gdb/sparc-tdep.h

   1 /* Common target dependent code for GDB on SPARC systems.
   2    Copyright 2002 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 /*
  22  * Some local macros that have multi-arch and non-multi-arch versions:
  23  */
  24
  25 #if (GDB_MULTI_ARCH > 0)
  26
  27 /* Does the target have Floating Point registers?  */
  28 #define SPARC_HAS_FPU     (gdbarch_tdep (current_gdbarch)->has_fpu)
  29 /* Number of bytes devoted to Floating Point registers: */
  30 #define FP_REGISTER_BYTES (gdbarch_tdep (current_gdbarch)->fp_register_bytes)
  31 /* Highest numbered Floating Point register.  */
  32 #define FP_MAX_REGNUM     (gdbarch_tdep (current_gdbarch)->fp_max_regnum)
  33 /* Size of a general (integer) register: */
  34 #define SPARC_INTREG_SIZE (gdbarch_tdep (current_gdbarch)->intreg_size)
  35 /* Offset within the call dummy stack of the saved registers.  */
  36 #define DUMMY_REG_SAVE_OFFSET (gdbarch_tdep (current_gdbarch)->reg_save_offset)
  37
  38 #else /* non-multi-arch */
  39
  40 /* Does the target have Floating Point registers?  */
  41 #if defined(TARGET_SPARCLET) || defined(TARGET_SPARCLITE)
  42 #define SPARC_HAS_FPU 0
  43 #else
  44 #define SPARC_HAS_FPU 1
  45 #endif
  46
  47 /* Number of bytes devoted to Floating Point registers: */
  48 #if (GDB_TARGET_IS_SPARC64)
  49 #define FP_REGISTER_BYTES (64 * 4)
  50 #else
  51 #if (SPARC_HAS_FPU)
  52 #define FP_REGISTER_BYTES (32 * 4)
  53 #else
  54 #define FP_REGISTER_BYTES 0
  55 #endif
  56 #endif
  57
  58 /* Highest numbered Floating Point register.  */
  59 #if (GDB_TARGET_IS_SPARC64)
  60 #define FP_MAX_REGNUM (FP0_REGNUM + 48)
  61 #else
  62 #define FP_MAX_REGNUM (FP0_REGNUM + 32)
  63 #endif
  64
  65 /* Size of a general (integer) register: */
  66 #define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
  67
  68 /* Offset within the call dummy stack of the saved registers.  */
  69 #if (GDB_TARGET_IS_SPARC64)
  70 #define DUMMY_REG_SAVE_OFFSET (128 + 16)
  71 #else
  72 #define DUMMY_REG_SAVE_OFFSET 0x60
  73 #endif
  74
  75 #endif /* GDB_MULTI_ARCH */
  76
  77 #ifndef CALL_DUMMY_CALL_OFFSET
  78 #define CALL_DUMMY_CALL_OFFSET \
  79      (gdbarch_tdep (current_gdbarch)->call_dummy_call_offset)
  80 #endif /* CALL_DUMMY_CALL_OFFSET */
  81
  82 struct gdbarch_tdep
  83   {
  84     int os_ident;
  85     int has_fpu;
  86     int fp_register_bytes;
  87     int y_regnum;
  88     int fp_max_regnum;
  89     int intreg_size;
  90     int reg_save_offset;
  91     int call_dummy_call_offset;
  92     int print_insn_mach;
  93   };
  94
  95 /* How a OS variant tells the SPARC generic code that it can handle an ABI
  96    type.  */
  97 extern void sparc_gdbarch_register_os_abi (int os_ident,
  98                                            void (*init_abi)(struct gdbarch_info,
  99                                                             struct gdbarch *));