| /* Functions specific to running gdb native on a Motorola Delta Series sysV68. |
| Copyright 1993, 1996, 1998, 2000 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include <sys/signal.h> /* for MAXSIG in sys/user.h */ |
| #include <sys/types.h> /* for ushort in sys/dir.h */ |
| #include <sys/dir.h> /* for struct direct in sys/user.h */ |
| #include <sys/user.h> |
| |
| #include <nlist.h> |
| |
| #if !defined (offsetof) |
| #define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) |
| #endif |
| |
| /* Return the address in the core dump or inferior of register REGNO. |
| BLOCKEND is the address of the end of the user structure. */ |
| |
| CORE_ADDR |
| register_addr (int regno, CORE_ADDR blockend) |
| { |
| static int sysv68reg[] = |
| {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, -1, 15, 16}; |
| |
| if (regno >= 0 && regno < sizeof (sysv68reg) / sizeof (sysv68reg[0])) |
| return blockend + sysv68reg[regno] * 4; |
| else if (regno < FPC_REGNUM) |
| return offsetof (struct user, u_fpu.regs.reg[regno - FP0_REGNUM][0]); |
| else if (regno == FPC_REGNUM) |
| return offsetof (struct user, u_fpu.regs.control); |
| else if (regno == FPS_REGNUM) |
| return offsetof (struct user, u_fpu.regs.status); |
| else if (regno == FPI_REGNUM) |
| return offsetof (struct user, u_fpu.regs.iaddr); |
| else |
| { |
| fprintf_unfiltered (gdb_stderr, "\ |
| Internal error: invalid register number %d in REGISTER_U_ADDR\n", |
| regno); |
| return blockend; |
| } |
| } |
| |
| CORE_ADDR kernel_u_addr; |
| |
| /* Read the value of the u area from the kernel. */ |
| void |
| _initialize_delta68_nat (void) |
| { |
| struct nlist nl[2]; |
| |
| nl[0].n_name = "u"; |
| nl[1].n_name = NULL; |
| if (nlist ("/sysV68", nl) == 0 && nl[0].n_scnum != 0) |
| kernel_u_addr = nl[0].n_value; |
| else |
| { |
| perror ("Cannot get kernel u area address"); |
| exit (1); |
| } |
| } |
| |
| clear_insn_cache (void) |
| { |
| #ifdef MCT_TEXT /* in sys/signal.h on sysV68 R3V7.1 */ |
| memctl (0, 4096, MCT_TEXT); |
| #endif |
| } |
| |
| kernel_u_size (void) |
| { |
| return sizeof (struct user); |
| } |