gdb/config/pa/tm-hppah.h

   1 /* Parameters for execution on an HP PA-RISC machine, running HPUX, for GDB.
   2    Copyright 1991, 1992 Free Software Foundation, Inc.
   3
   4    Contributed by the Center for Software Science at the
   5    University of Utah (pa-gdb-bugs@cs.utah.edu).
   6
   7 This file is part of GDB.
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 #define HPUX_SNAP1
  24 #define HPUX_SNAP2
  25
  26 #include "somsolib.h"
  27
  28 /* Actually, for a PA running HPUX the kernel calls the signal handler
  29    without an intermediate trampoline.  Luckily the kernel always sets
  30    the return pointer for the signal handler to point to _sigreturn.  */
  31 #define IN_SIGTRAMP(pc, name) (name && STREQ ("_sigreturn", name))
  32
  33 /* For HPUX:
  34
  35    The signal context structure pointer is always saved at the base
  36    of the frame which "calls" the signal handler.  We only want to find
  37    the hardware save state structure, which lives 10 32bit words into
  38    sigcontext structure.
  39
  40    Within the hardware save state structure, registers are found in the
  41    same order as the register numbers in GDB.
  42
  43    At one time we peeked at %r31 rather than the PC queues to determine
  44    what instruction took the fault.  This was done on purpose, but I don't
  45    remember why.  Looking at the PC queues is really the right way, and
  46    I don't remember why that didn't work when this code was originally
  47    written.  */
  48
  49 #define FRAME_SAVED_PC_IN_SIGTRAMP(FRAME, TMP) \
  50 { \
  51   *(TMP) = read_memory_integer ((FRAME)->frame + (43 * 4) , 4); \
  52 }
  53
  54 #define FRAME_BASE_BEFORE_SIGTRAMP(FRAME, TMP) \
  55 { \
  56   *(TMP) = read_memory_integer ((FRAME)->frame + (40 * 4), 4); \
  57 }
  58
  59 #define FRAME_FIND_SAVED_REGS_IN_SIGTRAMP(FRAME, FSR) \
  60 { \
  61   int i; \
  62   CORE_ADDR TMP; \
  63   TMP = (FRAME)->frame + (10 * 4); \
  64   for (i = 0; i < NUM_REGS; i++) \
  65     { \
  66       if (i == SP_REGNUM) \
  67         (FSR)->regs[SP_REGNUM] = read_memory_integer (TMP + SP_REGNUM * 4, 4); \
  68       else \
  69         (FSR)->regs[i] = TMP + i * 4; \
  70     } \
  71 }
  72
  73 /* For HP-UX on PA-RISC we have an implementation
  74    for the exception handling target op (in hppa-tdep.c) */
  75 #define CHILD_ENABLE_EXCEPTION_CALLBACK
  76 #define CHILD_GET_CURRENT_EXCEPTION_EVENT
  77
  78 /* Mostly it's common to all HPPA's.  */
  79 #include "pa/tm-hppa.h"