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16461d7d | 1 | /* Target-dependent code for the IA-64 for GDB, the GNU debugger. |
ca557f44 | 2 | |
0fb0cc75 | 3 | Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
7b6bb8da | 4 | 2009, 2010, 2011 Free Software Foundation, Inc. |
16461d7d KB |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
16461d7d KB |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
16461d7d KB |
20 | |
21 | #include "defs.h" | |
22 | #include "inferior.h" | |
16461d7d | 23 | #include "gdbcore.h" |
8064c6ae | 24 | #include "arch-utils.h" |
16461d7d | 25 | #include "floatformat.h" |
e6bb342a | 26 | #include "gdbtypes.h" |
4e052eda | 27 | #include "regcache.h" |
004d836a JJ |
28 | #include "reggroups.h" |
29 | #include "frame.h" | |
30 | #include "frame-base.h" | |
31 | #include "frame-unwind.h" | |
d16aafd8 | 32 | #include "doublest.h" |
fd0407d6 | 33 | #include "value.h" |
bd1ce8ba | 34 | #include "gdb_assert.h" |
16461d7d KB |
35 | #include "objfiles.h" |
36 | #include "elf/common.h" /* for DT_PLTGOT value */ | |
244bc108 | 37 | #include "elf-bfd.h" |
a89aa300 | 38 | #include "dis-asm.h" |
7d9b040b | 39 | #include "infcall.h" |
b33e8514 | 40 | #include "osabi.h" |
9fc9f5e2 | 41 | #include "ia64-tdep.h" |
0d5de010 | 42 | #include "cp-abi.h" |
16461d7d | 43 | |
968d1cb4 | 44 | #ifdef HAVE_LIBUNWIND_IA64_H |
8973ff21 | 45 | #include "elf/ia64.h" /* for PT_IA_64_UNWIND value */ |
968d1cb4 JJ |
46 | #include "libunwind-frame.h" |
47 | #include "libunwind-ia64.h" | |
c5a27d9c JJ |
48 | |
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. | |
52 | ||
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. | |
58 | ||
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. */ | |
63 | ||
64 | #define KERNEL_START 0xc000000000000000ULL | |
65 | ||
66 | static size_t ktab_size = 0; | |
67 | struct ia64_table_entry | |
68 | { | |
69 | uint64_t start_offset; | |
70 | uint64_t end_offset; | |
71 | uint64_t info_offset; | |
72 | }; | |
73 | ||
74 | static struct ia64_table_entry *ktab = NULL; | |
75 | ||
968d1cb4 JJ |
76 | #endif |
77 | ||
698cb3f0 KB |
78 | /* An enumeration of the different IA-64 instruction types. */ |
79 | ||
16461d7d KB |
80 | typedef enum instruction_type |
81 | { | |
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 */ | |
90 | } instruction_type; | |
91 | ||
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. | |
99 | ||
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 | |
1777feb0 | 105 | never want to also display the raw bytes the way objdump does. */ |
16461d7d KB |
106 | |
107 | #define SLOT_MULTIPLIER 1 | |
108 | ||
1777feb0 | 109 | /* Length in bytes of an instruction bundle. */ |
16461d7d KB |
110 | |
111 | #define BUNDLE_LEN 16 | |
112 | ||
939c61fa JK |
113 | /* See the saved memory layout comment for ia64_memory_insert_breakpoint. */ |
114 | ||
115 | #if BREAKPOINT_MAX < BUNDLE_LEN - 2 | |
116 | # error "BREAKPOINT_MAX < BUNDLE_LEN - 2" | |
117 | #endif | |
118 | ||
16461d7d KB |
119 | static gdbarch_init_ftype ia64_gdbarch_init; |
120 | ||
121 | static gdbarch_register_name_ftype ia64_register_name; | |
004d836a | 122 | static gdbarch_register_type_ftype ia64_register_type; |
16461d7d | 123 | static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc; |
16461d7d | 124 | static gdbarch_skip_prologue_ftype ia64_skip_prologue; |
64a5b29c | 125 | static struct type *is_float_or_hfa_type (struct type *t); |
e17a4113 UW |
126 | static CORE_ADDR ia64_find_global_pointer (struct gdbarch *gdbarch, |
127 | CORE_ADDR faddr); | |
16461d7d | 128 | |
004d836a | 129 | #define NUM_IA64_RAW_REGS 462 |
16461d7d | 130 | |
16461d7d KB |
131 | static int sp_regnum = IA64_GR12_REGNUM; |
132 | static int fp_regnum = IA64_VFP_REGNUM; | |
133 | static int lr_regnum = IA64_VRAP_REGNUM; | |
134 | ||
1777feb0 MS |
135 | /* NOTE: we treat the register stack registers r32-r127 as |
136 | pseudo-registers because they may not be accessible via the ptrace | |
137 | register get/set interfaces. */ | |
138 | ||
139 | enum pseudo_regs { FIRST_PSEUDO_REGNUM = NUM_IA64_RAW_REGS, | |
140 | VBOF_REGNUM = IA64_NAT127_REGNUM + 1, V32_REGNUM, | |
004d836a | 141 | V127_REGNUM = V32_REGNUM + 95, |
1777feb0 MS |
142 | VP0_REGNUM, VP16_REGNUM = VP0_REGNUM + 16, |
143 | VP63_REGNUM = VP0_REGNUM + 63, LAST_PSEUDO_REGNUM }; | |
16461d7d KB |
144 | |
145 | /* Array of register names; There should be ia64_num_regs strings in | |
146 | the initializer. */ | |
147 | ||
148 | static char *ia64_register_names[] = | |
149 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
150 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", | |
151 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", | |
152 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", | |
004d836a JJ |
153 | "", "", "", "", "", "", "", "", |
154 | "", "", "", "", "", "", "", "", | |
155 | "", "", "", "", "", "", "", "", | |
156 | "", "", "", "", "", "", "", "", | |
157 | "", "", "", "", "", "", "", "", | |
158 | "", "", "", "", "", "", "", "", | |
159 | "", "", "", "", "", "", "", "", | |
160 | "", "", "", "", "", "", "", "", | |
161 | "", "", "", "", "", "", "", "", | |
162 | "", "", "", "", "", "", "", "", | |
163 | "", "", "", "", "", "", "", "", | |
164 | "", "", "", "", "", "", "", "", | |
16461d7d KB |
165 | |
166 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", | |
167 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", | |
168 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", | |
169 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", | |
170 | "f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39", | |
171 | "f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47", | |
172 | "f48", "f49", "f50", "f51", "f52", "f53", "f54", "f55", | |
173 | "f56", "f57", "f58", "f59", "f60", "f61", "f62", "f63", | |
174 | "f64", "f65", "f66", "f67", "f68", "f69", "f70", "f71", | |
175 | "f72", "f73", "f74", "f75", "f76", "f77", "f78", "f79", | |
176 | "f80", "f81", "f82", "f83", "f84", "f85", "f86", "f87", | |
177 | "f88", "f89", "f90", "f91", "f92", "f93", "f94", "f95", | |
178 | "f96", "f97", "f98", "f99", "f100", "f101", "f102", "f103", | |
179 | "f104", "f105", "f106", "f107", "f108", "f109", "f110", "f111", | |
180 | "f112", "f113", "f114", "f115", "f116", "f117", "f118", "f119", | |
181 | "f120", "f121", "f122", "f123", "f124", "f125", "f126", "f127", | |
182 | ||
004d836a JJ |
183 | "", "", "", "", "", "", "", "", |
184 | "", "", "", "", "", "", "", "", | |
185 | "", "", "", "", "", "", "", "", | |
186 | "", "", "", "", "", "", "", "", | |
187 | "", "", "", "", "", "", "", "", | |
188 | "", "", "", "", "", "", "", "", | |
189 | "", "", "", "", "", "", "", "", | |
190 | "", "", "", "", "", "", "", "", | |
16461d7d KB |
191 | |
192 | "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", | |
193 | ||
194 | "vfp", "vrap", | |
195 | ||
196 | "pr", "ip", "psr", "cfm", | |
197 | ||
198 | "kr0", "kr1", "kr2", "kr3", "kr4", "kr5", "kr6", "kr7", | |
199 | "", "", "", "", "", "", "", "", | |
200 | "rsc", "bsp", "bspstore", "rnat", | |
201 | "", "fcr", "", "", | |
202 | "eflag", "csd", "ssd", "cflg", "fsr", "fir", "fdr", "", | |
203 | "ccv", "", "", "", "unat", "", "", "", | |
204 | "fpsr", "", "", "", "itc", | |
205 | "", "", "", "", "", "", "", "", "", "", | |
206 | "", "", "", "", "", "", "", "", "", | |
207 | "pfs", "lc", "ec", | |
208 | "", "", "", "", "", "", "", "", "", "", | |
209 | "", "", "", "", "", "", "", "", "", "", | |
210 | "", "", "", "", "", "", "", "", "", "", | |
211 | "", "", "", "", "", "", "", "", "", "", | |
212 | "", "", "", "", "", "", "", "", "", "", | |
213 | "", "", "", "", "", "", "", "", "", "", | |
214 | "", | |
215 | "nat0", "nat1", "nat2", "nat3", "nat4", "nat5", "nat6", "nat7", | |
216 | "nat8", "nat9", "nat10", "nat11", "nat12", "nat13", "nat14", "nat15", | |
217 | "nat16", "nat17", "nat18", "nat19", "nat20", "nat21", "nat22", "nat23", | |
218 | "nat24", "nat25", "nat26", "nat27", "nat28", "nat29", "nat30", "nat31", | |
219 | "nat32", "nat33", "nat34", "nat35", "nat36", "nat37", "nat38", "nat39", | |
220 | "nat40", "nat41", "nat42", "nat43", "nat44", "nat45", "nat46", "nat47", | |
221 | "nat48", "nat49", "nat50", "nat51", "nat52", "nat53", "nat54", "nat55", | |
222 | "nat56", "nat57", "nat58", "nat59", "nat60", "nat61", "nat62", "nat63", | |
223 | "nat64", "nat65", "nat66", "nat67", "nat68", "nat69", "nat70", "nat71", | |
224 | "nat72", "nat73", "nat74", "nat75", "nat76", "nat77", "nat78", "nat79", | |
225 | "nat80", "nat81", "nat82", "nat83", "nat84", "nat85", "nat86", "nat87", | |
226 | "nat88", "nat89", "nat90", "nat91", "nat92", "nat93", "nat94", "nat95", | |
227 | "nat96", "nat97", "nat98", "nat99", "nat100","nat101","nat102","nat103", | |
228 | "nat104","nat105","nat106","nat107","nat108","nat109","nat110","nat111", | |
229 | "nat112","nat113","nat114","nat115","nat116","nat117","nat118","nat119", | |
230 | "nat120","nat121","nat122","nat123","nat124","nat125","nat126","nat127", | |
004d836a JJ |
231 | |
232 | "bof", | |
233 | ||
234 | "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", | |
235 | "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", | |
236 | "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", | |
237 | "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63", | |
238 | "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71", | |
239 | "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79", | |
240 | "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87", | |
241 | "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95", | |
242 | "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103", | |
243 | "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111", | |
244 | "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119", | |
245 | "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127", | |
246 | ||
247 | "p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7", | |
248 | "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15", | |
249 | "p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23", | |
250 | "p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31", | |
251 | "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39", | |
252 | "p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47", | |
253 | "p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55", | |
254 | "p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63", | |
16461d7d KB |
255 | }; |
256 | ||
004d836a JJ |
257 | struct ia64_frame_cache |
258 | { | |
259 | CORE_ADDR base; /* frame pointer base for frame */ | |
260 | CORE_ADDR pc; /* function start pc for frame */ | |
261 | CORE_ADDR saved_sp; /* stack pointer for frame */ | |
262 | CORE_ADDR bsp; /* points at r32 for the current frame */ | |
263 | CORE_ADDR cfm; /* cfm value for current frame */ | |
4afcc598 | 264 | CORE_ADDR prev_cfm; /* cfm value for previous frame */ |
004d836a | 265 | int frameless; |
1777feb0 MS |
266 | int sof; /* Size of frame (decoded from cfm value). */ |
267 | int sol; /* Size of locals (decoded from cfm value). */ | |
268 | int sor; /* Number of rotating registers (decoded from | |
269 | cfm value). */ | |
004d836a JJ |
270 | CORE_ADDR after_prologue; |
271 | /* Address of first instruction after the last | |
272 | prologue instruction; Note that there may | |
273 | be instructions from the function's body | |
1777feb0 | 274 | intermingled with the prologue. */ |
004d836a JJ |
275 | int mem_stack_frame_size; |
276 | /* Size of the memory stack frame (may be zero), | |
1777feb0 | 277 | or -1 if it has not been determined yet. */ |
004d836a | 278 | int fp_reg; /* Register number (if any) used a frame pointer |
244bc108 | 279 | for this frame. 0 if no register is being used |
1777feb0 | 280 | as the frame pointer. */ |
004d836a JJ |
281 | |
282 | /* Saved registers. */ | |
283 | CORE_ADDR saved_regs[NUM_IA64_RAW_REGS]; | |
284 | ||
285 | }; | |
244bc108 | 286 | |
27067745 UW |
287 | static int |
288 | floatformat_valid (const struct floatformat *fmt, const void *from) | |
289 | { | |
290 | return 1; | |
291 | } | |
292 | ||
7458e667 | 293 | static const struct floatformat floatformat_ia64_ext_little = |
27067745 UW |
294 | { |
295 | floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64, | |
7458e667 JB |
296 | floatformat_intbit_yes, "floatformat_ia64_ext_little", floatformat_valid, NULL |
297 | }; | |
298 | ||
299 | static const struct floatformat floatformat_ia64_ext_big = | |
300 | { | |
301 | floatformat_big, 82, 46, 47, 17, 65535, 0x1ffff, 64, 64, | |
302 | floatformat_intbit_yes, "floatformat_ia64_ext_big", floatformat_valid | |
27067745 UW |
303 | }; |
304 | ||
305 | static const struct floatformat *floatformats_ia64_ext[2] = | |
306 | { | |
7458e667 JB |
307 | &floatformat_ia64_ext_big, |
308 | &floatformat_ia64_ext_little | |
27067745 UW |
309 | }; |
310 | ||
311 | static struct type * | |
312 | ia64_ext_type (struct gdbarch *gdbarch) | |
313 | { | |
314 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
315 | ||
316 | if (!tdep->ia64_ext_type) | |
317 | tdep->ia64_ext_type | |
e9bb382b | 318 | = arch_float_type (gdbarch, 128, "builtin_type_ia64_ext", |
27067745 UW |
319 | floatformats_ia64_ext); |
320 | ||
321 | return tdep->ia64_ext_type; | |
322 | } | |
323 | ||
63807e1d | 324 | static int |
004d836a JJ |
325 | ia64_register_reggroup_p (struct gdbarch *gdbarch, int regnum, |
326 | struct reggroup *group) | |
16461d7d | 327 | { |
004d836a JJ |
328 | int vector_p; |
329 | int float_p; | |
330 | int raw_p; | |
331 | if (group == all_reggroup) | |
332 | return 1; | |
333 | vector_p = TYPE_VECTOR (register_type (gdbarch, regnum)); | |
334 | float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT; | |
335 | raw_p = regnum < NUM_IA64_RAW_REGS; | |
336 | if (group == float_reggroup) | |
337 | return float_p; | |
338 | if (group == vector_reggroup) | |
339 | return vector_p; | |
340 | if (group == general_reggroup) | |
341 | return (!vector_p && !float_p); | |
342 | if (group == save_reggroup || group == restore_reggroup) | |
343 | return raw_p; | |
344 | return 0; | |
16461d7d KB |
345 | } |
346 | ||
004d836a | 347 | static const char * |
d93859e2 | 348 | ia64_register_name (struct gdbarch *gdbarch, int reg) |
16461d7d | 349 | { |
004d836a | 350 | return ia64_register_names[reg]; |
16461d7d KB |
351 | } |
352 | ||
004d836a JJ |
353 | struct type * |
354 | ia64_register_type (struct gdbarch *arch, int reg) | |
16461d7d | 355 | { |
004d836a | 356 | if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM) |
27067745 | 357 | return ia64_ext_type (arch); |
004d836a | 358 | else |
0dfff4cb | 359 | return builtin_type (arch)->builtin_long; |
16461d7d KB |
360 | } |
361 | ||
a78f21af | 362 | static int |
d3f73121 | 363 | ia64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg) |
16461d7d | 364 | { |
004d836a JJ |
365 | if (reg >= IA64_GR32_REGNUM && reg <= IA64_GR127_REGNUM) |
366 | return V32_REGNUM + (reg - IA64_GR32_REGNUM); | |
367 | return reg; | |
16461d7d KB |
368 | } |
369 | ||
16461d7d KB |
370 | |
371 | /* Extract ``len'' bits from an instruction bundle starting at | |
372 | bit ``from''. */ | |
373 | ||
244bc108 | 374 | static long long |
15c1e57f | 375 | extract_bit_field (const char *bundle, int from, int len) |
16461d7d KB |
376 | { |
377 | long long result = 0LL; | |
378 | int to = from + len; | |
379 | int from_byte = from / 8; | |
380 | int to_byte = to / 8; | |
381 | unsigned char *b = (unsigned char *) bundle; | |
382 | unsigned char c; | |
383 | int lshift; | |
384 | int i; | |
385 | ||
386 | c = b[from_byte]; | |
387 | if (from_byte == to_byte) | |
388 | c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8); | |
389 | result = c >> (from % 8); | |
390 | lshift = 8 - (from % 8); | |
391 | ||
392 | for (i = from_byte+1; i < to_byte; i++) | |
393 | { | |
394 | result |= ((long long) b[i]) << lshift; | |
395 | lshift += 8; | |
396 | } | |
397 | ||
398 | if (from_byte < to_byte && (to % 8 != 0)) | |
399 | { | |
400 | c = b[to_byte]; | |
401 | c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8); | |
402 | result |= ((long long) c) << lshift; | |
403 | } | |
404 | ||
405 | return result; | |
406 | } | |
407 | ||
1777feb0 | 408 | /* Replace the specified bits in an instruction bundle. */ |
16461d7d | 409 | |
244bc108 | 410 | static void |
16461d7d KB |
411 | replace_bit_field (char *bundle, long long val, int from, int len) |
412 | { | |
413 | int to = from + len; | |
414 | int from_byte = from / 8; | |
415 | int to_byte = to / 8; | |
416 | unsigned char *b = (unsigned char *) bundle; | |
417 | unsigned char c; | |
418 | ||
419 | if (from_byte == to_byte) | |
420 | { | |
421 | unsigned char left, right; | |
422 | c = b[from_byte]; | |
423 | left = (c >> (to % 8)) << (to % 8); | |
424 | right = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8); | |
425 | c = (unsigned char) (val & 0xff); | |
426 | c = (unsigned char) (c << (from % 8 + 8 - to % 8)) >> (8 - to % 8); | |
427 | c |= right | left; | |
428 | b[from_byte] = c; | |
429 | } | |
430 | else | |
431 | { | |
432 | int i; | |
433 | c = b[from_byte]; | |
434 | c = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8); | |
435 | c = c | (val << (from % 8)); | |
436 | b[from_byte] = c; | |
437 | val >>= 8 - from % 8; | |
438 | ||
439 | for (i = from_byte+1; i < to_byte; i++) | |
440 | { | |
441 | c = val & 0xff; | |
442 | val >>= 8; | |
443 | b[i] = c; | |
444 | } | |
445 | ||
446 | if (to % 8 != 0) | |
447 | { | |
448 | unsigned char cv = (unsigned char) val; | |
449 | c = b[to_byte]; | |
450 | c = c >> (to % 8) << (to % 8); | |
451 | c |= ((unsigned char) (cv << (8 - to % 8))) >> (8 - to % 8); | |
452 | b[to_byte] = c; | |
453 | } | |
454 | } | |
455 | } | |
456 | ||
457 | /* Return the contents of slot N (for N = 0, 1, or 2) in | |
1777feb0 | 458 | and instruction bundle. */ |
16461d7d | 459 | |
244bc108 | 460 | static long long |
2fc3ac7e | 461 | slotN_contents (char *bundle, int slotnum) |
16461d7d KB |
462 | { |
463 | return extract_bit_field (bundle, 5+41*slotnum, 41); | |
464 | } | |
465 | ||
1777feb0 | 466 | /* Store an instruction in an instruction bundle. */ |
16461d7d | 467 | |
244bc108 | 468 | static void |
2fc3ac7e | 469 | replace_slotN_contents (char *bundle, long long instr, int slotnum) |
16461d7d KB |
470 | { |
471 | replace_bit_field (bundle, instr, 5+41*slotnum, 41); | |
472 | } | |
473 | ||
939c61fa | 474 | static const enum instruction_type template_encoding_table[32][3] = |
16461d7d KB |
475 | { |
476 | { M, I, I }, /* 00 */ | |
477 | { M, I, I }, /* 01 */ | |
478 | { M, I, I }, /* 02 */ | |
479 | { M, I, I }, /* 03 */ | |
480 | { M, L, X }, /* 04 */ | |
481 | { M, L, X }, /* 05 */ | |
482 | { undefined, undefined, undefined }, /* 06 */ | |
483 | { undefined, undefined, undefined }, /* 07 */ | |
484 | { M, M, I }, /* 08 */ | |
485 | { M, M, I }, /* 09 */ | |
486 | { M, M, I }, /* 0A */ | |
487 | { M, M, I }, /* 0B */ | |
488 | { M, F, I }, /* 0C */ | |
489 | { M, F, I }, /* 0D */ | |
490 | { M, M, F }, /* 0E */ | |
491 | { M, M, F }, /* 0F */ | |
492 | { M, I, B }, /* 10 */ | |
493 | { M, I, B }, /* 11 */ | |
494 | { M, B, B }, /* 12 */ | |
495 | { M, B, B }, /* 13 */ | |
496 | { undefined, undefined, undefined }, /* 14 */ | |
497 | { undefined, undefined, undefined }, /* 15 */ | |
498 | { B, B, B }, /* 16 */ | |
499 | { B, B, B }, /* 17 */ | |
500 | { M, M, B }, /* 18 */ | |
501 | { M, M, B }, /* 19 */ | |
502 | { undefined, undefined, undefined }, /* 1A */ | |
503 | { undefined, undefined, undefined }, /* 1B */ | |
504 | { M, F, B }, /* 1C */ | |
505 | { M, F, B }, /* 1D */ | |
506 | { undefined, undefined, undefined }, /* 1E */ | |
507 | { undefined, undefined, undefined }, /* 1F */ | |
508 | }; | |
509 | ||
510 | /* Fetch and (partially) decode an instruction at ADDR and return the | |
511 | address of the next instruction to fetch. */ | |
512 | ||
513 | static CORE_ADDR | |
514 | fetch_instruction (CORE_ADDR addr, instruction_type *it, long long *instr) | |
515 | { | |
516 | char bundle[BUNDLE_LEN]; | |
517 | int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER; | |
518 | long long template; | |
519 | int val; | |
520 | ||
c26e1c2b KB |
521 | /* Warn about slot numbers greater than 2. We used to generate |
522 | an error here on the assumption that the user entered an invalid | |
523 | address. But, sometimes GDB itself requests an invalid address. | |
524 | This can (easily) happen when execution stops in a function for | |
525 | which there are no symbols. The prologue scanner will attempt to | |
526 | find the beginning of the function - if the nearest symbol | |
527 | happens to not be aligned on a bundle boundary (16 bytes), the | |
528 | resulting starting address will cause GDB to think that the slot | |
529 | number is too large. | |
530 | ||
531 | So we warn about it and set the slot number to zero. It is | |
532 | not necessarily a fatal condition, particularly if debugging | |
533 | at the assembly language level. */ | |
16461d7d | 534 | if (slotnum > 2) |
c26e1c2b | 535 | { |
8a3fe4f8 AC |
536 | warning (_("Can't fetch instructions for slot numbers greater than 2.\n" |
537 | "Using slot 0 instead")); | |
c26e1c2b KB |
538 | slotnum = 0; |
539 | } | |
16461d7d KB |
540 | |
541 | addr &= ~0x0f; | |
542 | ||
543 | val = target_read_memory (addr, bundle, BUNDLE_LEN); | |
544 | ||
545 | if (val != 0) | |
546 | return 0; | |
547 | ||
548 | *instr = slotN_contents (bundle, slotnum); | |
