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, 2001, 2002, 2003 Free Software Foundation, Inc.
5 Contributed by the Center for Software Science at the
6 University of Utah (pa-gdb-bugs@cs.utah.edu).
8 This file is part of GDB.
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.
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.
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. */
27 #define GDB_MULTI_ARCH 0
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))
35 /* Forward declarations of some types we use in prototypes */
38 struct frame_saved_regs
;
41 struct inferior_status
;
43 /* By default assume we don't have to worry about software floating point. */
48 /* Get at various relevent fields of an instruction word. */
52 #define MASK_14 0x3fff
53 #define MASK_21 0x1fffff
55 /* This macro gets bit fields using HP's numbering (MSB = 0) */
57 #define GET_FIELD(X, FROM, TO) \
58 ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
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)
66 /* Offset from address of function to start of its code.
67 Zero on most machines. */
70 #define FUNCTION_START_OFFSET 0
73 /* Advance PC across any function entry prologue instructions
74 to reach some "real" code. */
77 extern CORE_ADDR
hppa_skip_prologue (CORE_ADDR
);
78 #define SKIP_PROLOGUE(pc) (hppa_skip_prologue (pc))
81 /* If PC is in some function-call trampoline code, return the PC
82 where the function itself actually starts. If not, return NULL. */
85 #define SKIP_TRAMPOLINE_CODE(pc) hppa_skip_trampoline_code (pc)
86 extern CORE_ADDR
hppa_skip_trampoline_code (CORE_ADDR
);
89 /* Return non-zero if we are in an appropriate trampoline. */
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 *);
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 *);
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
*);
110 extern int hppa_inner_than (CORE_ADDR lhs
, CORE_ADDR rhs
);
111 #define INNER_THAN(lhs,rhs) hppa_inner_than(lhs,rhs)
115 extern CORE_ADDR
hppa_stack_align (CORE_ADDR sp
);
116 #define STACK_ALIGN(sp) hppa_stack_align (sp)
119 /* Sequence of bytes for breakpoint instruction. */
121 #define BREAKPOINT {0x00, 0x01, 0x00, 0x04}
122 #define BREAKPOINT32 0x10004
124 /* Amount PC must be decremented by after a breakpoint.
125 This is often the number of bytes in BREAKPOINT
128 Not on the PA-RISC */
131 #define DECR_PC_AFTER_BREAK 0
134 extern int hppa_pc_requires_run_before_use (CORE_ADDR pc
);
135 #define PC_REQUIRES_RUN_BEFORE_USE(pc) hppa_pc_requires_run_before_use (pc)
137 /* Say how long (ordinary) registers are. This is a piece of bogosity
138 used in push_word and a few other places; REGISTER_RAW_SIZE is the
139 real way to know how big a register is. */
142 #define REGISTER_SIZE 4
145 /* Number of machine registers */
151 /* Initializer for an array of names of registers.
152 There should be NUM_REGS strings in this initializer.
153 They are in rows of eight entries */
155 #define REGISTER_NAMES \
156 {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", \
157 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
158 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
159 "r24", "r25", "r26", "dp", "ret0", "ret1", "sp", "r31", \
160 "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", "eiem", "iir", "isr", \
161 "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", "sr3", \
162 "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", \
163 "cr13", "cr24", "cr25", "cr26", "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\
164 "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
165 "fr4", "fr4R", "fr5", "fr5R", "fr6", "fr6R", "fr7", "fr7R", \
166 "fr8", "fr8R", "fr9", "fr9R", "fr10", "fr10R", "fr11", "fr11R", \
167 "fr12", "fr12R", "fr13", "fr13R", "fr14", "fr14R", "fr15", "fr15R", \
168 "fr16", "fr16R", "fr17", "fr17R", "fr18", "fr18R", "fr19", "fr19R", \
169 "fr20", "fr20R", "fr21", "fr21R", "fr22", "fr22R", "fr23", "fr23R", \
170 "fr24", "fr24R", "fr25", "fr25R", "fr26", "fr26R", "fr27", "fr27R", \
171 "fr28", "fr28R", "fr29", "fr29R", "fr30", "fr30R", "fr31", "fr31R"}
173 /* Register numbers of various important registers.
