/* Parameters for execution on a Matsushita mn10200 processor. Copyright 1997 Free Software Foundation, Inc. Contributed by Geoffrey Noer <noer@cygnus.com> 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. */ /* The mn10200 is little endian. */ #define TARGET_BYTE_ORDER LITTLE_ENDIAN /* ints are only 16bits on the mn10200. */ #undef TARGET_INT_BIT #define TARGET_INT_BIT 16 /* The mn10200 doesn't support long long types. */ #undef TARGET_LONG_LONG_BIT #define TARGET_LONG_LONG_BIT 32 /* The mn10200 doesn't support double or long double either. */ #undef TARGET_DOUBLE_BIT #undef TARGET_LONG_DOUBLE_BIT #define TARGET_DOUBLE_BIT 32 #define TARGET_LONG_DOUBLE_BIT 32 /* Not strictly correct, but the machine independent code is not ready to handle any of the basic sizes not being a power of two. */ #undef TARGET_PTR_BIT #define TARGET_PTR_BIT 32 /* The mn10200 really has 24 bit registers but the simulator reads/writes them as 32bit values, so we claim they're 32bits each. This may have to be tweaked if the Matsushita emulator/board really deals with them as 24bits each. */ #define REGISTER_SIZE 4 #define MAX_REGISTER_RAW_SIZE REGISTER_SIZE #define NUM_REGS 11 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE) #define REGISTER_NAMES \ { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "sp", \ "pc", "mdr", "psw"} #define FP_REGNUM 6 #define SP_REGNUM 7 #define PC_REGNUM 8 #define MDR_REGNUM 9 #define PSW_REGNUM 10 /* Treat the registers as 32bit values. */ #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_long #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE) #define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE #define REGISTER_RAW_SIZE(REG) REGISTER_SIZE #define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE /* The breakpoint instruction must be the same size as te smallest instruction in the instruction set. The Matsushita mn10x00 processors have single byte instructions so we need a single byte breakpoint. Matsushita hasn't defined one, so we defined it ourselves. 0xff is the only available single byte insn left on the mn10200. */ #define BREAKPOINT {0xff} #define FUNCTION_START_OFFSET 0 #define DECR_PC_AFTER_BREAK 0 /* Stacks grow the normal way. */ #define INNER_THAN < #define SAVED_PC_AFTER_CALL(frame) \ (read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE) & 0xffff) #ifdef __STDC__ struct frame_info; struct frame_saved_regs; struct type; struct value; #endif #define EXTRA_FRAME_INFO struct frame_saved_regs fsr; int status; int stack_size; extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *)); #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi) #define INIT_FRAME_PC(x,y) extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *)); #define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *)); #define FRAME_CHAIN(fi) mn10200_frame_chain (fi) #define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI) extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *, int)); extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *)); #define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI)) /* Extract from an array REGBUF containing the (raw) register state a function return value of type TYPE, and copy that, in virtual format, into VALBUF. */ #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \ { \ if (TYPE_LENGTH (TYPE) > 8) \ abort (); \ else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \ { \ memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), 2); \ memcpy (VALBUF + 2, REGBUF + REGISTER_BYTE (1), 2); \ } \ else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\ { \ memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \ } \ else \ { \ memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)); \ } \ } #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ extract_address (REGBUF + REGISTER_BYTE (4), \ REGISTER_RAW_SIZE (4)) #define STORE_RETURN_VALUE(TYPE, VALBUF) \ { \ if (TYPE_LENGTH (TYPE) > 8) \ abort (); \ else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \ { \ write_register_bytes (REGISTER_BYTE (0), VALBUF, 2); \ write_register_bytes (REGISTER_BYTE (1), VALBUF + 2, 2); \ } \ else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\ { \ write_register_bytes (REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \ } \ else \ { \ write_register_bytes (REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); \ } \ } #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \ (SP) = mn10200_store_struct_return (STRUCT_ADDR, SP) extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR)); #define SKIP_PROLOGUE(pc) pc = mn10200_skip_prologue (pc) #define FRAME_ARGS_SKIP 0 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) #define FRAME_NUM_ARGS(val, fi) ((val) = -1) extern void mn10200_pop_frame PARAMS ((struct frame_info *)); #define POP_FRAME mn10200_pop_frame (get_current_frame ()) #define USE_GENERIC_DUMMY_FRAMES #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 () extern CORE_ADDR mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR)); #define PUSH_RETURN_ADDRESS(PC, SP) mn10200_push_return_address (PC, SP) #define PUSH_DUMMY_FRAME generic_push_dummy_frame () extern CORE_ADDR mn10200_push_arguments PARAMS ((int, struct value **, CORE_ADDR, unsigned char, CORE_ADDR)); #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ (SP) = mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP) #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \ (TYPE_LENGTH (TYPE) > 8) #define USE_STRUCT_CONVENTION(GCC_P, TYPE) \ (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 8) /* Override the default get_saved_register function with one that takes account of generic CALL_DUMMY frames. */ #define GET_SAVED_REGISTER /* Define this for Wingdb */ #define TARGET_MN10200