Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Parameters for execution on any Hewlett-Packard PA-RISC machine. |
b6ba6518 | 2 | Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
1e698235 | 3 | 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Contributed by the Center for Software Science at the | |
6 | University of Utah (pa-gdb-bugs@cs.utah.edu). | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
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. | |
c906108c | 14 | |
c5aa993b JM |
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. | |
c906108c | 19 | |
c5aa993b JM |
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. */ | |
c906108c | 24 | |
f88e2c52 AC |
25 | #include "regcache.h" |
26 | ||
e6e68f1f JB |
27 | #define GDB_MULTI_ARCH 0 |
28 | ||
e92b0cc9 | 29 | /* NOTE: cagney/2002-11-24: This is a guess. */ |
07555a72 | 30 | #define DEPRECATED_USE_GENERIC_DUMMY_FRAMES 0 |
e92b0cc9 | 31 | #define CALL_DUMMY_LOCATION ON_STACK |
ae45cd16 | 32 | #define DEPRECATED_PC_IN_CALL_DUMMY(pc, sp, frame_address) deprecated_pc_in_call_dummy_on_stack (pc, sp, frame_address) |
a5afb99f | 33 | #define DEPRECATED_INIT_FRAME_PC(l,f) (init_frame_pc_default (l, f)) |
e92b0cc9 | 34 | |
c906108c SS |
35 | /* Forward declarations of some types we use in prototypes */ |
36 | ||
c906108c SS |
37 | struct frame_info; |
38 | struct frame_saved_regs; | |
39 | struct value; | |
40 | struct type; | |
41 | struct inferior_status; | |
c906108c | 42 | |
c906108c SS |
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 | ||
60383d10 | 61 | #if !GDB_MULTI_ARCH |
d709c020 JB |
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) | |
60383d10 | 64 | #endif |
c906108c SS |
65 | |
66 | /* Offset from address of function to start of its code. | |
67 | Zero on most machines. */ | |
68 | ||
60383d10 | 69 | #if !GDB_MULTI_ARCH |
c906108c | 70 | #define FUNCTION_START_OFFSET 0 |
60383d10 | 71 | #endif |
c5aa993b | 72 | |
c906108c SS |
73 | /* Advance PC across any function entry prologue instructions |
74 | to reach some "real" code. */ | |
75 | ||
60383d10 | 76 | #if !GDB_MULTI_ARCH |
a14ed312 | 77 | extern CORE_ADDR hppa_skip_prologue (CORE_ADDR); |
b83266a0 | 78 | #define SKIP_PROLOGUE(pc) (hppa_skip_prologue (pc)) |
60383d10 | 79 | #endif |
c906108c SS |
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 | ||
60383d10 JB |
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 | |
c906108c SS |
88 | |
89 | /* Return non-zero if we are in an appropriate trampoline. */ | |
90 | ||
60383d10 | 91 | #if !GDB_MULTI_ARCH |
c906108c | 92 | #define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \ |
60383d10 JB |
93 | hppa_in_solib_call_trampoline (pc, name) |
94 | extern int hppa_in_solib_call_trampoline (CORE_ADDR, char *); | |
95 | #endif | |
c906108c | 96 | |
60383d10 | 97 | #if !GDB_MULTI_ARCH |
c906108c | 98 | #define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \ |
60383d10 JB |
99 | hppa_in_solib_return_trampoline (pc, name) |
100 | extern int hppa_in_solib_return_trampoline (CORE_ADDR, char *); | |
101 | #endif | |
c906108c | 102 | |
60383d10 | 103 | #if !GDB_MULTI_ARCH |
c906108c | 104 | #undef SAVED_PC_AFTER_CALL |
60383d10 JB |
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 | |
c906108c | 108 | |
60383d10 | 109 | #if !GDB_MULTI_ARCH |
d709c020 JB |
110 | extern int hppa_inner_than (CORE_ADDR lhs, CORE_ADDR rhs); |
111 | #define INNER_THAN(lhs,rhs) hppa_inner_than(lhs,rhs) | |
60383d10 | 112 | #endif |
c906108c | 113 | |
60383d10 | 114 | #if !GDB_MULTI_ARCH |
d709c020 JB |
115 | extern CORE_ADDR hppa_stack_align (CORE_ADDR sp); |
116 | #define STACK_ALIGN(sp) hppa_stack_align (sp) | |
60383d10 | 117 | #endif |
c906108c | 118 | |
60383d10 | 119 | #if !GDB_MULTI_ARCH |
0a49d05e | 120 | #define EXTRA_STACK_ALIGNMENT_NEEDED 0 |
60383d10 | 121 | #endif |
c906108c SS |
