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.
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 /* Forward declarations of some types we use in prototypes */
32 struct frame_saved_regs
;
35 struct inferior_status
;
37 /* By default assume we don't have to worry about software floating point. */
42 /* Get at various relevent fields of an instruction word. */
46 #define MASK_14 0x3fff
47 #define MASK_21 0x1fffff
49 /* This macro gets bit fields using HP's numbering (MSB = 0) */
51 #define GET_FIELD(X, FROM, TO) \
52 ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
55 extern int hppa_reg_struct_has_addr (int gcc_p
, struct type
*type
);
56 #define REG_STRUCT_HAS_ADDR(gcc_p,type) hppa_reg_struct_has_addr (gcc_p,type)
58 /* Offset from address of function to start of its code.
59 Zero on most machines. */
61 #define FUNCTION_START_OFFSET 0
63 /* Advance PC across any function entry prologue instructions
64 to reach some "real" code. */
66 extern CORE_ADDR
hppa_skip_prologue (CORE_ADDR
);
67 #define SKIP_PROLOGUE(pc) (hppa_skip_prologue (pc))
69 /* If PC is in some function-call trampoline code, return the PC
70 where the function itself actually starts. If not, return NULL. */
72 #define SKIP_TRAMPOLINE_CODE(pc) skip_trampoline_code (pc, NULL)
73 extern CORE_ADDR
skip_trampoline_code (CORE_ADDR
, char *);
75 /* Return non-zero if we are in an appropriate trampoline. */
77 #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
78 in_solib_call_trampoline (pc, name)
79 extern int in_solib_call_trampoline (CORE_ADDR
, char *);
81 #define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \
82 in_solib_return_trampoline (pc, name)
83 extern int in_solib_return_trampoline (CORE_ADDR
, char *);
85 #undef SAVED_PC_AFTER_CALL
86 #define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call (frame)
87 extern CORE_ADDR
saved_pc_after_call (struct frame_info
*);
89 extern int hppa_inner_than (CORE_ADDR lhs
, CORE_ADDR rhs
);
90 #define INNER_THAN(lhs,rhs) hppa_inner_than(lhs,rhs)
92 extern CORE_ADDR
hppa_stack_align (CORE_ADDR sp
);
93 #define STACK_ALIGN(sp) hppa_stack_align (sp)
95 #define EXTRA_STACK_ALIGNMENT_NEEDED 0
97 /* Sequence of bytes for breakpoint instruction. */
99 #define BREAKPOINT {0x00, 0x01, 0x00, 0x04}
100 #define BREAKPOINT32 0x10004
102 /* Amount PC must be decremented by after a breakpoint.
103 This is often the number of bytes in BREAKPOINT
106 Not on the PA-RISC */
108 #define DECR_PC_AFTER_BREAK 0
110 extern int hppa_pc_requires_run_before_use (CORE_ADDR pc
);
111 #define PC_REQUIRES_RUN_BEFORE_USE(pc) hppa_pc_requires_run_before_use (pc)
113 /* Say how long (ordinary) registers are. This is a piece of bogosity
114 used in push_word and a few other places; REGISTER_RAW_SIZE is the
115 real way to know how big a register is. */
117 #define REGISTER_SIZE 4
119 /* Number of machine registers */
123 /* Initializer for an array of names of registers.
