gdb/config/tahoe/tm-tahoe.h

   1 /* OBSOLETE /* Definitions to make GDB target for a tahoe running 4.3-Reno. */
   2 /* OBSOLETE    Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc. */
   3 /* OBSOLETE  */
   4 /* OBSOLETE    This file is part of GDB. */
   5 /* OBSOLETE  */
   6 /* OBSOLETE    This program is free software; you can redistribute it and/or modify */
   7 /* OBSOLETE    it under the terms of the GNU General Public License as published by */
   8 /* OBSOLETE    the Free Software Foundation; either version 2 of the License, or */
   9 /* OBSOLETE    (at your option) any later version. */
  10 /* OBSOLETE  */
  11 /* OBSOLETE    This program is distributed in the hope that it will be useful, */
  12 /* OBSOLETE    but WITHOUT ANY WARRANTY; without even the implied warranty of */
  13 /* OBSOLETE    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the */
  14 /* OBSOLETE    GNU General Public License for more details. */
  15 /* OBSOLETE  */
  16 /* OBSOLETE    You should have received a copy of the GNU General Public License */
  17 /* OBSOLETE    along with this program; if not, write to the Free Software */
  18 /* OBSOLETE    Foundation, Inc., 59 Temple Place - Suite 330, */
  19 /* OBSOLETE    Boston, MA 02111-1307, USA.  *x/ */
  20 /* OBSOLETE  */
  21 /* OBSOLETE /* */
  22 /* OBSOLETE  * Ported by the State University of New York at Buffalo by the Distributed */
  23 /* OBSOLETE  * Computer Systems Lab, Department of Computer Science, 1991. */
  24 /* OBSOLETE  *x/ */
  25 /* OBSOLETE  */
  26 /* OBSOLETE #define TARGET_BYTE_ORDER BIG_ENDIAN */
  27 /* OBSOLETE #define BITS_BIG_ENDIAN 0 */
  28 /* OBSOLETE  */
  29 /* OBSOLETE /* Offset from address of function to start of its code. */
  30 /* OBSOLETE    Zero on most machines.  *x/ */
  31 /* OBSOLETE  */
  32 /* OBSOLETE #define FUNCTION_START_OFFSET 2 */
  33 /* OBSOLETE  */
  34 /* OBSOLETE /* Advance PC across any function entry prologue instructions */
  35 /* OBSOLETE    to reach some "real" code.  *x/ */
  36 /* OBSOLETE  */
  37 /* OBSOLETE extern CORE_ADDR tahoe_skip_prologue PARAMS ((CORE_ADDR)); */
  38 /* OBSOLETE #define SKIP_PROLOGUE(pc) (tahoe_skip_prologue (pc)) */
  39 /* OBSOLETE  */
  40 /* OBSOLETE /* Immediately after a function call, return the saved pc. */
  41 /* OBSOLETE    Can't always go through the frames for this because on some machines */
  42 /* OBSOLETE    the new frame is not set up until the new function executes */
  43 /* OBSOLETE    some instructions.  *x/ */
  44 /* OBSOLETE  */
  45 /* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame) */
  46 /* OBSOLETE  */
  47 /* OBSOLETE /* Wrong for cross-debugging.  I don't know the real values.  *x/ */
  48 /* OBSOLETE #include <machine/param.h> */
  49 /* OBSOLETE #define TARGET_UPAGES UPAGES */
  50 /* OBSOLETE #define TARGET_NBPG NBPG */
  51 /* OBSOLETE  */
  52 /* OBSOLETE /* Address of end of stack space.  *x/ */
  53 /* OBSOLETE  */
  54 /* OBSOLETE #define STACK_END_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG)) */
  55 /* OBSOLETE  */
  56 /* OBSOLETE /* On BSD, sigtramp is in the u area.  Can't check the exact */
  57 /* OBSOLETE    addresses because for cross-debugging we don't have target include */
  58 /* OBSOLETE    files around.  This should be close enough.  *x/ */
  59 /* OBSOLETE #define IN_SIGTRAMP(pc, name) ((pc) >= STACK_END_ADDR && (pc < 0xc0000000)) */
  60 /* OBSOLETE  */
  61 /* OBSOLETE /* Stack grows downward.  *x/ */
  62 /* OBSOLETE  */
  63 /* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */
  64 /* OBSOLETE  */
  65 /* OBSOLETE /* Sequence of bytes for breakpoint instruction.  *x/ */
  66 /* OBSOLETE  */
  67 /* OBSOLETE #define BREAKPOINT {0x30} */
  68 /* OBSOLETE  */
  69 /* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */
