1 /* Target-dependent code for the IA-64 for GDB, the GNU debugger.
3 Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "arch-utils.h"
25 #include "floatformat.h"
28 #include "reggroups.h"
30 #include "frame-base.h"
31 #include "frame-unwind.h"
34 #include "gdb_assert.h"
36 #include "elf/common.h" /* for DT_PLTGOT value */
41 #include "ia64-tdep.h"
44 #ifdef HAVE_LIBUNWIND_IA64_H
45 #include "elf/ia64.h" /* for PT_IA_64_UNWIND value */
46 #include "libunwind-frame.h"
47 #include "libunwind-ia64.h"
49 /* Note: KERNEL_START is supposed to be an address which is not going
50 to ever contain any valid unwind info. For ia64 linux, the choice
51 of 0xc000000000000000 is fairly safe since that's uncached space.
53 We use KERNEL_START as follows: after obtaining the kernel's
54 unwind table via getunwind(), we project its unwind data into
55 address-range KERNEL_START-(KERNEL_START+ktab_size) and then
56 when ia64_access_mem() sees a memory access to this
57 address-range, we redirect it to ktab instead.
59 None of this hackery is needed with a modern kernel/libcs
60 which uses the kernel virtual DSO to provide access to the
61 kernel's unwind info. In that case, ktab_size remains 0 and
62 hence the value of KERNEL_START doesn't matter. */
64 #define KERNEL_START 0xc000000000000000ULL
66 static size_t ktab_size = 0;
67 struct ia64_table_entry
69 uint64_t start_offset;
74 static struct ia64_table_entry *ktab = NULL;
78 /* An enumeration of the different IA-64 instruction types. */
80 typedef enum instruction_type
82 A, /* Integer ALU ; I-unit or M-unit */
83 I, /* Non-ALU integer; I-unit */
84 M, /* Memory ; M-unit */
85 F, /* Floating-point ; F-unit */
86 B, /* Branch ; B-unit */
87 L, /* Extended (L+X) ; I-unit */
88 X, /* Extended (L+X) ; I-unit */
89 undefined /* undefined or reserved */
92 /* We represent IA-64 PC addresses as the value of the instruction
93 pointer or'd with some bit combination in the low nibble which
94 represents the slot number in the bundle addressed by the
95 instruction pointer. The problem is that the Linux kernel
96 multiplies its slot numbers (for exceptions) by one while the
97 disassembler multiplies its slot numbers by 6. In addition, I've
98 heard it said that the simulator uses 1 as the multiplier.
100 I've fixed the disassembler so that the bytes_per_line field will
101 be the slot multiplier. If bytes_per_line comes in as zero, it
102 is set to six (which is how it was set up initially). -- objdump
103 displays pretty disassembly dumps with this value. For our purposes,
104 we'll set bytes_per_line to SLOT_MULTIPLIER. This is okay since we
105 never want to also display the raw bytes the way objdump does. */
107 #define SLOT_MULTIPLIER 1
109 /* Length in bytes of an instruction bundle */
111 #define BUNDLE_LEN 16
113 static gdbarch_init_ftype ia64_gdbarch_init;
115 static gdbarch_register_name_ftype ia64_register_name;
116 static gdbarch_register_type_ftype ia64_register_type;
117 static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc;
118 static gdbarch_skip_prologue_ftype ia64_skip_prologue;
119 static struct type *is_float_or_hfa_type (struct type *t);
120 static CORE_ADDR ia64_find_global_pointer (CORE_ADDR faddr);
122 static struct type *builtin_type_ia64_ext;
124 #define NUM_IA64_RAW_REGS 462
126 static int sp_regnum = IA64_GR12_REGNUM;
127 static int fp_regnum = IA64_VFP_REGNUM;
128 static int lr_regnum = IA64_VRAP_REGNUM;
130 /* NOTE: we treat the register stack registers r32-r127 as pseudo-registers because
131 they may not be accessible via the ptrace register get/set interfaces. */
132 enum pseudo_regs { FIRST_PSEUDO_REGNUM = NUM_IA64_RAW_REGS, VBOF_REGNUM = IA64_NAT127_REGNUM + 1, V32_REGNUM,
133 V127_REGNUM = V32_REGNUM + 95,
134 VP0_REGNUM, VP16_REGNUM = VP0_REGNUM + 16, VP63_REGNUM = VP0_REGNUM + 63, LAST_PSEUDO_REGNUM };
136 /* Array of register names; There should be ia64_num_regs strings in
139 static char *ia64_register_names[] =
140 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
141 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
142 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
143 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
144 "", "", "", "", "", "", "", "",
145 "", "", "", "", "", "", "", "",
146 "", "", "", "", "", "", "", "",
147 "", "", "", "", "", "", "", "",
148 "", "", "", "", "", "", "", "",
149 "", "", "", "", "", "", "", "",
150 "", "", "", "", "", "", "", "",
151 "", "", "", "", "", "", "", "",
152 "", "", "", "", "", "", "", "",
153 "", "", "", "", "", "", "", "",
154 "", "", "", "", "", "", "", "",
155 "", "", "", "", "", "", "", "",
157 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
158 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
159 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
160 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
161 "f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39",
162 "f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47",
163 "f48", "f49", "f50", "f51", "f52", "f53", "f54", "f55",
164 "f56", "f57", "f58", "f59", "f60", "f61", "f62", "f63",
165 "f64", "f65", "f66", "f67", "f68", "f69", "f70", "f71",
166 "f72", "f73", "f74", "f75", "f76", "f77", "f78", "f79",
167 "f80", "f81", "f82", "f83", "f84", "f85", "f86", "f87",
168 "f88", "f89", "f90", "f91", "f92", "f93", "f94", "f95",
169 "f96", "f97", "f98", "f99", "f100", "f101", "f102", "f103",
170 "f104", "f105", "f106", "f107", "f108", "f109", "f110", "f111",
171 "f112", "f113", "f114", "f115", "f116", "f117", "f118", "f119",
172 "f120", "f121", "f122", "f123", "f124", "f125", "f126", "f127",
174 "", "", "", "", "", "", "", "",
175 "", "", "", "", "", "", "", "",
176 "", "", "", "", "", "", "", "",
177 "", "", "", "", "", "", "", "",
178 "", "", "", "", "", "", "", "",
179 "", "", "", "", "", "", "", "",
180 "", "", "", "", "", "", "", "",
181 "", "", "", "", "", "", "", "",
183 "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7",
187 "pr", "ip", "psr", "cfm",
189 "kr0", "kr1", "kr2", "kr3", "kr4", "kr5", "kr6", "kr7",
190 "", "", "", "", "", "", "", "",
191 "rsc", "bsp", "bspstore", "rnat",
193 "eflag", "csd", "ssd", "cflg", "fsr", "fir", "fdr", "",
194 "ccv", "", "", "", "unat", "", "", "",
195 "fpsr", "", "", "", "itc",
196 "", "", "", "", "", "", "", "", "", "",
197 "", "", "", "", "", "", "", "", "",
199 "", "", "", "", "", "", "", "", "", "",
200 "", "", "", "", "", "", "", "", "", "",
201 "", "", "", "", "", "", "", "", "", "",
202 "", "", "", "", "", "", "", "", "", "",
203 "", "", "", "", "", "", "", "", "", "",
204 "", "", "", "", "", "", "", "", "", "",
206 "nat0", "nat1", "nat2", "nat3", "nat4", "nat5", "nat6", "nat7",
207 "nat8", "nat9", "nat10", "nat11", "nat12", "nat13", "nat14", "nat15",
208 "nat16", "nat17", "nat18", "nat19", "nat20", "nat21", "nat22", "nat23",
209 "nat24", "nat25", "nat26", "nat27", "nat28", "nat29", "nat30", "nat31",
210 "nat32", "nat33", "nat34", "nat35", "nat36", "nat37", "nat38", "nat39",
211 "nat40", "nat41", "nat42", "nat43", "nat44", "nat45", "nat46", "nat47",
212 "nat48", "nat49", "nat50", "nat51", "nat52", "nat53", "nat54", "nat55",
213 "nat56", "nat57", "nat58", "nat59", "nat60", "nat61", "nat62", "nat63",
214 "nat64", "nat65", "nat66", "nat67", "nat68", "nat69", "nat70", "nat71",
215 "nat72", "nat73", "nat74", "nat75", "nat76", "nat77", "nat78", "nat79",
216 "nat80", "nat81", "nat82", "nat83", "nat84", "nat85", "nat86", "nat87",
217 "nat88", "nat89", "nat90", "nat91", "nat92", "nat93", "nat94", "nat95",
218 "nat96", "nat97", "nat98", "nat99", "nat100","nat101","nat102","nat103",
219 "nat104","nat105","nat106","nat107","nat108","nat109","nat110","nat111",
220 "nat112","nat113","nat114","nat115","nat116","nat117","nat118","nat119",
221 "nat120","nat121","nat122","nat123","nat124","nat125","nat126","nat127",
225 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
226 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
227 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
228 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
229 "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
230 "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
231 "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
232 "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
233 "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
234 "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
235 "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
236 "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
238 "p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7",
239 "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",
240 "p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23",
241 "p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31",
242 "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39",
243 "p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47",
244 "p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55",
245 "p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63",
248 struct ia64_frame_cache
250 CORE_ADDR base; /* frame pointer base for frame */
251 CORE_ADDR pc; /* function start pc for frame */
252 CORE_ADDR saved_sp; /* stack pointer for frame */
253 CORE_ADDR bsp; /* points at r32 for the current frame */
254 CORE_ADDR cfm; /* cfm value for current frame */
255 CORE_ADDR prev_cfm; /* cfm value for previous frame */
257 int sof; /* Size of frame (decoded from cfm value) */
258 int sol; /* Size of locals (decoded from cfm value) */
259 int sor; /* Number of rotating registers. (decoded from cfm value) */
260 CORE_ADDR after_prologue;
261 /* Address of first instruction after the last
262 prologue instruction; Note that there may
263 be instructions from the function's body
264 intermingled with the prologue. */
265 int mem_stack_frame_size;
266 /* Size of the memory stack frame (may be zero),
267 or -1 if it has not been determined yet. */
268 int fp_reg; /* Register number (if any) used a frame pointer
269 for this frame. 0 if no register is being used
270 as the frame pointer. */
272 /* Saved registers. */
273 CORE_ADDR saved_regs[NUM_IA64_RAW_REGS];
278 ia64_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
279 struct reggroup *group)
284 if (group == all_reggroup)
286 vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
287 float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
288 raw_p = regnum < NUM_IA64_RAW_REGS;
289 if (group == float_reggroup)
291 if (group == vector_reggroup)
293 if (group == general_reggroup)
294 return (!vector_p && !float_p);
295 if (group == save_reggroup || group == restore_reggroup)
301 ia64_register_name (struct gdbarch *gdbarch, int reg)
303 return ia64_register_names[reg];
307 ia64_register_type (struct gdbarch *arch, int reg)
309 if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
310 return builtin_type_ia64_ext;
312 return builtin_type_long;
316 ia64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
318 if (reg >= IA64_GR32_REGNUM && reg <= IA64_GR127_REGNUM)
319 return V32_REGNUM + (reg - IA64_GR32_REGNUM);
324 floatformat_valid (const struct floatformat *fmt, const void *from)
329 const struct floatformat floatformat_ia64_ext =
331 floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
332 floatformat_intbit_yes, "floatformat_ia64_ext", floatformat_valid, NULL
335 const struct floatformat *floatformats_ia64_ext[2] =
337 &floatformat_ia64_ext,
338 &floatformat_ia64_ext
342 /* Extract ``len'' bits from an instruction bundle starting at
346 extract_bit_field (char *bundle, int from, int len)
348 long long result = 0LL;
350 int from_byte = from / 8;
351 int to_byte = to / 8;
352 unsigned char *b = (unsigned char *) bundle;
358 if (from_byte == to_byte)
359 c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
360 result = c >> (from % 8);
361 lshift = 8 - (from % 8);
363 for (i = from_byte+1; i < to_byte; i++)
365 result |= ((long long) b[i]) << lshift;
369 if (from_byte < to_byte && (to % 8 != 0))
372 c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
373 result |= ((long long) c) << lshift;
379 /* Replace the specified bits in an instruction bundle */
382 replace_bit_field (char *bundle, long long val, int from, int len)
385 int from_byte = from / 8;
386 int to_byte = to / 8;
387 unsigned char *b = (unsigned char *) bundle;
390 if (from_byte == to_byte)
392 unsigned char left, right;
394 left = (c >> (to % 8)) << (to % 8);
395 right = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
396 c = (unsigned char) (val & 0xff);
397 c = (unsigned char) (c << (from % 8 + 8 - to % 8)) >> (8 - to % 8);
405 c = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
406 c = c | (val << (from % 8));
408 val >>= 8 - from % 8;
410 for (i = from_byte+1; i < to_byte; i++)
419 unsigned char cv = (unsigned char) val;
421 c = c >> (to % 8) << (to % 8);
422 c |= ((unsigned char) (cv << (8 - to % 8))) >> (8 - to % 8);
428 /* Return the contents of slot N (for N = 0, 1, or 2) in
429 and instruction bundle */
432 slotN_contents (char *bundle, int slotnum)
434 return extract_bit_field (bundle, 5+41*slotnum, 41);
437 /* Store an instruction in an instruction bundle */
440 replace_slotN_contents (char *bundle, long long instr, int slotnum)
442 replace_bit_field (bundle, instr, 5+41*slotnum, 41);
445 static enum instruction_type template_encoding_table[32][3] =
447 { M, I, I }, /* 00 */
448 { M, I, I }, /* 01 */
449 { M, I, I }, /* 02 */
450 { M, I, I }, /* 03 */
451 { M, L, X }, /* 04 */
452 { M, L, X }, /* 05 */
453 { undefined, undefined, undefined }, /* 06 */
454 { undefined, undefined, undefined }, /* 07 */
455 { M, M, I }, /* 08 */
456 { M, M, I }, /* 09 */
457 { M, M, I }, /* 0A */
458 { M, M, I }, /* 0B */
459 { M, F, I }, /* 0C */
460 { M, F, I }, /* 0D */
461 { M, M, F }, /* 0E */
462 { M, M, F }, /* 0F */
463 { M, I, B }, /* 10 */
464 { M, I, B }, /* 11 */
465 { M, B, B }, /* 12 */
466 { M, B, B }, /* 13 */
467 { undefined, undefined, undefined }, /* 14 */
468 { undefined, undefined, undefined }, /* 15 */
469 { B, B, B }, /* 16 */
470 { B, B, B }, /* 17 */
471 { M, M, B }, /* 18 */
472 { M, M, B }, /* 19 */
473 { undefined, undefined, undefined }, /* 1A */
474 { undefined, undefined, undefined }, /* 1B */
475 { M, F, B }, /* 1C */
476 { M, F, B }, /* 1D */
477 { undefined, undefined, undefined }, /* 1E */
478 { undefined, undefined, undefined }, /* 1F */
481 /* Fetch and (partially) decode an instruction at ADDR and return the
482 address of the next instruction to fetch. */
485 fetch_instruction (CORE_ADDR addr, instruction_type *it, long long *instr)
487 char bundle[BUNDLE_LEN];
488 int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
492 /* Warn about slot numbers greater than 2. We used to generate
493 an error here on the assumption that the user entered an invalid
494 address. But, sometimes GDB itself requests an invalid address.
