1 /* Parameters for execution on a Motorola MCore.
3 Copyright 1995, 1999, 2000, 2002 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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. */
23 #include "symtab.h" /* For namespace_enum. */
24 #include "symfile.h" /* For entry_point_address(). */
26 /* All registers are 32 bits */
27 #define REGISTER_SIZE 4
28 #define MAX_REGISTER_RAW_SIZE 4
30 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
32 #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
33 #define REGISTER_VIRTUAL_SIZE(REG) 4
34 #define REGISTER_RAW_SIZE(REG) 4
36 #define MAX_REGISTER_VIRTUAL_SIZE 4
38 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
40 extern char *mcore_register_names[];
41 #define REGISTER_NAME(I) mcore_register_names[I]
43 /* Registers. The Motorola MCore contains:
45 16 32-bit general purpose registers (r0-r15)
46 16 32-bit alternate file registers (ar0-ar15)
47 32 32-bit control registers (cr0-cr31)
54 #define FP_REGNUM (SP_REGNUM)
56 #define FIRST_ARGREG 2
58 #define RETVAL_REGNUM 2
60 /* Offset from address of function to start of its code.
61 Zero on most machines. */
62 #define FUNCTION_START_OFFSET 0
64 #define DECR_PC_AFTER_BREAK 0
66 /* BREAKPOINT_FROM_PC uses the program counter value to determine
67 the breakpoint that should be used. */
68 extern const unsigned char *mcore_breakpoint_from_pc (CORE_ADDR *pcptr,
70 #define BREAKPOINT_FROM_PC(PCPTR, LENPTR) mcore_breakpoint_from_pc (PCPTR, LENPTR)
72 #define INNER_THAN(LHS,RHS) ((LHS) < (RHS))
74 #define SAVED_PC_AFTER_CALL(FRAME) read_register (PR_REGNUM)
80 extern void mcore_init_extra_frame_info (struct frame_info *fi);
81 #define INIT_EXTRA_FRAME_INFO(FROMLEAF, FI) mcore_init_extra_frame_info ((FI))
82 #define INIT_FRAME_PC /* Not necessary */
83 #define FRAME_INIT_SAVED_REGS(FI) /* handled by init_extra_frame_info */
85 extern CORE_ADDR mcore_frame_chain (struct frame_info *fi);
86 #define FRAME_CHAIN(FI) mcore_frame_chain ((FI))
87 #define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid ((FP), (FI))
89 extern CORE_ADDR mcore_frame_saved_pc (struct frame_info *);
90 #define FRAME_SAVED_PC(FI) (mcore_frame_saved_pc ((FI)))
92 /* Extracting/storing return values. */
93 extern void mcore_store_return_value (struct type *type, char *valbuf);
94 #define STORE_RETURN_VALUE(TYPE, VALBUF) mcore_store_return_value ((TYPE), (VALBUF))
96 extern void mcore_extract_return_value (struct type *type, char *regbut, char *valbuf);
97 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
98 mcore_extract_return_value ((TYPE), (REGBUF), (VALBUF));
100 #define STORE_STRUCT_RETURN(ADDR, SP) /* handled by mcore_push_arguments */
102 extern CORE_ADDR mcore_extract_struct_value_address (char *regbuf);
103 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
104 mcore_extract_struct_value_address (REGBUF)
106 extern CORE_ADDR mcore_skip_prologue (CORE_ADDR pc);
107 #define SKIP_PROLOGUE(PC) mcore_skip_prologue (PC)
109 #define FRAME_ARGS_SKIP 0
110 extern CORE_ADDR mcore_frame_args_address (struct frame_info *fi);
111 #define FRAME_ARGS_ADDRESS(FI) mcore_frame_args_address ((FI))
112 extern CORE_ADDR mcore_frame_locals_address (struct frame_info *fi);
113 #define FRAME_LOCALS_ADDRESS(FI) mcore_frame_locals_address ((FI))
114 #define FRAME_NUM_ARGS(FI) (-1)
117 extern void mcore_pop_frame (struct frame_info *fi);
118 #define POP_FRAME mcore_pop_frame (get_current_frame ())
120 #define USE_GENERIC_DUMMY_FRAMES 1
121 #define CALL_DUMMY {0}
122 #define CALL_DUMMY_START_OFFSET (0)
123 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
124 #define CALL_DUMMY_LOCATION AT_ENTRY_POINT
125 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
126 #define CALL_DUMMY_ADDRESS() entry_point_address ()
127 #define SIZEOF_CALL_DUMMY_WORDS 0
128 #define SAVE_DUMMY_FRAME_TOS(SP) generic_save_dummy_frame_tos (SP)
130 extern CORE_ADDR mcore_push_return_address (CORE_ADDR, CORE_ADDR);
131 #define PUSH_RETURN_ADDRESS(PC, SP) mcore_push_return_address (PC, SP)
133 #define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
135 extern CORE_ADDR mcore_push_arguments (int, struct value **, CORE_ADDR,
136 unsigned char, CORE_ADDR);
137 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
138 (SP) = mcore_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
140 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
142 /* MCore will never pass a sturcture by reference. It will always be split
143 between registers and stack. */
144 #define REG_STRUCT_HAS_ADDR(GCC_P, TYPE) 0
146 extern use_struct_convention_fn mcore_use_struct_convention;
147 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mcore_use_struct_convention (GCC_P, TYPE)
149 /* override the default get_saved_register function with
150 one that takes account of generic CALL_DUMMY frames */
151 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
152 generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
154 /* Cons up virtual frame pointer for trace */
155 extern void mcore_virtual_frame_pointer (CORE_ADDR, int *, LONGEST *);
156 #define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \
157 mcore_virtual_frame_pointer ((PC), (REGP), (OFFP))
159 /* For PE, gcc will tell us what th real type of
160 arguments are when it promotes arguments. */
161 #define BELIEVE_PCC_PROMOTION 1