  70 /* OBSOLETE    This is often the number of bytes in BREAKPOINT */
  71 /* OBSOLETE    but not always.  *x/ */
  72 /* OBSOLETE  */
  73 /* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */
  74 /* OBSOLETE  */
  75 /* OBSOLETE /* Return 1 if P points to an invalid floating point value. */
  76 /* OBSOLETE    LEN is the length in bytes -- not relevant on the Tahoe. *x/ */
  77 /* OBSOLETE  */
  78 /* OBSOLETE #define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000) */
  79 /* OBSOLETE  */
  80 /* OBSOLETE /* Say how long (ordinary) registers are.  This is a piece of bogosity */
  81 /* OBSOLETE    used in push_word and a few other places; REGISTER_RAW_SIZE is the */
  82 /* OBSOLETE    real way to know how big a register is.  *x/ */
  83 /* OBSOLETE  */
  84 /* OBSOLETE #define REGISTER_SIZE 4 */
  85 /* OBSOLETE  */
  86 /* OBSOLETE /* Number of machine registers *x/ */
  87 /* OBSOLETE  */
  88 /* OBSOLETE #define NUM_REGS 19 */
  89 /* OBSOLETE  */
  90 /* OBSOLETE /* Initializer for an array of names of registers. */
  91 /* OBSOLETE    There should be NUM_REGS strings in this initializer.  *x/ */
  92 /* OBSOLETE  */
  93 /* OBSOLETE #define REGISTER_NAMES {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "fp", "sp", "pc", "ps", "al", "ah"} */
  94 /* OBSOLETE  */
  95 /* OBSOLETE #define FP_REGNUM 13                /* Contains address of executing stack frame *x/ */
  96 /* OBSOLETE #define SP_REGNUM 14                /* Contains address of top of stack *x/ */
  97 /* OBSOLETE #define PC_REGNUM 15                /* Contains program counter *x/ */
  98 /* OBSOLETE #define PS_REGNUM 16                /* Contains processor status *x/ */
  99 /* OBSOLETE  */
 100 /* OBSOLETE #define AL_REGNUM 17                /* Contains accumulator *x/ */
 101 /* OBSOLETE #define AH_REGNUM 18 */
 102 /* OBSOLETE  */
 103 /* OBSOLETE /* Total amount of space needed to store our copies of the machine's */
 104 /* OBSOLETE    register state, the array `registers'.  *x/ */
 105 /* OBSOLETE  */
 106 /* OBSOLETE #define REGISTER_BYTES (19*4) */
 107 /* OBSOLETE  */
 108 /* OBSOLETE /* Index within `registers' of the first byte of the space for */
 109 /* OBSOLETE    register N.  *x/ */
 110 /* OBSOLETE  */
 111 /* OBSOLETE #define REGISTER_BYTE(N) ((N) * 4) */
 112 /* OBSOLETE  */
 113 /* OBSOLETE /* Number of bytes of storage in the actual machine representation */
 114 /* OBSOLETE    for register N.  On the tahoe, all regs are 4 bytes.  *x/ */
 115 /* OBSOLETE  */
 116 /* OBSOLETE #define REGISTER_RAW_SIZE(N) 4 */
 117 /* OBSOLETE  */
 118 /* OBSOLETE /* Number of bytes of storage in the program's representation */
 119 /* OBSOLETE    for register N.  On the tahoe, all regs are 4 bytes.  *x/ */
 120 /* OBSOLETE  */
 121 /* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) 4 */
 122 /* OBSOLETE  */
 123 /* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have.  *x/ */
 124 /* OBSOLETE  */
 125 /* OBSOLETE #define MAX_REGISTER_RAW_SIZE 4 */
 126 /* OBSOLETE  */
 127 /* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have.  *x/ */
 128 /* OBSOLETE  */
 129 /* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE 4 */
 130 /* OBSOLETE  */
 131 /* OBSOLETE /* Return the GDB type object for the "standard" data type */
 132 /* OBSOLETE    of data in register N.  *x/ */
 133 /* OBSOLETE  */
 134 /* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) builtin_type_int */
 135 /* OBSOLETE  */
 136 /* OBSOLETE /* Store the address of the place in which to copy the structure the */
 137 /* OBSOLETE    subroutine will return.  This is called from call_function. *x/ */
 138 /* OBSOLETE  */
 139 /* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \ */
 140 /* OBSOLETE   { write_register (1, (ADDR)); } */
 141 /* OBSOLETE  */
 142 /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */
