gdb/config/pa/tm-hppa64.h

   1 /* Parameters for execution on any Hewlett-Packard PA-RISC machine.
   2    Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1995
   3    Free Software Foundation, Inc.
   4
   5    Contributed by the Center for Software Science at the
   6    University of Utah (pa-gdb-bugs@cs.utah.edu).
   7
   8 This file is part of GDB.
   9
  10 This program is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2 of the License, or
  13 (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with this program; if not, write to the Free Software
  22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  23
  24 /* PA 64-bit specific definitions.  Override those which are in
  25    tm-hppa.h */
  26
  27 /* jimb: this must go.  I'm just using it to disable code I haven't
  28    gotten working yet.  */
  29 #define GDB_TARGET_IS_HPPA_20W
  30
  31 /* The low two bits of the IA are the privilege level of the instruction.  */
  32 #include "pa/tm-hppah.h"
  33
  34 #define HPUX_1100 1
  35
  36 #define ADDR_BITS_REMOVE(addr) ((CORE_ADDR)addr & (CORE_ADDR)~3)
  37
  38 /* Say how long (ordinary) registers are.  This is used in
  39    push_word and a few other places, but REGISTER_RAW_SIZE is
  40    the real way to know how big a register is.  */
  41
  42 #undef REGISTER_SIZE
  43 #define REGISTER_SIZE 8
  44
  45 /* Number of bytes of storage in the actual machine representation
  46    for register N.  On the PA-RISC 2.0, all regs are 8 bytes, including
  47    the FP registers (they're accessed as two 4 byte halves).  */
  48
  49 #undef REGISTER_RAW_SIZE
  50 #define REGISTER_RAW_SIZE(N) 8
  51
  52 /* Largest value REGISTER_RAW_SIZE can have.  */
  53
  54 #undef MAX_REGISTER_RAW_SIZE
  55 #define MAX_REGISTER_RAW_SIZE 8
  56
  57 /* Total amount of space needed to store our copies of the machine's
  58    register state, the array `registers'.  */
  59
  60 #undef REGISTER_BYTES
  61 #define REGISTER_BYTES (NUM_REGS * 8)
  62
  63 /* Index within `registers' of the first byte of the space for
  64    register N.  */
  65
  66 #undef REGISTER_BYTE
  67 #define REGISTER_BYTE(N) ((N) * 8)
  68
  69 #undef REGISTER_VIRTUAL_TYPE
  70 #define REGISTER_VIRTUAL_TYPE(N) \
  71  ((N) < FP4_REGNUM ? builtin_type_unsigned_long_long : builtin_type_double)
  72
  73
  74 /* Number of machine registers */
  75 #undef NUM_REGS
  76 #define NUM_REGS 96
  77
  78 /* Initializer for an array of names of registers.
