1 /* Target-dependent code for the IA-64 for GDB, the GNU debugger.
3 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "symfile.h" /* for entry_point_address */
26 #include "arch-utils.h"
27 #include "floatformat.h"
33 #include "elf/common.h" /* for DT_PLTGOT value */
36 /* Hook for determining the global pointer when calling functions in
37 the inferior under AIX. The initialization code in ia64-aix-nat.c
38 sets this hook to the address of a function which will find the
39 global pointer for a given address.
41 The generic code which uses the dynamic section in the inferior for
42 finding the global pointer is not of much use on AIX since the
43 values obtained from the inferior have not been relocated. */
45 CORE_ADDR (*native_find_global_pointer) (CORE_ADDR) = 0;
47 /* An enumeration of the different IA-64 instruction types. */
49 typedef enum instruction_type
51 A, /* Integer ALU ; I-unit or M-unit */
52 I, /* Non-ALU integer; I-unit */
53 M, /* Memory ; M-unit */
54 F, /* Floating-point ; F-unit */
55 B, /* Branch ; B-unit */
56 L, /* Extended (L+X) ; I-unit */
57 X, /* Extended (L+X) ; I-unit */
58 undefined /* undefined or reserved */
61 /* We represent IA-64 PC addresses as the value of the instruction
62 pointer or'd with some bit combination in the low nibble which
63 represents the slot number in the bundle addressed by the
64 instruction pointer. The problem is that the Linux kernel
65 multiplies its slot numbers (for exceptions) by one while the
66 disassembler multiplies its slot numbers by 6. In addition, I've
67 heard it said that the simulator uses 1 as the multiplier.
69 I've fixed the disassembler so that the bytes_per_line field will
70 be the slot multiplier. If bytes_per_line comes in as zero, it
71 is set to six (which is how it was set up initially). -- objdump
72 displays pretty disassembly dumps with this value. For our purposes,
73 we'll set bytes_per_line to SLOT_MULTIPLIER. This is okay since we
74 never want to also display the raw bytes the way objdump does. */
76 #define SLOT_MULTIPLIER 1
78 /* Length in bytes of an instruction bundle */
82 /* FIXME: These extern declarations should go in ia64-tdep.h. */
83 extern CORE_ADDR ia64_linux_sigcontext_register_address (CORE_ADDR, int);
84 extern CORE_ADDR ia64_aix_sigcontext_register_address (CORE_ADDR, int);
86 static gdbarch_init_ftype ia64_gdbarch_init;
88 static gdbarch_register_name_ftype ia64_register_name;
89 static gdbarch_register_raw_size_ftype ia64_register_raw_size;
90 static gdbarch_register_virtual_size_ftype ia64_register_virtual_size;
91 static gdbarch_register_virtual_type_ftype ia64_register_virtual_type;
92 static gdbarch_register_byte_ftype ia64_register_byte;
93 static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc;
94 static gdbarch_frame_chain_ftype ia64_frame_chain;
95 static gdbarch_frame_saved_pc_ftype ia64_frame_saved_pc;
96 static gdbarch_skip_prologue_ftype ia64_skip_prologue;
97 static gdbarch_frame_init_saved_regs_ftype ia64_frame_init_saved_regs;
98 static gdbarch_get_saved_register_ftype ia64_get_saved_register;
99 static gdbarch_deprecated_extract_return_value_ftype ia64_extract_return_value;
100 static gdbarch_deprecated_extract_struct_value_address_ftype ia64_extract_struct_value_address;
101 static gdbarch_use_struct_convention_ftype ia64_use_struct_convention;
102 static gdbarch_frameless_function_invocation_ftype ia64_frameless_function_invocation;
103 static gdbarch_init_extra_frame_info_ftype ia64_init_extra_frame_info;
104 static gdbarch_store_struct_return_ftype ia64_store_struct_return;
105 static gdbarch_push_arguments_ftype ia64_push_arguments;
106 static gdbarch_push_return_address_ftype ia64_push_return_address;
107 static gdbarch_pop_frame_ftype ia64_pop_frame;
108 static gdbarch_saved_pc_after_call_ftype ia64_saved_pc_after_call;
109 static void ia64_pop_frame_regular (struct frame_info *frame);
110 static struct type *is_float_or_hfa_type (struct type *t);
112 static int ia64_num_regs = 590;
114 static int pc_regnum = IA64_IP_REGNUM;
115 static int sp_regnum = IA64_GR12_REGNUM;
116 static int fp_regnum = IA64_VFP_REGNUM;
117 static int lr_regnum = IA64_VRAP_REGNUM;
119 static LONGEST ia64_call_dummy_words[] = {0};
121 /* Array of register names; There should be ia64_num_regs strings in
124 static char *ia64_register_names[] =
125 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
126 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
127 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
128 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
129 "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
130 "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
131 "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
132 "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
133 "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
134 "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
135 "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
136 "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
137 "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
138 "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
139 "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
140 "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
142 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
143 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
144 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
145 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
146 "f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39",
147 "f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47",
148 "f48", "f49", "f50", "f51", "f52", "f53", "f54", "f55",
149 "f56", "f57", "f58", "f59", "f60", "f61", "f62", "f63",
150 "f64", "f65", "f66", "f67", "f68", "f69", "f70", "f71",
151 "f72", "f73", "f74", "f75", "f76", "f77", "f78", "f79",
152 "f80", "f81", "f82", "f83", "f84", "f85", "f86", "f87",
153 "f88", "f89", "f90", "f91", "f92", "f93", "f94", "f95",
154 "f96", "f97", "f98", "f99", "f100", "f101", "f102", "f103",
155 "f104", "f105", "f106", "f107", "f108", "f109", "f110", "f111",
156 "f112", "f113", "f114", "f115", "f116", "f117", "f118", "f119",
157 "f120", "f121", "f122", "f123", "f124", "f125", "f126", "f127",
159 "p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7",
160 "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",
161 "p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23",
162 "p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31",
163 "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39",
164 "p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47",
165 "p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55",
166 "p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63",
168 "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7",
172 "pr", "ip", "psr", "cfm",
174 "kr0", "kr1", "kr2", "kr3", "kr4", "kr5", "kr6", "kr7",
175 "", "", "", "", "", "", "", "",
176 "rsc", "bsp", "bspstore", "rnat",
178 "eflag", "csd", "ssd", "cflg", "fsr", "fir", "fdr", "",
179 "ccv", "", "", "", "unat", "", "", "",
180 "fpsr", "", "", "", "itc",
181 "", "", "", "", "", "", "", "", "", "",
182 "", "", "", "", "", "", "", "", "",
184 "", "", "", "", "", "", "", "", "", "",
185 "", "", "", "", "", "", "", "", "", "",
186 "", "", "", "", "", "", "", "", "", "",
187 "", "", "", "", "", "", "", "", "", "",
188 "", "", "", "", "", "", "", "", "", "",
189 "", "", "", "", "", "", "", "", "", "",
191 "nat0", "nat1", "nat2", "nat3", "nat4", "nat5", "nat6", "nat7",
192 "nat8", "nat9", "nat10", "nat11", "nat12", "nat13", "nat14", "nat15",
193 "nat16", "nat17", "nat18", "nat19", "nat20", "nat21", "nat22", "nat23",
194 "nat24", "nat25", "nat26", "nat27", "nat28", "nat29", "nat30", "nat31",
195 "nat32", "nat33", "nat34", "nat35", "nat36", "nat37", "nat38", "nat39",
196 "nat40", "nat41", "nat42", "nat43", "nat44", "nat45", "nat46", "nat47",
197 "nat48", "nat49", "nat50", "nat51", "nat52", "nat53", "nat54", "nat55",
198 "nat56", "nat57", "nat58", "nat59", "nat60", "nat61", "nat62", "nat63",
199 "nat64", "nat65", "nat66", "nat67", "nat68", "nat69", "nat70", "nat71",
200 "nat72", "nat73", "nat74", "nat75", "nat76", "nat77", "nat78", "nat79",
201 "nat80", "nat81", "nat82", "nat83", "nat84", "nat85", "nat86", "nat87",
202 "nat88", "nat89", "nat90", "nat91", "nat92", "nat93", "nat94", "nat95",
203 "nat96", "nat97", "nat98", "nat99", "nat100","nat101","nat102","nat103",
204 "nat104","nat105","nat106","nat107","nat108","nat109","nat110","nat111",
