-utils.c
@@ -1,13 +1,13 @@
 /* Dynamic architecture support for GDB, the GNU debugger.
 
 /* Dynamic architecture support for GDB, the GNU debugger.
 

-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+   2008 Free Software Foundation, Inc.

 
    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
 
    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
+   the Free Software Foundation; either version 3 of the License, or

    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -16,9 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include "defs.h"
 
 
 #include "defs.h"
 


@@ -38,65 +36,25 @@
 
 #include "floatformat.h"
 
 
 #include "floatformat.h"
 

-int
-always_use_struct_convention (int gcc_p, struct type *value_type)
-{
-  return 1;
-}
-
-enum return_value_convention
-legacy_return_value (struct gdbarch *gdbarch, struct type *valtype,
-                    struct regcache *regcache, gdb_byte *readbuf,
-                    const gdb_byte *writebuf)
-{
-  /* NOTE: cagney/2004-06-13: The gcc_p parameter to
-     USE_STRUCT_CONVENTION isn't used.  */
-  int struct_return = ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT
-                       || TYPE_CODE (valtype) == TYPE_CODE_UNION
-                       || TYPE_CODE (valtype) == TYPE_CODE_ARRAY)
-                      && DEPRECATED_USE_STRUCT_CONVENTION (0, valtype));
-
-  if (writebuf != NULL)
-    {
-      gdb_assert (!struct_return);
-      /* NOTE: cagney/2004-06-13: See stack.c:return_command.  Old
-        architectures don't expect STORE_RETURN_VALUE to handle small
-        structures.  Should not be called with such types.  */
-      gdb_assert (TYPE_CODE (valtype) != TYPE_CODE_STRUCT
-                 && TYPE_CODE (valtype) != TYPE_CODE_UNION);
-      STORE_RETURN_VALUE (valtype, regcache, writebuf);
-    }
-
-  if (readbuf != NULL)
-    {
-      gdb_assert (!struct_return);
-      EXTRACT_RETURN_VALUE (valtype, regcache, readbuf);
-    }
-
-  if (struct_return)
-    return RETURN_VALUE_STRUCT_CONVENTION;
-  else
-    return RETURN_VALUE_REGISTER_CONVENTION;
-}

 
 int
 
 int

-legacy_register_sim_regno (int regnum)
+legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum)

 {
   /* Only makes sense to supply raw registers.  */
 {
   /* Only makes sense to supply raw registers.  */

-  gdb_assert (regnum >= 0 && regnum < NUM_REGS);
+  gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch));

   /* NOTE: cagney/2002-05-13: The old code did it this way and it is
      suspected that some GDB/SIM combinations may rely on this
      behavour.  The default should be one2one_register_sim_regno
      (below).  */
   /* NOTE: cagney/2002-05-13: The old code did it this way and it is
      suspected that some GDB/SIM combinations may rely on this
      behavour.  The default should be one2one_register_sim_regno
      (below).  */

-  if (REGISTER_NAME (regnum) != NULL
-      && REGISTER_NAME (regnum)[0] != '\0')
+  if (gdbarch_register_name (gdbarch, regnum) != NULL
+      && gdbarch_register_name (gdbarch, regnum)[0] != '\0')

     return regnum;
   else
     return LEGACY_SIM_REGNO_IGNORE;
 }
 
 CORE_ADDR
     return regnum;
   else
     return LEGACY_SIM_REGNO_IGNORE;
 }
 
 CORE_ADDR

-generic_skip_trampoline_code (CORE_ADDR pc)
+generic_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)

 {
   return 0;
 }
 {
   return 0;
 }


@@ -119,17 +77,7 @@ generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
   return 0;
 }
 
   return 0;
 }
 

-void
-generic_remote_translate_xfer_address (struct gdbarch *gdbarch,
-                                      struct regcache *regcache,
-                                      CORE_ADDR gdb_addr, int gdb_len,
-                                      CORE_ADDR * rem_addr, int *rem_len)
-{
-  *rem_addr = gdb_addr;
-  *rem_len = gdb_len;
-}
-
-/* Helper functions for INNER_THAN */
+/* Helper functions for gdbarch_inner_than */

 
 int
 core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
 
 int
 core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)