124 There should be NUM_REGS strings in this initializer.
125 They are in rows of eight entries */
127 #define REGISTER_NAMES \
128 {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", \
129 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
130 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
131 "r24", "r25", "r26", "dp", "ret0", "ret1", "sp", "r31", \
132 "sar", "pcoqh", "pcsqh", "pcoqt", "pcsqt", "eiem", "iir", "isr", \
133 "ior", "ipsw", "goto", "sr4", "sr0", "sr1", "sr2", "sr3", \
134 "sr5", "sr6", "sr7", "cr0", "cr8", "cr9", "ccr", "cr12", \
135 "cr13", "cr24", "cr25", "cr26", "mpsfu_high","mpsfu_low","mpsfu_ovflo","pad",\
136 "fpsr", "fpe1", "fpe2", "fpe3", "fpe4", "fpe5", "fpe6", "fpe7", \
137 "fr4", "fr4R", "fr5", "fr5R", "fr6", "fr6R", "fr7", "fr7R", \
138 "fr8", "fr8R", "fr9", "fr9R", "fr10", "fr10R", "fr11", "fr11R", \
139 "fr12", "fr12R", "fr13", "fr13R", "fr14", "fr14R", "fr15", "fr15R", \
140 "fr16", "fr16R", "fr17", "fr17R", "fr18", "fr18R", "fr19", "fr19R", \
141 "fr20", "fr20R", "fr21", "fr21R", "fr22", "fr22R", "fr23", "fr23R", \
142 "fr24", "fr24R", "fr25", "fr25R", "fr26", "fr26R", "fr27", "fr27R", \
143 "fr28", "fr28R", "fr29", "fr29R", "fr30", "fr30R", "fr31", "fr31R"}
145 /* Register numbers of various important registers.
146 Note that some of these values are "real" register numbers,
147 and correspond to the general registers of the machine,
148 and some are "phony" register numbers which are too large
149 to be actual register numbers as far as the user is concerned
150 but do serve to get the desired values when passed to read_register. */
152 #define R0_REGNUM 0 /* Doesn't actually exist, used as base for
153 other r registers. */
154 #define FLAGS_REGNUM 0 /* Various status flags */
155 #define RP_REGNUM 2 /* return pointer */
156 #define FP_REGNUM 3 /* Contains address of executing stack */
158 #define SP_REGNUM 30 /* Contains address of top of stack */
159 #define SAR_REGNUM 32 /* Shift Amount Register */
160 #define IPSW_REGNUM 41 /* Interrupt Processor Status Word */
161 #define PCOQ_HEAD_REGNUM 33 /* instruction offset queue head */
162 #define PCSQ_HEAD_REGNUM 34 /* instruction space queue head */
163 #define PCOQ_TAIL_REGNUM 35 /* instruction offset queue tail */
164 #define PCSQ_TAIL_REGNUM 36 /* instruction space queue tail */
165 #define EIEM_REGNUM 37 /* External Interrupt Enable Mask */
166 #define IIR_REGNUM 38 /* Interrupt Instruction Register */
167 #define IOR_REGNUM 40 /* Interrupt Offset Register */
168 #define SR4_REGNUM 43 /* space register 4 */
169 #define RCR_REGNUM 51 /* Recover Counter (also known as cr0) */
170 #define CCR_REGNUM 54 /* Coprocessor Configuration Register */
171 #define TR0_REGNUM 57 /* Temporary Registers (cr24 -> cr31) */
172 #define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */
173 #define FP0_REGNUM 64 /* floating point reg. 0 (fspr) */
174 #define FP4_REGNUM 72
176 #define ARG0_REGNUM 26 /* The first argument of a callee. */
177 #define ARG1_REGNUM 25 /* The second argument of a callee. */
178 #define ARG2_REGNUM 24 /* The third argument of a callee. */
179 #define ARG3_REGNUM 23 /* The fourth argument of a callee. */
181 /* compatibility with the rest of gdb. */
182 #define PC_REGNUM PCOQ_HEAD_REGNUM
183 #define NPC_REGNUM PCOQ_TAIL_REGNUM
186 * Processor Status Word Masks
189 #define PSW_T 0x01000000 /* Taken Branch Trap Enable */
190 #define PSW_H 0x00800000 /* Higher-Privilege Transfer Trap Enable */
191 #define PSW_L 0x00400000 /* Lower-Privilege Transfer Trap Enable */
192 #define PSW_N 0x00200000 /* PC Queue Front Instruction Nullified */