495 This can (easily) happen when execution stops in a function for
496 which there are no symbols. The prologue scanner will attempt to
497 find the beginning of the function - if the nearest symbol
498 happens to not be aligned on a bundle boundary (16 bytes), the
499 resulting starting address will cause GDB to think that the slot
502 So we warn about it and set the slot number to zero. It is
503 not necessarily a fatal condition, particularly if debugging
504 at the assembly language level. */
507 warning (_("Can't fetch instructions for slot numbers greater than 2.\n"
508 "Using slot 0 instead"));
514 val = target_read_memory (addr, bundle, BUNDLE_LEN);
519 *instr = slotN_contents (bundle, slotnum);
520 template = extract_bit_field (bundle, 0, 5);
521 *it = template_encoding_table[(int)template][slotnum];
523 if (slotnum == 2 || (slotnum == 1 && *it == L))
526 addr += (slotnum + 1) * SLOT_MULTIPLIER;
531 /* There are 5 different break instructions (break.i, break.b,
532 break.m, break.f, and break.x), but they all have the same
533 encoding. (The five bit template in the low five bits of the
534 instruction bundle distinguishes one from another.)
536 The runtime architecture manual specifies that break instructions
537 used for debugging purposes must have the upper two bits of the 21
538 bit immediate set to a 0 and a 1 respectively. A breakpoint
539 instruction encodes the most significant bit of its 21 bit
540 immediate at bit 36 of the 41 bit instruction. The penultimate msb
541 is at bit 25 which leads to the pattern below.
543 Originally, I had this set up to do, e.g, a "break.i 0x80000" But
544 it turns out that 0x80000 was used as the syscall break in the early
545 simulators. So I changed the pattern slightly to do "break.i 0x080001"
546 instead. But that didn't work either (I later found out that this
547 pattern was used by the simulator that I was using.) So I ended up
548 using the pattern seen below. */
551 #define IA64_BREAKPOINT 0x00002000040LL
553 #define IA64_BREAKPOINT 0x00003333300LL
556 ia64_memory_insert_breakpoint (struct gdbarch *gdbarch,
557 struct bp_target_info *bp_tgt)
559 CORE_ADDR addr = bp_tgt->placed_address;
560 char bundle[BUNDLE_LEN];
561 int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
567 error (_("Can't insert breakpoint for slot numbers greater than 2."));
571 val = target_read_memory (addr, bundle, BUNDLE_LEN);
573 /* Check for L type instruction in 2nd slot, if present then
574 bump up the slot number to the 3rd slot */
575 template = extract_bit_field (bundle, 0, 5);
576 if (slotnum == 1 && template_encoding_table[template][1] == L)
581 instr = slotN_contents (bundle, slotnum);
582 memcpy (bp_tgt->shadow_contents, &instr, sizeof (instr));
583 bp_tgt->placed_size = bp_tgt->shadow_len = sizeof (instr);
584 replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum);
586 target_write_memory (addr, bundle, BUNDLE_LEN);
592 ia64_memory_remove_breakpoint (struct gdbarch *gdbarch,
593 struct bp_target_info *bp_tgt)
595 CORE_ADDR addr = bp_tgt->placed_address;
596 char bundle[BUNDLE_LEN];
597 int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER;
604 val = target_read_memory (addr, bundle, BUNDLE_LEN);
606 /* Check for L type instruction in 2nd slot, if present then
607 bump up the slot number to the 3rd slot */
608 template = extract_bit_field (bundle, 0, 5);
609 if (slotnum == 1 && template_encoding_table[template][1] == L)
614 memcpy (&instr, bp_tgt->shadow_contents, sizeof instr);
615 replace_slotN_contents (bundle, instr, slotnum);
617 target_write_memory (addr, bundle, BUNDLE_LEN);
622 /* We don't really want to use this, but remote.c needs to call it in order
623 to figure out if Z-packets are supported or not. Oh, well. */
624 const unsigned char *
625 ia64_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr)
627 static unsigned char breakpoint[] =
628 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
629 *lenptr = sizeof (breakpoint);
637 ia64_read_pc (struct regcache *regcache)
639 ULONGEST psr_value, pc_value;
642 regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value);
643 regcache_cooked_read_unsigned (regcache, IA64_IP_REGNUM, &pc_value);
644 slot_num = (psr_value >> 41) & 3;
646 return pc_value | (slot_num * SLOT_MULTIPLIER);
650 ia64_write_pc (struct regcache *regcache, CORE_ADDR new_pc)
652 int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
655 regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value);
656 psr_value &= ~(3LL << 41);
657 psr_value |= (ULONGEST)(slot_num & 0x3) << 41;
661 regcache_cooked_write_unsigned (regcache, IA64_PSR_REGNUM, psr_value);
662 regcache_cooked_write_unsigned (regcache, IA64_IP_REGNUM, new_pc);
665 #define IS_NaT_COLLECTION_ADDR(addr) ((((addr) >> 3) & 0x3f) == 0x3f)
667 /* Returns the address of the slot that's NSLOTS slots away from
668 the address ADDR. NSLOTS may be positive or negative. */
670 rse_address_add(CORE_ADDR addr, int nslots)
673 int mandatory_nat_slots = nslots / 63;
674 int direction = nslots < 0 ? -1 : 1;
676 new_addr = addr + 8 * (nslots + mandatory_nat_slots);
678 if ((new_addr >> 9) != ((addr + 8 * 64 * mandatory_nat_slots) >> 9))
679 new_addr += 8 * direction;
681 if (IS_NaT_COLLECTION_ADDR(new_addr))
682 new_addr += 8 * direction;
688 ia64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
689 int regnum, gdb_byte *buf)
691 if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
693 #ifdef HAVE_LIBUNWIND_IA64_H
694 /* First try and use the libunwind special reg accessor, otherwise fallback to
696 if (!libunwind_is_initialized ()
697 || libunwind_get_reg_special (gdbarch, regcache, regnum, buf) != 0)
700 /* The fallback position is to assume that r32-r127 are found sequentially
701 in memory starting at $bof. This isn't always true, but without libunwind,
702 this is the best we can do. */
706 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
707 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
709 /* The bsp points at the end of the register frame so we
710 subtract the size of frame from it to get start of register frame. */
711 bsp = rse_address_add (bsp, -(cfm & 0x7f));
713 if ((cfm & 0x7f) > regnum - V32_REGNUM)
715 ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
716 reg = read_memory_integer ((CORE_ADDR)reg_addr, 8);
717 store_unsigned_integer (buf, register_size (gdbarch, regnum), reg);
720 store_unsigned_integer (buf, register_size (gdbarch, regnum), 0);
723 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
727 regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
728 unatN_val = (unat & (1LL << (regnum - IA64_NAT0_REGNUM))) != 0;
729 store_unsigned_integer (buf, register_size (gdbarch, regnum), unatN_val);
731 else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
733 ULONGEST natN_val = 0;
736 CORE_ADDR gr_addr = 0;
737 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
738 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
740 /* The bsp points at the end of the register frame so we
741 subtract the size of frame from it to get start of register frame. */
742 bsp = rse_address_add (bsp, -(cfm & 0x7f));
744 if ((cfm & 0x7f) > regnum - V32_REGNUM)
745 gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
749 /* Compute address of nat collection bits. */
750 CORE_ADDR nat_addr = gr_addr | 0x1f8;
751 CORE_ADDR nat_collection;
753 /* If our nat collection address is bigger than bsp, we have to get
754 the nat collection from rnat. Otherwise, we fetch the nat
755 collection from the computed address. */
757 regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
759 nat_collection = read_memory_integer (nat_addr, 8);
760 nat_bit = (gr_addr >> 3) & 0x3f;
761 natN_val = (nat_collection >> nat_bit) & 1;
764 store_unsigned_integer (buf, register_size (gdbarch, regnum), natN_val);
766 else if (regnum == VBOF_REGNUM)
768 /* A virtual register frame start is provided for user convenience.