  79    There should be NUM_REGS strings in this initializer.
  80    They are in rows of eight entries  */
  81 #undef REGISTER_NAMES
  82 #define REGISTER_NAMES  \
  83  {"flags",  "r1",      "rp",      "r3",    "r4",     "r5",      "r6",     "r7",    \
  84   "r8",     "r9",      "r10",     "r11",   "r12",    "r13",     "r14",    "r15",   \
  85   "r16",    "r17",     "r18",     "r19",   "r20",    "r21",     "r22",    "r23",   \
  86   "r24",    "r25",     "r26",     "dp",    "ret0",   "ret1",    "sp",     "r31",   \
  87   "sar",    "pcoqh",   "pcsqh",   "pcoqt", "pcsqt",  "eiem",    "iir",    "isr",   \
  88   "ior",    "ipsw",    "goto",    "sr4",   "sr0",    "sr1",     "sr2",    "sr3",   \
  89   "sr5",    "sr6",     "sr7",     "cr0",   "cr8",    "cr9",     "ccr",    "cr12",  \
  90   "cr13",   "cr24",    "cr25",    "cr26",  "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\
  91   "fpsr",    "fpe1",   "fpe2",    "fpe3",  "fr4",    "fr5",     "fr6",    "fr7", \
  92   "fr8",     "fr9",    "fr10",    "fr11",  "fr12",   "fr13",    "fr14",   "fr15", \
  93   "fr16",    "fr17",   "fr18",    "fr19",  "fr20",   "fr21",    "fr22",   "fr23", \
  94   "fr24",    "fr25",   "fr26",    "fr27",   "fr28",  "fr29",    "fr30",   "fr31"}
  95
  96 #undef FP0_REGNUM
  97 #undef FP4_REGNUM
  98 #define FP0_REGNUM 64           /* floating point reg. 0 (fspr)*/
  99 #define FP4_REGNUM 68
 100
 101 /* Redefine some target bit sizes from the default.  */
 102
 103 /* Number of bits in a long or unsigned long for the target machine. */
 104
 105 #define TARGET_LONG_BIT 64
 106
 107 /* Number of bits in a long long or unsigned long long for the
 108    target machine.  */
 109
 110 #define TARGET_LONG_LONG_BIT 64
 111
 112 /* Number of bits in a pointer for the target machine */
 113
 114 #define TARGET_PTR_BIT 64
 115
 116 /* Argument Pointer Register */
 117 #define AP_REGNUM 29
 118
 119 #define DP_REGNUM 27
 120
 121 #define FP5_REGNUM 70
 122
 123 #define SR5_REGNUM 48
 124
 125 #undef FRAME_ARGS_ADDRESS
 126 #define FRAME_ARGS_ADDRESS(fi) ((fi)->ap)
 127
 128 /* We access locals from SP. This may not work for frames which call
 129    alloca; for those, we may need to consult unwind tables.
 130    jimb: FIXME.  */
 131 #undef FRAME_LOCALS_ADDRESS
 132 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 133
 134 #define INIT_FRAME_AP init_frame_ap
 135
 136 #define EXTRA_FRAME_INFO  \
 137   CORE_ADDR ap;
 138
 139 /* For a number of horrible reasons we may have to adjust the location
 140    of variables on the stack.  Ugh.  jimb: why? */
 141 #define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
 142
 143 extern int hpread_adjust_stack_address PARAMS ((CORE_ADDR));
 144
 145
 146 /* jimb: omitted dynamic linking stuff here */
 147
 148 /* This sequence of words is the instructions
 149
 150 ; Call stack frame has already been built by gdb. Since we could be calling
 151 ; a varargs function, and we do not have the benefit of a stub to put things in
 152 ; the right place, we load the first 8 word of arguments into both the general
 153 ; and fp registers.
 154 call_dummy
 155         copy %r4,%r29
 156         copy %r5,%r22
 157         copy %r6,%r27
 158         fldd -64(0,%r29),%fr4
 159         fldd -56(0,%r29),%fr5
 160         fldd -48(0,%r29),%fr6
 161         fldd -40(0,%r29),%fr7