193 #define PSW_X 0x00100000 /* Data Memory Break Disable */
194 #define PSW_B 0x00080000 /* Taken Branch in Previous Cycle */
195 #define PSW_C 0x00040000 /* Code Address Translation Enable */
196 #define PSW_V 0x00020000 /* Divide Step Correction */
197 #define PSW_M 0x00010000 /* High-Priority Machine Check Disable */
198 #define PSW_CB 0x0000ff00 /* Carry/Borrow Bits */
199 #define PSW_R 0x00000010 /* Recovery Counter Enable */
200 #define PSW_Q 0x00000008 /* Interruption State Collection Enable */
201 #define PSW_P 0x00000004 /* Protection ID Validation Enable */
202 #define PSW_D 0x00000002 /* Data Address Translation Enable */
203 #define PSW_I 0x00000001 /* External, Power Failure, Low-Priority */
204 /* Machine Check Interruption Enable */
206 /* When fetching register values from an inferior or a core file,
207 clean them up using this macro. BUF is a char pointer to
208 the raw value of the register in the registers[] array. */
210 #define DEPRECATED_CLEAN_UP_REGISTER_VALUE(regno, buf) \
212 if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \
213 (buf)[sizeof(CORE_ADDR) -1] &= ~0x3; \
216 /* Define DEPRECATED_REGISTERS_INFO() to do machine-specific formatting
217 of register dumps. */
219 #define DEPRECATED_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp)
220 extern void pa_do_registers_info (int, int);
223 #define STRCAT_REGISTER(regnum, fpregs, stream, precision) pa_do_strcat_registers_info (regnum, fpregs, stream, precision)
224 extern void pa_do_strcat_registers_info (int, int, struct ui_file
*, enum precision_type
);
227 /* PA specific macro to see if the current instruction is nullified. */
228 #ifndef INSTRUCTION_NULLIFIED
229 extern int hppa_instruction_nullified (void);
230 #define INSTRUCTION_NULLIFIED hppa_instruction_nullified ()
233 /* Number of bytes of storage in the actual machine representation
234 for register N. On the PA-RISC, all regs are 4 bytes, including
235 the FP registers (they're accessed as two 4 byte halves). */
237 #define REGISTER_RAW_SIZE(N) 4
239 /* Total amount of space needed to store our copies of the machine's
240 register state, the array `registers'. */
241 #define REGISTER_BYTES (NUM_REGS * 4)
243 extern int hppa_register_byte (int reg_nr
);
244 #define REGISTER_BYTE(N) hppa_register_byte (N)
246 /* Number of bytes of storage in the program's representation
249 #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
251 /* Largest value REGISTER_RAW_SIZE can have. */
253 #define MAX_REGISTER_RAW_SIZE 4
255 /* Largest value REGISTER_VIRTUAL_SIZE can have. */
257 #define MAX_REGISTER_VIRTUAL_SIZE 8
259 extern struct type
* hppa_register_virtual_type (int reg_nr
);
260 #define REGISTER_VIRTUAL_TYPE(N) hppa_register_virtual_type (N)
262 extern void hppa_store_struct_return (CORE_ADDR addr
, CORE_ADDR sp
);
263 #define STORE_STRUCT_RETURN(ADDR, SP) hppa_store_struct_return (ADDR, SP)
265 /* Extract from an array REGBUF containing the (raw) register state
266 a function return value of type TYPE, and copy that, in virtual format,
269 void hppa_extract_return_value (struct type
*type
, char *regbuf
, char *valbuf
);
270 #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
271 hppa_extract_return_value (TYPE, REGBUF, VALBUF);
273 /* elz: decide whether the function returning a value of type type
274 will put it on the stack or in the registers.
275 The pa calling convention says that:
276 register 28 (called ret0 by gdb) contains any ASCII char,
277 and any non_floating point value up to 32-bits.
278 reg 28 and 29 contain non-floating point up tp 64 bits and larger
279 than 32 bits. (higer order word in reg 28).