769 It can be calculated as the bsp - sof (sizeof frame). */
773 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
774 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
776 /* The bsp points at the end of the register frame so we
777 subtract the size of frame from it to get beginning of frame. */
778 vbsp = rse_address_add (bsp, -(cfm & 0x7f));
779 store_unsigned_integer (buf, register_size (gdbarch, regnum), vbsp);
781 else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
787 regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
788 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
790 if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
792 /* Fetch predicate register rename base from current frame
793 marker for this frame. */
794 int rrb_pr = (cfm >> 32) & 0x3f;
796 /* Adjust the register number to account for register rotation. */
798 + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
800 prN_val = (pr & (1LL << (regnum - VP0_REGNUM))) != 0;
801 store_unsigned_integer (buf, register_size (gdbarch, regnum), prN_val);
804 memset (buf, 0, register_size (gdbarch, regnum));
808 ia64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
809 int regnum, const gdb_byte *buf)
811 if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
816 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
817 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
819 bsp = rse_address_add (bsp, -(cfm & 0x7f));
821 if ((cfm & 0x7f) > regnum - V32_REGNUM)
823 ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
824 write_memory (reg_addr, (void *)buf, 8);
827 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
829 ULONGEST unatN_val, unat, unatN_mask;
830 regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
831 unatN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
832 unatN_mask = (1LL << (regnum - IA64_NAT0_REGNUM));
835 else if (unatN_val == 1)
837 regcache_cooked_write_unsigned (regcache, IA64_UNAT_REGNUM, unat);
839 else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
844 CORE_ADDR gr_addr = 0;
845 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
846 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
848 /* The bsp points at the end of the register frame so we
849 subtract the size of frame from it to get start of register frame. */
850 bsp = rse_address_add (bsp, -(cfm & 0x7f));
852 if ((cfm & 0x7f) > regnum - V32_REGNUM)
853 gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
855 natN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
857 if (gr_addr != 0 && (natN_val == 0 || natN_val == 1))
859 /* Compute address of nat collection bits. */
860 CORE_ADDR nat_addr = gr_addr | 0x1f8;
861 CORE_ADDR nat_collection;
862 int natN_bit = (gr_addr >> 3) & 0x3f;
863 ULONGEST natN_mask = (1LL << natN_bit);
864 /* If our nat collection address is bigger than bsp, we have to get
865 the nat collection from rnat. Otherwise, we fetch the nat
866 collection from the computed address. */
869 regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
871 nat_collection |= natN_mask;
873 nat_collection &= ~natN_mask;
874 regcache_cooked_write_unsigned (regcache, IA64_RNAT_REGNUM, nat_collection);
879 nat_collection = read_memory_integer (nat_addr, 8);
881 nat_collection |= natN_mask;
883 nat_collection &= ~natN_mask;
884 store_unsigned_integer (nat_buf, register_size (gdbarch, regnum), nat_collection);
885 write_memory (nat_addr, nat_buf, 8);
889 else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
896 regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
897 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
899 if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
901 /* Fetch predicate register rename base from current frame
902 marker for this frame. */
903 int rrb_pr = (cfm >> 32) & 0x3f;
905 /* Adjust the register number to account for register rotation. */
907 + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
909 prN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
910 prN_mask = (1LL << (regnum - VP0_REGNUM));
913 else if (prN_val == 1)
915 regcache_cooked_write_unsigned (regcache, IA64_PR_REGNUM, pr);
919 /* The ia64 needs to convert between various ieee floating-point formats
920 and the special ia64 floating point register format. */
923 ia64_convert_register_p (struct gdbarch *gdbarch, int regno, struct type *type)
925 return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM
926 && type != builtin_type_ia64_ext);
930 ia64_register_to_value (struct frame_info *frame, int regnum,
931 struct type *valtype, gdb_byte *out)
933 char in[MAX_REGISTER_SIZE];
934 frame_register_read (frame, regnum, in);
935 convert_typed_floating (in, builtin_type_ia64_ext, out, valtype);
939 ia64_value_to_register (struct frame_info *frame, int regnum,
940 struct type *valtype, const gdb_byte *in)
942 char out[MAX_REGISTER_SIZE];
943 convert_typed_floating (in, valtype, out, builtin_type_ia64_ext);
944 put_frame_register (frame, regnum, out);
948 /* Limit the number of skipped non-prologue instructions since examining
949 of the prologue is expensive. */
950 static int max_skip_non_prologue_insns = 40;
952 /* Given PC representing the starting address of a function, and
953 LIM_PC which is the (sloppy) limit to which to scan when looking
954 for a prologue, attempt to further refine this limit by using
955 the line data in the symbol table. If successful, a better guess
956 on where the prologue ends is returned, otherwise the previous
957 value of lim_pc is returned. TRUST_LIMIT is a pointer to a flag
958 which will be set to indicate whether the returned limit may be
959 used with no further scanning in the event that the function is
962 /* FIXME: cagney/2004-02-14: This function and logic have largely been
963 superseded by skip_prologue_using_sal. */
966 refine_prologue_limit (CORE_ADDR pc, CORE_ADDR lim_pc, int *trust_limit)
968 struct symtab_and_line prologue_sal;
969 CORE_ADDR start_pc = pc;
972 /* The prologue can not possibly go past the function end itself,
973 so we can already adjust LIM_PC accordingly. */
974 if (find_pc_partial_function (pc, NULL, NULL, &end_pc) && end_pc < lim_pc)
977 /* Start off not trusting the limit. */
980 prologue_sal = find_pc_line (pc, 0);
981 if (prologue_sal.line != 0)
984 CORE_ADDR addr = prologue_sal.end;
986 /* Handle the case in which compiler's optimizer/scheduler
987 has moved instructions into the prologue. We scan ahead
988 in the function looking for address ranges whose corresponding
989 line number is less than or equal to the first one that we
990 found for the function. (It can be less than when the
991 scheduler puts a body instruction before the first prologue
993 for (i = 2 * max_skip_non_prologue_insns;
994 i > 0 && (lim_pc == 0 || addr < lim_pc);
997 struct symtab_and_line sal;
999 sal = find_pc_line (addr, 0);
1002 if (sal.line <= prologue_sal.line
1003 && sal.symtab == prologue_sal.symtab)
1010 if (lim_pc == 0 || prologue_sal.end < lim_pc)
1012 lim_pc = prologue_sal.end;
1013 if (start_pc == get_pc_function_start (lim_pc))
1020 #define isScratch(_regnum_) ((_regnum_) == 2 || (_regnum_) == 3 \
1021 || (8 <= (_regnum_) && (_regnum_) <= 11) \
1022 || (14 <= (_regnum_) && (_regnum_) <= 31))
1023 #define imm9(_instr_) \
1024 ( ((((_instr_) & 0x01000000000LL) ? -1 : 0) << 8) \
1025 | (((_instr_) & 0x00008000000LL) >> 20) \
1026 | (((_instr_) & 0x00000001fc0LL) >> 6))
1028 /* Allocate and initialize a frame cache. */
1030 static struct ia64_frame_cache *
1031 ia64_alloc_frame_cache (void)
1033 struct ia64_frame_cache *cache;
1036 cache = FRAME_OBSTACK_ZALLOC (struct ia64_frame_cache);
1042 cache->prev_cfm = 0;
1048 cache->frameless = 1;
1050 for (i = 0; i < NUM_IA64_RAW_REGS; i++)
1051 cache->saved_regs[i] = 0;
1057 examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *next_frame, struct ia64_frame_cache *cache)
1060 CORE_ADDR last_prologue_pc = pc;
1061 instruction_type it;
1066 int unat_save_reg = 0;
1067 int pr_save_reg = 0;
1068 int mem_stack_frame_size = 0;
1070 CORE_ADDR spill_addr = 0;
1073 char reg_contents[256];
1079 CORE_ADDR bof, sor, sol, sof, cfm, rrb_gr;
1081 memset (instores, 0, sizeof instores);
1082 memset (infpstores, 0, sizeof infpstores);
1083 memset (reg_contents, 0, sizeof reg_contents);
1085 if (cache->after_prologue != 0
1086 && cache->after_prologue <= lim_pc)
1087 return cache->after_prologue;
1089 lim_pc = refine_prologue_limit (pc, lim_pc, &trust_limit);
1090 next_pc = fetch_instruction (pc, &it, &instr);
1092 /* We want to check if we have a recognizable function start before we
1093 look ahead for a prologue. */
1094 if (pc < lim_pc && next_pc
1095 && it == M && ((instr & 0x1ee0000003fLL) == 0x02c00000000LL))
1097 /* alloc - start of a regular function. */
1098 int sor = (int) ((instr & 0x00078000000LL) >> 27);
1099 int sol = (int) ((instr & 0x00007f00000LL) >> 20);
1100 int sof = (int) ((instr & 0x000000fe000LL) >> 13);
1101 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1103 /* Verify that the current cfm matches what we think is the
1104 function start. If we have somehow jumped within a function,
1105 we do not want to interpret the prologue and calculate the
1106 addresses of various registers such as the return address.
1107 We will instead treat the frame as frameless. */
1109 (sof == (cache->cfm & 0x7f) &&
1110 sol == ((cache->cfm >> 7) & 0x7f)))
1114 last_prologue_pc = next_pc;
1119 /* Look for a leaf routine. */
1120 if (pc < lim_pc && next_pc
1121 && (it == I || it == M)
1122 && ((instr & 0x1ee00000000LL) == 0x10800000000LL))
1124 /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
1125 int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
1126 | ((instr & 0x001f8000000LL) >> 20)
1127 | ((instr & 0x000000fe000LL) >> 13));
1128 int rM = (int) ((instr & 0x00007f00000LL) >> 20);
1129 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1130 int qp = (int) (instr & 0x0000000003fLL);
1131 if (qp == 0 && rN == 2 && imm == 0 && rM == 12 && fp_reg == 0)
1133 /* mov r2, r12 - beginning of leaf routine */
1135 last_prologue_pc = next_pc;
1139 /* If we don't recognize a regular function or leaf routine, we are
1145 last_prologue_pc = lim_pc;
1149 /* Loop, looking for prologue instructions, keeping track of
1150 where preserved registers were spilled. */
1153 next_pc = fetch_instruction (pc, &it, &instr);
1157 if (it == B && ((instr & 0x1e1f800003fLL) != 0x04000000000LL))
1159 /* Exit loop upon hitting a non-nop branch instruction. */
1164 else if (((instr & 0x3fLL) != 0LL) &&
1165 (frameless || ret_reg != 0))
1167 /* Exit loop upon hitting a predicated instruction if
1168 we already have the return register or if we are frameless. */
1173 else if (it == I && ((instr & 0x1eff8000000LL) == 0x00188000000LL))
1176 int b2 = (int) ((instr & 0x0000000e000LL) >> 13);
1177 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1178 int qp = (int) (instr & 0x0000000003f);
1180 if (qp == 0 && b2 == 0 && rN >= 32 && ret_reg == 0)
1183 last_prologue_pc = next_pc;
1186 else if ((it == I || it == M)
1187 && ((instr & 0x1ee00000000LL) == 0x10800000000LL))
1189 /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
1190 int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
1191 | ((instr & 0x001f8000000LL) >> 20)
1192 | ((instr & 0x000000fe000LL) >> 13));
1193 int rM = (int) ((instr & 0x00007f00000LL) >> 20);
1194 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1195 int qp = (int) (instr & 0x0000000003fLL);
1197 if (qp == 0 && rN >= 32 && imm == 0 && rM == 12 && fp_reg == 0)
1201 last_prologue_pc = next_pc;
1203 else if (qp == 0 && rN == 12 && rM == 12)
1205 /* adds r12, -mem_stack_frame_size, r12 */
1206 mem_stack_frame_size -= imm;
1207 last_prologue_pc = next_pc;
1209 else if (qp == 0 && rN == 2
1210 && ((rM == fp_reg && fp_reg != 0) || rM == 12))
1212 char buf[MAX_REGISTER_SIZE];
1213 CORE_ADDR saved_sp = 0;
1214 /* adds r2, spilloffset, rFramePointer
1216 adds r2, spilloffset, r12
1218 Get ready for stf.spill or st8.spill instructions.
1219 The address to start spilling at is loaded into r2.
1220 FIXME: Why r2? That's what gcc currently uses; it
1221 could well be different for other compilers. */
1223 /* Hmm... whether or not this will work will depend on
1224 where the pc is. If it's still early in the prologue
1225 this'll be wrong. FIXME */
1228 frame_unwind_register (next_frame, sp_regnum, buf);
1229 saved_sp = extract_unsigned_integer (buf, 8);
1231 spill_addr = saved_sp
1232 + (rM == 12 ? 0 : mem_stack_frame_size)
1235 last_prologue_pc = next_pc;
1237 else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM] &&
1238 rN < 256 && imm == 0)
1240 /* mov rN, rM where rM is an input register */
1241 reg_contents[rN] = rM;
1242 last_prologue_pc = next_pc;
1244 else if (frameless && qp == 0 && rN == fp_reg && imm == 0 &&
1248 last_prologue_pc = next_pc;
1253 && ( ((instr & 0x1efc0000000LL) == 0x0eec0000000LL)
1254 || ((instr & 0x1ffc8000000LL) == 0x0cec0000000LL) ))
1256 /* stf.spill [rN] = fM, imm9
1258 stf.spill [rN] = fM */
1260 int imm = imm9(instr);
1261 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
1262 int fM = (int) ((instr & 0x000000fe000LL) >> 13);
1263 int qp = (int) (instr & 0x0000000003fLL);
1264 if (qp == 0 && rN == spill_reg && spill_addr != 0
1265 && ((2 <= fM && fM <= 5) || (16 <= fM && fM <= 31)))
1267 cache->saved_regs[IA64_FR0_REGNUM + fM] = spill_addr;
1269 if ((instr & 0x1efc0000000LL) == 0x0eec0000000LL)
1272 spill_addr = 0; /* last one; must be done */
1273 last_prologue_pc = next_pc;
1276 else if ((it == M && ((instr & 0x1eff8000000LL) == 0x02110000000LL))
1277 || (it == I && ((instr & 0x1eff8000000LL) == 0x00050000000LL)) )
1283 int arM = (int) ((instr & 0x00007f00000LL) >> 20);
1284 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1285 int qp = (int) (instr & 0x0000000003fLL);
1286 if (qp == 0 && isScratch (rN) && arM == 36 /* ar.unat */)
1288 /* We have something like "mov.m r3 = ar.unat". Remember the
1289 r3 (or whatever) and watch for a store of this register... */
1291 last_prologue_pc = next_pc;
1294 else if (it == I && ((instr & 0x1eff8000000LL) == 0x00198000000LL))
1297 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
1298 int qp = (int) (instr & 0x0000000003fLL);
1299 if (qp == 0 && isScratch (rN))
1302 last_prologue_pc = next_pc;
1306 && ( ((instr & 0x1ffc8000000LL) == 0x08cc0000000LL)
1307 || ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)))
1311 st8 [rN] = rM, imm9 */
1312 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
1313 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1314 int qp = (int) (instr & 0x0000000003fLL);
1315 int indirect = rM < 256 ? reg_contents[rM] : 0;
1316 if (qp == 0 && rN == spill_reg && spill_addr != 0
1317 && (rM == unat_save_reg || rM == pr_save_reg))
1319 /* We've found a spill of either the UNAT register or the PR
1320 register. (Well, not exactly; what we've actually found is
1321 a spill of the register that UNAT or PR was moved to).
1322 Record that fact and move on... */
1323 if (rM == unat_save_reg)
1325 /* Track UNAT register */
1326 cache->saved_regs[IA64_UNAT_REGNUM] = spill_addr;
1331 /* Track PR register */
1332 cache->saved_regs[IA64_PR_REGNUM] = spill_addr;
1335 if ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)
1336 /* st8 [rN] = rM, imm9 */
1337 spill_addr += imm9(instr);
1339 spill_addr = 0; /* must be done spilling */
1340 last_prologue_pc = next_pc;
1342 else if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
1344 /* Allow up to one store of each input register. */
1345 instores[rM-32] = 1;
1346 last_prologue_pc = next_pc;
1348 else if (qp == 0 && 32 <= indirect && indirect < 40 &&
1349 !instores[indirect-32])
1351 /* Allow an indirect store of an input register. */
1352 instores[indirect-32] = 1;
1353 last_prologue_pc = next_pc;
1356 else if (it == M && ((instr & 0x1ff08000000LL) == 0x08c00000000LL))
1363 Note that the st8 case is handled in the clause above.
1365 Advance over stores of input registers. One store per input
1366 register is permitted. */
1367 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1368 int qp = (int) (instr & 0x0000000003fLL);
1369 int indirect = rM < 256 ? reg_contents[rM] : 0;
1370 if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
1372 instores[rM-32] = 1;
1373 last_prologue_pc = next_pc;
1375 else if (qp == 0 && 32 <= indirect && indirect < 40 &&
1376 !instores[indirect-32])
1378 /* Allow an indirect store of an input register. */
1379 instores[indirect-32] = 1;
1380 last_prologue_pc = next_pc;
1383 else if (it == M && ((instr & 0x1ff88000000LL) == 0x0cc80000000LL))
1390 Advance over stores of floating point input registers. Again
1391 one store per register is permitted */
1392 int fM = (int) ((instr & 0x000000fe000LL) >> 13);
1393 int qp = (int) (instr & 0x0000000003fLL);
1394 if (qp == 0 && 8 <= fM && fM < 16 && !infpstores[fM - 8])
1396 infpstores[fM-8] = 1;
1397 last_prologue_pc = next_pc;
1401 && ( ((instr & 0x1ffc8000000LL) == 0x08ec0000000LL)
1402 || ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)))
1404 /* st8.spill [rN] = rM
1406 st8.spill [rN] = rM, imm9 */
1407 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
1408 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1409 int qp = (int) (instr & 0x0000000003fLL);
1410 if (qp == 0 && rN == spill_reg && 4 <= rM && rM <= 7)
1412 /* We've found a spill of one of the preserved general purpose
1413 regs. Record the spill address and advance the spill
1414 register if appropriate. */
1415 cache->saved_regs[IA64_GR0_REGNUM + rM] = spill_addr;
1416 if ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)
1417 /* st8.spill [rN] = rM, imm9 */
1418 spill_addr += imm9(instr);
1420 spill_addr = 0; /* Done spilling */
1421 last_prologue_pc = next_pc;
1428 /* If not frameless and we aren't called by skip_prologue, then we need to calculate
1429 registers for the previous frame which will be needed later. */
1431 if (!frameless && next_frame)
1433 /* Extract the size of the rotating portion of the stack
1434 frame and the register rename base from the current
1440 rrb_gr = (cfm >> 18) & 0x7f;
1442 /* Find the bof (beginning of frame). */
1443 bof = rse_address_add (cache->bsp, -sof);
1445 for (i = 0, addr = bof;
1449 if (IS_NaT_COLLECTION_ADDR (addr))
1453 if (i+32 == cfm_reg)
1454 cache->saved_regs[IA64_CFM_REGNUM] = addr;
1455 if (i+32 == ret_reg)
1456 cache->saved_regs[IA64_VRAP_REGNUM] = addr;
1458 cache->saved_regs[IA64_VFP_REGNUM] = addr;
1461 /* For the previous argument registers we require the previous bof.