205 "nat112","nat113","nat114","nat115","nat116","nat117","nat118","nat119",
206 "nat120","nat121","nat122","nat123","nat124","nat125","nat126","nat127",
209 struct frame_extra_info
211 CORE_ADDR bsp; /* points at r32 for the current frame */
212 CORE_ADDR cfm; /* cfm value for current frame */
213 int sof; /* Size of frame (decoded from cfm value) */
214 int sol; /* Size of locals (decoded from cfm value) */
215 CORE_ADDR after_prologue;
216 /* Address of first instruction after the last
217 prologue instruction; Note that there may
218 be instructions from the function's body
219 intermingled with the prologue. */
220 int mem_stack_frame_size;
221 /* Size of the memory stack frame (may be zero),
222 or -1 if it has not been determined yet. */
223 int fp_reg; /* Register number (if any) used a frame pointer
224 for this frame. 0 if no register is being used
225 as the frame pointer. */
230 int os_ident; /* From the ELF header, one of the ELFOSABI_
231 constants: ELFOSABI_LINUX, ELFOSABI_AIX,
233 CORE_ADDR (*sigcontext_register_address) (CORE_ADDR, int);
234 /* OS specific function which, given a frame address
235 and register number, returns the offset to the
236 given register from the start of the frame. */
237 CORE_ADDR (*find_global_pointer) (CORE_ADDR);
240 #define SIGCONTEXT_REGISTER_ADDRESS \
241 (gdbarch_tdep (current_gdbarch)->sigcontext_register_address)
242 #define FIND_GLOBAL_POINTER \
243 (gdbarch_tdep (current_gdbarch)->find_global_pointer)
246 ia64_register_name (int reg)
248 return ia64_register_names[reg];
252 ia64_register_raw_size (int reg)
254 return (IA64_FR0_REGNUM <= reg && reg <= IA64_FR127_REGNUM) ? 16 : 8;
258 ia64_register_virtual_size (int reg)
260 return (IA64_FR0_REGNUM <= reg && reg <= IA64_FR127_REGNUM) ? 16 : 8;
263 /* Return true iff register N's virtual format is different from
266 ia64_register_convertible (int nr)
268 return (IA64_FR0_REGNUM <= nr && nr <= IA64_FR127_REGNUM);
271 const struct floatformat floatformat_ia64_ext =
273 floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
274 floatformat_intbit_yes
278 ia64_register_convert_to_virtual (int regnum, struct type *type,
279 char *from, char *to)
281 if (regnum >= IA64_FR0_REGNUM && regnum <= IA64_FR127_REGNUM)
284 floatformat_to_doublest (&floatformat_ia64_ext, from, &val);
285 store_floating(to, TYPE_LENGTH(type), val);
288 error("ia64_register_convert_to_virtual called with non floating point register number");
292 ia64_register_convert_to_raw (struct type *type, int regnum,
293 char *from, char *to)
295 if (regnum >= IA64_FR0_REGNUM && regnum <= IA64_FR127_REGNUM)
297 DOUBLEST val = extract_floating (from, TYPE_LENGTH(type));
298 floatformat_from_doublest (&floatformat_ia64_ext, &val, to);
301 error("ia64_register_convert_to_raw called with non floating point register number");
305 ia64_register_virtual_type (int reg)
307 if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
308 return builtin_type_long_double;
310 return builtin_type_long;
314 ia64_register_byte (int reg)
317 (reg <= IA64_FR0_REGNUM ? 0 : 8 * ((reg > IA64_FR127_REGNUM) ? 128 : reg - IA64_FR0_REGNUM));
320 /* Read the given register from a sigcontext structure in the
324 read_sigcontext_register (struct frame_info *frame, int regnum)
329 internal_error (__FILE__, __LINE__,
330 "read_sigcontext_register: NULL frame");
331 if (!frame->signal_handler_caller)
332 internal_error (__FILE__, __LINE__,
333 "read_sigcontext_register: frame not a signal_handler_caller");
334 if (SIGCONTEXT_REGISTER_ADDRESS == 0)
335 internal_error (__FILE__, __LINE__,
336 "read_sigcontext_register: SIGCONTEXT_REGISTER_ADDRESS is 0");
338 regaddr = SIGCONTEXT_REGISTER_ADDRESS (frame->frame, regnum);
340 return read_memory_integer (regaddr, REGISTER_RAW_SIZE (regnum));
342 internal_error (__FILE__, __LINE__,
343 "read_sigcontext_register: Register %d not in struct sigcontext", regnum);
346 /* Extract ``len'' bits from an instruction bundle starting at
350 extract_bit_field (char *bundle, int from, int len)
352 long long result = 0LL;
354 int from_byte = from / 8;
355 int to_byte = to / 8;
356 unsigned char *b = (unsigned char *) bundle;
362 if (from_byte == to_byte)
363 c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
364 result = c >> (from % 8);
365 lshift = 8 - (from % 8);
367 for (i = from_byte+1; i < to_byte; i++)
369 result |= ((long long) b[i]) << lshift;
373 if (from_byte < to_byte && (to % 8 != 0))
376 c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
377 result |= ((long long) c) << lshift;
383 /* Replace the specified bits in an instruction bundle */
386 replace_bit_field (char *bundle, long long val, int from, int len)
389 int from_byte = from / 8;
390 int to_byte = to / 8;
391 unsigned char *b = (unsigned char *) bundle;
394 if (from_byte == to_byte)
396 unsigned char left, right;
398 left = (c >> (to % 8)) << (to % 8);
399 right = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
400 c = (unsigned char) (val & 0xff);
401 c = (unsigned char) (c << (from % 8 + 8 - to % 8)) >> (8 - to % 8);
409 c = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
410 c = c | (val << (from % 8));
412 val >>= 8 - from % 8;
414 for (i = from_byte+1; i < to_byte; i++)
423 unsigned char cv = (unsigned char) val;
425 c = c >> (to % 8) << (to % 8);
426 c |= ((unsigned char) (cv << (8 - to % 8))) >> (8 - to % 8);
432 /* Return the contents of slot N (for N = 0, 1, or 2) in
433 and instruction bundle */
436 slotN_contents (char *bundle, int slotnum)
438 return extract_bit_field (bundle, 5+41*slotnum, 41);
441 /* Store an instruction in an instruction bundle */
444 replace_slotN_contents (char *bundle, long long instr, int slotnum)
446 replace_bit_field (bundle, instr, 5+41*slotnum, 41);
449 static enum instruction_type template_encoding_table[32][3] =
451 { M, I, I }, /* 00 */
452 { M, I, I }, /* 01 */
453 { M, I, I }, /* 02 */
454 { M, I, I }, /* 03 */
455 { M, L, X }, /* 04 */
456 { M, L, X }, /* 05 */
457 { undefined, undefined, undefined }, /* 06 */
458 { undefined, undefined, undefined }, /* 07 */
459 { M, M, I }, /* 08 */
460 { M, M, I }, /* 09 */
461 { M, M, I }, /* 0A */
462 { M, M, I }, /* 0B */
463 { M, F, I }, /* 0C */
464 { M, F, I }, /* 0D */
465 { M, M, F }, /* 0E */
466 { M, M, F }, /* 0F */
467 { M, I, B }, /* 10 */
468 { M, I, B }, /* 11 */
469 { M, B, B }, /* 12 */
470 { M, B, B }, /* 13 */
471 { undefined, undefined, undefined }, /* 14 */
472 { undefined, undefined, undefined }, /* 15 */
473 { B, B, B }, /* 16 */
474 { B, B, B }, /* 17 */
475 { M, M, B }, /* 18 */
476 { M, M, B }, /* 19 */
477 { undefined, undefined, undefined }, /* 1A */
478 { undefined, undefined, undefined }, /* 1B */
479 { M, F, B }, /* 1C */
480 { M, F, B }, /* 1D */
481 { undefined, undefined, undefined }, /* 1E */
482 { undefined, undefined, undefined }, /* 1F */
485 /* Fetch and (partially) decode an instruction at ADDR and return the
486 address of the next instruction to fetch. */
489 fetch_instruction (CORE_ADDR addr, instruction_type *it, long long *instr)
491 char bundle[BUNDLE_LEN];
492 int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
496 /* Warn about slot numbers greater than 2. We used to generate
497 an error here on the assumption that the user entered an invalid
498 address. But, sometimes GDB itself requests an invalid address.
499 This can (easily) happen when execution stops in a function for
500 which there are no symbols. The prologue scanner will attempt to
501 find the beginning of the function - if the nearest symbol
502 happens to not be aligned on a bundle boundary (16 bytes), the
503 resulting starting address will cause GDB to think that the slot
506 So we warn about it and set the slot number to zero. It is
507 not necessarily a fatal condition, particularly if debugging
508 at the assembly language level. */
511 warning ("Can't fetch instructions for slot numbers greater than 2.\n"
512 "Using slot 0 instead");
518 val = target_read_memory (addr, bundle, BUNDLE_LEN);
523 *instr = slotN_contents (bundle, slotnum);
524 template = extract_bit_field (bundle, 0, 5);
525 *it = template_encoding_table[(int)template][slotnum];
527 if (slotnum == 2 || (slotnum == 1 && *it == L))
530 addr += (slotnum + 1) * SLOT_MULTIPLIER;
535 /* There are 5 different break instructions (break.i, break.b,
536 break.m, break.f, and break.x), but they all have the same
537 encoding. (The five bit template in the low five bits of the
538 instruction bundle distinguishes one from another.)