 162         fldd -32(0,%r29),%fr8
 163         fldd -24(0,%r29),%fr9
 164         fldd -16(0,%r29),%fr10
 165         fldd -8(0,%r29),%fr11
 166         copy %r22,%r1
 167         ldd -64(%r29), %r26
 168         ldd -56(%r29), %r25
 169         ldd -48(%r29), %r24
 170         ldd -40(%r29), %r23
 171         ldd -32(%r29), %r22
 172         ldd -24(%r29), %r21
 173         ldd -16(%r29), %r20
 174         bve,l (%r1),%r2
 175         ldd -8(%r29), %r19
 176         break 4, 8
 177         mtsp %r21, %sr0
 178         ble 0(%sr0, %r22)
 179         nop
 180 */
 181
 182 #undef CALL_DUMMY
 183 #define CALL_DUMMY {0x349d0000, 0x34b60000, 0x34db0000, \
 184                     0x53a43f83, 0x53a53f93, 0x53a63fa3, 0x53a73fb3,\
 185                     0x53a83fc3, 0x53a93fd3, 0x2fa1100a, 0x2fb1100b,\
 186                     0x36c10000, 0x53ba3f81, 0x53b93f91, 0x53b83fa1,\
 187                     0x53b73fb1, 0x53b63fc1, 0x53b53fd1, 0x0fa110d4,\
 188                     0xe820f000, 0x0fb110d3, 0x00010004, 0x00151820,\
 189                     0xe6c00000, 0x08000240}
 190
 191 #undef CALL_DUMMY_LENGTH
 192 #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 25)
 193
 194 /* The PA64 ABI mandates a 16 byte stack alignment.  */
 195 #undef STACK_ALIGN
 196 #define STACK_ALIGN(arg) ( ((arg)%16) ? (((arg)+15)&-16) : (arg))
 197
 198 /* The PA64 ABI reserves 64 bytes of stack space for outgoing register
 199    parameters.  */
 200 #undef REG_PARM_STACK_SPACE
 201 #define REG_PARM_STACK_SPACE 64
 202
 203 #undef FUNC_LDIL_OFFSET
 204 #undef FUNC_LDO_OFFSET
 205 #undef SR4EXPORT_LDIL_OFFSET
 206 #undef SR4EXPORT_LDO_OFFSET
 207 #undef CALL_DUMMY_LOCATION
 208
 209 #define PC_IN_CALL_DUMMY(pc, sp, frame_address) hppa64_pc_in_call_dummy (pc)
 210 /* jimb: need to find out what AT_WDB_CALL_DUMMY is about */
 211 #if 0
 212 #define CALL_DUMMY_LOCATION AFTER_TEXT_END
 213 extern CORE_ADDR wdb_call_dummy_addr;
 214 #undef PC_IN_CALL_DUMMY
 215 #define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
 216    ((pc) >= wdb_call_dummy_addr && \
 217     (pc) <= wdb_call_dummy_addr + CALL_DUMMY_LENGTH)
 218 #endif
 219
 220 #undef REG_STRUCT_HAS_ADDR
 221
 222 #undef EXTRACT_RETURN_VALUE
 223 /* RM: floats are returned in FR4R, doubles in FR4
 224  *     integral values are in r28, padded on the left
 225  *     aggregates less that 65 bits are in r28, right padded
 226  *     aggregates upto 128 bits are in r28 and r29, right padded
 227  */
 228 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 229   { \
 230     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT && !SOFT_FLOAT) \
 231       memcpy ((VALBUF), \
 232               ((char *)(REGBUF)) + REGISTER_BYTE (FP4_REGNUM) + \
 233               (REGISTER_SIZE - TYPE_LENGTH (TYPE)), \
 234               TYPE_LENGTH (TYPE)); \
 235     else if  (is_integral_type(TYPE) || SOFT_FLOAT)   \
 236        memcpy ((VALBUF), \
 237                (char *)(REGBUF) + REGISTER_BYTE (28) + \
 238                (REGISTER_SIZE - TYPE_LENGTH (TYPE)), \
 239                TYPE_LENGTH (TYPE)); \
 240     else if (TYPE_LENGTH (TYPE) <= 8)   \
 241        memcpy ((VALBUF), \
 242                (char *)(REGBUF) + REGISTER_BYTE (28), \
 243                TYPE_LENGTH (TYPE)); \
 244     else if (TYPE_LENGTH (TYPE) <= 16)   \
 245       { \