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 | ||
60383d10 | 134 | #if !GDB_MULTI_ARCH |
c906108c | 135 | #define DECR_PC_AFTER_BREAK 0 |
60383d10 | 136 | #endif |
c906108c | 137 | |
d709c020 JB |
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) | |
c906108c SS |
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 | ||
60383d10 | 145 | #if !GDB_MULTI_ARCH |
c906108c | 146 | #define REGISTER_SIZE 4 |
60383d10 | 147 | #endif |
c906108c SS |
148 | |
149 | /* Number of machine registers */ | |
150 | ||
60383d10 | 151 | #if !GDB_MULTI_ARCH |
c906108c | 152 | #define NUM_REGS 128 |
60383d10 | 153 | #endif |
c906108c SS |
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 */ | |
60383d10 | 188 | #if !GDB_MULTI_ARCH |
c906108c SS |
189 | #define FP_REGNUM 3 /* Contains address of executing stack */ |
190 | /* frame */ | |
60383d10 JB |
191 | #endif |
192 | #if !GDB_MULTI_ARCH | |
c906108c | 193 | #define SP_REGNUM 30 /* Contains address of top of stack */ |
60383d10 | 194 | #endif |
c906108c SS |
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) */ | |
c5aa993b | 208 | #define CR27_REGNUM 60 /* Base register for thread-local storage, cr27 */ |
60383d10 | 209 | #if !GDB_MULTI_ARCH |
c5aa993b | 210 | #define FP0_REGNUM 64 /* floating point reg. 0 (fspr) */ |
60383d10 | 211 | #endif |
c906108c SS |
212 | #define FP4_REGNUM 72 |
213 | ||
c5aa993b JM |
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. */ | |
c906108c SS |
218 | |
219 | /* compatibility with the rest of gdb. */ | |
60383d10 | 220 | #if !GDB_MULTI_ARCH |
c906108c | 221 | #define PC_REGNUM PCOQ_HEAD_REGNUM |
60383d10 JB |
222 | #endif |
223 | #if !GDB_MULTI_ARCH | |
c906108c | 224 | #define NPC_REGNUM PCOQ_TAIL_REGNUM |
60383d10 | 225 | #endif |
c906108c SS |
226 | |
227 | /* | |
228 | * Processor Status Word Masks | |
229 | */ | |
230 | ||
c5aa993b JM |
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 */ | |
c906108c SS |
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 | ||
4ee3352d | 252 | #define DEPRECATED_CLEAN_UP_REGISTER_VALUE(regno, buf) \ |
c906108c SS |
253 | do { \ |
254 | if ((regno) == PCOQ_HEAD_REGNUM || (regno) == PCOQ_TAIL_REGNUM) \ | |
7be570e7 | 255 | (buf)[sizeof(CORE_ADDR) -1] &= ~0x3; \ |
c906108c SS |
256 | } while (0) |
257 | ||
903ad3a6 | 258 | /* Define DEPRECATED_REGISTERS_INFO() to do machine-specific formatting |
c906108c SS |
259 | of register dumps. */ |
260 | ||
903ad3a6 | 261 | #define DEPRECATED_REGISTERS_INFO(_regnum, fp) pa_do_registers_info (_regnum, fp) |
a14ed312 | 262 | extern void pa_do_registers_info (int, int); |
c906108c SS |
263 | |
264 | #if 0 | |
265 | #define STRCAT_REGISTER(regnum, fpregs, stream, precision) pa_do_strcat_registers_info (regnum, fpregs, stream, precision) | |
d9fcf2fb | 266 | extern void pa_do_strcat_registers_info (int, int, struct ui_file *, enum precision_type); |
c906108c SS |
267 | #endif |
268 | ||
269 | /* PA specific macro to see if the current instruction is nullified. */ | |
270 | #ifndef INSTRUCTION_NULLIFIED | |
d709c020 JB |
271 | extern int hppa_instruction_nullified (void); |
272 | #define INSTRUCTION_NULLIFIED hppa_instruction_nullified () | |
c906108c SS |
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 | ||
60383d10 | 279 | #if !GDB_MULTI_ARCH |
60e1ff27 JB |
280 | extern int hppa_register_raw_size (int reg_nr); |
281 | #define REGISTER_RAW_SIZE(N) hppa_register_raw_size (N) | |
60383d10 | 282 | #endif |
c906108c SS |
283 | |
284 | /* Total amount of space needed to store our copies of the machine's | |
285 | register state, the array `registers'. */ | |
60383d10 | 286 | #if !GDB_MULTI_ARCH |
c906108c | 287 | #define REGISTER_BYTES (NUM_REGS * 4) |
60383d10 | 288 | #endif |
c906108c | 289 | |
60383d10 | 290 | #if !GDB_MULTI_ARCH |
d709c020 JB |
291 | extern int hppa_register_byte (int reg_nr); |
292 | #define REGISTER_BYTE(N) hppa_register_byte (N) | |