540 The runtime architecture manual specifies that break instructions
541 used for debugging purposes must have the upper two bits of the 21
542 bit immediate set to a 0 and a 1 respectively. A breakpoint
543 instruction encodes the most significant bit of its 21 bit
544 immediate at bit 36 of the 41 bit instruction. The penultimate msb
545 is at bit 25 which leads to the pattern below.
547 Originally, I had this set up to do, e.g, a "break.i 0x80000" But
548 it turns out that 0x80000 was used as the syscall break in the early
549 simulators. So I changed the pattern slightly to do "break.i 0x080001"
550 instead. But that didn't work either (I later found out that this
551 pattern was used by the simulator that I was using.) So I ended up
552 using the pattern seen below. */
555 #define BREAKPOINT 0x00002000040LL
557 #define BREAKPOINT 0x00003333300LL
560 ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
562 char bundle[BUNDLE_LEN];
563 int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
569 error("Can't insert breakpoint for slot numbers greater than 2.");
573 val = target_read_memory (addr, bundle, BUNDLE_LEN);
575 /* Check for L type instruction in 2nd slot, if present then
576 bump up the slot number to the 3rd slot */
577 template = extract_bit_field (bundle, 0, 5);
578 if (slotnum == 1 && template_encoding_table[template][1] == L)
583 instr = slotN_contents (bundle, slotnum);
584 memcpy(contents_cache, &instr, sizeof(instr));
585 replace_slotN_contents (bundle, BREAKPOINT, slotnum);
587 target_write_memory (addr, bundle, BUNDLE_LEN);
593 ia64_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
595 char bundle[BUNDLE_LEN];
596 int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER;
603 val = target_read_memory (addr, bundle, BUNDLE_LEN);
605 /* Check for L type instruction in 2nd slot, if present then
606 bump up the slot number to the 3rd slot */
607 template = extract_bit_field (bundle, 0, 5);
608 if (slotnum == 1 && template_encoding_table[template][1] == L)
613 memcpy (&instr, contents_cache, sizeof instr);
614 replace_slotN_contents (bundle, instr, slotnum);
616 target_write_memory (addr, bundle, BUNDLE_LEN);
621 /* We don't really want to use this, but remote.c needs to call it in order
622 to figure out if Z-packets are supported or not. Oh, well. */
623 const unsigned char *
624 ia64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
626 static unsigned char breakpoint[] =
627 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
628 *lenptr = sizeof (breakpoint);
636 ia64_read_pc (ptid_t ptid)
638 CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
639 CORE_ADDR pc_value = read_register_pid (IA64_IP_REGNUM, ptid);
640 int slot_num = (psr_value >> 41) & 3;
642 return pc_value | (slot_num * SLOT_MULTIPLIER);
646 ia64_write_pc (CORE_ADDR new_pc, ptid_t ptid)
648 int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
649 CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
650 psr_value &= ~(3LL << 41);
651 psr_value |= (CORE_ADDR)(slot_num & 0x3) << 41;
655 write_register_pid (IA64_PSR_REGNUM, psr_value, ptid);
656 write_register_pid (IA64_IP_REGNUM, new_pc, ptid);
659 #define IS_NaT_COLLECTION_ADDR(addr) ((((addr) >> 3) & 0x3f) == 0x3f)
661 /* Returns the address of the slot that's NSLOTS slots away from
662 the address ADDR. NSLOTS may be positive or negative. */
664 rse_address_add(CORE_ADDR addr, int nslots)
667 int mandatory_nat_slots = nslots / 63;
668 int direction = nslots < 0 ? -1 : 1;
670 new_addr = addr + 8 * (nslots + mandatory_nat_slots);
672 if ((new_addr >> 9) != ((addr + 8 * 64 * mandatory_nat_slots) >> 9))
673 new_addr += 8 * direction;
675 if (IS_NaT_COLLECTION_ADDR(new_addr))
676 new_addr += 8 * direction;
681 /* The IA-64 frame chain is a bit odd. We won't always have a frame
682 pointer, so we use the SP value as the FP for the purpose of
683 creating a frame. There is sometimes a register (not fixed) which
684 is used as a frame pointer. When this register exists, it is not
685 especially hard to determine which one is being used. It isn't
686 even really hard to compute the frame chain, but it can be
687 computationally expensive. So, instead of making life difficult
688 (and slow), we pick a more convenient representation of the frame
689 chain, knowing that we'll have to make some small adjustments in
690 other places. (E.g, note that read_fp() is actually read_sp() in
691 ia64_gdbarch_init() below.)
693 Okay, so what is the frame chain exactly? It'll be the SP value
694 at the time that the function in question was entered.
696 Note that this *should* actually the frame pointer for the current
697 function! But as I note above, if we were to attempt to find the
698 address of the beginning of the previous frame, we'd waste a lot
699 of cycles for no good reason. So instead, we simply choose to
700 represent the frame chain as the end of the previous frame instead
704 ia64_frame_chain (struct frame_info *frame)
706 if (frame->signal_handler_caller)
707 return read_sigcontext_register (frame, sp_regnum);
708 else if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
712 FRAME_INIT_SAVED_REGS (frame);
713 if (frame->saved_regs[IA64_VFP_REGNUM])
714 return read_memory_integer (frame->saved_regs[IA64_VFP_REGNUM], 8);
716 return frame->frame + frame->extra_info->mem_stack_frame_size;
721 ia64_frame_saved_pc (struct frame_info *frame)
723 if (frame->signal_handler_caller)
724 return read_sigcontext_register (frame, pc_regnum);
725 else if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame))
726 return deprecated_read_register_dummy (frame->pc, frame->frame, pc_regnum);
729 FRAME_INIT_SAVED_REGS (frame);
731 if (frame->saved_regs[IA64_VRAP_REGNUM])
732 return read_memory_integer (frame->saved_regs[IA64_VRAP_REGNUM], 8);
733 else if (frame->next && frame->next->signal_handler_caller)
734 return read_sigcontext_register (frame->next, IA64_BR0_REGNUM);
735 else /* either frameless, or not far enough along in the prologue... */
736 return ia64_saved_pc_after_call (frame);
740 /* Limit the number of skipped non-prologue instructions since examining
741 of the prologue is expensive. */
742 static int max_skip_non_prologue_insns = 10;
744 /* Given PC representing the starting address of a function, and
745 LIM_PC which is the (sloppy) limit to which to scan when looking
746 for a prologue, attempt to further refine this limit by using
747 the line data in the symbol table. If successful, a better guess
748 on where the prologue ends is returned, otherwise the previous
749 value of lim_pc is returned. TRUST_LIMIT is a pointer to a flag
750 which will be set to indicate whether the returned limit may be
751 used with no further scanning in the event that the function is
755 refine_prologue_limit (CORE_ADDR pc, CORE_ADDR lim_pc, int *trust_limit)
757 struct symtab_and_line prologue_sal;
758 CORE_ADDR start_pc = pc;
760 /* Start off not trusting the limit. */
763 prologue_sal = find_pc_line (pc, 0);
764 if (prologue_sal.line != 0)
767 CORE_ADDR addr = prologue_sal.end;
769 /* Handle the case in which compiler's optimizer/scheduler
