/* OBSOLETE /* Definitions to make GDB target for a tahoe running 4.3-Reno. */ /* OBSOLETE Copyright 1986, 1987, 1989, 1991, 1992, 1993 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. *x/ */ /* OBSOLETE */ /* OBSOLETE /* */ /* OBSOLETE * Ported by the State University of New York at Buffalo by the Distributed */ /* OBSOLETE * Computer Systems Lab, Department of Computer Science, 1991. */ /* OBSOLETE *x/ */ /* OBSOLETE */ /* OBSOLETE #define TARGET_BYTE_ORDER BIG_ENDIAN */ /* OBSOLETE #define BITS_BIG_ENDIAN 0 */ /* OBSOLETE */ /* OBSOLETE /* Offset from address of function to start of its code. */ /* OBSOLETE Zero on most machines. *x/ */ /* OBSOLETE */ /* OBSOLETE #define FUNCTION_START_OFFSET 2 */ /* OBSOLETE */ /* OBSOLETE /* Advance PC across any function entry prologue instructions */ /* OBSOLETE to reach some "real" code. *x/ */ /* OBSOLETE */ /* OBSOLETE extern CORE_ADDR tahoe_skip_prologue (CORE_ADDR); */ /* OBSOLETE #define SKIP_PROLOGUE(pc) (tahoe_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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame) */ /* OBSOLETE */ /* OBSOLETE /* Wrong for cross-debugging. I don't know the real values. *x/ */ /* OBSOLETE #include <machine/param.h> */ /* OBSOLETE #define TARGET_UPAGES UPAGES */ /* OBSOLETE #define TARGET_NBPG NBPG */ /* OBSOLETE */ /* OBSOLETE /* Address of end of stack space. *x/ */ /* OBSOLETE */ /* OBSOLETE #define STACK_END_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG)) */ /* OBSOLETE */ /* OBSOLETE /* On BSD, sigtramp is in the u area. Can't check the exact */ /* OBSOLETE addresses because for cross-debugging we don't have target include */ /* OBSOLETE files around. This should be close enough. *x/ */ /* OBSOLETE #define IN_SIGTRAMP(pc, name) ((pc) >= STACK_END_ADDR && (pc < 0xc0000000)) */ /* OBSOLETE */ /* OBSOLETE /* Stack grows downward. *x/ */ /* OBSOLETE */ /* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ /* OBSOLETE */ /* OBSOLETE /* Sequence of bytes for breakpoint instruction. *x/ */ /* OBSOLETE */ /* OBSOLETE #define BREAKPOINT {0x30} */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */ /* OBSOLETE */ /* OBSOLETE /* Return 1 if P points to an invalid floating point value. */ /* OBSOLETE LEN is the length in bytes -- not relevant on the Tahoe. *x/ */ /* OBSOLETE */ /* OBSOLETE #define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000) */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_SIZE 4 */ /* OBSOLETE */ /* OBSOLETE /* Number of machine registers *x/ */ /* OBSOLETE */ /* OBSOLETE #define NUM_REGS 19 */ /* OBSOLETE */ /* OBSOLETE /* Initializer for an array of names of registers. */ /* OBSOLETE There should be NUM_REGS strings in this initializer. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_NAMES {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "fp", "sp", "pc", "ps", "al", "ah"} */ /* OBSOLETE */ /* OBSOLETE #define FP_REGNUM 13 /* Contains address of executing stack frame *x/ */ /* OBSOLETE #define SP_REGNUM 14 /* Contains address of top of stack *x/ */ /* OBSOLETE #define PC_REGNUM 15 /* Contains program counter *x/ */ /* OBSOLETE #define PS_REGNUM 16 /* Contains processor status *x/ */ /* OBSOLETE */ /* OBSOLETE #define AL_REGNUM 17 /* Contains accumulator *x/ */ /* OBSOLETE #define AH_REGNUM 18 */ /* OBSOLETE */ /* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ /* OBSOLETE register state, the array `registers'. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_BYTES (19*4) */ /* OBSOLETE */ /* OBSOLETE /* Index within `registers' of the first byte of the space for */ /* OBSOLETE register N. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_BYTE(N) ((N) * 4) */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the actual machine representation */ /* OBSOLETE for register N. On the tahoe, all regs are 4 bytes. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_RAW_SIZE(N) 4 */ /* OBSOLETE */ /* OBSOLETE /* Number of bytes of storage in the program's representation */ /* OBSOLETE for register N. On the tahoe, all regs are 4 bytes. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) 4 */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. *x/ */ /* OBSOLETE */ /* OBSOLETE #define MAX_REGISTER_RAW_SIZE 4 */ /* OBSOLETE */ /* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. *x/ */ /* OBSOLETE */ /* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE 4 */ /* OBSOLETE */ /* OBSOLETE /* Return the GDB type object for the "standard" data type */ /* OBSOLETE of data in register N. *x/ */ /* OBSOLETE */ /* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) 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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define STORE_STRUCT_RETURN(ADDR, SP) \ */ /* OBSOLETE { write_register (1, (ADDR)); } */ /* 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. *x/ */ /* 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. *x/ */ /* 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). *x/ */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE /* In the case of the Tahoe, the frame's nominal address is the FP value, */ /* OBSOLETE and it points to the old FP *x/ */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE /* Saved PC *x/ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame - 8, 4)) */ /* OBSOLETE */ /* OBSOLETE /* In most of GDB, getting the args address is too important to */ /* OBSOLETE just say "I don't know". *x/ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) */ /* OBSOLETE */ /* OBSOLETE /* Address to use as an anchor for finding local variables *x/ */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE extern int tahoe_frame_num_args (struct frame_info * fi); */ /* OBSOLETE #define FRAME_NUM_ARGS(fi) (tahoe_frame_num_args ((fi))) */ /* OBSOLETE */ /* OBSOLETE /* Return number of bytes at start of arglist that are not really args. *x/ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_ARGS_SKIP 0 */ /* 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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */ /* OBSOLETE { register int regnum; \ */ /* OBSOLETE register int rmask = read_memory_integer ((frame_info)->frame-4, 4) >> 16;\ */ /* OBSOLETE register CORE_ADDR next_addr; \ */ /* OBSOLETE memset (&frame_saved_regs, '\0', sizeof frame_saved_regs); \ */ /* OBSOLETE next_addr = (frame_info)->frame - 8; \ */ /* OBSOLETE for (regnum = 12; regnum >= 0; regnum--, rmask <<= 1) \ */ /* OBSOLETE (frame_saved_regs).regs[regnum] = (rmask & 0x1000) ? (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 - 8; \ */ /* OBSOLETE (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* Things needed for making the inferior call functions. *x/ */ /* OBSOLETE */ /* OBSOLETE /* Push an empty stack frame, to record the current PC, etc. *x/ */ /* OBSOLETE */ /* OBSOLETE #define PUSH_DUMMY_FRAME \ */ /* OBSOLETE { register CORE_ADDR sp = read_register (SP_REGNUM); \ */ /* OBSOLETE register int regnum; \ */ /* OBSOLETE printf("PUSH_DUMMY_FRAME\n"); \ */ /* OBSOLETE sp = push_word (sp, read_register (FP_REGNUM)); \ */ /* OBSOLETE write_register (FP_REGNUM, sp); \ */ /* OBSOLETE sp = push_word (sp, 0x1fff0004); /*SAVE MASK*x/ \ */ /* OBSOLETE sp = push_word (sp, read_register (PC_REGNUM)); \ */ /* OBSOLETE for (regnum = 12; regnum >= 0; 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. *x/ */ /* OBSOLETE */ /* OBSOLETE #define POP_FRAME \ */ /* OBSOLETE { register CORE_ADDR fp = read_register (FP_REGNUM); \ */ /* OBSOLETE register int regnum; \ */ /* OBSOLETE register int regmask = read_memory_integer (fp-4, 4); \ */ /* OBSOLETE printf("POP_FRAME\n"); \ */ /* OBSOLETE regmask >>= 16; \ */ /* OBSOLETE write_register (SP_REGNUM, fp+4); \ */ /* OBSOLETE write_register (PC_REGNUM, read_memory_integer(fp-8, 4)); \ */ /* OBSOLETE write_register (FP_REGNUM, read_memory_integer(fp, 4)); \ */ /* OBSOLETE fp -= 8; \ */ /* OBSOLETE for (regnum = 12; regnum >= 0; regnum--, regmask <<= 1) \ */ /* OBSOLETE if (regmask & 0x1000) \ */ /* OBSOLETE write_register (regnum, read_memory_integer (fp-=4, 4)); \ */ /* OBSOLETE flush_cached_frames (); \ */ /* OBSOLETE } */ /* OBSOLETE */ /* OBSOLETE /* This sequence of words is the instructions */ /* OBSOLETE calls #69, @#32323232 */ /* OBSOLETE bpt */ /* OBSOLETE Note this is 8 bytes. *x/ */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY {0xbf699f32, 0x32323230} */ /* OBSOLETE */ /* OBSOLETE /* Start execution at beginning of dummy *x/ */ /* OBSOLETE */ /* OBSOLETE #define CALL_DUMMY_START_OFFSET 0 */ /* OBSOLETE */ /* OBSOLETE /* Insert the specified number of args and function address */ /* OBSOLETE into a call sequence of the above form stored at DUMMYNAME. *x/ */ /* OBSOLETE */ /* OBSOLETE #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, valtype, using_gcc) \ */ /* OBSOLETE { int temp = (int) fun; \ */ /* OBSOLETE *((char *) dummyname + 1) = nargs; \ */ /* OBSOLETE memcpy((char *)dummyname+3,&temp,4); } */