280 fr4: floating point up to 64 bits
281 sr1: space identifier (32-bit)
282 stack: any lager than 64-bit, with the address in r28
284 extern use_struct_convention_fn hppa_use_struct_convention
;
285 #define USE_STRUCT_CONVENTION(gcc_p,type) hppa_use_struct_convention (gcc_p,type)
287 /* Write into appropriate registers a function return value
288 of type TYPE, given in virtual format. */
291 extern void hppa_store_return_value (struct type
*type
, char *valbuf
);
292 #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \
293 hppa_store_return_value (TYPE, VALBUF);
295 /* Extract from an array REGBUF containing the (raw) register state
296 the address in which a function should return its structure value,
297 as a CORE_ADDR (or an expression that can be used as one). */
299 #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
300 (*(int *)((REGBUF) + REGISTER_BYTE (28)))
302 /* elz: Return a large value, which is stored on the stack at addr.
303 This is defined only for the hppa, at this moment. The above macro
304 DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS is not called anymore,
305 because it assumes that on exit from a called function which
306 returns a large structure on the stack, the address of the ret
307 structure is still in register 28. Unfortunately this register is
308 usually overwritten by the called function itself, on hppa. This is
309 specified in the calling convention doc. As far as I know, the only
310 way to get the return value is to have the caller tell us where it
311 told the callee to put it, rather than have the callee tell us. */
312 struct value
*hppa_value_returned_from_stack (register struct type
*valtype
,
314 #define VALUE_RETURNED_FROM_STACK(valtype,addr) \
315 hppa_value_returned_from_stack (valtype, addr)
317 extern int hppa_cannot_store_register (int regnum
);
318 #define CANNOT_STORE_REGISTER(regno) hppa_cannot_store_register (regno)
320 #define INIT_EXTRA_FRAME_INFO(fromleaf, frame) init_extra_frame_info (fromleaf, frame)
321 extern void init_extra_frame_info (int, struct frame_info
*);
323 /* Describe the pointer in each stack frame to the previous stack frame
326 /* FRAME_CHAIN takes a frame's nominal address and produces the
327 frame's chain-pointer. */
329 /* In the case of the PA-RISC, the frame's nominal address
330 is the address of a 4-byte word containing the calling frame's
331 address (previous FP). */
333 #define FRAME_CHAIN(thisframe) frame_chain (thisframe)
334 extern CORE_ADDR
frame_chain (struct frame_info
*);
336 extern int hppa_frame_chain_valid (CORE_ADDR
, struct frame_info
*);
337 #define FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe)
339 /* Define other aspects of the stack frame. */
341 /* A macro that tells us whether the function invocation represented
342 by FI does not have a frame on the stack associated with it. If it
343 does not, FRAMELESS is set to 1, else 0. */
344 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
345 (frameless_function_invocation (FI))
346 extern int frameless_function_invocation (struct frame_info
*);
348 extern CORE_ADDR
hppa_frame_saved_pc (struct frame_info
*frame
);
349 #define FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME)
351 extern CORE_ADDR
hppa_frame_args_address (struct frame_info
*fi
);
352 #define FRAME_ARGS_ADDRESS(fi) hppa_frame_args_address (fi)
354 extern CORE_ADDR
hppa_frame_locals_address (struct frame_info
*fi
);
355 #define FRAME_LOCALS_ADDRESS(fi) hppa_frame_locals_address (fi)
357 /* Set VAL to the number of args passed to frame described by FI.