60383d10 | 293 | #endif |
c906108c SS |
294 | |
295 | /* Number of bytes of storage in the program's representation | |
296 | for register N. */ | |
297 | ||
60383d10 | 298 | #if !GDB_MULTI_ARCH |
c906108c | 299 | #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N) |
60383d10 | 300 | #endif |
c906108c SS |
301 | |
302 | /* Largest value REGISTER_RAW_SIZE can have. */ | |
303 | ||
60383d10 | 304 | #if !GDB_MULTI_ARCH |
c906108c | 305 | #define MAX_REGISTER_RAW_SIZE 4 |
60383d10 | 306 | #endif |
c906108c SS |
307 | |
308 | /* Largest value REGISTER_VIRTUAL_SIZE can have. */ | |
309 | ||
60383d10 | 310 | #if !GDB_MULTI_ARCH |
c906108c | 311 | #define MAX_REGISTER_VIRTUAL_SIZE 8 |
60383d10 | 312 | #endif |
c906108c | 313 | |
60383d10 | 314 | #if !GDB_MULTI_ARCH |
d709c020 JB |
315 | extern struct type * hppa_register_virtual_type (int reg_nr); |
316 | #define REGISTER_VIRTUAL_TYPE(N) hppa_register_virtual_type (N) | |
60383d10 | 317 | #endif |
c906108c | 318 | |
60383d10 | 319 | #if !GDB_MULTI_ARCH |
d709c020 JB |
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) | |
60383d10 | 322 | #endif |
c906108c SS |
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, | |
1cdb71fe | 326 | into VALBUF. */ |
c906108c | 327 | |
60383d10 | 328 | #if !GDB_MULTI_ARCH |
61d8d407 | 329 | void hppa_extract_return_value (struct type *type, char *regbuf, char *valbuf); |
26e9b323 | 330 | #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
1cdb71fe | 331 | hppa_extract_return_value (TYPE, REGBUF, VALBUF); |
60383d10 | 332 | #endif |
c906108c SS |
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 | |
c5aa993b | 344 | */ |
60383d10 | 345 | #if !GDB_MULTI_ARCH |
c906108c SS |
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) | |
60383d10 | 348 | #endif |
c906108c SS |
349 | |
350 | /* Write into appropriate registers a function return value | |
1cdb71fe | 351 | of type TYPE, given in virtual format. */ |
c906108c | 352 | |
60383d10 | 353 | #if !GDB_MULTI_ARCH |
61d8d407 | 354 | extern void hppa_store_return_value (struct type *type, char *valbuf); |
ebba8386 | 355 | #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \ |
1cdb71fe | 356 | hppa_store_return_value (TYPE, VALBUF); |
60383d10 | 357 | #endif |
c906108c | 358 | |
60383d10 JB |
359 | #if !GDB_MULTI_ARCH |
360 | extern CORE_ADDR hppa_extract_struct_value_address (char *regbuf); | |
26e9b323 | 361 | #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ |
60383d10 JB |
362 | hppa_extract_struct_value_address (REGBUF) |
363 | #endif | |
c906108c SS |
364 | |
365 | /* elz: Return a large value, which is stored on the stack at addr. | |
26e9b323 AC |
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. */ | |
61d8d407 AC |
375 | struct value *hppa_value_returned_from_stack (register struct type *valtype, |
376 | CORE_ADDR addr); | |
c906108c SS |
377 | #define VALUE_RETURNED_FROM_STACK(valtype,addr) \ |
378 | hppa_value_returned_from_stack (valtype, addr) | |
379 | ||
60383d10 | 380 | #if !GDB_MULTI_ARCH |
d709c020 JB |
381 | extern int hppa_cannot_store_register (int regnum); |
382 | #define CANNOT_STORE_REGISTER(regno) hppa_cannot_store_register (regno) | |
60383d10 | 383 | #endif |
c906108c | 384 | |
60383d10 JB |
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 | |
c906108c SS |
389 | |
390 | /* Describe the pointer in each stack frame to the previous stack frame | |
391 | (its caller). */ | |
392 | ||
f208ba17 AC |
393 | /* FRAME_CHAIN takes a frame's nominal address and produces the |
394 | frame's chain-pointer. */ | |
c906108c SS |
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 | ||
60383d10 JB |
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 | |
c906108c | 404 | |
60383d10 | 405 | #if !GDB_MULTI_ARCH |
a14ed312 | 406 | extern int hppa_frame_chain_valid (CORE_ADDR, struct frame_info *); |
