1 /* GNU/Linux/IA64 specific low level interface, for the remote server for GDB.
2 Copyright (C) 1995-2020 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "linux-low.h"
26 /* Linux target op definitions for the IA64 architecture. */
28 class ia64_target
: public linux_process_target
32 const regs_info
*get_regs_info () override
;
36 void low_arch_setup () override
;
39 /* The singleton target ops object. */
41 static ia64_target the_ia64_target
;
43 /* Defined in auto-generated file reg-ia64.c. */
44 void init_registers_ia64 (void);
45 extern const struct target_desc
*tdesc_ia64
;
47 #define ia64_num_regs 462
49 #include <asm/ptrace_offsets.h>
51 static int ia64_regmap
[] =
53 /* general registers */
54 -1, /* gr0 not available; i.e, it's always zero */
86 /* gr32 through gr127 not directly available via the ptrace interface */
87 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
88 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
89 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
90 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
91 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
92 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
93 /* Floating point registers */
94 -1, -1, /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */
221 /* predicate registers - we don't fetch these individually */
222 -1, -1, -1, -1, -1, -1, -1, -1,
223 -1, -1, -1, -1, -1, -1, -1, -1,
224 -1, -1, -1, -1, -1, -1, -1, -1,
225 -1, -1, -1, -1, -1, -1, -1, -1,
226 -1, -1, -1, -1, -1, -1, -1, -1,
227 -1, -1, -1, -1, -1, -1, -1, -1,
228 -1, -1, -1, -1, -1, -1, -1, -1,
229 -1, -1, -1, -1, -1, -1, -1, -1,
230 /* branch registers */
239 /* virtual frame pointer and virtual return address pointer */
241 /* other registers */
244 PT_CR_IPSR
, /* psr */
246 /* kernel registers not visible via ptrace interface (?) */
247 -1, -1, -1, -1, -1, -1, -1, -1,
249 -1, -1, -1, -1, -1, -1, -1, -1,
255 -1, /* Not available: FCR, IA32 floating control register */
257 -1, /* Not available: EFLAG */
258 -1, /* Not available: CSD */
259 -1, /* Not available: SSD */
260 -1, /* Not available: CFLG */
261 -1, /* Not available: FSR */
262 -1, /* Not available: FIR */
263 -1, /* Not available: FDR */
271 -1, /* Not available: ITC */
272 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
273 -1, -1, -1, -1, -1, -1, -1, -1, -1,
277 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
278 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
279 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
280 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
281 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
282 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
287 ia64_cannot_store_register (int regno
)
293 ia64_cannot_fetch_register (int regno
)
298 /* GDB register numbers. */
299 #define IA64_GR0_REGNUM 0
300 #define IA64_FR0_REGNUM 128
301 #define IA64_FR1_REGNUM 129
304 ia64_fetch_register (struct regcache
*regcache
, int regnum
)
306 /* r0 cannot be fetched but is always zero. */
307 if (regnum
== IA64_GR0_REGNUM
)
309 const gdb_byte zero
[8] = { 0 };
311 gdb_assert (sizeof (zero
) == register_size (regcache
->tdesc
, regnum
));
312 supply_register (regcache
, regnum
, zero
);
316 /* fr0 cannot be fetched but is always zero. */
317 if (regnum
== IA64_FR0_REGNUM
)
319 const gdb_byte f_zero
[16] = { 0 };
321 gdb_assert (sizeof (f_zero
) == register_size (regcache
->tdesc
, regnum
));
322 supply_register (regcache
, regnum
, f_zero
);
326 /* fr1 cannot be fetched but is always one (1.0). */
327 if (regnum
== IA64_FR1_REGNUM
)
329 const gdb_byte f_one
[16] =
330 { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 };
332 gdb_assert (sizeof (f_one
) == register_size (regcache
->tdesc
, regnum
));
333 supply_register (regcache
, regnum
, f_one
);
340 static struct usrregs_info ia64_usrregs_info
=
346 static struct regs_info myregs_info
=
348 NULL
, /* regset_bitmap */
353 ia64_target::get_regs_info ()
359 ia64_target::low_arch_setup ()
361 current_process ()->tdesc
= tdesc_ia64
;
365 struct linux_target_ops the_low_target
= {
366 ia64_cannot_fetch_register
,
367 ia64_cannot_store_register
,
371 /* The linux target ops object. */
373 linux_process_target
*the_linux_target
= &the_ia64_target
;
376 initialize_low_arch (void)
378 init_registers_ia64 ();