174 Note that some of these values are "real" register numbers,
175 and correspond to the general registers of the machine,
176 and some are "phony" register numbers which are too large
177 to be actual register numbers as far as the user is concerned
178 but do serve to get the desired values when passed to read_register. */
180 #define R0_REGNUM 0 /* Doesn't actually exist, used as base for
181 other r registers. */
182 #define FLAGS_REGNUM 0 /* Various status flags */
183 #define RP_REGNUM 2 /* return pointer */
185 #define FP_REGNUM 3 /* Contains address of executing stack */
189 #define SP_REGNUM 30 /* Contains address of top of stack */
191 #define SAR_REGNUM 32 /* Shift Amount Register */
192 #define IPSW_REGNUM 41 /* Interrupt Processor Status Word */
193 #define PCOQ_HEAD_REGNUM 33 /* instruction offset queue head */
194 #define PCSQ_HEAD_REGNUM 34 /* instruction space queue head */
195 #define PCOQ_TAIL_REGNUM 35 /* instruction offset queue tail */
196 #define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */
197 #define EIEM_REGNUM 37 /* External Interrupt Enable Mask */
198 #define IIR_REGNUM 38 /* Interrupt Instruction Register */
199 #define IOR_REGNUM 40 /* Interrupt Offset Register */
200 #define SR4_REGNUM 43 /* space register 4 */
201 #define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
202 #define CCR_REGNUM 54 /* Coprocessor Configuration Register */
203 #define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
204 #define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
206 #define FP0_REGNUM 64 /* floating point reg. 0 (fspr) */
208 #define FP4_REGNUM 72
210 #define ARG0_REGNUM 26 /* The first argument of a callee. */
211 #define ARG1_REGNUM 25 /* The second argument of a callee. */
212 #define ARG2_REGNUM 24 /* The third argument of a callee. */
213 #define ARG3_REGNUM 23 /* The fourth argument of a callee. */
215 /* compatibility with the rest of gdb. */
217 #define PC_REGNUM PCOQ_HEAD_REGNUM
220 #define NPC_REGNUM PCOQ_TAIL_REGNUM
224 * Processor Status Word Masks
227 #define PSW_T 0x01000000 /* Taken Branch Trap Enable */
228 #define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */
229 #define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */
230 #define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */
231 #define PSW_X 0x00100000 /* Data Memory Break Disable */
232 #define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */
233 #define PSW_C 0x00040000 /* Code Address Translation Enable */
234 #define PSW_V 0x00020000 /* Divide Step Correction */
235 #define PSW_M 0x00010000 /* High-Priority Machine Check Disable */
236 #define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */
237 #define PSW_R 0x00000010 /* Recovery Counter Enable */
238 #define PSW_Q 0x00000008 /* Interruption State Collection Enable */
239 #define PSW_P 0x00000004 /* Protection ID Validation Enable */
240 #define PSW_D 0x00000002 /* Data Address Translation Enable */
241 #define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */
242 /* Machine Check Interruption Enable */
244 /* When fetching register values from an inferior or a core file,
245 clean them up using this macro. BUF is a char pointer to
246 the raw value of the register in the registers[] array. */
248 #define DEPRECATED_CLEAN_UP_REGISTER_VALUE(regno, buf) \
250 if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \
251 (buf)[sizeof(CORE_ADDR) -1] &= ~0x3; \
254 /* Define DEPRECATED_DO_REGISTERS_INFO() to do machine-specific
255 formatting of register dumps. */
257 #define DEPRECATED_DO_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp)
258 extern void pa_do_registers_info (int, int);
261 #define STRCAT_REGISTER(regnum, fpregs, stream, precision) pa_do_strcat_registers_info (regnum, fpregs, stream, precision)
262 extern void pa_do_strcat_registers_info (int, int, struct ui_file
*, enum precision_type
);
265 /* PA specific macro to see if the current instruction is nullified. */
266 #ifndef INSTRUCTION_NULLIFIED
267 extern int hppa_instruction_nullified (void);