770 has moved instructions into the prologue. We scan ahead
771 in the function looking for address ranges whose corresponding
772 line number is less than or equal to the first one that we
773 found for the function. (It can be less than when the
774 scheduler puts a body instruction before the first prologue
776 for (i = 2 * max_skip_non_prologue_insns;
777 i > 0 && (lim_pc == 0 || addr < lim_pc);
780 struct symtab_and_line sal;
782 sal = find_pc_line (addr, 0);
785 if (sal.line <= prologue_sal.line
786 && sal.symtab == prologue_sal.symtab)
793 if (lim_pc == 0 || prologue_sal.end < lim_pc)
795 lim_pc = prologue_sal.end;
796 if (start_pc == get_pc_function_start (lim_pc))
803 #define isScratch(_regnum_) ((_regnum_) == 2 || (_regnum_) == 3 \
804 || (8 <= (_regnum_) && (_regnum_) <= 11) \
805 || (14 <= (_regnum_) && (_regnum_) <= 31))
806 #define imm9(_instr_) \
807 ( ((((_instr_) & 0x01000000000LL) ? -1 : 0) << 8) \
808 | (((_instr_) & 0x00008000000LL) >> 20) \
809 | (((_instr_) & 0x00000001fc0LL) >> 6))
812 examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
815 CORE_ADDR last_prologue_pc = pc;
818 int do_fsr_stuff = 0;
823 int unat_save_reg = 0;
825 int mem_stack_frame_size = 0;
827 CORE_ADDR spill_addr = 0;
832 memset (instores, 0, sizeof instores);
833 memset (infpstores, 0, sizeof infpstores);
835 if (frame && !frame->saved_regs)
837 frame_saved_regs_zalloc (frame);
843 && frame->extra_info->after_prologue != 0
844 && frame->extra_info->after_prologue <= lim_pc)
845 return frame->extra_info->after_prologue;
847 lim_pc = refine_prologue_limit (pc, lim_pc, &trust_limit);
849 /* Must start with an alloc instruction */
850 next_pc = fetch_instruction (pc, &it, &instr);
851 if (pc < lim_pc && next_pc
852 && it == M && ((instr & 0x1ee0000003fLL) == 0x02c00000000LL))
855 int sor = (int) ((instr & 0x00078000000LL) >> 27);
856 int sol = (int) ((instr & 0x00007f00000LL) >> 20);
857 int sof = (int) ((instr & 0x000000fe000LL) >> 13);
858 /* Okay, so sor, sol, and sof aren't used right now; but perhaps
859 we could compare against the size given to us via the cfm as
860 either a sanity check or possibly to see if the frame has been
861 changed by a later alloc instruction... */
862 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
864 last_prologue_pc = next_pc;
869 pc = lim_pc; /* Frameless: We're done early. */
871 last_prologue_pc = lim_pc;
874 /* Loop, looking for prologue instructions, keeping track of
875 where preserved registers were spilled. */
878 next_pc = fetch_instruction (pc, &it, &instr);
882 if ((it == B && ((instr & 0x1e1f800003f) != 0x04000000000))
883 || ((instr & 0x3fLL) != 0LL))
885 /* Exit loop upon hitting a non-nop branch instruction
886 or a predicated instruction. */
889 else if (it == I && ((instr & 0x1eff8000000LL) == 0x00188000000LL))
892 int b2 = (int) ((instr & 0x0000000e000LL) >> 13);
893 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
894 int qp = (int) (instr & 0x0000000003f);
896 if (qp == 0 && b2 == 0 && rN >= 32 && ret_reg == 0)
899 last_prologue_pc = next_pc;
902 else if ((it == I || it == M)
903 && ((instr & 0x1ee00000000LL) == 0x10800000000LL))
905 /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
906 int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
907 | ((instr & 0x001f8000000LL) >> 20)
908 | ((instr & 0x000000fe000LL) >> 13));
909 int rM = (int) ((instr & 0x00007f00000LL) >> 20);
910 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
911 int qp = (int) (instr & 0x0000000003fLL);
913 if (qp == 0 && rN >= 32 && imm == 0 && rM == 12 && fp_reg == 0)
917 last_prologue_pc = next_pc;
919 else if (qp == 0 && rN == 12 && rM == 12)
921 /* adds r12, -mem_stack_frame_size, r12 */
922 mem_stack_frame_size -= imm;
923 last_prologue_pc = next_pc;
925 else if (qp == 0 && rN == 2
926 && ((rM == fp_reg && fp_reg != 0) || rM == 12))
928 /* adds r2, spilloffset, rFramePointer
930 adds r2, spilloffset, r12
932 Get ready for stf.spill or st8.spill instructions.
933 The address to start spilling at is loaded into r2.
934 FIXME: Why r2? That's what gcc currently uses; it
935 could well be different for other compilers. */
937 /* Hmm... whether or not this will work will depend on
938 where the pc is. If it's still early in the prologue
939 this'll be wrong. FIXME */
940 spill_addr = (frame ? frame->frame : 0)
941 + (rM == 12 ? 0 : mem_stack_frame_size)
944 last_prologue_pc = next_pc;
948 && ( ((instr & 0x1efc0000000LL) == 0x0eec0000000LL)
949 || ((instr & 0x1ffc8000000LL) == 0x0cec0000000LL) ))
951 /* stf.spill [rN] = fM, imm9
953 stf.spill [rN] = fM */
955 int imm = imm9(instr);
956 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
957 int fM = (int) ((instr & 0x000000fe000LL) >> 13);
958 int qp = (int) (instr & 0x0000000003fLL);
959 if (qp == 0 && rN == spill_reg && spill_addr != 0
960 && ((2 <= fM && fM <= 5) || (16 <= fM && fM <= 31)))
963 frame->saved_regs[IA64_FR0_REGNUM + fM] = spill_addr;
965 if ((instr & 0x1efc0000000) == 0x0eec0000000)
968 spill_addr = 0; /* last one; must be done */
969 last_prologue_pc = next_pc;
972 else if ((it == M && ((instr & 0x1eff8000000LL) == 0x02110000000LL))
973 || (it == I && ((instr & 0x1eff8000000LL) == 0x00050000000LL)) )
979 int arM = (int) ((instr & 0x00007f00000LL) >> 20);
980 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
981 int qp = (int) (instr & 0x0000000003fLL);
982 if (qp == 0 && isScratch (rN) && arM == 36 /* ar.unat */)
984 /* We have something like "mov.m r3 = ar.unat". Remember the
985 r3 (or whatever) and watch for a store of this register... */
987 last_prologue_pc = next_pc;
990 else if (it == I && ((instr & 0x1eff8000000LL) == 0x00198000000LL))
993 int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
994 int qp = (int) (instr & 0x0000000003fLL);
995 if (qp == 0 && isScratch (rN))
998 last_prologue_pc = next_pc;
1002 && ( ((instr & 0x1ffc8000000LL) == 0x08cc0000000LL)
1003 || ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)))
1007 st8 [rN] = rM, imm9 */
1008 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
1009 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1010 int qp = (int) (instr & 0x0000000003fLL);
1011 if (qp == 0 && rN == spill_reg && spill_addr != 0
1012 && (rM == unat_save_reg || rM == pr_save_reg))
1014 /* We've found a spill of either the UNAT register or the PR
1015 register. (Well, not exactly; what we've actually found is
1016 a spill of the register that UNAT or PR was moved to).
1017 Record that fact and move on... */
1018 if (rM == unat_save_reg)
1020 /* Track UNAT register */
1022 frame->saved_regs[IA64_UNAT_REGNUM] = spill_addr;
1027 /* Track PR register */
1029 frame->saved_regs[IA64_PR_REGNUM] = spill_addr;
1032 if ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)
1033 /* st8 [rN] = rM, imm9 */
1034 spill_addr += imm9(instr);
1036 spill_addr = 0; /* must be done spilling */
1037 last_prologue_pc = next_pc;
1039 else if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
1041 /* Allow up to one store of each input register. */
1042 instores[rM-32] = 1;
1043 last_prologue_pc = next_pc;
1046 else if (it == M && ((instr & 0x1ff08000000LL) == 0x08c00000000LL))