1462 If we can't find the previous cfm, then we can do nothing. */
1464 if (cache->saved_regs[IA64_CFM_REGNUM] != 0)
1466 cfm = read_memory_integer (cache->saved_regs[IA64_CFM_REGNUM], 8);
1468 else if (cfm_reg != 0)
1470 frame_unwind_register (next_frame, cfm_reg, buf);
1471 cfm = extract_unsigned_integer (buf, 8);
1473 cache->prev_cfm = cfm;
1477 sor = ((cfm >> 14) & 0xf) * 8;
1479 sol = (cfm >> 7) & 0x7f;
1480 rrb_gr = (cfm >> 18) & 0x7f;
1482 /* The previous bof only requires subtraction of the sol (size of locals)
1483 due to the overlap between output and input of subsequent frames. */
1484 bof = rse_address_add (bof, -sol);
1486 for (i = 0, addr = bof;
1490 if (IS_NaT_COLLECTION_ADDR (addr))
1495 cache->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
1498 cache->saved_regs[IA64_GR32_REGNUM + i] = addr;
1504 /* Try and trust the lim_pc value whenever possible. */
1505 if (trust_limit && lim_pc >= last_prologue_pc)
1506 last_prologue_pc = lim_pc;
1508 cache->frameless = frameless;
1509 cache->after_prologue = last_prologue_pc;
1510 cache->mem_stack_frame_size = mem_stack_frame_size;
1511 cache->fp_reg = fp_reg;
1513 return last_prologue_pc;
1517 ia64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
1519 struct ia64_frame_cache cache;
1521 cache.after_prologue = 0;
1525 /* Call examine_prologue with - as third argument since we don't have a next frame pointer to send. */
1526 return examine_prologue (pc, pc+1024, 0, &cache);
1530 /* Normal frames. */
1532 static struct ia64_frame_cache *
1533 ia64_frame_cache (struct frame_info *next_frame, void **this_cache)
1535 struct ia64_frame_cache *cache;
1537 CORE_ADDR cfm, sof, sol, bsp, psr;
1543 cache = ia64_alloc_frame_cache ();
1544 *this_cache = cache;
1546 frame_unwind_register (next_frame, sp_regnum, buf);
1547 cache->saved_sp = extract_unsigned_integer (buf, 8);
1549 /* We always want the bsp to point to the end of frame.
1550 This way, we can always get the beginning of frame (bof)
1551 by subtracting frame size. */
1552 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
1553 cache->bsp = extract_unsigned_integer (buf, 8);
1555 frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
1556 psr = extract_unsigned_integer (buf, 8);
1558 frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
1559 cfm = extract_unsigned_integer (buf, 8);
1561 cache->sof = (cfm & 0x7f);
1562 cache->sol = (cfm >> 7) & 0x7f;
1563 cache->sor = ((cfm >> 14) & 0xf) * 8;
1567 cache->pc = frame_func_unwind (next_frame, NORMAL_FRAME);
1570 examine_prologue (cache->pc, frame_pc_unwind (next_frame), next_frame, cache);
1572 cache->base = cache->saved_sp + cache->mem_stack_frame_size;
1578 ia64_frame_this_id (struct frame_info *next_frame, void **this_cache,
1579 struct frame_id *this_id)
1581 struct ia64_frame_cache *cache =
1582 ia64_frame_cache (next_frame, this_cache);
1584 /* If outermost frame, mark with null frame id. */
1585 if (cache->base == 0)
1586 (*this_id) = null_frame_id;
1588 (*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp);
1589 if (gdbarch_debug >= 1)
1590 fprintf_unfiltered (gdb_stdlog,
1591 "regular frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
1592 paddr_nz (this_id->code_addr),
1593 paddr_nz (this_id->stack_addr),
1594 paddr_nz (cache->bsp), next_frame);
1598 ia64_frame_prev_register (struct frame_info *next_frame, void **this_cache,
1599 int regnum, int *optimizedp,
1600 enum lval_type *lvalp, CORE_ADDR *addrp,
1601 int *realnump, gdb_byte *valuep)
1603 struct gdbarch *gdbarch = get_frame_arch (next_frame);
1604 struct ia64_frame_cache *cache =
1605 ia64_frame_cache (next_frame, this_cache);
1606 char dummy_valp[MAX_REGISTER_SIZE];
1609 gdb_assert (regnum >= 0);
1611 if (!target_has_registers)
1612 error (_("No registers."));
1619 /* Rather than check each time if valuep is non-null, supply a dummy buffer
1620 when valuep is not supplied. */
1622 valuep = dummy_valp;
1624 memset (valuep, 0, register_size (gdbarch, regnum));
1626 if (regnum == gdbarch_sp_regnum (gdbarch))
1628 /* Handle SP values for all frames but the topmost. */
1629 store_unsigned_integer (valuep, register_size (gdbarch, regnum),
1632 else if (regnum == IA64_BSP_REGNUM)
1634 char cfm_valuep[MAX_REGISTER_SIZE];
1637 enum lval_type cfm_lval;
1639 CORE_ADDR bsp, prev_cfm, prev_bsp;
1641 /* We want to calculate the previous bsp as the end of the previous register stack frame.
1642 This corresponds to what the hardware bsp register will be if we pop the frame
1643 back which is why we might have been called. We know the beginning of the current
1644 frame is cache->bsp - cache->sof. This value in the previous frame points to
1645 the start of the output registers. We can calculate the end of that frame by adding
1646 the size of output (sof (size of frame) - sol (size of locals)). */
1647 ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
1648 &cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
1649 prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
1651 bsp = rse_address_add (cache->bsp, -(cache->sof));
1652 prev_bsp = rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f));
1654 store_unsigned_integer (valuep, register_size (gdbarch, regnum),
1657 else if (regnum == IA64_CFM_REGNUM)
1659 CORE_ADDR addr = cache->saved_regs[IA64_CFM_REGNUM];
1663 *lvalp = lval_memory;
1665 read_memory (addr, valuep, register_size (gdbarch, regnum));
1667 else if (cache->prev_cfm)
1668 store_unsigned_integer (valuep, register_size (gdbarch, regnum), cache->prev_cfm);
1669 else if (cache->frameless)
1672 frame_unwind_register (next_frame, IA64_PFS_REGNUM, valuep);
1675 else if (regnum == IA64_VFP_REGNUM)
1677 /* If the function in question uses an automatic register (r32-r127)
1678 for the frame pointer, it'll be found by ia64_find_saved_register()
1679 above. If the function lacks one of these frame pointers, we can
1680 still provide a value since we know the size of the frame. */
1681 CORE_ADDR vfp = cache->base;
1682 store_unsigned_integer (valuep, register_size (gdbarch, IA64_VFP_REGNUM), vfp);
1684 else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
1686 char pr_valuep[MAX_REGISTER_SIZE];
1689 enum lval_type pr_lval;
1692 ia64_frame_prev_register (next_frame, this_cache, IA64_PR_REGNUM,
1693 &pr_optim, &pr_lval, &pr_addr, &pr_realnum, pr_valuep);
1694 if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
1696 /* Fetch predicate register rename base from current frame
1697 marker for this frame. */
1698 int rrb_pr = (cache->cfm >> 32) & 0x3f;
1700 /* Adjust the register number to account for register rotation. */
1701 regnum = VP16_REGNUM
1702 + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
1704 prN_val = extract_bit_field ((unsigned char *) pr_valuep,
1705 regnum - VP0_REGNUM, 1);
1706 store_unsigned_integer (valuep, register_size (gdbarch, regnum), prN_val);
1708 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
1710 char unat_valuep[MAX_REGISTER_SIZE];
1713 enum lval_type unat_lval;
1714 CORE_ADDR unat_addr;
1716 ia64_frame_prev_register (next_frame, this_cache, IA64_UNAT_REGNUM,
1717 &unat_optim, &unat_lval, &unat_addr, &unat_realnum, unat_valuep);
1718 unatN_val = extract_bit_field ((unsigned char *) unat_valuep,
1719 regnum - IA64_NAT0_REGNUM, 1);
1720 store_unsigned_integer (valuep, register_size (gdbarch, regnum),
1723 else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
1726 /* Find address of general register corresponding to nat bit we're
1730 gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM
1734 /* Compute address of nat collection bits. */
1735 CORE_ADDR nat_addr = gr_addr | 0x1f8;
1737 CORE_ADDR nat_collection;
1739 /* If our nat collection address is bigger than bsp, we have to get
1740 the nat collection from rnat. Otherwise, we fetch the nat
1741 collection from the computed address. */
1742 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
1743 bsp = extract_unsigned_integer (buf, 8);
1744 if (nat_addr >= bsp)
1746 frame_unwind_register (next_frame, IA64_RNAT_REGNUM, buf);
1747 nat_collection = extract_unsigned_integer (buf, 8);
1750 nat_collection = read_memory_integer (nat_addr, 8);
1751 nat_bit = (gr_addr >> 3) & 0x3f;
1752 natval = (nat_collection >> nat_bit) & 1;
1755 store_unsigned_integer (valuep, register_size (gdbarch, regnum), natval);
1757 else if (regnum == IA64_IP_REGNUM)
1760 CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
1764 *lvalp = lval_memory;
1766 read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
1767 pc = extract_unsigned_integer (buf, 8);
1769 else if (cache->frameless)
1771 frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
1772 pc = extract_unsigned_integer (buf, 8);
1775 store_unsigned_integer (valuep, 8, pc);
1777 else if (regnum == IA64_PSR_REGNUM)
1779 /* We don't know how to get the complete previous PSR, but we need it for
1780 the slot information when we unwind the pc (pc is formed of IP register
1781 plus slot information from PSR). To get the previous slot information,
1782 we mask it off the return address. */
1783 ULONGEST slot_num = 0;
1786 CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
1788 frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
1789 psr = extract_unsigned_integer (buf, 8);
1793 *lvalp = lval_memory;
1795 read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
1796 pc = extract_unsigned_integer (buf, 8);
1798 else if (cache->frameless)
1801 frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
1802 pc = extract_unsigned_integer (buf, 8);
1804 psr &= ~(3LL << 41);
1805 slot_num = pc & 0x3LL;
1806 psr |= (CORE_ADDR)slot_num << 41;
1807 store_unsigned_integer (valuep, 8, psr);
1809 else if (regnum == IA64_BR0_REGNUM)
1812 CORE_ADDR addr = cache->saved_regs[IA64_BR0_REGNUM];
1815 *lvalp = lval_memory;
1817 read_memory (addr, buf, register_size (gdbarch, IA64_BR0_REGNUM));
1818 br0 = extract_unsigned_integer (buf, 8);
1820 store_unsigned_integer (valuep, 8, br0);
1822 else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
1823 (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
1826 if (regnum >= V32_REGNUM)
1827 regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
1828 addr = cache->saved_regs[regnum];
1831 *lvalp = lval_memory;
1833 read_memory (addr, valuep, register_size (gdbarch, regnum));
1835 else if (cache->frameless)
1837 char r_valuep[MAX_REGISTER_SIZE];
1840 enum lval_type r_lval;
1842 CORE_ADDR prev_cfm, prev_bsp, prev_bof;
1844 if (regnum >= V32_REGNUM)
1845 regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
1846 ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
1847 &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
1848 prev_cfm = extract_unsigned_integer (r_valuep, 8);
1849 ia64_frame_prev_register (next_frame, this_cache, IA64_BSP_REGNUM,
1850 &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
1851 prev_bsp = extract_unsigned_integer (r_valuep, 8);
1852 prev_bof = rse_address_add (prev_bsp, -(prev_cfm & 0x7f));
1854 addr = rse_address_add (prev_bof, (regnum - IA64_GR32_REGNUM));
1855 *lvalp = lval_memory;
1857 read_memory (addr, valuep, register_size (gdbarch, regnum));
1863 if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
1865 /* Fetch floating point register rename base from current
1866 frame marker for this frame. */
1867 int rrb_fr = (cache->cfm >> 25) & 0x7f;
1869 /* Adjust the floating point register number to account for