@@ -143,42 +91,6 @@ core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
   return (lhs > rhs);
 }
 
   return (lhs > rhs);
 }
 

-
-/* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */
-
-const struct floatformat *
-default_float_format (struct gdbarch *gdbarch)
-{
-  int byte_order = gdbarch_byte_order (gdbarch);
-  switch (byte_order)
-    {
-    case BFD_ENDIAN_BIG:
-      return &floatformat_ieee_single_big;
-    case BFD_ENDIAN_LITTLE:
-      return &floatformat_ieee_single_little;
-    default:
-      internal_error (__FILE__, __LINE__,
-                     _("default_float_format: bad byte order"));
-    }
-}
-
-
-const struct floatformat *
-default_double_format (struct gdbarch *gdbarch)
-{
-  int byte_order = gdbarch_byte_order (gdbarch);
-  switch (byte_order)
-    {
-    case BFD_ENDIAN_BIG:
-      return &floatformat_ieee_double_big;
-    case BFD_ENDIAN_LITTLE:
-      return &floatformat_ieee_double_little;
-    default:
-      internal_error (__FILE__, __LINE__,
-                     _("default_double_format: bad byte order"));
-    }
-}
-

 /* Misc helper functions for targets. */
 
 CORE_ADDR
 /* Misc helper functions for targets. */
 
 CORE_ADDR


@@ -195,7 +107,7 @@ convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr,
 }
 
 int
 }
 
 int

-no_op_reg_to_regnum (int reg)
+no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg)

 {
   return reg;
 }
 {
   return reg;
 }


@@ -213,17 +125,18 @@ default_coff_make_msymbol_special (int val, struct minimal_symbol *msym)
 }
 
 int
 }
 
 int

-cannot_register_not (int regnum)
+cannot_register_not (struct gdbarch *gdbarch, int regnum)

 {
   return 0;
 }
 
 /* Legacy version of target_virtual_frame_pointer().  Assumes that
 {
   return 0;
 }
 
 /* Legacy version of target_virtual_frame_pointer().  Assumes that

-   there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
+   there is an gdbarch_deprecated_fp_regnum and that it is the same, cooked or

    raw.  */
 
 void
    raw.  */
 
 void

-legacy_virtual_frame_pointer (CORE_ADDR pc,
+legacy_virtual_frame_pointer (struct gdbarch *gdbarch, 
+                             CORE_ADDR pc,

                              int *frame_regnum,
                              LONGEST *frame_offset)
 {
                              int *frame_regnum,
                              LONGEST *frame_offset)
 {


@@ -232,10 +145,14 @@ legacy_virtual_frame_pointer (CORE_ADDR pc,
      register and an offset can determine this.  I think it should
      instead generate a byte code expression as that would work better
      with things like Dwarf2's CFI.  */
      register and an offset can determine this.  I think it should
      instead generate a byte code expression as that would work better
      with things like Dwarf2's CFI.  */

-  if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS)
-    *frame_regnum = DEPRECATED_FP_REGNUM;
-  else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS)
-    *frame_regnum = SP_REGNUM;
+  if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0
+      && gdbarch_deprecated_fp_regnum (gdbarch)
+          < gdbarch_num_regs (gdbarch))
+    *frame_regnum = gdbarch_deprecated_fp_regnum (gdbarch);
+  else if (gdbarch_sp_regnum (gdbarch) >= 0
+          && gdbarch_sp_regnum (gdbarch)
+               < gdbarch_num_regs (gdbarch))
+    *frame_regnum = gdbarch_sp_regnum (gdbarch);

   else
     /* Should this be an internal error?  I guess so, it is reflecting
        an architectural limitation in the current design.  */
   else
     /* Should this be an internal error?  I guess so, it is reflecting
        an architectural limitation in the current design.  */


@@ -243,45 +160,10 @@ legacy_virtual_frame_pointer (CORE_ADDR pc,
   *frame_offset = 0;
 }
 
   *frame_offset = 0;
 }
 

-/* Assume the world is sane, every register's virtual and real size
-   is identical.  */
-
-int
-generic_register_size (int regnum)
-{
-  gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
-  return TYPE_LENGTH (register_type (current_gdbarch, regnum));
-}
-
-/* Assume all registers are adjacent.  */
-
-int
-generic_register_byte (int regnum)
-{
-  int byte;
-  int i;
-  gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
-  byte = 0;
-  for (i = 0; i < regnum; i++)
-    {
-      byte += generic_register_size (i);
-    }
-  return byte;
-}
-