 246         memcpy ((VALBUF), \
 247                 (char *)(REGBUF) + REGISTER_BYTE (28), \
 248                 8); \
 249         memcpy (((char *) VALBUF + 8), \
 250                 (char *)(REGBUF) + REGISTER_BYTE (29), \
 251                 TYPE_LENGTH (TYPE) - 8); \
 252        } \
 253   }
 254
 255 /* RM: struct upto 128 bits are returned in registers */
 256 #undef USE_STRUCT_CONVENTION
 257 #define USE_STRUCT_CONVENTION(gcc_p, value_type)\
 258   (TYPE_LENGTH (value_type) > 16)
 259
 260 /* RM: for return command */
 261 #undef STORE_RETURN_VALUE
 262 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 263   { \
 264     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT && !SOFT_FLOAT) \
 265       write_register_bytes \
 266               (REGISTER_BYTE (FP4_REGNUM) + \
 267               (REGISTER_SIZE - TYPE_LENGTH (TYPE)), \
 268               (VALBUF), \
 269               TYPE_LENGTH (TYPE)); \
 270     else if (is_integral_type(TYPE) || SOFT_FLOAT)   \
 271        write_register_bytes \
 272               (REGISTER_BYTE (28) + \
 273                  (REGISTER_SIZE - TYPE_LENGTH (TYPE)), \
 274                (VALBUF), \
 275                TYPE_LENGTH (TYPE)); \
 276     else if (TYPE_LENGTH (TYPE) <= 8)   \
 277        write_register_bytes \
 278              ( REGISTER_BYTE (28), \
 279                (VALBUF), \
 280                TYPE_LENGTH (TYPE)); \
 281     else if (TYPE_LENGTH (TYPE) <= 16)   \
 282       { \
 283         write_register_bytes \
 284                (REGISTER_BYTE (28), \
 285                 (VALBUF), \
 286                 8); \
 287         write_register_bytes \
 288                (REGISTER_BYTE (29), \
 289                 ((char *) VALBUF + 8), \
 290                 TYPE_LENGTH (TYPE) - 8); \
 291        } \
 292   }
 293
 294 /* RM: these are the PA64 equivalents of the macros in tm-hppah.h --
 295  * see comments there.  For PA64, the save_state structure is at an
 296  * offset of 24 32-bit words from the sigcontext structure. The 64 bit
 297  * general registers are at an offset of 640 bytes from the beginning of the
 298  * save_state structure, and the floating pointer register are at an offset
 299  * of 256 bytes from the beginning of the save_state structure.
 300  */
 301 #undef FRAME_SAVED_PC_IN_SIGTRAMP
 302 #define FRAME_SAVED_PC_IN_SIGTRAMP(FRAME, TMP) \
 303 { \
 304   *(TMP) = read_memory_integer ((FRAME)->frame + (24 * 4) + 640 + (33 * 8), 8); \
 305 }
 306
 307 #undef FRAME_BASE_BEFORE_SIGTRAMP
 308 #define FRAME_BASE_BEFORE_SIGTRAMP(FRAME, TMP) \
 309 { \
 310   *(TMP) = read_memory_integer ((FRAME)->frame + (24 * 4) + 640 + (30 * 8), 8); \
 311 }
 312
 313 #undef FRAME_FIND_SAVED_REGS_IN_SIGTRAMP
 314 #define FRAME_FIND_SAVED_REGS_IN_SIGTRAMP(FRAME, FSR) \
 315 { \
 316   int i; \
 317   CORE_ADDR TMP1, TMP2; \
 318   TMP1 = (FRAME)->frame + (24 * 4) + 640; \
 319   TMP2 = (FRAME)->frame + (24 * 4) + 256; \
 320   for (i = 0; i < NUM_REGS; i++) \
 321     { \
 322       if (i == SP_REGNUM) \
 323         (FSR)->regs[SP_REGNUM] = read_memory_integer (TMP1 + SP_REGNUM * 8, 8); \
 324       else if (i >= FP0_REGNUM) \
 325         (FSR)->regs[i] = TMP2 + (i - FP0_REGNUM) * 8; \
 326       else \
 327         (FSR)->regs[i] = TMP1 + i * 8; \
 328     } \
 329 }
 330
 331 /* jimb: omitted purify call support */