1870 register rotation. */
1871 regnum = IA64_FR32_REGNUM
1872 + ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
1875 /* If we have stored a memory address, access the register. */
1876 addr = cache->saved_regs[regnum];
1879 *lvalp = lval_memory;
1881 read_memory (addr, valuep, register_size (gdbarch, regnum));
1883 /* Otherwise, punt and get the current value of the register. */
1885 frame_unwind_register (next_frame, regnum, valuep);
1888 if (gdbarch_debug >= 1)
1889 fprintf_unfiltered (gdb_stdlog,
1890 "regular prev register <%d> <%s> is 0x%s\n", regnum,
1891 (((unsigned) regnum <= IA64_NAT127_REGNUM)
1892 ? ia64_register_names[regnum] : "r??"),
1893 paddr_nz (extract_unsigned_integer (valuep, 8)));
1896 static const struct frame_unwind ia64_frame_unwind =
1899 &ia64_frame_this_id,
1900 &ia64_frame_prev_register
1903 static const struct frame_unwind *
1904 ia64_frame_sniffer (struct frame_info *next_frame)
1906 return &ia64_frame_unwind;
1909 /* Signal trampolines. */
1912 ia64_sigtramp_frame_init_saved_regs (struct frame_info *next_frame,
1913 struct ia64_frame_cache *cache)
1915 struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (next_frame));
1917 if (tdep->sigcontext_register_address)
1921 cache->saved_regs[IA64_VRAP_REGNUM] =
1922 tdep->sigcontext_register_address (cache->base, IA64_IP_REGNUM);
1923 cache->saved_regs[IA64_CFM_REGNUM] =
1924 tdep->sigcontext_register_address (cache->base, IA64_CFM_REGNUM);
1925 cache->saved_regs[IA64_PSR_REGNUM] =
1926 tdep->sigcontext_register_address (cache->base, IA64_PSR_REGNUM);
1927 cache->saved_regs[IA64_BSP_REGNUM] =
1928 tdep->sigcontext_register_address (cache->base, IA64_BSP_REGNUM);
1929 cache->saved_regs[IA64_RNAT_REGNUM] =
1930 tdep->sigcontext_register_address (cache->base, IA64_RNAT_REGNUM);
1931 cache->saved_regs[IA64_CCV_REGNUM] =
1932 tdep->sigcontext_register_address (cache->base, IA64_CCV_REGNUM);
1933 cache->saved_regs[IA64_UNAT_REGNUM] =
1934 tdep->sigcontext_register_address (cache->base, IA64_UNAT_REGNUM);
1935 cache->saved_regs[IA64_FPSR_REGNUM] =
1936 tdep->sigcontext_register_address (cache->base, IA64_FPSR_REGNUM);
1937 cache->saved_regs[IA64_PFS_REGNUM] =
1938 tdep->sigcontext_register_address (cache->base, IA64_PFS_REGNUM);
1939 cache->saved_regs[IA64_LC_REGNUM] =
1940 tdep->sigcontext_register_address (cache->base, IA64_LC_REGNUM);
1941 for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
1942 cache->saved_regs[regno] =
1943 tdep->sigcontext_register_address (cache->base, regno);
1944 for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
1945 cache->saved_regs[regno] =
1946 tdep->sigcontext_register_address (cache->base, regno);
1947 for (regno = IA64_FR2_REGNUM; regno <= IA64_FR31_REGNUM; regno++)
1948 cache->saved_regs[regno] =
1949 tdep->sigcontext_register_address (cache->base, regno);
1953 static struct ia64_frame_cache *
1954 ia64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
1956 struct ia64_frame_cache *cache;
1964 cache = ia64_alloc_frame_cache ();
1966 frame_unwind_register (next_frame, sp_regnum, buf);
1967 /* Note that frame size is hard-coded below. We cannot calculate it
1968 via prologue examination. */
1969 cache->base = extract_unsigned_integer (buf, 8) + 16;
1971 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
1972 cache->bsp = extract_unsigned_integer (buf, 8);
1974 frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
1975 cache->cfm = extract_unsigned_integer (buf, 8);
1976 cache->sof = cache->cfm & 0x7f;
1978 ia64_sigtramp_frame_init_saved_regs (next_frame, cache);
1980 *this_cache = cache;
1985 ia64_sigtramp_frame_this_id (struct frame_info *next_frame,
1986 void **this_cache, struct frame_id *this_id)
1988 struct ia64_frame_cache *cache =
1989 ia64_sigtramp_frame_cache (next_frame, this_cache);
1991 (*this_id) = frame_id_build_special (cache->base, frame_pc_unwind (next_frame), cache->bsp);
1992 if (gdbarch_debug >= 1)
1993 fprintf_unfiltered (gdb_stdlog,
1994 "sigtramp frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
1995 paddr_nz (this_id->code_addr),
1996 paddr_nz (this_id->stack_addr),
1997 paddr_nz (cache->bsp), next_frame);
2001 ia64_sigtramp_frame_prev_register (struct frame_info *next_frame,
2003 int regnum, int *optimizedp,
2004 enum lval_type *lvalp, CORE_ADDR *addrp,
2005 int *realnump, gdb_byte *valuep)
2007 char dummy_valp[MAX_REGISTER_SIZE];
2008 char buf[MAX_REGISTER_SIZE];
2010 struct gdbarch *gdbarch = get_frame_arch (next_frame);
2011 struct ia64_frame_cache *cache =
2012 ia64_sigtramp_frame_cache (next_frame, this_cache);
2014 gdb_assert (regnum >= 0);
2016 if (!target_has_registers)
2017 error (_("No registers."));
2024 /* Rather than check each time if valuep is non-null, supply a dummy buffer
2025 when valuep is not supplied. */
2027 valuep = dummy_valp;
2029 memset (valuep, 0, register_size (gdbarch, regnum));
2031 if (regnum == IA64_IP_REGNUM)
2034 CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
2038 *lvalp = lval_memory;
2040 read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
2041 pc = extract_unsigned_integer (buf, 8);
2044 store_unsigned_integer (valuep, 8, pc);
2046 else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
2047 (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
2050 if (regnum >= V32_REGNUM)
2051 regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
2052 addr = cache->saved_regs[regnum];
2055 *lvalp = lval_memory;
2057 read_memory (addr, valuep, register_size (gdbarch, regnum));
2062 /* All other registers not listed above. */
2063 CORE_ADDR addr = cache->saved_regs[regnum];
2066 *lvalp = lval_memory;
2068 read_memory (addr, valuep, register_size (gdbarch, regnum));
2072 if (gdbarch_debug >= 1)
2073 fprintf_unfiltered (gdb_stdlog,
2074 "sigtramp prev register <%s> is 0x%s\n",
2075 (regnum < IA64_GR32_REGNUM
2076 || (regnum > IA64_GR127_REGNUM
2077 && regnum < LAST_PSEUDO_REGNUM))
2078 ? ia64_register_names[regnum]
2079 : (regnum < LAST_PSEUDO_REGNUM
2080 ? ia64_register_names[regnum-IA64_GR32_REGNUM+V32_REGNUM]
2082 paddr_nz (extract_unsigned_integer (valuep, 8)));
2085 static const struct frame_unwind ia64_sigtramp_frame_unwind =
2088 ia64_sigtramp_frame_this_id,
2089 ia64_sigtramp_frame_prev_register
2092 static const struct frame_unwind *
2093 ia64_sigtramp_frame_sniffer (struct frame_info *next_frame)
2095 struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (next_frame));
2096 if (tdep->pc_in_sigtramp)
2098 CORE_ADDR pc = frame_pc_unwind (next_frame);
2100 if (tdep->pc_in_sigtramp (pc))
2101 return &ia64_sigtramp_frame_unwind;
2109 ia64_frame_base_address (struct frame_info *next_frame, void **this_cache)
2111 struct ia64_frame_cache *cache =
2112 ia64_frame_cache (next_frame, this_cache);
2117 static const struct frame_base ia64_frame_base =
2120 ia64_frame_base_address,
2121 ia64_frame_base_address,
2122 ia64_frame_base_address
2125 #ifdef HAVE_LIBUNWIND_IA64_H
2127 struct ia64_unwind_table_entry
2129 unw_word_t start_offset;
2130 unw_word_t end_offset;
2131 unw_word_t info_offset;
2134 static __inline__ uint64_t
2135 ia64_rse_slot_num (uint64_t addr)
2137 return (addr >> 3) & 0x3f;
2140 /* Skip over a designated number of registers in the backing
2141 store, remembering every 64th position is for NAT. */
2142 static __inline__ uint64_t
2143 ia64_rse_skip_regs (uint64_t addr, long num_regs)
2145 long delta = ia64_rse_slot_num(addr) + num_regs;
2149 return addr + ((num_regs + delta/0x3f) << 3);
2152 /* Gdb libunwind-frame callback function to convert from an ia64 gdb register
2153 number to a libunwind register number. */
2155 ia64_gdb2uw_regnum (int regnum)
2157 if (regnum == sp_regnum)
2159 else if (regnum == IA64_BSP_REGNUM)
2160 return UNW_IA64_BSP;
2161 else if ((unsigned) (regnum - IA64_GR0_REGNUM) < 128)
2162 return UNW_IA64_GR + (regnum - IA64_GR0_REGNUM);
2163 else if ((unsigned) (regnum - V32_REGNUM) < 95)
2164 return UNW_IA64_GR + 32 + (regnum - V32_REGNUM);
2165 else if ((unsigned) (regnum - IA64_FR0_REGNUM) < 128)
2166 return UNW_IA64_FR + (regnum - IA64_FR0_REGNUM);
2167 else if ((unsigned) (regnum - IA64_PR0_REGNUM) < 64)
2169 else if ((unsigned) (regnum - IA64_BR0_REGNUM) < 8)
2170 return UNW_IA64_BR + (regnum - IA64_BR0_REGNUM);
2171 else if (regnum == IA64_PR_REGNUM)
2173 else if (regnum == IA64_IP_REGNUM)
2175 else if (regnum == IA64_CFM_REGNUM)
2176 return UNW_IA64_CFM;
2177 else if ((unsigned) (regnum - IA64_AR0_REGNUM) < 128)
2178 return UNW_IA64_AR + (regnum - IA64_AR0_REGNUM);
2179 else if ((unsigned) (regnum - IA64_NAT0_REGNUM) < 128)
2180 return UNW_IA64_NAT + (regnum - IA64_NAT0_REGNUM);
2185 /* Gdb libunwind-frame callback function to convert from a libunwind register
2186 number to a ia64 gdb register number. */
2188 ia64_uw2gdb_regnum (int uw_regnum)
2190 if (uw_regnum == UNW_IA64_SP)
2192 else if (uw_regnum == UNW_IA64_BSP)
2193 return IA64_BSP_REGNUM;
2194 else if ((unsigned) (uw_regnum - UNW_IA64_GR) < 32)
2195 return IA64_GR0_REGNUM + (uw_regnum - UNW_IA64_GR);
2196 else if ((unsigned) (uw_regnum - UNW_IA64_GR) < 128)
2197 return V32_REGNUM + (uw_regnum - (IA64_GR0_REGNUM + 32));
2198 else if ((unsigned) (uw_regnum - UNW_IA64_FR) < 128)
2199 return IA64_FR0_REGNUM + (uw_regnum - UNW_IA64_FR);
2200 else if ((unsigned) (uw_regnum - UNW_IA64_BR) < 8)
2201 return IA64_BR0_REGNUM + (uw_regnum - UNW_IA64_BR);
2202 else if (uw_regnum == UNW_IA64_PR)
2203 return IA64_PR_REGNUM;
2204 else if (uw_regnum == UNW_REG_IP)
2205 return IA64_IP_REGNUM;
2206 else if (uw_regnum == UNW_IA64_CFM)
2207 return IA64_CFM_REGNUM;
2208 else if ((unsigned) (uw_regnum - UNW_IA64_AR) < 128)
2209 return IA64_AR0_REGNUM + (uw_regnum - UNW_IA64_AR);
2210 else if ((unsigned) (uw_regnum - UNW_IA64_NAT) < 128)
2211 return IA64_NAT0_REGNUM + (uw_regnum - UNW_IA64_NAT);
2216 /* Gdb libunwind-frame callback function to reveal if register is a float
2219 ia64_is_fpreg (int uw_regnum)
2221 return unw_is_fpreg (uw_regnum);
2224 /* Libunwind callback accessor function for general registers. */
2226 ia64_access_reg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_word_t *val,
2227 int write, void *arg)
2229 int regnum = ia64_uw2gdb_regnum (uw_regnum);
2230 unw_word_t bsp, sof, sol, cfm, psr, ip;
2231 struct frame_info *next_frame = arg;
2232 long new_sof, old_sof;
2233 char buf[MAX_REGISTER_SIZE];
2235 /* We never call any libunwind routines that need to write registers. */
2236 gdb_assert (!write);
2241 /* Libunwind expects to see the pc value which means the slot number
2242 from the psr must be merged with the ip word address. */
2243 frame_unwind_register (next_frame, IA64_IP_REGNUM, buf);
2244 ip = extract_unsigned_integer (buf, 8);
2245 frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
2246 psr = extract_unsigned_integer (buf, 8);
2247 *val = ip | ((psr >> 41) & 0x3);
2250 case UNW_IA64_AR_BSP:
2251 /* Libunwind expects to see the beginning of the current register
2252 frame so we must account for the fact that ptrace() will return a value
2253 for bsp that points *after* the current register frame. */
2254 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
2255 bsp = extract_unsigned_integer (buf, 8);
2256 frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
2257 cfm = extract_unsigned_integer (buf, 8);
2259 *val = ia64_rse_skip_regs (bsp, -sof);
2262 case UNW_IA64_AR_BSPSTORE:
2263 /* Libunwind wants bspstore to be after the current register frame.
