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, Boston, MA 02111-1307, USA.  */
  19
  20 #define HOST_BYTE_ORDER BIG_ENDIAN
  21
  22 /* Define this to indicate problems with traps after continuing.  */
  23 #define HP_OS_BUG
  24
  25 /* Set flag to indicate whether HP's assembler is in use. */
  26 #ifdef __GNUC__
  27 #ifdef __HPUX_ASM__
  28 #define HPUX_ASM
  29 #endif
  30 #else /* not GNU C.  */
  31 #define HPUX_ASM
  32 #endif /* not GNU C.  */
  33
  34 /* Define this for versions of hp-ux older than 6.0 */
  35 /* #define HPUX_VERSION_5 */
  36
  37 /* define USG if you are using sys5 /usr/include's */
  38 #undef USG      /* In case it was defined in the Makefile for cplus-dem.c */
  39 #define USG
  40
  41 #define HAVE_TERMIOS
  42
  43 #define REGISTER_ADDR(u_ar0, regno)                                     \
  44   (unsigned int)                                                        \
  45   (((regno) < PS_REGNUM)                                                \
  46    ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])      \
  47    : (((regno) == PS_REGNUM)                                            \
  48       ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))         \
  49       : (&((struct exception_stack *) (u_ar0))->e_PC)))
  50
  51 #define FP_REGISTER_ADDR(u, regno)                                      \
  52   (((char *)                                                            \
  53     (((regno) < FPC_REGNUM)                                             \
  54      ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
  55      : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))    \
  56    - ((char *) (& u)))
  57 \f
  58 /* Interface definitions for kernel debugger KDB.  */
  59
  60 /* Map machine fault codes into signal numbers.
  61    First subtract 0, divide by 4, then index in a table.
  62    Faults for which the entry in this table is 0
  63    are not handled by KDB; the program's own trap handler
  64    gets to handle then.  */
  65
  66 #define FAULT_CODE_ORIGIN 0
  67 #define FAULT_CODE_UNITS 4
  68 #define FAULT_TABLE    \
  69 { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
  70   0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
  71   0, 0, 0, 0, 0, 0, 0, 0, \
  72   SIGILL }
  73
  74 /* On hpux, autoconf 2.4 (and possibly others) does not properly detect that
  75    mmap is available.  Until this is fixed, we have to explicitly force
  76    HAVE_MMAP.  -fnf */
  77
  78 #define HAVE_MMAP 1
  79
  80 #ifndef HPUX_ASM
  81
  82 /* Start running with a stack stretching from BEG to END.
  83    BEG and END should be symbols meaningful to the assembler.
  84    This is used only for kdb.  */
  85
  86 #define INIT_STACK(beg, end)  \
  87 { asm (".globl end");         \
  88   asm ("movel $ end, sp");      \
  89   asm ("clrl fp"); }
  90
  91 /* Push the frame pointer register on the stack.  */
  92 #define PUSH_FRAME_PTR        \
  93   asm ("movel fp, -(sp)");
  94
  95 /* Copy the top-of-stack to the frame pointer register.  */
  96 #define POP_FRAME_PTR  \
  97   asm ("movl (sp), fp");
  98
  99 /* After KDB is entered by a fault, push all registers
 100    that GDB thinks about (all NUM_REGS of them),
 101    so that they appear in order of ascending GDB register number.
 102    The fault code will be on the stack beyond the last register.  */
 103
 104 #define PUSH_REGISTERS        \
 105 { asm ("clrw -(sp)");         \
 106   asm ("pea 10(sp)");         \
 107   asm ("movem $ 0xfffe,-(sp)"); }
 108
 109 /* Assuming the registers (including processor status) have been
 110    pushed on the stack in order of ascending GDB register number,
 111    restore them and return to the address in the saved PC register.  */
 112
 113 #define POP_REGISTERS          \
 114 { asm ("subil $8,28(sp)");     \
 115   asm ("movem (sp),$ 0xffff"); \
 116   asm ("rte"); }
 117
 118 #else /* HPUX_ASM */
 119
 120 /* Start running with a stack stretching from BEG to END.
 121    BEG and END should be symbols meaningful to the assembler.
 122    This is used only for kdb.  */
 123
 124 #define INIT_STACK(beg, end)                                            \
 125 { asm ("global end");                                                   \
 126   asm ("mov.l &end,%sp");                                               \
 127   asm ("clr.l %a6"); }
 128
 129 /* Push the frame pointer register on the stack.  */
 130 #define PUSH_FRAME_PTR                                                  \
 131   asm ("mov.l %fp,-(%sp)");
 132
 133 /* Copy the top-of-stack to the frame pointer register.  */
 134 #define POP_FRAME_PTR                                                   \
 135   asm ("mov.l (%sp),%fp");
 136
 137 /* After KDB is entered by a fault, push all registers
 138    that GDB thinks about (all NUM_REGS of them),
 139    so that they appear in order of ascending GDB register number.
 140    The fault code will be on the stack beyond the last register.  */
 141
 142 #define PUSH_REGISTERS                                                  \
 143 { asm ("clr.w -(%sp)");                                                 \
 144   asm ("pea 10(%sp)");                                                  \
 145   asm ("movm.l &0xfffe,-(%sp)"); }
 146
 147 /* Assuming the registers (including processor status) have been
 148    pushed on the stack in order of ascending GDB register number,
 149    restore them and return to the address in the saved PC register.  */
 150
 151 #define POP_REGISTERS                                                   \
 152 { asm ("subi.l &8,28(%sp)");                                            \
 153   asm ("mov.m (%sp),&0xffff");                                          \
 154   asm ("rte"); }
 155
 156 #endif /* HPUX_ASM */