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,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 /* This file includes tm-a29k.h, but predefines REGISTER_NAMES and
  23    related macros.  The file supports a a29k running our flavor of
  24    Unix on our Ultra3 PE Boards.  */
  25
  26 /* Byte order is configurable, but this machine runs big-endian.  */
  27 #define TARGET_BYTE_ORDER BIG_ENDIAN
  28
  29 /* Initializer for an array of names of registers.
  30    There should be NUM_REGS strings in this initializer.
  31  */
  32 #define NUM_REGS   (EXO_REGNUM + 1)
  33
  34 #define REGISTER_NAMES {                                                 \
  35  "gr1",                                                                  \
  36  "gr64", "gr65", "gr66", "gr67", "gr68", "gr69", "gr70", "gr71", "gr72", \
  37  "gr73", "gr74", "gr75", "gr76", "gr77", "gr78", "gr79", "gr80", "gr81", \
  38  "gr82", "gr83", "gr84", "gr85", "gr86", "gr87", "gr88", "gr89", "gr90", \
  39  "gr91", "gr92", "gr93", "gr94", "gr95",                                 \
  40  "gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \
  41  "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \
  42  "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \
  43  "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127",          \
  44  "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9",   \
  45  "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \
  46  "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \
  47  "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \
  48  "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \
  49  "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \
  50  "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \
  51  "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \
  52  "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \
  53  "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \
  54  "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \
  55  "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \
  56  "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \
  57  "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \
  58  "lr124", "lr125", "lr126", "lr127",                                     \
  59  "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr",   \
  60  "pc0", "pc1", "pc2", "mmu", "lru",                                      \
  61  "ipc", "ipa", "ipb", "q", "alu", "bp", "fc", "cr",                      \
  62  "fpe", "int", "fps", "exo" }
  63
  64
  65 #ifdef KERNEL_DEBUGGING
  66 #define PADDR_U_REGNUM  22      /* gr86 */
  67 #define RETURN_REGNUM   GR64_REGNUM
  68 #else
  69 #define RETURN_REGNUM   GR96_REGNUM
  70 #endif /* KERNEL_DEBUGGING */
  71
  72
  73 /* Should rename all GR96_REGNUM to RETURN_REGNUM */
  74 #define GR1_REGNUM      (0)
  75 #define GR64_REGNUM     1
  76 #define GR96_REGNUM     (GR64_REGNUM + 32)
  77 /* This needs to be the memory stack pointer, not the register stack pointer,
  78    to make call_function work right.  */
  79 #define SP_REGNUM       MSP_REGNUM
  80
  81 #define FP_REGNUM       (LR0_REGNUM + 1)        /* lr1 */
  82 /* Large Return Pointer  */
  83 #define LRP_REGNUM (123 - 96 + RETURN_REGNUM)
  84 /* Static link pointer   */
  85 #define SLP_REGNUM (124 - 96 + RETURN_REGNUM)
  86 /* Memory Stack Pointer.  */
  87 #define MSP_REGNUM (125 - 96 + RETURN_REGNUM)
  88 /* Register allocate bound.  */
  89 #define RAB_REGNUM (126 - 96 + RETURN_REGNUM)
  90 /* Register Free Bound.  */
  91 #define RFB_REGNUM (127 - 96 + RETURN_REGNUM)
  92 /* Register Stack Pointer.  */
  93 #define RSP_REGNUM GR1_REGNUM
  94 #define LR0_REGNUM ( 32 +  GR96_REGNUM)
  95
  96 /* Protected Special registers */
  97 #define VAB_REGNUM (LR0_REGNUM +  128)
  98 #define OPS_REGNUM (VAB_REGNUM + 1)
  99 #define CPS_REGNUM (VAB_REGNUM + 2)
 100 #define CFG_REGNUM (VAB_REGNUM + 3)
 101 #define CHA_REGNUM (VAB_REGNUM + 4)
 102 #define CHD_REGNUM (VAB_REGNUM + 5)
 103 #define CHC_REGNUM (VAB_REGNUM + 6)
 104 #define RBP_REGNUM (VAB_REGNUM + 7)
 105 #define TMC_REGNUM (VAB_REGNUM + 8)
 106 #define TMR_REGNUM (VAB_REGNUM + 9)
 107 #define NPC_REGNUM (VAB_REGNUM + 10)    /* pc0 */
 108 #define PC_REGNUM  (VAB_REGNUM + 11)    /* pc1 */
 109 #define PC2_REGNUM (VAB_REGNUM + 12)    /* pc2 */
 110 #define MMU_REGNUM (VAB_REGNUM + 13)
 111 #define LRU_REGNUM (VAB_REGNUM + 14)
 112         /* Register sequence gap */
 113 /* Unprotected Special registers */
 114 #define IPC_REGNUM (LRU_REGNUM + 1)
 115 #define IPA_REGNUM (IPC_REGNUM + 1)
 116 #define IPB_REGNUM (IPC_REGNUM + 2)
 117 #define Q_REGNUM   (IPC_REGNUM + 3)
 118 #define ALU_REGNUM (IPC_REGNUM + 4)
 119 #define PS_REGNUM  ALU_REGNUM
 120 #define BP_REGNUM  (IPC_REGNUM + 5)
 121 #define FC_REGNUM  (IPC_REGNUM + 6)
 122 #define CR_REGNUM  (IPC_REGNUM + 7)
 123         /* Register sequence gap */
 124 #define FPE_REGNUM (CR_REGNUM  + 1)
 125 #define INT_REGNUM (FPE_REGNUM + 1)
 126 #define FPS_REGNUM (FPE_REGNUM + 2)
 127         /* Register sequence gap */
 128 #define EXO_REGNUM (FPS_REGNUM + 1)
 129
 130 /* Special register #x.  */
 131 #define SR_REGNUM(x) \
 132   ((x) < 15  ? VAB_REGNUM + (x)                                  \
 133    : (x) >= 128 && (x) < 136 ? IPC_REGNUM + (x-128)              \
 134    : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x-160)              \
 135    : (x) == 164 ? EXO_REGNUM                                     \
 136    : (error ("Internal error in SR_REGNUM"), 0))
 137
 138 #ifndef KERNEL_DEBUGGING
 139 /*
 140  * This macro defines the register numbers (from REGISTER_NAMES) that
 141  * are effectively unavailable to the user through ptrace().  It allows
 142  * us to include the whole register set in REGISTER_NAMES (inorder to
 143  * better support remote debugging).  If it is used in
 144  * fetch/store_inferior_registers() gdb will not complain about I/O errors
 145  * on fetching these registers.  If all registers in REGISTER_NAMES
 146  * are available, then return false (0).