549 | template = extract_bit_field (bundle, 0, 5); | |
550 | *it = template_encoding_table[(int)template][slotnum]; | |
551 | ||
64a5b29c | 552 | if (slotnum == 2 || (slotnum == 1 && *it == L)) |
16461d7d KB |
553 | addr += 16; |
554 | else | |
555 | addr += (slotnum + 1) * SLOT_MULTIPLIER; | |
556 | ||
557 | return addr; | |
558 | } | |
559 | ||
560 | /* There are 5 different break instructions (break.i, break.b, | |
561 | break.m, break.f, and break.x), but they all have the same | |
562 | encoding. (The five bit template in the low five bits of the | |
563 | instruction bundle distinguishes one from another.) | |
564 | ||
565 | The runtime architecture manual specifies that break instructions | |
566 | used for debugging purposes must have the upper two bits of the 21 | |
567 | bit immediate set to a 0 and a 1 respectively. A breakpoint | |
568 | instruction encodes the most significant bit of its 21 bit | |
569 | immediate at bit 36 of the 41 bit instruction. The penultimate msb | |
570 | is at bit 25 which leads to the pattern below. | |
571 | ||
572 | Originally, I had this set up to do, e.g, a "break.i 0x80000" But | |
573 | it turns out that 0x80000 was used as the syscall break in the early | |
574 | simulators. So I changed the pattern slightly to do "break.i 0x080001" | |
575 | instead. But that didn't work either (I later found out that this | |
576 | pattern was used by the simulator that I was using.) So I ended up | |
939c61fa JK |
577 | using the pattern seen below. |
578 | ||
579 | SHADOW_CONTENTS has byte-based addressing (PLACED_ADDRESS and SHADOW_LEN) | |
580 | while we need bit-based addressing as the instructions length is 41 bits and | |
581 | we must not modify/corrupt the adjacent slots in the same bundle. | |
582 | Fortunately we may store larger memory incl. the adjacent bits with the | |
583 | original memory content (not the possibly already stored breakpoints there). | |
584 | We need to be careful in ia64_memory_remove_breakpoint to always restore | |
585 | only the specific bits of this instruction ignoring any adjacent stored | |
586 | bits. | |
587 | ||
588 | We use the original addressing with the low nibble in the range <0..2> which | |
589 | gets incorrectly interpreted by generic non-ia64 breakpoint_restore_shadows | |
590 | as the direct byte offset of SHADOW_CONTENTS. We store whole BUNDLE_LEN | |
591 | bytes just without these two possibly skipped bytes to not to exceed to the | |
592 | next bundle. | |
593 | ||
594 | If we would like to store the whole bundle to SHADOW_CONTENTS we would have | |
595 | to store already the base address (`address & ~0x0f') into PLACED_ADDRESS. | |
596 | In such case there is no other place where to store | |
597 | SLOTNUM (`adress & 0x0f', value in the range <0..2>). We need to know | |
598 | SLOTNUM in ia64_memory_remove_breakpoint. | |
599 | ||
ca8b5032 JB |
600 | There is one special case where we need to be extra careful: |
601 | L-X instructions, which are instructions that occupy 2 slots | |
602 | (The L part is always in slot 1, and the X part is always in | |
603 | slot 2). We must refuse to insert breakpoints for an address | |
604 | that points at slot 2 of a bundle where an L-X instruction is | |
605 | present, since there is logically no instruction at that address. | |
606 | However, to make things more interesting, the opcode of L-X | |
607 | instructions is located in slot 2. This means that, to insert | |
608 | a breakpoint at an address that points to slot 1, we actually | |
609 | need to write the breakpoint in slot 2! Slot 1 is actually | |
610 | the extended operand, so writing the breakpoint there would not | |
611 | have the desired effect. Another side-effect of this issue | |
612 | is that we need to make sure that the shadow contents buffer | |
613 | does save byte 15 of our instruction bundle (this is the tail | |
614 | end of slot 2, which wouldn't be saved if we were to insert | |
615 | the breakpoint in slot 1). | |
616 | ||
939c61fa JK |
617 | ia64 16-byte bundle layout: |
618 | | 5 bits | slot 0 with 41 bits | slot 1 with 41 bits | slot 2 with 41 bits | | |
619 | ||
620 | The current addressing used by the code below: | |
621 | original PC placed_address placed_size required covered | |
622 | == bp_tgt->shadow_len reqd \subset covered | |
73a9714c JB |
623 | 0xABCDE0 0xABCDE0 0x10 <0x0...0x5> <0x0..0xF> |
624 | 0xABCDE1 0xABCDE1 0xF <0x5...0xA> <0x1..0xF> | |
939c61fa | 625 | 0xABCDE2 0xABCDE2 0xE <0xA...0xF> <0x2..0xF> |
ca8b5032 JB |
626 | |
627 | L-X instructions are treated a little specially, as explained above: | |
628 | 0xABCDE1 0xABCDE1 0xF <0xA...0xF> <0x1..0xF> | |
629 | ||
939c61fa JK |
630 | `objdump -d' and some other tools show a bit unjustified offsets: |
631 | original PC byte where starts the instruction objdump offset | |
632 | 0xABCDE0 0xABCDE0 0xABCDE0 | |
633 | 0xABCDE1 0xABCDE5 0xABCDE6 | |
634 | 0xABCDE2 0xABCDEA 0xABCDEC | |
635 | */ | |
16461d7d | 636 | |
aaab4dba | 637 | #define IA64_BREAKPOINT 0x00003333300LL |
16461d7d KB |
638 | |
639 | static int | |
ae4b2284 MD |
640 | ia64_memory_insert_breakpoint (struct gdbarch *gdbarch, |
641 | struct bp_target_info *bp_tgt) | |
16461d7d | 642 | { |
8181d85f | 643 | CORE_ADDR addr = bp_tgt->placed_address; |
939c61fa | 644 | gdb_byte bundle[BUNDLE_LEN]; |
73a9714c | 645 | int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER, shadow_slotnum; |
939c61fa | 646 | long long instr_breakpoint; |
16461d7d | 647 | int val; |
126fa72d | 648 | int template; |
939c61fa | 649 | struct cleanup *cleanup; |
16461d7d KB |
650 | |
651 | if (slotnum > 2) | |
8a3fe4f8 | 652 | error (_("Can't insert breakpoint for slot numbers greater than 2.")); |
16461d7d KB |
653 | |
654 | addr &= ~0x0f; | |
655 | ||
b554e4bd JK |
656 | /* Enable the automatic memory restoration from breakpoints while |
657 | we read our instruction bundle for the purpose of SHADOW_CONTENTS. | |
658 | Otherwise, we could possibly store into the shadow parts of the adjacent | |
939c61fa JK |
659 | placed breakpoints. It is due to our SHADOW_CONTENTS overlapping the real |
660 | breakpoint instruction bits region. */ | |
b554e4bd | 661 | cleanup = make_show_memory_breakpoints_cleanup (0); |
16461d7d | 662 | val = target_read_memory (addr, bundle, BUNDLE_LEN); |
fbfaaae5 JK |
663 | if (val != 0) |
664 | { | |
665 | do_cleanups (cleanup); | |
666 | return val; | |
667 | } | |
126fa72d | 668 | |
73a9714c JB |
669 | /* SHADOW_SLOTNUM saves the original slot number as expected by the caller |
670 | for addressing the SHADOW_CONTENTS placement. */ | |
671 | shadow_slotnum = slotnum; | |
672 | ||
ca8b5032 JB |
673 | /* Always cover the last byte of the bundle in case we are inserting |
674 | a breakpoint on an L-X instruction. */ | |
73a9714c JB |
675 | bp_tgt->shadow_len = BUNDLE_LEN - shadow_slotnum; |
676 | ||
35ec2a3e | 677 | template = extract_bit_field (bundle, 0, 5); |
73a9714c JB |
678 | if (template_encoding_table[template][slotnum] == X) |
679 | { | |
ca8b5032 JB |
680 | /* X unit types can only be used in slot 2, and are actually |
681 | part of a 2-slot L-X instruction. We cannot break at this | |
682 | address, as this is the second half of an instruction that | |
683 | lives in slot 1 of that bundle. */ | |
73a9714c JB |
684 | gdb_assert (slotnum == 2); |
685 | error (_("Can't insert breakpoint for non-existing slot X")); | |
686 | } | |
687 | if (template_encoding_table[template][slotnum] == L) | |
688 | { | |
ca8b5032 JB |
689 | /* L unit types can only be used in slot 1. But the associated |
690 | opcode for that instruction is in slot 2, so bump the slot number | |
691 | accordingly. */ | |
73a9714c JB |
692 | gdb_assert (slotnum == 1); |
693 | slotnum = 2; | |
694 | } | |
939c61fa JK |
695 | |
696 | /* Store the whole bundle, except for the initial skipped bytes by the slot | |
697 | number interpreted as bytes offset in PLACED_ADDRESS. */ | |
1777feb0 MS |
698 | memcpy (bp_tgt->shadow_contents, bundle + shadow_slotnum, |
699 | bp_tgt->shadow_len); | |
939c61fa | 700 | |
b554e4bd JK |
701 | /* Re-read the same bundle as above except that, this time, read it in order |
702 | to compute the new bundle inside which we will be inserting the | |
703 | breakpoint. Therefore, disable the automatic memory restoration from | |
704 | breakpoints while we read our instruction bundle. Otherwise, the general | |
705 | restoration mechanism kicks in and we would possibly remove parts of the | |
706 | adjacent placed breakpoints. It is due to our SHADOW_CONTENTS overlapping | |
707 | the real breakpoint instruction bits region. */ | |
708 | make_show_memory_breakpoints_cleanup (1); | |
fbfaaae5 JK |
709 | val = target_read_memory (addr, bundle, BUNDLE_LEN); |
710 | if (val != 0) | |
711 | { | |
712 | do_cleanups (cleanup); | |
713 | return val; | |
714 | } | |
b554e4bd | 715 | |
939c61fa JK |
716 | /* Breakpoints already present in the code will get deteacted and not get |
717 | reinserted by bp_loc_is_permanent. Multiple breakpoints at the same | |
718 | location cannot induce the internal error as they are optimized into | |
719 | a single instance by update_global_location_list. */ | |
720 | instr_breakpoint = slotN_contents (bundle, slotnum); | |
721 | if (instr_breakpoint == IA64_BREAKPOINT) | |
722 | internal_error (__FILE__, __LINE__, | |
723 | _("Address %s already contains a breakpoint."), | |
5af949e3 | 724 | paddress (gdbarch, bp_tgt->placed_address)); |
aaab4dba | 725 | replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum); |
939c61fa | 726 | |
b554e4bd JK |
727 | bp_tgt->placed_size = bp_tgt->shadow_len; |
728 | ||
73a9714c | 729 | val = target_write_memory (addr + shadow_slotnum, bundle + shadow_slotnum, |
fbfaaae5 | 730 | bp_tgt->shadow_len); |
16461d7d | 731 | |
939c61fa | 732 | do_cleanups (cleanup); |
16461d7d KB |
733 | return val; |
734 | } | |
735 | ||
736 | static int | |
ae4b2284 MD |
737 | ia64_memory_remove_breakpoint (struct gdbarch *gdbarch, |
738 | struct bp_target_info *bp_tgt) | |
16461d7d | 739 | { |
8181d85f | 740 | CORE_ADDR addr = bp_tgt->placed_address; |
939c61fa | 741 | gdb_byte bundle_mem[BUNDLE_LEN], bundle_saved[BUNDLE_LEN]; |
73a9714c | 742 | int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER, shadow_slotnum; |
939c61fa | 743 | long long instr_breakpoint, instr_saved; |
16461d7d | 744 | int val; |
126fa72d | 745 | int template; |
1de34ab7 | 746 | struct cleanup *cleanup; |
16461d7d KB |
747 | |
748 | addr &= ~0x0f; | |
749 | ||
1de34ab7 JB |
750 | /* Disable the automatic memory restoration from breakpoints while |
751 | we read our instruction bundle. Otherwise, the general restoration | |
939c61fa JK |
752 | mechanism kicks in and we would possibly remove parts of the adjacent |
753 | placed breakpoints. It is due to our SHADOW_CONTENTS overlapping the real | |
754 | breakpoint instruction bits region. */ | |
1de34ab7 | 755 | cleanup = make_show_memory_breakpoints_cleanup (1); |
939c61fa | 756 | val = target_read_memory (addr, bundle_mem, BUNDLE_LEN); |
fbfaaae5 JK |
757 | if (val != 0) |
758 | { | |
759 | do_cleanups (cleanup); | |
760 | return val; | |
761 | } | |
126fa72d | 762 | |
73a9714c JB |
763 | /* SHADOW_SLOTNUM saves the original slot number as expected by the caller |
764 | for addressing the SHADOW_CONTENTS placement. */ | |
765 | shadow_slotnum = slotnum; | |
766 | ||
939c61fa | 767 | template = extract_bit_field (bundle_mem, 0, 5); |
73a9714c JB |
768 | if (template_encoding_table[template][slotnum] == X) |
769 | { | |
ca8b5032 JB |
770 | /* X unit types can only be used in slot 2, and are actually |
771 | part of a 2-slot L-X instruction. We refuse to insert | |
772 | breakpoints at this address, so there should be no reason | |
773 | for us attempting to remove one there, except if the program's | |
774 | code somehow got modified in memory. */ | |
73a9714c | 775 | gdb_assert (slotnum == 2); |
ca8b5032 JB |
776 | warning (_("Cannot remove breakpoint at address %s from non-existing " |
777 | "X-type slot, memory has changed underneath"), | |
73a9714c JB |
778 | paddress (gdbarch, bp_tgt->placed_address)); |
779 | do_cleanups (cleanup); | |
780 | return -1; | |
781 | } | |
782 | if (template_encoding_table[template][slotnum] == L) | |
783 | { | |
ca8b5032 JB |
784 | /* L unit types can only be used in slot 1. But the breakpoint |
785 | was actually saved using slot 2, so update the slot number | |
786 | accordingly. */ | |
73a9714c JB |
787 | gdb_assert (slotnum == 1); |
788 | slotnum = 2; | |
789 | } | |
939c61fa | 790 | |
73a9714c | 791 | gdb_assert (bp_tgt->placed_size == BUNDLE_LEN - shadow_slotnum); |
939c61fa JK |
792 | gdb_assert (bp_tgt->placed_size == bp_tgt->shadow_len); |
793 | ||
794 | instr_breakpoint = slotN_contents (bundle_mem, slotnum); | |
795 | if (instr_breakpoint != IA64_BREAKPOINT) | |
126fa72d | 796 | { |
939c61fa JK |
797 | warning (_("Cannot remove breakpoint at address %s, " |
798 | "no break instruction at such address."), | |
5af949e3 | 799 | paddress (gdbarch, bp_tgt->placed_address)); |
a58162c2 | 800 | do_cleanups (cleanup); |
939c61fa | 801 | return -1; |
126fa72d PS |
802 | } |
803 | ||
939c61fa JK |
804 | /* Extract the original saved instruction from SLOTNUM normalizing its |
805 | bit-shift for INSTR_SAVED. */ | |
806 | memcpy (bundle_saved, bundle_mem, BUNDLE_LEN); | |
73a9714c JB |
807 | memcpy (bundle_saved + shadow_slotnum, bp_tgt->shadow_contents, |
808 | bp_tgt->shadow_len); | |
939c61fa JK |
809 | instr_saved = slotN_contents (bundle_saved, slotnum); |
810 | ||
ca8b5032 JB |
811 | /* In BUNDLE_MEM, be careful to modify only the bits belonging to SLOTNUM |
812 | and not any of the other ones that are stored in SHADOW_CONTENTS. */ | |
939c61fa | 813 | replace_slotN_contents (bundle_mem, instr_saved, slotnum); |
fbfaaae5 | 814 | val = target_write_memory (addr, bundle_mem, BUNDLE_LEN); |
16461d7d | 815 | |
1de34ab7 | 816 | do_cleanups (cleanup); |
16461d7d KB |
817 | return val; |
818 | } | |
819 | ||
939c61fa JK |
820 | /* As gdbarch_breakpoint_from_pc ranges have byte granularity and ia64 |
821 | instruction slots ranges are bit-granular (41 bits) we have to provide an | |
822 | extended range as described for ia64_memory_insert_breakpoint. We also take | |
823 | care of preserving the `break' instruction 21-bit (or 62-bit) parameter to | |
824 | make a match for permanent breakpoints. */ | |
825 | ||
826 | static const gdb_byte * | |
1777feb0 MS |
827 | ia64_breakpoint_from_pc (struct gdbarch *gdbarch, |
828 | CORE_ADDR *pcptr, int *lenptr) | |
16461d7d | 829 | { |
939c61fa JK |
830 | CORE_ADDR addr = *pcptr; |
831 | static gdb_byte bundle[BUNDLE_LEN]; | |
73a9714c | 832 | int slotnum = (int) (*pcptr & 0x0f) / SLOT_MULTIPLIER, shadow_slotnum; |
939c61fa JK |
833 | long long instr_fetched; |
834 | int val; | |
835 | int template; | |
836 | struct cleanup *cleanup; | |
837 | ||
838 | if (slotnum > 2) | |
839 | error (_("Can't insert breakpoint for slot numbers greater than 2.")); | |
840 | ||
841 | addr &= ~0x0f; | |
842 | ||
843 | /* Enable the automatic memory restoration from breakpoints while | |
844 | we read our instruction bundle to match bp_loc_is_permanent. */ | |
845 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
846 | val = target_read_memory (addr, bundle, BUNDLE_LEN); | |
847 | do_cleanups (cleanup); | |
848 | ||
849 | /* The memory might be unreachable. This can happen, for instance, | |
850 | when the user inserts a breakpoint at an invalid address. */ | |
851 | if (val != 0) | |
852 | return NULL; | |
853 | ||
73a9714c JB |
854 | /* SHADOW_SLOTNUM saves the original slot number as expected by the caller |
855 | for addressing the SHADOW_CONTENTS placement. */ | |
856 | shadow_slotnum = slotnum; | |
857 | ||
858 | /* Cover always the last byte of the bundle for the L-X slot case. */ | |
859 | *lenptr = BUNDLE_LEN - shadow_slotnum; | |
860 | ||
939c61fa JK |
861 | /* Check for L type instruction in slot 1, if present then bump up the slot |
862 | number to the slot 2. */ | |
863 | template = extract_bit_field (bundle, 0, 5); | |
73a9714c JB |
864 | if (template_encoding_table[template][slotnum] == X) |
865 | { | |
866 | gdb_assert (slotnum == 2); | |
867 | error (_("Can't insert breakpoint for non-existing slot X")); | |
868 | } | |
869 | if (template_encoding_table[template][slotnum] == L) | |
870 | { | |
871 | gdb_assert (slotnum == 1); | |
872 | slotnum = 2; | |
873 | } | |
939c61fa JK |
874 | |
875 | /* A break instruction has its all its opcode bits cleared except for | |
876 | the parameter value. For L+X slot pair we are at the X slot (slot 2) so | |
877 | we should not touch the L slot - the upper 41 bits of the parameter. */ | |
878 | instr_fetched = slotN_contents (bundle, slotnum); | |
116e0965 | 879 | instr_fetched &= 0x1003ffffc0LL; |
939c61fa JK |
880 | replace_slotN_contents (bundle, instr_fetched, slotnum); |
881 | ||
73a9714c | 882 | return bundle + shadow_slotnum; |
16461d7d KB |
883 | } |
884 | ||
a78f21af | 885 | static CORE_ADDR |
61a1198a | 886 | ia64_read_pc (struct regcache *regcache) |
16461d7d | 887 | { |
61a1198a UW |
888 | ULONGEST psr_value, pc_value; |
889 | int slot_num; | |
890 | ||
891 | regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value); | |
892 | regcache_cooked_read_unsigned (regcache, IA64_IP_REGNUM, &pc_value); | |
893 | slot_num = (psr_value >> 41) & 3; | |
16461d7d KB |
894 | |
895 | return pc_value | (slot_num * SLOT_MULTIPLIER); | |
896 | } | |
897 | ||
54a5c8d8 | 898 | void |
61a1198a | 899 | ia64_write_pc (struct regcache *regcache, CORE_ADDR new_pc) |
16461d7d KB |
900 | { |
901 | int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER; | |
61a1198a UW |
902 | ULONGEST psr_value; |
903 | ||
904 | regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value); | |
16461d7d | 905 | psr_value &= ~(3LL << 41); |
61a1198a | 906 | psr_value |= (ULONGEST)(slot_num & 0x3) << 41; |
16461d7d KB |
907 | |
908 | new_pc &= ~0xfLL; | |
909 | ||
61a1198a UW |
910 | regcache_cooked_write_unsigned (regcache, IA64_PSR_REGNUM, psr_value); |
911 | regcache_cooked_write_unsigned (regcache, IA64_IP_REGNUM, new_pc); | |
16461d7d KB |
912 | } |
913 | ||
914 | #define IS_NaT_COLLECTION_ADDR(addr) ((((addr) >> 3) & 0x3f) == 0x3f) | |
915 | ||
916 | /* Returns the address of the slot that's NSLOTS slots away from | |
1777feb0 | 917 | the address ADDR. NSLOTS may be positive or negative. */ |
16461d7d KB |
918 | static CORE_ADDR |
919 | rse_address_add(CORE_ADDR addr, int nslots) | |
920 | { | |
921 | CORE_ADDR new_addr; | |
922 | int mandatory_nat_slots = nslots / 63; | |
923 | int direction = nslots < 0 ? -1 : 1; | |
924 | ||
925 | new_addr = addr + 8 * (nslots + mandatory_nat_slots); | |
926 | ||
927 | if ((new_addr >> 9) != ((addr + 8 * 64 * mandatory_nat_slots) >> 9)) | |
928 | new_addr += 8 * direction; | |
929 | ||
930 | if (IS_NaT_COLLECTION_ADDR(new_addr)) | |
931 | new_addr += 8 * direction; | |
932 | ||
933 | return new_addr; | |
934 | } | |
935 | ||
05d1431c | 936 | static enum register_status |
004d836a | 937 | ia64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, |
88d82102 | 938 | int regnum, gdb_byte *buf) |
16461d7d | 939 | { |
e17a4113 | 940 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
05d1431c | 941 | enum register_status status; |
e17a4113 | 942 | |
004d836a | 943 | if (regnum >= V32_REGNUM && regnum <= V127_REGNUM) |
244bc108 | 944 | { |
88d82102 | 945 | #ifdef HAVE_LIBUNWIND_IA64_H |
1777feb0 MS |
946 | /* First try and use the libunwind special reg accessor, |
947 | otherwise fallback to standard logic. */ | |
c5a27d9c | 948 | if (!libunwind_is_initialized () |
45ecac4b | 949 | || libunwind_get_reg_special (gdbarch, regcache, regnum, buf) != 0) |
88d82102 | 950 | #endif |
004d836a | 951 | { |
1777feb0 MS |
952 | /* The fallback position is to assume that r32-r127 are |
953 | found sequentially in memory starting at $bof. This | |
954 | isn't always true, but without libunwind, this is the | |
955 | best we can do. */ | |
05d1431c | 956 | enum register_status status; |
c5a27d9c JJ |
957 | ULONGEST cfm; |
958 | ULONGEST bsp; | |
959 | CORE_ADDR reg; | |
05d1431c PA |
960 | |
961 | status = regcache_cooked_read_unsigned (regcache, | |
962 | IA64_BSP_REGNUM, &bsp); | |
963 | if (status != REG_VALID) | |
964 | return status; | |
965 | ||
966 | status = regcache_cooked_read_unsigned (regcache, | |
967 | IA64_CFM_REGNUM, &cfm); | |
968 | if (status != REG_VALID) | |
969 | return status; | |
970 | ||
c5a27d9c | 971 | /* The bsp points at the end of the register frame so we |
1777feb0 MS |
972 | subtract the size of frame from it to get start of |
973 | register frame. */ | |
c5a27d9c JJ |
974 | bsp = rse_address_add (bsp, -(cfm & 0x7f)); |
975 | ||
976 | if ((cfm & 0x7f) > regnum - V32_REGNUM) | |
977 | { | |
978 | ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM)); | |
e17a4113 UW |
979 | reg = read_memory_integer ((CORE_ADDR)reg_addr, 8, byte_order); |
980 | store_unsigned_integer (buf, register_size (gdbarch, regnum), | |
981 | byte_order, reg); | |
c5a27d9c JJ |
982 | } |
983 | else | |
e17a4113 UW |
984 | store_unsigned_integer (buf, register_size (gdbarch, regnum), |
985 | byte_order, 0); | |
004d836a | 986 | } |
004d836a JJ |
987 | } |
988 | else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM) | |
989 | { | |
990 | ULONGEST unatN_val; | |
991 | ULONGEST unat; | |
05d1431c PA |
992 | status = regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat); |