 143 /* OBSOLETE    a function return value of type TYPE, and copy that, in virtual format, */
 144 /* OBSOLETE    into VALBUF.  *x/ */
 145 /* OBSOLETE  */
 146 /* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */
 147 /* OBSOLETE   memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)) */
 148 /* OBSOLETE  */
 149 /* OBSOLETE /* Write into appropriate registers a function return value */
 150 /* OBSOLETE    of type TYPE, given in virtual format.  *x/ */
 151 /* OBSOLETE  */
 152 /* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */
 153 /* OBSOLETE   write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) */
 154 /* OBSOLETE  */
 155 /* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */
 156 /* OBSOLETE    the address in which a function should return its structure value, */
 157 /* OBSOLETE    as a CORE_ADDR (or an expression that can be used as one).  *x/ */
 158 /* OBSOLETE  */
 159 /* OBSOLETE #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF)) */
 160 /* OBSOLETE  */
 161 /* OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame */
 162 /* OBSOLETE    (its caller). */
 163 /* OBSOLETE  */
 164 /* OBSOLETE    FRAME_CHAIN takes a frame's nominal address */
 165 /* OBSOLETE    and produces the frame's chain-pointer. *x/ */
 166 /* OBSOLETE  */
 167 /* OBSOLETE /* In the case of the Tahoe, the frame's nominal address is the FP value, */
 168 /* OBSOLETE    and it points to the old FP *x/ */
 169 /* OBSOLETE  */
 170 /* OBSOLETE #define FRAME_CHAIN(thisframe)  \ */
 171 /* OBSOLETE   (!inside_entry_file ((thisframe)->pc) ? \ */
 172 /* OBSOLETE    read_memory_integer ((thisframe)->frame, 4) :\ */
 173 /* OBSOLETE    0) */
 174 /* OBSOLETE  */
 175 /* OBSOLETE /* Define other aspects of the stack frame.  *x/ */
 176 /* OBSOLETE  */
 177 /* OBSOLETE /* Saved PC *x/ */
 178 /* OBSOLETE  */
 179 /* OBSOLETE #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame - 8, 4)) */
 180 /* OBSOLETE  */
 181 /* OBSOLETE /* In most of GDB, getting the args address is too important to */
 182 /* OBSOLETE    just say "I don't know". *x/ */
 183 /* OBSOLETE  */
 184 /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) */
 185 /* OBSOLETE  */
 186 /* OBSOLETE /* Address to use as an anchor for finding local variables *x/ */
 187 /* OBSOLETE  */
 188 /* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) */
 189 /* OBSOLETE  */
 190 /* OBSOLETE /* Return number of args passed to a frame. */
 191 /* OBSOLETE    Can return -1, meaning no way to tell.  *x/ */
 192 /* OBSOLETE  */
 193 /* OBSOLETE extern int tahoe_frame_num_args PARAMS ((struct frame_info * fi)); */
 194 /* OBSOLETE #define FRAME_NUM_ARGS(fi) (tahoe_frame_num_args ((fi))) */
 195 /* OBSOLETE  */
 196 /* OBSOLETE /* Return number of bytes at start of arglist that are not really args.  *x/ */
 197 /* OBSOLETE  */
 198 /* OBSOLETE #define FRAME_ARGS_SKIP 0 */
 199 /* OBSOLETE  */
 200 /* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */
 201 /* OBSOLETE    the addresses of the saved registers of frame described by FRAME_INFO. */
 202 /* OBSOLETE    This includes special registers such as pc and fp saved in special */
 203 /* OBSOLETE    ways in the stack frame.  sp is even more special: */
 204 /* OBSOLETE    the address we return for it IS the sp for the next frame.  *x/ */
 205 /* OBSOLETE  */
 206 /* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */
 207 /* OBSOLETE { register int regnum;     \ */
 208 /* OBSOLETE   register int rmask = read_memory_integer ((frame_info)->frame-4, 4) >> 16;\ */
 209 /* OBSOLETE   register CORE_ADDR next_addr;     \ */
 210 /* OBSOLETE   memset (&frame_saved_regs, '\0', sizeof frame_saved_regs);     \ */
 211 /* OBSOLETE   next_addr = (frame_info)->frame - 8;     \ */
 212 /* OBSOLETE   for (regnum = 12; regnum >= 0; regnum--, rmask <<= 1)  \ */
