gdb/config/m68k/xm-hp300hpux.h

   1 /* Parameters for HP 9000 model 320 hosting, for GDB, the GNU debugger.
   2    Copyright (C) 1986, 1987, 1989, 1992 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 #define HOST_BYTE_ORDER BIG_ENDIAN
  22
  23 /* Define this to indicate problems with traps after continuing.  */
  24 #define HP_OS_BUG
  25
  26 /* Set flag to indicate whether HP's assembler is in use. */
  27 #ifdef __GNUC__
  28 #ifdef __HPUX_ASM__
  29 #define HPUX_ASM
  30 #endif
  31 #else /* not GNU C.  */
  32 #define HPUX_ASM
  33 #endif /* not GNU C.  */
  34
  35 /* Define this for versions of hp-ux older than 6.0 */
  36 /* #define HPUX_VERSION_5 */
  37
  38 /* define USG if you are using sys5 /usr/include's */
  39 #undef USG                      /* In case it was defined in the Makefile for cplus-dem.c */
  40 #define USG
  41
  42 #define HAVE_TERMIOS
  43
  44 #define REGISTER_ADDR(u_ar0, regno)                                     \
  45   (unsigned int)                                                        \
  46   (((regno) < PS_REGNUM)                                                \
  47    ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])      \
  48    : (((regno) == PS_REGNUM)                                            \
  49       ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))         \
  50       : (&((struct exception_stack *) (u_ar0))->e_PC)))
  51
  52 #define FP_REGISTER_ADDR(u, regno)                                      \
  53   (((char *)                                                            \
  54     (((regno) < FPC_REGNUM)                                             \
  55      ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
  56      : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))    \
  57    - ((char *) (& u)))
  58 \f
  59 /* Interface definitions for kernel debugger KDB.  */
  60
  61 /* Map machine fault codes into signal numbers.
  62    First subtract 0, divide by 4, then index in a table.
  63    Faults for which the entry in this table is 0
  64    are not handled by KDB; the program's own trap handler
  65    gets to handle then.  */
  66
  67 #define FAULT_CODE_ORIGIN 0
  68 #define FAULT_CODE_UNITS 4
  69 #define FAULT_TABLE    \
  70 { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
  71   0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
  72   0, 0, 0, 0, 0, 0, 0, 0, \
  73   SIGILL }
  74
  75 #ifndef HPUX_ASM
  76
  77 /* Start running with a stack stretching from BEG to END.
  78    BEG and END should be symbols meaningful to the assembler.
  79    This is used only for kdb.  */
  80
  81 #define INIT_STACK(beg, end)  \
  82 { asm (".globl end");         \
  83   asm ("movel $ end, sp");      \
  84   asm ("clrl fp"); }
  85
  86 /* Push the frame pointer register on the stack.  */
  87 #define PUSH_FRAME_PTR        \
  88   asm ("movel fp, -(sp)");
  89
  90 /* Copy the top-of-stack to the frame pointer register.  */
  91 #define POP_FRAME_PTR  \
  92   asm ("movl (sp), fp");
  93
  94 /* After KDB is entered by a fault, push all registers
  95    that GDB thinks about (all NUM_REGS of them),
  96    so that they appear in order of ascending GDB register number.
  97    The fault code will be on the stack beyond the last register.  */
  98
  99 #define PUSH_REGISTERS        \
 100 { asm ("clrw -(sp)");         \
 101   asm ("pea 10(sp)");         \
 102   asm ("movem $ 0xfffe,-(sp)"); }
 103
 104 /* Assuming the registers (including processor status) have been
 105    pushed on the stack in order of ascending GDB register number,
 106    restore them and return to the address in the saved PC register.  */
 107
 108 #define POP_REGISTERS          \
 109 { asm ("subil $8,28(sp)");     \
 110   asm ("movem (sp),$ 0xffff"); \
 111   asm ("rte"); }
 112
 113 #else /* HPUX_ASM */
 114
 115 /* Start running with a stack stretching from BEG to END.
 116    BEG and END should be symbols meaningful to the assembler.
 117    This is used only for kdb.  */
 118
 119 #define INIT_STACK(beg, end)                                            \
 120 { asm ("global end");                                                   \
 121   asm ("mov.l &end,%sp");                                               \
 122   asm ("clr.l %a6"); }
 123
 124 /* Push the frame pointer register on the stack.  */
 125 #define PUSH_FRAME_PTR                                                  \
 126   asm ("mov.l %fp,-(%sp)");
 127
 128 /* Copy the top-of-stack to the frame pointer register.  */
 129 #define POP_FRAME_PTR                                                   \
 130   asm ("mov.l (%sp),%fp");
 131
 132 /* After KDB is entered by a fault, push all registers
 133    that GDB thinks about (all NUM_REGS of them),
 134    so that they appear in order of ascending GDB register number.
 135    The fault code will be on the stack beyond the last register.  */
 136
 137 #define PUSH_REGISTERS                                                  \
 138 { asm ("clr.w -(%sp)");                                                 \
 139   asm ("pea 10(%sp)");                                                  \
 140   asm ("movm.l &0xfffe,-(%sp)"); }
 141
 142 /* Assuming the registers (including processor status) have been
 143    pushed on the stack in order of ascending GDB register number,
 144    restore them and return to the address in the saved PC register.  */
 145
 146 #define POP_REGISTERS                                                   \
 147 { asm ("subi.l &8,28(%sp)");                                            \
 148   asm ("mov.m (%sp),&0xffff");                                          \
 149   asm ("rte"); }
 150
 151 #endif /* HPUX_ASM */