268 #define INSTRUCTION_NULLIFIED hppa_instruction_nullified ()
271 /* Number of bytes of storage in the actual machine representation
272 for register N. On the PA-RISC, all regs are 4 bytes, including
273 the FP registers (they're accessed as two 4 byte halves). */
276 extern int hppa_register_raw_size (int reg_nr
);
277 #define REGISTER_RAW_SIZE(N) hppa_register_raw_size (N)
280 /* Total amount of space needed to store our copies of the machine's
281 register state, the array `registers'. */
283 #define REGISTER_BYTES (NUM_REGS * 4)
287 extern int hppa_register_byte (int reg_nr
);
288 #define REGISTER_BYTE(N) hppa_register_byte (N)
291 /* Number of bytes of storage in the program's representation
295 #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
298 /* Largest value REGISTER_RAW_SIZE can have. */
301 #define DEPRECATED_MAX_REGISTER_RAW_SIZE 4
304 /* Largest value REGISTER_VIRTUAL_SIZE can have. */
307 #define DEPRECATED_MAX_REGISTER_VIRTUAL_SIZE 8
311 extern struct type
* hppa_register_virtual_type (int reg_nr
);
312 #define REGISTER_VIRTUAL_TYPE(N) hppa_register_virtual_type (N)
316 extern void hppa_store_struct_return (CORE_ADDR addr
, CORE_ADDR sp
);
317 #define STORE_STRUCT_RETURN(ADDR, SP) hppa_store_struct_return (ADDR, SP)
320 /* Extract from an array REGBUF containing the (raw) register state
321 a function return value of type TYPE, and copy that, in virtual format,
325 void hppa_extract_return_value (struct type
*type
, char *regbuf
, char *valbuf
);
326 #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
327 hppa_extract_return_value (TYPE, REGBUF, VALBUF);
330 /* elz: decide whether the function returning a value of type type
331 will put it on the stack or in the registers.
332 The pa calling convention says that:
333 register 28 (called ret0 by gdb) contains any ASCII char,
334 and any non_floating point value up to 32-bits.
335 reg 28 and 29 contain non-floating point up tp 64 bits and larger
336 than 32 bits. (higer order word in reg 28).
337 fr4: floating point up to 64 bits
338 sr1: space identifier (32-bit)
339 stack: any lager than 64-bit, with the address in r28
342 extern use_struct_convention_fn hppa_use_struct_convention
;
343 #define USE_STRUCT_CONVENTION(gcc_p,type) hppa_use_struct_convention (gcc_p,type)
346 /* Write into appropriate registers a function return value
347 of type TYPE, given in virtual format. */
350 extern void hppa_store_return_value (struct type
*type
, char *valbuf
);
351 #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \
352 hppa_store_return_value (TYPE, VALBUF);
356 extern CORE_ADDR
hppa_extract_struct_value_address (char *regbuf
);
357 #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
358 hppa_extract_struct_value_address (REGBUF)
361 /* elz: Return a large value, which is stored on the stack at addr.
362 This is defined only for the hppa, at this moment. The above macro
363 DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS is not called anymore,
364 because it assumes that on exit from a called function which
365 returns a large structure on the stack, the address of the ret
366 structure is still in register 28. Unfortunately this register is
367 usually overwritten by the called function itself, on hppa. This is
368 specified in the calling convention doc. As far as I know, the only
369 way to get the return value is to have the caller tell us where it
370 told the callee to put it, rather than have the callee tell us. */
371 struct value
*hppa_value_returned_from_stack (register struct type
*valtype
,
373 #define VALUE_RETURNED_FROM_STACK(valtype,addr) \
374 hppa_value_returned_from_stack (valtype, addr)
377 extern int hppa_cannot_store_register (int regnum
);
378 #define CANNOT_STORE_REGISTER(regno) hppa_cannot_store_register (regno)
382 #define DEPRECATED_INIT_EXTRA_FRAME_INFO(fromleaf, frame) hppa_init_extra_frame_info (fromleaf, frame)
383 extern void hppa_init_extra_frame_info (int, struct frame_info
*);
386 /* Describe the pointer in each stack frame to the previous stack frame
389 /* DEPRECATED_FRAME_CHAIN takes a frame's nominal address and produces