993 | if (status != REG_VALID) | |
994 | return status; | |
004d836a | 995 | unatN_val = (unat & (1LL << (regnum - IA64_NAT0_REGNUM))) != 0; |
e17a4113 UW |
996 | store_unsigned_integer (buf, register_size (gdbarch, regnum), |
997 | byte_order, unatN_val); | |
004d836a JJ |
998 | } |
999 | else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM) | |
1000 | { | |
1001 | ULONGEST natN_val = 0; | |
1002 | ULONGEST bsp; | |
1003 | ULONGEST cfm; | |
1004 | CORE_ADDR gr_addr = 0; | |
05d1431c PA |
1005 | status = regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp); |
1006 | if (status != REG_VALID) | |
1007 | return status; | |
1008 | status = regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1009 | if (status != REG_VALID) | |
1010 | return status; | |
004d836a JJ |
1011 | |
1012 | /* The bsp points at the end of the register frame so we | |
1013 | subtract the size of frame from it to get start of register frame. */ | |
1014 | bsp = rse_address_add (bsp, -(cfm & 0x7f)); | |
1015 | ||
1016 | if ((cfm & 0x7f) > regnum - V32_REGNUM) | |
1017 | gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM)); | |
1018 | ||
1019 | if (gr_addr != 0) | |
1020 | { | |
1021 | /* Compute address of nat collection bits. */ | |
1022 | CORE_ADDR nat_addr = gr_addr | 0x1f8; | |
1023 | CORE_ADDR nat_collection; | |
1024 | int nat_bit; | |
1025 | /* If our nat collection address is bigger than bsp, we have to get | |
1026 | the nat collection from rnat. Otherwise, we fetch the nat | |
1027 | collection from the computed address. */ | |
1028 | if (nat_addr >= bsp) | |
1777feb0 MS |
1029 | regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, |
1030 | &nat_collection); | |
004d836a | 1031 | else |
e17a4113 | 1032 | nat_collection = read_memory_integer (nat_addr, 8, byte_order); |
004d836a JJ |
1033 | nat_bit = (gr_addr >> 3) & 0x3f; |
1034 | natN_val = (nat_collection >> nat_bit) & 1; | |
1035 | } | |
1036 | ||
e17a4113 UW |
1037 | store_unsigned_integer (buf, register_size (gdbarch, regnum), |
1038 | byte_order, natN_val); | |
244bc108 | 1039 | } |
004d836a JJ |
1040 | else if (regnum == VBOF_REGNUM) |
1041 | { | |
1042 | /* A virtual register frame start is provided for user convenience. | |
1777feb0 | 1043 | It can be calculated as the bsp - sof (sizeof frame). */ |
004d836a JJ |
1044 | ULONGEST bsp, vbsp; |
1045 | ULONGEST cfm; | |
1046 | CORE_ADDR reg; | |
05d1431c PA |
1047 | status = regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp); |
1048 | if (status != REG_VALID) | |
1049 | return status; | |
1050 | status = regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1051 | if (status != REG_VALID) | |
1052 | return status; | |
004d836a JJ |
1053 | |
1054 | /* The bsp points at the end of the register frame so we | |
1055 | subtract the size of frame from it to get beginning of frame. */ | |
1056 | vbsp = rse_address_add (bsp, -(cfm & 0x7f)); | |
e17a4113 UW |
1057 | store_unsigned_integer (buf, register_size (gdbarch, regnum), |
1058 | byte_order, vbsp); | |
004d836a JJ |
1059 | } |
1060 | else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
1061 | { | |
1062 | ULONGEST pr; | |
1063 | ULONGEST cfm; | |
1064 | ULONGEST prN_val; | |
1065 | CORE_ADDR reg; | |
05d1431c PA |
1066 | status = regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr); |
1067 | if (status != REG_VALID) | |
1068 | return status; | |
1069 | status = regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1070 | if (status != REG_VALID) | |
1071 | return status; | |
004d836a JJ |
1072 | |
1073 | if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
1074 | { | |
1075 | /* Fetch predicate register rename base from current frame | |
1777feb0 | 1076 | marker for this frame. */ |
004d836a JJ |
1077 | int rrb_pr = (cfm >> 32) & 0x3f; |
1078 | ||
1777feb0 | 1079 | /* Adjust the register number to account for register rotation. */ |
004d836a JJ |
1080 | regnum = VP16_REGNUM |
1081 | + ((regnum - VP16_REGNUM) + rrb_pr) % 48; | |
1082 | } | |
1083 | prN_val = (pr & (1LL << (regnum - VP0_REGNUM))) != 0; | |
e17a4113 UW |
1084 | store_unsigned_integer (buf, register_size (gdbarch, regnum), |
1085 | byte_order, prN_val); | |
004d836a JJ |
1086 | } |
1087 | else | |
088568da | 1088 | memset (buf, 0, register_size (gdbarch, regnum)); |
05d1431c PA |
1089 | |
1090 | return REG_VALID; | |
16461d7d KB |
1091 | } |
1092 | ||
004d836a JJ |
1093 | static void |
1094 | ia64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, | |
88d82102 | 1095 | int regnum, const gdb_byte *buf) |
16461d7d | 1096 | { |
e17a4113 UW |
1097 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1098 | ||
004d836a | 1099 | if (regnum >= V32_REGNUM && regnum <= V127_REGNUM) |
244bc108 | 1100 | { |
004d836a JJ |
1101 | ULONGEST bsp; |
1102 | ULONGEST cfm; | |
1103 | CORE_ADDR reg; | |
1104 | regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp); | |
1105 | regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1106 | ||
1107 | bsp = rse_address_add (bsp, -(cfm & 0x7f)); | |
1108 | ||
1109 | if ((cfm & 0x7f) > regnum - V32_REGNUM) | |
1110 | { | |
1111 | ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM)); | |
1777feb0 | 1112 | write_memory (reg_addr, (void *) buf, 8); |
004d836a JJ |
1113 | } |
1114 | } | |
1115 | else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM) | |
1116 | { | |
1117 | ULONGEST unatN_val, unat, unatN_mask; | |
1118 | regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat); | |
1777feb0 MS |
1119 | unatN_val = extract_unsigned_integer (buf, register_size (gdbarch, |
1120 | regnum), | |
e17a4113 | 1121 | byte_order); |
004d836a JJ |
1122 | unatN_mask = (1LL << (regnum - IA64_NAT0_REGNUM)); |
1123 | if (unatN_val == 0) | |
1124 | unat &= ~unatN_mask; | |
1125 | else if (unatN_val == 1) | |
1126 | unat |= unatN_mask; | |
1127 | regcache_cooked_write_unsigned (regcache, IA64_UNAT_REGNUM, unat); | |
1128 | } | |
1129 | else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM) | |
1130 | { | |
1131 | ULONGEST natN_val; | |
1132 | ULONGEST bsp; | |
1133 | ULONGEST cfm; | |
1134 | CORE_ADDR gr_addr = 0; | |
1135 | regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp); | |
1136 | regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1137 | ||
1138 | /* The bsp points at the end of the register frame so we | |
1139 | subtract the size of frame from it to get start of register frame. */ | |
1140 | bsp = rse_address_add (bsp, -(cfm & 0x7f)); | |
1141 | ||
1142 | if ((cfm & 0x7f) > regnum - V32_REGNUM) | |
1143 | gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM)); | |
1144 | ||
1777feb0 MS |
1145 | natN_val = extract_unsigned_integer (buf, register_size (gdbarch, |
1146 | regnum), | |
e17a4113 | 1147 | byte_order); |
004d836a JJ |
1148 | |
1149 | if (gr_addr != 0 && (natN_val == 0 || natN_val == 1)) | |
1150 | { | |
1151 | /* Compute address of nat collection bits. */ | |
1152 | CORE_ADDR nat_addr = gr_addr | 0x1f8; | |
1153 | CORE_ADDR nat_collection; | |
1154 | int natN_bit = (gr_addr >> 3) & 0x3f; | |
1155 | ULONGEST natN_mask = (1LL << natN_bit); | |
1156 | /* If our nat collection address is bigger than bsp, we have to get | |
1157 | the nat collection from rnat. Otherwise, we fetch the nat | |
1158 | collection from the computed address. */ | |
1159 | if (nat_addr >= bsp) | |
1160 | { | |
05d1431c PA |
1161 | regcache_cooked_read_unsigned (regcache, |
1162 | IA64_RNAT_REGNUM, | |
1777feb0 | 1163 | &nat_collection); |
004d836a JJ |
1164 | if (natN_val) |
1165 | nat_collection |= natN_mask; | |
1166 | else | |
1167 | nat_collection &= ~natN_mask; | |
1777feb0 MS |
1168 | regcache_cooked_write_unsigned (regcache, IA64_RNAT_REGNUM, |
1169 | nat_collection); | |
004d836a JJ |
1170 | } |
1171 | else | |
1172 | { | |
1173 | char nat_buf[8]; | |
e17a4113 | 1174 | nat_collection = read_memory_integer (nat_addr, 8, byte_order); |
004d836a JJ |
1175 | if (natN_val) |
1176 | nat_collection |= natN_mask; | |
1177 | else | |
1178 | nat_collection &= ~natN_mask; | |
e17a4113 UW |
1179 | store_unsigned_integer (nat_buf, register_size (gdbarch, regnum), |
1180 | byte_order, nat_collection); | |
004d836a JJ |
1181 | write_memory (nat_addr, nat_buf, 8); |
1182 | } | |
1183 | } | |
1184 | } | |
1185 | else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
1186 | { | |
1187 | ULONGEST pr; | |
1188 | ULONGEST cfm; | |
1189 | ULONGEST prN_val; | |
1190 | ULONGEST prN_mask; | |
1191 | ||
1192 | regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr); | |
1193 | regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
1194 | ||
1195 | if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
1196 | { | |
1197 | /* Fetch predicate register rename base from current frame | |
1777feb0 | 1198 | marker for this frame. */ |
004d836a JJ |
1199 | int rrb_pr = (cfm >> 32) & 0x3f; |
1200 | ||
1777feb0 | 1201 | /* Adjust the register number to account for register rotation. */ |
004d836a JJ |
1202 | regnum = VP16_REGNUM |
1203 | + ((regnum - VP16_REGNUM) + rrb_pr) % 48; | |
1204 | } | |
e17a4113 UW |
1205 | prN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum), |
1206 | byte_order); | |
004d836a JJ |
1207 | prN_mask = (1LL << (regnum - VP0_REGNUM)); |
1208 | if (prN_val == 0) | |
1209 | pr &= ~prN_mask; | |
1210 | else if (prN_val == 1) | |
1211 | pr |= prN_mask; | |
1212 | regcache_cooked_write_unsigned (regcache, IA64_PR_REGNUM, pr); | |
244bc108 | 1213 | } |
16461d7d KB |
1214 | } |
1215 | ||
004d836a JJ |
1216 | /* The ia64 needs to convert between various ieee floating-point formats |
1217 | and the special ia64 floating point register format. */ | |
1218 | ||
1219 | static int | |
0abe36f5 | 1220 | ia64_convert_register_p (struct gdbarch *gdbarch, int regno, struct type *type) |
004d836a | 1221 | { |
83acabca | 1222 | return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM |
27067745 | 1223 | && type != ia64_ext_type (gdbarch)); |
004d836a JJ |
1224 | } |
1225 | ||
8dccd430 | 1226 | static int |
004d836a | 1227 | ia64_register_to_value (struct frame_info *frame, int regnum, |
8dccd430 PA |
1228 | struct type *valtype, gdb_byte *out, |
1229 | int *optimizedp, int *unavailablep) | |
004d836a | 1230 | { |
27067745 | 1231 | struct gdbarch *gdbarch = get_frame_arch (frame); |
004d836a | 1232 | char in[MAX_REGISTER_SIZE]; |
8dccd430 PA |
1233 | |
1234 | /* Convert to TYPE. */ | |
1235 | if (!get_frame_register_bytes (frame, regnum, 0, | |
1236 | register_size (gdbarch, regnum), | |
1237 | in, optimizedp, unavailablep)) | |
1238 | return 0; | |
1239 | ||
27067745 | 1240 | convert_typed_floating (in, ia64_ext_type (gdbarch), out, valtype); |
8dccd430 PA |
1241 | *optimizedp = *unavailablep = 0; |
1242 | return 1; | |
004d836a JJ |
1243 | } |
1244 | ||
1245 | static void | |
1246 | ia64_value_to_register (struct frame_info *frame, int regnum, | |
88d82102 | 1247 | struct type *valtype, const gdb_byte *in) |
004d836a | 1248 | { |
27067745 | 1249 | struct gdbarch *gdbarch = get_frame_arch (frame); |
004d836a | 1250 | char out[MAX_REGISTER_SIZE]; |
27067745 | 1251 | convert_typed_floating (in, valtype, out, ia64_ext_type (gdbarch)); |
004d836a JJ |
1252 | put_frame_register (frame, regnum, out); |
1253 | } | |
1254 | ||
1255 | ||
58ab00f9 KB |
1256 | /* Limit the number of skipped non-prologue instructions since examining |
1257 | of the prologue is expensive. */ | |
5ea2bd7f | 1258 | static int max_skip_non_prologue_insns = 40; |
58ab00f9 KB |
1259 | |
1260 | /* Given PC representing the starting address of a function, and | |
1261 | LIM_PC which is the (sloppy) limit to which to scan when looking | |
1262 | for a prologue, attempt to further refine this limit by using | |
1263 | the line data in the symbol table. If successful, a better guess | |
1264 | on where the prologue ends is returned, otherwise the previous | |
1265 | value of lim_pc is returned. TRUST_LIMIT is a pointer to a flag | |
1266 | which will be set to indicate whether the returned limit may be | |
1267 | used with no further scanning in the event that the function is | |
1268 | frameless. */ | |
1269 | ||
634aa483 AC |
1270 | /* FIXME: cagney/2004-02-14: This function and logic have largely been |
1271 | superseded by skip_prologue_using_sal. */ | |
1272 | ||
58ab00f9 KB |
1273 | static CORE_ADDR |
1274 | refine_prologue_limit (CORE_ADDR pc, CORE_ADDR lim_pc, int *trust_limit) | |
1275 | { | |
1276 | struct symtab_and_line prologue_sal; | |
1277 | CORE_ADDR start_pc = pc; | |
39312971 JB |
1278 | CORE_ADDR end_pc; |
1279 | ||
1280 | /* The prologue can not possibly go past the function end itself, | |
1281 | so we can already adjust LIM_PC accordingly. */ | |
1282 | if (find_pc_partial_function (pc, NULL, NULL, &end_pc) && end_pc < lim_pc) | |
1283 | lim_pc = end_pc; | |
58ab00f9 KB |
1284 | |
1285 | /* Start off not trusting the limit. */ | |
1286 | *trust_limit = 0; | |
1287 | ||
1288 | prologue_sal = find_pc_line (pc, 0); | |
1289 | if (prologue_sal.line != 0) | |
1290 | { | |
1291 | int i; | |
1292 | CORE_ADDR addr = prologue_sal.end; | |
1293 | ||
1294 | /* Handle the case in which compiler's optimizer/scheduler | |
1295 | has moved instructions into the prologue. We scan ahead | |
1296 | in the function looking for address ranges whose corresponding | |
1297 | line number is less than or equal to the first one that we | |
1298 | found for the function. (It can be less than when the | |
1299 | scheduler puts a body instruction before the first prologue | |
1300 | instruction.) */ | |
1301 | for (i = 2 * max_skip_non_prologue_insns; | |
1302 | i > 0 && (lim_pc == 0 || addr < lim_pc); | |
1303 | i--) | |
1304 | { | |
1305 | struct symtab_and_line sal; | |
1306 | ||
1307 | sal = find_pc_line (addr, 0); | |
1308 | if (sal.line == 0) | |
1309 | break; | |
1310 | if (sal.line <= prologue_sal.line | |
1311 | && sal.symtab == prologue_sal.symtab) | |
1312 | { | |
1313 | prologue_sal = sal; | |
1314 | } | |
1315 | addr = sal.end; | |
1316 | } | |
1317 | ||
1318 | if (lim_pc == 0 || prologue_sal.end < lim_pc) | |
1319 | { | |
1320 | lim_pc = prologue_sal.end; | |
1321 | if (start_pc == get_pc_function_start (lim_pc)) | |
1322 | *trust_limit = 1; | |
1323 | } | |
1324 | } | |
1325 | return lim_pc; | |
1326 | } | |
1327 | ||
16461d7d KB |
1328 | #define isScratch(_regnum_) ((_regnum_) == 2 || (_regnum_) == 3 \ |
1329 | || (8 <= (_regnum_) && (_regnum_) <= 11) \ | |
1330 | || (14 <= (_regnum_) && (_regnum_) <= 31)) | |
1331 | #define imm9(_instr_) \ | |
1332 | ( ((((_instr_) & 0x01000000000LL) ? -1 : 0) << 8) \ | |
1333 | | (((_instr_) & 0x00008000000LL) >> 20) \ | |
1334 | | (((_instr_) & 0x00000001fc0LL) >> 6)) | |
1335 | ||
004d836a JJ |
1336 | /* Allocate and initialize a frame cache. */ |
1337 | ||
1338 | static struct ia64_frame_cache * | |
1339 | ia64_alloc_frame_cache (void) | |
1340 | { | |
1341 | struct ia64_frame_cache *cache; | |
1342 | int i; | |
1343 | ||
1344 | cache = FRAME_OBSTACK_ZALLOC (struct ia64_frame_cache); | |
1345 | ||
1346 | /* Base address. */ | |
1347 | cache->base = 0; | |
1348 | cache->pc = 0; | |
1349 | cache->cfm = 0; | |
4afcc598 | 1350 | cache->prev_cfm = 0; |
004d836a JJ |
1351 | cache->sof = 0; |
1352 | cache->sol = 0; | |
1353 | cache->sor = 0; | |
1354 | cache->bsp = 0; | |
1355 | cache->fp_reg = 0; | |
1356 | cache->frameless = 1; | |
1357 | ||
1358 | for (i = 0; i < NUM_IA64_RAW_REGS; i++) | |
1359 | cache->saved_regs[i] = 0; | |
1360 | ||
1361 | return cache; | |
1362 | } | |
1363 | ||
16461d7d | 1364 | static CORE_ADDR |
15c1e57f JB |
1365 | examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, |
1366 | struct frame_info *this_frame, | |
1367 | struct ia64_frame_cache *cache) | |
16461d7d KB |
1368 | { |
1369 | CORE_ADDR next_pc; | |
1370 | CORE_ADDR last_prologue_pc = pc; | |
16461d7d KB |
1371 | instruction_type it; |
1372 | long long instr; | |
16461d7d KB |
1373 | int cfm_reg = 0; |
1374 | int ret_reg = 0; | |
1375 | int fp_reg = 0; | |
1376 | int unat_save_reg = 0; | |
1377 | int pr_save_reg = 0; | |
1378 | int mem_stack_frame_size = 0; | |
1379 | int spill_reg = 0; | |
1380 | CORE_ADDR spill_addr = 0; | |
0927a22b KB |
1381 | char instores[8]; |
1382 | char infpstores[8]; | |
5ea2bd7f | 1383 | char reg_contents[256]; |
58ab00f9 | 1384 | int trust_limit; |
004d836a JJ |
1385 | int frameless = 1; |
1386 | int i; | |
1387 | CORE_ADDR addr; | |
1388 | char buf[8]; | |
1389 | CORE_ADDR bof, sor, sol, sof, cfm, rrb_gr; | |
0927a22b KB |
1390 | |
1391 | memset (instores, 0, sizeof instores); | |
1392 | memset (infpstores, 0, sizeof infpstores); | |
5ea2bd7f | 1393 | memset (reg_contents, 0, sizeof reg_contents); |
16461d7d | 1394 | |
004d836a JJ |
1395 | if (cache->after_prologue != 0 |
1396 | && cache->after_prologue <= lim_pc) | |
1397 | return cache->after_prologue; | |
16461d7d | 1398 | |
58ab00f9 | 1399 | lim_pc = refine_prologue_limit (pc, lim_pc, &trust_limit); |
16461d7d | 1400 | next_pc = fetch_instruction (pc, &it, &instr); |
5ea2bd7f JJ |
1401 | |
1402 | /* We want to check if we have a recognizable function start before we | |
1403 | look ahead for a prologue. */ | |
16461d7d KB |
1404 | if (pc < lim_pc && next_pc |
1405 | && it == M && ((instr & 0x1ee0000003fLL) == 0x02c00000000LL)) | |
1406 | { | |
5ea2bd7f | 1407 | /* alloc - start of a regular function. */ |
16461d7d KB |
1408 | int sor = (int) ((instr & 0x00078000000LL) >> 27); |
1409 | int sol = (int) ((instr & 0x00007f00000LL) >> 20); | |
1410 | int sof = (int) ((instr & 0x000000fe000LL) >> 13); | |
16461d7d | 1411 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); |
004d836a JJ |
1412 | |
1413 | /* Verify that the current cfm matches what we think is the | |
1414 | function start. If we have somehow jumped within a function, | |
1415 | we do not want to interpret the prologue and calculate the | |
1777feb0 MS |
1416 | addresses of various registers such as the return address. |
1417 | We will instead treat the frame as frameless. */ | |
15c1e57f | 1418 | if (!this_frame || |
004d836a JJ |
1419 | (sof == (cache->cfm & 0x7f) && |
1420 | sol == ((cache->cfm >> 7) & 0x7f))) | |
1421 | frameless = 0; | |
1422 | ||
16461d7d KB |
1423 | cfm_reg = rN; |
1424 | last_prologue_pc = next_pc; | |
1425 | pc = next_pc; | |
1426 | } | |
1427 | else | |
58ab00f9 | 1428 | { |
5ea2bd7f JJ |
1429 | /* Look for a leaf routine. */ |
1430 | if (pc < lim_pc && next_pc | |
1431 | && (it == I || it == M) | |
1432 | && ((instr & 0x1ee00000000LL) == 0x10800000000LL)) | |
1433 | { | |
1434 | /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */ | |
1435 | int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13) | |
1436 | | ((instr & 0x001f8000000LL) >> 20) | |
1437 | | ((instr & 0x000000fe000LL) >> 13)); | |
1438 | int rM = (int) ((instr & 0x00007f00000LL) >> 20); | |
1439 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); | |
1440 | int qp = (int) (instr & 0x0000000003fLL); | |
1441 | if (qp == 0 && rN == 2 && imm == 0 && rM == 12 && fp_reg == 0) | |
1442 | { | |
1777feb0 | 1443 | /* mov r2, r12 - beginning of leaf routine. */ |
5ea2bd7f | 1444 | fp_reg = rN; |
5ea2bd7f JJ |
1445 | last_prologue_pc = next_pc; |
1446 | } | |
1447 | } | |
1448 | ||
1449 | /* If we don't recognize a regular function or leaf routine, we are | |
1450 | done. */ | |
1451 | if (!fp_reg) | |
1452 | { | |
1453 | pc = lim_pc; | |
1454 | if (trust_limit) | |
1455 | last_prologue_pc = lim_pc; | |
1456 | } | |
58ab00f9 | 1457 | } |
16461d7d KB |
1458 | |
1459 | /* Loop, looking for prologue instructions, keeping track of | |
1777feb0 | 1460 | where preserved registers were spilled. */ |
16461d7d KB |
1461 | while (pc < lim_pc) |
1462 | { | |
1463 | next_pc = fetch_instruction (pc, &it, &instr); | |
1464 | if (next_pc == 0) | |
1465 | break; | |
1466 | ||
594706e6 | 1467 | if (it == B && ((instr & 0x1e1f800003fLL) != 0x04000000000LL)) |
0927a22b | 1468 | { |
1777feb0 | 1469 | /* Exit loop upon hitting a non-nop branch instruction. */ |
102d615a JJ |
1470 | if (trust_limit) |
1471 | lim_pc = pc; | |
1472 | break; | |
1473 | } | |
1474 | else if (((instr & 0x3fLL) != 0LL) && | |
1475 | (frameless || ret_reg != 0)) | |
1476 | { | |
1477 | /* Exit loop upon hitting a predicated instruction if | |
1478 | we already have the return register or if we are frameless. */ | |
5ea2bd7f JJ |
1479 | if (trust_limit) |
1480 | lim_pc = pc; | |
0927a22b KB |
1481 | break; |
1482 | } | |
1483 | else if (it == I && ((instr & 0x1eff8000000LL) == 0x00188000000LL)) | |
16461d7d KB |
1484 | { |
1485 | /* Move from BR */ | |
1486 | int b2 = (int) ((instr & 0x0000000e000LL) >> 13); | |
1487 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); | |
1488 | int qp = (int) (instr & 0x0000000003f); | |
1489 | ||
1490 | if (qp == 0 && b2 == 0 && rN >= 32 && ret_reg == 0) | |
1491 | { | |
1492 | ret_reg = rN; | |
1493 | last_prologue_pc = next_pc; | |
1494 | } | |
1495 | } | |
1496 | else if ((it == I || it == M) | |
1497 | && ((instr & 0x1ee00000000LL) == 0x10800000000LL)) | |
1498 | { | |
1499 | /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */ | |
1500 | int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13) | |
1501 | | ((instr & 0x001f8000000LL) >> 20) | |
1502 | | ((instr & 0x000000fe000LL) >> 13)); | |
1503 | int rM = (int) ((instr & 0x00007f00000LL) >> 20); | |
1504 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); | |
1505 | int qp = (int) (instr & 0x0000000003fLL); | |
1506 | ||
1507 | if (qp == 0 && rN >= 32 && imm == 0 && rM == 12 && fp_reg == 0) | |
