| 1 | /* Parameters for execution on any Hewlett-Packard PA-RISC machine. |
| 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 3 | 1998, 1999, 2000 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, |
| 23 | Boston, MA 02111-1307, USA. */ |
| 24 | |
| 25 | #include "regcache.h" |
| 26 | |
| 27 | #define GDB_MULTI_ARCH 0 |
| 28 | |
| 29 | /* NOTE: cagney/2002-11-24: This is a guess. */ |
| 30 | #define DEPRECATED_USE_GENERIC_DUMMY_FRAMES 0 |
| 31 | #define CALL_DUMMY_LOCATION ON_STACK |
| 32 | #define DEPRECATED_PC_IN_CALL_DUMMY(pc, sp, frame_address) deprecated_pc_in_call_dummy_on_stack (pc, sp, frame_address) |
| 33 | #define DEPRECATED_INIT_FRAME_PC(l,f) (init_frame_pc_default (l, f)) |
| 34 | |
| 35 | /* Forward declarations of some types we use in prototypes */ |
| 36 | |
| 37 | struct frame_info; |
| 38 | struct frame_saved_regs; |
| 39 | struct value; |
| 40 | struct type; |
| 41 | struct inferior_status; |
| 42 | |
| 43 | /* By default assume we don't have to worry about software floating point. */ |
| 44 | #ifndef SOFT_FLOAT |
| 45 | #define SOFT_FLOAT 0 |
| 46 | #endif |
| 47 | |
| 48 | /* Get at various relevent fields of an instruction word. */ |
| 49 | |
| 50 | #define MASK_5 0x1f |
| 51 | #define MASK_11 0x7ff |
| 52 | #define MASK_14 0x3fff |
| 53 | #define MASK_21 0x1fffff |
| 54 | |
| 55 | /* This macro gets bit fields using HP's numbering (MSB = 0) */ |
| 56 | #ifndef GET_FIELD |
| 57 | #define GET_FIELD(X, FROM, TO) \ |
| 58 | ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1)) |
| 59 | #endif |
| 60 | |
| 61 | #if !GDB_MULTI_ARCH |
| 62 | extern int hppa_reg_struct_has_addr (int gcc_p, struct type *type); |
| 63 | #define REG_STRUCT_HAS_ADDR(gcc_p,type) hppa_reg_struct_has_addr (gcc_p,type) |
| 64 | #endif |
| 65 | |
| 66 | /* Offset from address of function to start of its code. |
| 67 | Zero on most machines. */ |
| 68 | |
| 69 | #if !GDB_MULTI_ARCH |
| 70 | #define FUNCTION_START_OFFSET 0 |
| 71 | #endif |
| 72 | |
| 73 | /* Advance PC across any function entry prologue instructions |
| 74 | to reach some "real" code. */ |
| 75 | |
| 76 | #if !GDB_MULTI_ARCH |
| 77 | extern CORE_ADDR hppa_skip_prologue (CORE_ADDR); |
| 78 | #define SKIP_PROLOGUE(pc) (hppa_skip_prologue (pc)) |
| 79 | #endif |
| 80 | |
| 81 | /* If PC is in some function-call trampoline code, return the PC |
| 82 | where the function itself actually starts. If not, return NULL. */ |
| 83 | |
| 84 | #if !GDB_MULTI_ARCH |
| 85 | #define SKIP_TRAMPOLINE_CODE(pc) hppa_skip_trampoline_code (pc) |
| 86 | extern CORE_ADDR hppa_skip_trampoline_code (CORE_ADDR); |
| 87 | #endif |
| 88 | |
| 89 | /* Return non-zero if we are in an appropriate trampoline. */ |
| 90 | |
| 91 | #if !GDB_MULTI_ARCH |
| 92 | #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \ |
| 93 | hppa_in_solib_call_trampoline (pc, name) |
| 94 | extern int hppa_in_solib_call_trampoline (CORE_ADDR, char *); |
| 95 | #endif |
| 96 | |
| 97 | #if !GDB_MULTI_ARCH |
| 98 | #define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \ |
| 99 | hppa_in_solib_return_trampoline (pc, name) |
| 100 | extern int hppa_in_solib_return_trampoline (CORE_ADDR, char *); |
| 101 | #endif |
| 102 | |
| 103 | #if !GDB_MULTI_ARCH |
| 104 | #undef SAVED_PC_AFTER_CALL |
| 105 | #define SAVED_PC_AFTER_CALL(frame) hppa_saved_pc_after_call (frame) |
| 106 | extern CORE_ADDR hppa_saved_pc_after_call (struct frame_info *); |
| 107 | #endif |
| 108 | |
| 109 | #if !GDB_MULTI_ARCH |
| 110 | extern int hppa_inner_than (CORE_ADDR lhs, CORE_ADDR rhs); |
| 111 | #define INNER_THAN(lhs,rhs) hppa_inner_than(lhs,rhs) |
| 112 | #endif |
| 113 | |
| 114 | #if !GDB_MULTI_ARCH |
| 115 | extern CORE_ADDR hppa_stack_align (CORE_ADDR sp); |
| 116 | #define STACK_ALIGN(sp) hppa_stack_align (sp) |
| 117 | #endif |
| 118 | |
| 119 | #if !GDB_MULTI_ARCH |
| 120 | #define EXTRA_STACK_ALIGNMENT_NEEDED 0 |
| 121 | #endif |
| 122 | |
| 123 | /* Sequence of bytes for breakpoint instruction. */ |
| 124 | |
| 125 | #define BREAKPOINT {0x00, 0x01, 0x00, 0x04} |
| 126 | #define BREAKPOINT32 0x10004 |
| 127 | |
| 128 | /* Amount PC must be decremented by after a breakpoint. |
| 129 | This is often the number of bytes in BREAKPOINT |
| 130 | but not always. |
| 131 | |
| 132 | Not on the PA-RISC */ |
| 133 | |
| 134 | #if !GDB_MULTI_ARCH |
