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markom |
/* OBSOLETE /* Definitions to target GDB on an ISI Optimum V (3.05) under 4.3bsd. */
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/* OBSOLETE Copyright 1987, 1989, 1991, 1993, 1999, 2000 */
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/* OBSOLETE Free Software Foundation, Inc. */
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/* OBSOLETE */
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/* OBSOLETE This file is part of GDB. */
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/* OBSOLETE */
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/* OBSOLETE This program is free software; you can redistribute it and/or modify */
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/* OBSOLETE it under the terms of the GNU General Public License as published by */
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/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */
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/* OBSOLETE (at your option) any later version. */
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/* OBSOLETE */
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/* OBSOLETE This program is distributed in the hope that it will be useful, */
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/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
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/* OBSOLETE GNU General Public License for more details. */
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/* OBSOLETE */
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/* OBSOLETE You should have received a copy of the GNU General Public License */
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/* OBSOLETE along with this program; if not, write to the Free Software */
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/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */
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/* OBSOLETE Boston, MA 02111-1307, USA. */ */
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/* OBSOLETE */
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/* OBSOLETE /* This has not been tested on ISI's running BSD 4.2, but it will probably */
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/* OBSOLETE work. */ */
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/* OBSOLETE */
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/* OBSOLETE /* Data segment starts at etext rounded up to DATAROUND in {N,Z}MAGIC files */ */
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/* OBSOLETE */
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/* OBSOLETE #define DATAROUND 0x20000 */
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/* OBSOLETE #define N_DATADDR(hdr) (hdr.a_magic != OMAGIC ? \ */
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/* OBSOLETE (hdr.a_text + DATAROUND) & ~(DATAROUND-1) : hdr.a_text) */
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/* OBSOLETE */
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/* OBSOLETE /* Text segment starts at sizeof (struct exec) in {N,Z}MAGIC files */ */
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/* OBSOLETE */
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/* OBSOLETE #define N_TXTADDR(hdr) (hdr.a_magic != OMAGIC ? sizeof (struct exec) : 0) */
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/* OBSOLETE */
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/* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */
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/* OBSOLETE This is often the number of bytes in BREAKPOINT */
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/* OBSOLETE but not always. */
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/* OBSOLETE On the ISI, the kernel resets the pc to the trap instr */ */
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/* OBSOLETE */
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/* OBSOLETE #define DECR_PC_AFTER_BREAK 0 */
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/* OBSOLETE */
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/* OBSOLETE */
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/* OBSOLETE /* Return number of args passed to a frame. */
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/* OBSOLETE Can return -1, meaning no way to tell. */ */
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/* OBSOLETE */
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/* OBSOLETE extern int isi_frame_num_args (struct frame_info *fi); */
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/* OBSOLETE #define FRAME_NUM_ARGS(fi) (isi_frame_num_args ((fi))) */
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/* OBSOLETE */
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/* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */
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/* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */
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/* OBSOLETE This includes special registers such as pc and fp saved in special */
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/* OBSOLETE ways in the stack frame. sp is even more special: */
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/* OBSOLETE the address we return for it IS the sp for the next frame. */ */
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/* OBSOLETE */
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/* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */
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/* OBSOLETE { register int regnum; \ */
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/* OBSOLETE register int regmask; \ */
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/* OBSOLETE register CORE_ADDR next_addr; \ */
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/* OBSOLETE register CORE_ADDR pc; \ */
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/* OBSOLETE register int insn; \ */
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/* OBSOLETE register int offset; \ */
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/* OBSOLETE memset (&frame_saved_regs, '\0', sizeof frame_saved_regs); \ */
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/* OBSOLETE if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM*4 - 8*12 - 4 \ */
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/* OBSOLETE && (frame_info)->pc <= (frame_info)->frame) \ */
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/* OBSOLETE { next_addr = (frame_info)->frame; \ */
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/* OBSOLETE pc = (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 8*12 - 4; }\ */
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/* OBSOLETE else \ */