390 the frame's chain-pointer. */
392 /* In the case of the PA-RISC, the frame's nominal address
393 is the address of a 4-byte word containing the calling frame's
394 address (previous FP). */
397 #define DEPRECATED_FRAME_CHAIN(thisframe) hppa_frame_chain (thisframe)
398 extern CORE_ADDR
hppa_frame_chain (struct frame_info
*);
402 extern int hppa_frame_chain_valid (CORE_ADDR
, struct frame_info
*);
403 #define DEPRECATED_FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe)
406 /* Define other aspects of the stack frame. */
408 /* A macro that tells us whether the function invocation represented
409 by FI does not have a frame on the stack associated with it. If it
410 does not, FRAMELESS is set to 1, else 0. */
412 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
413 (hppa_frameless_function_invocation (FI))
414 extern int hppa_frameless_function_invocation (struct frame_info
*);
418 extern CORE_ADDR
hppa_frame_saved_pc (struct frame_info
*frame
);
419 #define DEPRECATED_FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME)
423 extern CORE_ADDR
hppa_frame_args_address (struct frame_info
*fi
);
424 #define FRAME_ARGS_ADDRESS(fi) hppa_frame_args_address (fi)
428 extern CORE_ADDR
hppa_frame_locals_address (struct frame_info
*fi
);
429 #define FRAME_LOCALS_ADDRESS(fi) hppa_frame_locals_address (fi)
433 extern int hppa_frame_num_args (struct frame_info
*frame
);
434 #define FRAME_NUM_ARGS(fi) hppa_frame_num_args (fi)
438 #define FRAME_ARGS_SKIP 0
441 #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
442 hppa_frame_find_saved_regs (frame_info, &frame_saved_regs)
443 extern void hppa_frame_find_saved_regs (struct frame_info
*,
444 struct frame_saved_regs
*);
447 /* Things needed for making the inferior call functions. */
450 #define DEPRECATED_PUSH_DUMMY_FRAME hppa_push_dummy_frame ()
451 extern void hppa_push_dummy_frame (void);
454 /* Discard from the stack the innermost frame,
455 restoring all saved registers. */
457 #define DEPRECATED_POP_FRAME hppa_pop_frame ()
458 extern void hppa_pop_frame (void);
461 #define INSTRUCTION_SIZE 4
465 /* Non-level zero PA's have space registers (but they don't always have
466 floating-point, do they???? */
468 /* This sequence of words is the instructions
470 ; Call stack frame has already been built by gdb. Since we could be calling
471 ; a varargs function, and we do not have the benefit of a stub to put things in
472 ; the right place, we load the first 4 word of arguments into both the general
483 fldds -12(0, r1), fr7
484 ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
485 ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
487 ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
488 ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
490 combt,=,n r4, r20, text_space ; If target is in data space, do a
491 ble 0(sr5, r22) ; "normal" procedure call
496 text_space ; Otherwise, go through _sr4export,
497 ble (sr4, r1) ; which will return back here.
502 nop ; To avoid kernel bugs
503 nop ; and keep the dummy 8 byte aligned
505 The dummy decides if the target is in text space or data space. If
506 it's in data space, there's no problem because the target can
507 return back to the dummy. However, if the target is in text space,
508 the dummy calls the secret, undocumented routine _sr4export, which
509 calls a function in text space and can return to any space. Instead
510 of including fake instructions to represent saved registers, we
511 know that the frame is associated with the call dummy and treat it
514 The trailing NOPs are needed to avoid a bug in HPUX, BSD and OSF1
515 kernels. If the memory at the location pointed to by the PC is
516 0xffffffff then a ptrace step call will fail (even if the instruction
519 The code to pop a dummy frame single steps three instructions
520 starting with the last mtsp. This includes the nullified "instruction"
521 following the ble (which is uninitialized junk). If the
522 "instruction" following the last BLE is 0xffffffff, then the ptrace
523 will fail and the dummy frame is not correctly popped.