| 135 | #define DECR_PC_AFTER_BREAK 0 |
| 136 | #endif |
| 137 | |
| 138 | extern int hppa_pc_requires_run_before_use (CORE_ADDR pc); |
| 139 | #define PC_REQUIRES_RUN_BEFORE_USE(pc) hppa_pc_requires_run_before_use (pc) |
| 140 | |
| 141 | /* Say how long (ordinary) registers are. This is a piece of bogosity |
| 142 | used in push_word and a few other places; REGISTER_RAW_SIZE is the |
| 143 | real way to know how big a register is. */ |
| 144 | |
| 145 | #if !GDB_MULTI_ARCH |
| 146 | #define REGISTER_SIZE 4 |
| 147 | #endif |
| 148 | |
| 149 | /* Number of machine registers */ |
| 150 | |
| 151 | #if !GDB_MULTI_ARCH |
| 152 | #define NUM_REGS 128 |
| 153 | #endif |
| 154 | |
| 155 | /* Initializer for an array of names of registers. |
| 156 | There should be NUM_REGS strings in this initializer. |
| 157 | They are in rows of eight entries */ |
| 158 | |
| 159 | #define REGISTER_NAMES \ |
| 160 | {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", \ |
| 161 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ |
| 162 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ |
| 163 | "r24", "r25", "r26", "dp", "ret0", "ret1", "sp", "r31", \ |
| 164 | "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", "eiem", "iir", "isr", \ |
| 165 | "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", "sr3", \ |
| 166 | "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", \ |
| 167 | "cr13", "cr24", "cr25", "cr26", "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\ |
| 168 | "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \ |
| 169 | "fr4", "fr4R", "fr5", "fr5R", "fr6", "fr6R", "fr7", "fr7R", \ |
| 170 | "fr8", "fr8R", "fr9", "fr9R", "fr10", "fr10R", "fr11", "fr11R", \ |
| 171 | "fr12", "fr12R", "fr13", "fr13R", "fr14", "fr14R", "fr15", "fr15R", \ |
| 172 | "fr16", "fr16R", "fr17", "fr17R", "fr18", "fr18R", "fr19", "fr19R", \ |
| 173 | "fr20", "fr20R", "fr21", "fr21R", "fr22", "fr22R", "fr23", "fr23R", \ |
| 174 | "fr24", "fr24R", "fr25", "fr25R", "fr26", "fr26R", "fr27", "fr27R", \ |
| 175 | "fr28", "fr28R", "fr29", "fr29R", "fr30", "fr30R", "fr31", "fr31R"} |
| 176 | |
| 177 | /* Register numbers of various important registers. |
| 178 | Note that some of these values are "real" register numbers, |
| 179 | and correspond to the general registers of the machine, |
| 180 | and some are "phony" register numbers which are too large |
| 181 | to be actual register numbers as far as the user is concerned |
| 182 | but do serve to get the desired values when passed to read_register. */ |
| 183 | |
| 184 | #define R0_REGNUM 0 /* Doesn't actually exist, used as base for |
| 185 | other r registers. */ |
| 186 | #define FLAGS_REGNUM 0 /* Various status flags */ |
| 187 | #define RP_REGNUM 2 /* return pointer */ |
| 188 | #if !GDB_MULTI_ARCH |
| 189 | #define FP_REGNUM 3 /* Contains address of executing stack */ |
| 190 | /* frame */ |
| 191 | #endif |
| 192 | #if !GDB_MULTI_ARCH |
| 193 | #define SP_REGNUM 30 /* Contains address of top of stack */ |
| 194 | #endif |
| 195 | #define SAR_REGNUM 32 /* Shift Amount Register */ |
| 196 | #define IPSW_REGNUM 41 /* Interrupt Processor Status Word */ |
| 197 | #define PCOQ_HEAD_REGNUM 33 /* instruction offset queue head */ |
| 198 | #define PCSQ_HEAD_REGNUM 34 /* instruction space queue head */ |
| 199 | #define PCOQ_TAIL_REGNUM 35 /* instruction offset queue tail */ |
| 200 | #define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */ |
| 201 | #define EIEM_REGNUM 37 /* External Interrupt Enable Mask */ |
| 202 | #define IIR_REGNUM 38 /* Interrupt Instruction Register */ |
| 203 | #define IOR_REGNUM 40 /* Interrupt Offset Register */ |
| 204 | #define SR4_REGNUM 43 /* space register 4 */ |
| 205 | #define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */ |
| 206 | #define CCR_REGNUM 54 /* Coprocessor Configuration Register */ |
| 207 | #define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */ |
| 208 | #define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */ |
| 209 | #if !GDB_MULTI_ARCH |
| 210 | #define FP0_REGNUM 64 /* floating point reg. 0 (fspr) */ |
| 211 | #endif |
| 212 | #define FP4_REGNUM 72 |
| 213 | |
| 214 | #define ARG0_REGNUM 26 /* The first argument of a callee. */ |
| 215 | #define ARG1_REGNUM 25 /* The second argument of a callee. */ |
| 216 | #define ARG2_REGNUM 24 /* The third argument of a callee. */ |