358 Can set VAL to -1, meaning no way to tell. */
360 /* We can't tell how many args there are
361 now that the C compiler delays popping them. */
362 #define FRAME_NUM_ARGS(fi) (-1)
364 /* Return number of bytes at start of arglist that are not really args. */
366 #define FRAME_ARGS_SKIP 0
368 #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
369 hppa_frame_find_saved_regs (frame_info, &frame_saved_regs)
371 hppa_frame_find_saved_regs (struct frame_info
*, struct frame_saved_regs
*);
374 /* Things needed for making the inferior call functions. */
376 /* Push an empty stack frame, to record the current PC, etc. */
378 #define PUSH_DUMMY_FRAME push_dummy_frame (inf_status)
379 extern void push_dummy_frame (struct inferior_status
*);
381 /* Discard from the stack the innermost frame,
382 restoring all saved registers. */
383 #define POP_FRAME hppa_pop_frame ()
384 extern void hppa_pop_frame (void);
386 #define INSTRUCTION_SIZE 4
390 /* Non-level zero PA's have space registers (but they don't always have
391 floating-point, do they???? */
393 /* This sequence of words is the instructions
395 ; Call stack frame has already been built by gdb. Since we could be calling
396 ; a varargs function, and we do not have the benefit of a stub to put things in
397 ; the right place, we load the first 4 word of arguments into both the general
408 fldds -12(0, r1), fr7
409 ldil 0, r22 ; FUNC_LDIL_OFFSET must point here
410 ldo 0(r22), r22 ; FUNC_LDO_OFFSET must point here
412 ldil 0, r1 ; SR4EXPORT_LDIL_OFFSET must point here
413 ldo 0(r1), r1 ; SR4EXPORT_LDO_OFFSET must point here
415 combt,=,n r4, r20, text_space ; If target is in data space, do a
416 ble 0(sr5, r22) ; "normal" procedure call
421 text_space ; Otherwise, go through _sr4export,
422 ble (sr4, r1) ; which will return back here.
427 nop ; To avoid kernel bugs
428 nop ; and keep the dummy 8 byte aligned
430 The dummy decides if the target is in text space or data space. If
431 it's in data space, there's no problem because the target can
432 return back to the dummy. However, if the target is in text space,
433 the dummy calls the secret, undocumented routine _sr4export, which
434 calls a function in text space and can return to any space. Instead
435 of including fake instructions to represent saved registers, we
436 know that the frame is associated with the call dummy and treat it
439 The trailing NOPs are needed to avoid a bug in HPUX, BSD and OSF1
440 kernels. If the memory at the location pointed to by the PC is
441 0xffffffff then a ptrace step call will fail (even if the instruction
444 The code to pop a dummy frame single steps three instructions
445 starting with the last mtsp. This includes the nullified "instruction"
446 following the ble (which is uninitialized junk). If the
447 "instruction" following the last BLE is 0xffffffff, then the ptrace
448 will fail and the dummy frame is not correctly popped.
450 By placing a NOP in the delay slot of the BLE instruction we can be
451 sure that we never try to execute a 0xffffffff instruction and
452 avoid the kernel bug. The second NOP is needed to keep the call
453 dummy 8 byte aligned. */
455 /* Define offsets into the call dummy for the target function address */
456 #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 9)
457 #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 10)
459 /* Define offsets into the call dummy for the _sr4export address */
460 #define SR4EXPORT_LDIL_OFFSET (INSTRUCTION_SIZE * 12)
461 #define SR4EXPORT_LDO_OFFSET (INSTRUCTION_SIZE * 13)
463 #define CALL_DUMMY {0x4BDA3FB9, 0x4BD93FB1, 0x4BD83FA9, 0x4BD73FA1,\
464 0x37C13FB9, 0x24201004, 0x2C391005, 0x24311006,\
465 0x2C291007, 0x22C00000, 0x36D60000, 0x02C010A4,\
466 0x20200000, 0x34210000, 0x002010b4, 0x82842022,\
467 0xe6c06000, 0x081f0242, 0x00010004, 0x00151820,\
468 0xe6c00002, 0xe4202000, 0x6bdf3fd1, 0x00010004,\
469 0x00151820, 0xe6c00002, 0x08000240, 0x08000240}
471 #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 28)
472 #define REG_PARM_STACK_SPACE 16
474 #else /* defined PA_LEVEL_0 */
476 /* This is the call dummy for a level 0 PA. Level 0's don't have space
477 registers (or floating point?), so we skip all that inter-space call stuff,
478 and avoid touching the fp regs.
486 ldil 0, %r31 ; FUNC_LDIL_OFFSET must point here
487 ldo 0(%r31), %r31 ; FUNC_LDO_OFFSET must point here
491 nop ; restore_pc_queue expects these
492 bv,n 0(%r22) ; instructions to be here...