1053 Note that the st8 case is handled in the clause above.
1055 Advance over stores of input registers. One store per input
1056 register is permitted. */
1057 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1058 int qp = (int) (instr & 0x0000000003fLL);
1059 if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
1061 instores[rM-32] = 1;
1062 last_prologue_pc = next_pc;
1065 else if (it == M && ((instr & 0x1ff88000000LL) == 0x0cc80000000LL))
1072 Advance over stores of floating point input registers. Again
1073 one store per register is permitted */
1074 int fM = (int) ((instr & 0x000000fe000LL) >> 13);
1075 int qp = (int) (instr & 0x0000000003fLL);
1076 if (qp == 0 && 8 <= fM && fM < 16 && !infpstores[fM - 8])
1078 infpstores[fM-8] = 1;
1079 last_prologue_pc = next_pc;
1083 && ( ((instr & 0x1ffc8000000LL) == 0x08ec0000000LL)
1084 || ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)))
1086 /* st8.spill [rN] = rM
1088 st8.spill [rN] = rM, imm9 */
1089 int rN = (int) ((instr & 0x00007f00000LL) >> 20);
1090 int rM = (int) ((instr & 0x000000fe000LL) >> 13);
1091 int qp = (int) (instr & 0x0000000003fLL);
1092 if (qp == 0 && rN == spill_reg && 4 <= rM && rM <= 7)
1094 /* We've found a spill of one of the preserved general purpose
1095 regs. Record the spill address and advance the spill
1096 register if appropriate. */
1098 frame->saved_regs[IA64_GR0_REGNUM + rM] = spill_addr;
1099 if ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)
1100 /* st8.spill [rN] = rM, imm9 */
1101 spill_addr += imm9(instr);
1103 spill_addr = 0; /* Done spilling */
1104 last_prologue_pc = next_pc;
1116 /* Extract the size of the rotating portion of the stack
1117 frame and the register rename base from the current
1119 sor = ((frame->extra_info->cfm >> 14) & 0xf) * 8;
1120 rrb_gr = (frame->extra_info->cfm >> 18) & 0x7f;
1122 for (i = 0, addr = frame->extra_info->bsp;
1123 i < frame->extra_info->sof;
1126 if (IS_NaT_COLLECTION_ADDR (addr))
1131 frame->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
1134 frame->saved_regs[IA64_GR32_REGNUM + i] = addr;
1136 if (i+32 == cfm_reg)
1137 frame->saved_regs[IA64_CFM_REGNUM] = addr;
1138 if (i+32 == ret_reg)
1139 frame->saved_regs[IA64_VRAP_REGNUM] = addr;
1141 frame->saved_regs[IA64_VFP_REGNUM] = addr;
1145 if (frame && frame->extra_info) {
1146 frame->extra_info->after_prologue = last_prologue_pc;
1147 frame->extra_info->mem_stack_frame_size = mem_stack_frame_size;
1148 frame->extra_info->fp_reg = fp_reg;
1151 return last_prologue_pc;
1155 ia64_skip_prologue (CORE_ADDR pc)
1157 return examine_prologue (pc, pc+1024, 0);
1161 ia64_frame_init_saved_regs (struct frame_info *frame)
1163 if (frame->saved_regs)
1166 if (frame->signal_handler_caller && SIGCONTEXT_REGISTER_ADDRESS)
1170 frame_saved_regs_zalloc (frame);
1172 frame->saved_regs[IA64_VRAP_REGNUM] =
1173 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_IP_REGNUM);
1174 frame->saved_regs[IA64_CFM_REGNUM] =
1175 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_CFM_REGNUM);
1176 frame->saved_regs[IA64_PSR_REGNUM] =
1177 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_PSR_REGNUM);
1179 frame->saved_regs[IA64_BSP_REGNUM] =
1180 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_BSP_REGNUM);
1182 frame->saved_regs[IA64_RNAT_REGNUM] =
1183 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_RNAT_REGNUM);
1184 frame->saved_regs[IA64_CCV_REGNUM] =
1185 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_CCV_REGNUM);
1186 frame->saved_regs[IA64_UNAT_REGNUM] =
1187 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_UNAT_REGNUM);
1188 frame->saved_regs[IA64_FPSR_REGNUM] =
1189 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_FPSR_REGNUM);
1190 frame->saved_regs[IA64_PFS_REGNUM] =
1191 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_PFS_REGNUM);
1192 frame->saved_regs[IA64_LC_REGNUM] =
1193 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_LC_REGNUM);
1194 for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
1195 if (regno != sp_regnum)
1196 frame->saved_regs[regno] =
1197 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, regno);
1198 for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
1199 frame->saved_regs[regno] =
1200 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, regno);
1201 for (regno = IA64_FR2_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
1202 frame->saved_regs[regno] =
1203 SIGCONTEXT_REGISTER_ADDRESS (frame->frame, regno);
1207 CORE_ADDR func_start;
1209 func_start = get_pc_function_start (frame->pc);
1210 examine_prologue (func_start, frame->pc, frame);
1215 ia64_get_saved_register (char *raw_buffer,
1218 struct frame_info *frame,
1220 enum lval_type *lval)
1224 if (!target_has_registers)
1225 error ("No registers.");
1227 if (optimized != NULL)
1236 is_dummy_frame = PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame);
1238 if (regnum == SP_REGNUM && frame->next)
1240 /* Handle SP values for all frames but the topmost. */
1241 store_address (raw_buffer, REGISTER_RAW_SIZE (regnum), frame->frame);
1243 else if (regnum == IA64_BSP_REGNUM)
1245 store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
1246 frame->extra_info->bsp);
1248 else if (regnum == IA64_VFP_REGNUM)
1250 /* If the function in question uses an automatic register (r32-r127)
1251 for the frame pointer, it'll be found by ia64_find_saved_register()
1252 above. If the function lacks one of these frame pointers, we can
1253 still provide a value since we know the size of the frame */
1254 CORE_ADDR vfp = frame->frame + frame->extra_info->mem_stack_frame_size;
1255 store_address (raw_buffer, REGISTER_RAW_SIZE (IA64_VFP_REGNUM), vfp);
1257 else if (IA64_PR0_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
1259 char *pr_raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
1261 enum lval_type pr_lval;
1264 ia64_get_saved_register (pr_raw_buffer, &pr_optim, &pr_addr,
1265 frame, IA64_PR_REGNUM, &pr_lval);
1266 if (IA64_PR16_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
1268 /* Fetch predicate register rename base from current frame
1269 marker for this frame. */
1270 int rrb_pr = (frame->extra_info->cfm >> 32) & 0x3f;
1272 /* Adjust the register number to account for register rotation. */
1273 regnum = IA64_PR16_REGNUM
1274 + ((regnum - IA64_PR16_REGNUM) + rrb_pr) % 48;
1276 prN_val = extract_bit_field ((unsigned char *) pr_raw_buffer,
1277 regnum - IA64_PR0_REGNUM, 1);
1278 store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), prN_val);
1280 else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
1282 char *unat_raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
1284 enum lval_type unat_lval;
1285 CORE_ADDR unat_addr;
1287 ia64_get_saved_register (unat_raw_buffer, &unat_optim, &unat_addr,
1288 frame, IA64_UNAT_REGNUM, &unat_lval);
1289 unatN_val = extract_bit_field ((unsigned char *) unat_raw_buffer,
1290 regnum - IA64_NAT0_REGNUM, 1);
1291 store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum),
1294 else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
1297 /* Find address of general register corresponding to nat bit we're
1299 CORE_ADDR gr_addr = 0;
1301 if (!is_dummy_frame)
1303 FRAME_INIT_SAVED_REGS (frame);
1304 gr_addr = frame->saved_regs[ regnum - IA64_NAT0_REGNUM
1309 /* Compute address of nat collection bits */
1310 CORE_ADDR nat_addr = gr_addr | 0x1f8;
1311 CORE_ADDR bsp = read_register (IA64_BSP_REGNUM);
1312 CORE_ADDR nat_collection;
1314 /* If our nat collection address is bigger than bsp, we have to get
1315 the nat collection from rnat. Otherwise, we fetch the nat
1316 collection from the computed address. */
1317 if (nat_addr >= bsp)
1318 nat_collection = read_register (IA64_RNAT_REGNUM);
1320 nat_collection = read_memory_integer (nat_addr, 8);
1321 nat_bit = (gr_addr >> 3) & 0x3f;
1322 natval = (nat_collection >> nat_bit) & 1;
1324 store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), natval);
1326 else if (regnum == IA64_IP_REGNUM)
1331 /* FIXME: Set *addrp, *lval when possible. */
1332 pc = ia64_frame_saved_pc (frame->next);
1338 store_address (raw_buffer, REGISTER_RAW_SIZE (IA64_IP_REGNUM), pc);
1340 else if (IA64_GR32_REGNUM <= regnum && regnum <= IA64_GR127_REGNUM)
1343 if (!is_dummy_frame)
1345 FRAME_INIT_SAVED_REGS (frame);
1346 addr = frame->saved_regs[regnum];
1352 *lval = lval_memory;
1355 read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
1359 /* r32 - r127 must be fetchable via memory. If they aren't,
1360 then the register is unavailable */
1361 memset (raw_buffer, 0, REGISTER_RAW_SIZE (regnum));
1366 if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
1368 /* Fetch floating point register rename base from current
1369 frame marker for this frame. */
1370 int rrb_fr = (frame->extra_info->cfm >> 25) & 0x7f;
1372 /* Adjust the floating point register number to account for
1373 register rotation. */
1374 regnum = IA64_FR32_REGNUM
1375 + ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
1378 deprecated_generic_get_saved_register (raw_buffer, optimized, addrp,
1379 frame, regnum, lval);
1383 /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
1384 EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc
1385 and TYPE is the type (which is known to be struct, union or array). */
1387 ia64_use_struct_convention (int gcc_p, struct type *type)
1389 struct type *float_elt_type;
1391 /* HFAs are structures (or arrays) consisting entirely of floating
1392 point values of the same length. Up to 8 of these are returned
1393 in registers. Don't use the struct convention when this is the
1395 float_elt_type = is_float_or_hfa_type (type);
1396 if (float_elt_type != NULL
1397 && TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type) <= 8)
1400 /* Other structs of length 32 or less are returned in r8-r11.