| 217 | #define ARG3_REGNUM 23 /* The fourth argument of a callee. */ |
| 218 | |
| 219 | /* compatibility with the rest of gdb. */ |
| 220 | #if !GDB_MULTI_ARCH |
| 221 | #define PC_REGNUM PCOQ_HEAD_REGNUM |
| 222 | #endif |
| 223 | #if !GDB_MULTI_ARCH |
| 224 | #define NPC_REGNUM PCOQ_TAIL_REGNUM |
| 225 | #endif |
| 226 | |
| 227 | /* |
| 228 | * Processor Status Word Masks |
| 229 | */ |
| 230 | |
| 231 | #define PSW_T 0x01000000 /* Taken Branch Trap Enable */ |
| 232 | #define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */ |
| 233 | #define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */ |
| 234 | #define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */ |
| 235 | #define PSW_X 0x00100000 /* Data Memory Break Disable */ |
| 236 | #define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */ |
| 237 | #define PSW_C 0x00040000 /* Code Address Translation Enable */ |
| 238 | #define PSW_V 0x00020000 /* Divide Step Correction */ |
| 239 | #define PSW_M 0x00010000 /* High-Priority Machine Check Disable */ |
| 240 | #define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */ |
| 241 | #define PSW_R 0x00000010 /* Recovery Counter Enable */ |
| 242 | #define PSW_Q 0x00000008 /* Interruption State Collection Enable */ |
| 243 | #define PSW_P 0x00000004 /* Protection ID Validation Enable */ |
| 244 | #define PSW_D 0x00000002 /* Data Address Translation Enable */ |
| 245 | #define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */ |
| 246 | /* Machine Check Interruption Enable */ |
| 247 | |
| 248 | /* When fetching register values from an inferior or a core file, |
| 249 | clean them up using this macro. BUF is a char pointer to |
| 250 | the raw value of the register in the registers[] array. */ |
| 251 | |
| 252 | #define DEPRECATED_CLEAN_UP_REGISTER_VALUE(regno, buf) \ |
| 253 | do { \ |
| 254 | if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \ |
| 255 | (buf)[sizeof(CORE_ADDR) -1] &= ~0x3; \ |
| 256 | } while (0) |
| 257 | |
| 258 | /* Define DEPRECATED_REGISTERS_INFO() to do machine-specific formatting |
| 259 | of register dumps. */ |
| 260 | |
| 261 | #define DEPRECATED_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp) |
| 262 | extern void pa_do_registers_info (int, int); |
| 263 | |
| 264 | #if 0 |
| 265 | #define STRCAT_REGISTER(regnum, fpregs, stream, precision) pa_do_strcat_registers_info (regnum, fpregs, stream, precision) |
| 266 | extern void pa_do_strcat_registers_info (int, int, struct ui_file *, enum precision_type); |
| 267 | #endif |
| 268 | |
| 269 | /* PA specific macro to see if the current instruction is nullified. */ |
| 270 | #ifndef INSTRUCTION_NULLIFIED |
| 271 | extern int hppa_instruction_nullified (void); |
| 272 | #define INSTRUCTION_NULLIFIED hppa_instruction_nullified () |
| 273 | #endif |
| 274 | |
| 275 | /* Number of bytes of storage in the actual machine representation |
| 276 | for register N. On the PA-RISC, all regs are 4 bytes, including |
| 277 | the FP registers (they're accessed as two 4 byte halves). */ |
| 278 | |
| 279 | #if !GDB_MULTI_ARCH |
| 280 | extern int hppa_register_raw_size (int reg_nr); |
| 281 | #define REGISTER_RAW_SIZE(N) hppa_register_raw_size (N) |
| 282 | #endif |
| 283 | |
| 284 | /* Total amount of space needed to store our copies of the machine's |
| 285 | register state, the array `registers'. */ |
| 286 | #if !GDB_MULTI_ARCH |
| 287 | #define REGISTER_BYTES (NUM_REGS * 4) |
| 288 | #endif |
| 289 | |
| 290 | #if !GDB_MULTI_ARCH |
| 291 | extern int hppa_register_byte (int reg_nr); |
| 292 | #define REGISTER_BYTE(N) hppa_register_byte (N) |
| 293 | #endif |
| 294 | |
| 295 | /* Number of bytes of storage in the program's representation |
| 296 | for register N. */ |
| 297 | |
| 298 | #if !GDB_MULTI_ARCH |
| 299 | #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N) |
| 300 | #endif |
| 301 | |
| 302 | /* Largest value REGISTER_RAW_SIZE can have. */ |
| 303 | |
| 304 | #if !GDB_MULTI_ARCH |
| 305 | #define MAX_REGISTER_RAW_SIZE 4 |
| 306 | #endif |
| 307 | |
| 308 | /* Largest value REGISTER_VIRTUAL_SIZE can have. */ |
| 309 | |
| 310 | #if !GDB_MULTI_ARCH |
| 311 | #define MAX_REGISTER_VIRTUAL_SIZE 8 |
| 312 | #endif |
| 313 | |
| 314 | #if !GDB_MULTI_ARCH |
| 315 | extern struct type * hppa_register_virtual_type (int reg_nr); |