1508 | { | |
1509 | /* mov rN, r12 */ | |
1510 | fp_reg = rN; | |
1511 | last_prologue_pc = next_pc; | |
1512 | } | |
1513 | else if (qp == 0 && rN == 12 && rM == 12) | |
1514 | { | |
1515 | /* adds r12, -mem_stack_frame_size, r12 */ | |
1516 | mem_stack_frame_size -= imm; | |
1517 | last_prologue_pc = next_pc; | |
1518 | } | |
1519 | else if (qp == 0 && rN == 2 | |
1520 | && ((rM == fp_reg && fp_reg != 0) || rM == 12)) | |
1521 | { | |
004d836a JJ |
1522 | char buf[MAX_REGISTER_SIZE]; |
1523 | CORE_ADDR saved_sp = 0; | |
16461d7d KB |
1524 | /* adds r2, spilloffset, rFramePointer |
1525 | or | |
1526 | adds r2, spilloffset, r12 | |
1527 | ||
1528 | Get ready for stf.spill or st8.spill instructions. | |
1777feb0 | 1529 | The address to start spilling at is loaded into r2. |
16461d7d KB |
1530 | FIXME: Why r2? That's what gcc currently uses; it |
1531 | could well be different for other compilers. */ | |
1532 | ||
1777feb0 | 1533 | /* Hmm... whether or not this will work will depend on |
16461d7d KB |
1534 | where the pc is. If it's still early in the prologue |
1535 | this'll be wrong. FIXME */ | |
15c1e57f | 1536 | if (this_frame) |
004d836a | 1537 | { |
e17a4113 UW |
1538 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
1539 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
15c1e57f | 1540 | get_frame_register (this_frame, sp_regnum, buf); |
e17a4113 | 1541 | saved_sp = extract_unsigned_integer (buf, 8, byte_order); |
004d836a JJ |
1542 | } |
1543 | spill_addr = saved_sp | |
16461d7d KB |
1544 | + (rM == 12 ? 0 : mem_stack_frame_size) |
1545 | + imm; | |
1546 | spill_reg = rN; | |
1547 | last_prologue_pc = next_pc; | |
1548 | } | |
b7d038ae | 1549 | else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM-32] && |
5ea2bd7f JJ |
1550 | rN < 256 && imm == 0) |
1551 | { | |
1777feb0 | 1552 | /* mov rN, rM where rM is an input register. */ |
5ea2bd7f JJ |
1553 | reg_contents[rN] = rM; |
1554 | last_prologue_pc = next_pc; | |
1555 | } | |
1556 | else if (frameless && qp == 0 && rN == fp_reg && imm == 0 && | |
1557 | rM == 2) | |
1558 | { | |
1559 | /* mov r12, r2 */ | |
1560 | last_prologue_pc = next_pc; | |
1561 | break; | |
1562 | } | |
16461d7d KB |
1563 | } |
1564 | else if (it == M | |
1565 | && ( ((instr & 0x1efc0000000LL) == 0x0eec0000000LL) | |
1566 | || ((instr & 0x1ffc8000000LL) == 0x0cec0000000LL) )) | |
1567 | { | |
1568 | /* stf.spill [rN] = fM, imm9 | |
1569 | or | |
1570 | stf.spill [rN] = fM */ | |
1571 | ||
1572 | int imm = imm9(instr); | |
1573 | int rN = (int) ((instr & 0x00007f00000LL) >> 20); | |
1574 | int fM = (int) ((instr & 0x000000fe000LL) >> 13); | |
1575 | int qp = (int) (instr & 0x0000000003fLL); | |
1576 | if (qp == 0 && rN == spill_reg && spill_addr != 0 | |
1577 | && ((2 <= fM && fM <= 5) || (16 <= fM && fM <= 31))) | |
1578 | { | |
004d836a | 1579 | cache->saved_regs[IA64_FR0_REGNUM + fM] = spill_addr; |
16461d7d | 1580 | |
594706e6 | 1581 | if ((instr & 0x1efc0000000LL) == 0x0eec0000000LL) |
16461d7d KB |
1582 | spill_addr += imm; |
1583 | else | |
1777feb0 | 1584 | spill_addr = 0; /* last one; must be done. */ |
16461d7d KB |
1585 | last_prologue_pc = next_pc; |
1586 | } | |
1587 | } | |
1588 | else if ((it == M && ((instr & 0x1eff8000000LL) == 0x02110000000LL)) | |
1589 | || (it == I && ((instr & 0x1eff8000000LL) == 0x00050000000LL)) ) | |
1590 | { | |
1591 | /* mov.m rN = arM | |
1592 | or | |
1593 | mov.i rN = arM */ | |
1594 | ||
1595 | int arM = (int) ((instr & 0x00007f00000LL) >> 20); | |
1596 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); | |
1597 | int qp = (int) (instr & 0x0000000003fLL); | |
1598 | if (qp == 0 && isScratch (rN) && arM == 36 /* ar.unat */) | |
1599 | { | |
1600 | /* We have something like "mov.m r3 = ar.unat". Remember the | |
1777feb0 | 1601 | r3 (or whatever) and watch for a store of this register... */ |
16461d7d KB |
1602 | unat_save_reg = rN; |
1603 | last_prologue_pc = next_pc; | |
1604 | } | |
1605 | } | |
1606 | else if (it == I && ((instr & 0x1eff8000000LL) == 0x00198000000LL)) | |
1607 | { | |
1608 | /* mov rN = pr */ | |
1609 | int rN = (int) ((instr & 0x00000001fc0LL) >> 6); | |
1610 | int qp = (int) (instr & 0x0000000003fLL); | |
1611 | if (qp == 0 && isScratch (rN)) | |
1612 | { | |
1613 | pr_save_reg = rN; | |
1614 | last_prologue_pc = next_pc; | |
1615 | } | |
1616 | } | |
1617 | else if (it == M | |
1618 | && ( ((instr & 0x1ffc8000000LL) == 0x08cc0000000LL) | |
1619 | || ((instr & 0x1efc0000000LL) == 0x0acc0000000LL))) | |
1620 | { | |
1621 | /* st8 [rN] = rM | |
1622 | or | |
1623 | st8 [rN] = rM, imm9 */ | |
1624 | int rN = (int) ((instr & 0x00007f00000LL) >> 20); | |
1625 | int rM = (int) ((instr & 0x000000fe000LL) >> 13); | |
1626 | int qp = (int) (instr & 0x0000000003fLL); | |
5ea2bd7f | 1627 | int indirect = rM < 256 ? reg_contents[rM] : 0; |
16461d7d KB |
1628 | if (qp == 0 && rN == spill_reg && spill_addr != 0 |
1629 | && (rM == unat_save_reg || rM == pr_save_reg)) | |
1630 | { | |
1631 | /* We've found a spill of either the UNAT register or the PR | |
1632 | register. (Well, not exactly; what we've actually found is | |
1633 | a spill of the register that UNAT or PR was moved to). | |
1777feb0 | 1634 | Record that fact and move on... */ |
16461d7d KB |
1635 | if (rM == unat_save_reg) |
1636 | { | |
1777feb0 | 1637 | /* Track UNAT register. */ |
004d836a | 1638 | cache->saved_regs[IA64_UNAT_REGNUM] = spill_addr; |
16461d7d KB |
1639 | unat_save_reg = 0; |
1640 | } | |
1641 | else | |
1642 | { | |
1777feb0 | 1643 | /* Track PR register. */ |
004d836a | 1644 | cache->saved_regs[IA64_PR_REGNUM] = spill_addr; |
16461d7d KB |
1645 | pr_save_reg = 0; |
1646 | } | |
1647 | if ((instr & 0x1efc0000000LL) == 0x0acc0000000LL) | |
1648 | /* st8 [rN] = rM, imm9 */ | |
1649 | spill_addr += imm9(instr); | |
1650 | else | |
1777feb0 | 1651 | spill_addr = 0; /* Must be done spilling. */ |
16461d7d KB |
1652 | last_prologue_pc = next_pc; |
1653 | } | |
0927a22b KB |
1654 | else if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32]) |
1655 | { | |
1777feb0 | 1656 | /* Allow up to one store of each input register. */ |
0927a22b KB |
1657 | instores[rM-32] = 1; |
1658 | last_prologue_pc = next_pc; | |
1659 | } | |
5ea2bd7f JJ |
1660 | else if (qp == 0 && 32 <= indirect && indirect < 40 && |
1661 | !instores[indirect-32]) | |
1662 | { | |
1663 | /* Allow an indirect store of an input register. */ | |
1664 | instores[indirect-32] = 1; | |
1665 | last_prologue_pc = next_pc; | |
1666 | } | |
0927a22b KB |
1667 | } |
1668 | else if (it == M && ((instr & 0x1ff08000000LL) == 0x08c00000000LL)) | |
1669 | { | |
1670 | /* One of | |
1671 | st1 [rN] = rM | |
1672 | st2 [rN] = rM | |
1673 | st4 [rN] = rM | |
1674 | st8 [rN] = rM | |
1675 | Note that the st8 case is handled in the clause above. | |
1676 | ||
1777feb0 MS |
1677 | Advance over stores of input registers. One store per input |
1678 | register is permitted. */ | |
0927a22b KB |
1679 | int rM = (int) ((instr & 0x000000fe000LL) >> 13); |
1680 | int qp = (int) (instr & 0x0000000003fLL); | |
5ea2bd7f | 1681 | int indirect = rM < 256 ? reg_contents[rM] : 0; |
0927a22b KB |
1682 | if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32]) |
1683 | { | |
1684 | instores[rM-32] = 1; | |
1685 | last_prologue_pc = next_pc; | |
1686 | } | |
5ea2bd7f JJ |
1687 | else if (qp == 0 && 32 <= indirect && indirect < 40 && |
1688 | !instores[indirect-32]) | |
1689 | { | |
1690 | /* Allow an indirect store of an input register. */ | |
1691 | instores[indirect-32] = 1; | |
1692 | last_prologue_pc = next_pc; | |
1693 | } | |
0927a22b KB |
1694 | } |
1695 | else if (it == M && ((instr & 0x1ff88000000LL) == 0x0cc80000000LL)) | |
1696 | { | |
1697 | /* Either | |
1698 | stfs [rN] = fM | |
1699 | or | |
1700 | stfd [rN] = fM | |
1701 | ||
1702 | Advance over stores of floating point input registers. Again | |
1777feb0 | 1703 | one store per register is permitted. */ |
0927a22b KB |
1704 | int fM = (int) ((instr & 0x000000fe000LL) >> 13); |
1705 | int qp = (int) (instr & 0x0000000003fLL); | |
1706 | if (qp == 0 && 8 <= fM && fM < 16 && !infpstores[fM - 8]) | |
1707 | { | |
1708 | infpstores[fM-8] = 1; | |
1709 | last_prologue_pc = next_pc; | |
1710 | } | |
16461d7d KB |
1711 | } |
1712 | else if (it == M | |
1713 | && ( ((instr & 0x1ffc8000000LL) == 0x08ec0000000LL) | |
1714 | || ((instr & 0x1efc0000000LL) == 0x0aec0000000LL))) | |
1715 | { | |
1716 | /* st8.spill [rN] = rM | |
1717 | or | |
1718 | st8.spill [rN] = rM, imm9 */ | |
1719 | int rN = (int) ((instr & 0x00007f00000LL) >> 20); | |
1720 | int rM = (int) ((instr & 0x000000fe000LL) >> 13); | |
1721 | int qp = (int) (instr & 0x0000000003fLL); | |
1722 | if (qp == 0 && rN == spill_reg && 4 <= rM && rM <= 7) | |
1723 | { | |
1724 | /* We've found a spill of one of the preserved general purpose | |
1725 | regs. Record the spill address and advance the spill | |
1777feb0 | 1726 | register if appropriate. */ |
004d836a | 1727 | cache->saved_regs[IA64_GR0_REGNUM + rM] = spill_addr; |
16461d7d KB |
1728 | if ((instr & 0x1efc0000000LL) == 0x0aec0000000LL) |
1729 | /* st8.spill [rN] = rM, imm9 */ | |
1730 | spill_addr += imm9(instr); | |
1731 | else | |
1777feb0 | 1732 | spill_addr = 0; /* Done spilling. */ |
16461d7d KB |
1733 | last_prologue_pc = next_pc; |
1734 | } | |
1735 | } | |
16461d7d KB |
1736 | |
1737 | pc = next_pc; | |
1738 | } | |
1739 | ||
15c1e57f JB |
1740 | /* If not frameless and we aren't called by skip_prologue, then we need |
1741 | to calculate registers for the previous frame which will be needed | |
1742 | later. */ | |
16461d7d | 1743 | |
15c1e57f | 1744 | if (!frameless && this_frame) |
da50a4b7 | 1745 | { |
e17a4113 UW |
1746 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
1747 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1748 | ||
004d836a JJ |
1749 | /* Extract the size of the rotating portion of the stack |
1750 | frame and the register rename base from the current | |
1777feb0 | 1751 | frame marker. */ |
004d836a JJ |
1752 | cfm = cache->cfm; |
1753 | sor = cache->sor; | |
1754 | sof = cache->sof; | |
1755 | sol = cache->sol; | |
1756 | rrb_gr = (cfm >> 18) & 0x7f; | |
1757 | ||
1758 | /* Find the bof (beginning of frame). */ | |
1759 | bof = rse_address_add (cache->bsp, -sof); | |
1760 | ||
1761 | for (i = 0, addr = bof; | |
1762 | i < sof; | |
1763 | i++, addr += 8) | |
1764 | { | |
1765 | if (IS_NaT_COLLECTION_ADDR (addr)) | |
1766 | { | |
1767 | addr += 8; | |
1768 | } | |
1769 | if (i+32 == cfm_reg) | |
1770 | cache->saved_regs[IA64_CFM_REGNUM] = addr; | |
1771 | if (i+32 == ret_reg) | |
1772 | cache->saved_regs[IA64_VRAP_REGNUM] = addr; | |
1773 | if (i+32 == fp_reg) | |
1774 | cache->saved_regs[IA64_VFP_REGNUM] = addr; | |
1775 | } | |
16461d7d | 1776 | |
1777feb0 | 1777 | /* For the previous argument registers we require the previous bof. |
004d836a | 1778 | If we can't find the previous cfm, then we can do nothing. */ |
4afcc598 | 1779 | cfm = 0; |
004d836a JJ |
1780 | if (cache->saved_regs[IA64_CFM_REGNUM] != 0) |
1781 | { | |
e17a4113 UW |
1782 | cfm = read_memory_integer (cache->saved_regs[IA64_CFM_REGNUM], |
1783 | 8, byte_order); | |
4afcc598 JJ |
1784 | } |
1785 | else if (cfm_reg != 0) | |
1786 | { | |
15c1e57f | 1787 | get_frame_register (this_frame, cfm_reg, buf); |
e17a4113 | 1788 | cfm = extract_unsigned_integer (buf, 8, byte_order); |
4afcc598 JJ |
1789 | } |
1790 | cache->prev_cfm = cfm; | |
1791 | ||
1792 | if (cfm != 0) | |
1793 | { | |
004d836a JJ |
1794 | sor = ((cfm >> 14) & 0xf) * 8; |
1795 | sof = (cfm & 0x7f); | |
1796 | sol = (cfm >> 7) & 0x7f; | |
1797 | rrb_gr = (cfm >> 18) & 0x7f; | |
1798 | ||
15c1e57f JB |
1799 | /* The previous bof only requires subtraction of the sol (size of |
1800 | locals) due to the overlap between output and input of | |
1801 | subsequent frames. */ | |
004d836a JJ |
1802 | bof = rse_address_add (bof, -sol); |
1803 | ||
1804 | for (i = 0, addr = bof; | |
1805 | i < sof; | |
1806 | i++, addr += 8) | |
1807 | { | |
1808 | if (IS_NaT_COLLECTION_ADDR (addr)) | |
1809 | { | |
1810 | addr += 8; | |
1811 | } | |
1812 | if (i < sor) | |
1777feb0 MS |
1813 | cache->saved_regs[IA64_GR32_REGNUM |
1814 | + ((i + (sor - rrb_gr)) % sor)] | |
004d836a JJ |
1815 | = addr; |
1816 | else | |
1817 | cache->saved_regs[IA64_GR32_REGNUM + i] = addr; | |
1818 | } | |
1819 | ||
1820 | } | |
1821 | } | |
1822 | ||
5ea2bd7f JJ |
1823 | /* Try and trust the lim_pc value whenever possible. */ |
1824 | if (trust_limit && lim_pc >= last_prologue_pc) | |
004d836a JJ |
1825 | last_prologue_pc = lim_pc; |
1826 | ||
1827 | cache->frameless = frameless; | |
1828 | cache->after_prologue = last_prologue_pc; | |
1829 | cache->mem_stack_frame_size = mem_stack_frame_size; | |
1830 | cache->fp_reg = fp_reg; | |
5ea2bd7f | 1831 | |
16461d7d KB |
1832 | return last_prologue_pc; |
1833 | } | |
1834 | ||
1835 | CORE_ADDR | |
6093d2eb | 1836 | ia64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
16461d7d | 1837 | { |
004d836a JJ |
1838 | struct ia64_frame_cache cache; |
1839 | cache.base = 0; | |
1840 | cache.after_prologue = 0; | |
1841 | cache.cfm = 0; | |
1842 | cache.bsp = 0; | |
1843 | ||
1777feb0 MS |
1844 | /* Call examine_prologue with - as third argument since we don't |
1845 | have a next frame pointer to send. */ | |
004d836a | 1846 | return examine_prologue (pc, pc+1024, 0, &cache); |
16461d7d KB |
1847 | } |
1848 | ||
004d836a JJ |
1849 | |
1850 | /* Normal frames. */ | |
1851 | ||
1852 | static struct ia64_frame_cache * | |
15c1e57f | 1853 | ia64_frame_cache (struct frame_info *this_frame, void **this_cache) |
16461d7d | 1854 | { |
e17a4113 UW |
1855 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
1856 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
004d836a JJ |
1857 | struct ia64_frame_cache *cache; |
1858 | char buf[8]; | |
1859 | CORE_ADDR cfm, sof, sol, bsp, psr; | |
1860 | int i; | |
16461d7d | 1861 | |
004d836a JJ |
1862 | if (*this_cache) |
1863 | return *this_cache; | |
16461d7d | 1864 | |
004d836a JJ |
1865 | cache = ia64_alloc_frame_cache (); |
1866 | *this_cache = cache; | |
16461d7d | 1867 | |
15c1e57f | 1868 | get_frame_register (this_frame, sp_regnum, buf); |
e17a4113 | 1869 | cache->saved_sp = extract_unsigned_integer (buf, 8, byte_order); |
16461d7d | 1870 | |
004d836a JJ |
1871 | /* We always want the bsp to point to the end of frame. |
1872 | This way, we can always get the beginning of frame (bof) | |
1873 | by subtracting frame size. */ | |
15c1e57f | 1874 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 1875 | cache->bsp = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 1876 | |
15c1e57f | 1877 | get_frame_register (this_frame, IA64_PSR_REGNUM, buf); |
e17a4113 | 1878 | psr = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 1879 | |
15c1e57f | 1880 | get_frame_register (this_frame, IA64_CFM_REGNUM, buf); |
e17a4113 | 1881 | cfm = extract_unsigned_integer (buf, 8, byte_order); |
004d836a JJ |
1882 | |
1883 | cache->sof = (cfm & 0x7f); | |
1884 | cache->sol = (cfm >> 7) & 0x7f; | |
1885 | cache->sor = ((cfm >> 14) & 0xf) * 8; | |
1886 | ||
1887 | cache->cfm = cfm; | |
1888 | ||
15c1e57f | 1889 | cache->pc = get_frame_func (this_frame); |
004d836a JJ |
1890 | |
1891 | if (cache->pc != 0) | |
15c1e57f | 1892 | examine_prologue (cache->pc, get_frame_pc (this_frame), this_frame, cache); |
004d836a JJ |
1893 | |
1894 | cache->base = cache->saved_sp + cache->mem_stack_frame_size; | |
1895 | ||
1896 | return cache; | |
16461d7d KB |
1897 | } |
1898 | ||
a78f21af | 1899 | static void |
15c1e57f | 1900 | ia64_frame_this_id (struct frame_info *this_frame, void **this_cache, |
004d836a | 1901 | struct frame_id *this_id) |
16461d7d | 1902 | { |
5af949e3 | 1903 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
004d836a | 1904 | struct ia64_frame_cache *cache = |
15c1e57f | 1905 | ia64_frame_cache (this_frame, this_cache); |
16461d7d | 1906 | |
c5a27d9c | 1907 | /* If outermost frame, mark with null frame id. */ |
005ca36a | 1908 | if (cache->base != 0) |
c5a27d9c | 1909 | (*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp); |
4afcc598 JJ |
1910 | if (gdbarch_debug >= 1) |
1911 | fprintf_unfiltered (gdb_stdlog, | |
1777feb0 MS |
1912 | "regular frame id: code %s, stack %s, " |
1913 | "special %s, this_frame %s\n", | |
5af949e3 UW |
1914 | paddress (gdbarch, this_id->code_addr), |
1915 | paddress (gdbarch, this_id->stack_addr), | |
1916 | paddress (gdbarch, cache->bsp), | |
dfc3cd0e | 1917 | host_address_to_string (this_frame)); |
004d836a | 1918 | } |
244bc108 | 1919 | |
15c1e57f JB |
1920 | static struct value * |
1921 | ia64_frame_prev_register (struct frame_info *this_frame, void **this_cache, | |
1922 | int regnum) | |
004d836a | 1923 | { |
15c1e57f | 1924 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 1925 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
15c1e57f | 1926 | struct ia64_frame_cache *cache = ia64_frame_cache (this_frame, this_cache); |
004d836a JJ |
1927 | char buf[8]; |
1928 | ||
1929 | gdb_assert (regnum >= 0); | |
244bc108 | 1930 | |
004d836a | 1931 | if (!target_has_registers) |
8a3fe4f8 | 1932 | error (_("No registers.")); |
244bc108 | 1933 | |
088568da | 1934 | if (regnum == gdbarch_sp_regnum (gdbarch)) |
15c1e57f JB |
1935 | return frame_unwind_got_constant (this_frame, regnum, cache->base); |
1936 | ||
16461d7d KB |
1937 | else if (regnum == IA64_BSP_REGNUM) |
1938 | { | |
15c1e57f JB |
1939 | struct value *val; |
1940 | CORE_ADDR prev_cfm, bsp, prev_bsp; | |
1941 | ||
1942 | /* We want to calculate the previous bsp as the end of the previous | |
1943 | register stack frame. This corresponds to what the hardware bsp | |
1944 | register will be if we pop the frame back which is why we might | |
1945 | have been called. We know the beginning of the current frame is | |
1946 | cache->bsp - cache->sof. This value in the previous frame points | |
1947 | to the start of the output registers. We can calculate the end of | |
1948 | that frame by adding the size of output: | |
1949 | (sof (size of frame) - sol (size of locals)). */ | |
1950 | val = ia64_frame_prev_register (this_frame, this_cache, IA64_CFM_REGNUM); | |
e17a4113 UW |
1951 | prev_cfm = extract_unsigned_integer (value_contents_all (val), |
1952 | 8, byte_order); | |
004d836a | 1953 | bsp = rse_address_add (cache->bsp, -(cache->sof)); |
15c1e57f JB |
1954 | prev_bsp = |
1955 | rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f)); | |
004d836a | 1956 | |
15c1e57f | 1957 | return frame_unwind_got_constant (this_frame, regnum, prev_bsp); |
004d836a | 1958 | } |
15c1e57f | 1959 | |
004d836a JJ |
1960 | else if (regnum == IA64_CFM_REGNUM) |
1961 | { | |
4afcc598 JJ |
1962 | CORE_ADDR addr = cache->saved_regs[IA64_CFM_REGNUM]; |
1963 | ||
1964 | if (addr != 0) | |
15c1e57f JB |
1965 | return frame_unwind_got_memory (this_frame, regnum, addr); |
1966 | ||
1967 | if (cache->prev_cfm) | |
1968 | return frame_unwind_got_constant (this_frame, regnum, cache->prev_cfm); | |
1969 | ||
1970 | if (cache->frameless) | |
1971 | return frame_unwind_got_register (this_frame, IA64_PFS_REGNUM, | |
1972 | IA64_PFS_REGNUM); | |
1973 | return frame_unwind_got_register (this_frame, regnum, 0); | |
16461d7d | 1974 | } |
15c1e57f | 1975 | |
16461d7d KB |
1976 | else if (regnum == IA64_VFP_REGNUM) |
1977 | { | |
1978 | /* If the function in question uses an automatic register (r32-r127) | |
1979 | for the frame pointer, it'll be found by ia64_find_saved_register() | |
1980 | above. If the function lacks one of these frame pointers, we can | |
004d836a | 1981 | still provide a value since we know the size of the frame. */ |
15c1e57f | 1982 | return frame_unwind_got_constant (this_frame, regnum, cache->base); |
16461d7d | 1983 | } |
15c1e57f | 1984 | |
004d836a | 1985 | else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM) |
16461d7d | 1986 | { |
15c1e57f JB |
1987 | struct value *pr_val; |
1988 | ULONGEST prN; | |
1989 | ||
1990 | pr_val = ia64_frame_prev_register (this_frame, this_cache, | |
1991 | IA64_PR_REGNUM); | |
004d836a | 1992 | if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM) |
3a854e23 KB |
1993 | { |
1994 | /* Fetch predicate register rename base from current frame | |
004d836a JJ |
1995 | marker for this frame. */ |
1996 | int rrb_pr = (cache->cfm >> 32) & 0x3f; | |
3a854e23 | 1997 | |
004d836a | 1998 | /* Adjust the register number to account for register rotation. */ |
15c1e57f | 1999 | regnum = VP16_REGNUM + ((regnum - VP16_REGNUM) + rrb_pr) % 48; |
3a854e23 | 2000 | } |
15c1e57f JB |
2001 | prN = extract_bit_field (value_contents_all (pr_val), |
2002 | regnum - VP0_REGNUM, 1); | |
2003 | return frame_unwind_got_constant (this_frame, regnum, prN); | |
16461d7d | 2004 | } |
15c1e57f | 2005 | |
16461d7d KB |
2006 | else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM) |
2007 | { | |
15c1e57f JB |
2008 | struct value *unat_val; |
2009 | ULONGEST unatN; | |
2010 | unat_val = ia64_frame_prev_register (this_frame, this_cache, | |
2011 | IA64_UNAT_REGNUM); | |
2012 | unatN = extract_bit_field (value_contents_all (unat_val), | |
2013 | regnum - IA64_NAT0_REGNUM, 1); | |
2014 | return frame_unwind_got_constant (this_frame, regnum, unatN); | |
16461d7d | 2015 | } |
15c1e57f | 2016 | |
16461d7d KB |
2017 | else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM) |
2018 | { | |
2019 | int natval = 0; | |
2020 | /* Find address of general register corresponding to nat bit we're | |
004d836a JJ |
