gdb/config/tahoe/xm-tahoe.h

   1 /* Definitions to make GDB hosted on a tahoe running 4.3-Reno
   2    Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
   3    Contributed by the State University of New York at Buffalo, by the
   4    Distributed Computer Systems Lab, Department of Computer Science, 1991.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 /* Make sure the system include files define BIG_ENDIAN, UINT_MAX, const,
  24    etc, rather than GDB's files.  */
  25 #include <stdio.h>
  26 #include <sys/param.h>
  27
  28 /* Host is big-endian */
  29
  30 #define HOST_BYTE_ORDER BIG_ENDIAN
  31
  32 /* This is the amount to subtract from u.u_ar0
  33    to get the offset in the core file of the register values.  */
  34
  35 #define KERNEL_U_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG))
  36
  37 #define REGISTER_U_ADDR(addr, blockend, regno)          \
  38 { addr = blockend - 100 + regno * 4;                    \
  39   if (regno == PC_REGNUM) addr = blockend - 8;          \
  40   if (regno == PS_REGNUM) addr = blockend - 4;          \
  41   if (regno == FP_REGNUM) addr = blockend - 40;         \
  42   if (regno == SP_REGNUM) addr = blockend - 36;         \
  43   if (regno == AL_REGNUM) addr = blockend - 20;       \
  44   if (regno == AH_REGNUM) addr = blockend - 24;}
  45
  46 /* Interface definitions for kernel debugger KDB.  */
  47
  48 /* Map machine fault codes into signal numbers.
  49    First subtract 0, divide by 4, then index in a table.
  50    Faults for which the entry in this table is 0
  51    are not handled by KDB; the program's own trap handler
  52    gets to handle then.  */
  53
  54 #define FAULT_CODE_ORIGIN 0
  55 #define FAULT_CODE_UNITS 4
  56 #define FAULT_TABLE    \
  57 { 0, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \
  58   0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \
  59   0, 0, 0, 0, 0, 0, 0, 0}
  60
  61 /* Start running with a stack stretching from BEG to END.
  62    BEG and END should be symbols meaningful to the assembler.
  63    This is used only for kdb.  */
  64
  65 #define INIT_STACK(beg, end)  \
  66 { asm (".globl end");         \
  67   asm ("movl $ end, sp");      \
  68   asm ("clrl fp"); }
  69
  70 /* Push the frame pointer register on the stack.  */
  71
  72 #define PUSH_FRAME_PTR        \
  73   asm ("pushl fp");
  74
  75 /* Copy the top-of-stack to the frame pointer register.  */
  76
  77 #define POP_FRAME_PTR  \
  78   asm ("movl (sp), fp");
  79
  80 /* After KDB is entered by a fault, push all registers
  81    that GDB thinks about (all NUM_REGS of them),
  82    so that they appear in order of ascending GDB register number.
  83    The fault code will be on the stack beyond the last register.  */
  84
  85 #define PUSH_REGISTERS        \
  86 { asm ("pushl 8(sp)");        \
  87   asm ("pushl 8(sp)");        \
  88   asm ("pushal 0x41(sp)");    \
  89   asm ("pushl r0" );       \
  90   asm ("pushl r1" );       \
  91   asm ("pushl r2" );       \
  92   asm ("pushl r3" );       \
  93   asm ("pushl r4" );       \
  94   asm ("pushl r5" );       \
  95   asm ("pushl r6" );       \
  96   asm ("pushl r7" );       \
  97   asm ("pushl r8" );       \
  98   asm ("pushl r9" );       \
  99   asm ("pushl r10" );       \
 100   asm ("pushl r11" );       \
 101   asm ("pushl r12" );       \
 102   asm ("pushl fp" );       \
 103   asm ("pushl sp" );       \
 104   asm ("pushl pc" );       \
 105   asm ("pushl ps" );       \
 106   asm ("pushl aclo" );       \
 107   asm ("pushl achi" );       \
 108 }
 109
 110 /* Assuming the registers (including processor status) have been
 111    pushed on the stack in order of ascending GDB register number,
 112    restore them and return to the address in the saved PC register.  */
 113
 114 #define POP_REGISTERS      \
 115 {                          \
 116   asm ("movl (sp)+, achi");   \
 117   asm ("movl (sp)+, aclo");   \
 118   asm ("movl (sp)+, ps");   \
 119   asm ("movl (sp)+, pc");   \
 120   asm ("movl (sp)+, sp");   \
 121   asm ("movl (sp)+, fp");   \
 122   asm ("movl (sp)+, r12");   \
 123   asm ("movl (sp)+, r11");   \
 124   asm ("movl (sp)+, r10");   \
 125   asm ("movl (sp)+, r9");   \
 126   asm ("movl (sp)+, r8");   \
 127   asm ("movl (sp)+, r7");   \
 128   asm ("movl (sp)+, r6");   \
 129   asm ("movl (sp)+, r5");   \
 130   asm ("movl (sp)+, r4");   \
 131   asm ("movl (sp)+, r3");   \
 132   asm ("movl (sp)+, r2");   \
 133   asm ("movl (sp)+, r1");   \
 134   asm ("movl (sp)+, r0");   \
 135   asm ("subl2 $8,(sp)");   \
 136   asm ("movl (sp),sp");    \
 137   asm ("rei"); }