496 /* Define offsets into the call dummy for the target function address */
497 #define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 4)
498 #define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 5)
500 #define CALL_DUMMY {0x4bda3fb9, 0x4bd93fb1, 0x4bd83fa9, 0x4bd73fa1,\
501 0x23e00000, 0x37ff0000, 0xe7e00000, 0x081f0242,\
502 0x00010004, 0x08000240, 0xeac0c002, 0x08000240}
504 #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 12)
508 #define CALL_DUMMY_START_OFFSET 0
510 /* If we've reached a trap instruction within the call dummy, then
511 we'll consider that to mean that we've reached the call dummy's
512 end after its successful completion. */
513 #define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
514 (PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \
515 (read_memory_integer((pc), 4) == BREAKPOINT32))
518 * Insert the specified number of args and function address
519 * into a call sequence of the above form stored at DUMMYNAME.
521 * On the hppa we need to call the stack dummy through $$dyncall.
522 * Therefore our version of FIX_CALL_DUMMY takes an extra argument,
523 * real_pc, which is the location where gdb should start up the
524 * inferior to do the function call.
527 #define FIX_CALL_DUMMY hppa_fix_call_dummy
530 hppa_fix_call_dummy (char *, CORE_ADDR
, CORE_ADDR
, int,
531 struct value
**, struct type
*, int);
533 #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
534 (hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
536 hppa_push_arguments (int, struct value
**, CORE_ADDR
, int, CORE_ADDR
);
538 extern CORE_ADDR
hppa_smash_text_address (CORE_ADDR addr
);
539 #define SMASH_TEXT_ADDRESS(addr) hppa_smash_text_address (addr)
541 #define GDB_TARGET_IS_HPPA
543 #define BELIEVE_PCC_PROMOTION 1
546 * Unwind table and descriptor.
549 struct unwind_table_entry
551 CORE_ADDR region_start
;
552 CORE_ADDR region_end
;
554 unsigned int Cannot_unwind
:1; /* 0 */
555 unsigned int Millicode
:1; /* 1 */
556 unsigned int Millicode_save_sr0
:1; /* 2 */
557 unsigned int Region_description
:2; /* 3..4 */
558 unsigned int reserved1
:1; /* 5 */
559 unsigned int Entry_SR
:1; /* 6 */
560 unsigned int Entry_FR
:4; /* number saved *//* 7..10 */
561 unsigned int Entry_GR
:5; /* number saved *//* 11..15 */
562 unsigned int Args_stored
:1; /* 16 */
563 unsigned int Variable_Frame
:1; /* 17 */
564 unsigned int Separate_Package_Body
:1; /* 18 */
565 unsigned int Frame_Extension_Millicode
:1; /* 19 */
566 unsigned int Stack_Overflow_Check
:1; /* 20 */
567 unsigned int Two_Instruction_SP_Increment
:1; /* 21 */
568 unsigned int Ada_Region
:1; /* 22 */
569 unsigned int cxx_info
:1; /* 23 */
570 unsigned int cxx_try_catch
:1; /* 24 */
571 unsigned int sched_entry_seq
:1; /* 25 */
572 unsigned int reserved2
:1; /* 26 */
573 unsigned int Save_SP
:1; /* 27 */
574 unsigned int Save_RP
:1; /* 28 */
575 unsigned int Save_MRP_in_frame
:1; /* 29 */
576 unsigned int extn_ptr_defined
:1; /* 30 */
577 unsigned int Cleanup_defined
:1; /* 31 */
579 unsigned int MPE_XL_interrupt_marker
:1; /* 0 */
580 unsigned int HP_UX_interrupt_marker
:1; /* 1 */
581 unsigned int Large_frame
:1; /* 2 */
582 unsigned int Pseudo_SP_Set
:1; /* 3 */
583 unsigned int reserved4
:1; /* 4 */
584 unsigned int Total_frame_size
:27; /* 5..31 */
586 /* This is *NOT* part of an actual unwind_descriptor in an object
587 file. It is *ONLY* part of the "internalized" descriptors that
588 we create from those in a file.
