93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
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/* Definitions to make GDB run on an ISI Optimum V (3.05) under 4.3bsd.
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Copyright 1987, 1989, 1992 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define HOST_BYTE_ORDER BIG_ENDIAN
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/* This has not been tested on ISI's running BSD 4.2, but it will probably
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work. */
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/* This is the amount to subtract from u.u_ar0
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to get the offset in the core file of the register values. */
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/*#define KERNEL_U_ADDR 0x10800000*/
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#define KERNEL_U_ADDR 0
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/* expects blockend to be u.u_ar0 */
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extern int rloc[]; /* Defined in isi-dep.c */
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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{ blockend &= UPAGES*NBPG - 1; \
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if (regno < 18) addr = (int)blockend + rloc[regno]*4; \
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else if (regno < 26) addr = (int) &((struct user *)0)->u_68881_regs \
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+ (regno - 18) * 12; \
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else if (regno < 29) addr = (int) &((struct user *)0)->u_68881_regs \
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+ 8 * 12 + (regno - 26) * 4; \
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}
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/* Interface definitions for kernel debugger KDB. */
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/* Map machine fault codes into signal numbers.
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First subtract 0, divide by 4, then index in a table.
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Faults for which the entry in this table is 0
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are not handled by KDB; the program's own trap handler
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gets to handle then. */
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#define FAULT_CODE_ORIGIN 0
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#define FAULT_CODE_UNITS 4
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#define FAULT_TABLE \
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{ 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
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0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
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0, 0, 0, 0, 0, 0, 0, 0, \
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SIGILL }
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/* Start running with a stack stretching from BEG to END.
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BEG and END should be symbols meaningful to the assembler.
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This is used only for kdb. */
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#define INIT_STACK(beg, end) \
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{ asm (".globl end"); \
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asm ("movl $ end, sp"); \
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asm ("clrl fp"); }
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/* Push the frame pointer register on the stack. */
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#define PUSH_FRAME_PTR \
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asm ("movel fp, -(sp)");
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/* Copy the top-of-stack to the frame pointer register. */
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#define POP_FRAME_PTR \
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asm ("movl (sp), fp");
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/* After KDB is entered by a fault, push all registers
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that GDB thinks about (all NUM_REGS of them),
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so that they appear in order of ascending GDB register number.
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The fault code will be on the stack beyond the last register. */
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#define PUSH_REGISTERS \
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{ asm ("clrw -(sp)"); \
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asm ("pea 10(sp)"); \
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asm ("movem $ 0xfffe,-(sp)"); }
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/* Assuming the registers (including processor status) have been
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pushed on the stack in order of ascending GDB register number,
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restore them and return to the address in the saved PC register. */
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#define POP_REGISTERS \
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{ asm ("subil $8,28(sp)"); \
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asm ("movem (sp),$ 0xffff"); \
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asm ("rte"); }
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