c906108c | 407 | #define FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe) |
60383d10 | 408 | #endif |
c906108c | 409 | |
c906108c SS |
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. */ | |
60383d10 | 415 | #if !GDB_MULTI_ARCH |
392a587b | 416 | #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
60383d10 JB |
417 | (hppa_frameless_function_invocation (FI)) |
418 | extern int hppa_frameless_function_invocation (struct frame_info *); | |
419 | #endif | |
c906108c | 420 | |
60383d10 | 421 | #if !GDB_MULTI_ARCH |
a14ed312 | 422 | extern CORE_ADDR hppa_frame_saved_pc (struct frame_info *frame); |
c906108c | 423 | #define FRAME_SAVED_PC(FRAME) hppa_frame_saved_pc (FRAME) |
60383d10 | 424 | #endif |
c906108c | 425 | |
60383d10 | 426 | #if !GDB_MULTI_ARCH |
d709c020 JB |
427 | extern CORE_ADDR hppa_frame_args_address (struct frame_info *fi); |
428 | #define FRAME_ARGS_ADDRESS(fi) hppa_frame_args_address (fi) | |
60383d10 | 429 | #endif |
d709c020 | 430 | |
60383d10 | 431 | #if !GDB_MULTI_ARCH |
d709c020 JB |
432 | extern CORE_ADDR hppa_frame_locals_address (struct frame_info *fi); |
433 | #define FRAME_LOCALS_ADDRESS(fi) hppa_frame_locals_address (fi) | |
60383d10 | 434 | #endif |
c906108c | 435 | |
60383d10 JB |
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 | |
c906108c | 440 | |
60383d10 | 441 | #if !GDB_MULTI_ARCH |
c906108c | 442 | #define FRAME_ARGS_SKIP 0 |
60383d10 | 443 | #endif |
c906108c SS |
444 | |
445 | #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ | |
446 | hppa_frame_find_saved_regs (frame_info, &frame_saved_regs) | |
570b8f7c AC |
447 | extern void hppa_frame_find_saved_regs (struct frame_info *, |
448 | struct frame_saved_regs *); | |
c906108c | 449 | \f |
c5aa993b | 450 | |
c906108c SS |
451 | /* Things needed for making the inferior call functions. */ |
452 | ||
453 | /* Push an empty stack frame, to record the current PC, etc. */ | |
454 | ||
60383d10 JB |
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 *); | |
c906108c SS |
462 | |
463 | /* Discard from the stack the innermost frame, | |
464 | restoring all saved registers. */ | |
60383d10 | 465 | #if !GDB_MULTI_ARCH |
c906108c | 466 | #define POP_FRAME hppa_pop_frame () |
a14ed312 | 467 | extern void hppa_pop_frame (void); |
60383d10 | 468 | #endif |
c906108c SS |
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 | ||
c5aa993b JM |
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 | |
c906108c SS |
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 | ||
60383d10 | 555 | #if !GDB_MULTI_ARCH |
c906108c | 556 | #define CALL_DUMMY_LENGTH (INSTRUCTION_SIZE * 28) |
60383d10 | 557 | #endif |
7be570e7 | 558 | #define REG_PARM_STACK_SPACE 16 |
c906108c SS |
559 | |
560 | #else /* defined PA_LEVEL_0 */ | |
561 | ||
60383d10 JB |
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. */ | |
c906108c | 565 | /* This is the call dummy for a level 0 PA. Level 0's don't have space |
1faa59a8 | 566 | registers (or floating point?), so we skip all that inter-space call stuff, |
c906108c SS |
567 | and avoid touching the fp regs. |
568 | ||
c5aa993b JM |
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 | */ | |
c906108c SS |
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 | ||
60383d10 | 595 | #endif /* defined PA_LEVEL_0 */ |
c906108c | 596 | |
60383d10 | 597 | #if !GDB_MULTI_ARCH |
c906108c | 598 | #define CALL_DUMMY_START_OFFSET 0 |
60383d10 | 599 | #endif |
c906108c SS |
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) \ | |
ae45cd16 | 605 | (DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) && \ |
c906108c SS |
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 | ||
60383d10 JB |
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! */ | |
c906108c | 621 | #define FIX_CALL_DUMMY hppa_fix_call_dummy |
60383d10 JB |
622 | extern CORE_ADDR hppa_fix_call_dummy (char *, CORE_ADDR, CORE_ADDR, int, |