2264 This is what ptrace() and gdb treats as the regular bsp value. */
2265 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
2266 *val = extract_unsigned_integer (buf, 8);
2270 /* For all other registers, just unwind the value directly. */
2271 frame_unwind_register (next_frame, regnum, buf);
2272 *val = extract_unsigned_integer (buf, 8);
2276 if (gdbarch_debug >= 1)
2277 fprintf_unfiltered (gdb_stdlog,
2278 " access_reg: from cache: %4s=0x%s\n",
2279 (((unsigned) regnum <= IA64_NAT127_REGNUM)
2280 ? ia64_register_names[regnum] : "r??"),
2285 /* Libunwind callback accessor function for floating-point registers. */
2287 ia64_access_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_fpreg_t *val,
2288 int write, void *arg)
2290 int regnum = ia64_uw2gdb_regnum (uw_regnum);
2291 struct frame_info *next_frame = arg;
2293 /* We never call any libunwind routines that need to write registers. */
2294 gdb_assert (!write);
2296 frame_unwind_register (next_frame, regnum, (char *) val);
2301 /* Libunwind callback accessor function for top-level rse registers. */
2303 ia64_access_rse_reg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_word_t *val,
2304 int write, void *arg)
2306 int regnum = ia64_uw2gdb_regnum (uw_regnum);
2307 unw_word_t bsp, sof, sol, cfm, psr, ip;
2308 struct regcache *regcache = arg;
2309 long new_sof, old_sof;
2310 char buf[MAX_REGISTER_SIZE];
2312 /* We never call any libunwind routines that need to write registers. */
2313 gdb_assert (!write);
2318 /* Libunwind expects to see the pc value which means the slot number
2319 from the psr must be merged with the ip word address. */
2320 regcache_cooked_read (regcache, IA64_IP_REGNUM, buf);
2321 ip = extract_unsigned_integer (buf, 8);
2322 regcache_cooked_read (regcache, IA64_PSR_REGNUM, buf);
2323 psr = extract_unsigned_integer (buf, 8);
2324 *val = ip | ((psr >> 41) & 0x3);
2327 case UNW_IA64_AR_BSP:
2328 /* Libunwind expects to see the beginning of the current register
2329 frame so we must account for the fact that ptrace() will return a value
2330 for bsp that points *after* the current register frame. */
2331 regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf);
2332 bsp = extract_unsigned_integer (buf, 8);
2333 regcache_cooked_read (regcache, IA64_CFM_REGNUM, buf);
2334 cfm = extract_unsigned_integer (buf, 8);
2336 *val = ia64_rse_skip_regs (bsp, -sof);
2339 case UNW_IA64_AR_BSPSTORE:
2340 /* Libunwind wants bspstore to be after the current register frame.
2341 This is what ptrace() and gdb treats as the regular bsp value. */
2342 regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf);
2343 *val = extract_unsigned_integer (buf, 8);
2347 /* For all other registers, just unwind the value directly. */
2348 regcache_cooked_read (regcache, regnum, buf);
2349 *val = extract_unsigned_integer (buf, 8);
2353 if (gdbarch_debug >= 1)
2354 fprintf_unfiltered (gdb_stdlog,
2355 " access_rse_reg: from cache: %4s=0x%s\n",
2356 (((unsigned) regnum <= IA64_NAT127_REGNUM)
2357 ? ia64_register_names[regnum] : "r??"),
2363 /* Libunwind callback accessor function for top-level fp registers. */
2365 ia64_access_rse_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum,
2366 unw_fpreg_t *val, int write, void *arg)
2368 int regnum = ia64_uw2gdb_regnum (uw_regnum);
2369 struct regcache *regcache = arg;
2371 /* We never call any libunwind routines that need to write registers. */
2372 gdb_assert (!write);
2374 regcache_cooked_read (regcache, regnum, (char *) val);
2379 /* Libunwind callback accessor function for accessing memory. */
2381 ia64_access_mem (unw_addr_space_t as,
2382 unw_word_t addr, unw_word_t *val,
2383 int write, void *arg)
2385 if (addr - KERNEL_START < ktab_size)
2387 unw_word_t *laddr = (unw_word_t*) ((char *) ktab
2388 + (addr - KERNEL_START));
2397 /* XXX do we need to normalize byte-order here? */
2399 return target_write_memory (addr, (char *) val, sizeof (unw_word_t));
2401 return target_read_memory (addr, (char *) val, sizeof (unw_word_t));
2404 /* Call low-level function to access the kernel unwind table. */
2406 getunwind_table (gdb_byte **buf_p)
2410 /* FIXME drow/2005-09-10: This code used to call
2411 ia64_linux_xfer_unwind_table directly to fetch the unwind table
2412 for the currently running ia64-linux kernel. That data should
2413 come from the core file and be accessed via the auxv vector; if
2414 we want to preserve fall back to the running kernel's table, then
2415 we should find a way to override the corefile layer's
2416 xfer_partial method. */
2418 x = target_read_alloc (¤t_target, TARGET_OBJECT_UNWIND_TABLE,
2424 /* Get the kernel unwind table. */
2426 get_kernel_table (unw_word_t ip, unw_dyn_info_t *di)
2428 static struct ia64_table_entry *etab;
2435 size = getunwind_table (&ktab_buf);
2437 return -UNW_ENOINFO;
2439 ktab = (struct ia64_table_entry *) ktab_buf;
2442 for (etab = ktab; etab->start_offset; ++etab)
2443 etab->info_offset += KERNEL_START;
2446 if (ip < ktab[0].start_offset || ip >= etab[-1].end_offset)
2447 return -UNW_ENOINFO;
2449 di->format = UNW_INFO_FORMAT_TABLE;
2451 di->start_ip = ktab[0].start_offset;
2452 di->end_ip = etab[-1].end_offset;
2453 di->u.ti.name_ptr = (unw_word_t) "<kernel>";
2454 di->u.ti.segbase = 0;
2455 di->u.ti.table_len = ((char *) etab - (char *) ktab) / sizeof (unw_word_t);
2456 di->u.ti.table_data = (unw_word_t *) ktab;
2458 if (gdbarch_debug >= 1)
2459 fprintf_unfiltered (gdb_stdlog, "get_kernel_table: found table `%s': "
2460 "segbase=0x%s, length=%s, gp=0x%s\n",
2461 (char *) di->u.ti.name_ptr,
2462 paddr_nz (di->u.ti.segbase),
2463 paddr_u (di->u.ti.table_len),
2468 /* Find the unwind table entry for a specified address. */
2470 ia64_find_unwind_table (struct objfile *objfile, unw_word_t ip,
2471 unw_dyn_info_t *dip, void **buf)
2473 Elf_Internal_Phdr *phdr, *p_text = NULL, *p_unwind = NULL;
2474 Elf_Internal_Ehdr *ehdr;
2475 unw_word_t segbase = 0;
2476 CORE_ADDR load_base;
2480 bfd = objfile->obfd;
2482 ehdr = elf_tdata (bfd)->elf_header;
2483 phdr = elf_tdata (bfd)->phdr;
2485 load_base = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2487 for (i = 0; i < ehdr->e_phnum; ++i)
2489 switch (phdr[i].p_type)
2492 if ((unw_word_t) (ip - load_base - phdr[i].p_vaddr)
2497 case PT_IA_64_UNWIND:
2498 p_unwind = phdr + i;
2506 if (!p_text || !p_unwind)
2507 return -UNW_ENOINFO;
2509 /* Verify that the segment that contains the IP also contains
2510 the static unwind table. If not, we may be in the Linux kernel's
2511 DSO gate page in which case the unwind table is another segment.
2512 Otherwise, we are dealing with runtime-generated code, for which we
2513 have no info here. */
2514 segbase = p_text->p_vaddr + load_base;
2516 if ((p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz)
2519 for (i = 0; i < ehdr->e_phnum; ++i)
2521 if (phdr[i].p_type == PT_LOAD
2522 && (p_unwind->p_vaddr - phdr[i].p_vaddr) < phdr[i].p_memsz)
2525 /* Get the segbase from the section containing the
2527 segbase = phdr[i].p_vaddr + load_base;
2531 return -UNW_ENOINFO;
2534 dip->start_ip = p_text->p_vaddr + load_base;
2535 dip->end_ip = dip->start_ip + p_text->p_memsz;
2536 dip->gp = ia64_find_global_pointer (ip);
2537 dip->format = UNW_INFO_FORMAT_REMOTE_TABLE;
2538 dip->u.rti.name_ptr = (unw_word_t) bfd_get_filename (bfd);
2539 dip->u.rti.segbase = segbase;
2540 dip->u.rti.table_len = p_unwind->p_memsz / sizeof (unw_word_t);
2541 dip->u.rti.table_data = p_unwind->p_vaddr + load_base;
2546 /* Libunwind callback accessor function to acquire procedure unwind-info. */
2548 ia64_find_proc_info_x (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
2549 int need_unwind_info, void *arg)
2551 struct obj_section *sec = find_pc_section (ip);
2558 /* XXX This only works if the host and the target architecture are
2559 both ia64 and if the have (more or less) the same kernel
2561 if (get_kernel_table (ip, &di) < 0)
2562 return -UNW_ENOINFO;
2564 if (gdbarch_debug >= 1)
2565 fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: 0x%s -> "
2566 "(name=`%s',segbase=0x%s,start=0x%s,end=0x%s,gp=0x%s,"
2567 "length=%s,data=0x%s)\n",
2568 paddr_nz (ip), (char *)di.u.ti.name_ptr,
2569 paddr_nz (di.u.ti.segbase),
2570 paddr_nz (di.start_ip), paddr_nz (di.end_ip),
2572 paddr_u (di.u.ti.table_len),
2573 paddr_nz ((CORE_ADDR)di.u.ti.table_data));
2577 ret = ia64_find_unwind_table (sec->objfile, ip, &di, &buf);
2581 if (gdbarch_debug >= 1)
2582 fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: 0x%s -> "
2583 "(name=`%s',segbase=0x%s,start=0x%s,end=0x%s,gp=0x%s,"
2584 "length=%s,data=0x%s)\n",
2585 paddr_nz (ip), (char *)di.u.rti.name_ptr,
2586 paddr_nz (di.u.rti.segbase),
2587 paddr_nz (di.start_ip), paddr_nz (di.end_ip),
2589 paddr_u (di.u.rti.table_len),
2590 paddr_nz (di.u.rti.table_data));
2593 ret = libunwind_search_unwind_table (&as, ip, &di, pi, need_unwind_info,
2596 /* We no longer need the dyn info storage so free it. */
2602 /* Libunwind callback accessor function for cleanup. */
2604 ia64_put_unwind_info (unw_addr_space_t as,
2605 unw_proc_info_t *pip, void *arg)
2607 /* Nothing required for now. */
2610 /* Libunwind callback accessor function to get head of the dynamic
2611 unwind-info registration list. */
2613 ia64_get_dyn_info_list (unw_addr_space_t as,
2614 unw_word_t *dilap, void *arg)
2616 struct obj_section *text_sec;
2617 struct objfile *objfile;
2618 unw_word_t ip, addr;
2622 if (!libunwind_is_initialized ())
2623 return -UNW_ENOINFO;
2625 for (objfile = object_files; objfile; objfile = objfile->next)
2629 text_sec = objfile->sections + SECT_OFF_TEXT (objfile);
2630 ip = text_sec->addr;
2631 ret = ia64_find_unwind_table (objfile, ip, &di, &buf);
2634 addr = libunwind_find_dyn_list (as, &di, arg);
2635 /* We no longer need the dyn info storage so free it. */
2640 if (gdbarch_debug >= 1)
2641 fprintf_unfiltered (gdb_stdlog,
2642 "dynamic unwind table in objfile %s "
2643 "at 0x%s (gp=0x%s)\n",
2644 bfd_get_filename (objfile->obfd),
2645 paddr_nz (addr), paddr_nz (di.gp));
2651 return -UNW_ENOINFO;
2655 /* Frame interface functions for libunwind. */
2658 ia64_libunwind_frame_this_id (struct frame_info *next_frame, void **this_cache,
2659 struct frame_id *this_id)
2664 CORE_ADDR prev_ip, addr;
2665 int realnum, optimized;
2666 enum lval_type lval;
2669 libunwind_frame_this_id (next_frame, this_cache, &id);
2670 if (frame_id_eq (id, null_frame_id))
2672 (*this_id) = null_frame_id;
2676 /* We must add the bsp as the special address for frame comparison
2678 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
2679 bsp = extract_unsigned_integer (buf, 8);
2681 /* If the previous frame pc value is 0, then we are at the end of the stack
2682 and don't want to unwind past this frame. We return a null frame_id to
2684 libunwind_frame_prev_register (next_frame, this_cache, IA64_IP_REGNUM,
2685 &optimized, &lval, &addr, &realnum, buf);
2686 prev_ip = extract_unsigned_integer (buf, 8);
2689 (*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp);
2691 (*this_id) = null_frame_id;
2693 if (gdbarch_debug >= 1)
2694 fprintf_unfiltered (gdb_stdlog,
2695 "libunwind frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
2696 paddr_nz (id.code_addr), paddr_nz (id.stack_addr),
2697 paddr_nz (bsp), next_frame);
2701 ia64_libunwind_frame_prev_register (struct frame_info *next_frame,
2703 int regnum, int *optimizedp,
2704 enum lval_type *lvalp, CORE_ADDR *addrp,
2705 int *realnump, gdb_byte *valuep)
2709 struct gdbarch *gdbarch = get_frame_arch (next_frame);
2710 if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
2711 reg = IA64_PR_REGNUM;
2712 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
2713 reg = IA64_UNAT_REGNUM;
2715 /* Let libunwind do most of the work. */
2716 libunwind_frame_prev_register (next_frame, this_cache, reg,
2717 optimizedp, lvalp, addrp, realnump, valuep);
2719 /* No more to do if the value is not supposed to be supplied. */
2723 if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
2727 if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
2731 unsigned char buf[MAX_REGISTER_SIZE];
2733 /* Fetch predicate register rename base from current frame
2734 marker for this frame. */
2735 frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
2736 cfm = extract_unsigned_integer (buf, 8);
2737 rrb_pr = (cfm >> 32) & 0x3f;
2739 /* Adjust the register number to account for register rotation. */
2740 regnum = VP16_REGNUM
2741 + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
2743 prN_val = extract_bit_field ((unsigned char *) valuep,
2744 regnum - VP0_REGNUM, 1);
2745 store_unsigned_integer (valuep, register_size (gdbarch, regnum), prN_val);
2747 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
2751 unatN_val = extract_bit_field ((unsigned char *) valuep,
2752 regnum - IA64_NAT0_REGNUM, 1);
2753 store_unsigned_integer (valuep, register_size (gdbarch, regnum),
2756 else if (regnum == IA64_BSP_REGNUM)
2758 char cfm_valuep[MAX_REGISTER_SIZE];
2761 enum lval_type cfm_lval;
2763 CORE_ADDR bsp, prev_cfm, prev_bsp;
2765 /* We want to calculate the previous bsp as the end of the previous register stack frame.