1401 Don't use the struct convention for those either. */
1402 return TYPE_LENGTH (type) > 32;
1406 ia64_extract_return_value (struct type *type, char *regbuf, char *valbuf)
1408 struct type *float_elt_type;
1410 float_elt_type = is_float_or_hfa_type (type);
1411 if (float_elt_type != NULL)
1414 int regnum = IA64_FR8_REGNUM;
1415 int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
1419 ia64_register_convert_to_virtual (regnum, float_elt_type,
1420 ®buf[REGISTER_BYTE (regnum)], valbuf + offset);
1421 offset += TYPE_LENGTH (float_elt_type);
1426 memcpy (valbuf, ®buf[REGISTER_BYTE (IA64_GR8_REGNUM)],
1427 TYPE_LENGTH (type));
1430 /* FIXME: Turn this into a stack of some sort. Unfortunately, something
1431 like this is necessary though since the IA-64 calling conventions specify
1432 that r8 is not preserved. */
1433 static CORE_ADDR struct_return_address;
1436 ia64_extract_struct_value_address (char *regbuf)
1438 /* FIXME: See above. */
1439 return struct_return_address;
1443 ia64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
1445 /* FIXME: See above. */
1446 /* Note that most of the work was done in ia64_push_arguments() */
1447 struct_return_address = addr;
1451 ia64_frameless_function_invocation (struct frame_info *frame)
1453 FRAME_INIT_SAVED_REGS (frame);
1454 return (frame->extra_info->mem_stack_frame_size == 0);
1458 ia64_saved_pc_after_call (struct frame_info *frame)
1460 return read_register (IA64_BR0_REGNUM);
1464 ia64_frame_args_address (struct frame_info *frame)
1466 /* frame->frame points at the SP for this frame; But we want the start
1467 of the frame, not the end. Calling frame chain will get his for us. */
1468 return ia64_frame_chain (frame);
1472 ia64_frame_locals_address (struct frame_info *frame)
1474 /* frame->frame points at the SP for this frame; But we want the start
1475 of the frame, not the end. Calling frame chain will get his for us. */
1476 return ia64_frame_chain (frame);
1480 ia64_init_extra_frame_info (int fromleaf, struct frame_info *frame)
1483 int next_frame_is_call_dummy = ((frame->next != NULL)
1484 && PC_IN_CALL_DUMMY (frame->next->pc, frame->next->frame,
1485 frame->next->frame));
1487 frame->extra_info = (struct frame_extra_info *)
1488 frame_obstack_alloc (sizeof (struct frame_extra_info));
1490 if (frame->next == 0)
1492 bsp = read_register (IA64_BSP_REGNUM);
1493 cfm = read_register (IA64_CFM_REGNUM);
1496 else if (frame->next->signal_handler_caller)
1498 bsp = read_sigcontext_register (frame->next, IA64_BSP_REGNUM);
1499 cfm = read_sigcontext_register (frame->next, IA64_CFM_REGNUM);
1501 else if (next_frame_is_call_dummy)
1503 bsp = deprecated_read_register_dummy (frame->next->pc,
1506 cfm = deprecated_read_register_dummy (frame->next->pc,
1512 struct frame_info *frn = frame->next;
1514 FRAME_INIT_SAVED_REGS (frn);
1516 if (frn->saved_regs[IA64_CFM_REGNUM] != 0)
1517 cfm = read_memory_integer (frn->saved_regs[IA64_CFM_REGNUM], 8);
1518 else if (frn->next && frn->next->signal_handler_caller)
1519 cfm = read_sigcontext_register (frn->next, IA64_PFS_REGNUM);
1521 && PC_IN_CALL_DUMMY (frn->next->pc, frn->next->frame,
1523 cfm = deprecated_read_register_dummy (frn->next->pc, frn->next->frame,
1526 cfm = read_register (IA64_PFS_REGNUM);
1528 bsp = frn->extra_info->bsp;
1530 frame->extra_info->cfm = cfm;
1531 frame->extra_info->sof = cfm & 0x7f;
1532 frame->extra_info->sol = (cfm >> 7) & 0x7f;
1533 if (frame->next == 0
1534 || frame->next->signal_handler_caller
1535 || next_frame_is_call_dummy)
1536 frame->extra_info->bsp = rse_address_add (bsp, -frame->extra_info->sof);
1538 frame->extra_info->bsp = rse_address_add (bsp, -frame->extra_info->sol);
1540 frame->extra_info->after_prologue = 0;
1541 frame->extra_info->mem_stack_frame_size = -1; /* Not yet determined */
1542 frame->extra_info->fp_reg = 0;
1546 is_float_or_hfa_type_recurse (struct type *t, struct type **etp)
1548 switch (TYPE_CODE (t))
1552 return TYPE_LENGTH (*etp) == TYPE_LENGTH (t);
1559 case TYPE_CODE_ARRAY:
1561 is_float_or_hfa_type_recurse (check_typedef (TYPE_TARGET_TYPE (t)),
1564 case TYPE_CODE_STRUCT:
1568 for (i = 0; i < TYPE_NFIELDS (t); i++)
1569 if (!is_float_or_hfa_type_recurse
1570 (check_typedef (TYPE_FIELD_TYPE (t, i)), etp))
1581 /* Determine if the given type is one of the floating point types or
1582 and HFA (which is a struct, array, or combination thereof whose
1583 bottom-most elements are all of the same floating point type.) */
1585 static struct type *
1586 is_float_or_hfa_type (struct type *t)
1588 struct type *et = 0;
1590 return is_float_or_hfa_type_recurse (t, &et) ? et : 0;
1594 /* Return 1 if the alignment of T is such that the next even slot
1595 should be used. Return 0, if the next available slot should
1596 be used. (See section 8.5.1 of the IA-64 Software Conventions
1597 and Runtime manual.) */
1600 slot_alignment_is_next_even (struct type *t)
1602 switch (TYPE_CODE (t))
1606 if (TYPE_LENGTH (t) > 8)
1610 case TYPE_CODE_ARRAY:
1612 slot_alignment_is_next_even (check_typedef (TYPE_TARGET_TYPE (t)));
1613 case TYPE_CODE_STRUCT:
1617 for (i = 0; i < TYPE_NFIELDS (t); i++)
1618 if (slot_alignment_is_next_even
1619 (check_typedef (TYPE_FIELD_TYPE (t, i))))
1628 /* Attempt to find (and return) the global pointer for the given
1631 This is a rather nasty bit of code searchs for the .dynamic section
1632 in the objfile corresponding to the pc of the function we're trying
1633 to call. Once it finds the addresses at which the .dynamic section
1634 lives in the child process, it scans the Elf64_Dyn entries for a
1635 DT_PLTGOT tag. If it finds one of these, the corresponding
1636 d_un.d_ptr value is the global pointer. */
1639 generic_elf_find_global_pointer (CORE_ADDR faddr)
1641 struct obj_section *faddr_sect;
1643 faddr_sect = find_pc_section (faddr);
1644 if (faddr_sect != NULL)
1646 struct obj_section *osect;
1648 ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
1650 if (strcmp (osect->the_bfd_section->name, ".dynamic") == 0)
1654 if (osect < faddr_sect->objfile->sections_end)
1659 while (addr < osect->endaddr)
1665 status = target_read_memory (addr, buf, sizeof (buf));
1668 tag = extract_signed_integer (buf, sizeof (buf));
1670 if (tag == DT_PLTGOT)
1672 CORE_ADDR global_pointer;
1674 status = target_read_memory (addr + 8, buf, sizeof (buf));
1677 global_pointer = extract_address (buf, sizeof (buf));
1680 return global_pointer;
1693 /* Given a function's address, attempt to find (and return) the
1694 corresponding (canonical) function descriptor. Return 0 if
1697 find_extant_func_descr (CORE_ADDR faddr)
1699 struct obj_section *faddr_sect;
1701 /* Return early if faddr is already a function descriptor */
1702 faddr_sect = find_pc_section (faddr);
1703 if (faddr_sect && strcmp (faddr_sect->the_bfd_section->name, ".opd") == 0)
1706 if (faddr_sect != NULL)
1708 struct obj_section *osect;
1709 ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
1711 if (strcmp (osect->the_bfd_section->name, ".opd") == 0)
1715 if (osect < faddr_sect->objfile->sections_end)
1720 while (addr < osect->endaddr)
1726 status = target_read_memory (addr, buf, sizeof (buf));
1729 faddr2 = extract_signed_integer (buf, sizeof (buf));
1731 if (faddr == faddr2)
1741 /* Attempt to find a function descriptor corresponding to the
1742 given address. If none is found, construct one on the
1743 stack using the address at fdaptr */
1746 find_func_descr (CORE_ADDR faddr, CORE_ADDR *fdaptr)
1750 fdesc = find_extant_func_descr (faddr);
1754 CORE_ADDR global_pointer;
1760 global_pointer = FIND_GLOBAL_POINTER (faddr);
1762 if (global_pointer == 0)
1763 global_pointer = read_register (IA64_GR1_REGNUM);
1765 store_address (buf, 8, faddr);
1766 store_address (buf + 8, 8, global_pointer);
1768 write_memory (fdesc, buf, 16);
1775 ia64_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
1776 int struct_return, CORE_ADDR struct_addr)
1782 int nslots, rseslots, memslots, slotnum, nfuncargs;
1784 CORE_ADDR bsp, cfm, pfs, new_bsp, funcdescaddr;
1788 /* Count the number of slots needed for the arguments */
1789 for (argno = 0; argno < nargs; argno++)
1792 type = check_typedef (VALUE_TYPE (arg));
1793 len = TYPE_LENGTH (type);
1795 if ((nslots & 1) && slot_alignment_is_next_even (type))
1798 if (TYPE_CODE (type) == TYPE_CODE_FUNC)
1801 nslots += (len + 7) / 8;
1804 /* Divvy up the slots between the RSE and the memory stack */
1805 rseslots = (nslots > 8) ? 8 : nslots;
1806 memslots = nslots - rseslots;
1808 /* Allocate a new RSE frame */
1809 cfm = read_register (IA64_CFM_REGNUM);
1811 bsp = read_register (IA64_BSP_REGNUM);
1812 bsp = rse_address_add (bsp, cfm & 0x7f);
1813 new_bsp = rse_address_add (bsp, rseslots);
1814 write_register (IA64_BSP_REGNUM, new_bsp);
1816 pfs = read_register (IA64_PFS_REGNUM);
1817 pfs &= 0xc000000000000000LL;
1818 pfs |= (cfm & 0xffffffffffffLL);
1819 write_register (IA64_PFS_REGNUM, pfs);
1821 cfm &= 0xc000000000000000LL;
1823 write_register (IA64_CFM_REGNUM, cfm);
1825 /* We will attempt to find function descriptors in the .opd segment,
1826 but if we can't we'll construct them ourselves. That being the
1827 case, we'll need to reserve space on the stack for them. */
1828 funcdescaddr = sp - nfuncargs * 16;
1829 funcdescaddr &= ~0xfLL;
1831 /* Adjust the stack pointer to it's new value. The calling conventions
1832 require us to have 16 bytes of scratch, plus whatever space is
1833 necessary for the memory slots and our function descriptors */
1834 sp = sp - 16 - (memslots + nfuncargs) * 8;
1835 sp &= ~0xfLL; /* Maintain 16 byte alignment */
1837 /* Place the arguments where they belong. The arguments will be
1838 either placed in the RSE backing store or on the memory stack.