 147  */
 148 #define CANNOT_STORE_REGISTER(regno)            \
 149                   (((regno)>=GR64_REGNUM && (regno)<GR64_REGNUM+32) ||  \
 150                    ((regno)==VAB_REGNUM) ||     \
 151                    ((regno)==OPS_REGNUM) ||     \
 152                    ((regno)>=CFG_REGNUM && (regno)<=TMR_REGNUM)     ||  \
 153                    ((regno)==MMU_REGNUM) ||     \
 154                    ((regno)==LRU_REGNUM) ||     \
 155                    ((regno)>=ALU_REGNUM) ||     \
 156                    ((regno)==CR_REGNUM)  ||     \
 157                    ((regno)==EXO_REGNUM))
 158 #define CANNOT_FETCH_REGISTER(regno)    CANNOT_STORE_REGISTER(regno)
 159 #endif /* KERNEL_DEBUGGING */
 160
 161 /*
 162  * Converts an sdb register number to an internal gdb register number.
 163  * Currently under gcc, gr96->0...gr128->31...lr0->32...lr127->159, or...
 164  *                      gr64->0...gr95->31, lr0->32...lr127->159.
 165  */
 166 #define SDB_REG_TO_REGNUM(value) (((value)<32) ? ((value)+RETURN_REGNUM) : \
 167                                                  ((value)-32+LR0_REGNUM))
 168
 169 #ifdef KERNEL_DEBUGGING
 170   /* ublock virtual address as defined in our sys/param.h */
 171   /* FIXME: Should get this from sys/param.h */
 172 #define UVADDR  ((32*0x100000)-8192)
 173 #endif
 174
 175 /*
 176  * Are we in sigtramp(), needed in infrun.c.  Specific to ultra3, because
 177  * we take off the leading '_'.
 178  */
 179 #if !defined(KERNEL_DEBUGGING)
 180 #ifdef SYM1
 181 #define IN_SIGTRAMP(pc, name) (name && STREQ ("sigtramp", name))
 182 #else
 183 Need to define
 184 IN_SIGTRAMP () for sym2.
 185 #endif
 186 #endif                          /* !KERNEL_DEBUGGING */
 187
 188 #include "a29k/tm-a29k.h"
 189
 190 /**** The following are definitions that override those in tm-a29k.h ****/
 191
 192 /* This sequence of words is the instructions
 193    mtsrim cr, 15
 194    loadm 0, 0, lr2, msp     ; load first 16 words of arguments into registers
 195    add msp, msp, 16 * 4     ; point to the remaining arguments
 196    CONST_INSN:
 197    const gr96,inf
 198    consth gr96,inf
 199    calli lr0, gr96
 200    aseq 0x40,gr1,gr1   ; nop
 201    asneq 0x50,gr1,gr1  ; breakpoint
 202    When KERNEL_DEBUGGIN is defined, msp -> gr93, gr96 -> gr64,
 203    7d  -> 5d,    60  -> 40
 204  */
 205
 206 /* Position of the "const" instruction within CALL_DUMMY in bytes.  */
 207 #undef CALL_DUMMY
 208 #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
 209 #ifdef KERNEL_DEBUGGING         /* gr96 -> gr64 */
 210 #define CALL_DUMMY {0x0400870f, 0x3600825d, 0x155d5d40, 0x03ff40ff,    \
 211                     0x02ff40ff, 0xc8008040, 0x70400101, 0x72500101}
 212 #else
 213 #define CALL_DUMMY {0x0400870f, 0x3600827d, 0x157d7d40, 0x03ff60ff,    \
 214                     0x02ff60ff, 0xc8008060, 0x70400101, 0x72500101}
 215 #endif                          /* KERNEL_DEBUGGING */
 216 #else                           /* Byte order differs.  */
 217 you lose
 218 #endif                          /* Byte order differs.  */
 219
 220 #if !defined(KERNEL_DEBUGGING)
 221 #ifdef SYM1
 222 #undef  DECR_PC_AFTER_BREAK
 223 #define DECR_PC_AFTER_BREAK 0   /* Sym1 kernel does the decrement */
 224 #else
 225 ->"ULTRA3 running other than sym1 OS" !;
 226 #endif
 227 #endif /* !KERNEL_DEBUGGING */