gdb/xm-hp300hpux.h

   1 /* Parameters for execution on an HP 9000 model 320, for GDB, the GNU debugger.
   2    Copyright (C) 1986, 1987, 1989 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* HP/UX is USG, but it does have <ptrace.h>  */
  21 #include <sys/ptrace.h>
  22
  23 #define HOST_BYTE_ORDER BIG_ENDIAN
  24
  25 /* Define this to indicate problems with traps after continuing.  */
  26 #define HP_OS_BUG
  27
  28 /* fetch_inferior_registers is in hp300hpux-dep.c.  */
  29 #define FETCH_INFERIOR_REGISTERS
  30
  31 /* Set flag to indicate whether HP's assembler is in use. */
  32 #ifdef __GNUC__
  33 #ifdef __HPUX_ASM__
  34 #define HPUX_ASM
  35 #endif
  36 #else /* not GNU C.  */
  37 #define HPUX_ASM
  38 #endif /* not GNU C.  */
  39
  40 /* Define this for versions of hp-ux older than 6.0 */
  41 /* #define HPUX_VERSION_5 */
  42
  43 /* define USG if you are using sys5 /usr/include's */
  44 #undef USG      /* In case it was defined in the Makefile for cplus-dem.c */
  45 #define USG
  46
  47 /* The mem functions are in <string.h>.  */
  48 #undef MEM_FNS_DECLARED
  49 #define MEM_FNS_DECLARED 1
  50
  51 #define HAVE_TERMIO
  52
  53 /* Get rid of any system-imposed stack limit if possible.  */
  54 /* The hp9k320.h doesn't seem to have this feature.  */
  55 /* #define SET_STACK_LIMIT_HUGE */
  56 /* So we'll just have to avoid big alloca's.  */
  57 #define BROKEN_LARGE_ALLOCA
  58
  59 /* This is the amount to subtract from u.u_ar0
  60    to get the offset in the core file of the register values.  */
  61
  62 #ifdef HPUX_VERSION_5
  63 #define KERNEL_U_ADDR 0x00979000
  64 #else /* Not HPUX version 5.  */
  65 /* Use HPUX-style nlist() to get kernel_u_addr.  */
  66 #define KERNEL_U_ADDR_HPUX
  67 #endif /* Not HPUX version 5.  */
  68
  69 #define REGISTER_ADDR(u_ar0, regno)                                     \
  70   (unsigned int)                                                        \
  71   (((regno) < PS_REGNUM)                                                \
  72    ? (&((struct exception_stack *) (u_ar0))->e_regs[(regno + R0)])      \
  73    : (((regno) == PS_REGNUM)                                            \
  74       ? ((int *) (&((struct exception_stack *) (u_ar0))->e_PS))         \
  75       : (&((struct exception_stack *) (u_ar0))->e_PC)))
  76
  77 #define FP_REGISTER_ADDR(u, regno)                                      \
  78   (((char *)                                                            \
  79     (((regno) < FPC_REGNUM)                                             \
  80      ? (&u.u_pcb.pcb_mc68881[FMC68881_R0 + (((regno) - FP0_REGNUM) * 3)]) \
  81      : (&u.u_pcb.pcb_mc68881[FMC68881_C + ((regno) - FPC_REGNUM)])))    \
  82    - ((char *) (& u)))
  83 \f
  84 /* Do implement the attach and detach commands.  */
  85
  86 #define ATTACH_DETACH
  87 \f
  88 /* Interface definitions for kernel debugger KDB.  */
  89
  90 /* Map machine fault codes into signal numbers.
  91    First subtract 0, divide by 4, then index in a table.
  92    Faults for which the entry in this table is 0
  93    are not handled by KDB; the program's own trap handler
  94    gets to handle then.  */
  95
  96 #define FAULT_CODE_ORIGIN 0
  97 #define FAULT_CODE_UNITS 4
  98 #define FAULT_TABLE    \
  99 { 0, 0, 0, 0, SIGTRAP, 0, 0, 0, \
 100   0, SIGTRAP, 0, 0, 0, 0, 0, SIGKILL, \
 101   0, 0, 0, 0, 0, 0, 0, 0, \
 102   SIGILL }
 103
 104 #ifndef HPUX_ASM
 105
 106 /* Start running with a stack stretching from BEG to END.
 107    BEG and END should be symbols meaningful to the assembler.
 108    This is used only for kdb.  */
 109
 110 #define INIT_STACK(beg, end)  \
 111 { asm (".globl end");         \
 112   asm ("movel $ end, sp");      \
 113   asm ("clrl fp"); }
 114
 115 /* Push the frame pointer register on the stack.  */
 116 #define PUSH_FRAME_PTR        \
 117   asm ("movel fp, -(sp)");
 118
 119 /* Copy the top-of-stack to the frame pointer register.  */
 120 #define POP_FRAME_PTR  \
 121   asm ("movl (sp), fp");
 122
 123 /* After KDB is entered by a fault, push all registers
 124    that GDB thinks about (all NUM_REGS of them),
 125    so that they appear in order of ascending GDB register number.
 126    The fault code will be on the stack beyond the last register.  */
 127
 128 #define PUSH_REGISTERS        \
 129 { asm ("clrw -(sp)");         \
 130   asm ("pea 10(sp)");         \
 131   asm ("movem $ 0xfffe,-(sp)"); }
 132
 133 /* Assuming the registers (including processor status) have been
 134    pushed on the stack in order of ascending GDB register number,
 135    restore them and return to the address in the saved PC register.  */
 136
 137 #define POP_REGISTERS          \
 138 { asm ("subil $8,28(sp)");     \
 139   asm ("movem (sp),$ 0xffff"); \
 140   asm ("rte"); }
 141
 142 #else /* HPUX_ASM */
 143
 144 /* Start running with a stack stretching from BEG to END.
 145    BEG and END should be symbols meaningful to the assembler.
 146    This is used only for kdb.  */
 147
 148 #define INIT_STACK(beg, end)                                            \
 149 { asm ("global end");                                                   \
 150   asm ("mov.l &end,%sp");                                               \
 151   asm ("clr.l %a6"); }
 152
 153 /* Push the frame pointer register on the stack.  */
 154 #define PUSH_FRAME_PTR                                                  \
 155   asm ("mov.l %fp,-(%sp)");
 156
 157 /* Copy the top-of-stack to the frame pointer register.  */
 158 #define POP_FRAME_PTR                                                   \
 159   asm ("mov.l (%sp),%fp");
 160
 161 /* After KDB is entered by a fault, push all registers
 162    that GDB thinks about (all NUM_REGS of them),
 163    so that they appear in order of ascending GDB register number.
 164    The fault code will be on the stack beyond the last register.  */
 165
 166 #define PUSH_REGISTERS                                                  \
 167 { asm ("clr.w -(%sp)");                                                 \
 168   asm ("pea 10(%sp)");                                                  \
 169   asm ("movm.l &0xfffe,-(%sp)"); }
 170
 171 /* Assuming the registers (including processor status) have been
 172    pushed on the stack in order of ascending GDB register number,
 173    restore them and return to the address in the saved PC register.  */
 174
 175 #define POP_REGISTERS                                                   \
 176 { asm ("subi.l &8,28(%sp)");                                            \
 177   asm ("mov.m (%sp),&0xffff");                                          \
 178   asm ("rte"); }
 179
 180 #endif /* HPUX_ASM */