1839 In addition, floating point arguments or HFAs are placed in
1840 floating point registers. */
1842 floatreg = IA64_FR8_REGNUM;
1843 for (argno = 0; argno < nargs; argno++)
1845 struct type *float_elt_type;
1848 type = check_typedef (VALUE_TYPE (arg));
1849 len = TYPE_LENGTH (type);
1851 /* Special handling for function parameters */
1853 && TYPE_CODE (type) == TYPE_CODE_PTR
1854 && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
1858 store_address (val_buf, 8,
1859 find_func_descr (extract_address (VALUE_CONTENTS (arg), 8),
1861 if (slotnum < rseslots)
1862 write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
1864 write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
1871 /* Skip odd slot if necessary... */
1872 if ((slotnum & 1) && slot_alignment_is_next_even (type))
1880 memset (val_buf, 0, 8);
1881 memcpy (val_buf, VALUE_CONTENTS (arg) + argoffset, (len > 8) ? 8 : len);
1883 if (slotnum < rseslots)
1884 write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
1886 write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
1893 /* Handle floating point types (including HFAs) */
1894 float_elt_type = is_float_or_hfa_type (type);
1895 if (float_elt_type != NULL)
1898 len = TYPE_LENGTH (type);
1899 while (len > 0 && floatreg < IA64_FR16_REGNUM)
1901 ia64_register_convert_to_raw (
1904 VALUE_CONTENTS (arg) + argoffset,
1905 ®isters[REGISTER_BYTE (floatreg)]);
1907 argoffset += TYPE_LENGTH (float_elt_type);
1908 len -= TYPE_LENGTH (float_elt_type);
1913 /* Store the struct return value in r8 if necessary. */
1916 store_address (®isters[REGISTER_BYTE (IA64_GR8_REGNUM)],
1917 REGISTER_RAW_SIZE (IA64_GR8_REGNUM),
1921 /* Sync gdb's idea of what the registers are with the target. */
1922 target_store_registers (-1);
1924 /* FIXME: This doesn't belong here! Instead, SAVE_DUMMY_FRAME_TOS needs
1925 to be defined to call generic_save_dummy_frame_tos(). But at the
1926 time of this writing, SAVE_DUMMY_FRAME_TOS wasn't gdbarch'd, so
1927 I chose to put this call here instead of using the old mechanisms.
1928 Once SAVE_DUMMY_FRAME_TOS is gdbarch'd, all we need to do is add the
1931 set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
1933 to ia64_gdbarch_init() and remove the line below. */
1934 generic_save_dummy_frame_tos (sp);
1940 ia64_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
1942 CORE_ADDR global_pointer = FIND_GLOBAL_POINTER (pc);
1944 if (global_pointer != 0)
1945 write_register (IA64_GR1_REGNUM, global_pointer);
1947 write_register (IA64_BR0_REGNUM, CALL_DUMMY_ADDRESS ());
1952 ia64_store_return_value (struct type *type, char *valbuf)
1954 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1956 ia64_register_convert_to_raw (type, IA64_FR8_REGNUM, valbuf,
1957 ®isters[REGISTER_BYTE (IA64_FR8_REGNUM)]);
1958 target_store_registers (IA64_FR8_REGNUM);
1961 write_register_bytes (REGISTER_BYTE (IA64_GR8_REGNUM),
1962 valbuf, TYPE_LENGTH (type));
1966 ia64_pop_frame (void)
1968 generic_pop_current_frame (ia64_pop_frame_regular);
1972 ia64_pop_frame_regular (struct frame_info *frame)
1975 CORE_ADDR bsp, cfm, pfs;
1977 FRAME_INIT_SAVED_REGS (frame);
1979 for (regno = 0; regno < ia64_num_regs; regno++)
1981 if (frame->saved_regs[regno]
1982 && (!(IA64_GR32_REGNUM <= regno && regno <= IA64_GR127_REGNUM))
1983 && regno != pc_regnum
1984 && regno != sp_regnum
1985 && regno != IA64_PFS_REGNUM
1986 && regno != IA64_CFM_REGNUM
1987 && regno != IA64_BSP_REGNUM
1988 && regno != IA64_BSPSTORE_REGNUM)
1990 write_register (regno,
1991 read_memory_integer (frame->saved_regs[regno],
1992 REGISTER_RAW_SIZE (regno)));
1996 write_register (sp_regnum, FRAME_CHAIN (frame));
1997 write_pc (FRAME_SAVED_PC (frame));
1999 cfm = read_register (IA64_CFM_REGNUM);
2001 if (frame->saved_regs[IA64_PFS_REGNUM])
2003 pfs = read_memory_integer (frame->saved_regs[IA64_PFS_REGNUM],
2004 REGISTER_RAW_SIZE (IA64_PFS_REGNUM));
2007 pfs = read_register (IA64_PFS_REGNUM);
2009 /* Compute the new bsp by *adding* the difference between the
2010 size of the frame and the size of the locals (both wrt the
2011 frame that we're going back to). This seems kind of strange,
2012 especially since it seems like we ought to be subtracting the
2013 size of the locals... and we should; but the Linux kernel
2014 wants bsp to be set at the end of all used registers. It's
2015 likely that this code will need to be revised to accomodate
2016 other operating systems. */
2017 bsp = rse_address_add (frame->extra_info->bsp,
2018 (pfs & 0x7f) - ((pfs >> 7) & 0x7f));
2019 write_register (IA64_BSP_REGNUM, bsp);
2021 /* FIXME: What becomes of the epilog count in the PFS? */
2022 cfm = (cfm & ~0xffffffffffffLL) | (pfs & 0xffffffffffffLL);
2023 write_register (IA64_CFM_REGNUM, cfm);
2025 flush_cached_frames ();
2029 ia64_remote_translate_xfer_address (CORE_ADDR memaddr, int nr_bytes,
2030 CORE_ADDR *targ_addr, int *targ_len)
2032 *targ_addr = memaddr;
2033 *targ_len = nr_bytes;
2037 process_note_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
2039 int *os_ident_ptr = obj;
2041 unsigned int sectsize;
2043 name = bfd_get_section_name (abfd, sect);
2044 sectsize = bfd_section_size (abfd, sect);
2045 if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0)
2047 unsigned int name_length, data_length, note_type;
2048 char *note = alloca (sectsize);
2050 bfd_get_section_contents (abfd, sect, note,
2051 (file_ptr) 0, (bfd_size_type) sectsize);
2053 name_length = bfd_h_get_32 (abfd, note);
2054 data_length = bfd_h_get_32 (abfd, note + 4);
2055 note_type = bfd_h_get_32 (abfd, note + 8);
2057 if (name_length == 4 && data_length == 16 && note_type == 1
2058 && strcmp (note + 12, "GNU") == 0)
2060 int os_number = bfd_h_get_32 (abfd, note + 16);
2062 /* The case numbers are from abi-tags in glibc */
2066 *os_ident_ptr = ELFOSABI_LINUX;
2069 *os_ident_ptr = ELFOSABI_HURD;
2072 *os_ident_ptr = ELFOSABI_SOLARIS;
2075 internal_error (__FILE__, __LINE__,
2076 "process_note_abi_sections: unknown OS number %d", os_number);
2083 static struct gdbarch *
2084 ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
2086 struct gdbarch *gdbarch;
2087 struct gdbarch_tdep *tdep;
2090 if (info.abfd != NULL
2091 && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
2093 os_ident = elf_elfheader (info.abfd)->e_ident[EI_OSABI];
2095 /* If os_ident is 0, it is not necessarily the case that we're
2096 on a SYSV system. (ELFOSABI_NONE is defined to be 0.)