| 316 | #define REGISTER_VIRTUAL_TYPE(N) hppa_register_virtual_type (N) |
| 317 | #endif |
| 318 | |
| 319 | #if !GDB_MULTI_ARCH |
| 320 | extern void hppa_store_struct_return (CORE_ADDR addr, CORE_ADDR sp); |
| 321 | #define STORE_STRUCT_RETURN(ADDR, SP) hppa_store_struct_return (ADDR, SP) |
| 322 | #endif |
| 323 | |
| 324 | /* Extract from an array REGBUF containing the (raw) register state |
| 325 | a function return value of type TYPE, and copy that, in virtual format, |
| 326 | into VALBUF. */ |
| 327 | |
| 328 | #if !GDB_MULTI_ARCH |
| 329 | void hppa_extract_return_value (struct type *type, char *regbuf, char *valbuf); |
| 330 | #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
| 331 | hppa_extract_return_value (TYPE, REGBUF, VALBUF); |
| 332 | #endif |
| 333 | |
| 334 | /* elz: decide whether the function returning a value of type type |
| 335 | will put it on the stack or in the registers. |
| 336 | The pa calling convention says that: |
| 337 | register 28 (called ret0 by gdb) contains any ASCII char, |
| 338 | and any non_floating point value up to 32-bits. |
| 339 | reg 28 and 29 contain non-floating point up tp 64 bits and larger |
| 340 | than 32 bits. (higer order word in reg 28). |
| 341 | fr4: floating point up to 64 bits |
| 342 | sr1: space identifier (32-bit) |
| 343 | stack: any lager than 64-bit, with the address in r28 |
| 344 | */ |
| 345 | #if !GDB_MULTI_ARCH |
| 346 | extern use_struct_convention_fn hppa_use_struct_convention; |
| 347 | #define USE_STRUCT_CONVENTION(gcc_p,type) hppa_use_struct_convention (gcc_p,type) |
| 348 | #endif |
| 349 | |
| 350 | /* Write into appropriate registers a function return value |
| 351 | of type TYPE, given in virtual format. */ |
| 352 | |
| 353 | #if !GDB_MULTI_ARCH |
| 354 | extern void hppa_store_return_value (struct type *type, char *valbuf); |
| 355 | #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \ |
| 356 | hppa_store_return_value (TYPE, VALBUF); |
| 357 | #endif |
| 358 | |
| 359 | #if !GDB_MULTI_ARCH |
| 360 | extern CORE_ADDR hppa_extract_struct_value_address (char *regbuf); |
| 361 | #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ |
| 362 | hppa_extract_struct_value_address (REGBUF) |
| 363 | #endif |
| 364 | |
| 365 | /* elz: Return a large value, which is stored on the stack at addr. |
| 366 | This is defined only for the hppa, at this moment. The above macro |
| 367 | DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS is not called anymore, |
| 368 | because it assumes that on exit from a called function which |
| 369 | returns a large structure on the stack, the address of the ret |
| 370 | structure is still in register 28. Unfortunately this register is |
| 371 | usually overwritten by the called function itself, on hppa. This is |
| 372 | specified in the calling convention doc. As far as I know, the only |
| 373 | way to get the return value is to have the caller tell us where it |
| 374 | told the callee to put it, rather than have the callee tell us. */ |
| 375 | struct value *hppa_value_returned_from_stack (register struct type *valtype, |
| 376 | CORE_ADDR addr); |
| 377 | #define VALUE_RETURNED_FROM_STACK(valtype,addr) \ |
| 378 | hppa_value_returned_from_stack (valtype, addr) |
| 379 | |
| 380 | #if !GDB_MULTI_ARCH |
| 381 | extern int hppa_cannot_store_register (int regnum); |
| 382 | #define CANNOT_STORE_REGISTER(regno) hppa_cannot_store_register (regno) |
| 383 | #endif |
| 384 | |
| 385 | #if !GDB_MULTI_ARCH |
| 386 | #define INIT_EXTRA_FRAME_INFO(fromleaf, frame) hppa_init_extra_frame_info (fromleaf, frame) |
| 387 | extern void hppa_init_extra_frame_info (int, struct frame_info *); |
| 388 | #endif |
| 389 | |
| 390 | /* Describe the pointer in each stack frame to the previous stack frame |
| 391 | (its caller). */ |
| 392 | |
| 393 | /* FRAME_CHAIN takes a frame's nominal address and produces the |
| 394 | frame's chain-pointer. */ |
| 395 | |
| 396 | /* In the case of the PA-RISC, the frame's nominal address |
| 397 | is the address of a 4-byte word containing the calling frame's |
| 398 | address (previous FP). */ |
| 399 | |
| 400 | #if !GDB_MULTI_ARCH |
| 401 | #define FRAME_CHAIN(thisframe) hppa_frame_chain (thisframe) |
| 402 | extern CORE_ADDR hppa_frame_chain (struct frame_info *); |
| 403 | #endif |
| 404 | |
