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 /* HPUX 8.0, in its infinite wisdom, has chosen to prototype ptrace
  23    with five arguments, so programs written for normal ptrace lose.
  24
  25    Idiots.
  26
  27    (They should have just made it varadic).  */
  28 #define FIVE_ARG_PTRACE
  29
  30 /* Define this to indicate problems with traps after continuing.  */
  31 #define HP_OS_BUG
  32
  33 /* Set flag to indicate whether HP's assembler is in use. */
  34 #ifdef __GNUC__
  35 #ifdef __HPUX_ASM__
  36 #define HPUX_ASM
  37 #endif
  38 #else /* not GNU C.  */
  39 #define HPUX_ASM
  40 #endif /* not GNU C.  */
  41
  42 /* Define this for versions of hp-ux older than 6.0 */
  43 /* #define HPUX_VERSION_5 */
  44
  45 /* define USG if you are using sys5 /usr/include's */
  46 #undef USG      /* In case it was defined in the Makefile for cplus-dem.c */
  47 #define USG
  48
  49 #define HAVE_TERMIOS
  50
  51 #define REGISTER_ADDR(u_ar0, regno)                                     \
  52   (unsigned int)                                                        \
  53   (((regno) < PS_REGNUM)                                                \
  54    ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])      \
  55    : (((regno) == PS_REGNUM)                                            \
  56       ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))         \
  57       : (&((struct exception_stack *) (u_ar0))->e_PC)))
  58
  59 #define FP_REGISTER_ADDR(u, regno)                                      \
  60   (((char *)                                                            \
  61     (((regno) < FPC_REGNUM)                                             \
  62      ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
  63      : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))    \
  64    - ((char *) (& u)))
  65 \f
  66 /* Interface definitions for kernel debugger KDB.  */
  67
  68 /* Map machine fault codes into signal numbers.
  69    First subtract 0, divide by 4, then index in a table.
  70    Faults for which the entry in this table is 0
  71    are not handled by KDB; the program's own trap handler
  72    gets to handle then.  */
  73
  74 #define FAULT_CODE_ORIGIN 0
  75 #define FAULT_CODE_UNITS 4
  76 #define FAULT_TABLE    \
  77 { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
  78   0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
  79   0, 0, 0, 0, 0, 0, 0, 0, \
  80   SIGILL }
  81
  82 /* If you expect to use the mmalloc package to obtain mapped symbol files,
  83    for now you have to specify some parameters that determine how gdb places
  84    the mappings in it's address space.  See the comments in map_to_address()
  85    for details.  This is expected to only be a short term solution.  Yes it
  86    is a kludge.
  87    FIXME:  Make this more automatic. */
  88
  89 #define MMAP_BASE_ADDRESS       0xA0000000      /* First mapping here */
  90 #define MMAP_INCREMENT          0x01000000      /* Increment to next mapping */
  91
  92 /* On hpux, autoconf 2.4 (and possibly others) does not properly detect that
  93    mmap is available.  Until this is fixed, we have to explicitly force
  94    HAVE_MMAP.  -fnf */
  95
  96 #define HAVE_MMAP 1
  97
  98 #ifndef HPUX_ASM
  99
 100 /* Start running with a stack stretching from BEG to END.
 101    BEG and END should be symbols meaningful to the assembler.
 102    This is used only for kdb.  */
 103
 104 #define INIT_STACK(beg, end)  \
 105 { asm (".globl end");         \
 106   asm ("movel $ end, sp");      \
 107   asm ("clrl fp"); }
 108
 109 /* Push the frame pointer register on the stack.  */
 110 #define PUSH_FRAME_PTR        \
 111   asm ("movel fp, -(sp)");
 112
 113 /* Copy the top-of-stack to the frame pointer register.  */
 114 #define POP_FRAME_PTR  \
 115   asm ("movl (sp), fp");
 116
 117 /* After KDB is entered by a fault, push all registers
 118    that GDB thinks about (all NUM_REGS of them),
 119    so that they appear in order of ascending GDB register number.
 120    The fault code will be on the stack beyond the last register.  */
 121
 122 #define PUSH_REGISTERS        \
 123 { asm ("clrw -(sp)");         \
 124   asm ("pea 10(sp)");         \
 125   asm ("movem $ 0xfffe,-(sp)"); }
 126
 127 /* Assuming the registers (including processor status) have been
 128    pushed on the stack in order of ascending GDB register number,
 129    restore them and return to the address in the saved PC register.  */
 130
 131 #define POP_REGISTERS          \
 132 { asm ("subil $8,28(sp)");     \
 133   asm ("movem (sp),$ 0xffff"); \
 134   asm ("rte"); }
 135
 136 #else /* HPUX_ASM */
 137
 138 /* Start running with a stack stretching from BEG to END.
 139    BEG and END should be symbols meaningful to the assembler.
 140    This is used only for kdb.  */
 141
 142 #define INIT_STACK(beg, end)                                            \
 143 { asm ("global end");                                                   \
 144   asm ("mov.l &end,%sp");                                               \
 145   asm ("clr.l %a6"); }
 146
 147 /* Push the frame pointer register on the stack.  */
 148 #define PUSH_FRAME_PTR                                                  \
 149   asm ("mov.l %fp,-(%sp)");
 150
 151 /* Copy the top-of-stack to the frame pointer register.  */
 152 #define POP_FRAME_PTR                                                   \
 153   asm ("mov.l (%sp),%fp");
 154
 155 /* After KDB is entered by a fault, push all registers
 156    that GDB thinks about (all NUM_REGS of them),
 157    so that they appear in order of ascending GDB register number.
 158    The fault code will be on the stack beyond the last register.  */
 159
 160 #define PUSH_REGISTERS                                                  \
 161 { asm ("clr.w -(%sp)");                                                 \
 162   asm ("pea 10(%sp)");                                                  \
 163   asm ("movm.l &0xfffe,-(%sp)"); }
 164
 165 /* Assuming the registers (including processor status) have been
 166    pushed on the stack in order of ascending GDB register number,
 167    restore them and return to the address in the saved PC register.  */
 168
 169 #define POP_REGISTERS                                                   \
 170 { asm ("subi.l &8,28(%sp)");                                            \
 171   asm ("mov.m (%sp),&0xffff");                                          \
 172   asm ("rte"); }
 173
 174 #endif /* HPUX_ASM */