2021 | interested in. */ |
2022 | CORE_ADDR gr_addr; | |
244bc108 | 2023 | |
15c1e57f JB |
2024 | gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM + IA64_GR0_REGNUM]; |
2025 | ||
004d836a | 2026 | if (gr_addr != 0) |
244bc108 | 2027 | { |
004d836a | 2028 | /* Compute address of nat collection bits. */ |
16461d7d | 2029 | CORE_ADDR nat_addr = gr_addr | 0x1f8; |
004d836a | 2030 | CORE_ADDR bsp; |
16461d7d KB |
2031 | CORE_ADDR nat_collection; |
2032 | int nat_bit; | |
15c1e57f | 2033 | |
16461d7d KB |
2034 | /* If our nat collection address is bigger than bsp, we have to get |
2035 | the nat collection from rnat. Otherwise, we fetch the nat | |
004d836a | 2036 | collection from the computed address. */ |
15c1e57f | 2037 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 2038 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
16461d7d | 2039 | if (nat_addr >= bsp) |
004d836a | 2040 | { |
15c1e57f | 2041 | get_frame_register (this_frame, IA64_RNAT_REGNUM, buf); |
e17a4113 | 2042 | nat_collection = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 2043 | } |
16461d7d | 2044 | else |
e17a4113 | 2045 | nat_collection = read_memory_integer (nat_addr, 8, byte_order); |
16461d7d KB |
2046 | nat_bit = (gr_addr >> 3) & 0x3f; |
2047 | natval = (nat_collection >> nat_bit) & 1; | |
2048 | } | |
004d836a | 2049 | |
15c1e57f | 2050 | return frame_unwind_got_constant (this_frame, regnum, natval); |
244bc108 | 2051 | } |
15c1e57f | 2052 | |
244bc108 KB |
2053 | else if (regnum == IA64_IP_REGNUM) |
2054 | { | |
004d836a | 2055 | CORE_ADDR pc = 0; |
4afcc598 | 2056 | CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM]; |
004d836a | 2057 | |
4afcc598 | 2058 | if (addr != 0) |
15c1e57f JB |
2059 | { |
2060 | read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM)); | |
e17a4113 | 2061 | pc = extract_unsigned_integer (buf, 8, byte_order); |
15c1e57f | 2062 | } |
4afcc598 | 2063 | else if (cache->frameless) |
004d836a | 2064 | { |
15c1e57f | 2065 | get_frame_register (this_frame, IA64_BR0_REGNUM, buf); |
e17a4113 | 2066 | pc = extract_unsigned_integer (buf, 8, byte_order); |
244bc108 | 2067 | } |
004d836a | 2068 | pc &= ~0xf; |
15c1e57f | 2069 | return frame_unwind_got_constant (this_frame, regnum, pc); |
244bc108 | 2070 | } |
15c1e57f | 2071 | |
004d836a | 2072 | else if (regnum == IA64_PSR_REGNUM) |
244bc108 | 2073 | { |
15c1e57f JB |
2074 | /* We don't know how to get the complete previous PSR, but we need it |
2075 | for the slot information when we unwind the pc (pc is formed of IP | |
2076 | register plus slot information from PSR). To get the previous | |
2077 | slot information, we mask it off the return address. */ | |
004d836a | 2078 | ULONGEST slot_num = 0; |
15c1e57f | 2079 | CORE_ADDR pc = 0; |
004d836a | 2080 | CORE_ADDR psr = 0; |
4afcc598 | 2081 | CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM]; |
004d836a | 2082 | |
15c1e57f | 2083 | get_frame_register (this_frame, IA64_PSR_REGNUM, buf); |
e17a4113 | 2084 | psr = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 2085 | |
4afcc598 | 2086 | if (addr != 0) |
244bc108 | 2087 | { |
088568da | 2088 | read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM)); |
e17a4113 | 2089 | pc = extract_unsigned_integer (buf, 8, byte_order); |
244bc108 | 2090 | } |
4afcc598 | 2091 | else if (cache->frameless) |
004d836a | 2092 | { |
15c1e57f | 2093 | get_frame_register (this_frame, IA64_BR0_REGNUM, buf); |
e17a4113 | 2094 | pc = extract_unsigned_integer (buf, 8, byte_order); |
004d836a JJ |
2095 | } |
2096 | psr &= ~(3LL << 41); | |
2097 | slot_num = pc & 0x3LL; | |
2098 | psr |= (CORE_ADDR)slot_num << 41; | |
15c1e57f | 2099 | return frame_unwind_got_constant (this_frame, regnum, psr); |
004d836a | 2100 | } |
15c1e57f | 2101 | |
4afcc598 JJ |
2102 | else if (regnum == IA64_BR0_REGNUM) |
2103 | { | |
4afcc598 | 2104 | CORE_ADDR addr = cache->saved_regs[IA64_BR0_REGNUM]; |
15c1e57f | 2105 | |
4afcc598 | 2106 | if (addr != 0) |
15c1e57f JB |
2107 | return frame_unwind_got_memory (this_frame, regnum, addr); |
2108 | ||
2109 | return frame_unwind_got_constant (this_frame, regnum, 0); | |
4afcc598 | 2110 | } |
15c1e57f JB |
2111 | |
2112 | else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) | |
2113 | || (regnum >= V32_REGNUM && regnum <= V127_REGNUM)) | |
004d836a JJ |
2114 | { |
2115 | CORE_ADDR addr = 0; | |
15c1e57f | 2116 | |
004d836a JJ |
2117 | if (regnum >= V32_REGNUM) |
2118 | regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM); | |
2119 | addr = cache->saved_regs[regnum]; | |
244bc108 | 2120 | if (addr != 0) |
15c1e57f JB |
2121 | return frame_unwind_got_memory (this_frame, regnum, addr); |
2122 | ||
2123 | if (cache->frameless) | |
244bc108 | 2124 | { |
15c1e57f JB |
2125 | struct value *reg_val; |
2126 | CORE_ADDR prev_cfm, prev_bsp, prev_bof; | |
2127 | ||
2128 | /* FIXME: brobecker/2008-05-01: Doesn't this seem redundant | |
2129 | with the same code above? */ | |
004d836a JJ |
2130 | if (regnum >= V32_REGNUM) |
2131 | regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM); | |
15c1e57f JB |
2132 | reg_val = ia64_frame_prev_register (this_frame, this_cache, |
2133 | IA64_CFM_REGNUM); | |
2134 | prev_cfm = extract_unsigned_integer (value_contents_all (reg_val), | |
e17a4113 | 2135 | 8, byte_order); |
15c1e57f JB |
2136 | reg_val = ia64_frame_prev_register (this_frame, this_cache, |
2137 | IA64_BSP_REGNUM); | |
2138 | prev_bsp = extract_unsigned_integer (value_contents_all (reg_val), | |
e17a4113 | 2139 | 8, byte_order); |
004d836a JJ |
2140 | prev_bof = rse_address_add (prev_bsp, -(prev_cfm & 0x7f)); |
2141 | ||
2142 | addr = rse_address_add (prev_bof, (regnum - IA64_GR32_REGNUM)); | |
15c1e57f | 2143 | return frame_unwind_got_memory (this_frame, regnum, addr); |
244bc108 | 2144 | } |
15c1e57f JB |
2145 | |
2146 | return frame_unwind_got_constant (this_frame, regnum, 0); | |
16461d7d | 2147 | } |
15c1e57f JB |
2148 | |
2149 | else /* All other registers. */ | |
16461d7d | 2150 | { |
004d836a | 2151 | CORE_ADDR addr = 0; |
15c1e57f | 2152 | |
3a854e23 KB |
2153 | if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM) |
2154 | { | |
2155 | /* Fetch floating point register rename base from current | |
004d836a JJ |
2156 | frame marker for this frame. */ |
2157 | int rrb_fr = (cache->cfm >> 25) & 0x7f; | |
3a854e23 KB |
2158 | |
2159 | /* Adjust the floating point register number to account for | |
004d836a | 2160 | register rotation. */ |
3a854e23 KB |
2161 | regnum = IA64_FR32_REGNUM |
2162 | + ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96; | |
2163 | } | |
2164 | ||
004d836a JJ |
2165 | /* If we have stored a memory address, access the register. */ |
2166 | addr = cache->saved_regs[regnum]; | |
2167 | if (addr != 0) | |
15c1e57f | 2168 | return frame_unwind_got_memory (this_frame, regnum, addr); |
004d836a JJ |
2169 | /* Otherwise, punt and get the current value of the register. */ |
2170 | else | |
15c1e57f | 2171 | return frame_unwind_got_register (this_frame, regnum, regnum); |
16461d7d | 2172 | } |
16461d7d | 2173 | } |
004d836a JJ |
2174 | |
2175 | static const struct frame_unwind ia64_frame_unwind = | |
2176 | { | |
2177 | NORMAL_FRAME, | |
8fbca658 | 2178 | default_frame_unwind_stop_reason, |
004d836a | 2179 | &ia64_frame_this_id, |
15c1e57f JB |
2180 | &ia64_frame_prev_register, |
2181 | NULL, | |
2182 | default_frame_sniffer | |
004d836a JJ |
2183 | }; |
2184 | ||
004d836a JJ |
2185 | /* Signal trampolines. */ |
2186 | ||
2187 | static void | |
15c1e57f | 2188 | ia64_sigtramp_frame_init_saved_regs (struct frame_info *this_frame, |
2685572f | 2189 | struct ia64_frame_cache *cache) |
004d836a | 2190 | { |
e17a4113 UW |
2191 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
2192 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
2685572f UW |
2193 | |
2194 | if (tdep->sigcontext_register_address) | |
004d836a JJ |
2195 | { |
2196 | int regno; | |
2197 | ||
1777feb0 MS |
2198 | cache->saved_regs[IA64_VRAP_REGNUM] |
2199 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2200 | IA64_IP_REGNUM); | |
2201 | cache->saved_regs[IA64_CFM_REGNUM] | |
2202 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2203 | IA64_CFM_REGNUM); | |
2204 | cache->saved_regs[IA64_PSR_REGNUM] | |
2205 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2206 | IA64_PSR_REGNUM); | |
2207 | cache->saved_regs[IA64_BSP_REGNUM] | |
2208 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2209 | IA64_BSP_REGNUM); | |
2210 | cache->saved_regs[IA64_RNAT_REGNUM] | |
2211 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2212 | IA64_RNAT_REGNUM); | |
2213 | cache->saved_regs[IA64_CCV_REGNUM] | |
2214 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2215 | IA64_CCV_REGNUM); | |
2216 | cache->saved_regs[IA64_UNAT_REGNUM] | |
2217 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2218 | IA64_UNAT_REGNUM); | |
2219 | cache->saved_regs[IA64_FPSR_REGNUM] | |
2220 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2221 | IA64_FPSR_REGNUM); | |
2222 | cache->saved_regs[IA64_PFS_REGNUM] | |
2223 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2224 | IA64_PFS_REGNUM); | |
2225 | cache->saved_regs[IA64_LC_REGNUM] | |
2226 | = tdep->sigcontext_register_address (gdbarch, cache->base, | |
2227 | IA64_LC_REGNUM); | |
2228 | ||
004d836a | 2229 | for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++) |
4afcc598 | 2230 | cache->saved_regs[regno] = |
e17a4113 | 2231 | tdep->sigcontext_register_address (gdbarch, cache->base, regno); |
004d836a JJ |
2232 | for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++) |
2233 | cache->saved_regs[regno] = | |
e17a4113 | 2234 | tdep->sigcontext_register_address (gdbarch, cache->base, regno); |
932644f0 | 2235 | for (regno = IA64_FR2_REGNUM; regno <= IA64_FR31_REGNUM; regno++) |
004d836a | 2236 | cache->saved_regs[regno] = |
e17a4113 | 2237 | tdep->sigcontext_register_address (gdbarch, cache->base, regno); |
004d836a JJ |
2238 | } |
2239 | } | |
2240 | ||
2241 | static struct ia64_frame_cache * | |
15c1e57f | 2242 | ia64_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache) |
004d836a | 2243 | { |
e17a4113 UW |
2244 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
2245 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
004d836a JJ |
2246 | struct ia64_frame_cache *cache; |
2247 | CORE_ADDR addr; | |
2248 | char buf[8]; | |
2249 | int i; | |
2250 | ||
2251 | if (*this_cache) | |
2252 | return *this_cache; | |
2253 | ||
2254 | cache = ia64_alloc_frame_cache (); | |
2255 | ||
15c1e57f | 2256 | get_frame_register (this_frame, sp_regnum, buf); |
4afcc598 JJ |
2257 | /* Note that frame size is hard-coded below. We cannot calculate it |
2258 | via prologue examination. */ | |
e17a4113 | 2259 | cache->base = extract_unsigned_integer (buf, 8, byte_order) + 16; |
4afcc598 | 2260 | |
15c1e57f | 2261 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 2262 | cache->bsp = extract_unsigned_integer (buf, 8, byte_order); |
4afcc598 | 2263 | |
15c1e57f | 2264 | get_frame_register (this_frame, IA64_CFM_REGNUM, buf); |
e17a4113 | 2265 | cache->cfm = extract_unsigned_integer (buf, 8, byte_order); |
4afcc598 | 2266 | cache->sof = cache->cfm & 0x7f; |
004d836a | 2267 | |
15c1e57f | 2268 | ia64_sigtramp_frame_init_saved_regs (this_frame, cache); |
004d836a JJ |
2269 | |
2270 | *this_cache = cache; | |
2271 | return cache; | |
2272 | } | |
2273 | ||
2274 | static void | |
15c1e57f JB |
2275 | ia64_sigtramp_frame_this_id (struct frame_info *this_frame, |
2276 | void **this_cache, struct frame_id *this_id) | |
004d836a | 2277 | { |
5af949e3 | 2278 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
004d836a | 2279 | struct ia64_frame_cache *cache = |
15c1e57f | 2280 | ia64_sigtramp_frame_cache (this_frame, this_cache); |
004d836a | 2281 | |
15c1e57f JB |
2282 | (*this_id) = frame_id_build_special (cache->base, |
2283 | get_frame_pc (this_frame), | |
2284 | cache->bsp); | |
4afcc598 JJ |
2285 | if (gdbarch_debug >= 1) |
2286 | fprintf_unfiltered (gdb_stdlog, | |
1777feb0 MS |
2287 | "sigtramp frame id: code %s, stack %s, " |
2288 | "special %s, this_frame %s\n", | |
5af949e3 UW |
2289 | paddress (gdbarch, this_id->code_addr), |
2290 | paddress (gdbarch, this_id->stack_addr), | |
2291 | paddress (gdbarch, cache->bsp), | |
dfc3cd0e | 2292 | host_address_to_string (this_frame)); |
004d836a JJ |
2293 | } |
2294 | ||
15c1e57f JB |
2295 | static struct value * |
2296 | ia64_sigtramp_frame_prev_register (struct frame_info *this_frame, | |
2297 | void **this_cache, int regnum) | |
004d836a | 2298 | { |
4afcc598 JJ |
2299 | char buf[MAX_REGISTER_SIZE]; |
2300 | ||
15c1e57f | 2301 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 2302 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
4afcc598 | 2303 | struct ia64_frame_cache *cache = |
15c1e57f | 2304 | ia64_sigtramp_frame_cache (this_frame, this_cache); |
4afcc598 JJ |
2305 | |
2306 | gdb_assert (regnum >= 0); | |
2307 | ||
2308 | if (!target_has_registers) | |
8a3fe4f8 | 2309 | error (_("No registers.")); |
4afcc598 | 2310 | |
4afcc598 JJ |
2311 | if (regnum == IA64_IP_REGNUM) |
2312 | { | |
2313 | CORE_ADDR pc = 0; | |
2314 | CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM]; | |
2315 | ||
2316 | if (addr != 0) | |
2317 | { | |
088568da | 2318 | read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM)); |
e17a4113 | 2319 | pc = extract_unsigned_integer (buf, 8, byte_order); |
4afcc598 JJ |
2320 | } |
2321 | pc &= ~0xf; | |
15c1e57f | 2322 | return frame_unwind_got_constant (this_frame, regnum, pc); |
4afcc598 | 2323 | } |
15c1e57f JB |
2324 | |
2325 | else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) | |
2326 | || (regnum >= V32_REGNUM && regnum <= V127_REGNUM)) | |
4afcc598 JJ |
2327 | { |
2328 | CORE_ADDR addr = 0; | |
15c1e57f | 2329 | |
4afcc598 JJ |
2330 | if (regnum >= V32_REGNUM) |
2331 | regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM); | |
2332 | addr = cache->saved_regs[regnum]; | |
2333 | if (addr != 0) | |
15c1e57f JB |
2334 | return frame_unwind_got_memory (this_frame, regnum, addr); |
2335 | ||
2336 | return frame_unwind_got_constant (this_frame, regnum, 0); | |
4afcc598 | 2337 | } |
15c1e57f JB |
2338 | |
2339 | else /* All other registers not listed above. */ | |
4afcc598 | 2340 | { |
4afcc598 | 2341 | CORE_ADDR addr = cache->saved_regs[regnum]; |
15c1e57f | 2342 | |
4afcc598 | 2343 | if (addr != 0) |
15c1e57f | 2344 | return frame_unwind_got_memory (this_frame, regnum, addr); |
004d836a | 2345 | |
15c1e57f JB |
2346 | return frame_unwind_got_constant (this_frame, regnum, 0); |
2347 | } | |
004d836a JJ |
2348 | } |
2349 | ||
15c1e57f JB |
2350 | static int |
2351 | ia64_sigtramp_frame_sniffer (const struct frame_unwind *self, | |
2352 | struct frame_info *this_frame, | |
2353 | void **this_cache) | |
004d836a | 2354 | { |
15c1e57f | 2355 | struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame)); |
74174d2e UW |
2356 | if (tdep->pc_in_sigtramp) |
2357 | { | |
15c1e57f | 2358 | CORE_ADDR pc = get_frame_pc (this_frame); |
004d836a | 2359 | |
74174d2e | 2360 | if (tdep->pc_in_sigtramp (pc)) |
15c1e57f | 2361 | return 1; |
74174d2e | 2362 | } |
004d836a | 2363 | |
15c1e57f | 2364 | return 0; |
004d836a | 2365 | } |
15c1e57f JB |
2366 | |
2367 | static const struct frame_unwind ia64_sigtramp_frame_unwind = | |
2368 | { | |
2369 | SIGTRAMP_FRAME, | |
8fbca658 | 2370 | default_frame_unwind_stop_reason, |
15c1e57f JB |
2371 | ia64_sigtramp_frame_this_id, |
2372 | ia64_sigtramp_frame_prev_register, | |
2373 | NULL, | |
2374 | ia64_sigtramp_frame_sniffer | |
2375 | }; | |
2376 | ||
004d836a JJ |
2377 | \f |
2378 | ||
2379 | static CORE_ADDR | |
15c1e57f | 2380 | ia64_frame_base_address (struct frame_info *this_frame, void **this_cache) |
004d836a | 2381 | { |
15c1e57f | 2382 | struct ia64_frame_cache *cache = ia64_frame_cache (this_frame, this_cache); |
004d836a JJ |
2383 | |
2384 | return cache->base; | |
2385 | } | |
2386 | ||
2387 | static const struct frame_base ia64_frame_base = | |
2388 | { | |
2389 | &ia64_frame_unwind, | |
2390 | ia64_frame_base_address, | |
2391 | ia64_frame_base_address, | |
2392 | ia64_frame_base_address | |
2393 | }; | |
16461d7d | 2394 | |
968d1cb4 JJ |
2395 | #ifdef HAVE_LIBUNWIND_IA64_H |
2396 | ||
2397 | struct ia64_unwind_table_entry | |
2398 | { | |
2399 | unw_word_t start_offset; | |
2400 | unw_word_t end_offset; | |
2401 | unw_word_t info_offset; | |
2402 | }; | |
2403 | ||
2404 | static __inline__ uint64_t | |
2405 | ia64_rse_slot_num (uint64_t addr) | |
2406 | { | |
2407 | return (addr >> 3) & 0x3f; | |
2408 | } | |
2409 | ||
2410 | /* Skip over a designated number of registers in the backing | |
2411 | store, remembering every 64th position is for NAT. */ | |
2412 | static __inline__ uint64_t | |
2413 | ia64_rse_skip_regs (uint64_t addr, long num_regs) | |
2414 | { | |
2415 | long delta = ia64_rse_slot_num(addr) + num_regs; | |
2416 | ||
2417 | if (num_regs < 0) | |
2418 | delta -= 0x3e; | |
2419 | return addr + ((num_regs + delta/0x3f) << 3); | |
2420 | } | |
2421 | ||
2422 | /* Gdb libunwind-frame callback function to convert from an ia64 gdb register | |
2423 | number to a libunwind register number. */ | |
2424 | static int | |
2425 | ia64_gdb2uw_regnum (int regnum) | |
2426 | { | |
2427 | if (regnum == sp_regnum) | |
2428 | return UNW_IA64_SP; | |
2429 | else if (regnum == IA64_BSP_REGNUM) | |
2430 | return UNW_IA64_BSP; | |
2431 | else if ((unsigned) (regnum - IA64_GR0_REGNUM) < 128) | |
2432 | return UNW_IA64_GR + (regnum - IA64_GR0_REGNUM); | |
2433 | else if ((unsigned) (regnum - V32_REGNUM) < 95) | |
2434 | return UNW_IA64_GR + 32 + (regnum - V32_REGNUM); | |
2435 | else if ((unsigned) (regnum - IA64_FR0_REGNUM) < 128) | |
2436 | return UNW_IA64_FR + (regnum - IA64_FR0_REGNUM); | |
2437 | else if ((unsigned) (regnum - IA64_PR0_REGNUM) < 64) | |
2438 | return -1; | |
2439 | else if ((unsigned) (regnum - IA64_BR0_REGNUM) < 8) | |
2440 | return UNW_IA64_BR + (regnum - IA64_BR0_REGNUM); | |
2441 | else if (regnum == IA64_PR_REGNUM) | |
2442 | return UNW_IA64_PR; | |
2443 | else if (regnum == IA64_IP_REGNUM) | |
2444 | return UNW_REG_IP; | |
2445 | else if (regnum == IA64_CFM_REGNUM) | |
2446 | return UNW_IA64_CFM; | |
2447 | else if ((unsigned) (regnum - IA64_AR0_REGNUM) < 128) | |
2448 | return UNW_IA64_AR + (regnum - IA64_AR0_REGNUM); | |
2449 | else if ((unsigned) (regnum - IA64_NAT0_REGNUM) < 128) | |
2450 | return UNW_IA64_NAT + (regnum - IA64_NAT0_REGNUM); | |
2451 | else | |
2452 | return -1; | |
2453 | } | |
2454 | ||
2455 | /* Gdb libunwind-frame callback function to convert from a libunwind register | |
2456 | number to a ia64 gdb register number. */ | |
2457 | static int | |
2458 | ia64_uw2gdb_regnum (int uw_regnum) | |
2459 | { | |
2460 | if (uw_regnum == UNW_IA64_SP) | |
2461 | return sp_regnum; | |
2462 | else if (uw_regnum == UNW_IA64_BSP) | |
2463 | return IA64_BSP_REGNUM; | |
2464 | else if ((unsigned) (uw_regnum - UNW_IA64_GR) < 32) | |
2465 | return IA64_GR0_REGNUM + (uw_regnum - UNW_IA64_GR); | |
2466 | else if ((unsigned) (uw_regnum - UNW_IA64_GR) < 128) | |
2467 | return V32_REGNUM + (uw_regnum - (IA64_GR0_REGNUM + 32)); | |
2468 | else if ((unsigned) (uw_regnum - UNW_IA64_FR) < 128) | |
2469 | return IA64_FR0_REGNUM + (uw_regnum - UNW_IA64_FR); | |
2470 | else if ((unsigned) (uw_regnum - UNW_IA64_BR) < 8) | |
2471 | return IA64_BR0_REGNUM + (uw_regnum - UNW_IA64_BR); | |
2472 | else if (uw_regnum == UNW_IA64_PR) | |
2473 | return IA64_PR_REGNUM; | |
2474 | else if (uw_regnum == UNW_REG_IP) | |
2475 | return IA64_IP_REGNUM; | |
2476 | else if (uw_regnum == UNW_IA64_CFM) | |
2477 | return IA64_CFM_REGNUM; | |
2478 | else if ((unsigned) (uw_regnum - UNW_IA64_AR) < 128) | |
2479 | return IA64_AR0_REGNUM + (uw_regnum - UNW_IA64_AR); | |
2480 | else if ((unsigned) (uw_regnum - UNW_IA64_NAT) < 128) | |
2481 | return IA64_NAT0_REGNUM + (uw_regnum - UNW_IA64_NAT); | |
2482 | else | |
2483 | return -1; | |
2484 | } | |
2485 | ||
2486 | /* Gdb libunwind-frame callback function to reveal if register is a float | |
2487 | register or not. */ | |
2488 | static int | |
2489 | ia64_is_fpreg (int uw_regnum) | |
2490 | { | |
2491 | return unw_is_fpreg (uw_regnum); | |
2492 | } | |
77ca787b | 2493 | |
968d1cb4 JJ |
2494 | /* Libunwind callback accessor function for general registers. */ |
2495 | static int | |
2496 | ia64_access_reg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_word_t *val, | |
2497 | int write, void *arg) | |
2498 | { | |
2499 | int regnum = ia64_uw2gdb_regnum (uw_regnum); | |
2500 | unw_word_t bsp, sof, sol, cfm, psr, ip; | |
15c1e57f | 2501 | struct frame_info *this_frame = arg; |
5af949e3 | 2502 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 2503 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
968d1cb4 JJ |
2504 | long new_sof, old_sof; |
2505 | char buf[MAX_REGISTER_SIZE]; | |
2506 | ||
45ecac4b UW |
2507 | /* We never call any libunwind routines that need to write registers. */ |
2508 | gdb_assert (!write); | |
968d1cb4 | 2509 | |
45ecac4b | 2510 | switch (uw_regnum) |
968d1cb4 | 2511 | { |
45ecac4b UW |
2512 | case UNW_REG_IP: |
2513 | /* Libunwind expects to see the pc value which means the slot number | |
2514 | from the psr must be merged with the ip word address. */ | |
15c1e57f | 2515 | get_frame_register (this_frame, IA64_IP_REGNUM, buf); |
e17a4113 | 2516 | ip = extract_unsigned_integer (buf, 8, byte_order); |
15c1e57f | 2517 | get_frame_register (this_frame, IA64_PSR_REGNUM, buf); |