| 405 | #if !GDB_MULTI_ARCH |
| 406 | extern int hppa_frame_chain_valid (CORE_ADDR, struct frame_info *); |
| 407 | #define FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe) |
| 408 | #endif |
| 409 | |
| 410 | /* Define other aspects of the stack frame. */ |
| 411 | |
| 412 | /* A macro that tells us whether the function invocation represented |
| 413 | by FI does not have a frame on the stack associated with it. If it |
| 414 | does not, FRAMELESS is set to 1, else 0. */ |
| 415 | #if !GDB_MULTI_ARCH |
| 416 | #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
| 417 | (hppa_frameless_function_invocation (FI)) |
| 418 | extern int hppa_frameless_function_invocation (struct frame_info *); |
| 419 | #endif |
| 420 | |
| 421 | #if !GDB_MULTI_ARCH |
| 422 | extern CORE_ADDR hppa_frame_saved_pc (struct frame_info *frame); |
| 423 | #define FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME) |
| 424 | #endif |
| 425 | |
| 426 | #if !GDB_MULTI_ARCH |
| 427 | extern CORE_ADDR hppa_frame_args_address (struct frame_info *fi); |
| 428 | #define FRAME_ARGS_ADDRESS(fi) hppa_frame_args_address (fi) |
| 429 | #endif |
| 430 | |
| 431 | #if !GDB_MULTI_ARCH |
| 432 | extern CORE_ADDR hppa_frame_locals_address (struct frame_info *fi); |
| 433 | #define FRAME_LOCALS_ADDRESS(fi) hppa_frame_locals_address (fi) |
| 434 | #endif |
| 435 | |
| 436 | #if !GDB_MULTI_ARCH |
| 437 | extern int hppa_frame_num_args (struct frame_info *frame); |
| 438 | #define FRAME_NUM_ARGS(fi) hppa_frame_num_args (fi) |
| 439 | #endif |
| 440 | |
| 441 | #if !GDB_MULTI_ARCH |
| 442 | #define FRAME_ARGS_SKIP 0 |
| 443 | #endif |
| 444 | |
| 445 | #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ |
| 446 | hppa_frame_find_saved_regs (frame_info, &frame_saved_regs) |
| 447 | extern void |
| 448 | hppa_frame_find_saved_regs (struct frame_info *, struct frame_saved_regs *); |
| 449 | \f |
| 450 | |
| 451 | /* Things needed for making the inferior call functions. */ |
| 452 | |
| 453 | /* Push an empty stack frame, to record the current PC, etc. */ |
| 454 | |
| 455 | /* FIXME: brobecker 2002-12-26. This macro definition takes advantage |
| 456 | of the fact that PUSH_DUMMY_FRAME is called within a function where |
| 457 | a variable inf_status of type struct inferior_status * is defined. |
| 458 | Ugh! Until this is fixed, we will not be able to move to multiarch |
| 459 | partial. */ |
| 460 | #define PUSH_DUMMY_FRAME hppa_push_dummy_frame (inf_status) |
| 461 | extern void hppa_push_dummy_frame (struct inferior_status *); |
| 462 | |
| 463 | /* Discard from the stack the innermost frame, |
| 464 | restoring all saved registers. */ |
| 465 | #if !GDB_MULTI_ARCH |
| 466 | #define POP_FRAME hppa_pop_frame () |
| 467 | extern void hppa_pop_frame (void); |
| 468 | #endif |
| 469 | |
| 470 | #define INSTRUCTION_SIZE 4 |
| 471 | |
| 472 | #ifndef PA_LEVEL_0 |
| 473 | |
| 474 | /* Non-level zero PA's have space registers (but they don't always have |
| 475 | floating-point, do they???? */ |
| 476 | |
| 477 | /* This sequence of words is the instructions |
| 478 | |
| 479 | ; Call stack frame has already been built by gdb. Since we could be calling |
| 480 | ; a varargs function, and we do not have the benefit of a stub to put things in |
| 481 | ; the right place, we load the first 4 word of arguments into both the general |
| 482 | ; and fp registers. |
| 483 | call_dummy |
| 484 | ldw -36(sp), arg0 |
| 485 | ldw -40(sp), arg1 |
| 486 | ldw -44(sp), arg2 |
| 487 | ldw -48(sp), arg3 |
| 488 | ldo -36(sp), r1 |
| 489 | fldws 0(0, r1), fr4 |
| 490 | fldds -4(0, r1), fr5 |
| 491 | fldws -8(0, r1), fr6 |
| 492 | fldds -12(0, r1), fr7 |
| 493 | ldil 0, r22 ; FUNC_LDIL_OFFSET must point here |
| 494 | ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here |
| 495 | ldsid (0,r22), r4 |
| 496 | ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here |
| 497 | ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here |
| 498 | ldsid (0,r1), r20 |
| 499 | combt,=,n r4, r20, text_space ; If target is in data space, do a |
| 500 | ble 0(sr5, r22) ; "normal" procedure call |
| 501 | copy r31, r2 |
| 502 | break 4, 8 |
| 503 | mtsp r21, sr0 |
| 504 | ble,n 0(sr0, r22) |
| 505 | text_space ; Otherwise, go through _sr4export, |
| 506 | ble (sr4, r1) ; which will return back here. |
| 507 | stw r31,-24(r30) |