 \f
 int
 \f
 int

-legacy_pc_in_sigtramp (CORE_ADDR pc, char *name)
-{
-#if defined (DEPRECATED_IN_SIGTRAMP)
-  return DEPRECATED_IN_SIGTRAMP (pc, name);
-#else
-  return name && strcmp ("_sigtramp", name) == 0;
-#endif
-}
-
-int
-generic_convert_register_p (int regnum, struct type *type)
+generic_convert_register_p (struct gdbarch *gdbarch, int regnum,
+                           struct type *type)

 {
   return 0;
 }
 {
   return 0;
 }


@@ -299,6 +181,13 @@ generic_instruction_nullified (struct gdbarch *gdbarch,
   return 0;
 }
 
   return 0;
 }
 

+int
+default_remote_register_number (struct gdbarch *gdbarch,
+                               int regno)
+{
+  return regno;
+}
+

 \f
 /* Functions to manipulate the endianness of the target.  */
 
 \f
 /* Functions to manipulate the endianness of the target.  */
 


@@ -316,6 +205,15 @@ static const char *endian_enum[] =
 };
 static const char *set_endian_string;
 
 };
 static const char *set_endian_string;
 

+enum bfd_endian
+selected_byte_order (void)
+{
+  if (target_byte_order_user != BFD_ENDIAN_UNKNOWN)
+    return gdbarch_byte_order (current_gdbarch);
+  else
+    return BFD_ENDIAN_UNKNOWN;
+}
+

 /* Called by ``show endian''.  */
 
 static void
 /* Called by ``show endian''.  */
 
 static void


@@ -323,14 +221,14 @@ show_endian (struct ui_file *file, int from_tty, struct cmd_list_element *c,
             const char *value)
 {
   if (target_byte_order_user == BFD_ENDIAN_UNKNOWN)
             const char *value)
 {
   if (target_byte_order_user == BFD_ENDIAN_UNKNOWN)

-    if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+    if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)

       fprintf_unfiltered (file, _("The target endianness is set automatically "
                                  "(currently big endian)\n"));
     else
       fprintf_unfiltered (file, _("The target endianness is set automatically "
                           "(currently little endian)\n"));
   else
       fprintf_unfiltered (file, _("The target endianness is set automatically "
                                  "(currently big endian)\n"));
     else
       fprintf_unfiltered (file, _("The target endianness is set automatically "
                           "(currently little endian)\n"));
   else

-    if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+    if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)

       fprintf_unfiltered (file,
                          _("The target is assumed to be big endian\n"));
     else
       fprintf_unfiltered (file,
                          _("The target is assumed to be big endian\n"));
     else


@@ -469,7 +367,7 @@ show_architecture (struct ui_file *file, int from_tty,
                   struct cmd_list_element *c, const char *value)
 {
   const char *arch;
                   struct cmd_list_element *c, const char *value)
 {
   const char *arch;

-  arch = TARGET_ARCHITECTURE->printable_name;
+  arch = gdbarch_bfd_arch_info (current_gdbarch)->printable_name;

   if (target_architecture_user == NULL)
     fprintf_filtered (file, _("\
 The target architecture is set automatically (currently %s)\n"), arch);
   if (target_architecture_user == NULL)
     fprintf_filtered (file, _("\
 The target architecture is set automatically (currently %s)\n"), arch);


@@ -556,8 +454,6 @@ gdbarch_update_p (struct gdbarch_info info)
 struct gdbarch *
 gdbarch_from_bfd (bfd *abfd)
 {
 struct gdbarch *
 gdbarch_from_bfd (bfd *abfd)
 {

-  struct gdbarch *old_gdbarch = current_gdbarch;
-  struct gdbarch *new_gdbarch;

   struct gdbarch_info info;
 
   /* If we call gdbarch_find_by_info without filling in info.abfd,
   struct gdbarch_info info;
 
   /* If we call gdbarch_find_by_info without filling in info.abfd,


@@ -723,6 +619,8 @@ gdbarch_info_fill (struct gdbarch_info *info)
   /* Check for the current file.  */
   if (info->abfd == NULL)
     info->abfd = exec_bfd;
   /* Check for the current file.  */
   if (info->abfd == NULL)
     info->abfd = exec_bfd;

+  if (info->abfd == NULL)
+    info->abfd = core_bfd;

 
   /* Check for the current target description.  */
   if (info->target_desc == NULL)
 
   /* Check for the current target description.  */
   if (info->target_desc == NULL)