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/* OBSOLETE { pc = get_pc_function_start ((frame_info)->pc); \ */
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/* OBSOLETE /* Verify we have a link a6 instruction next, \ */
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/* OBSOLETE or a branch followed by a link a6 instruction; \ */
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/* OBSOLETE if not we lose. If we win, find the address above the saved \ */
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/* OBSOLETE regs using the amount of storage from the link instruction. */\ */
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/* OBSOLETE retry: \ */
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/* OBSOLETE insn = read_memory_integer (pc, 2); \ */
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/* OBSOLETE if (insn == 044016) \ */
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/* OBSOLETE next_addr = (frame_info)->frame - read_memory_integer (pc += 2, 4), pc+=4; \ */
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/* OBSOLETE else if (insn == 047126) \ */
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/* OBSOLETE next_addr = (frame_info)->frame - read_memory_integer (pc += 2, 2), pc+=2; \ */
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/* OBSOLETE else if ((insn & 0177400) == 060000) /* bra insn */ \ */
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/* OBSOLETE { offset = insn & 0377; \ */
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/* OBSOLETE pc += 2; /* advance past bra */ \ */
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/* OBSOLETE if (offset == 0) /* bra #word */ \ */
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/* OBSOLETE offset = read_memory_integer (pc, 2), pc += 2; \ */
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/* OBSOLETE else if (offset == 0377) /* bra #long */ \ */
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/* OBSOLETE offset = read_memory_integer (pc, 4), pc += 4; \ */
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/* OBSOLETE pc += offset; \ */
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/* OBSOLETE goto retry; \ */
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/* OBSOLETE } else goto lose; \ */
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/* OBSOLETE /* If have an addal #-n, sp next, adjust next_addr. */ \ */
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/* OBSOLETE if ((0177777 & read_memory_integer (pc, 2)) == 0157774) \ */
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/* OBSOLETE next_addr += read_memory_integer (pc += 2, 4), pc += 4; \ */
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/* OBSOLETE } \ */
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/* OBSOLETE /* next should be a moveml to (sp) or -(sp) or a movl r,-(sp) */ \ */
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/* OBSOLETE insn = read_memory_integer (pc, 2), pc += 2; \ */
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/* OBSOLETE regmask = read_memory_integer (pc, 2); \ */
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/* OBSOLETE if ((insn & 0177760) == 022700) /* movl rn, (sp) */ \ */
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/* OBSOLETE (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr; \ */
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/* OBSOLETE else if ((insn & 0177760) == 024700) /* movl rn, -(sp) */ \ */
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/* OBSOLETE (frame_saved_regs).regs[(insn&7) + ((insn&010)?8:0)] = next_addr-=4; \ */
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/* OBSOLETE else if (insn == 0044327) /* moveml mask, (sp) */ \ */
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/* OBSOLETE { pc += 2; \ */
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/* OBSOLETE /* Regmask's low bit is for register 0, the first written */ \ */
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/* OBSOLETE next_addr -= 4; \ */
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/* OBSOLETE for (regnum = 0; regnum < 16; regnum++, regmask >>= 1) \ */
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/* OBSOLETE if (regmask & 1) \ */
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/* OBSOLETE (frame_saved_regs).regs[regnum] = (next_addr += 4); \ */
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/* OBSOLETE } else if (insn == 0044347) /* moveml mask, -(sp) */ \ */
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/* OBSOLETE { pc += 2; \ */
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/* OBSOLETE /* Regmask's low bit is for register 15, the first pushed */ \ */
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/* OBSOLETE for (regnum = 15; regnum >= 0; regnum--, regmask >>= 1) \ */
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/* OBSOLETE if (regmask & 1) \ */
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/* OBSOLETE (frame_saved_regs).regs[regnum] = (next_addr -= 4); } \ */
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/* OBSOLETE /* clrw -(sp); movw ccr,-(sp) may follow. */ \ */
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/* OBSOLETE if (read_memory_integer (pc, 2) == 041147 \ */
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/* OBSOLETE && read_memory_integer (pc+2, 2) == 042347) \ */
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/* OBSOLETE (frame_saved_regs).regs[PS_REGNUM] = (next_addr -= 4); \ */
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/* OBSOLETE lose: ; \ */
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/* OBSOLETE (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 8; \ */
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/* OBSOLETE (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \ */
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/* OBSOLETE (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 4; \ */
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/* OBSOLETE } */
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/* OBSOLETE */
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/* OBSOLETE /* The only reason this is here is the tm-isi.h reference below. It */
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/* OBSOLETE was moved back here from tm-m68k.h. FIXME? */ */
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/* OBSOLETE */
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/* OBSOLETE extern CORE_ADDR isi_skip_prologue (CORE_ADDR); */
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/* OBSOLETE #define SKIP_PROLOGUE(pc) (isi_skip_prologue (pc)) */
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/* OBSOLETE */
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/* OBSOLETE #include "m68k/tm-m68k.h" */
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