| 508 | break 4, 8 |
| 509 | mtsp r21, sr0 |
| 510 | ble,n 0(sr0, r22) |
| 511 | nop ; To avoid kernel bugs |
| 512 | nop ; and keep the dummy 8 byte aligned |
| 513 | |
| 514 | The dummy decides if the target is in text space or data space. If |
| 515 | it's in data space, there's no problem because the target can |
| 516 | return back to the dummy. However, if the target is in text space, |
| 517 | the dummy calls the secret, undocumented routine _sr4export, which |
| 518 | calls a function in text space and can return to any space. Instead |
| 519 | of including fake instructions to represent saved registers, we |
| 520 | know that the frame is associated with the call dummy and treat it |
| 521 | specially. |
| 522 | |
| 523 | The trailing NOPs are needed to avoid a bug in HPUX, BSD and OSF1 |
| 524 | kernels. If the memory at the location pointed to by the PC is |
| 525 | 0xffffffff then a ptrace step call will fail (even if the instruction |
| 526 | is nullified). |
| 527 | |
| 528 | The code to pop a dummy frame single steps three instructions |
| 529 | starting with the last mtsp. This includes the nullified "instruction" |
| 530 | following the ble (which is uninitialized junk). If the |
| 531 | "instruction" following the last BLE is 0xffffffff, then the ptrace |
| 532 | will fail and the dummy frame is not correctly popped. |
| 533 | |
| 534 | By placing a NOP in the delay slot of the BLE instruction we can be |
| 535 | sure that we never try to execute a 0xffffffff instruction and |
| 536 | avoid the kernel bug. The second NOP is needed to keep the call |
| 537 | dummy 8 byte aligned. */ |
| 538 | |
| 539 | /* Define offsets into the call dummy for the target function address */ |
| 540 | #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 9) |
| 541 | #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 10) |
| 542 | |
| 543 | /* Define offsets into the call dummy for the _sr4export address */ |
| 544 | #define SR4EXPORT_LDIL_OFFSET (INSTRUCTION_SIZE * 12) |
| 545 | #define SR4EXPORT_LDO_OFFSET (INSTRUCTION_SIZE * 13) |
| 546 | |
| 547 | #define CALL_DUMMY {0x4BDA3FB9, 0x4BD93FB1, 0x4BD83FA9, 0x4BD73FA1,\ |
| 548 | 0x37C13FB9, 0x24201004, 0x2C391005, 0x24311006,\ |
| 549 | 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A4,\ |
| 550 | 0x20200000, 0x34210000, 0x002010b4, 0x82842022,\ |
| 551 | 0xe6c06000, 0x081f0242, 0x00010004, 0x00151820,\ |
| 552 | 0xe6c00002, 0xe4202000, 0x6bdf3fd1, 0x00010004,\ |
| 553 | 0x00151820, 0xe6c00002, 0x08000240, 0x08000240} |
| 554 | |
| 555 | #if !GDB_MULTI_ARCH |
| 556 | #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 28) |
| 557 | #endif |
| 558 | #define REG_PARM_STACK_SPACE 16 |
| 559 | |
| 560 | #else /* defined PA_LEVEL_0 */ |
| 561 | |
| 562 | /* FIXME: brobecker 2002-12-26. PA_LEVEL_0 is only defined for the |
| 563 | hppa-pro target, which should be obsoleted soon. The following |
| 564 | section will therefore not be included in the multiarch conversion. */ |
| 565 | /* This is the call dummy for a level 0 PA. Level 0's don't have space |
| 566 | registers (or floating point?), so we skip all that inter-space call stuff, |
| 567 | and avoid touching the fp regs. |
| 568 | |
| 569 | call_dummy |
| 570 | |
| 571 | ldw -36(%sp), %arg0 |
| 572 | ldw -40(%sp), %arg1 |
| 573 | ldw -44(%sp), %arg2 |
| 574 | ldw -48(%sp), %arg3 |
| 575 | ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here |
| 576 | ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here |
| 577 | ble 0(%sr0, %r31) |
| 578 | copy %r31, %r2 |
| 579 | break 4, 8 |
| 580 | nop ; restore_pc_queue expects these |
| 581 | bv,n 0(%r22) ; instructions to be here... |
| 582 | nop |
| 583 | */ |
| 584 | |
| 585 | /* Define offsets into the call dummy for the target function address */ |
| 586 | #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 4) |
| 587 | #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 5) |
| 588 | |
| 589 | #define CALL_DUMMY {0x4bda3fb9, 0x4bd93fb1, 0x4bd83fa9, 0x4bd73fa1,\ |
| 590 | 0x23e00000, 0x37ff0000, 0xe7e00000, 0x081f0242,\ |
| 591 | 0x00010004, 0x08000240, 0xeac0c002, 0x08000240} |
| 592 | |
| 593 | #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 12) |
| 594 | |
| 595 | #endif /* defined PA_LEVEL_0 */ |
| 596 | |
| 597 | #if !GDB_MULTI_ARCH |
| 598 | #define CALL_DUMMY_START_OFFSET 0 |
