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Diffstat (limited to 'gdb/config/h8300/tm-h8300.h')
-rw-r--r-- | gdb/config/h8300/tm-h8300.h | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/gdb/config/h8300/tm-h8300.h b/gdb/config/h8300/tm-h8300.h new file mode 100644 index 00000000000..08c8cbd808a --- /dev/null +++ b/gdb/config/h8300/tm-h8300.h @@ -0,0 +1,314 @@ +/* Parameters for execution on a H8/300 series machine. + Copyright 1992, 1993, 1994, 1996, 1998, 1999, 2000 + 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" + +/* Contributed by Steve Chamberlain sac@cygnus.com */ + +struct frame_info; +struct frame_saved_regs; +struct value; +struct type; + +/* 1 if debugging H8/300H application */ + +/* NOTE: ezannoni 2000-07-18: these variables are part of sim, defined + in sim/h8300/compile.c. They really should not be used this + way. Because of this we cannot get rid of the macro + GDB_TARGET_IS_H8300 in remote-e7000.c */ +extern int h8300hmode; +extern int h8300smode; + +/* Number of bytes in a word */ + +#define BINWORD (h8300hmode?4:2) + +#define EXTRA_FRAME_INFO \ + struct frame_saved_regs *fsr; \ + CORE_ADDR from_pc; \ + CORE_ADDR args_pointer;\ + CORE_ADDR locals_pointer ; + +/* Zero the frame_saved_regs pointer when the frame is initialized, + so that FRAME_FIND_SAVED_REGS () will know to allocate and + initialize a frame_saved_regs struct the first time it is called. + Set the arg_pointer to -1, which is not valid; 0 and other values + indicate real, cached values. */ + +#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ + h8300_init_extra_frame_info (fromleaf, fi) + +extern void h8300_init_extra_frame_info (); + +#undef TARGET_INT_BIT +#define TARGET_INT_BIT 16 +#undef TARGET_LONG_BIT +#define TARGET_LONG_BIT 32 +#undef TARGET_PTR_BIT +#define TARGET_PTR_BIT (h8300hmode ? 32:16) + +/* 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) (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_unsigned_integer (read_register (SP_REGNUM), BINWORD) + +/* Stack grows downward. */ + +#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) + +/*#define BREAKPOINT {0x7A, 0xFF} */ +#define BREAKPOINT {0x01, 0x80} /* Sleep */ +#define REMOTE_BREAKPOINT { 0x57, 0x30} /* trapa #3 */ +/* 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_SIZE 4 + +#define NUM_REGS 14 + +#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. On the H8/300, all regs are 2 bytes. */ + +#define REGISTER_RAW_SIZE(N) (h8300hmode ? 4 : 2) + +/* Number of bytes of storage in the program's representation + for register N. */ + +#define REGISTER_VIRTUAL_SIZE(N) (h8300hmode ? 4 : 2) + +/* 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) \ +(h8300hmode ? builtin_type_unsigned_long : builtin_type_unsigned_short) + +/* 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","cycles","tick","inst",""} + +/* An array of names of registers. */ + +extern char **h8300_register_names; +#define REGISTER_NAME(i) h8300_register_names[i] + +/* 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 ARG0_REGNUM 0 /* first reg in which an arg may be passed */ +#define ARGLAST_REGNUM 2 /* last reg in which an arg may be passed */ +#define FP_REGNUM 6 /* Contain saddress 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 */ +#define EXR_REGNUM 11 /* Contains processor status */ + +/* 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. */ + +/* FIXME: Won't work with both h8/300's. */ + +extern void h8300_extract_return_value (struct type *, char *, char *); +#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ + h8300_extract_return_value (TYPE, (char *)(REGBUF), (char *)(VALBUF)) + +/* Write into appropriate registers a function return value + of type TYPE, given in virtual format. Assumes floats are passed + in d0/d1. */ +/* FIXME: Won't work with both h8/300's. */ + +extern void h8300_store_return_value (struct type *, char *); +#define STORE_RETURN_VALUE(TYPE,VALBUF) \ + h8300_store_return_value(TYPE, (char *) (VALBUF)) + +/* struct passing and returning stuff */ +#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \ + write_register (0, STRUCT_ADDR) + +#define USE_STRUCT_CONVENTION(gcc_p, type) (1) + +/* 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_BYTE (0), \ + REGISTER_RAW_SIZE (0)) + +/* 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. */ + +#define FRAME_CHAIN(FRAME) h8300_frame_chain(FRAME) +CORE_ADDR h8300_frame_chain (struct frame_info *); + +/* 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 objfile.h */ + +#define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi) + +/* 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_look_for_prologue (FI)) + +/* Any function with a frame looks like this + SECOND ARG + FIRST ARG + RET PC + SAVED R2 + SAVED R3 + SAVED FP <-FP POINTS HERE + LOCALS0 + LOCALS1 <-SP POINTS HERE + */ + +#define FRAME_SAVED_PC(FRAME) h8300_frame_saved_pc(FRAME) +extern CORE_ADDR h8300_frame_saved_pc (struct frame_info *); + +#define FRAME_ARGS_ADDRESS(fi) h8300_frame_args_address(fi) +extern CORE_ADDR h8300_frame_args_address (struct frame_info *); + +#define FRAME_LOCALS_ADDRESS(fi) h8300_frame_locals_address(fi) +extern CORE_ADDR h8300_frame_locals_address (struct frame_info *); + +/* 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(fi) (-1) + +/* Return number of bytes at start of arglist that are not really args. */ + +#define FRAME_ARGS_SKIP 0 + +/* 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) \ + h8300_frame_find_saved_regs(frame_info, &(frame_saved_regs)) +extern void h8300_frame_find_saved_regs (struct frame_info *, + struct frame_saved_regs *); + + +typedef unsigned short INSN_WORD; + + +#define PRINT_REGISTER_HOOK(regno) h8300_print_register_hook(regno) +extern void h8300_print_register_hook (int); + +#define GDB_TARGET_IS_H8300 + +#define NUM_REALREGS (h8300smode?11:10) +#define NOP { 0x01, 0x80} /* A sleep insn */ + +#define BELIEVE_PCC_PROMOTION 1 + +/* + * CALL_DUMMY stuff: + */ + +#define USE_GENERIC_DUMMY_FRAMES 1 +#define CALL_DUMMY {0} +#define CALL_DUMMY_LENGTH (0) +#define CALL_DUMMY_ADDRESS() entry_point_address () +#define CALL_DUMMY_LOCATION AT_ENTRY_POINT +#define CALL_DUMMY_START_OFFSET (0) +#define CALL_DUMMY_BREAKPOINT_OFFSET (0) + +extern CORE_ADDR h8300_push_arguments (int nargs, + struct value **args, + CORE_ADDR sp, + unsigned char struct_return, + CORE_ADDR struct_addr); +extern CORE_ADDR h8300_push_return_address (CORE_ADDR, CORE_ADDR); +extern void h8300_pop_frame (void); + +#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) +#define FIX_CALL_DUMMY(DUMMY, START_SP, FUNADDR, NARGS, ARGS, TYPE, GCCP) +#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ + (h8300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)) +/* Push an empty stack frame, to record the current PC, etc. */ +#define PUSH_DUMMY_FRAME generic_push_dummy_frame () +/* Discard from the stack the innermost frame, restoring all registers. */ +#define POP_FRAME h8300_pop_frame () +#define PUSH_RETURN_ADDRESS(PC, SP) h8300_push_return_address (PC, SP) + +/* 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) |