2766 This corresponds to what the hardware bsp register will be if we pop the frame
2767 back which is why we might have been called. We know that libunwind will pass us back
2768 the beginning of the current frame so we should just add sof to it. */
2769 prev_bsp = extract_unsigned_integer (valuep, 8);
2770 libunwind_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
2771 &cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
2772 prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
2773 prev_bsp = rse_address_add (prev_bsp, (prev_cfm & 0x7f));
2775 store_unsigned_integer (valuep, register_size (gdbarch, regnum),
2779 if (gdbarch_debug >= 1)
2780 fprintf_unfiltered (gdb_stdlog,
2781 "libunwind prev register <%s> is 0x%s\n",
2782 (regnum < IA64_GR32_REGNUM
2783 || (regnum > IA64_GR127_REGNUM
2784 && regnum < LAST_PSEUDO_REGNUM))
2785 ? ia64_register_names[regnum]
2786 : (regnum < LAST_PSEUDO_REGNUM
2787 ? ia64_register_names[regnum-IA64_GR32_REGNUM+V32_REGNUM]
2789 paddr_nz (extract_unsigned_integer (valuep, 8)));
2792 static const struct frame_unwind ia64_libunwind_frame_unwind =
2795 ia64_libunwind_frame_this_id,
2796 ia64_libunwind_frame_prev_register,
2800 libunwind_frame_dealloc_cache
2803 static const struct frame_unwind *
2804 ia64_libunwind_frame_sniffer (struct frame_info *next_frame)
2806 if (libunwind_is_initialized () && libunwind_frame_sniffer (next_frame))
2807 return &ia64_libunwind_frame_unwind;
2813 ia64_libunwind_sigtramp_frame_this_id (struct frame_info *next_frame, void **this_cache,
2814 struct frame_id *this_id)
2821 libunwind_frame_this_id (next_frame, this_cache, &id);
2822 if (frame_id_eq (id, null_frame_id))
2824 (*this_id) = null_frame_id;
2828 /* We must add the bsp as the special address for frame comparison
2830 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
2831 bsp = extract_unsigned_integer (buf, 8);
2833 /* For a sigtramp frame, we don't make the check for previous ip being 0. */
2834 (*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp);
2836 if (gdbarch_debug >= 1)
2837 fprintf_unfiltered (gdb_stdlog,
2838 "libunwind sigtramp frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
2839 paddr_nz (id.code_addr), paddr_nz (id.stack_addr),
2840 paddr_nz (bsp), next_frame);
2844 ia64_libunwind_sigtramp_frame_prev_register (struct frame_info *next_frame,
2846 int regnum, int *optimizedp,
2847 enum lval_type *lvalp, CORE_ADDR *addrp,
2848 int *realnump, gdb_byte *valuep)
2852 CORE_ADDR prev_ip, addr;
2853 int realnum, optimized;
2854 enum lval_type lval;
2857 /* If the previous frame pc value is 0, then we want to use the SIGCONTEXT
2858 method of getting previous registers. */
2859 libunwind_frame_prev_register (next_frame, this_cache, IA64_IP_REGNUM,
2860 &optimized, &lval, &addr, &realnum, buf);
2861 prev_ip = extract_unsigned_integer (buf, 8);
2865 void *tmp_cache = NULL;
2866 ia64_sigtramp_frame_prev_register (next_frame, &tmp_cache, regnum, optimizedp, lvalp,
2867 addrp, realnump, valuep);
2870 ia64_libunwind_frame_prev_register (next_frame, this_cache, regnum, optimizedp, lvalp,
2871 addrp, realnump, valuep);
2874 static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind =
2877 ia64_libunwind_sigtramp_frame_this_id,
2878 ia64_libunwind_sigtramp_frame_prev_register
2881 static const struct frame_unwind *
2882 ia64_libunwind_sigtramp_frame_sniffer (struct frame_info *next_frame)
2884 if (libunwind_is_initialized ())
2886 if (libunwind_sigtramp_frame_sniffer (next_frame))
2887 return &ia64_libunwind_sigtramp_frame_unwind;
2891 return ia64_sigtramp_frame_sniffer (next_frame);
2894 /* Set of libunwind callback acccessor functions. */
2895 static unw_accessors_t ia64_unw_accessors =
2897 ia64_find_proc_info_x,
2898 ia64_put_unwind_info,
2899 ia64_get_dyn_info_list,
2907 /* Set of special libunwind callback acccessor functions specific for accessing
2908 the rse registers. At the top of the stack, we want libunwind to figure out
2909 how to read r32 - r127. Though usually they are found sequentially in memory
2910 starting from $bof, this is not always true. */
2911 static unw_accessors_t ia64_unw_rse_accessors =
2913 ia64_find_proc_info_x,
2914 ia64_put_unwind_info,
2915 ia64_get_dyn_info_list,
2917 ia64_access_rse_reg,
2918 ia64_access_rse_fpreg,
2923 /* Set of ia64 gdb libunwind-frame callbacks and data for generic libunwind-frame code to use. */
2924 static struct libunwind_descr ia64_libunwind_descr =
2929 &ia64_unw_accessors,
2930 &ia64_unw_rse_accessors,
2933 #endif /* HAVE_LIBUNWIND_IA64_H */
2936 ia64_use_struct_convention (struct type *type)
2938 struct type *float_elt_type;
2940 /* Don't use the struct convention for anything but structure,
2941 union, or array types. */
2942 if (!(TYPE_CODE (type) == TYPE_CODE_STRUCT
2943 || TYPE_CODE (type) == TYPE_CODE_UNION
2944 || TYPE_CODE (type) == TYPE_CODE_ARRAY))
2947 /* HFAs are structures (or arrays) consisting entirely of floating
2948 point values of the same length. Up to 8 of these are returned
2949 in registers. Don't use the struct convention when this is the
2951 float_elt_type = is_float_or_hfa_type (type);
2952 if (float_elt_type != NULL
2953 && TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type) <= 8)
2956 /* Other structs of length 32 or less are returned in r8-r11.
2957 Don't use the struct convention for those either. */
2958 return TYPE_LENGTH (type) > 32;
2962 ia64_extract_return_value (struct type *type, struct regcache *regcache,
2965 struct type *float_elt_type;
2967 float_elt_type = is_float_or_hfa_type (type);
2968 if (float_elt_type != NULL)
2970 char from[MAX_REGISTER_SIZE];
2972 int regnum = IA64_FR8_REGNUM;
2973 int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
2977 regcache_cooked_read (regcache, regnum, from);
2978 convert_typed_floating (from, builtin_type_ia64_ext,
2979 (char *)valbuf + offset, float_elt_type);
2980 offset += TYPE_LENGTH (float_elt_type);
2988 int regnum = IA64_GR8_REGNUM;
2989 int reglen = TYPE_LENGTH (register_type (get_regcache_arch (regcache),
2991 int n = TYPE_LENGTH (type) / reglen;
2992 int m = TYPE_LENGTH (type) % reglen;
2997 regcache_cooked_read_unsigned (regcache, regnum, &val);
2998 memcpy ((char *)valbuf + offset, &val, reglen);
3005 regcache_cooked_read_unsigned (regcache, regnum, &val);
3006 memcpy ((char *)valbuf + offset, &val, m);
3012 ia64_store_return_value (struct type *type, struct regcache *regcache,
3013 const gdb_byte *valbuf)
3015 struct type *float_elt_type;
3017 float_elt_type = is_float_or_hfa_type (type);
3018 if (float_elt_type != NULL)
3020 char to[MAX_REGISTER_SIZE];
3022 int regnum = IA64_FR8_REGNUM;
3023 int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
3027 convert_typed_floating ((char *)valbuf + offset, float_elt_type,
3028 to, builtin_type_ia64_ext);
3029 regcache_cooked_write (regcache, regnum, to);
3030 offset += TYPE_LENGTH (float_elt_type);
3038 int regnum = IA64_GR8_REGNUM;
3039 int reglen = TYPE_LENGTH (register_type (get_regcache_arch (regcache),
3041 int n = TYPE_LENGTH (type) / reglen;
3042 int m = TYPE_LENGTH (type) % reglen;
3047 memcpy (&val, (char *)valbuf + offset, reglen);
3048 regcache_cooked_write_unsigned (regcache, regnum, val);
3055 memcpy (&val, (char *)valbuf + offset, m);
3056 regcache_cooked_write_unsigned (regcache, regnum, val);
3061 static enum return_value_convention
3062 ia64_return_value (struct gdbarch *gdbarch, struct type *valtype,
3063 struct regcache *regcache, gdb_byte *readbuf,
3064 const gdb_byte *writebuf)
3066 int struct_return = ia64_use_struct_convention (valtype);
3068 if (writebuf != NULL)
3070 gdb_assert (!struct_return);
3071 ia64_store_return_value (valtype, regcache, writebuf);
3074 if (readbuf != NULL)
3076 gdb_assert (!struct_return);
3077 ia64_extract_return_value (valtype, regcache, readbuf);
3081 return RETURN_VALUE_STRUCT_CONVENTION;
3083 return RETURN_VALUE_REGISTER_CONVENTION;
3087 is_float_or_hfa_type_recurse (struct type *t, struct type **etp)
3089 switch (TYPE_CODE (t))
3093 return TYPE_LENGTH (*etp) == TYPE_LENGTH (t);
3100 case TYPE_CODE_ARRAY:
3102 is_float_or_hfa_type_recurse (check_typedef (TYPE_TARGET_TYPE (t)),
3105 case TYPE_CODE_STRUCT:
3109 for (i = 0; i < TYPE_NFIELDS (t); i++)
3110 if (!is_float_or_hfa_type_recurse
3111 (check_typedef (TYPE_FIELD_TYPE (t, i)), etp))
3122 /* Determine if the given type is one of the floating point types or
3123 and HFA (which is a struct, array, or combination thereof whose
3124 bottom-most elements are all of the same floating point type). */
3126 static struct type *
3127 is_float_or_hfa_type (struct type *t)
3129 struct type *et = 0;
3131 return is_float_or_hfa_type_recurse (t, &et) ? et : 0;
3135 /* Return 1 if the alignment of T is such that the next even slot
3136 should be used. Return 0, if the next available slot should
3137 be used. (See section 8.5.1 of the IA-64 Software Conventions
3138 and Runtime manual). */
3141 slot_alignment_is_next_even (struct type *t)
3143 switch (TYPE_CODE (t))
3147 if (TYPE_LENGTH (t) > 8)
3151 case TYPE_CODE_ARRAY:
3153 slot_alignment_is_next_even (check_typedef (TYPE_TARGET_TYPE (t)));
3154 case TYPE_CODE_STRUCT:
3158 for (i = 0; i < TYPE_NFIELDS (t); i++)
3159 if (slot_alignment_is_next_even
3160 (check_typedef (TYPE_FIELD_TYPE (t, i))))
3169 /* Attempt to find (and return) the global pointer for the given
3172 This is a rather nasty bit of code searchs for the .dynamic section
3173 in the objfile corresponding to the pc of the function we're trying
3174 to call. Once it finds the addresses at which the .dynamic section
3175 lives in the child process, it scans the Elf64_Dyn entries for a
3176 DT_PLTGOT tag. If it finds one of these, the corresponding
3177 d_un.d_ptr value is the global pointer. */
3180 ia64_find_global_pointer (CORE_ADDR faddr)
3182 struct obj_section *faddr_sect;
3184 faddr_sect = find_pc_section (faddr);
3185 if (faddr_sect != NULL)
3187 struct obj_section *osect;
3189 ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
3191 if (strcmp (osect->the_bfd_section->name, ".dynamic") == 0)
3195 if (osect < faddr_sect->objfile->sections_end)
3200 while (addr < osect->endaddr)
3206 status = target_read_memory (addr, buf, sizeof (buf));
3209 tag = extract_signed_integer (buf, sizeof (buf));
3211 if (tag == DT_PLTGOT)
3213 CORE_ADDR global_pointer;
3215 status = target_read_memory (addr + 8, buf, sizeof (buf));
3218 global_pointer = extract_unsigned_integer (buf, sizeof (buf));
3221 return global_pointer;
3234 /* Given a function's address, attempt to find (and return) the
3235 corresponding (canonical) function descriptor. Return 0 if
3238 find_extant_func_descr (CORE_ADDR faddr)
3240 struct obj_section *faddr_sect;
3242 /* Return early if faddr is already a function descriptor. */
3243 faddr_sect = find_pc_section (faddr);
3244 if (faddr_sect && strcmp (faddr_sect->the_bfd_section->name, ".opd") == 0)
3247 if (faddr_sect != NULL)
3249 struct obj_section *osect;
3250 ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
3252 if (strcmp (osect->the_bfd_section->name, ".opd") == 0)
3256 if (osect < faddr_sect->objfile->sections_end)
3261 while (addr < osect->endaddr)
3267 status = target_read_memory (addr, buf, sizeof (buf));
3270 faddr2 = extract_signed_integer (buf, sizeof (buf));
