1/* Functions specific to running gdb native on a Motorola Delta Series sysV68. 2 Copyright 1993, 1996, 1998, 2000 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, 19 Boston, MA 02111-1307, USA. */ 20 21#include "defs.h" 22#include <sys/signal.h> /* for MAXSIG in sys/user.h */ 23#include <sys/types.h> /* for ushort in sys/dir.h */ 24#include <sys/dir.h> /* for struct direct in sys/user.h */ 25#include <sys/user.h> 26 27#include <nlist.h> 28 29#if !defined (offsetof) 30#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) 31#endif 32 33/* Return the address in the core dump or inferior of register REGNO. 34 BLOCKEND is the address of the end of the user structure. */ 35 36CORE_ADDR 37register_addr (int regno, CORE_ADDR blockend) 38{ 39 static int sysv68reg[] = 40 {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16}; 41 42 if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0])) 43 return blockend + sysv68reg[regno] * 4; 44 else if (regno < FPC_REGNUM) 45 return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]); 46 else if (regno == FPC_REGNUM) 47 return offsetof (struct user, u_fpu.regs.control); 48 else if (regno == FPS_REGNUM) 49 return offsetof (struct user, u_fpu.regs.status); 50 else if (regno == FPI_REGNUM) 51 return offsetof (struct user, u_fpu.regs.iaddr); 52 else 53 { 54 fprintf_unfiltered (gdb_stderr, "\ 55Internal error: invalid register number %d in REGISTER_U_ADDR\n", 56 regno); 57 return blockend; 58 } 59} 60 61CORE_ADDR kernel_u_addr; 62 63/* Read the value of the u area from the kernel. */ 64void 65_initialize_delta68_nat (void) 66{ 67 struct nlist nl[2]; 68 69 nl[0].n_name = "u"; 70 nl[1].n_name = NULL; 71 if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0) 72 kernel_u_addr = nl[0].n_value; 73 else 74 { 75 perror ("Cannot get kernel u area address"); 76 exit (1); 77 } 78} 79 80clear_insn_cache (void) 81{ 82#ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */ 83 memctl (0, 4096, MCT_TEXT); 84#endif 85} 86 87kernel_u_size (void) 88{ 89 return sizeof (struct user); 90} 91