| /* Target-specific definition for a Hitachi Super-H. |
| Copyright (C) 1993 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. */ |
| |
| /* Contributed by Steve Chamberlain sac@cygnus.com */ |
| |
| struct frame_info; |
| struct frame_saved_regs; |
| struct value; |
| struct type; |
| |
| #define GDB_TARGET_IS_SH |
| |
| #define IEEE_FLOAT (1) |
| |
| /* Define the bit, byte, and word ordering of the machine. */ |
| |
| #define TARGET_BYTE_ORDER_SELECTABLE |
| |
| |
| /* Offset from address of function to start of its code. |
| Zero on most machines. */ |
| |
| #define FUNCTION_START_OFFSET 0 |
| |
| /* Advance PC across any function entry prologue instructions |
| to reach some "real" code. */ |
| |
| extern CORE_ADDR sh_skip_prologue PARAMS ((CORE_ADDR)); |
| #define SKIP_PROLOGUE(ip) (sh_skip_prologue (ip)) |
| |
| /* Immediately after a function call, return the saved pc. |
| Can't always go through the frames for this because on some machines |
| the new frame is not set up until the new function executes |
| some instructions. |
| |
| The return address is the value saved in the PR register + 4 */ |
| |
| #define SAVED_PC_AFTER_CALL(frame) (ADDR_BITS_REMOVE(read_register(PR_REGNUM))) |
| |
| /* Stack grows downward. */ |
| |
| #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) |
| |
| /* Illegal instruction - used by the simulator for breakpoint |
| detection */ |
| |
| #define BREAKPOINT {0xc3, 0xc3} /* 0xc3c3 is trapa #c3, and it works in big |
| and little endian modes */ |
| |
| #define BIG_REMOTE_BREAKPOINT { 0xc3, 0x20 } |
| #define LITTLE_REMOTE_BREAKPOINT { 0x20, 0xc3 } |
| |
| /* If your kernel resets the pc after the trap happens you may need to |
| define this before including this file. */ |
| #define DECR_PC_AFTER_BREAK 0 |
| |
| /* Say how long registers are. */ |
| #define REGISTER_TYPE long |
| |
| /* Say how much memory is needed to store a copy of the register set */ |
| #define REGISTER_BYTES (NUM_REGS*4) |
| |
| /* Index within `registers' of the first byte of the space for |
| register N. */ |
| |
| #define REGISTER_BYTE(N) ((N)*4) |
| |
| /* Number of bytes of storage in the actual machine representation |
| for register N. */ |
| |
| #define REGISTER_RAW_SIZE(N) 4 |
| |
| #define REGISTER_VIRTUAL_SIZE(N) 4 |
| |
| /* Largest value REGISTER_RAW_SIZE can have. */ |
| |
| #define MAX_REGISTER_RAW_SIZE 4 |
| |
| /* Largest value REGISTER_VIRTUAL_SIZE can have. */ |
| |
| #define MAX_REGISTER_VIRTUAL_SIZE 4 |
| |
| /* Return the GDB type object for the "standard" data type |
| of data in register N. */ |
| |
| #define REGISTER_VIRTUAL_TYPE(N) \ |
| (((((N) >= FP0_REGNUM && (N) <= FP15_REGNUM) \ |
| || (N) == FPUL_REGNUM) \ |
| && TARGET_ARCHITECTURE->mach != bfd_mach_sh_dsp \ |
| && TARGET_ARCHITECTURE->mach != bfd_mach_sh3_dsp) \ |
| ? builtin_type_float : builtin_type_int) |
| |
| /* Initializer for an array of names of registers. |
| Entries beyond the first NUM_REGS are ignored. */ |
| |
| extern char **sh_register_names; |
| #define REGISTER_NAME(i) sh_register_names[i] |
| |
| #define NUM_REGS 59 |
| |
| /* Register numbers of various important registers. Note that some of |
| these values are "real" register numbers, and correspond to the |
| general registers of the machine, and some are "phony" register |
| numbers which are too large to be actual register numbers as far as |
| the user is concerned but do serve to get the desired values when |
| passed to read_register. */ |
| |
| #define R0_REGNUM 0 |
| #define STRUCT_RETURN_REGNUM 2 |
| #define ARG0_REGNUM 4 |
| #define ARGLAST_REGNUM 7 |
| #define FP_REGNUM 14 |
| #define SP_REGNUM 15 |
| #define PC_REGNUM 16 |
| #define PR_REGNUM 17 |
| #define GBR_REGNUM 18 |
| #define VBR_REGNUM 19 |
| #define MACH_REGNUM 20 |
| #define MACL_REGNUM 21 |
| #define SR_REGNUM 22 |
| #define FPUL_REGNUM 23 |
| #define FPSCR_REGNUM 24 |
| #define DSR_REGNUM 24 |
| #define FP0_REGNUM 25 |
| #define FP15_REGNUM 40 |
| #define A0G_REGNUM 25 |
| #define A0_REGNUM 26 |
| #define A1G_REGNUM 27 |
| #define A1_REGNUM 28 |
| #define M0_REGNUM 29 |
| #define M1_REGNUM 30 |
| #define X0_REGNUM 31 |
| #define X1_REGNUM 32 |
| #define Y0_REGNUM 33 |
| #define Y1_REGNUM 34 |
| #define MOD_REGNUM 40 |
| #define SSR_REGNUM 41 |
| #define SPC_REGNUM 42 |
| #define R0B0_REGNUM 43 |
| #define R0B1_REGNUM 51 |
| #define RS_REGNUM 43 |
| #define RE_REGNUM 44 |
| #define R0B_REGNUM 51 |
| |
| #define NUM_REALREGS 59 |
| |
| /* Store the address of the place in which to copy the structure the |
| subroutine will return. This is called from call_function. |
| |
| We store structs through a pointer passed in R0 */ |
| |
| #define STORE_STRUCT_RETURN(ADDR, SP) \ |
