gdb/config/i386/tm-ptx.h

   1 /* Target machine definitions for GDB on a Sequent Symmetry under ptx
   2    with Weitek 1167 and i387 support.
   3    Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 2000
   4    Free Software Foundation, Inc.
   5    Symmetry version by Jay Vosburgh (fubar@sequent.com).
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef TM_PTX_H
  25 #define TM_PTX_H 1
  26
  27 /* I don't know if this will work for cross-debugging, even if you do get
  28    a copy of the right include file.  */
  29
  30 #include <sys/reg.h>
  31
  32 #ifdef SEQUENT_PTX4
  33 #include "i386/tm-i386.h"
  34 #else /* !SEQUENT_PTX4 */
  35 #include "i386/tm-i386.h"
  36 #endif
  37
  38 /* Amount PC must be decremented by after a breakpoint.  This is often the
  39    number of bytes in BREAKPOINT but not always (such as now). */
  40
  41 #undef DECR_PC_AFTER_BREAK
  42 #define DECR_PC_AFTER_BREAK 0
  43
  44 #if 0
  45 -- -this code can 't be used unless we know we are running native,
  46 since it uses host specific ptrace calls.
  47 /* code for 80387 fpu.  Functions are from i386-dep.c, copied into
  48  * symm-dep.c.
  49  */
  50 #define FLOAT_INFO { i386_float_info(); }
  51 #endif
  52
  53 /* Number of machine registers */
  54
  55 #undef  NUM_REGS
  56 #define NUM_REGS 49
  57
  58 /* Initializer for an array of names of registers.  There should be at least
  59    NUM_REGS strings in this initializer.  Any excess ones are simply ignored.
  60    The order of the first 8 registers must match the compiler's numbering
  61    scheme (which is the same as the 386 scheme) and also regmap in the various
  62    *-nat.c files. */
  63
  64 #undef REGISTER_NAME
  65 #define REGISTER_NAMES { "eax",  "ecx",    "edx",  "ebx",  \
  66                          "esp",  "ebp",    "esi",  "edi",  \
  67                          "eip",  "eflags", "st0",  "st1",  \
  68                          "st2",  "st3",    "st4",  "st5",  \
  69                          "st6",  "st7",    "fp1",  "fp2",  \
  70                          "fp3",  "fp4",    "fp5",  "fp6",  \
  71                          "fp7",  "fp8",    "fp9",  "fp10", \
  72                          "fp11", "fp12",   "fp13", "fp14", \
  73                          "fp15", "fp16",   "fp17", "fp18", \
  74                          "fp19", "fp20",   "fp21", "fp22", \
  75                          "fp23", "fp24",   "fp25", "fp26", \
  76                          "fp27", "fp28",   "fp29", "fp30", \
  77                          "fp31" }
  78
  79 /* Register numbers of various important registers.
  80    Note that some of these values are "real" register numbers,
  81    and correspond to the general registers of the machine,
  82    and some are "phony" register numbers which are too large
  83    to be actual register numbers as far as the user is concerned
  84    but do serve to get the desired values when passed to read_register.  */
  85
  86 #define EAX_REGNUM      0
  87 #define ECX_REGNUM      1
  88 #define EDX_REGNUM      2
  89 #define EBX_REGNUM      3
  90
  91 #define ESP_REGNUM      4
  92 #define EBP_REGNUM      5
  93
  94 #define ESI_REGNUM      6
  95 #define EDI_REGNUM      7
  96
  97 #define EIP_REGNUM      8
  98 #define EFLAGS_REGNUM   9
  99
 100 #define ST0_REGNUM      10
 101 #define ST1_REGNUM      11
 102 #define ST2_REGNUM      12
 103 #define ST3_REGNUM      13
 104
 105 #define ST4_REGNUM      14
 106 #define ST5_REGNUM      15
 107 #define ST6_REGNUM      16
 108 #define ST7_REGNUM      17
 109
 110 #define FP1_REGNUM 18           /* first 1167 register */
 111 /* Get %fp2 - %fp31 by addition, since they are contiguous */
 112
 113 #undef  SP_REGNUM
 114 #define SP_REGNUM ESP_REGNUM    /* Contains address of top of stack */
 115 #undef  FP_REGNUM
 116 #define FP_REGNUM EBP_REGNUM    /* Contains address of executing stack frame */
 117 #undef  PC_REGNUM
 118 #define PC_REGNUM EIP_REGNUM    /* Contains program counter */
 119 #undef  PS_REGNUM
 120 #define PS_REGNUM EFLAGS_REGNUM /* Contains processor status */
 121
 122 /*
 123  * For ptx, this is a little bit bizarre, since the register block
 124  * is below the u area in memory.  This means that blockend here ends
 125  * up being negative (for the call from coredep.c) since the value in
 126  * u.u_ar0 will be less than KERNEL_U_ADDR (and coredep.c passes us
 127  * u.u_ar0 - KERNEL_U_ADDR in blockend).  Since we also define
 128  * FETCH_INFERIOR_REGISTERS (and supply our own functions for that),
 129  * the core file case will be the only use of this function.
