/* Parameters for execution on a Motorola MCore. Copyright 1995, 1999, 2000, 2002 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 the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "regcache.h" /* All registers are 32 bits */ #define REGISTER_SIZE 4 #define MAX_REGISTER_RAW_SIZE 4 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE) #define REGISTER_VIRTUAL_SIZE(REG) 4 #define REGISTER_RAW_SIZE(REG) 4 #define MAX_REGISTER_VIRTUAL_SIZE 4 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE) extern char *mcore_register_names[]; #define REGISTER_NAME(I) mcore_register_names[I] /* Registers. The Motorola MCore contains: 16 32-bit general purpose registers (r0-r15) 16 32-bit alternate file registers (ar0-ar15) 32 32-bit control registers (cr0-cr31) + 1 pc ------ 65 registers */ #define NUM_REGS 65 #define PC_REGNUM 64 #define SP_REGNUM 0 #define FP_REGNUM (SP_REGNUM) #define PR_REGNUM 15 #define FIRST_ARGREG 2 #define LAST_ARGREG 7 #define RETVAL_REGNUM 2 /* Offset from address of function to start of its code. Zero on most machines. */ #define FUNCTION_START_OFFSET 0 #define DECR_PC_AFTER_BREAK 0 /* BREAKPOINT_FROM_PC uses the program counter value to determine the breakpoint that should be used. */ extern const unsigned char *mcore_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr); #define BREAKPOINT_FROM_PC(PCPTR, LENPTR) mcore_breakpoint_from_pc (PCPTR, LENPTR) #define INNER_THAN(LHS,RHS) ((LHS) < (RHS)) #define SAVED_PC_AFTER_CALL(FRAME) read_register (PR_REGNUM) struct frame_info; struct type; struct value; extern void mcore_init_extra_frame_info (struct frame_info *fi); #define INIT_EXTRA_FRAME_INFO(FROMLEAF, FI) mcore_init_extra_frame_info ((FI)) #define INIT_FRAME_PC /* Not necessary */ #define FRAME_INIT_SAVED_REGS(FI) /* handled by init_extra_frame_info */ extern CORE_ADDR mcore_frame_chain (struct frame_info *fi); #define FRAME_CHAIN(FI) mcore_frame_chain ((FI)) #define FRAME_CHAIN_VALID(FP, FI) generic_file_frame_chain_valid ((FP), (FI)) extern CORE_ADDR mcore_frame_saved_pc (struct frame_info *); #define FRAME_SAVED_PC(FI) (mcore_frame_saved_pc ((FI))) /* Extracting/storing return values. */ extern void mcore_store_return_value (struct type *type, char *valbuf); #define STORE_RETURN_VALUE(TYPE, VALBUF) mcore_store_return_value ((TYPE), (VALBUF)) extern void mcore_extract_return_value (struct type *type, char *regbut, char *valbuf); #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ mcore_extract_return_value ((TYPE), (REGBUF), (VALBUF)); #define STORE_STRUCT_RETURN(ADDR, SP) /* handled by mcore_push_arguments */ extern CORE_ADDR mcore_extract_struct_value_address (char *regbuf); #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ mcore_extract_struct_value_address (REGBUF) extern CORE_ADDR mcore_skip_prologue (CORE_ADDR pc); #define SKIP_PROLOGUE(PC) mcore_skip_prologue (PC) #define FRAME_ARGS_SKIP 0 extern CORE_ADDR mcore_frame_args_address (struct frame_info *fi); #define FRAME_ARGS_ADDRESS(FI) mcore_frame_args_address ((FI)) extern CORE_ADDR mcore_frame_locals_address (struct frame_info *fi); #define FRAME_LOCALS_ADDRESS(FI) mcore_frame_locals_address ((FI)) #define FRAME_NUM_ARGS(FI) (-1) extern void mcore_pop_frame (struct frame_info *fi); #define POP_FRAME mcore_pop_frame (get_current_frame ()) #define USE_GENERIC_DUMMY_FRAMES 1 #define CALL_DUMMY {0} #define CALL_DUMMY_START_OFFSET (0) #define CALL_DUMMY_BREAKPOINT_OFFSET (0) #define CALL_DUMMY_LOCATION AT_ENTRY_POINT #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP) #define CALL_DUMMY_ADDRESS() entry_point_address () #define SIZEOF_CALL_DUMMY_WORDS 0 #define SAVE_DUMMY_FRAME_TOS(SP) generic_save_dummy_frame_tos (SP) extern CORE_ADDR mcore_push_return_address (CORE_ADDR, CORE_ADDR); #define PUSH_RETURN_ADDRESS(PC, SP) mcore_push_return_address (PC, SP) #define PUSH_DUMMY_FRAME generic_push_dummy_frame () extern CORE_ADDR mcore_push_arguments (int, struct value **, CORE_ADDR, unsigned char, CORE_ADDR); #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ (SP) = mcore_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) /* MCore will never pass a sturcture by reference. It will always be split between registers and stack. */ #define REG_STRUCT_HAS_ADDR(GCC_P, TYPE) 0 extern use_struct_convention_fn mcore_use_struct_convention; #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mcore_use_struct_convention (GCC_P, TYPE) /* override the default get_saved_register function with one that takes account of generic CALL_DUMMY frames */ #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) /* Cons up virtual frame pointer for trace */ extern void mcore_virtual_frame_pointer (CORE_ADDR, int *, LONGEST *); #define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \ mcore_virtual_frame_pointer ((PC), (REGP), (OFFP)) /* For PE, gcc will tell us what th real type of arguments are when it promotes arguments. */ #define BELIEVE_PCC_PROMOTION 1