gdb/config/mcore/tm-mcore.h

   1 /* Parameters for execution on a Motorola MCore.
   2
   3    Copyright 1995, 1999, 2000, 2002 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA. */
  21
  22 #include "regcache.h"
  23 #include "symtab.h"             /* For namespace_enum.  */
  24 #include "symfile.h"            /* For entry_point_address().  */
  25
  26 #define GDB_MULTI_ARCH 2
  27
  28 #if !GDB_MULTI_ARCH
  29 /* All registers are 32 bits */
  30 #define REGISTER_SIZE 4
  31 #define MAX_REGISTER_RAW_SIZE 4
  32
  33 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
  34
  35 #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
  36 #define REGISTER_VIRTUAL_SIZE(REG) 4
  37 #define REGISTER_RAW_SIZE(REG) 4
  38
  39 #define MAX_REGISTER_VIRTUAL_SIZE 4
  40
  41 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
  42 #endif
  43
  44 #if !GDB_MULTI_ARCH
  45 extern char *mcore_register_names[];
  46 #define REGISTER_NAME(I) mcore_register_names[I]
  47 #endif
  48
  49 /* Registers. The Motorola MCore contains:
  50
  51    16 32-bit general purpose registers (r0-r15)
  52    16 32-bit alternate file registers (ar0-ar15)
  53    32 32-bit control registers (cr0-cr31)
  54    + 1 pc
  55    ------
  56    65 registers */
  57 #if !GDB_MULTI_ARCH
  58 #define NUM_REGS 65
  59 #define PC_REGNUM 64
  60 #define SP_REGNUM 0
  61 #define FP_REGNUM (SP_REGNUM)
  62 #endif
  63
  64 /* Offset from address of function to start of its code.
  65    Zero on most machines.  */
  66 #if !GDB_MULTI_ARCH
  67 #define FUNCTION_START_OFFSET 0
  68
  69 #define DECR_PC_AFTER_BREAK 0
  70
  71 /* BREAKPOINT_FROM_PC uses the program counter value to determine
  72    the breakpoint that should be used. */
  73 extern const unsigned char *mcore_breakpoint_from_pc (CORE_ADDR *pcptr,
  74                                                       int *lenptr);
  75 #define BREAKPOINT_FROM_PC(PCPTR, LENPTR) mcore_breakpoint_from_pc (PCPTR, LENPTR)
  76
  77 #define INNER_THAN(LHS,RHS) ((LHS) < (RHS))
  78
  79 #define SAVED_PC_AFTER_CALL(FRAME)  read_register (PR_REGNUM)
  80
  81 struct frame_info;
  82 struct type;
  83 struct value;
  84 #endif
  85
  86 #if !GDB_MULTI_ARCH
  87 extern void mcore_init_extra_frame_info (struct frame_info *fi);
  88 #define INIT_EXTRA_FRAME_INFO(FROMLEAF, FI) mcore_init_extra_frame_info ((FI))
  89 #define INIT_FRAME_PC           /* Not necessary */
  90 #define FRAME_INIT_SAVED_REGS(FI)       /* handled by init_extra_frame_info */
  91
  92 extern CORE_ADDR mcore_frame_chain (struct frame_info *fi);
  93 #define FRAME_CHAIN(FI) mcore_frame_chain ((FI))
  94 #define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid ((FP), (FI))
  95
  96 extern CORE_ADDR mcore_frame_saved_pc (struct frame_info *);
  97 #define FRAME_SAVED_PC(FI) (mcore_frame_saved_pc ((FI)))
  98
  99 /* Extracting/storing return values. */
 100 extern void mcore_store_return_value (struct type *type, char *valbuf);
 101 #define STORE_RETURN_VALUE(TYPE, VALBUF) mcore_store_return_value ((TYPE), (VALBUF))
 102
 103 extern void mcore_extract_return_value (struct type *type, char *regbut, char *valbuf);
 104 #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 105     mcore_extract_return_value ((TYPE), (REGBUF), (VALBUF));
 106
 107 #define STORE_STRUCT_RETURN(ADDR, SP)   /* handled by mcore_push_arguments */
 108
 109 extern CORE_ADDR mcore_extract_struct_value_address (char *regbuf);
 110 #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 111     mcore_extract_struct_value_address (REGBUF)
 112
 113 extern CORE_ADDR mcore_skip_prologue (CORE_ADDR pc);
 114 #define SKIP_PROLOGUE(PC) mcore_skip_prologue (PC)
 115
 116 #define FRAME_ARGS_SKIP 0
 117 extern CORE_ADDR mcore_frame_args_address (struct frame_info *fi);
 118 #define FRAME_ARGS_ADDRESS(FI) mcore_frame_args_address ((FI))
 119 extern CORE_ADDR mcore_frame_locals_address (struct frame_info *fi);
 120 #define FRAME_LOCALS_ADDRESS(FI) mcore_frame_locals_address ((FI))
 121 #define FRAME_NUM_ARGS(FI) (-1)
 122
 123
 124 extern void mcore_pop_frame (struct frame_info *fi);
 125 #define POP_FRAME mcore_pop_frame (get_current_frame ())
 126 #endif
 127
 128 #if !GDB_MULTI_ARCH
 129 #define USE_GENERIC_DUMMY_FRAMES 1
 130 #define CALL_DUMMY                   {0}
 131 #define CALL_DUMMY_START_OFFSET      (0)
 132 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 133 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 134 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 135 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 136 #define SIZEOF_CALL_DUMMY_WORDS      0
 137 #define SAVE_DUMMY_FRAME_TOS(SP)     generic_save_dummy_frame_tos (SP)
 138
 139 extern CORE_ADDR mcore_push_return_address (CORE_ADDR, CORE_ADDR);
 140 #define PUSH_RETURN_ADDRESS(PC, SP)  mcore_push_return_address (PC, SP)
 141
 142 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 143
 144 extern CORE_ADDR mcore_push_arguments (int, struct value **, CORE_ADDR,
 145                                        unsigned char, CORE_ADDR);
 146 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
 147   (SP) = mcore_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
 148 #endif
 149
 150 #if !GDB_MULTI_ARCH
 151 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
 152
 153 /* MCore will never pass a sturcture by reference. It will always be split
 154    between registers and stack. */
 155 #define REG_STRUCT_HAS_ADDR(GCC_P, TYPE) 0
 156
 157 extern use_struct_convention_fn mcore_use_struct_convention;
 158 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mcore_use_struct_convention (GCC_P, TYPE)
 159
 160 /* override the default get_saved_register function with
 161    one that takes account of generic CALL_DUMMY frames */
 162 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
 163     generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
 164
 165 /* Cons up virtual frame pointer for trace */
 166 extern void mcore_virtual_frame_pointer (CORE_ADDR, int *, LONGEST *);
 167 #define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \
 168         mcore_virtual_frame_pointer ((PC), (REGP), (OFFP))
 169
 170 /* For PE, gcc will tell us what th real type of
 171    arguments are when it promotes arguments. */
 172 #define BELIEVE_PCC_PROMOTION 1
 173 #endif