2097 GNU/Linux uses a note section to record OS/ABI info, but
2098 leaves e_ident[EI_OSABI] zero. So we have to check for note
2102 bfd_map_over_sections (info.abfd,
2103 process_note_abi_tag_sections,
2110 for (arches = gdbarch_list_lookup_by_info (arches, &info);
2112 arches = gdbarch_list_lookup_by_info (arches->next, &info))
2114 tdep = gdbarch_tdep (arches->gdbarch);
2115 if (tdep &&tdep->os_ident == os_ident)
2116 return arches->gdbarch;
2119 tdep = xmalloc (sizeof (struct gdbarch_tdep));
2120 gdbarch = gdbarch_alloc (&info, tdep);
2121 tdep->os_ident = os_ident;
2124 /* Set the method of obtaining the sigcontext addresses at which
2125 registers are saved. The method of checking to see if
2126 native_find_global_pointer is nonzero to indicate that we're
2127 on AIX is kind of hokey, but I can't think of a better way
2129 if (os_ident == ELFOSABI_LINUX)
2130 tdep->sigcontext_register_address = ia64_linux_sigcontext_register_address;
2131 else if (native_find_global_pointer != 0)
2132 tdep->sigcontext_register_address = ia64_aix_sigcontext_register_address;
2134 tdep->sigcontext_register_address = 0;
2136 /* We know that GNU/Linux won't have to resort to the
2137 native_find_global_pointer hackery. But that's the only one we
2138 know about so far, so if native_find_global_pointer is set to
2139 something non-zero, then use it. Otherwise fall back to using
2140 generic_elf_find_global_pointer. This arrangement should (in
2141 theory) allow us to cross debug GNU/Linux binaries from an AIX
2143 if (os_ident == ELFOSABI_LINUX)
2144 tdep->find_global_pointer = generic_elf_find_global_pointer;
2145 else if (native_find_global_pointer != 0)
2146 tdep->find_global_pointer = native_find_global_pointer;
2148 tdep->find_global_pointer = generic_elf_find_global_pointer;
2150 set_gdbarch_short_bit (gdbarch, 16);
2151 set_gdbarch_int_bit (gdbarch, 32);
2152 set_gdbarch_long_bit (gdbarch, 64);
2153 set_gdbarch_long_long_bit (gdbarch, 64);
2154 set_gdbarch_float_bit (gdbarch, 32);
2155 set_gdbarch_double_bit (gdbarch, 64);
2156 set_gdbarch_long_double_bit (gdbarch, 64);
2157 set_gdbarch_ptr_bit (gdbarch, 64);
2159 set_gdbarch_num_regs (gdbarch, ia64_num_regs);
2160 set_gdbarch_sp_regnum (gdbarch, sp_regnum);
2161 set_gdbarch_fp_regnum (gdbarch, fp_regnum);
2162 set_gdbarch_pc_regnum (gdbarch, pc_regnum);
2163 set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
2165 set_gdbarch_register_name (gdbarch, ia64_register_name);
2166 set_gdbarch_register_size (gdbarch, 8);
2167 set_gdbarch_register_bytes (gdbarch, ia64_num_regs * 8 + 128*8);
2168 set_gdbarch_register_byte (gdbarch, ia64_register_byte);
2169 set_gdbarch_register_raw_size (gdbarch, ia64_register_raw_size);
2170 set_gdbarch_max_register_raw_size (gdbarch, 16);
2171 set_gdbarch_register_virtual_size (gdbarch, ia64_register_virtual_size);
2172 set_gdbarch_max_register_virtual_size (gdbarch, 16);
2173 set_gdbarch_register_virtual_type (gdbarch, ia64_register_virtual_type);
2175 set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue);
2177 set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
2178 set_gdbarch_frameless_function_invocation (gdbarch, ia64_frameless_function_invocation);
2180 set_gdbarch_saved_pc_after_call (gdbarch, ia64_saved_pc_after_call);
2182 set_gdbarch_frame_chain (gdbarch, ia64_frame_chain);
2183 set_gdbarch_frame_chain_valid (gdbarch, generic_func_frame_chain_valid);
2184 set_gdbarch_frame_saved_pc (gdbarch, ia64_frame_saved_pc);
2186 set_gdbarch_frame_init_saved_regs (gdbarch, ia64_frame_init_saved_regs);
2187 set_gdbarch_get_saved_register (gdbarch, ia64_get_saved_register);
2189 set_gdbarch_register_convertible (gdbarch, ia64_register_convertible);
2190 set_gdbarch_register_convert_to_virtual (gdbarch, ia64_register_convert_to_virtual);
2191 set_gdbarch_register_convert_to_raw (gdbarch, ia64_register_convert_to_raw);
2193 set_gdbarch_use_struct_convention (gdbarch, ia64_use_struct_convention);
2194 set_gdbarch_deprecated_extract_return_value (gdbarch, ia64_extract_return_value);
2196 set_gdbarch_store_struct_return (gdbarch, ia64_store_struct_return);
2197 set_gdbarch_deprecated_store_return_value (gdbarch, ia64_store_return_value);
2198 set_gdbarch_deprecated_extract_struct_value_address (gdbarch, ia64_extract_struct_value_address);
2200 set_gdbarch_memory_insert_breakpoint (gdbarch, ia64_memory_insert_breakpoint);
2201 set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
2202 set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc);
2203 set_gdbarch_read_pc (gdbarch, ia64_read_pc);
2204 set_gdbarch_write_pc (gdbarch, ia64_write_pc);
2206 /* Settings for calling functions in the inferior. */
2207 set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
2208 set_gdbarch_call_dummy_length (gdbarch, 0);
2209 set_gdbarch_push_arguments (gdbarch, ia64_push_arguments);
2210 set_gdbarch_push_return_address (gdbarch, ia64_push_return_address);
2211 set_gdbarch_pop_frame (gdbarch, ia64_pop_frame);
2213 set_gdbarch_call_dummy_p (gdbarch, 1);
2214 set_gdbarch_call_dummy_words (gdbarch, ia64_call_dummy_words);
2215 set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (ia64_call_dummy_words));
2216 set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
2217 set_gdbarch_init_extra_frame_info (gdbarch, ia64_init_extra_frame_info);
2218 set_gdbarch_frame_args_address (gdbarch, ia64_frame_args_address);
2219 set_gdbarch_frame_locals_address (gdbarch, ia64_frame_locals_address);
2221 /* We won't necessarily have a frame pointer and even if we do,
2222 it winds up being extraordinarly messy when attempting to find
2223 the frame chain. So for the purposes of creating frames (which
2224 is all read_fp() is used for), simply use the stack pointer value
2226 set_gdbarch_read_fp (gdbarch, generic_target_read_sp);
2228 /* Settings that should be unnecessary. */
2229 set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
2231 set_gdbarch_read_sp (gdbarch, generic_target_read_sp);
2232 set_gdbarch_write_sp (gdbarch, generic_target_write_sp);
2234 set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
2235 set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
2236 set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
2237 set_gdbarch_call_dummy_start_offset (gdbarch, 0);
2238 set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
2239 set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
2240 set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
2241 set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
2243 set_gdbarch_decr_pc_after_break (gdbarch, 0);
2244 set_gdbarch_function_start_offset (gdbarch, 0);
2245 set_gdbarch_frame_args_skip (gdbarch, 0);
2247 set_gdbarch_remote_translate_xfer_address (
2248 gdbarch, ia64_remote_translate_xfer_address);
2254 _initialize_ia64_tdep (void)
2256 register_gdbarch_init (bfd_arch_ia64, ia64_gdbarch_init);
2258 tm_print_insn = print_insn_ia64;
2259 tm_print_insn_info.bytes_per_line = SLOT_MULTIPLIER;