e17a4113 | 2518 | psr = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b UW |
2519 | *val = ip | ((psr >> 41) & 0x3); |
2520 | break; | |
2521 | ||
2522 | case UNW_IA64_AR_BSP: | |
1777feb0 MS |
2523 | /* Libunwind expects to see the beginning of the current |
2524 | register frame so we must account for the fact that | |
2525 | ptrace() will return a value for bsp that points *after* | |
2526 | the current register frame. */ | |
15c1e57f | 2527 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 2528 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
15c1e57f | 2529 | get_frame_register (this_frame, IA64_CFM_REGNUM, buf); |
e17a4113 | 2530 | cfm = extract_unsigned_integer (buf, 8, byte_order); |
77ca787b | 2531 | sof = gdbarch_tdep (gdbarch)->size_of_register_frame (this_frame, cfm); |
45ecac4b UW |
2532 | *val = ia64_rse_skip_regs (bsp, -sof); |
2533 | break; | |
968d1cb4 | 2534 | |
45ecac4b UW |
2535 | case UNW_IA64_AR_BSPSTORE: |
2536 | /* Libunwind wants bspstore to be after the current register frame. | |
2537 | This is what ptrace() and gdb treats as the regular bsp value. */ | |
15c1e57f | 2538 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 2539 | *val = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b UW |
2540 | break; |
2541 | ||
2542 | default: | |
2543 | /* For all other registers, just unwind the value directly. */ | |
15c1e57f | 2544 | get_frame_register (this_frame, regnum, buf); |
e17a4113 | 2545 | *val = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b | 2546 | break; |
968d1cb4 | 2547 | } |
45ecac4b UW |
2548 | |
2549 | if (gdbarch_debug >= 1) | |
2550 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 | 2551 | " access_reg: from cache: %4s=%s\n", |
45ecac4b UW |
2552 | (((unsigned) regnum <= IA64_NAT127_REGNUM) |
2553 | ? ia64_register_names[regnum] : "r??"), | |
2edfe795 | 2554 | paddress (gdbarch, *val)); |
968d1cb4 JJ |
2555 | return 0; |
2556 | } | |
2557 | ||
2558 | /* Libunwind callback accessor function for floating-point registers. */ | |
2559 | static int | |
1777feb0 MS |
2560 | ia64_access_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum, |
2561 | unw_fpreg_t *val, int write, void *arg) | |
968d1cb4 JJ |
2562 | { |
2563 | int regnum = ia64_uw2gdb_regnum (uw_regnum); | |
15c1e57f | 2564 | struct frame_info *this_frame = arg; |
968d1cb4 | 2565 | |
45ecac4b UW |
2566 | /* We never call any libunwind routines that need to write registers. */ |
2567 | gdb_assert (!write); | |
2568 | ||
15c1e57f | 2569 | get_frame_register (this_frame, regnum, (char *) val); |
45ecac4b | 2570 | |
968d1cb4 JJ |
2571 | return 0; |
2572 | } | |
2573 | ||
c5a27d9c JJ |
2574 | /* Libunwind callback accessor function for top-level rse registers. */ |
2575 | static int | |
1777feb0 MS |
2576 | ia64_access_rse_reg (unw_addr_space_t as, unw_regnum_t uw_regnum, |
2577 | unw_word_t *val, int write, void *arg) | |
c5a27d9c JJ |
2578 | { |
2579 | int regnum = ia64_uw2gdb_regnum (uw_regnum); | |
2580 | unw_word_t bsp, sof, sol, cfm, psr, ip; | |
45ecac4b | 2581 | struct regcache *regcache = arg; |
5af949e3 | 2582 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
e17a4113 | 2583 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c5a27d9c | 2584 | long new_sof, old_sof; |
45ecac4b | 2585 | char buf[MAX_REGISTER_SIZE]; |
c5a27d9c | 2586 | |
45ecac4b UW |
2587 | /* We never call any libunwind routines that need to write registers. */ |
2588 | gdb_assert (!write); | |
c5a27d9c | 2589 | |
45ecac4b | 2590 | switch (uw_regnum) |
c5a27d9c | 2591 | { |
45ecac4b UW |
2592 | case UNW_REG_IP: |
2593 | /* Libunwind expects to see the pc value which means the slot number | |
2594 | from the psr must be merged with the ip word address. */ | |
2595 | regcache_cooked_read (regcache, IA64_IP_REGNUM, buf); | |
e17a4113 | 2596 | ip = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b | 2597 | regcache_cooked_read (regcache, IA64_PSR_REGNUM, buf); |
e17a4113 | 2598 | psr = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b UW |
2599 | *val = ip | ((psr >> 41) & 0x3); |
2600 | break; | |
c5a27d9c | 2601 | |
45ecac4b | 2602 | case UNW_IA64_AR_BSP: |
1777feb0 MS |
2603 | /* Libunwind expects to see the beginning of the current |
2604 | register frame so we must account for the fact that | |
2605 | ptrace() will return a value for bsp that points *after* | |
2606 | the current register frame. */ | |
45ecac4b | 2607 | regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf); |
e17a4113 | 2608 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b | 2609 | regcache_cooked_read (regcache, IA64_CFM_REGNUM, buf); |
e17a4113 | 2610 | cfm = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b UW |
2611 | sof = (cfm & 0x7f); |
2612 | *val = ia64_rse_skip_regs (bsp, -sof); | |
2613 | break; | |
c5a27d9c | 2614 | |
45ecac4b UW |
2615 | case UNW_IA64_AR_BSPSTORE: |
2616 | /* Libunwind wants bspstore to be after the current register frame. | |
2617 | This is what ptrace() and gdb treats as the regular bsp value. */ | |
2618 | regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf); | |
e17a4113 | 2619 | *val = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b | 2620 | break; |
c5a27d9c | 2621 | |
45ecac4b UW |
2622 | default: |
2623 | /* For all other registers, just unwind the value directly. */ | |
2624 | regcache_cooked_read (regcache, regnum, buf); | |
e17a4113 | 2625 | *val = extract_unsigned_integer (buf, 8, byte_order); |
45ecac4b | 2626 | break; |
c5a27d9c JJ |
2627 | } |
2628 | ||
2629 | if (gdbarch_debug >= 1) | |
2630 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 | 2631 | " access_rse_reg: from cache: %4s=%s\n", |
c5a27d9c JJ |
2632 | (((unsigned) regnum <= IA64_NAT127_REGNUM) |
2633 | ? ia64_register_names[regnum] : "r??"), | |
5af949e3 | 2634 | paddress (gdbarch, *val)); |
c5a27d9c JJ |
2635 | |
2636 | return 0; | |
2637 | } | |
2638 | ||
45ecac4b UW |
2639 | /* Libunwind callback accessor function for top-level fp registers. */ |
2640 | static int | |
2641 | ia64_access_rse_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum, | |
2642 | unw_fpreg_t *val, int write, void *arg) | |
2643 | { | |
2644 | int regnum = ia64_uw2gdb_regnum (uw_regnum); | |
2645 | struct regcache *regcache = arg; | |
2646 | ||
2647 | /* We never call any libunwind routines that need to write registers. */ | |
2648 | gdb_assert (!write); | |
2649 | ||
2650 | regcache_cooked_read (regcache, regnum, (char *) val); | |
2651 | ||
2652 | return 0; | |
2653 | } | |
2654 | ||
968d1cb4 JJ |
2655 | /* Libunwind callback accessor function for accessing memory. */ |
2656 | static int | |
2657 | ia64_access_mem (unw_addr_space_t as, | |
2658 | unw_word_t addr, unw_word_t *val, | |
2659 | int write, void *arg) | |
2660 | { | |
c5a27d9c JJ |
2661 | if (addr - KERNEL_START < ktab_size) |
2662 | { | |
2663 | unw_word_t *laddr = (unw_word_t*) ((char *) ktab | |
2664 | + (addr - KERNEL_START)); | |
2665 | ||
2666 | if (write) | |
2667 | *laddr = *val; | |
2668 | else | |
2669 | *val = *laddr; | |
2670 | return 0; | |
2671 | } | |
2672 | ||
968d1cb4 JJ |
2673 | /* XXX do we need to normalize byte-order here? */ |
2674 | if (write) | |
2675 | return target_write_memory (addr, (char *) val, sizeof (unw_word_t)); | |
2676 | else | |
2677 | return target_read_memory (addr, (char *) val, sizeof (unw_word_t)); | |
2678 | } | |
2679 | ||
2680 | /* Call low-level function to access the kernel unwind table. */ | |
13547ab6 DJ |
2681 | static LONGEST |
2682 | getunwind_table (gdb_byte **buf_p) | |
968d1cb4 JJ |
2683 | { |
2684 | LONGEST x; | |
c5a27d9c | 2685 | |
10d6c8cd DJ |
2686 | /* FIXME drow/2005-09-10: This code used to call |
2687 | ia64_linux_xfer_unwind_table directly to fetch the unwind table | |
2688 | for the currently running ia64-linux kernel. That data should | |
2689 | come from the core file and be accessed via the auxv vector; if | |
2690 | we want to preserve fall back to the running kernel's table, then | |
2691 | we should find a way to override the corefile layer's | |
2692 | xfer_partial method. */ | |
968d1cb4 | 2693 | |
13547ab6 DJ |
2694 | x = target_read_alloc (¤t_target, TARGET_OBJECT_UNWIND_TABLE, |
2695 | NULL, buf_p); | |
2696 | ||
2697 | return x; | |
968d1cb4 | 2698 | } |
10d6c8cd | 2699 | |
968d1cb4 JJ |
2700 | /* Get the kernel unwind table. */ |
2701 | static int | |
2702 | get_kernel_table (unw_word_t ip, unw_dyn_info_t *di) | |
2703 | { | |
c5a27d9c | 2704 | static struct ia64_table_entry *etab; |
968d1cb4 | 2705 | |
c5a27d9c | 2706 | if (!ktab) |
968d1cb4 | 2707 | { |
13547ab6 | 2708 | gdb_byte *ktab_buf; |
eeec829c | 2709 | LONGEST size; |
13547ab6 | 2710 | |
eeec829c DJ |
2711 | size = getunwind_table (&ktab_buf); |
2712 | if (size <= 0) | |
13547ab6 | 2713 | return -UNW_ENOINFO; |
eeec829c DJ |
2714 | |
2715 | ktab = (struct ia64_table_entry *) ktab_buf; | |
2716 | ktab_size = size; | |
13547ab6 | 2717 | |
968d1cb4 | 2718 | for (etab = ktab; etab->start_offset; ++etab) |
c5a27d9c | 2719 | etab->info_offset += KERNEL_START; |
968d1cb4 JJ |
2720 | } |
2721 | ||
2722 | if (ip < ktab[0].start_offset || ip >= etab[-1].end_offset) | |
2723 | return -UNW_ENOINFO; | |
2724 | ||
2725 | di->format = UNW_INFO_FORMAT_TABLE; | |
2726 | di->gp = 0; | |
2727 | di->start_ip = ktab[0].start_offset; | |
2728 | di->end_ip = etab[-1].end_offset; | |
2729 | di->u.ti.name_ptr = (unw_word_t) "<kernel>"; | |
2730 | di->u.ti.segbase = 0; | |
2731 | di->u.ti.table_len = ((char *) etab - (char *) ktab) / sizeof (unw_word_t); | |
2732 | di->u.ti.table_data = (unw_word_t *) ktab; | |
2733 | ||
2734 | if (gdbarch_debug >= 1) | |
2735 | fprintf_unfiltered (gdb_stdlog, "get_kernel_table: found table `%s': " | |
5af949e3 | 2736 | "segbase=%s, length=%s, gp=%s\n", |
78ced177 | 2737 | (char *) di->u.ti.name_ptr, |
5af949e3 | 2738 | hex_string (di->u.ti.segbase), |
623d3eb1 | 2739 | pulongest (di->u.ti.table_len), |
5af949e3 | 2740 | hex_string (di->gp)); |
968d1cb4 JJ |
2741 | return 0; |
2742 | } | |
2743 | ||
2744 | /* Find the unwind table entry for a specified address. */ | |
2745 | static int | |
2746 | ia64_find_unwind_table (struct objfile *objfile, unw_word_t ip, | |
2747 | unw_dyn_info_t *dip, void **buf) | |
2748 | { | |
2749 | Elf_Internal_Phdr *phdr, *p_text = NULL, *p_unwind = NULL; | |
2750 | Elf_Internal_Ehdr *ehdr; | |
2751 | unw_word_t segbase = 0; | |
2752 | CORE_ADDR load_base; | |
2753 | bfd *bfd; | |
2754 | int i; | |
2755 | ||
2756 | bfd = objfile->obfd; | |
2757 | ||
2758 | ehdr = elf_tdata (bfd)->elf_header; | |
2759 | phdr = elf_tdata (bfd)->phdr; | |
2760 | ||
2761 | load_base = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2762 | ||
2763 | for (i = 0; i < ehdr->e_phnum; ++i) | |
2764 | { | |
2765 | switch (phdr[i].p_type) | |
2766 | { | |
2767 | case PT_LOAD: | |
2768 | if ((unw_word_t) (ip - load_base - phdr[i].p_vaddr) | |
2769 | < phdr[i].p_memsz) | |
2770 | p_text = phdr + i; | |
2771 | break; | |
2772 | ||
2773 | case PT_IA_64_UNWIND: | |
2774 | p_unwind = phdr + i; | |
2775 | break; | |
2776 | ||
2777 | default: | |
2778 | break; | |
2779 | } | |
2780 | } | |
2781 | ||
c5a27d9c | 2782 | if (!p_text || !p_unwind) |
968d1cb4 JJ |
2783 | return -UNW_ENOINFO; |
2784 | ||
c5a27d9c JJ |
2785 | /* Verify that the segment that contains the IP also contains |
2786 | the static unwind table. If not, we may be in the Linux kernel's | |
1777feb0 | 2787 | DSO gate page in which case the unwind table is another segment. |
c5a27d9c JJ |
2788 | Otherwise, we are dealing with runtime-generated code, for which we |
2789 | have no info here. */ | |
968d1cb4 JJ |
2790 | segbase = p_text->p_vaddr + load_base; |
2791 | ||
c5a27d9c JJ |
2792 | if ((p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz) |
2793 | { | |
2794 | int ok = 0; | |
2795 | for (i = 0; i < ehdr->e_phnum; ++i) | |
2796 | { | |
2797 | if (phdr[i].p_type == PT_LOAD | |
2798 | && (p_unwind->p_vaddr - phdr[i].p_vaddr) < phdr[i].p_memsz) | |
2799 | { | |
2800 | ok = 1; | |
2801 | /* Get the segbase from the section containing the | |
2802 | libunwind table. */ | |
2803 | segbase = phdr[i].p_vaddr + load_base; | |
2804 | } | |
2805 | } | |
2806 | if (!ok) | |
2807 | return -UNW_ENOINFO; | |
2808 | } | |
2809 | ||
2810 | dip->start_ip = p_text->p_vaddr + load_base; | |
968d1cb4 | 2811 | dip->end_ip = dip->start_ip + p_text->p_memsz; |
e17a4113 | 2812 | dip->gp = ia64_find_global_pointer (get_objfile_arch (objfile), ip); |
503ff15d KB |
2813 | dip->format = UNW_INFO_FORMAT_REMOTE_TABLE; |
2814 | dip->u.rti.name_ptr = (unw_word_t) bfd_get_filename (bfd); | |
2815 | dip->u.rti.segbase = segbase; | |
2816 | dip->u.rti.table_len = p_unwind->p_memsz / sizeof (unw_word_t); | |
2817 | dip->u.rti.table_data = p_unwind->p_vaddr + load_base; | |
968d1cb4 JJ |
2818 | |
2819 | return 0; | |
2820 | } | |
2821 | ||
2822 | /* Libunwind callback accessor function to acquire procedure unwind-info. */ | |
2823 | static int | |
2824 | ia64_find_proc_info_x (unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi, | |
2825 | int need_unwind_info, void *arg) | |
2826 | { | |
2827 | struct obj_section *sec = find_pc_section (ip); | |
2828 | unw_dyn_info_t di; | |
2829 | int ret; | |
2830 | void *buf = NULL; | |
2831 | ||
2832 | if (!sec) | |
2833 | { | |
2834 | /* XXX This only works if the host and the target architecture are | |
2835 | both ia64 and if the have (more or less) the same kernel | |
2836 | version. */ | |
2837 | if (get_kernel_table (ip, &di) < 0) | |
2838 | return -UNW_ENOINFO; | |
503ff15d KB |
2839 | |
2840 | if (gdbarch_debug >= 1) | |
5af949e3 UW |
2841 | fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: %s -> " |
2842 | "(name=`%s',segbase=%s,start=%s,end=%s,gp=%s," | |
2843 | "length=%s,data=%s)\n", | |
2844 | hex_string (ip), (char *)di.u.ti.name_ptr, | |
2845 | hex_string (di.u.ti.segbase), | |
2846 | hex_string (di.start_ip), hex_string (di.end_ip), | |
2847 | hex_string (di.gp), | |
623d3eb1 | 2848 | pulongest (di.u.ti.table_len), |
5af949e3 | 2849 | hex_string ((CORE_ADDR)di.u.ti.table_data)); |
968d1cb4 JJ |
2850 | } |
2851 | else | |
2852 | { | |
2853 | ret = ia64_find_unwind_table (sec->objfile, ip, &di, &buf); | |
2854 | if (ret < 0) | |
2855 | return ret; | |
968d1cb4 | 2856 | |
503ff15d | 2857 | if (gdbarch_debug >= 1) |
5af949e3 UW |
2858 | fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: %s -> " |
2859 | "(name=`%s',segbase=%s,start=%s,end=%s,gp=%s," | |
2860 | "length=%s,data=%s)\n", | |
2861 | hex_string (ip), (char *)di.u.rti.name_ptr, | |
2862 | hex_string (di.u.rti.segbase), | |
2863 | hex_string (di.start_ip), hex_string (di.end_ip), | |
2864 | hex_string (di.gp), | |
623d3eb1 | 2865 | pulongest (di.u.rti.table_len), |
5af949e3 | 2866 | hex_string (di.u.rti.table_data)); |
503ff15d | 2867 | } |
968d1cb4 | 2868 | |
503ff15d KB |
2869 | ret = libunwind_search_unwind_table (&as, ip, &di, pi, need_unwind_info, |
2870 | arg); | |
968d1cb4 JJ |
2871 | |
2872 | /* We no longer need the dyn info storage so free it. */ | |
2873 | xfree (buf); | |
2874 | ||
2875 | return ret; | |
2876 | } | |
2877 | ||
2878 | /* Libunwind callback accessor function for cleanup. */ | |
2879 | static void | |
2880 | ia64_put_unwind_info (unw_addr_space_t as, | |
2881 | unw_proc_info_t *pip, void *arg) | |
2882 | { | |
2883 | /* Nothing required for now. */ | |
2884 | } | |
2885 | ||
2886 | /* Libunwind callback accessor function to get head of the dynamic | |
2887 | unwind-info registration list. */ | |
2888 | static int | |
2889 | ia64_get_dyn_info_list (unw_addr_space_t as, | |
2890 | unw_word_t *dilap, void *arg) | |
2891 | { | |
2892 | struct obj_section *text_sec; | |
2893 | struct objfile *objfile; | |
2894 | unw_word_t ip, addr; | |
2895 | unw_dyn_info_t di; | |
2896 | int ret; | |
2897 | ||
2898 | if (!libunwind_is_initialized ()) | |
2899 | return -UNW_ENOINFO; | |
2900 | ||
2901 | for (objfile = object_files; objfile; objfile = objfile->next) | |
2902 | { | |
2903 | void *buf = NULL; | |
2904 | ||
2905 | text_sec = objfile->sections + SECT_OFF_TEXT (objfile); | |
8b7a6d61 | 2906 | ip = obj_section_addr (text_sec); |
968d1cb4 JJ |
2907 | ret = ia64_find_unwind_table (objfile, ip, &di, &buf); |
2908 | if (ret >= 0) | |
2909 | { | |
503ff15d | 2910 | addr = libunwind_find_dyn_list (as, &di, arg); |
968d1cb4 JJ |
2911 | /* We no longer need the dyn info storage so free it. */ |
2912 | xfree (buf); | |
2913 | ||
2914 | if (addr) | |
2915 | { | |
2916 | if (gdbarch_debug >= 1) | |
2917 | fprintf_unfiltered (gdb_stdlog, | |
2918 | "dynamic unwind table in objfile %s " | |
5af949e3 | 2919 | "at %s (gp=%s)\n", |
968d1cb4 | 2920 | bfd_get_filename (objfile->obfd), |
5af949e3 | 2921 | hex_string (addr), hex_string (di.gp)); |
968d1cb4 JJ |
2922 | *dilap = addr; |
2923 | return 0; | |
2924 | } | |
2925 | } | |
2926 | } | |
2927 | return -UNW_ENOINFO; | |
2928 | } | |
2929 | ||
2930 | ||
2931 | /* Frame interface functions for libunwind. */ | |
2932 | ||
2933 | static void | |
15c1e57f | 2934 | ia64_libunwind_frame_this_id (struct frame_info *this_frame, void **this_cache, |
7166c4a9 | 2935 | struct frame_id *this_id) |
968d1cb4 | 2936 | { |
5af949e3 | 2937 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 2938 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
005ca36a | 2939 | struct frame_id id = outer_frame_id; |
968d1cb4 JJ |
2940 | char buf[8]; |
2941 | CORE_ADDR bsp; | |
c5a27d9c | 2942 | |
15c1e57f | 2943 | libunwind_frame_this_id (this_frame, this_cache, &id); |
005ca36a | 2944 | if (frame_id_eq (id, outer_frame_id)) |
c5a27d9c | 2945 | { |
005ca36a | 2946 | (*this_id) = outer_frame_id; |
c5a27d9c JJ |
2947 | return; |
2948 | } | |
968d1cb4 | 2949 | |
c5a27d9c JJ |
2950 | /* We must add the bsp as the special address for frame comparison |
2951 | purposes. */ | |
15c1e57f | 2952 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 2953 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
968d1cb4 | 2954 | |
15c1e57f | 2955 | (*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp); |
968d1cb4 JJ |
2956 | |
2957 | if (gdbarch_debug >= 1) | |
2958 | fprintf_unfiltered (gdb_stdlog, | |
1777feb0 MS |
2959 | "libunwind frame id: code %s, stack %s, " |
2960 | "special %s, this_frame %s\n", | |
5af949e3 UW |
2961 | paddress (gdbarch, id.code_addr), |
2962 | paddress (gdbarch, id.stack_addr), | |
2963 | paddress (gdbarch, bsp), | |
dfc3cd0e | 2964 | host_address_to_string (this_frame)); |
968d1cb4 JJ |
2965 | } |
2966 | ||
15c1e57f JB |
2967 | static struct value * |
2968 | ia64_libunwind_frame_prev_register (struct frame_info *this_frame, | |
2969 | void **this_cache, int regnum) | |
968d1cb4 JJ |
2970 | { |
2971 | int reg = regnum; | |
15c1e57f | 2972 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 2973 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
15c1e57f | 2974 | struct value *val; |
968d1cb4 JJ |
2975 | |
2976 | if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
2977 | reg = IA64_PR_REGNUM; | |
2978 | else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM) | |
2979 | reg = IA64_UNAT_REGNUM; | |
2980 | ||
2981 | /* Let libunwind do most of the work. */ | |
15c1e57f | 2982 | val = libunwind_frame_prev_register (this_frame, this_cache, reg); |
6672f2ae | 2983 | |
968d1cb4 JJ |
2984 | if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM) |
2985 | { | |
2986 | ULONGEST prN_val; | |
2987 | ||
2988 | if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM) | |
2989 | { | |
2990 | int rrb_pr = 0; | |
2991 | ULONGEST cfm; | |
2992 | unsigned char buf[MAX_REGISTER_SIZE]; | |
2993 | ||
2994 | /* Fetch predicate register rename base from current frame | |
2995 | marker for this frame. */ | |
15c1e57f | 2996 | get_frame_register (this_frame, IA64_CFM_REGNUM, buf); |
e17a4113 | 2997 | cfm = extract_unsigned_integer (buf, 8, byte_order); |
968d1cb4 JJ |
2998 | rrb_pr = (cfm >> 32) & 0x3f; |
2999 | ||
3000 | /* Adjust the register number to account for register rotation. */ | |
15c1e57f | 3001 | regnum = VP16_REGNUM + ((regnum - VP16_REGNUM) + rrb_pr) % 48; |
968d1cb4 | 3002 | } |
15c1e57f | 3003 | prN_val = extract_bit_field (value_contents_all (val), |
968d1cb4 | 3004 | regnum - VP0_REGNUM, 1); |
15c1e57f | 3005 | return frame_unwind_got_constant (this_frame, regnum, prN_val); |
968d1cb4 | 3006 | } |
15c1e57f | 3007 | |
968d1cb4 JJ |
3008 | else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM) |
3009 | { | |
3010 | ULONGEST unatN_val; | |
3011 | ||
15c1e57f JB |
3012 | unatN_val = extract_bit_field (value_contents_all (val), |
3013 | regnum - IA64_NAT0_REGNUM, 1); | |
3014 | return frame_unwind_got_constant (this_frame, regnum, unatN_val); | |
968d1cb4 | 3015 | } |
15c1e57f | 3016 | |
968d1cb4 JJ |
3017 | else if (regnum == IA64_BSP_REGNUM) |
3018 | { | |
15c1e57f JB |
3019 | struct value *cfm_val; |
3020 | CORE_ADDR prev_bsp, prev_cfm; | |
3021 | ||
3022 | /* We want to calculate the previous bsp as the end of the previous | |
3023 | register stack frame. This corresponds to what the hardware bsp | |
3024 | register will be if we pop the frame back which is why we might | |
3025 | have been called. We know that libunwind will pass us back the | |
1777feb0 | 3026 | beginning of the current frame so we should just add sof to it. */ |
e17a4113 UW |
3027 | prev_bsp = extract_unsigned_integer (value_contents_all (val), |
3028 | 8, byte_order); | |
15c1e57f JB |
3029 | cfm_val = libunwind_frame_prev_register (this_frame, this_cache, |