 130  */
 131
 132 #define REGISTER_U_ADDR(addr, blockend, regno) \
 133 { (addr) = ptx_register_u_addr((blockend), (regno)); }
 134
 135 extern int ptx_register_u_addr (int, int);
 136
 137 /* Total amount of space needed to store our copies of the machine's
 138    register state, the array `registers'.  10 i*86 registers, 8 i387
 139    registers, and 31 Weitek 1167 registers */
 140
 141 #undef  REGISTER_BYTES
 142 #define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
 143
 144 /* Largest value REGISTER_RAW_SIZE can have.  */
 145
 146 #undef  MAX_REGISTER_RAW_SIZE
 147 #define MAX_REGISTER_RAW_SIZE 10
 148
 149 /* Nonzero if register N requires conversion
 150    from raw format to virtual format.  */
 151
 152 #undef REGISTER_CONVERTIBLE
 153 #define REGISTER_CONVERTIBLE(N) \
 154 ((N < ST0_REGNUM) ? 0 : \
 155  (N < FP1_REGNUM) ? 1 : \
 156  0)
 157
 158 /* Convert data from raw format for register REGNUM
 159    to virtual format for register REGNUM.  */
 160 extern const struct floatformat floatformat_i387_ext;   /* from floatformat.h */
 161
 162 #undef REGISTER_CONVERT_TO_VIRTUAL
 163 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO)        \
 164 ((REGNUM < ST0_REGNUM) ?  (void)memcpy ((TO), (FROM), 4) : \
 165  (REGNUM < FP1_REGNUM) ? (void)floatformat_to_double(&floatformat_i387_ext, \
 166                                                        (FROM),(TO)) : \
 167  (void)memcpy ((TO), (FROM), 4))
 168
 169 /* Convert data from virtual format for register REGNUM
 170    to raw format for register REGNUM.  */
 171
 172 #undef REGISTER_CONVERT_TO_RAW
 173 #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO)    \
 174 ((REGNUM < ST0_REGNUM) ?  (void)memcpy ((TO), (FROM), 4) : \
 175  (REGNUM < FP1_REGNUM) ? (void)floatformat_from_double(&floatformat_i387_ext, \
 176                                                        (FROM),(TO)) : \
 177  (void)memcpy ((TO), (FROM), 4))
 178
 179 /* Return the GDB type object for the "standard" data type
 180    of data in register N.  */
 181 /*
 182  * Note: the 1167 registers (the last line, builtin_type_float) are
 183  * generally used in pairs, with each pair being treated as a double.
 184  * It it also possible to use them singly as floats.  I'm not sure how
 185  * in gdb to treat the register pair pseudo-doubles. -fubar
 186  */
 187 #undef REGISTER_VIRTUAL_TYPE
 188 #define REGISTER_VIRTUAL_TYPE(N) \
 189 ((N < ST0_REGNUM) ? builtin_type_int : \
 190  (N < FP1_REGNUM) ? builtin_type_double : \
 191  builtin_type_float)
 192
 193 /* Extract from an array REGBUF containing the (raw) register state
 194    a function return value of type TYPE, and copy that, in virtual format,
 195    into VALBUF.  */
 196
 197 #undef  DEPRECATED_EXTRACT_RETURN_VALUE
 198 #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 199   symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
 200
 201 /*
 202    #undef  FRAME_FIND_SAVED_REGS
 203    #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
 204    { ptx_frame_find_saved_regs((frame_info), &(frame_saved_regs)); }
 205  */
 206
 207 #endif /* ifndef TM_PTX_H */