| 599 | #endif |
| 600 | |
| 601 | /* If we've reached a trap instruction within the call dummy, then |
| 602 | we'll consider that to mean that we've reached the call dummy's |
| 603 | end after its successful completion. */ |
| 604 | #define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \ |
| 605 | (DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \ |
| 606 | (read_memory_integer((pc), 4) == BREAKPOINT32)) |
| 607 | |
| 608 | /* |
| 609 | * Insert the specified number of args and function address |
| 610 | * into a call sequence of the above form stored at DUMMYNAME. |
| 611 | * |
| 612 | * On the hppa we need to call the stack dummy through $$dyncall. |
| 613 | * Therefore our version of FIX_CALL_DUMMY takes an extra argument, |
| 614 | * real_pc, which is the location where gdb should start up the |
| 615 | * inferior to do the function call. |
| 616 | */ |
| 617 | |
| 618 | /* FIXME: brobecker 2002-12-26. This macro is going to cause us some |
| 619 | problems before we can go to multiarch partial as it has been diverted |
| 620 | on HPUX to return the value of the PC! */ |
| 621 | #define FIX_CALL_DUMMY hppa_fix_call_dummy |
| 622 | extern CORE_ADDR hppa_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int, |
| 623 | struct value **, struct type *, int); |
| 624 | |
| 625 | #if !GDB_MULTI_ARCH |
| 626 | #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ |
| 627 | (hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) |
| 628 | extern CORE_ADDR |
| 629 | hppa_push_arguments (int, struct value **, CORE_ADDR, int, CORE_ADDR); |
| 630 | #endif |
| 631 | |
| 632 | \f |
| 633 | #if !GDB_MULTI_ARCH |
| 634 | extern CORE_ADDR hppa_smash_text_address (CORE_ADDR addr); |
| 635 | #define SMASH_TEXT_ADDRESS(addr) hppa_smash_text_address (addr) |
| 636 | #endif |
| 637 | |
| 638 | #define GDB_TARGET_IS_HPPA |
| 639 | |
| 640 | #if !GDB_MULTI_ARCH |
| 641 | #define BELIEVE_PCC_PROMOTION 1 |
| 642 | #endif |
| 643 | |
| 644 | /* |
| 645 | * Unwind table and descriptor. |
| 646 | */ |
| 647 | |
| 648 | struct unwind_table_entry |
| 649 | { |
| 650 | CORE_ADDR region_start; |
| 651 | CORE_ADDR region_end; |
| 652 | |
| 653 | unsigned int Cannot_unwind:1; /* 0 */ |
| 654 | unsigned int Millicode:1; /* 1 */ |
| 655 | unsigned int Millicode_save_sr0:1; /* 2 */ |
| 656 | unsigned int Region_description:2; /* 3..4 */ |
| 657 | unsigned int reserved1:1; /* 5 */ |
| 658 | unsigned int Entry_SR:1; /* 6 */ |
| 659 | unsigned int Entry_FR:4; /* number saved *//* 7..10 */ |
| 660 | unsigned int Entry_GR:5; /* number saved *//* 11..15 */ |
| 661 | unsigned int Args_stored:1; /* 16 */ |
| 662 | unsigned int Variable_Frame:1; /* 17 */ |
| 663 | unsigned int Separate_Package_Body:1; /* 18 */ |
| 664 | unsigned int Frame_Extension_Millicode:1; /* 19 */ |
| 665 | unsigned int Stack_Overflow_Check:1; /* 20 */ |
| 666 | unsigned int Two_Instruction_SP_Increment:1; /* 21 */ |
| 667 | unsigned int Ada_Region:1; /* 22 */ |
| 668 | unsigned int cxx_info:1; /* 23 */ |
| 669 | unsigned int cxx_try_catch:1; /* 24 */ |
| 670 | unsigned int sched_entry_seq:1; /* 25 */ |
| 671 | unsigned int reserved2:1; /* 26 */ |
| 672 | unsigned int Save_SP:1; /* 27 */ |
| 673 | unsigned int Save_RP:1; /* 28 */ |
| 674 | unsigned int Save_MRP_in_frame:1; /* 29 */ |
| 675 | unsigned int extn_ptr_defined:1; /* 30 */ |
| 676 | unsigned int Cleanup_defined:1; /* 31 */ |
| 677 | |
| 678 | unsigned int MPE_XL_interrupt_marker:1; /* 0 */ |
| 679 | unsigned int HP_UX_interrupt_marker:1; /* 1 */ |
| 680 | unsigned int Large_frame:1; /* 2 */ |
| 681 | unsigned int Pseudo_SP_Set:1; /* 3 */ |
| 682 | unsigned int reserved4:1; /* 4 */ |
| 683 | unsigned int Total_frame_size:27; /* 5..31 */ |
| 684 | |
| 685 | /* This is *NOT* part of an actual unwind_descriptor in an object |
| 686 | file. It is *ONLY* part of the "internalized" descriptors that |
| 687 | we create from those in a file. |
| 688 | */ |
| 689 | struct |
| 690 | { |
| 691 | unsigned int stub_type:4; /* 0..3 */ |
| 692 | unsigned int padding:28; /* 4..31 */ |
| 693 | } |
| 694 | stub_unwind; |
| 695 | }; |
| 696 | |
| 697 | /* HP linkers also generate unwinds for various linker-generated stubs. |
| 698 | GDB reads in the stubs from the $UNWIND_END$ subspace, then |
| 699 | "converts" them into normal unwind entries using some of the reserved |