| { write_register (STRUCT_RETURN_REGNUM, (ADDR)); } |
| |
| extern use_struct_convention_fn sh_use_struct_convention; |
| #define USE_STRUCT_CONVENTION(gcc_p, type) sh_use_struct_convention (gcc_p, type) |
| |
| /* 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. */ |
| |
| extern void sh_extract_return_value PARAMS ((struct type *, void *, void *)); |
| #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
| sh_extract_return_value (TYPE, REGBUF, VALBUF) |
| |
| /* Write into appropriate registers a function return value |
| of type TYPE, given in virtual format. |
| |
| Things always get returned in R0/R1 */ |
| |
| #define STORE_RETURN_VALUE(TYPE,VALBUF) \ |
| write_register_bytes (REGISTER_BYTE(0), VALBUF, TYPE_LENGTH (TYPE)) |
| |
| /* Extract from an array REGBUF containing the (raw) register state |
| the address in which a function should return its structure value, |
| as a CORE_ADDR (or an expression that can be used as one). */ |
| |
| #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ |
| extract_address (REGBUF, REGISTER_RAW_SIZE (0)) |
| |
| |
| /* Define other aspects of the stack frame. |
| we keep a copy of the worked out return pc lying around, since it |
| is a useful bit of info */ |
| |
| #define EXTRA_FRAME_INFO \ |
| CORE_ADDR return_pc; \ |
| int leaf_function; \ |
| int f_offset; |
| |
| #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ |
| sh_init_extra_frame_info(fromleaf, fi) |
| extern void sh_init_extra_frame_info PARAMS ((int, struct frame_info *)); |
| |
| /* A macro that tells us whether the function invocation represented |
| by FI does not have a frame on the stack associated with it. If it |
| does not, FRAMELESS is set to 1, else 0. */ |
| |
| #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
| (frameless_look_for_prologue(FI)) |
| |
| #define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc) |
| #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) |
| #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) |
| |
| /* Set VAL to the number of args passed to frame described by FI. |
| Can set VAL to -1, meaning no way to tell. */ |
| |
| /* We can't tell how many args there are */ |
| |
| #define FRAME_NUM_ARGS(fi) (-1) |
| |
| /* Return number of bytes at start of arglist that are not really args. */ |
| |
| #define FRAME_ARGS_SKIP 0 |
| |
| extern void sh_frame_find_saved_regs PARAMS ((struct frame_info * fi, |
| struct frame_saved_regs * fsr)); |
| |
| /* Put here the code to store, into a struct frame_saved_regs, |
| the addresses of the saved registers of frame described by FRAME_INFO. |
| This includes special registers such as pc and fp saved in special |
| ways in the stack frame. sp is even more special: |
| the address we return for it IS the sp for the next frame. */ |
| |
| #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ |
| sh_frame_find_saved_regs(frame_info, &(frame_saved_regs)) |
| |
| typedef unsigned short INSN_WORD; |
| |
| extern CORE_ADDR sh_push_arguments PARAMS ((int nargs, |
| struct value ** args, |
| CORE_ADDR sp, |
| unsigned char struct_return, |
| CORE_ADDR struct_addr)); |
| |
| #define USE_GENERIC_DUMMY_FRAMES 1 |
| #define CALL_DUMMY {0} |
| #define CALL_DUMMY_LENGTH (0) |
| #define CALL_DUMMY_START_OFFSET (0) |
| #define CALL_DUMMY_BREAKPOINT_OFFSET (0) |
| #define FIX_CALL_DUMMY(DUMMY, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP) |
| #define CALL_DUMMY_LOCATION AT_ENTRY_POINT |
| #define CALL_DUMMY_ADDRESS() entry_point_address () |
| extern CORE_ADDR sh_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR)); |
| #define PUSH_RETURN_ADDRESS(PC, SP) sh_push_return_address (PC, SP) |
| |
| |
| extern CORE_ADDR sh_frame_chain PARAMS ((struct frame_info *)); |
| #define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME) |
| #define PUSH_DUMMY_FRAME generic_push_dummy_frame () |
| #define FRAME_CHAIN_VALID(FP, FRAME) generic_file_frame_chain_valid (FP, FRAME) |
| #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) |
| #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ |
| (sh_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)) |
| |
| /* override the standard 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) |
| |
| /* Discard from the stack the innermost frame, restoring all saved |
| registers. */ |
| |
| extern void sh_pop_frame PARAMS ((void)); |
| #define POP_FRAME sh_pop_frame(); |
| |
| #define NOP {0x20, 0x0b} |
| |
| #define REGISTER_SIZE 4 |
| |
| #define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1) |
| |
| #define BELIEVE_PCC_PROMOTION 1 |
| |
| /* Need this for WinGDB. See gdb/mswin/{regdoc.h, gdbwin.c, gui.cpp}. */ |
| #define TARGET_SH |