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
;
34 const gdb_byte
*sw_breakpoint_from_kind (int kind
, int *size
) override
;
38 void low_arch_setup () override
;
40 bool low_cannot_fetch_register (int regno
) override
;
42 bool low_cannot_store_register (int regno
) override
;
44 bool low_fetch_register (regcache
*regcache
, int regno
) override
;
47 /* The singleton target ops object. */
49 static ia64_target the_ia64_target
;
52 ia64_target::sw_breakpoint_from_kind (int kind
, int *size
)
54 gdb_assert_no_reached ("target op sw_breakpoint_from_kind is not "
55 "implemented by this target");
58 /* Defined in auto-generated file reg-ia64.c. */
59 void init_registers_ia64 (void);
60 extern const struct target_desc
*tdesc_ia64
;
62 #define ia64_num_regs 462
64 #include <asm/ptrace_offsets.h>
66 static int ia64_regmap
[] =
68 /* general registers */
69 -1, /* gr0 not available; i.e, it's always zero */
101 /* gr32 through gr127 not directly available via the ptrace interface */
102 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
103 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
104 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
105 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
106 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
107 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
108 /* Floating point registers */
109 -1, -1, /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */
236 /* predicate registers - we don't fetch these individually */
237 -1, -1, -1, -1, -1, -1, -1, -1,
238 -1, -1, -1, -1, -1, -1, -1, -1,
239 -1, -1, -1, -1, -1, -1, -1, -1,
240 -1, -1, -1, -1, -1, -1, -1, -1,
241 -1, -1, -1, -1, -1, -1, -1, -1,
242 -1, -1, -1, -1, -1, -1, -1, -1,
243 -1, -1, -1, -1, -1, -1, -1, -1,
244 -1, -1, -1, -1, -1, -1, -1, -1,
245 /* branch registers */
254 /* virtual frame pointer and virtual return address pointer */
256 /* other registers */
259 PT_CR_IPSR
, /* psr */
261 /* kernel registers not visible via ptrace interface (?) */
262 -1, -1, -1, -1, -1, -1, -1, -1,
264 -1, -1, -1, -1, -1, -1, -1, -1,
270 -1, /* Not available: FCR, IA32 floating control register */
272 -1, /* Not available: EFLAG */
273 -1, /* Not available: CSD */
274 -1, /* Not available: SSD */
275 -1, /* Not available: CFLG */
276 -1, /* Not available: FSR */
277 -1, /* Not available: FIR */
278 -1, /* Not available: FDR */
286 -1, /* Not available: ITC */
287 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
288 -1, -1, -1, -1, -1, -1, -1, -1, -1,
292 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
293 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
294 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
295 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
296 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
297 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
302 ia64_target::low_cannot_store_register (int regno
)
308 ia64_target::low_cannot_fetch_register (int regno
)
313 /* GDB register numbers. */
314 #define IA64_GR0_REGNUM 0
315 #define IA64_FR0_REGNUM 128
316 #define IA64_FR1_REGNUM 129
319 ia64_target::low_fetch_register (regcache
*regcache
, int regnum
)
321 /* r0 cannot be fetched but is always zero. */
322 if (regnum
== IA64_GR0_REGNUM
)
324 const gdb_byte zero
[8] = { 0 };
326 gdb_assert (sizeof (zero
) == register_size (regcache
->tdesc
, regnum
));
327 supply_register (regcache
, regnum
, zero
);
331 /* fr0 cannot be fetched but is always zero. */
332 if (regnum
== IA64_FR0_REGNUM
)
334 const gdb_byte f_zero
[16] = { 0 };
336 gdb_assert (sizeof (f_zero
) == register_size (regcache
->tdesc
, regnum
));
337 supply_register (regcache
, regnum
, f_zero
);
341 /* fr1 cannot be fetched but is always one (1.0). */
342 if (regnum
== IA64_FR1_REGNUM
)
344 const gdb_byte f_one
[16] =
345 { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 };
347 gdb_assert (sizeof (f_one
) == register_size (regcache
->tdesc
, regnum
));
348 supply_register (regcache
, regnum
, f_one
);
355 static struct usrregs_info ia64_usrregs_info
=
361 static struct regs_info myregs_info
=
363 NULL
, /* regset_bitmap */
368 ia64_target::get_regs_info ()
374 ia64_target::low_arch_setup ()
376 current_process ()->tdesc
= tdesc_ia64
;
380 struct linux_target_ops the_low_target
= {
383 /* The linux target ops object. */
385 linux_process_target
*the_linux_target
= &the_ia64_target
;
388 initialize_low_arch (void)
390 init_registers_ia64 ();