gdb/config/a29k/tm-ultra3.h

   1 /* Parameters for NYU Ultracomputer 29000 target, for GDB, the GNU debugger.
   2    Copyright 1990, 1991 Free Software Foundation, Inc.
   3    Contributed by David Wood @ New York University (wood@nyu.edu).
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* This file includes tm-a29k.h, but predefines REGISTER_NAMES and
  22    related macros.  The file supports a a29k running our flavor of
  23    Unix on our Ultra3 PE Boards.  */
  24
  25 /* Byte order is configurable, but this machine runs big-endian.  */
  26 #define TARGET_BYTE_ORDER BIG_ENDIAN
  27
  28 /* Initializer for an array of names of registers.
  29    There should be NUM_REGS strings in this initializer.
  30  */
  31 #define NUM_REGS   (EXO_REGNUM + 1)
  32
  33 #define REGISTER_NAMES {                                                 \
  34  "gr1",                                                                  \
  35  "gr64", "gr65", "gr66", "gr67", "gr68", "gr69", "gr70", "gr71", "gr72", \
  36  "gr73", "gr74", "gr75", "gr76", "gr77", "gr78", "gr79", "gr80", "gr81", \
  37  "gr82", "gr83", "gr84", "gr85", "gr86", "gr87", "gr88", "gr89", "gr90", \
  38  "gr91", "gr92", "gr93", "gr94", "gr95",                                 \
  39  "gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \
  40  "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \
  41  "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \
  42  "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127",          \
  43  "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9",   \
  44  "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \
  45  "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \
  46  "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \
  47  "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \
  48  "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \
  49  "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \
  50  "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \
  51  "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \
  52  "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \
  53  "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \
  54  "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \
  55  "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \
  56  "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \
  57  "lr124", "lr125", "lr126", "lr127",                                     \
  58  "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr",   \
  59  "pc0", "pc1", "pc2", "mmu", "lru",                                      \
  60  "ipc", "ipa", "ipb", "q", "alu", "bp", "fc", "cr",                      \
  61  "fpe", "int", "fps", "exo" }
  62
  63
  64 #ifdef KERNEL_DEBUGGING
  65 # define        PADDR_U_REGNUM  22              /* gr86 */
  66 # define        RETURN_REGNUM   GR64_REGNUM
  67 #else
  68 # define        RETURN_REGNUM   GR96_REGNUM
  69 #endif  /* KERNEL_DEBUGGING */
  70
  71
  72 /* Should rename all GR96_REGNUM to RETURN_REGNUM */
  73 #define GR1_REGNUM      (0)
  74 #define GR64_REGNUM     1
  75 #define GR96_REGNUM     (GR64_REGNUM + 32)
  76 /* This needs to be the memory stack pointer, not the register stack pointer,
  77    to make call_function work right.  */
  78 #define SP_REGNUM       MSP_REGNUM
  79
  80 #define FP_REGNUM       (LR0_REGNUM + 1)        /* lr1 */
  81 /* Large Return Pointer  */
  82 #define LRP_REGNUM (123 - 96 + RETURN_REGNUM)
  83 /* Static link pointer   */
  84 #define SLP_REGNUM (124 - 96 + RETURN_REGNUM)
  85 /* Memory Stack Pointer.  */
  86 #define MSP_REGNUM (125 - 96 + RETURN_REGNUM)
  87 /* Register allocate bound.  */
  88 #define RAB_REGNUM (126 - 96 + RETURN_REGNUM)
  89 /* Register Free Bound.  */
  90 #define RFB_REGNUM (127 - 96 + RETURN_REGNUM)
  91 /* Register Stack Pointer.  */
  92 #define RSP_REGNUM GR1_REGNUM
  93 #define LR0_REGNUM ( 32 +  GR96_REGNUM)
  94
  95 /* Protected Special registers */
  96 #define VAB_REGNUM (LR0_REGNUM +  128)
  97 #define OPS_REGNUM (VAB_REGNUM + 1)
  98 #define CPS_REGNUM (VAB_REGNUM + 2)
  99 #define CFG_REGNUM (VAB_REGNUM + 3)
 100 #define CHA_REGNUM (VAB_REGNUM + 4)
 101 #define CHD_REGNUM (VAB_REGNUM + 5)
 102 #define CHC_REGNUM (VAB_REGNUM + 6)
 103 #define RBP_REGNUM (VAB_REGNUM + 7)
 104 #define TMC_REGNUM (VAB_REGNUM + 8)
 105 #define TMR_REGNUM (VAB_REGNUM + 9)
 106 #define NPC_REGNUM (VAB_REGNUM + 10)    /* pc0 */
 107 #define PC_REGNUM  (VAB_REGNUM + 11)    /* pc1 */
 108 #define PC2_REGNUM (VAB_REGNUM + 12)    /* pc2 */
 109 #define MMU_REGNUM (VAB_REGNUM + 13)
 110 #define LRU_REGNUM (VAB_REGNUM + 14)
 111         /* Register sequence gap */
 112 /* Unprotected Special registers */
 113 #define IPC_REGNUM (LRU_REGNUM + 1)
 114 #define IPA_REGNUM (IPC_REGNUM + 1)
 115 #define IPB_REGNUM (IPC_REGNUM + 2)
 116 #define Q_REGNUM   (IPC_REGNUM + 3)
 117 #define ALU_REGNUM (IPC_REGNUM + 4)
 118 #define PS_REGNUM  ALU_REGNUM
 119 #define BP_REGNUM  (IPC_REGNUM + 5)
 120 #define FC_REGNUM  (IPC_REGNUM + 6)
 121 #define CR_REGNUM  (IPC_REGNUM + 7)
 122         /* Register sequence gap */
 123 #define FPE_REGNUM (CR_REGNUM  + 1)
 124 #define INT_REGNUM (FPE_REGNUM + 1)
 125 #define FPS_REGNUM (FPE_REGNUM + 2)
 126         /* Register sequence gap */
 127 #define EXO_REGNUM (FPS_REGNUM + 1)
 128
 129 /* Special register #x.  */
 130 #define SR_REGNUM(x) \
 131   ((x) < 15  ? VAB_REGNUM + (x)                                  \
 132    : (x) >= 128 && (x) < 136 ? IPC_REGNUM + (x-128)              \
 133    : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x-160)              \
 134    : (x) == 164 ? EXO_REGNUM                                     \
 135    : (error ("Internal error in SR_REGNUM"), 0))
 136
 137 #ifndef KERNEL_DEBUGGING
 138 /*
 139  * This macro defines the register numbers (from REGISTER_NAMES) that
 140  * are effectively unavailable to the user through ptrace().  It allows
 141  * us to include the whole register set in REGISTER_NAMES (inorder to
 142  * better support remote debugging).  If it is used in
 143  * fetch/store_inferior_registers() gdb will not complain about I/O errors
 144  * on fetching these registers.  If all registers in REGISTER_NAMES
 145  * are available, then return false (0).