592 unsigned int stub_type
:4; /* 0..3 */
593 unsigned int padding
:28; /* 4..31 */
598 /* HP linkers also generate unwinds for various linker-generated stubs.
599 GDB reads in the stubs from the $UNWIND_END$ subspace, then
600 "converts" them into normal unwind entries using some of the reserved
601 fields to store the stub type. */
603 struct stub_unwind_entry
605 /* The offset within the executable for the associated stub. */
606 unsigned stub_offset
;
608 /* The type of stub this unwind entry describes. */
611 /* Unknown. Not needed by GDB at this time. */
614 /* Length (in instructions) of the associated stub. */
618 /* Sizes (in bytes) of the native unwind entries. */
619 #define UNWIND_ENTRY_SIZE 16
620 #define STUB_UNWIND_ENTRY_SIZE 8
622 /* The gaps represent linker stubs used in MPE and space for future
624 enum unwind_stub_types
627 PARAMETER_RELOCATION
= 2,
633 /* We use the objfile->obj_private pointer for two things:
635 * 1. An unwind table;
637 * 2. A pointer to any associated shared library object.
639 * #defines are used to help refer to these objects.
642 /* Info about the unwind table associated with an object file.
644 * This is hung off of the "objfile->obj_private" pointer, and
645 * is allocated in the objfile's psymbol obstack. This allows
646 * us to have unique unwind info for each executable and shared
647 * library that we are debugging.
649 struct obj_unwind_info
651 struct unwind_table_entry
*table
; /* Pointer to unwind info */
652 struct unwind_table_entry
*cache
; /* Pointer to last entry we found */
653 int last
; /* Index of last entry */
656 typedef struct obj_private_struct
658 struct obj_unwind_info
*unwind_info
; /* a pointer */
659 struct so_list
*so_info
; /* a pointer */
665 extern void target_write_pc (CORE_ADDR
, int);
666 extern CORE_ADDR
target_read_pc (int);
667 extern CORE_ADDR
skip_trampoline_code (CORE_ADDR
, char *);
670 #define TARGET_READ_PC(pid) target_read_pc (pid)
671 extern CORE_ADDR
target_read_pc (ptid_t
);
673 #define TARGET_WRITE_PC(v,pid) target_write_pc (v,pid)
674 extern void target_write_pc (CORE_ADDR
, ptid_t
);
676 #define TARGET_READ_FP() target_read_fp (PIDGET (inferior_ptid))
677 extern CORE_ADDR
target_read_fp (int);
679 /* For a number of horrible reasons we may have to adjust the location
680 of variables on the stack. Ugh. */
681 #define HPREAD_ADJUST_STACK_ADDRESS(ADDR) hpread_adjust_stack_address(ADDR)
683 extern int hpread_adjust_stack_address (CORE_ADDR
);
685 /* If the current gcc for for this target does not produce correct debugging
686 information for float parameters, both prototyped and unprototyped, then
687 define this macro. This forces gdb to always assume that floats are
688 passed as doubles and then converted in the callee. */
690 extern int hppa_coerce_float_to_double (struct type
*formal
,
691 struct type
*actual
);
692 #define COERCE_FLOAT_TO_DOUBLE(formal, actual) \
693 hppa_coerce_float_to_double (formal, actual)
695 /* Here's how to step off a permanent breakpoint. */
696 #define SKIP_PERMANENT_BREAKPOINT (hppa_skip_permanent_breakpoint)
697 extern void hppa_skip_permanent_breakpoint (void);
699 /* On HP-UX, certain system routines (millicode) have names beginning
700 with $ or $$, e.g. $$dyncall, which handles inter-space procedure
701 calls on PA-RISC. Tell the expression parser to check for those
702 when parsing tokens that begin with "$". */
703 #define SYMBOLS_CAN_START_WITH_DOLLAR (1)