525 By placing a NOP in the delay slot of the BLE instruction we can be
526 sure that we never try to execute a 0xffffffff instruction and
527 avoid the kernel bug. The second NOP is needed to keep the call
528 dummy 8 byte aligned. */
530 /* Define offsets into the call dummy for the target function address */
531 #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 9)
532 #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 10)
534 /* Define offsets into the call dummy for the _sr4export address */
535 #define SR4EXPORT_LDIL_OFFSET (INSTRUCTION_SIZE * 12)
536 #define SR4EXPORT_LDO_OFFSET (INSTRUCTION_SIZE * 13)
538 #define CALL_DUMMY {0x4BDA3FB9, 0x4BD93FB1, 0x4BD83FA9, 0x4BD73FA1,\
539 0x37C13FB9, 0x24201004, 0x2C391005, 0x24311006,\
540 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A4,\
541 0x20200000, 0x34210000, 0x002010b4, 0x82842022,\
542 0xe6c06000, 0x081f0242, 0x00010004, 0x00151820,\
543 0xe6c00002, 0xe4202000, 0x6bdf3fd1, 0x00010004,\
544 0x00151820, 0xe6c00002, 0x08000240, 0x08000240}
547 #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 28)
549 #define REG_PARM_STACK_SPACE 16
551 #else /* defined PA_LEVEL_0 */
553 /* FIXME: brobecker 2002-12-26. PA_LEVEL_0 is only defined for the
554 hppa-pro target, which should be obsoleted soon. The following
555 section will therefore not be included in the multiarch conversion. */
556 /* This is the call dummy for a level 0 PA. Level 0's don't have space
557 registers (or floating point?), so we skip all that inter-space call stuff,
558 and avoid touching the fp regs.
566 ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here
567 ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here
571 nop ; restore_pc_queue expects these
572 bv,n 0(%r22) ; instructions to be here...
576 /* Define offsets into the call dummy for the target function address */
577 #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 4)
578 #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 5)
580 #define CALL_DUMMY {0x4bda3fb9, 0x4bd93fb1, 0x4bd83fa9, 0x4bd73fa1,\
581 0x23e00000, 0x37ff0000, 0xe7e00000, 0x081f0242,\
582 0x00010004, 0x08000240, 0xeac0c002, 0x08000240}
584 #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 12)
586 #endif /* defined PA_LEVEL_0 */
589 #define CALL_DUMMY_START_OFFSET 0
592 /* If we've reached a trap instruction within the call dummy, then
593 we'll consider that to mean that we've reached the call dummy's
594 end after its successful completion. */
595 #define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
596 (DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \
597 (read_memory_integer((pc), 4) == BREAKPOINT32))
600 * Insert the specified number of args and function address
601 * into a call sequence of the above form stored at DUMMYNAME.
603 * On the hppa we need to call the stack dummy through $$dyncall.
604 * Therefore our version of FIX_CALL_DUMMY takes an extra argument,
605 * real_pc, which is the location where gdb should start up the
606 * inferior to do the function call.
609 /* FIXME: brobecker 2002-12-26. This macro is going to cause us some
610 problems before we can go to multiarch partial as it has been diverted
611 on HPUX to return the value of the PC! */
612 #define FIX_CALL_DUMMY hppa_fix_call_dummy
613 extern CORE_ADDR
hppa_fix_call_dummy (char *, CORE_ADDR
, CORE_ADDR
, int,
614 struct value
**, struct type
*, int);
617 #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
618 (hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
619 extern CORE_ADDR
hppa_push_arguments (int, struct value
**, CORE_ADDR
, int,
625 extern CORE_ADDR
hppa_smash_text_address (CORE_ADDR addr
);
626 #define SMASH_TEXT_ADDRESS(addr) hppa_smash_text_address (addr)
629 #define GDB_TARGET_IS_HPPA
632 #define BELIEVE_PCC_PROMOTION 1
636 * Unwind table and descriptor.
639 struct unwind_table_entry
641 CORE_ADDR region_start
;
642 CORE_ADDR region_end
;
644 unsigned int Cannot_unwind
:1; /* 0 */
645 unsigned int Millicode
:1; /* 1 */
646 unsigned int Millicode_save_sr0
:1; /* 2 */
647 unsigned int Region_description
:2; /* 3..4 */
648 unsigned int reserved1
:1; /* 5 */
649 unsigned int Entry_SR
:1; /* 6 */
650 unsigned int Entry_FR
:4; /* number saved *//* 7..10 */
651 unsigned int Entry_GR
:5; /* number saved *//* 11..15 */
652 unsigned int Args_stored
:1; /* 16 */
653 unsigned int Variable_Frame
:1; /* 17 */
654 unsigned int Separate_Package_Body
:1; /* 18 */
655 unsigned int Frame_Extension_Millicode
:1; /* 19 */
656 unsigned int Stack_Overflow_Check
:1; /* 20 */
657 unsigned int Two_Instruction_SP_Increment
:1; /* 21 */
658 unsigned int Ada_Region
:1; /* 22 */
659 unsigned int cxx_info
:1; /* 23 */
660 unsigned int cxx_try_catch
:1; /* 24 */
661 unsigned int sched_entry_seq
:1; /* 25 */
662 unsigned int reserved2
:1; /* 26 */
663 unsigned int Save_SP
:1; /* 27 */
664 unsigned int Save_RP
:1; /* 28 */
665 unsigned int Save_MRP_in_frame
:1; /* 29 */
666 unsigned int extn_ptr_defined
:1; /* 30 */
667 unsigned int Cleanup_defined
:1; /* 31 */
669 unsigned int MPE_XL_interrupt_marker
:1; /* 0 */
670 unsigned int HP_UX_interrupt_marker
:1; /* 1 */
671 unsigned int Large_frame
:1; /* 2 */
672 unsigned int Pseudo_SP_Set
:1; /* 3 */
673 unsigned int reserved4
:1; /* 4 */
674 unsigned int Total_frame_size
:27; /* 5..31 */
676 /* This is *NOT* part of an actual unwind_descriptor in an object
677 file. It is *ONLY* part of the "internalized" descriptors that
678 we create from those in a file.
