gdb/config/sparc/tm-sp64.h

   1 /* Target machine sub-parameters for SPARC64, for GDB, the GNU debugger.
   2    This is included by other tm-*.h files to define SPARC64 cpu-related info.
   3    Copyright 1994, 1995, 1996 Free Software Foundation, Inc.
   4    This is (obviously) based on the SPARC Vn (n<9) port.
   5    Contributed by Doug Evans (dje@cygnus.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, Boston, MA 02111-1307, USA.  */
  22
  23 #define GDB_TARGET_IS_SPARC64
  24
  25 #include "sparc/tm-sparc.h"
  26
  27 /* Stack has strict alignment.  */
  28
  29 #undef  STACK_ALIGN
  30 #define STACK_ALIGN(ADDR) (((ADDR)+15)&-16)
  31
  32 /* Number of machine registers.  */
  33
  34 #undef  NUM_REGS
  35 #define NUM_REGS 125
  36
  37 /* Initializer for an array of names of registers.
  38    There should be NUM_REGS strings in this initializer.  */
  39 /* Some of these registers are only accessible from priviledged mode.
  40    They are here for kernel debuggers, etc.  */
  41 /* FIXME: icc and xcc are currently considered separate registers.
  42    This may have to change and consider them as just one (ccr).
  43    Let's postpone this as long as we can.  It's nice to be able to set
  44    them individually.  */
  45 /* FIXME: fcc0-3 are currently separate, even though they are also part of
  46    fsr.  May have to remove them but let's postpone this as long as
  47    possible.  It's nice to be able to set them individually.  */
  48 /* FIXME: Whether to include f33, f35, etc. here is not clear.
  49    There are advantages and disadvantages.  */
  50
  51 #undef  REGISTER_NAMES
  52 #define REGISTER_NAMES  \
  53 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
  54   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
  55   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
  56   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
  57                                                                 \
  58   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",               \
  59   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",         \
  60   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
  61   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
  62   "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",       \
  63   "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",       \
  64                                                                 \
  65   "pc", "npc", "ccr", "fsr", "fprs", "y", "asi",                \
  66   "ver", "tick", "pil", "pstate",                               \
  67   "tstate", "tba", "tl", "tt", "tpc", "tnpc", "wstate",         \
  68   "cwp", "cansave", "canrestore", "cleanwin", "otherwin",       \
  69   "asr16", "asr17", "asr18", "asr19", "asr20", "asr21",         \
  70   "asr22", "asr23", "asr24", "asr25", "asr26", "asr27",         \
  71   "asr28", "asr29", "asr30", "asr31",                           \
  72   /* These are here at the end to simplify removing them if we have to.  */ \
  73   "icc", "xcc", "fcc0", "fcc1", "fcc2", "fcc3"                  \
  74 }
  75
  76 /* Register numbers of various important registers.
  77    Note that some of these values are "real" register numbers,
  78    and correspond to the general registers of the machine,
  79    and some are "phony" register numbers which are too large
  80    to be actual register numbers as far as the user is concerned
  81    but do serve to get the desired values when passed to read_register.  */
  82
  83 #if 0 /* defined in tm-sparc.h, replicated for doc purposes */
  84 #define G0_REGNUM 0             /* %g0 */
  85 #define G1_REGNUM 1             /* %g1 */
  86 #define O0_REGNUM 8             /* %o0 */
  87 #define SP_REGNUM 14            /* Contains address of top of stack, \
  88                                    which is also the bottom of the frame.  */
  89 #define RP_REGNUM 15            /* Contains return address value, *before* \
  90                                    any windows get switched.  */
  91 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
  92 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
  93                                    rather than in machine registers */
  94 #define I0_REGNUM 24            /* %i0 */
  95 #define FP_REGNUM 30            /* Contains address of executing stack frame */
  96 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
  97 #define FP0_REGNUM 32           /* Floating point register 0 */
  98 #endif
  99
 100 #define FP_MAX_REGNUM 80        /* 1 + last fp reg number */
 101
 102 /* #undef v8 misc. regs */
 103
 104 #undef Y_REGNUM
 105 #undef PS_REGNUM
 106 #undef WIM_REGNUM
 107 #undef TBR_REGNUM
 108 #undef PC_REGNUM
 109 #undef NPC_REGNUM