 146  */
 147 #define CANNOT_STORE_REGISTER(regno)            \
 148                   (((regno)>=GR64_REGNUM && (regno)<GR64_REGNUM+32) ||  \
 149                    ((regno)==VAB_REGNUM) ||     \
 150                    ((regno)==OPS_REGNUM) ||     \
 151                    ((regno)>=CFG_REGNUM && (regno)<=TMR_REGNUM)     ||  \
 152                    ((regno)==MMU_REGNUM) ||     \
 153                    ((regno)==LRU_REGNUM) ||     \
 154                    ((regno)>=ALU_REGNUM) ||     \
 155                    ((regno)==CR_REGNUM)  ||     \
 156                    ((regno)==EXO_REGNUM))
 157 #define CANNOT_FETCH_REGISTER(regno)    CANNOT_STORE_REGISTER(regno)
 158 #endif /* KERNEL_DEBUGGING */
 159
 160 /*
 161  * Converts an sdb register number to an internal gdb register number.
 162  * Currently under gcc, gr96->0...gr128->31...lr0->32...lr127->159, or...
 163  *                      gr64->0...gr95->31, lr0->32...lr127->159.
 164  */
 165 #define SDB_REG_TO_REGNUM(value) (((value)<32) ? ((value)+RETURN_REGNUM) : \
 166                                                  ((value)-32+LR0_REGNUM))
 167
 168 #ifdef KERNEL_DEBUGGING
 169   /* ublock virtual address as defined in our sys/param.h */
 170   /* FIXME: Should get this from sys/param.h */
 171 # define UVADDR ((32*0x100000)-8192)
 172 #endif
 173
 174 /*
 175  * Are we in sigtramp(), needed in infrun.c.  Specific to ultra3, because
 176  * we take off the leading '_'.
 177  */
 178 #if !defined(KERNEL_DEBUGGING)
 179 #ifdef SYM1
 180 # define IN_SIGTRAMP(pc, name) (name && STREQ ("sigtramp", name))
 181 #else
 182         Need to define IN_SIGTRAMP() for sym2.
 183 #endif
 184 #endif /* !KERNEL_DEBUGGING */
 185
 186 #include "a29k/tm-a29k.h"
 187
 188 /**** The following are definitions that override those in tm-a29k.h ****/
 189
 190 /* This sequence of words is the instructions
 191    mtsrim cr, 15
 192    loadm 0, 0, lr2, msp     ; load first 16 words of arguments into registers
 193    add msp, msp, 16 * 4     ; point to the remaining arguments
 194   CONST_INSN:
 195    const gr96,inf
 196    consth gr96,inf
 197    calli lr0, gr96
 198    aseq 0x40,gr1,gr1   ; nop
 199    asneq 0x50,gr1,gr1  ; breakpoint
 200    When KERNEL_DEBUGGIN is defined, msp -> gr93, gr96 -> gr64,
 201                                     7d  -> 5d,    60  -> 40
 202    */
 203
 204 /* Position of the "const" instruction within CALL_DUMMY in bytes.  */
 205 #undef CALL_DUMMY
 206 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
 207 #ifdef KERNEL_DEBUGGING /* gr96 -> gr64 */
 208 #  define CALL_DUMMY {0x0400870f, 0x3600825d, 0x155d5d40, 0x03ff40ff,    \
 209                     0x02ff40ff, 0xc8008040, 0x70400101, 0x72500101}
 210 #else
 211 #  define CALL_DUMMY {0x0400870f, 0x3600827d, 0x157d7d40, 0x03ff60ff,    \
 212                     0x02ff60ff, 0xc8008060, 0x70400101, 0x72500101}
 213 #endif /* KERNEL_DEBUGGING */
 214 #else /* Byte order differs.  */
 215   you lose
 216 #endif /* Byte order differs.  */
 217
 218 #if !defined(KERNEL_DEBUGGING)
 219 # ifdef SYM1
 220 #  undef  DECR_PC_AFTER_BREAK
 221 #  define DECR_PC_AFTER_BREAK 0 /* Sym1 kernel does the decrement */
 222 # else
 223     ->"ULTRA3 running other than sym1 OS"!;
 224 # endif
 225 #endif /* !KERNEL_DEBUGGING */
 226