| 700 | fields to store the stub type. */ |
| 701 | |
| 702 | struct stub_unwind_entry |
| 703 | { |
| 704 | /* The offset within the executable for the associated stub. */ |
| 705 | unsigned stub_offset; |
| 706 | |
| 707 | /* The type of stub this unwind entry describes. */ |
| 708 | char type; |
| 709 | |
| 710 | /* Unknown. Not needed by GDB at this time. */ |
| 711 | char prs_info; |
| 712 | |
| 713 | /* Length (in instructions) of the associated stub. */ |
| 714 | short stub_length; |
| 715 | }; |
| 716 | |
| 717 | /* Sizes (in bytes) of the native unwind entries. */ |
| 718 | #define UNWIND_ENTRY_SIZE 16 |
| 719 | #define STUB_UNWIND_ENTRY_SIZE 8 |
| 720 | |
| 721 | /* The gaps represent linker stubs used in MPE and space for future |
| 722 | expansion. */ |
| 723 | enum unwind_stub_types |
| 724 | { |
| 725 | LONG_BRANCH = 1, |
| 726 | PARAMETER_RELOCATION = 2, |
| 727 | EXPORT = 10, |
| 728 | IMPORT = 11, |
| 729 | IMPORT_SHLIB = 12, |
| 730 | }; |
| 731 | |
| 732 | /* We use the objfile->obj_private pointer for two things: |
| 733 | |
| 734 | * 1. An unwind table; |
| 735 | * |
| 736 | * 2. A pointer to any associated shared library object. |
| 737 | * |
| 738 | * #defines are used to help refer to these objects. |
| 739 | */ |
| 740 | |
| 741 | /* Info about the unwind table associated with an object file. |
| 742 | |
| 743 | * This is hung off of the "objfile->obj_private" pointer, and |
| 744 | * is allocated in the objfile's psymbol obstack. This allows |
| 745 | * us to have unique unwind info for each executable and shared |
| 746 | * library that we are debugging. |
| 747 | */ |
| 748 | struct obj_unwind_info |
| 749 | { |
| 750 | struct unwind_table_entry *table; /* Pointer to unwind info */ |
| 751 | struct unwind_table_entry *cache; /* Pointer to last entry we found */ |
| 752 | int last; /* Index of last entry */ |
| 753 | }; |
| 754 | |
| 755 | typedef struct obj_private_struct |
| 756 | { |
| 757 | struct obj_unwind_info *unwind_info; /* a pointer */ |
| 758 | struct so_list *so_info; /* a pointer */ |
| 759 | CORE_ADDR dp; |
| 760 | } |
| 761 | obj_private_data_t; |
| 762 | |
| 763 | #if 0 |
| 764 | extern void target_write_pc (CORE_ADDR, int); |
| 765 | extern CORE_ADDR target_read_pc (int); |
| 766 | extern CORE_ADDR skip_trampoline_code (CORE_ADDR, char *); |
| 767 | #endif |
| 768 | |
| 769 | #if !GDB_MULTI_ARCH |
| 770 | #define TARGET_READ_PC(pid) hppa_target_read_pc (pid) |
| 771 | extern CORE_ADDR hppa_target_read_pc (ptid_t); |
| 772 | #endif |
| 773 | |
| 774 | #if !GDB_MULTI_ARCH |
| 775 | #define TARGET_WRITE_PC(v,pid) hppa_target_write_pc (v,pid) |
| 776 | extern void hppa_target_write_pc (CORE_ADDR, ptid_t); |
| 777 | #endif |
| 778 | |
| 779 | #if !GDB_MULTI_ARCH |
| 780 | #define TARGET_READ_FP() hppa_target_read_fp () |
| 781 | extern CORE_ADDR hppa_target_read_fp (void); |
| 782 | #endif |
| 783 | |
| 784 | /* For a number of horrible reasons we may have to adjust the location |
| 785 | of variables on the stack. Ugh. */ |
| 786 | #define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR) |
| 787 | extern int hpread_adjust_stack_address (CORE_ADDR); |
| 788 | |
| 789 | /* If the current gcc for for this target does not produce correct debugging |
| 790 | information for float parameters, both prototyped and unprototyped, then |
| 791 | define this macro. This forces gdb to always assume that floats are |
| 792 | passed as doubles and then converted in the callee. */ |
| 793 | |
| 794 | #if !GDB_MULTI_ARCH |
| 795 | extern int hppa_coerce_float_to_double (struct type *formal, |
| 796 | struct type *actual); |
| 797 | #define COERCE_FLOAT_TO_DOUBLE(formal, actual) \ |
| 798 | hppa_coerce_float_to_double (formal, actual) |
| 799 | #endif |
| 800 | |
| 801 | /* Here's how to step off a permanent breakpoint. */ |
| 802 | #define SKIP_PERMANENT_BREAKPOINT (hppa_skip_permanent_breakpoint) |
| 803 | extern void hppa_skip_permanent_breakpoint (void); |
| 804 | |
| 805 | /* On HP-UX, certain system routines (millicode) have names beginning |
| 806 | with $ or $$, e.g. $$dyncall, which handles inter-space procedure |
| 807 | calls on PA-RISC. Tell the expression parser to check for those |
| 808 | when parsing tokens that begin with "$". */ |
| 809 | #define SYMBOLS_CAN_START_WITH_DOLLAR (1) |