3030 | IA64_CFM_REGNUM); | |
e17a4113 UW |
3031 | prev_cfm = extract_unsigned_integer (value_contents_all (cfm_val), |
3032 | 8, byte_order); | |
968d1cb4 JJ |
3033 | prev_bsp = rse_address_add (prev_bsp, (prev_cfm & 0x7f)); |
3034 | ||
15c1e57f | 3035 | return frame_unwind_got_constant (this_frame, regnum, prev_bsp); |
968d1cb4 | 3036 | } |
15c1e57f JB |
3037 | else |
3038 | return val; | |
3039 | } | |
968d1cb4 | 3040 | |
15c1e57f JB |
3041 | static int |
3042 | ia64_libunwind_frame_sniffer (const struct frame_unwind *self, | |
3043 | struct frame_info *this_frame, | |
3044 | void **this_cache) | |
3045 | { | |
3046 | if (libunwind_is_initialized () | |
3047 | && libunwind_frame_sniffer (self, this_frame, this_cache)) | |
3048 | return 1; | |
3049 | ||
3050 | return 0; | |
968d1cb4 JJ |
3051 | } |
3052 | ||
3053 | static const struct frame_unwind ia64_libunwind_frame_unwind = | |
3054 | { | |
3055 | NORMAL_FRAME, | |
8fbca658 | 3056 | default_frame_unwind_stop_reason, |
968d1cb4 | 3057 | ia64_libunwind_frame_this_id, |
272dfcfd AS |
3058 | ia64_libunwind_frame_prev_register, |
3059 | NULL, | |
15c1e57f | 3060 | ia64_libunwind_frame_sniffer, |
272dfcfd | 3061 | libunwind_frame_dealloc_cache |
968d1cb4 JJ |
3062 | }; |
3063 | ||
c5a27d9c | 3064 | static void |
15c1e57f JB |
3065 | ia64_libunwind_sigtramp_frame_this_id (struct frame_info *this_frame, |
3066 | void **this_cache, | |
c5a27d9c JJ |
3067 | struct frame_id *this_id) |
3068 | { | |
5af949e3 | 3069 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
e17a4113 | 3070 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c5a27d9c JJ |
3071 | char buf[8]; |
3072 | CORE_ADDR bsp; | |
005ca36a | 3073 | struct frame_id id = outer_frame_id; |
c5a27d9c JJ |
3074 | CORE_ADDR prev_ip; |
3075 | ||
15c1e57f | 3076 | libunwind_frame_this_id (this_frame, this_cache, &id); |
005ca36a | 3077 | if (frame_id_eq (id, outer_frame_id)) |
c5a27d9c | 3078 | { |
005ca36a | 3079 | (*this_id) = outer_frame_id; |
c5a27d9c JJ |
3080 | return; |
3081 | } | |
3082 | ||
3083 | /* We must add the bsp as the special address for frame comparison | |
3084 | purposes. */ | |
15c1e57f | 3085 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 3086 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
c5a27d9c JJ |
3087 | |
3088 | /* For a sigtramp frame, we don't make the check for previous ip being 0. */ | |
3089 | (*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp); | |
3090 | ||
3091 | if (gdbarch_debug >= 1) | |
3092 | fprintf_unfiltered (gdb_stdlog, | |
1777feb0 MS |
3093 | "libunwind sigtramp frame id: code %s, " |
3094 | "stack %s, special %s, this_frame %s\n", | |
5af949e3 UW |
3095 | paddress (gdbarch, id.code_addr), |
3096 | paddress (gdbarch, id.stack_addr), | |
3097 | paddress (gdbarch, bsp), | |
dfc3cd0e | 3098 | host_address_to_string (this_frame)); |
c5a27d9c JJ |
3099 | } |
3100 | ||
15c1e57f JB |
3101 | static struct value * |
3102 | ia64_libunwind_sigtramp_frame_prev_register (struct frame_info *this_frame, | |
3103 | void **this_cache, int regnum) | |
c5a27d9c | 3104 | { |
e17a4113 UW |
3105 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
3106 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
15c1e57f JB |
3107 | struct value *prev_ip_val; |
3108 | CORE_ADDR prev_ip; | |
c5a27d9c JJ |
3109 | |
3110 | /* If the previous frame pc value is 0, then we want to use the SIGCONTEXT | |
3111 | method of getting previous registers. */ | |
15c1e57f JB |
3112 | prev_ip_val = libunwind_frame_prev_register (this_frame, this_cache, |
3113 | IA64_IP_REGNUM); | |
e17a4113 UW |
3114 | prev_ip = extract_unsigned_integer (value_contents_all (prev_ip_val), |
3115 | 8, byte_order); | |
c5a27d9c JJ |
3116 | |
3117 | if (prev_ip == 0) | |
3118 | { | |
3119 | void *tmp_cache = NULL; | |
15c1e57f JB |
3120 | return ia64_sigtramp_frame_prev_register (this_frame, &tmp_cache, |
3121 | regnum); | |
c5a27d9c JJ |
3122 | } |
3123 | else | |
15c1e57f | 3124 | return ia64_libunwind_frame_prev_register (this_frame, this_cache, regnum); |
c5a27d9c JJ |
3125 | } |
3126 | ||
15c1e57f JB |
3127 | static int |
3128 | ia64_libunwind_sigtramp_frame_sniffer (const struct frame_unwind *self, | |
3129 | struct frame_info *this_frame, | |
3130 | void **this_cache) | |
c5a27d9c JJ |
3131 | { |
3132 | if (libunwind_is_initialized ()) | |
3133 | { | |
15c1e57f JB |
3134 | if (libunwind_sigtramp_frame_sniffer (self, this_frame, this_cache)) |
3135 | return 1; | |
3136 | return 0; | |
c5a27d9c JJ |
3137 | } |
3138 | else | |
15c1e57f | 3139 | return ia64_sigtramp_frame_sniffer (self, this_frame, this_cache); |
c5a27d9c JJ |
3140 | } |
3141 | ||
15c1e57f JB |
3142 | static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind = |
3143 | { | |
3144 | SIGTRAMP_FRAME, | |
8fbca658 | 3145 | default_frame_unwind_stop_reason, |
15c1e57f JB |
3146 | ia64_libunwind_sigtramp_frame_this_id, |
3147 | ia64_libunwind_sigtramp_frame_prev_register, | |
3148 | NULL, | |
3149 | ia64_libunwind_sigtramp_frame_sniffer | |
3150 | }; | |
3151 | ||
968d1cb4 JJ |
3152 | /* Set of libunwind callback acccessor functions. */ |
3153 | static unw_accessors_t ia64_unw_accessors = | |
3154 | { | |
3155 | ia64_find_proc_info_x, | |
3156 | ia64_put_unwind_info, | |
3157 | ia64_get_dyn_info_list, | |
3158 | ia64_access_mem, | |
3159 | ia64_access_reg, | |
3160 | ia64_access_fpreg, | |
3161 | /* resume */ | |
3162 | /* get_proc_name */ | |
3163 | }; | |
3164 | ||
c5a27d9c JJ |
3165 | /* Set of special libunwind callback acccessor functions specific for accessing |
3166 | the rse registers. At the top of the stack, we want libunwind to figure out | |
1777feb0 MS |
3167 | how to read r32 - r127. Though usually they are found sequentially in |
3168 | memory starting from $bof, this is not always true. */ | |
c5a27d9c JJ |
3169 | static unw_accessors_t ia64_unw_rse_accessors = |
3170 | { | |
3171 | ia64_find_proc_info_x, | |
3172 | ia64_put_unwind_info, | |
3173 | ia64_get_dyn_info_list, | |
3174 | ia64_access_mem, | |
3175 | ia64_access_rse_reg, | |
45ecac4b | 3176 | ia64_access_rse_fpreg, |
c5a27d9c JJ |
3177 | /* resume */ |
3178 | /* get_proc_name */ | |
3179 | }; | |
3180 | ||
1777feb0 MS |
3181 | /* Set of ia64 gdb libunwind-frame callbacks and data for generic |
3182 | libunwind-frame code to use. */ | |
968d1cb4 JJ |
3183 | static struct libunwind_descr ia64_libunwind_descr = |
3184 | { | |
3185 | ia64_gdb2uw_regnum, | |
3186 | ia64_uw2gdb_regnum, | |
3187 | ia64_is_fpreg, | |
3188 | &ia64_unw_accessors, | |
c5a27d9c | 3189 | &ia64_unw_rse_accessors, |
968d1cb4 JJ |
3190 | }; |
3191 | ||
3192 | #endif /* HAVE_LIBUNWIND_IA64_H */ | |
3193 | ||
4c8b6ae0 UW |
3194 | static int |
3195 | ia64_use_struct_convention (struct type *type) | |
16461d7d | 3196 | { |
64a5b29c KB |
3197 | struct type *float_elt_type; |
3198 | ||
4c8b6ae0 UW |
3199 | /* Don't use the struct convention for anything but structure, |
3200 | union, or array types. */ | |
3201 | if (!(TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3202 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
3203 | || TYPE_CODE (type) == TYPE_CODE_ARRAY)) | |
3204 | return 0; | |
3205 | ||
64a5b29c KB |
3206 | /* HFAs are structures (or arrays) consisting entirely of floating |
3207 | point values of the same length. Up to 8 of these are returned | |
3208 | in registers. Don't use the struct convention when this is the | |
004d836a | 3209 | case. */ |
64a5b29c KB |
3210 | float_elt_type = is_float_or_hfa_type (type); |
3211 | if (float_elt_type != NULL | |
3212 | && TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type) <= 8) | |
3213 | return 0; | |
3214 | ||
3215 | /* Other structs of length 32 or less are returned in r8-r11. | |
004d836a | 3216 | Don't use the struct convention for those either. */ |
16461d7d KB |
3217 | return TYPE_LENGTH (type) > 32; |
3218 | } | |
3219 | ||
825d6d8a JB |
3220 | /* Return non-zero if TYPE is a structure or union type. */ |
3221 | ||
3222 | static int | |
3223 | ia64_struct_type_p (const struct type *type) | |
3224 | { | |
3225 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3226 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
3227 | } | |
3228 | ||
4c8b6ae0 | 3229 | static void |
2d522557 AC |
3230 | ia64_extract_return_value (struct type *type, struct regcache *regcache, |
3231 | gdb_byte *valbuf) | |
16461d7d | 3232 | { |
27067745 | 3233 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
64a5b29c KB |
3234 | struct type *float_elt_type; |
3235 | ||
3236 | float_elt_type = is_float_or_hfa_type (type); | |
3237 | if (float_elt_type != NULL) | |
3238 | { | |
004d836a | 3239 | char from[MAX_REGISTER_SIZE]; |
64a5b29c KB |
3240 | int offset = 0; |
3241 | int regnum = IA64_FR8_REGNUM; | |
3242 | int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type); | |
3243 | ||
3244 | while (n-- > 0) | |
3245 | { | |
004d836a | 3246 | regcache_cooked_read (regcache, regnum, from); |
27067745 | 3247 | convert_typed_floating (from, ia64_ext_type (gdbarch), |
1777feb0 | 3248 | (char *)valbuf + offset, float_elt_type); |
64a5b29c KB |
3249 | offset += TYPE_LENGTH (float_elt_type); |
3250 | regnum++; | |
3251 | } | |
3252 | } | |
825d6d8a JB |
3253 | else if (!ia64_struct_type_p (type) && TYPE_LENGTH (type) < 8) |
3254 | { | |
3255 | /* This is an integral value, and its size is less than 8 bytes. | |
3256 | These values are LSB-aligned, so extract the relevant bytes, | |
3257 | and copy them into VALBUF. */ | |
3258 | /* brobecker/2005-12-30: Actually, all integral values are LSB aligned, | |
3259 | so I suppose we should also add handling here for integral values | |
3260 | whose size is greater than 8. But I wasn't able to create such | |
3261 | a type, neither in C nor in Ada, so not worrying about these yet. */ | |
3262 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
3263 | ULONGEST val; | |
3264 | ||
3265 | regcache_cooked_read_unsigned (regcache, IA64_GR8_REGNUM, &val); | |
3266 | store_unsigned_integer (valbuf, TYPE_LENGTH (type), byte_order, val); | |
3267 | } | |
16461d7d | 3268 | else |
004d836a JJ |
3269 | { |
3270 | ULONGEST val; | |
3271 | int offset = 0; | |
3272 | int regnum = IA64_GR8_REGNUM; | |
27067745 | 3273 | int reglen = TYPE_LENGTH (register_type (gdbarch, IA64_GR8_REGNUM)); |
004d836a JJ |
3274 | int n = TYPE_LENGTH (type) / reglen; |
3275 | int m = TYPE_LENGTH (type) % reglen; | |
16461d7d | 3276 | |
004d836a JJ |
3277 | while (n-- > 0) |
3278 | { | |
3279 | ULONGEST val; | |
3280 | regcache_cooked_read_unsigned (regcache, regnum, &val); | |
3281 | memcpy ((char *)valbuf + offset, &val, reglen); | |
3282 | offset += reglen; | |
3283 | regnum++; | |
3284 | } | |
16461d7d | 3285 | |
004d836a JJ |
3286 | if (m) |
3287 | { | |
3288 | regcache_cooked_read_unsigned (regcache, regnum, &val); | |
3289 | memcpy ((char *)valbuf + offset, &val, m); | |
3290 | } | |
3291 | } | |
16461d7d KB |
3292 | } |
3293 | ||
4c8b6ae0 UW |
3294 | static void |
3295 | ia64_store_return_value (struct type *type, struct regcache *regcache, | |
3296 | const gdb_byte *valbuf) | |
3297 | { | |
27067745 | 3298 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
4c8b6ae0 UW |
3299 | struct type *float_elt_type; |
3300 | ||
3301 | float_elt_type = is_float_or_hfa_type (type); | |
3302 | if (float_elt_type != NULL) | |
3303 | { | |
3304 | char to[MAX_REGISTER_SIZE]; | |
3305 | int offset = 0; | |
3306 | int regnum = IA64_FR8_REGNUM; | |
3307 | int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type); | |
3308 | ||
3309 | while (n-- > 0) | |
3310 | { | |
3311 | convert_typed_floating ((char *)valbuf + offset, float_elt_type, | |
27067745 | 3312 | to, ia64_ext_type (gdbarch)); |
4c8b6ae0 UW |
3313 | regcache_cooked_write (regcache, regnum, to); |
3314 | offset += TYPE_LENGTH (float_elt_type); | |
3315 | regnum++; | |
3316 | } | |
3317 | } | |
3318 | else | |
3319 | { | |
3320 | ULONGEST val; | |
3321 | int offset = 0; | |
3322 | int regnum = IA64_GR8_REGNUM; | |
27067745 | 3323 | int reglen = TYPE_LENGTH (register_type (gdbarch, IA64_GR8_REGNUM)); |
4c8b6ae0 UW |
3324 | int n = TYPE_LENGTH (type) / reglen; |
3325 | int m = TYPE_LENGTH (type) % reglen; | |
3326 | ||
3327 | while (n-- > 0) | |
3328 | { | |
3329 | ULONGEST val; | |
3330 | memcpy (&val, (char *)valbuf + offset, reglen); | |
3331 | regcache_cooked_write_unsigned (regcache, regnum, val); | |
3332 | offset += reglen; | |
3333 | regnum++; | |
3334 | } | |
3335 | ||
3336 | if (m) | |
3337 | { | |
3338 | memcpy (&val, (char *)valbuf + offset, m); | |
3339 | regcache_cooked_write_unsigned (regcache, regnum, val); | |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | ||
3344 | static enum return_value_convention | |
c055b101 CV |
3345 | ia64_return_value (struct gdbarch *gdbarch, struct type *func_type, |
3346 | struct type *valtype, struct regcache *regcache, | |
3347 | gdb_byte *readbuf, const gdb_byte *writebuf) | |
4c8b6ae0 UW |
3348 | { |
3349 | int struct_return = ia64_use_struct_convention (valtype); | |
3350 | ||
3351 | if (writebuf != NULL) | |
3352 | { | |
3353 | gdb_assert (!struct_return); | |
3354 | ia64_store_return_value (valtype, regcache, writebuf); | |
3355 | } | |
3356 | ||
3357 | if (readbuf != NULL) | |
3358 | { | |
3359 | gdb_assert (!struct_return); | |
3360 | ia64_extract_return_value (valtype, regcache, readbuf); | |
3361 | } | |
3362 | ||
3363 | if (struct_return) | |
3364 | return RETURN_VALUE_STRUCT_CONVENTION; | |
3365 | else | |
3366 | return RETURN_VALUE_REGISTER_CONVENTION; | |
3367 | } | |
16461d7d | 3368 | |
64a5b29c KB |
3369 | static int |
3370 | is_float_or_hfa_type_recurse (struct type *t, struct type **etp) | |
3371 | { | |
3372 | switch (TYPE_CODE (t)) | |
3373 | { | |
3374 | case TYPE_CODE_FLT: | |
3375 | if (*etp) | |
3376 | return TYPE_LENGTH (*etp) == TYPE_LENGTH (t); | |
3377 | else | |
3378 | { | |
3379 | *etp = t; | |
3380 | return 1; | |
3381 | } | |
3382 | break; | |
3383 | case TYPE_CODE_ARRAY: | |
98f96ba1 KB |
3384 | return |
3385 | is_float_or_hfa_type_recurse (check_typedef (TYPE_TARGET_TYPE (t)), | |
3386 | etp); | |
64a5b29c KB |
3387 | break; |
3388 | case TYPE_CODE_STRUCT: | |
3389 | { | |
3390 | int i; | |
3391 | ||
3392 | for (i = 0; i < TYPE_NFIELDS (t); i++) | |
98f96ba1 KB |
3393 | if (!is_float_or_hfa_type_recurse |
3394 | (check_typedef (TYPE_FIELD_TYPE (t, i)), etp)) | |
64a5b29c KB |
3395 | return 0; |
3396 | return 1; | |
3397 | } | |
3398 | break; | |
3399 | default: | |
3400 | return 0; | |
3401 | break; | |
3402 | } | |
3403 | } | |
3404 | ||
3405 | /* Determine if the given type is one of the floating point types or | |
3406 | and HFA (which is a struct, array, or combination thereof whose | |
004d836a | 3407 | bottom-most elements are all of the same floating point type). */ |
64a5b29c KB |
3408 | |
3409 | static struct type * | |
3410 | is_float_or_hfa_type (struct type *t) | |
3411 | { | |
3412 | struct type *et = 0; | |
3413 | ||
3414 | return is_float_or_hfa_type_recurse (t, &et) ? et : 0; | |
3415 | } | |
3416 | ||
3417 | ||
98f96ba1 KB |
3418 | /* Return 1 if the alignment of T is such that the next even slot |
3419 | should be used. Return 0, if the next available slot should | |
3420 | be used. (See section 8.5.1 of the IA-64 Software Conventions | |
004d836a | 3421 | and Runtime manual). */ |
98f96ba1 KB |
3422 | |
3423 | static int | |
3424 | slot_alignment_is_next_even (struct type *t) | |
3425 | { | |
3426 | switch (TYPE_CODE (t)) | |
3427 | { | |
3428 | case TYPE_CODE_INT: | |
3429 | case TYPE_CODE_FLT: | |
3430 | if (TYPE_LENGTH (t) > 8) | |
3431 | return 1; | |
3432 | else | |
3433 | return 0; | |
3434 | case TYPE_CODE_ARRAY: | |
3435 | return | |
3436 | slot_alignment_is_next_even (check_typedef (TYPE_TARGET_TYPE (t))); | |
3437 | case TYPE_CODE_STRUCT: | |
3438 | { | |
3439 | int i; | |
3440 | ||
3441 | for (i = 0; i < TYPE_NFIELDS (t); i++) | |
3442 | if (slot_alignment_is_next_even | |
3443 | (check_typedef (TYPE_FIELD_TYPE (t, i)))) | |
3444 | return 1; | |
3445 | return 0; | |
3446 | } | |
3447 | default: | |
3448 | return 0; | |
3449 | } | |
3450 | } | |
3451 | ||
64a5b29c KB |
3452 | /* Attempt to find (and return) the global pointer for the given |
3453 | function. | |
3454 | ||
3455 | This is a rather nasty bit of code searchs for the .dynamic section | |
3456 | in the objfile corresponding to the pc of the function we're trying | |
3457 | to call. Once it finds the addresses at which the .dynamic section | |
3458 | lives in the child process, it scans the Elf64_Dyn entries for a | |
3459 | DT_PLTGOT tag. If it finds one of these, the corresponding | |
3460 | d_un.d_ptr value is the global pointer. */ | |
3461 | ||
3462 | static CORE_ADDR | |
c4de7027 JB |
3463 | ia64_find_global_pointer_from_dynamic_section (struct gdbarch *gdbarch, |
3464 | CORE_ADDR faddr) | |
64a5b29c | 3465 | { |
e17a4113 | 3466 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
76d689a6 | 3467 | struct obj_section *faddr_sect; |
64a5b29c | 3468 | |
76d689a6 KB |
3469 | faddr_sect = find_pc_section (faddr); |
3470 | if (faddr_sect != NULL) | |
64a5b29c KB |
3471 | { |
3472 | struct obj_section *osect; | |
3473 | ||
76d689a6 | 3474 | ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect) |
64a5b29c KB |
3475 | { |
3476 | if (strcmp (osect->the_bfd_section->name, ".dynamic") == 0) | |
3477 | break; | |
3478 | } | |
3479 | ||
76d689a6 | 3480 | if (osect < faddr_sect->objfile->sections_end) |
64a5b29c | 3481 | { |
aded6f54 | 3482 | CORE_ADDR addr, endaddr; |
64a5b29c | 3483 | |
aded6f54 PA |
3484 | addr = obj_section_addr (osect); |
3485 | endaddr = obj_section_endaddr (osect); | |
3486 | ||
3487 | while (addr < endaddr) | |
64a5b29c KB |
3488 | { |
3489 | int status; | |
3490 | LONGEST tag; | |
3491 | char buf[8]; | |
3492 | ||
3493 | status = target_read_memory (addr, buf, sizeof (buf)); | |
3494 | if (status != 0) | |
3495 | break; | |
e17a4113 | 3496 | tag = extract_signed_integer (buf, sizeof (buf), byte_order); |
64a5b29c KB |
3497 | |
3498 | if (tag == DT_PLTGOT) | |
3499 | { | |
3500 | CORE_ADDR global_pointer; | |
3501 | ||
3502 | status = target_read_memory (addr + 8, buf, sizeof (buf)); | |
3503 | if (status != 0) | |
3504 | break; | |
e17a4113 UW |
3505 | global_pointer = extract_unsigned_integer (buf, sizeof (buf), |
3506 | byte_order); | |
64a5b29c | 3507 | |
1777feb0 | 3508 | /* The payoff... */ |
64a5b29c KB |
3509 | return global_pointer; |
3510 | } | |
3511 | ||
3512 | if (tag == DT_NULL) | |
3513 | break; | |
3514 | ||
3515 | addr += 16; | |
3516 | } | |
3517 | } | |
3518 | } | |
3519 | return 0; | |
3520 | } | |
3521 | ||
c4de7027 JB |
3522 | /* Attempt to find (and return) the global pointer for the given |
3523 | function. We first try the find_global_pointer_from_solib routine | |
3524 | from the gdbarch tdep vector, if provided. And if that does not | |
3525 | work, then we try ia64_find_global_pointer_from_dynamic_section. */ | |
3526 | ||
3527 | static CORE_ADDR | |
3528 | ia64_find_global_pointer (struct gdbarch *gdbarch, CORE_ADDR faddr) | |
3529 | { | |
3530 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
3531 | CORE_ADDR addr = 0; | |
3532 | ||
3533 | if (tdep->find_global_pointer_from_solib) | |
3534 | addr = tdep->find_global_pointer_from_solib (gdbarch, faddr); | |
3535 | if (addr == 0) | |
3536 | addr = ia64_find_global_pointer_from_dynamic_section (gdbarch, faddr); | |
3537 | return addr; | |
3538 | } | |
3539 | ||
64a5b29c KB |
3540 | /* Given a function's address, attempt to find (and return) the |
3541 | corresponding (canonical) function descriptor. Return 0 if | |
004d836a | 3542 | not found. */ |
64a5b29c | 3543 | static CORE_ADDR |
e17a4113 | 3544 | find_extant_func_descr (struct gdbarch *gdbarch, CORE_ADDR faddr) |
64a5b29c | 3545 | { |
e17a4113 | 3546 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
76d689a6 | 3547 | struct obj_section *faddr_sect; |
64a5b29c | 3548 | |
004d836a | 3549 | /* Return early if faddr is already a function descriptor. */ |
76d689a6 KB |
3550 | faddr_sect = find_pc_section (faddr); |
3551 | if (faddr_sect && strcmp (faddr_sect->the_bfd_section->name, ".opd") == 0) | |
64a5b29c KB |
3552 | return faddr; |
3553 | ||
76d689a6 | 3554 | if (faddr_sect != NULL) |
64a5b29c | 3555 | { |
76d689a6 KB |
3556 | struct obj_section *osect; |
3557 | ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect) | |
64a5b29c KB |
3558 | { |
3559 | if (strcmp (osect->the_bfd_section->name, ".opd") == 0) | |
3560 | break; | |
3561 | } | |
3562 | ||
76d689a6 | 3563 | if (osect < faddr_sect->objfile->sections_end) |
64a5b29c | 3564 | { |
aded6f54 PA |
3565 | CORE_ADDR addr, endaddr; |
3566 | ||
3567 | addr = obj_section_addr (osect); | |
3568 | endaddr = obj_section_endaddr (osect); | |
64a5b29c | 3569 | |
aded6f54 | 3570 | while (addr < endaddr) |
64a5b29c KB |
3571 | { |
3572 | int status; | |
3573 | LONGEST faddr2; | |
3574 | char buf[8]; | |
3575 | ||
3576 | status = target_read_memory (addr, buf, sizeof (buf)); | |
3577 | if (status != 0) | |
3578 | break; | |
e17a4113 | 3579 | faddr2 = extract_signed_integer (buf, sizeof (buf), byte_order); |
64a5b29c KB |
3580 | |
3581 | if (faddr == faddr2) | |
3582 | return addr; | |
3583 | ||
3584 | addr += 16; | |
3585 | } | |
3586 | } | |
3587 | } | |
3588 | return 0; | |
3589 | } | |
3590 | ||
3591 | /* Attempt to find a function descriptor corresponding to the | |
3592 | given address. If none is found, construct one on the | |
004d836a | 3593 | stack using the address at fdaptr. */ |
