gdb/config/m68k/nm-hp300bsd.h

   1 /* Parameters for Hewlett-Packard 9000/300 native support under bsd.
   2    Copyright 1986, 1987, 1989, 1991, 1992, 1993  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, Boston, MA 02111-1307, USA.  */
  19
  20 /* Detect whether this is 4.3 or 4.4.  */
  21
  22 #include <errno.h>
  23 #include <sys/param.h>
  24 #ifdef  BSD4_4
  25
  26 /* BSD 4.4 alpha or better */
  27
  28 /* We can attach to processes using ptrace.  */
  29
  30 #define ATTACH_DETACH
  31 #define PTRACE_ATTACH   10
  32 #define PTRACE_DETACH   11
  33
  34 /* The third argument of ptrace is declared as this type.  */
  35
  36 #define PTRACE_ARG3_TYPE        caddr_t
  37
  38 /* U_REGS_OFFSET is the offset of the registers within the u area for
  39    ptrace purposes.  */
  40 #define U_REGS_OFFSET \
  41   ptrace (PT_READ_U, inferior_pid, \
  42           (PTRACE_ARG3_TYPE) \
  43            (offsetof (struct user, u_kproc.kp_proc.p_md.md_regs)), 0) \
  44     - USRSTACK
  45
  46 /* No user structure in 4.4, registers are relative to kernel stack
  47    which is fixed.  */
  48 #define KERNEL_U_ADDR   0xFFF00000
  49
  50 /* FIXME: Is ONE_PROCESS_WRITETEXT still true now that the kernel has
  51    copy-on-write?  It not, move it to the 4.3-specific section below
  52    (now it is in xm-hp300bsd.h).  */
  53
  54 #else
  55
  56 /* This is BSD 4.3 or something like it.  */
  57
  58 /* Get kernel u area address at run-time using BSD style nlist ().  */
  59 #define KERNEL_U_ADDR_BSD
  60
  61 #endif
  62
  63 /* This was once broken for 4.4, but probably because we had the wrong
  64    KERNEL_U_ADDR.  */
  65
  66 /* This is a piece of magic that is given a register number REGNO
  67    and as BLOCKEND the address in the system of the end of the user structure
  68    and stores in ADDR the address in the kernel or core dump
  69    of that register.  */
  70
  71 #define REGISTER_U_ADDR(addr, blockend, regno)                          \
  72 {                                                                       \
  73   if (regno < PS_REGNUM)                                                \
  74     addr = (int) &((struct frame *)(blockend))->f_regs[regno];          \
  75   else if (regno == PS_REGNUM)                                          \
  76     addr = (int) &((struct frame *)(blockend))->f_stackadj;             \
  77   else if (regno == PC_REGNUM)                                          \
  78     addr = (int) &((struct frame *)(blockend))->f_pc;                   \
  79   else if (regno < FPC_REGNUM)                                          \
  80     addr = (int)                                                        \
  81       &((struct user *)0)->u_pcb.pcb_fpregs.fpf_regs[((regno)-FP0_REGNUM)*3];\
  82   else if (regno == FPC_REGNUM)                                         \
  83     addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpcr;        \
  84   else if (regno == FPS_REGNUM)                                         \
  85     addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpsr;        \
  86   else                                                                  \
  87     addr = (int) &((struct user *)0)->u_pcb.pcb_fpregs.fpf_fpiar;       \
  88 }