/* OBSOLETE /* Definitions to target GDB to a merlin under utek 2.1 */ /* OBSOLETE Copyright 1986, 1987, 1989, 1991, 1993, 1994, 1998, 1999, 2000 */ /* OBSOLETE Free Software Foundation, Inc. */ /* OBSOLETE */ /* OBSOLETE This file is part of GDB. */ /* OBSOLETE */ /* OBSOLETE This program is free software; you can redistribute it and/or modify */ /* OBSOLETE it under the terms of the GNU General Public License as published by */ /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ /* OBSOLETE (at your option) any later version. */ /* OBSOLETE */ /* OBSOLETE This program is distributed in the hope that it will be useful, */ /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ /* OBSOLETE GNU General Public License for more details. */ /* OBSOLETE */ /* OBSOLETE You should have received a copy of the GNU General Public License */ /* OBSOLETE along with this program; if not, write to the Free Software */ /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ /* OBSOLETE Boston, MA 02111-1307, USA. */ */ /* OBSOLETE */ /* OBSOLETE #include "regcache.h" */ /* OBSOLETE */ /* OBSOLETE #define TARGET_BYTE_ORDER LITTLE_ENDIAN */ /* OBSOLETE */ /* OBSOLETE /* Offset from address of function to start of its code. */ /* OBSOLETE Zero on most machines. */ */ /* OBSOLETE */ /* OBSOLETE #define FUNCTION_START_OFFSET 0 */ /* OBSOLETE */ /* OBSOLETE /* Advance PC across any function entry prologue instructions */ /* OBSOLETE to reach some "real" code. */ */ /* OBSOLETE */ /* OBSOLETE extern CORE_ADDR merlin_skip_prologue (CORE_ADDR); */ /* OBSOLETE #define SKIP_PROLOGUE(pc) (merlin_skip_prologue (pc)) */ /* OBSOLETE */ /* OBSOLETE /* Immediately after a function call, return the saved pc. */ /* OBSOLETE Can't always go through the frames for this because on some machines */ /* OBSOLETE the new frame is not set up until the new function executes */ /* OBSOLETE some instructions. */ */ /* OBSOLETE */ /* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) \ */ /* OBSOLETE read_memory_integer (read_register (SP_REGNUM), 4) */ /* OBSOLETE */ /* OBSOLETE /* Address of end of stack space. */ */ /* OBSOLETE */ /* OBSOLETE #define STACK_END_ADDR (0x800000) */ /* OBSOLETE */ /* OBSOLETE /* Stack grows downward. */ */ /* OBSOLETE */ /* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ /* OBSOLETE */ /* OBSOLETE /* Sequence of bytes for breakpoint instruction. */ */ /* OBSOLETE */ /* OBSOLETE #define BREAKPOINT {0xf2} */ /* OBSOLETE */ /* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */ /* OBSOLETE This is often the number of bytes in BREAKPOINT */ /* OBSOLETE but not always. */ */ /* OBSOLETE */ /* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */ /* OBSOLETE */ /* OBSOLETE /* Define this to say that the "svc" insn is followed by */ /* OBSOLETE codes in memory saying which kind of system call it is. */ */ /* OBSOLETE */ /* OBSOLETE #define NS32K_SVC_IMMED_OPERANDS */ /* OBSOLETE */ /* OBSOLETE /* Say how long (ordinary) registers are. This is a piece of bogosity */ /* OBSOLETE used in push_word and a few other places; REGISTER_RAW_SIZE is the */ /* OBSOLETE real way to know how big a register is. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_SIZE 4 */ /* OBSOLETE */ /* OBSOLETE /* Number of machine registers */ */ /* OBSOLETE */ /* OBSOLETE #define NUM_REGS 25 */ /* OBSOLETE */ /* OBSOLETE #define NUM_GENERAL_REGS 8 */ /* OBSOLETE */ /* OBSOLETE /* Initializer for an array of names of registers. */ /* OBSOLETE There should be NUM_REGS strings in this initializer. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_NAMES {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ */ /* OBSOLETE "pc", "sp", "fp", "ps", \ */ /* OBSOLETE "fsr", \ */ /* OBSOLETE "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ */ /* OBSOLETE "l0", "l1", "l2", "l3", "l4", \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Register numbers of various important registers. */ /* OBSOLETE Note that some of these values are "real" register numbers, */ /* OBSOLETE and correspond to the general registers of the machine, */ /* OBSOLETE and some are "phony" register numbers which are too large */ /* OBSOLETE to be actual register numbers as far as the user is concerned */ /* OBSOLETE but do serve to get the desired values when passed to read_register. */ */ /* OBSOLETE */ /* OBSOLETE #define AP_REGNUM FP_REGNUM */ /* OBSOLETE #define FP_REGNUM 10 /* Contains address of executing stack frame */ */ /* OBSOLETE #define SP_REGNUM 9 /* Contains address of top of stack */ */ /* OBSOLETE #define PC_REGNUM 8 /* Contains program counter */ */ /* OBSOLETE #define PS_REGNUM 11 /* Contains processor status */ */ /* OBSOLETE #define FPS_REGNUM 12 /* Floating point status register */ */ /* OBSOLETE #define FP0_REGNUM 13 /* Floating point register 0 */ */ /* OBSOLETE #define LP0_REGNUM 21 /* Double register 0 (same as FP0) */ */ /* OBSOLETE */ /* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ /* OBSOLETE register state, the array `registers'. */ */ /* OBSOLETE #define REGISTER_BYTES ((NUM_REGS - 4) * sizeof (int) + 4 * sizeof (double)) */ /* OBSOLETE */ /* OBSOLETE /* Index within `registers' of the first byte of the space for */ /* OBSOLETE register N. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_BYTE(N) ((N) >= LP0_REGNUM ? \ */ /* OBSOLETE LP0_REGNUM * 4 + ((N) - LP0_REGNUM) * 8 : (N) * 4) */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the actual machine representation */ /* OBSOLETE for register N. On the 32000, all regs are 4 bytes */ /* OBSOLETE except for the doubled floating registers. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_RAW_SIZE(N) ((N) >= LP0_REGNUM ? 8 : 4) */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the program's representation */ /* OBSOLETE for register N. On the 32000, all regs are 4 bytes */ /* OBSOLETE except for the doubled floating registers. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) ((N) >= LP0_REGNUM ? 8 : 4) */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. */ */ /* OBSOLETE */ /* OBSOLETE #define MAX_REGISTER_RAW_SIZE 8 */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. */ */ /* OBSOLETE */ /* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE 8 */ /* OBSOLETE */ /* OBSOLETE /* Return the GDB type object for the "standard" data type */ /* OBSOLETE of data in register N. */ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) \ */ /* OBSOLETE ((N) >= FP0_REGNUM ? \ */ /* OBSOLETE ((N) >= LP0_REGNUM ? \ */ /* OBSOLETE builtin_type_double \ */ /* OBSOLETE : builtin_type_float) \ */ /* OBSOLETE : builtin_type_int) */ /* OBSOLETE */ /* OBSOLETE /* Store the address of the place in which to copy the structure the */ /* OBSOLETE subroutine will return. This is called from call_function. */ /* OBSOLETE */ /* OBSOLETE On this machine this is a no-op, as gcc doesn't run on it yet. */ /* OBSOLETE This calling convention is not used. */ */ /* OBSOLETE */ /* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) */ /* OBSOLETE */ /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ /* OBSOLETE a function return value of type TYPE, and copy that, in virtual format, */ /* OBSOLETE into VALBUF. */ */ /* OBSOLETE */ /* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */ /* OBSOLETE memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)) */ /* OBSOLETE */ /* OBSOLETE /* Write into appropriate registers a function return value */ /* OBSOLETE of type TYPE, given in virtual format. */ */ /* OBSOLETE */ /* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */ /* OBSOLETE write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) */ /* OBSOLETE */ /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ /* OBSOLETE the address in which a function should return its structure value, */ /* OBSOLETE as a CORE_ADDR (or an expression that can be used as one). */ */ /* OBSOLETE */ /* OBSOLETE #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF)) */ /* OBSOLETE */ /* OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame */ /* OBSOLETE (its caller). */ */ /* OBSOLETE */ /* OBSOLETE /* FRAME_CHAIN takes a frame's nominal address */ /* OBSOLETE and produces the frame's chain-pointer. */ */ /* OBSOLETE */ /* OBSOLETE /* In the case of the Merlin, the frame's nominal address is the FP value, */ /* OBSOLETE and at that address is saved previous FP value as a 4-byte word. */ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_CHAIN(thisframe) \ */ /* OBSOLETE (!inside_entry_file ((thisframe)->pc) ? \ */ /* OBSOLETE read_memory_integer ((thisframe)->frame, 4) :\ */ /* OBSOLETE 0) */ /* OBSOLETE */ /* OBSOLETE /* Define other aspects of the stack frame. */ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) */ /* OBSOLETE */ /* OBSOLETE /* compute base of arguments */ */ /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) */ /* OBSOLETE */ /* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) */ /* OBSOLETE */ /* OBSOLETE /* Return number of args passed to a frame. */ /* OBSOLETE Can return -1, meaning no way to tell. */ */ /* OBSOLETE */ /* OBSOLETE extern int merlin_frame_num_args (struct frame_info *fi); */ /* OBSOLETE #define FRAME_NUM_ARGS(fi) (merlin_frame_num_args ((fi))) */ /* OBSOLETE */ /* OBSOLETE /* Return number of bytes at start of arglist that are not really args. */ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_ARGS_SKIP 8 */ /* OBSOLETE */ /* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */ /* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */ /* OBSOLETE This includes special registers such as pc and fp saved in special */ /* OBSOLETE ways in the stack frame. sp is even more special: */ /* OBSOLETE the address we return for it IS the sp for the next frame. */ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */ /* OBSOLETE { int regmask,regnum; \ */ /* OBSOLETE int localcount; \ */ /* OBSOLETE CORE_ADDR enter_addr; \ */ /* OBSOLETE CORE_ADDR next_addr; \ */ /* OBSOLETE \ */ /* OBSOLETE enter_addr = get_pc_function_start ((frame_info)->pc); \ */ /* OBSOLETE regmask = read_memory_integer (enter_addr+1, 1); \ */ /* OBSOLETE localcount = ns32k_localcount (enter_addr); \ */ /* OBSOLETE next_addr = (frame_info)->frame + localcount; \ */ /* OBSOLETE for (regnum = 0; regnum < 8; regnum++, regmask >>= 1) \ */ /* OBSOLETE (frame_saved_regs).regs[regnum] \ */ /* OBSOLETE = (regmask & 1) ? (next_addr -= 4) : 0; \ */ /* OBSOLETE (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 4; \ */ /* OBSOLETE (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4; \ */ /* OBSOLETE (frame_saved_regs).regs[FP_REGNUM] \ */ /* OBSOLETE = read_memory_integer ((frame_info)->frame, 4); } */ /* OBSOLETE */ /* OBSOLETE */ /* OBSOLETE /* Things needed for making the inferior call functions. */ */ /* OBSOLETE */ /* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. */ */ /* OBSOLETE */ /* OBSOLETE #define PUSH_DUMMY_FRAME \ */ /* OBSOLETE { register CORE_ADDR sp = read_register (SP_REGNUM); \ */ /* OBSOLETE register int regnum; \ */ /* OBSOLETE sp = push_word (sp, read_register (PC_REGNUM)); \ */ /* OBSOLETE sp = push_word (sp, read_register (FP_REGNUM)); \ */ /* OBSOLETE write_register (FP_REGNUM, sp); \ */ /* OBSOLETE for (regnum = 0; regnum < 8; regnum++) \ */ /* OBSOLETE sp = push_word (sp, read_register (regnum)); \ */ /* OBSOLETE write_register (SP_REGNUM, sp); \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Discard from the stack the innermost frame, restoring all registers. */ */ /* OBSOLETE */ /* OBSOLETE #define POP_FRAME \ */ /* OBSOLETE { register struct frame_info *frame = get_current_frame (); \ */ /* OBSOLETE register CORE_ADDR fp; \ */ /* OBSOLETE register int regnum; \ */ /* OBSOLETE struct frame_saved_regs fsr; \ */ /* OBSOLETE struct frame_info *fi; \ */ /* OBSOLETE fp = frame->frame; \ */ /* OBSOLETE get_frame_saved_regs (frame, &fsr); \ */ /* OBSOLETE for (regnum = 0; regnum < 8; regnum++) \ */ /* OBSOLETE if (fsr.regs[regnum]) \ */ /* OBSOLETE write_register (regnum, read_memory_integer (fsr.regs[regnum], 4)); \ */ /* OBSOLETE write_register (FP_REGNUM, read_memory_integer (fp, 4)); \ */ /* OBSOLETE write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); \ */ /* OBSOLETE write_register (SP_REGNUM, fp + 8); \ */ /* OBSOLETE flush_cached_frames (); \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* This sequence of words is the instructions */ /* OBSOLETE enter 0xff,0 82 ff 00 */ /* OBSOLETE jsr @0x00010203 7f ae c0 01 02 03 */ /* OBSOLETE adjspd 0x69696969 7f a5 01 02 03 04 */ /* OBSOLETE bpt f2 */ /* OBSOLETE Note this is 16 bytes. */ */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY { 0x7f00ff82, 0x0201c0ae, 0x01a57f03, 0xf2040302 } */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_START_OFFSET 3 */ /* OBSOLETE #define CALL_DUMMY_LENGTH 16 */ /* OBSOLETE #define CALL_DUMMY_ADDR 5 */ /* OBSOLETE #define CALL_DUMMY_NARGS 11 */ /* OBSOLETE */ /* OBSOLETE /* Insert the specified number of args and function address */ /* OBSOLETE into a call sequence of the above form stored at DUMMYNAME. */ */ /* OBSOLETE */ /* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \ */ /* OBSOLETE { int flipped = fun | 0xc0000000; \ */ /* OBSOLETE flip_bytes (&flipped, 4); \ */ /* OBSOLETE *((int *) (((char *) dummyname)+CALL_DUMMY_ADDR)) = flipped; \ */ /* OBSOLETE flipped = - nargs * 4; \ */ /* OBSOLETE flip_bytes (&flipped, 4); \ */ /* OBSOLETE *((int *) (((char *) dummyname)+CALL_DUMMY_NARGS)) = flipped; \ */ /* OBSOLETE } */