1/* DPX2 host interface. 2 Copyright 1988, 1989, 1991, 1993, 1995, 2000 3 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22#include "defs.h" 23#include "gdbcore.h" 24 25#include "gdb_string.h" 26#include <sys/types.h> 27#include <sys/param.h> 28#include <sys/dir.h> 29#include <signal.h> 30#include <sys/user.h> 31#include <sys/reg.h> 32#include <sys/utsname.h> 33 34 35/* This table must line up with REGISTER_NAME in "m68k-tdep.c". */ 36/* symbols like 'A0' come from <sys/reg.h> */ 37static int regmap[] = 38{ 39 R0, R1, R2, R3, R4, R5, R6, R7, 40 A0, A1, A2, A3, A4, A5, A6, SP, 41 PS, PC, 42 FP0, FP1, FP2, FP3, FP4, FP5, FP6, FP7, 43 FP_CR, FP_SR, FP_IAR 44}; 45 46/* blockend is the value of u.u_ar0, and points to the 47 * place where D0 is stored 48 */ 49 50int 51dpx2_register_u_addr (int blockend, int regnum) 52{ 53 if (regnum < FP0_REGNUM) 54 return (blockend + 4 * regmap[regnum]); 55 else 56 return (int) &(((struct user *) 0)->u_fpstate[regmap[regnum]]); 57} 58 59/* This is the amount to subtract from u.u_ar0 60 to get the offset in the core file of the register values. 61 Unfortunately this is not provided in the system header files. 62 To make matters worse, this value also differs between 63 the dpx/2200 and dpx/2300 models and nlist is not available on the dpx2. 64 We use utsname() to decide on which model we are running. 65 FIXME: This breaks cross examination of core files (it would not be hard 66 to check whether u.u_ar0 is between 0x7fff5000 and 0x7fffc000 and if so 67 use 0x7fff5000 and if not use 0x7fffc000. FIXME). */ 68 69#define KERNEL_U_ADDR_200 0x7fff5000 70#define KERNEL_U_ADDR_300 0x7fffc000 71 72CORE_ADDR kernel_u_addr; 73 74void 75_initialize_dpx2_nat (void) 76{ 77 struct utsname uts; 78 79 if (uname (&uts) == 0 && strcmp (uts.machine, "DPX/2200") == 0) 80 kernel_u_addr = KERNEL_U_ADDR_200; 81 else 82 kernel_u_addr = KERNEL_U_ADDR_300; 83} 84