diff options
| -rw-r--r-- | gdb/h8300-tdep.c | 32 | ||||
| -rwxr-xr-x | gdb/hds-tdep.c | 2 | ||||
| -rw-r--r-- | gdb/tm-h8300.h | 264 |
3 files changed, 298 insertions, 0 deletions
diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c new file mode 100644 index 0000000..21dde42 --- /dev/null +++ b/gdb/h8300-tdep.c @@ -0,0 +1,32 @@ + +h8300_skip_prologue() +{ + + printf("skip prologue\n"); + + abort(); + +} + +h8300_pop_frame() +{ + printf("pop frame\n"); + +} + +print_insn() +{ + printf("print insn\n"); + +} + + + +FRAME_CHAIN() +{ + + printf("Frame chain\n"); + +} + + diff --git a/gdb/hds-tdep.c b/gdb/hds-tdep.c new file mode 100755 index 0000000..139597f --- /dev/null +++ b/gdb/hds-tdep.c @@ -0,0 +1,2 @@ + + diff --git a/gdb/tm-h8300.h b/gdb/tm-h8300.h new file mode 100644 index 0000000..8185e40 --- /dev/null +++ b/gdb/tm-h8300.h @@ -0,0 +1,264 @@ +/* Parameters for execution on a H8/300 series machine. + Copyright (C) 1992 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* Contributed by Steve Chamberlain sac@cygnus.com */ + +#define IEEE_FLOAT 1 + +/* Define the bit, byte, and word ordering of the machine. */ +#define TARGET_BYTE_ORDER BIG_ENDIAN + +#define TARGET_CHAR_BIT 8 +#define TARGET_SHORT_BIT 16 +#define TARGET_INT_BIT 16 +#define TARGET_LONG_BIT 32 +#define TARGET_LONG_LONG_BIT 64 +#define TARGET_FLOAT_BIT 32 +#define TARGET_DOUBLE_BIT 64 + + +/* 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. */ + + +#define SKIP_PROLOGUE(ip) {(ip) = h8300_skip_prologue(ip);} +extern CORE_ADDR h8300_skip_prologue (); + + +/* 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. */ + +#define SAVED_PC_AFTER_CALL(frame) \ +read_memory_integer (read_register (SP_REGNUM), 2) + +/* Stack grows downward. */ + +#define INNER_THAN < + +/* Sequence of bytes for breakpoint instruction. + This is a TRAP instruction. The last 4 bits (0xf below) is the + vector. Systems which don't use 0xf should define BPT_VECTOR + themselves before including this file. */ + + +#define BPT_VECTOR 0xf + + + +#define BREAKPOINT {0x4e, (0x40 | BPT_VECTOR)} + + +/* 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 2 + + +/* Nonzero if instruction at PC is a return instruction. */ +/* Allow any of the return instructions, including a trapv and a return + from interupt. */ + +#define ABOUT_TO_RETURN(pc) ((read_memory_integer (pc, 2) & ~0x3) == 0x4e74) + +/* Return 1 if P points to an invalid floating point value. */ + +#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */ + +/* Say how long registers are. */ + +#define REGISTER_TYPE short + +# define NUM_REGS 10 +# define REGISTER_BYTES (10*2) + + +/* Index within `registers' of the first byte of the space for + register N. */ + +#define REGISTER_BYTE(N) ((N) * 2) + +/* Number of bytes of storage in the actual machine representation + for register N. On the H8/300, all regs are 2 bytes. */ + +#define REGISTER_RAW_SIZE(N) 2 + +/* Number of bytes of storage in the program's representation + for register N. On the H8/300, all regs are 2 bytes. */ + +#define REGISTER_VIRTUAL_SIZE(N) 2 + +/* Largest value REGISTER_RAW_SIZE can have. */ + +#define MAX_REGISTER_RAW_SIZE 2 + +/* Largest value REGISTER_VIRTUAL_SIZE can have. */ + +#define MAX_REGISTER_VIRTUAL_SIZE 2 + +/* Nonzero if register N requires conversion + from raw format to virtual format. */ + +#define REGISTER_CONVERTIBLE(N) 0 + +/* Convert data from raw format for register REGNUM + to virtual format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) bcopy ((FROM), (TO), 2); + +/* Convert data from virtual format for register REGNUM + to raw format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) bcopy ((FROM), (TO), 2); + +/* Return the GDB type object for the "standard" data type + of data in register N. */ + +#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int + + +/* Initializer for an array of names of registers. + Entries beyond the first NUM_REGS are ignored. */ + +#define REGISTER_NAMES \ + {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "sp","ccr","pc"} + + +/* 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 FP_REGNUM 6 /* Contains address of executing stack frame */ +#define SP_REGNUM 7 /* Contains address of top of stack */ +#define CCR_REGNUM 8 /* Contains processor status */ +#define PC_REGNUM 9 /* Contains program counter */ + +/* Store the address of the place in which to copy the structure the + subroutine will return. This is called from call_function. */ + +#define STORE_STRUCT_RETURN(ADDR, SP) \ + { write_register (0, (ADDR)); abort(); } + +/* 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. This is assuming that floating point values are returned + as doubles in d0/d1. */ + + +#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ + bcopy ((char *)(REGBUF) + \ + (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)), \ + VALBUF, TYPE_LENGTH(TYPE)) + + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. Assumes floats are passed + in d0/d1. */ + + +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + write_register_bytes (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) (*(CORE_ADDR *)(REGBUF)) + +/* Describe the pointer in each stack frame to the previous stack frame + (its caller). */ + +/* FRAME_CHAIN takes a frame's nominal address + and produces the frame's chain-pointer. + + However, if FRAME_CHAIN_VALID returns zero, + it means the given frame is the outermost one and has no caller. */ + +/* In the case of the H8/300, the frame's nominal address + is the address of a 2-byte word containing the calling frame's address. */ + + + + +/* Use the alternate method of avoiding running up off the end of + the frame chain or following frames back into the startup code. + See the comments in blockframe.c */ + +#define FRAME_CHAIN_VALID(chain, thisframe) \ + (chain != 0 \ + && !(inside_main_scope ((thisframe)->pc)) \ + && !(inside_entry_scope ((thisframe)->pc))) + + +/* Define other aspects of the stack frame. */ + +/* 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) \ + (FRAMELESS) = frameless_look_for_prologue(FI) + +#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 2, 2)) + +#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 + now that the C compiler delays popping them. */ + +#define FRAME_NUM_ARGS(val,fi) (val = -1) + + +/* Return number of bytes at start of arglist that are not really args. */ + +#define FRAME_ARGS_SKIP 4 + +/* 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) abort(); + + +/* Push an empty stack frame, to record the current PC, etc. */ + +#define PUSH_DUMMY_FRAME { h8300_push_dummy_frame (); } + +/* Discard from the stack the innermost frame, restoring all registers. */ + +#define POP_FRAME { h8300_pop_frame (); } + |