3272 if (faddr == faddr2)
3282 /* Attempt to find a function descriptor corresponding to the
3283 given address. If none is found, construct one on the
3284 stack using the address at fdaptr. */
3287 find_func_descr (struct regcache *regcache, CORE_ADDR faddr, CORE_ADDR *fdaptr)
3291 fdesc = find_extant_func_descr (faddr);
3295 ULONGEST global_pointer;
3301 global_pointer = ia64_find_global_pointer (faddr);
3303 if (global_pointer == 0)
3304 regcache_cooked_read_unsigned (regcache,
3305 IA64_GR1_REGNUM, &global_pointer);
3307 store_unsigned_integer (buf, 8, faddr);
3308 store_unsigned_integer (buf + 8, 8, global_pointer);
3310 write_memory (fdesc, buf, 16);
3316 /* Use the following routine when printing out function pointers
3317 so the user can see the function address rather than just the
3318 function descriptor. */
3320 ia64_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr,
3321 struct target_ops *targ)
3323 struct obj_section *s;
3325 s = find_pc_section (addr);
3327 /* check if ADDR points to a function descriptor. */
3328 if (s && strcmp (s->the_bfd_section->name, ".opd") == 0)
3329 return read_memory_unsigned_integer (addr, 8);
3331 /* There are also descriptors embedded in vtables. */
3334 struct minimal_symbol *minsym;
3336 minsym = lookup_minimal_symbol_by_pc (addr);
3338 if (minsym && is_vtable_name (SYMBOL_LINKAGE_NAME (minsym)))
3339 return read_memory_unsigned_integer (addr, 8);
3346 ia64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
3352 ia64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
3353 struct regcache *regcache, CORE_ADDR bp_addr,
3354 int nargs, struct value **args, CORE_ADDR sp,
3355 int struct_return, CORE_ADDR struct_addr)
3361 int nslots, rseslots, memslots, slotnum, nfuncargs;
3363 ULONGEST bsp, cfm, pfs, new_bsp;
3364 CORE_ADDR funcdescaddr, pc, global_pointer;
3365 CORE_ADDR func_addr = find_function_addr (function, NULL);
3369 /* Count the number of slots needed for the arguments. */
3370 for (argno = 0; argno < nargs; argno++)
3373 type = check_typedef (value_type (arg));
3374 len = TYPE_LENGTH (type);
3376 if ((nslots & 1) && slot_alignment_is_next_even (type))
3379 if (TYPE_CODE (type) == TYPE_CODE_FUNC)
3382 nslots += (len + 7) / 8;
3385 /* Divvy up the slots between the RSE and the memory stack. */
3386 rseslots = (nslots > 8) ? 8 : nslots;
3387 memslots = nslots - rseslots;
3389 /* Allocate a new RSE frame. */
3390 regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
3392 regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
3393 new_bsp = rse_address_add (bsp, rseslots);
3394 regcache_cooked_write_unsigned (regcache, IA64_BSP_REGNUM, new_bsp);
3396 regcache_cooked_read_unsigned (regcache, IA64_PFS_REGNUM, &pfs);
3397 pfs &= 0xc000000000000000LL;
3398 pfs |= (cfm & 0xffffffffffffLL);
3399 regcache_cooked_write_unsigned (regcache, IA64_PFS_REGNUM, pfs);
3401 cfm &= 0xc000000000000000LL;
3403 regcache_cooked_write_unsigned (regcache, IA64_CFM_REGNUM, cfm);
3405 /* We will attempt to find function descriptors in the .opd segment,
3406 but if we can't we'll construct them ourselves. That being the
3407 case, we'll need to reserve space on the stack for them. */
3408 funcdescaddr = sp - nfuncargs * 16;
3409 funcdescaddr &= ~0xfLL;
3411 /* Adjust the stack pointer to it's new value. The calling conventions
3412 require us to have 16 bytes of scratch, plus whatever space is
3413 necessary for the memory slots and our function descriptors. */
3414 sp = sp - 16 - (memslots + nfuncargs) * 8;
3415 sp &= ~0xfLL; /* Maintain 16 byte alignment. */
3417 /* Place the arguments where they belong. The arguments will be
3418 either placed in the RSE backing store or on the memory stack.
3419 In addition, floating point arguments or HFAs are placed in
3420 floating point registers. */
3422 floatreg = IA64_FR8_REGNUM;
3423 for (argno = 0; argno < nargs; argno++)
3425 struct type *float_elt_type;
3428 type = check_typedef (value_type (arg));
3429 len = TYPE_LENGTH (type);
3431 /* Special handling for function parameters. */
3433 && TYPE_CODE (type) == TYPE_CODE_PTR
3434 && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
3437 ULONGEST faddr = extract_unsigned_integer (value_contents (arg), 8);
3438 store_unsigned_integer (val_buf, 8,
3439 find_func_descr (regcache, faddr,
3441 if (slotnum < rseslots)
3442 write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
3444 write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
3451 /* Skip odd slot if necessary... */
3452 if ((slotnum & 1) && slot_alignment_is_next_even (type))
3460 memset (val_buf, 0, 8);
3461 memcpy (val_buf, value_contents (arg) + argoffset, (len > 8) ? 8 : len);
3463 if (slotnum < rseslots)
3464 write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
3466 write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
3473 /* Handle floating point types (including HFAs). */
3474 float_elt_type = is_float_or_hfa_type (type);
3475 if (float_elt_type != NULL)
3478 len = TYPE_LENGTH (type);
3479 while (len > 0 && floatreg < IA64_FR16_REGNUM)
3481 char to[MAX_REGISTER_SIZE];
3482 convert_typed_floating (value_contents (arg) + argoffset, float_elt_type,
3483 to, builtin_type_ia64_ext);
3484 regcache_cooked_write (regcache, floatreg, (void *)to);
3486 argoffset += TYPE_LENGTH (float_elt_type);
3487 len -= TYPE_LENGTH (float_elt_type);
3492 /* Store the struct return value in r8 if necessary. */
3495 regcache_cooked_write_unsigned (regcache, IA64_GR8_REGNUM, (ULONGEST)struct_addr);
3498 global_pointer = ia64_find_global_pointer (func_addr);
3500 if (global_pointer != 0)
3501 regcache_cooked_write_unsigned (regcache, IA64_GR1_REGNUM, global_pointer);
3503 regcache_cooked_write_unsigned (regcache, IA64_BR0_REGNUM, bp_addr);
3505 regcache_cooked_write_unsigned (regcache, sp_regnum, sp);
3510 static struct frame_id
3511 ia64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
3516 frame_unwind_register (next_frame, sp_regnum, buf);
3517 sp = extract_unsigned_integer (buf, 8);
3519 frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
3520 bsp = extract_unsigned_integer (buf, 8);
3522 if (gdbarch_debug >= 1)
3523 fprintf_unfiltered (gdb_stdlog,
3524 "dummy frame id: code 0x%s, stack 0x%s, special 0x%s\n",
3525 paddr_nz (frame_pc_unwind (next_frame)),
3526 paddr_nz (sp), paddr_nz (bsp));
3528 return frame_id_build_special (sp, frame_pc_unwind (next_frame), bsp);
3532 ia64_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
3535 CORE_ADDR ip, psr, pc;
3537 frame_unwind_register (next_frame, IA64_IP_REGNUM, buf);
3538 ip = extract_unsigned_integer (buf, 8);
3539 frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
3540 psr = extract_unsigned_integer (buf, 8);
3542 pc = (ip & ~0xf) | ((psr >> 41) & 3);
3547 ia64_print_insn (bfd_vma memaddr, struct disassemble_info *info)
3549 info->bytes_per_line = SLOT_MULTIPLIER;
3550 return print_insn_ia64 (memaddr, info);
3553 static struct gdbarch *
3554 ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
3556 struct gdbarch *gdbarch;
3557 struct gdbarch_tdep *tdep;
3559 /* If there is already a candidate, use it. */
3560 arches = gdbarch_list_lookup_by_info (arches, &info);
3562 return arches->gdbarch;
3564 tdep = xmalloc (sizeof (struct gdbarch_tdep));
3565 gdbarch = gdbarch_alloc (&info, tdep);
3567 tdep->sigcontext_register_address = 0;
3568 tdep->pc_in_sigtramp = 0;
3570 /* According to the ia64 specs, instructions that store long double
3571 floats in memory use a long-double format different than that
3572 used in the floating registers. The memory format matches the
3573 x86 extended float format which is 80 bits. An OS may choose to
3574 use this format (e.g. GNU/Linux) or choose to use a different
3575 format for storing long doubles (e.g. HPUX). In the latter case,
3576 the setting of the format may be moved/overridden in an
3577 OS-specific tdep file. */
3578 set_gdbarch_long_double_format (gdbarch, floatformats_i387_ext);
3580 set_gdbarch_short_bit (gdbarch, 16);
3581 set_gdbarch_int_bit (gdbarch, 32);
3582 set_gdbarch_long_bit (gdbarch, 64);
3583 set_gdbarch_long_long_bit (gdbarch, 64);
3584 set_gdbarch_float_bit (gdbarch, 32);
3585 set_gdbarch_double_bit (gdbarch, 64);
3586 set_gdbarch_long_double_bit (gdbarch, 128);
3587 set_gdbarch_ptr_bit (gdbarch, 64);
3589 set_gdbarch_num_regs (gdbarch, NUM_IA64_RAW_REGS);
3590 set_gdbarch_num_pseudo_regs (gdbarch, LAST_PSEUDO_REGNUM - FIRST_PSEUDO_REGNUM);
3591 set_gdbarch_sp_regnum (gdbarch, sp_regnum);
3592 set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
3594 set_gdbarch_register_name (gdbarch, ia64_register_name);
3595 set_gdbarch_register_type (gdbarch, ia64_register_type);
3597 set_gdbarch_pseudo_register_read (gdbarch, ia64_pseudo_register_read);
3598 set_gdbarch_pseudo_register_write (gdbarch, ia64_pseudo_register_write);
3599 set_gdbarch_dwarf2_reg_to_regnum (gdbarch, ia64_dwarf_reg_to_regnum);
3600 set_gdbarch_register_reggroup_p (gdbarch, ia64_register_reggroup_p);
3601 set_gdbarch_convert_register_p (gdbarch, ia64_convert_register_p);
3602 set_gdbarch_register_to_value (gdbarch, ia64_register_to_value);
3603 set_gdbarch_value_to_register (gdbarch, ia64_value_to_register);
3605 set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue);
3607 set_gdbarch_return_value (gdbarch, ia64_return_value);
3609 set_gdbarch_memory_insert_breakpoint (gdbarch, ia64_memory_insert_breakpoint);
3610 set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
3611 set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc);
3612 set_gdbarch_read_pc (gdbarch, ia64_read_pc);
3613 set_gdbarch_write_pc (gdbarch, ia64_write_pc);
3615 /* Settings for calling functions in the inferior. */
3616 set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call);
3617 set_gdbarch_frame_align (gdbarch, ia64_frame_align);
3618 set_gdbarch_unwind_dummy_id (gdbarch, ia64_unwind_dummy_id);
3620 set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc);
3621 #ifdef HAVE_LIBUNWIND_IA64_H
3622 frame_unwind_append_sniffer (gdbarch, ia64_libunwind_sigtramp_frame_sniffer);
3623 frame_unwind_append_sniffer (gdbarch, ia64_libunwind_frame_sniffer);
3624 libunwind_frame_set_descr (gdbarch, &ia64_libunwind_descr);
3626 frame_unwind_append_sniffer (gdbarch, ia64_sigtramp_frame_sniffer);
3628 frame_unwind_append_sniffer (gdbarch, ia64_frame_sniffer);
3629 frame_base_set_default (gdbarch, &ia64_frame_base);
3631 /* Settings that should be unnecessary. */
3632 set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
3634 set_gdbarch_print_insn (gdbarch, ia64_print_insn);
3635 set_gdbarch_convert_from_func_ptr_addr (gdbarch, ia64_convert_from_func_ptr_addr);
3637 /* The virtual table contains 16-byte descriptors, not pointers to
3639 set_gdbarch_vtable_function_descriptors (gdbarch, 1);
3641 /* Hook in ABI-specific overrides, if they have been registered. */
3642 gdbarch_init_osabi (info, gdbarch);
3647 extern initialize_file_ftype _initialize_ia64_tdep; /* -Wmissing-prototypes */
3650 _initialize_ia64_tdep (void)
3652 /* Define the ia64 floating-point format to gdb. */
3653 builtin_type_ia64_ext =
3654 init_type (TYPE_CODE_FLT, 128 / 8,
3655 0, "builtin_type_ia64_ext", NULL);
3656 TYPE_FLOATFORMAT (builtin_type_ia64_ext) = floatformats_ia64_ext;
3658 gdbarch_register (bfd_arch_ia64, ia64_gdbarch_init, NULL);