623 | struct value **, struct type *, int); | |
c906108c | 624 | |
60383d10 | 625 | #if !GDB_MULTI_ARCH |
c906108c | 626 | #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ |
392a587b | 627 | (hppa_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) |
570b8f7c AC |
628 | extern CORE_ADDR hppa_push_arguments (int, struct value **, CORE_ADDR, int, |
629 | CORE_ADDR); | |
60383d10 JB |
630 | #endif |
631 | ||
c906108c | 632 | \f |
60383d10 | 633 | #if !GDB_MULTI_ARCH |
d709c020 JB |
634 | extern CORE_ADDR hppa_smash_text_address (CORE_ADDR addr); |
635 | #define SMASH_TEXT_ADDRESS(addr) hppa_smash_text_address (addr) | |
60383d10 | 636 | #endif |
c906108c SS |
637 | |
638 | #define GDB_TARGET_IS_HPPA | |
639 | ||
60383d10 | 640 | #if !GDB_MULTI_ARCH |
c906108c | 641 | #define BELIEVE_PCC_PROMOTION 1 |
60383d10 | 642 | #endif |
c906108c SS |
643 | |
644 | /* | |
645 | * Unwind table and descriptor. | |
646 | */ | |
647 | ||
c5aa993b JM |
648 | struct unwind_table_entry |
649 | { | |
7be570e7 JM |
650 | CORE_ADDR region_start; |
651 | CORE_ADDR region_end; | |
c5aa993b JM |
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. | |
c906108c | 688 | */ |
c5aa993b JM |
689 | struct |
690 | { | |
691 | unsigned int stub_type:4; /* 0..3 */ | |
692 | unsigned int padding:28; /* 4..31 */ | |
693 | } | |
694 | stub_unwind; | |
695 | }; | |
c906108c SS |
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 | |
c5aa993b JM |
703 | { |
704 | /* The offset within the executable for the associated stub. */ | |
705 | unsigned stub_offset; | |
c906108c | 706 | |
c5aa993b JM |
707 | /* The type of stub this unwind entry describes. */ |
708 | char type; | |
c906108c | 709 | |
c5aa993b JM |
710 | /* Unknown. Not needed by GDB at this time. */ |
711 | char prs_info; | |
c906108c | 712 | |
c5aa993b JM |
713 | /* Length (in instructions) of the associated stub. */ |
714 | short stub_length; | |
715 | }; | |
c906108c SS |
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 | |
c5aa993b JM |
724 | { |
725 | LONG_BRANCH = 1, | |
726 | PARAMETER_RELOCATION = 2, | |
727 | EXPORT = 10, | |
728 | IMPORT = 11, | |
729 | IMPORT_SHLIB = 12, | |
730 | }; | |
c906108c SS |
731 | |
732 | /* We use the objfile->obj_private pointer for two things: | |
c5aa993b | 733 | |
c906108c SS |
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 | */ | |
c5aa993b | 740 | |
c906108c | 741 | /* Info about the unwind table associated with an object file. |
c5aa993b | 742 | |
c906108c SS |
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 | */ | |
c5aa993b JM |
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 */ | |
53a5351d | 759 | CORE_ADDR dp; |
c5aa993b JM |
760 | } |
761 | obj_private_data_t; | |
c906108c SS |
762 | |
763 | #if 0 | |
a14ed312 KB |
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 *); | |
c906108c SS |
767 | #endif |
768 | ||
60383d10 JB |
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 | |
c906108c | 773 | |
60383d10 JB |
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 | |
c906108c | 778 | |
60383d10 JB |
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 | |
c906108c SS |
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) | |
a14ed312 | 787 | extern int hpread_adjust_stack_address (CORE_ADDR); |
c906108c | 788 | |
c2c6d25f JM |
789 | /* Here's how to step off a permanent breakpoint. */ |
790 | #define SKIP_PERMANENT_BREAKPOINT (hppa_skip_permanent_breakpoint) | |
791 | extern void hppa_skip_permanent_breakpoint (void); | |
2df3850c JM |
792 | |
793 | /* On HP-UX, certain system routines (millicode) have names beginning | |
794 | with $ or $$, e.g. $$dyncall, which handles inter-space procedure | |
795 | calls on PA-RISC. Tell the expression parser to check for those | |
796 | when parsing tokens that begin with "$". */ | |
797 | #define SYMBOLS_CAN_START_WITH_DOLLAR (1) |