 110 #undef FPS_REGNUM
 111 #undef CPS_REGNUM
 112
 113 /* v9 misc. and priv. regs */
 114
 115 #define C0_REGNUM FP_MAX_REGNUM                 /* Start of control registers */
 116 #define PC_REGNUM (C0_REGNUM + 0)               /* Current PC */
 117 #define NPC_REGNUM (C0_REGNUM + 1)              /* Next PC */
 118 #define CCR_REGNUM (C0_REGNUM + 2)              /* Condition Code Register (%xcc,%icc) */
 119 #define FSR_REGNUM (C0_REGNUM + 3)              /* Floating Point State */
 120 #define FPRS_REGNUM (C0_REGNUM + 4)             /* Floating Point Registers State */
 121 #define Y_REGNUM (C0_REGNUM + 5)                /* Temp register for multiplication, etc.  */
 122 #define ASI_REGNUM (C0_REGNUM + 6)              /* Alternate Space Identifier */
 123 #define VER_REGNUM (C0_REGNUM + 7)              /* Version register */
 124 #define TICK_REGNUM (C0_REGNUM + 8)             /* Tick register */
 125 #define PIL_REGNUM (C0_REGNUM + 9)              /* Processor Interrupt Level */
 126 #define PSTATE_REGNUM (C0_REGNUM + 10)          /* Processor State */
 127 #define TSTATE_REGNUM (C0_REGNUM + 11)          /* Trap State */
 128 #define TBA_REGNUM (C0_REGNUM + 12)             /* Trap Base Address */
 129 #define TL_REGNUM (C0_REGNUM + 13)              /* Trap Level */
 130 #define TT_REGNUM (C0_REGNUM + 14)              /* Trap Type */
 131 #define TPC_REGNUM (C0_REGNUM + 15)             /* Trap pc */
 132 #define TNPC_REGNUM (C0_REGNUM + 16)            /* Trap npc */
 133 #define WSTATE_REGNUM (C0_REGNUM + 17)          /* Window State */
 134 #define CWP_REGNUM (C0_REGNUM + 18)             /* Current Window Pointer */
 135 #define CANSAVE_REGNUM (C0_REGNUM + 19)         /* Savable Windows */
 136 #define CANRESTORE_REGNUM (C0_REGNUM + 20)      /* Restorable Windows */
 137 #define CLEANWIN_REGNUM (C0_REGNUM + 21)        /* Clean Windows */
 138 #define OTHERWIN_REGNUM (C0_REGNUM + 22)        /* Other Windows */
 139 #define ASR_REGNUM(n) (C0_REGNUM+(23-16)+(n))   /* Ancillary State Register
 140                                                    (n = 16...31) */
 141 #define ICC_REGNUM (C0_REGNUM + 39)             /* 32 bit condition codes */
 142 #define XCC_REGNUM (C0_REGNUM + 40)             /* 64 bit condition codes */
 143 #define FCC0_REGNUM (C0_REGNUM + 41)            /* fp cc reg 0 */
 144 #define FCC1_REGNUM (C0_REGNUM + 42)            /* fp cc reg 1 */
 145 #define FCC2_REGNUM (C0_REGNUM + 43)            /* fp cc reg 2 */
 146 #define FCC3_REGNUM (C0_REGNUM + 44)            /* fp cc reg 3 */
 147
 148 /* Total amount of space needed to store our copies of the machine's
 149    register state, the array `registers'.
 150    Some of the registers aren't 64 bits, but it's a lot simpler just to assume
 151    they all are (since most of them are).  */
 152 #undef  REGISTER_BYTES
 153 #define REGISTER_BYTES (32*8+32*8+45*8)
 154
 155 /* Index within `registers' of the first byte of the space for
 156    register N.  */
 157 #undef  REGISTER_BYTE
 158 #define REGISTER_BYTE(N) \
 159   ((N) < 32 ? (N)*8                             \
 160    : (N) < 64 ? 32*8 + ((N)-32)*4               \
 161    : (N) < C0_REGNUM ? 32*8 + 32*4 + ((N)-64)*8 \
 162    : 64*8 + ((N)-C0_REGNUM)*8)
 163
 164 /* Say how long (ordinary) registers are.  This is a piece of bogosity
 165    used in push_word and a few other places; REGISTER_RAW_SIZE is the
 166    real way to know how big a register is.  */
 167
 168 #undef  REGISTER_SIZE
 169 #define REGISTER_SIZE 8
 170
 171 /* Number of bytes of storage in the actual machine representation
 172    for register N.  */
 173
 174 #undef  REGISTER_RAW_SIZE
 175 #define REGISTER_RAW_SIZE(N) \
 176   ((N) < 32 ? 8 : (N) < 64 ? 4 : 8)
 177
 178 /* Number of bytes of storage in the program's representation
 179    for register N.  */
 180
 181 #undef  REGISTER_VIRTUAL_SIZE
 182 #define REGISTER_VIRTUAL_SIZE(N) \
 183   ((N) < 32 ? 8 : (N) < 64 ? 4 : 8)
 184
 185 /* Largest value REGISTER_RAW_SIZE can have.  */
 186 /* tm-sparc.h defines this as 8, but play it safe.  */
 187
 188 #undef  MAX_REGISTER_RAW_SIZE
 189 #define MAX_REGISTER_RAW_SIZE 8
 190
 191 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 192 /* tm-sparc.h defines this as 8, but play it safe.  */
 193
 194 #undef  MAX_REGISTER_VIRTUAL_SIZE
 195 #define MAX_REGISTER_VIRTUAL_SIZE 8
 196
 197 /* Return the GDB type object for the "standard" data type
 198    of data in register N.  */
 199
 200 #undef  REGISTER_VIRTUAL_TYPE
 201 #define REGISTER_VIRTUAL_TYPE(N) \
 202  ((N) < 32 ? builtin_type_long_long \
 203   : (N) < 64 ? builtin_type_float \
 204   : (N) < 80 ? builtin_type_double \
 205   : builtin_type_long_long)
 206
 207 /* We use to support both 32 bit and 64 bit pointers.