64a5b29c KB |
3594 | |
3595 | static CORE_ADDR | |
9c9acae0 | 3596 | find_func_descr (struct regcache *regcache, CORE_ADDR faddr, CORE_ADDR *fdaptr) |
64a5b29c | 3597 | { |
e17a4113 UW |
3598 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
3599 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
64a5b29c KB |
3600 | CORE_ADDR fdesc; |
3601 | ||
e17a4113 | 3602 | fdesc = find_extant_func_descr (gdbarch, faddr); |
64a5b29c KB |
3603 | |
3604 | if (fdesc == 0) | |
3605 | { | |
9c9acae0 | 3606 | ULONGEST global_pointer; |
64a5b29c KB |
3607 | char buf[16]; |
3608 | ||
3609 | fdesc = *fdaptr; | |
3610 | *fdaptr += 16; | |
3611 | ||
e17a4113 | 3612 | global_pointer = ia64_find_global_pointer (gdbarch, faddr); |
64a5b29c KB |
3613 | |
3614 | if (global_pointer == 0) | |
9c9acae0 UW |
3615 | regcache_cooked_read_unsigned (regcache, |
3616 | IA64_GR1_REGNUM, &global_pointer); | |
64a5b29c | 3617 | |
e17a4113 UW |
3618 | store_unsigned_integer (buf, 8, byte_order, faddr); |
3619 | store_unsigned_integer (buf + 8, 8, byte_order, global_pointer); | |
64a5b29c KB |
3620 | |
3621 | write_memory (fdesc, buf, 16); | |
3622 | } | |
3623 | ||
3624 | return fdesc; | |
3625 | } | |
16461d7d | 3626 | |
af8b88dd JJ |
3627 | /* Use the following routine when printing out function pointers |
3628 | so the user can see the function address rather than just the | |
3629 | function descriptor. */ | |
3630 | static CORE_ADDR | |
e2d0e7eb AC |
3631 | ia64_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, |
3632 | struct target_ops *targ) | |
af8b88dd | 3633 | { |
e17a4113 | 3634 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
af8b88dd | 3635 | struct obj_section *s; |
e453266f | 3636 | gdb_byte buf[8]; |
af8b88dd JJ |
3637 | |
3638 | s = find_pc_section (addr); | |
3639 | ||
3640 | /* check if ADDR points to a function descriptor. */ | |
3641 | if (s && strcmp (s->the_bfd_section->name, ".opd") == 0) | |
e17a4113 | 3642 | return read_memory_unsigned_integer (addr, 8, byte_order); |
af8b88dd | 3643 | |
fcac911a JB |
3644 | /* Normally, functions live inside a section that is executable. |
3645 | So, if ADDR points to a non-executable section, then treat it | |
3646 | as a function descriptor and return the target address iff | |
e453266f JK |
3647 | the target address itself points to a section that is executable. |
3648 | Check first the memory of the whole length of 8 bytes is readable. */ | |
3649 | if (s && (s->the_bfd_section->flags & SEC_CODE) == 0 | |
3650 | && target_read_memory (addr, buf, 8) == 0) | |
fcac911a | 3651 | { |
e453266f | 3652 | CORE_ADDR pc = extract_unsigned_integer (buf, 8, byte_order); |
fcac911a JB |
3653 | struct obj_section *pc_section = find_pc_section (pc); |
3654 | ||
3655 | if (pc_section && (pc_section->the_bfd_section->flags & SEC_CODE)) | |
3656 | return pc; | |
3657 | } | |
b1e6fd19 | 3658 | |
0d5de010 DJ |
3659 | /* There are also descriptors embedded in vtables. */ |
3660 | if (s) | |
3661 | { | |
3662 | struct minimal_symbol *minsym; | |
3663 | ||
3664 | minsym = lookup_minimal_symbol_by_pc (addr); | |
3665 | ||
3666 | if (minsym && is_vtable_name (SYMBOL_LINKAGE_NAME (minsym))) | |
e17a4113 | 3667 | return read_memory_unsigned_integer (addr, 8, byte_order); |
0d5de010 DJ |
3668 | } |
3669 | ||
af8b88dd JJ |
3670 | return addr; |
3671 | } | |
3672 | ||
a78f21af | 3673 | static CORE_ADDR |
004d836a JJ |
3674 | ia64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp) |
3675 | { | |
3676 | return sp & ~0xfLL; | |
3677 | } | |
3678 | ||
c4de7027 JB |
3679 | /* The default "allocate_new_rse_frame" ia64_infcall_ops routine for ia64. */ |
3680 | ||
3681 | static void | |
3682 | ia64_allocate_new_rse_frame (struct regcache *regcache, ULONGEST bsp, int sof) | |
3683 | { | |
3684 | ULONGEST cfm, pfs, new_bsp; | |
3685 | ||
3686 | regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm); | |
3687 | ||
3688 | new_bsp = rse_address_add (bsp, sof); | |
3689 | regcache_cooked_write_unsigned (regcache, IA64_BSP_REGNUM, new_bsp); | |
3690 | ||
3691 | regcache_cooked_read_unsigned (regcache, IA64_PFS_REGNUM, &pfs); | |
3692 | pfs &= 0xc000000000000000LL; | |
3693 | pfs |= (cfm & 0xffffffffffffLL); | |
3694 | regcache_cooked_write_unsigned (regcache, IA64_PFS_REGNUM, pfs); | |
3695 | ||
3696 | cfm &= 0xc000000000000000LL; | |
3697 | cfm |= sof; | |
3698 | regcache_cooked_write_unsigned (regcache, IA64_CFM_REGNUM, cfm); | |
3699 | } | |
3700 | ||
3701 | /* The default "store_argument_in_slot" ia64_infcall_ops routine for | |
3702 | ia64. */ | |
3703 | ||
3704 | static void | |
3705 | ia64_store_argument_in_slot (struct regcache *regcache, CORE_ADDR bsp, | |
3706 | int slotnum, gdb_byte *buf) | |
3707 | { | |
3708 | write_memory (rse_address_add (bsp, slotnum), buf, 8); | |
3709 | } | |
3710 | ||
3711 | /* The default "set_function_addr" ia64_infcall_ops routine for ia64. */ | |
3712 | ||
3713 | static void | |
3714 | ia64_set_function_addr (struct regcache *regcache, CORE_ADDR func_addr) | |
3715 | { | |
3716 | /* Nothing needed. */ | |
3717 | } | |
3718 | ||
004d836a | 3719 | static CORE_ADDR |
7d9b040b | 3720 | ia64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
8dd5115e AS |
3721 | struct regcache *regcache, CORE_ADDR bp_addr, |
3722 | int nargs, struct value **args, CORE_ADDR sp, | |
3723 | int struct_return, CORE_ADDR struct_addr) | |
16461d7d | 3724 | { |
c4de7027 | 3725 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
e17a4113 | 3726 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
16461d7d | 3727 | int argno; |
ea7c478f | 3728 | struct value *arg; |
16461d7d KB |
3729 | struct type *type; |
3730 | int len, argoffset; | |
64a5b29c | 3731 | int nslots, rseslots, memslots, slotnum, nfuncargs; |
16461d7d | 3732 | int floatreg; |
c4de7027 | 3733 | ULONGEST bsp; |
9c9acae0 | 3734 | CORE_ADDR funcdescaddr, pc, global_pointer; |
7d9b040b | 3735 | CORE_ADDR func_addr = find_function_addr (function, NULL); |
16461d7d KB |
3736 | |
3737 | nslots = 0; | |
64a5b29c | 3738 | nfuncargs = 0; |
004d836a | 3739 | /* Count the number of slots needed for the arguments. */ |
16461d7d KB |
3740 | for (argno = 0; argno < nargs; argno++) |
3741 | { | |
3742 | arg = args[argno]; | |
4991999e | 3743 | type = check_typedef (value_type (arg)); |
16461d7d KB |
3744 | len = TYPE_LENGTH (type); |
3745 | ||
98f96ba1 | 3746 | if ((nslots & 1) && slot_alignment_is_next_even (type)) |
16461d7d KB |
3747 | nslots++; |
3748 | ||
64a5b29c KB |
3749 | if (TYPE_CODE (type) == TYPE_CODE_FUNC) |
3750 | nfuncargs++; | |
3751 | ||
16461d7d KB |
3752 | nslots += (len + 7) / 8; |
3753 | } | |
3754 | ||
004d836a | 3755 | /* Divvy up the slots between the RSE and the memory stack. */ |
16461d7d KB |
3756 | rseslots = (nslots > 8) ? 8 : nslots; |
3757 | memslots = nslots - rseslots; | |
3758 | ||
004d836a | 3759 | /* Allocate a new RSE frame. */ |
9c9acae0 | 3760 | regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp); |
c4de7027 | 3761 | tdep->infcall_ops.allocate_new_rse_frame (regcache, bsp, rseslots); |
16461d7d | 3762 | |
64a5b29c KB |
3763 | /* We will attempt to find function descriptors in the .opd segment, |
3764 | but if we can't we'll construct them ourselves. That being the | |
004d836a | 3765 | case, we'll need to reserve space on the stack for them. */ |
64a5b29c KB |
3766 | funcdescaddr = sp - nfuncargs * 16; |
3767 | funcdescaddr &= ~0xfLL; | |
3768 | ||
3769 | /* Adjust the stack pointer to it's new value. The calling conventions | |
3770 | require us to have 16 bytes of scratch, plus whatever space is | |
004d836a | 3771 | necessary for the memory slots and our function descriptors. */ |
64a5b29c | 3772 | sp = sp - 16 - (memslots + nfuncargs) * 8; |
004d836a | 3773 | sp &= ~0xfLL; /* Maintain 16 byte alignment. */ |
16461d7d | 3774 | |
64a5b29c KB |
3775 | /* Place the arguments where they belong. The arguments will be |
3776 | either placed in the RSE backing store or on the memory stack. | |
3777 | In addition, floating point arguments or HFAs are placed in | |
004d836a | 3778 | floating point registers. */ |
16461d7d KB |
3779 | slotnum = 0; |
3780 | floatreg = IA64_FR8_REGNUM; | |
3781 | for (argno = 0; argno < nargs; argno++) | |
3782 | { | |
64a5b29c KB |
3783 | struct type *float_elt_type; |
3784 | ||
16461d7d | 3785 | arg = args[argno]; |
4991999e | 3786 | type = check_typedef (value_type (arg)); |
16461d7d | 3787 | len = TYPE_LENGTH (type); |
64a5b29c | 3788 | |
004d836a | 3789 | /* Special handling for function parameters. */ |
64a5b29c KB |
3790 | if (len == 8 |
3791 | && TYPE_CODE (type) == TYPE_CODE_PTR | |
3792 | && TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC) | |
3793 | { | |
3794 | char val_buf[8]; | |
e17a4113 UW |
3795 | ULONGEST faddr = extract_unsigned_integer (value_contents (arg), |
3796 | 8, byte_order); | |
3797 | store_unsigned_integer (val_buf, 8, byte_order, | |
9c9acae0 | 3798 | find_func_descr (regcache, faddr, |
fbd9dcd3 | 3799 | &funcdescaddr)); |
64a5b29c | 3800 | if (slotnum < rseslots) |
c4de7027 JB |
3801 | tdep->infcall_ops.store_argument_in_slot (regcache, bsp, |
3802 | slotnum, val_buf); | |
64a5b29c KB |
3803 | else |
3804 | write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8); | |
3805 | slotnum++; | |
3806 | continue; | |
3807 | } | |
3808 | ||
004d836a | 3809 | /* Normal slots. */ |
98f96ba1 KB |
3810 | |
3811 | /* Skip odd slot if necessary... */ | |
3812 | if ((slotnum & 1) && slot_alignment_is_next_even (type)) | |
16461d7d | 3813 | slotnum++; |
98f96ba1 | 3814 | |
16461d7d KB |
3815 | argoffset = 0; |
3816 | while (len > 0) | |
3817 | { | |
3818 | char val_buf[8]; | |
3819 | ||
3820 | memset (val_buf, 0, 8); | |
825d6d8a JB |
3821 | if (!ia64_struct_type_p (type) && len < 8) |
3822 | { | |
3823 | /* Integral types are LSB-aligned, so we have to be careful | |
3824 | to insert the argument on the correct side of the buffer. | |
3825 | This is why we use store_unsigned_integer. */ | |
3826 | store_unsigned_integer | |
3827 | (val_buf, 8, byte_order, | |
3828 | extract_unsigned_integer (value_contents (arg), len, | |
3829 | byte_order)); | |
3830 | } | |
3831 | else | |
3832 | { | |
3833 | /* This is either an 8bit integral type, or an aggregate. | |
3834 | For 8bit integral type, there is no problem, we just | |
3835 | copy the value over. | |
3836 | ||
3837 | For aggregates, the only potentially tricky portion | |
3838 | is to write the last one if it is less than 8 bytes. | |
3839 | In this case, the data is Byte0-aligned. Happy news, | |
3840 | this means that we don't need to differentiate the | |
3841 | handling of 8byte blocks and less-than-8bytes blocks. */ | |
3842 | memcpy (val_buf, value_contents (arg) + argoffset, | |
3843 | (len > 8) ? 8 : len); | |
3844 | } | |
16461d7d KB |
3845 | |
3846 | if (slotnum < rseslots) | |
c4de7027 JB |
3847 | tdep->infcall_ops.store_argument_in_slot (regcache, bsp, |
3848 | slotnum, val_buf); | |
16461d7d KB |
3849 | else |
3850 | write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8); | |
3851 | ||
3852 | argoffset += 8; | |
3853 | len -= 8; | |
3854 | slotnum++; | |
3855 | } | |
64a5b29c | 3856 | |
004d836a | 3857 | /* Handle floating point types (including HFAs). */ |
64a5b29c KB |
3858 | float_elt_type = is_float_or_hfa_type (type); |
3859 | if (float_elt_type != NULL) | |
3860 | { | |
3861 | argoffset = 0; | |
3862 | len = TYPE_LENGTH (type); | |
3863 | while (len > 0 && floatreg < IA64_FR16_REGNUM) | |
3864 | { | |
004d836a | 3865 | char to[MAX_REGISTER_SIZE]; |
1777feb0 MS |
3866 | convert_typed_floating (value_contents (arg) + argoffset, |
3867 | float_elt_type, to, | |
3868 | ia64_ext_type (gdbarch)); | |
004d836a | 3869 | regcache_cooked_write (regcache, floatreg, (void *)to); |
64a5b29c KB |
3870 | floatreg++; |
3871 | argoffset += TYPE_LENGTH (float_elt_type); | |
3872 | len -= TYPE_LENGTH (float_elt_type); | |
3873 | } | |
16461d7d KB |
3874 | } |
3875 | } | |
3876 | ||
004d836a | 3877 | /* Store the struct return value in r8 if necessary. */ |
16461d7d KB |
3878 | if (struct_return) |
3879 | { | |
1777feb0 MS |
3880 | regcache_cooked_write_unsigned (regcache, IA64_GR8_REGNUM, |
3881 | (ULONGEST) struct_addr); | |
16461d7d KB |
3882 | } |
3883 | ||
e17a4113 | 3884 | global_pointer = ia64_find_global_pointer (gdbarch, func_addr); |
8dd5115e | 3885 | |
004d836a | 3886 | if (global_pointer != 0) |
9c9acae0 | 3887 | regcache_cooked_write_unsigned (regcache, IA64_GR1_REGNUM, global_pointer); |
a59fe496 | 3888 | |
c4de7027 JB |
3889 | /* The following is not necessary on HP-UX, because we're using |
3890 | a dummy code sequence pushed on the stack to make the call, and | |
3891 | this sequence doesn't need b0 to be set in order for our dummy | |
3892 | breakpoint to be hit. Nonetheless, this doesn't interfere, and | |
3893 | it's needed for other OSes, so we do this unconditionaly. */ | |
9c9acae0 | 3894 | regcache_cooked_write_unsigned (regcache, IA64_BR0_REGNUM, bp_addr); |
16461d7d | 3895 | |
9c9acae0 | 3896 | regcache_cooked_write_unsigned (regcache, sp_regnum, sp); |
16461d7d | 3897 | |
c4de7027 JB |
3898 | tdep->infcall_ops.set_function_addr (regcache, func_addr); |
3899 | ||
16461d7d KB |
3900 | return sp; |
3901 | } | |
3902 | ||
c4de7027 JB |
3903 | static const struct ia64_infcall_ops ia64_infcall_ops = |
3904 | { | |
3905 | ia64_allocate_new_rse_frame, | |
3906 | ia64_store_argument_in_slot, | |
3907 | ia64_set_function_addr | |
3908 | }; | |
3909 | ||
004d836a | 3910 | static struct frame_id |
15c1e57f | 3911 | ia64_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
16461d7d | 3912 | { |
e17a4113 | 3913 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
004d836a | 3914 | char buf[8]; |
4afcc598 | 3915 | CORE_ADDR sp, bsp; |
004d836a | 3916 | |
15c1e57f | 3917 | get_frame_register (this_frame, sp_regnum, buf); |
e17a4113 | 3918 | sp = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 3919 | |
15c1e57f | 3920 | get_frame_register (this_frame, IA64_BSP_REGNUM, buf); |
e17a4113 | 3921 | bsp = extract_unsigned_integer (buf, 8, byte_order); |
4afcc598 JJ |
3922 | |
3923 | if (gdbarch_debug >= 1) | |
3924 | fprintf_unfiltered (gdb_stdlog, | |
5af949e3 UW |
3925 | "dummy frame id: code %s, stack %s, special %s\n", |
3926 | paddress (gdbarch, get_frame_pc (this_frame)), | |
3927 | paddress (gdbarch, sp), paddress (gdbarch, bsp)); | |
4afcc598 | 3928 | |
15c1e57f | 3929 | return frame_id_build_special (sp, get_frame_pc (this_frame), bsp); |
16461d7d KB |
3930 | } |
3931 | ||
004d836a JJ |
3932 | static CORE_ADDR |
3933 | ia64_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) | |
16461d7d | 3934 | { |
e17a4113 | 3935 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
004d836a JJ |
3936 | char buf[8]; |
3937 | CORE_ADDR ip, psr, pc; | |
3938 | ||
3939 | frame_unwind_register (next_frame, IA64_IP_REGNUM, buf); | |
e17a4113 | 3940 | ip = extract_unsigned_integer (buf, 8, byte_order); |
004d836a | 3941 | frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf); |
e17a4113 | 3942 | psr = extract_unsigned_integer (buf, 8, byte_order); |
004d836a JJ |
3943 | |
3944 | pc = (ip & ~0xf) | ((psr >> 41) & 3); | |
3945 | return pc; | |
16461d7d KB |
3946 | } |
3947 | ||
6926787d AS |
3948 | static int |
3949 | ia64_print_insn (bfd_vma memaddr, struct disassemble_info *info) | |
3950 | { | |
3951 | info->bytes_per_line = SLOT_MULTIPLIER; | |
3952 | return print_insn_ia64 (memaddr, info); | |
3953 | } | |
3954 | ||
77ca787b JB |
3955 | /* The default "size_of_register_frame" gdbarch_tdep routine for ia64. */ |
3956 | ||
3957 | static int | |
3958 | ia64_size_of_register_frame (struct frame_info *this_frame, ULONGEST cfm) | |
3959 | { | |
3960 | return (cfm & 0x7f); | |
3961 | } | |
3962 | ||
16461d7d KB |
3963 | static struct gdbarch * |
3964 | ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) | |
3965 | { | |
3966 | struct gdbarch *gdbarch; | |
244bc108 | 3967 | struct gdbarch_tdep *tdep; |
244bc108 | 3968 | |
85bf2b91 JJ |
3969 | /* If there is already a candidate, use it. */ |
3970 | arches = gdbarch_list_lookup_by_info (arches, &info); | |
3971 | if (arches != NULL) | |
3972 | return arches->gdbarch; | |
16461d7d | 3973 | |
924d6a4f | 3974 | tdep = xzalloc (sizeof (struct gdbarch_tdep)); |
244bc108 | 3975 | gdbarch = gdbarch_alloc (&info, tdep); |
244bc108 | 3976 | |
77ca787b JB |
3977 | tdep->size_of_register_frame = ia64_size_of_register_frame; |
3978 | ||
5439edaa AC |
3979 | /* According to the ia64 specs, instructions that store long double |
3980 | floats in memory use a long-double format different than that | |
3981 | used in the floating registers. The memory format matches the | |
3982 | x86 extended float format which is 80 bits. An OS may choose to | |
3983 | use this format (e.g. GNU/Linux) or choose to use a different | |
3984 | format for storing long doubles (e.g. HPUX). In the latter case, | |
3985 | the setting of the format may be moved/overridden in an | |
3986 | OS-specific tdep file. */ | |
8da61cc4 | 3987 | set_gdbarch_long_double_format (gdbarch, floatformats_i387_ext); |
32edc941 | 3988 | |
16461d7d KB |
3989 | set_gdbarch_short_bit (gdbarch, 16); |
3990 | set_gdbarch_int_bit (gdbarch, 32); | |
3991 | set_gdbarch_long_bit (gdbarch, 64); | |
3992 | set_gdbarch_long_long_bit (gdbarch, 64); | |
3993 | set_gdbarch_float_bit (gdbarch, 32); | |
3994 | set_gdbarch_double_bit (gdbarch, 64); | |
33c08150 | 3995 | set_gdbarch_long_double_bit (gdbarch, 128); |
16461d7d KB |
3996 | set_gdbarch_ptr_bit (gdbarch, 64); |
3997 | ||
004d836a | 3998 | set_gdbarch_num_regs (gdbarch, NUM_IA64_RAW_REGS); |
1777feb0 MS |
3999 | set_gdbarch_num_pseudo_regs (gdbarch, |
4000 | LAST_PSEUDO_REGNUM - FIRST_PSEUDO_REGNUM); | |
16461d7d | 4001 | set_gdbarch_sp_regnum (gdbarch, sp_regnum); |
698cb3f0 | 4002 | set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM); |
16461d7d KB |
4003 | |
4004 | set_gdbarch_register_name (gdbarch, ia64_register_name); | |
004d836a | 4005 | set_gdbarch_register_type (gdbarch, ia64_register_type); |
16461d7d | 4006 | |
004d836a JJ |
4007 | set_gdbarch_pseudo_register_read (gdbarch, ia64_pseudo_register_read); |
4008 | set_gdbarch_pseudo_register_write (gdbarch, ia64_pseudo_register_write); | |
4009 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, ia64_dwarf_reg_to_regnum); | |
4010 | set_gdbarch_register_reggroup_p (gdbarch, ia64_register_reggroup_p); | |
4011 | set_gdbarch_convert_register_p (gdbarch, ia64_convert_register_p); | |
4012 | set_gdbarch_register_to_value (gdbarch, ia64_register_to_value); | |
4013 | set_gdbarch_value_to_register (gdbarch, ia64_value_to_register); | |
16461d7d | 4014 | |
004d836a | 4015 | set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue); |
16461d7d | 4016 | |
4c8b6ae0 | 4017 | set_gdbarch_return_value (gdbarch, ia64_return_value); |
16461d7d | 4018 | |
1777feb0 MS |
4019 | set_gdbarch_memory_insert_breakpoint (gdbarch, |
4020 | ia64_memory_insert_breakpoint); | |
4021 | set_gdbarch_memory_remove_breakpoint (gdbarch, | |
4022 | ia64_memory_remove_breakpoint); | |
16461d7d KB |
4023 | set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc); |
4024 | set_gdbarch_read_pc (gdbarch, ia64_read_pc); | |
b33e8514 | 4025 | set_gdbarch_write_pc (gdbarch, ia64_write_pc); |
16461d7d KB |
4026 | |
4027 | /* Settings for calling functions in the inferior. */ | |
8dd5115e | 4028 | set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call); |
c4de7027 | 4029 | tdep->infcall_ops = ia64_infcall_ops; |
004d836a | 4030 | set_gdbarch_frame_align (gdbarch, ia64_frame_align); |
15c1e57f | 4031 | set_gdbarch_dummy_id (gdbarch, ia64_dummy_id); |
16461d7d | 4032 | |
004d836a | 4033 | set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc); |
968d1cb4 | 4034 | #ifdef HAVE_LIBUNWIND_IA64_H |
15c1e57f JB |
4035 | frame_unwind_append_unwinder (gdbarch, |
4036 | &ia64_libunwind_sigtramp_frame_unwind); | |
4037 | frame_unwind_append_unwinder (gdbarch, &ia64_libunwind_frame_unwind); | |
4038 | frame_unwind_append_unwinder (gdbarch, &ia64_sigtramp_frame_unwind); | |
968d1cb4 | 4039 | libunwind_frame_set_descr (gdbarch, &ia64_libunwind_descr); |
c5a27d9c | 4040 | #else |
15c1e57f | 4041 | frame_unwind_append_unwinder (gdbarch, &ia64_sigtramp_frame_unwind); |
968d1cb4 | 4042 | #endif |
15c1e57f | 4043 | frame_unwind_append_unwinder (gdbarch, &ia64_frame_unwind); |
004d836a | 4044 | frame_base_set_default (gdbarch, &ia64_frame_base); |
16461d7d KB |
4045 | |
4046 | /* Settings that should be unnecessary. */ | |
4047 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); | |
4048 | ||
6926787d | 4049 | set_gdbarch_print_insn (gdbarch, ia64_print_insn); |
1777feb0 MS |
4050 | set_gdbarch_convert_from_func_ptr_addr (gdbarch, |
4051 | ia64_convert_from_func_ptr_addr); | |
6926787d | 4052 | |
0d5de010 DJ |
4053 | /* The virtual table contains 16-byte descriptors, not pointers to |
4054 | descriptors. */ | |
4055 | set_gdbarch_vtable_function_descriptors (gdbarch, 1); | |
4056 | ||
b33e8514 AS |
4057 | /* Hook in ABI-specific overrides, if they have been registered. */ |
4058 | gdbarch_init_osabi (info, gdbarch); | |
4059 | ||
16461d7d KB |
4060 | return gdbarch; |
4061 | } | |
4062 | ||
a78f21af AC |
4063 | extern initialize_file_ftype _initialize_ia64_tdep; /* -Wmissing-prototypes */ |
4064 | ||
16461d7d KB |
4065 | void |
4066 | _initialize_ia64_tdep (void) | |
4067 | { | |
b33e8514 | 4068 | gdbarch_register (bfd_arch_ia64, ia64_gdbarch_init, NULL); |
16461d7d | 4069 | } |