 213 /* OBSOLETE     (frame_saved_regs).regs[regnum] = (rmask & 0x1000) ? (next_addr -= 4) : 0;\ */
 214 /* OBSOLETE   (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 4;  \ */
 215 /* OBSOLETE   (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame - 8;  \ */
 216 /* OBSOLETE   (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame;      \ */
 217 /* OBSOLETE } */
 218 /* OBSOLETE  */
 219 /* OBSOLETE /* Things needed for making the inferior call functions.  *x/ */
 220 /* OBSOLETE  */
 221 /* OBSOLETE /* Push an empty stack frame, to record the current PC, etc.  *x/ */
 222 /* OBSOLETE  */
 223 /* OBSOLETE #define PUSH_DUMMY_FRAME \ */
 224 /* OBSOLETE { register CORE_ADDR sp = read_register (SP_REGNUM);        \ */
 225 /* OBSOLETE   register int regnum;                                      \ */
 226 /* OBSOLETE printf("PUSH_DUMMY_FRAME\n");                               \ */
 227 /* OBSOLETE   sp = push_word (sp, read_register (FP_REGNUM));   \ */
 228 /* OBSOLETE   write_register (FP_REGNUM, sp);                   \ */
 229 /* OBSOLETE   sp = push_word (sp, 0x1fff0004);   /*SAVE MASK*x/ \ */
 230 /* OBSOLETE   sp = push_word (sp, read_register (PC_REGNUM));   \ */
 231 /* OBSOLETE   for (regnum = 12; regnum >= 0; regnum--)          \ */
 232 /* OBSOLETE     sp = push_word (sp, read_register (regnum));    \ */
 233 /* OBSOLETE   write_register (SP_REGNUM, sp);                   \ */
 234 /* OBSOLETE } */
 235 /* OBSOLETE  */
 236 /* OBSOLETE /* Discard from the stack the innermost frame, restoring all registers.  *x/ */
 237 /* OBSOLETE  */
 238 /* OBSOLETE #define POP_FRAME  \ */
 239 /* OBSOLETE { register CORE_ADDR fp = read_register (FP_REGNUM);                        \ */
 240 /* OBSOLETE   register int regnum;                                                      \ */
 241 /* OBSOLETE   register int regmask = read_memory_integer (fp-4, 4);                     \ */
 242 /* OBSOLETE printf("POP_FRAME\n");                                                      \ */
 243 /* OBSOLETE   regmask >>= 16;                                                   \ */
 244 /* OBSOLETE   write_register (SP_REGNUM, fp+4);                                 \ */
 245 /* OBSOLETE   write_register (PC_REGNUM, read_memory_integer(fp-8, 4));         \ */
 246 /* OBSOLETE   write_register (FP_REGNUM, read_memory_integer(fp, 4));           \ */
 247 /* OBSOLETE   fp -= 8;                                                          \ */
 248 /* OBSOLETE   for (regnum = 12; regnum >= 0; regnum--, regmask <<= 1)           \ */
 249 /* OBSOLETE     if (regmask & 0x1000)                                                   \ */
 250 /* OBSOLETE       write_register (regnum, read_memory_integer (fp-=4, 4));              \ */
 251 /* OBSOLETE   flush_cached_frames ();                                           \ */
 252 /* OBSOLETE } */
 253 /* OBSOLETE  */
 254 /* OBSOLETE /* This sequence of words is the instructions */
 255 /* OBSOLETE    calls #69, @#32323232 */
 256 /* OBSOLETE    bpt */
 257 /* OBSOLETE    Note this is 8 bytes.  *x/ */
 258 /* OBSOLETE  */
 259 /* OBSOLETE #define CALL_DUMMY {0xbf699f32, 0x32323230} */
 260 /* OBSOLETE  */
 261 /* OBSOLETE /* Start execution at beginning of dummy *x/ */
 262 /* OBSOLETE  */
 263 /* OBSOLETE #define CALL_DUMMY_START_OFFSET 0 */
 264 /* OBSOLETE  */
 265 /* OBSOLETE /* Insert the specified number of args and function address */
 266 /* OBSOLETE    into a call sequence of the above form stored at DUMMYNAME.  *x/ */
 267 /* OBSOLETE  */
 268 /* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, valtype, using_gcc) \ */
 269 /* OBSOLETE { int temp = (int) fun;                             \ */
 270 /* OBSOLETE   *((char *) dummyname + 1) = nargs;                \ */
 271 /* OBSOLETE   memcpy((char *)dummyname+3,&temp,4); } */