 208    We can't anymore because TARGET_PTR_BIT must now be a constant.  */
 209 #undef  TARGET_PTR_BIT
 210 #define TARGET_PTR_BIT 64
 211
 212 /* Does the specified function use the "struct returning" convention
 213    or the "value returning" convention?  The "value returning" convention
 214    almost invariably returns the entire value in registers.  The
 215    "struct returning" convention often returns the entire value in
 216    memory, and passes a pointer (out of or into the function) saying
 217    where the value (is or should go).
 218
 219    Since this sometimes depends on whether it was compiled with GCC,
 220    this is also an argument.  This is used in call_function to build a
 221    stack, and in value_being_returned to print return values.
 222
 223    On sparc64, all structs are returned via a pointer.  */
 224
 225 #undef  USE_STRUCT_CONVENTION
 226 #define USE_STRUCT_CONVENTION(gcc_p, type) 1
 227
 228 /* Store the address of the place in which to copy the structure the
 229    subroutine will return.  This is called from call_function. */
 230 /* FIXME: V9 uses %o0 for this.  */
 231
 232 #undef  STORE_STRUCT_RETURN
 233 #define STORE_STRUCT_RETURN(ADDR, SP) \
 234   { target_write_memory ((SP)+(16*8), (char *)&(ADDR), 8); }
 235
 236 /* Return number of bytes at start of arglist that are not really args.  */
 237
 238 #undef  FRAME_ARGS_SKIP
 239 #define FRAME_ARGS_SKIP 136
 240 \f
 241 /* We need two arguments (in general) to the "info frame" command.
 242    Note that the definition of this macro implies that there exists a
 243    function "setup_arbitrary_frame" in sparc-tdep.c */
 244
 245 #undef  SETUP_ARBITRARY_FRAME           /*FIXME*/
 246 #undef  FRAME_SPECIFICATION_DYADIC
 247 #define FRAME_SPECIFICATION_DYADIC
 248
 249 /* To print every pair of float registers as a double, we use this hook.
 250    We also print the condition code registers in a readable format
 251    (FIXME: can expand this to all control regs).  */
 252
 253 #undef  PRINT_REGISTER_HOOK
 254 #define PRINT_REGISTER_HOOK(regno)      \
 255   sparc_print_register_hook (regno)
 256
 257 /* Offsets into jmp_buf.
 258    FIXME: This was borrowed from the v8 stuff and will probably have to change
 259    for v9.  */
 260
 261 #define JB_ELEMENT_SIZE 8       /* Size of each element in jmp_buf */
 262
 263 #define JB_ONSSTACK 0
 264 #define JB_SIGMASK 1
 265 #define JB_SP 2
 266 #define JB_PC 3
 267 #define JB_NPC 4
 268 #define JB_PSR 5
 269 #define JB_G1 6
 270 #define JB_O0 7
 271 #define JB_WBCNT 8
 272
 273 /* Figure out where the longjmp will land.  We expect that we have just entered
 274    longjmp and haven't yet setup the stack frame, so the args are still in the
 275    output regs.  %o0 (O0_REGNUM) points at the jmp_buf structure from which we
 276    extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
 277    This routine returns true on success */
 278
 279 extern int
 280 get_longjmp_target PARAMS ((CORE_ADDR *));
 281
 282 #define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)