682 unsigned int stub_type
:4; /* 0..3 */
683 unsigned int padding
:28; /* 4..31 */
688 /* HP linkers also generate unwinds for various linker-generated stubs.
689 GDB reads in the stubs from the $UNWIND_END$ subspace, then
690 "converts" them into normal unwind entries using some of the reserved
691 fields to store the stub type. */
693 struct stub_unwind_entry
695 /* The offset within the executable for the associated stub. */
696 unsigned stub_offset
;
698 /* The type of stub this unwind entry describes. */
701 /* Unknown. Not needed by GDB at this time. */
704 /* Length (in instructions) of the associated stub. */
708 /* Sizes (in bytes) of the native unwind entries. */
709 #define UNWIND_ENTRY_SIZE 16
710 #define STUB_UNWIND_ENTRY_SIZE 8
712 /* The gaps represent linker stubs used in MPE and space for future
714 enum unwind_stub_types
717 PARAMETER_RELOCATION
= 2,
723 /* We use the objfile->obj_private pointer for two things:
725 * 1. An unwind table;
727 * 2. A pointer to any associated shared library object.
729 * #defines are used to help refer to these objects.
732 /* Info about the unwind table associated with an object file.
734 * This is hung off of the "objfile->obj_private" pointer, and
735 * is allocated in the objfile's psymbol obstack. This allows
736 * us to have unique unwind info for each executable and shared
737 * library that we are debugging.
739 struct obj_unwind_info
741 struct unwind_table_entry
*table
; /* Pointer to unwind info */
742 struct unwind_table_entry
*cache
; /* Pointer to last entry we found */
743 int last
; /* Index of last entry */
746 typedef struct obj_private_struct
748 struct obj_unwind_info
*unwind_info
; /* a pointer */
749 struct so_list
*so_info
; /* a pointer */
755 extern void target_write_pc (CORE_ADDR
, int);
756 extern CORE_ADDR
target_read_pc (int);
757 extern CORE_ADDR
skip_trampoline_code (CORE_ADDR
, char *);
761 #define TARGET_READ_PC(pid) hppa_target_read_pc (pid)
762 extern CORE_ADDR
hppa_target_read_pc (ptid_t
);
766 #define TARGET_WRITE_PC(v,pid) hppa_target_write_pc (v,pid)
767 extern void hppa_target_write_pc (CORE_ADDR
, ptid_t
);
771 #define TARGET_READ_FP() hppa_target_read_fp ()
772 extern CORE_ADDR
hppa_target_read_fp (void);
775 /* For a number of horrible reasons we may have to adjust the location
776 of variables on the stack. Ugh. */
777 #define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
778 extern int hpread_adjust_stack_address (CORE_ADDR
);
780 /* Here's how to step off a permanent breakpoint. */
781 #define SKIP_PERMANENT_BREAKPOINT (hppa_skip_permanent_breakpoint)
782 extern void hppa_skip_permanent_breakpoint (void);
784 /* On HP-UX, certain system routines (millicode) have names beginning
785 with $ or $$, e.g. $$dyncall, which handles inter-space procedure
786 calls on PA-RISC. Tell the expression parser to check for those
787 when parsing tokens that begin with "$". */
788 #define SYMBOLS_CAN_START_WITH_DOLLAR (1)