1 /* Functions specific to running GDB native on HPPA running GNU/Linux.
3 Copyright 2004 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include "gdb_string.h"
28 #include <sys/procfs.h>
29 #include <sys/ptrace.h>
30 #include <linux/version.h>
32 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,43)
33 #include <asm/offset.h>
35 #include <asm/offsets.h>
38 #include "hppa-tdep.h"
40 /* Prototypes for supply_gregset etc. */
43 /* These must match the order of the register names.
45 Some sort of lookup table is needed because the offsets associated
46 with the registers are all over the board. */
48 static const int u_offsets
[] =
50 /* general registers */
119 /* Floating point regs. */
130 PT_FR10
, PT_FR10
+ 4,
131 PT_FR11
, PT_FR11
+ 4,
132 PT_FR12
, PT_FR12
+ 4,
133 PT_FR13
, PT_FR13
+ 4,
134 PT_FR14
, PT_FR14
+ 4,
135 PT_FR15
, PT_FR15
+ 4,
136 PT_FR16
, PT_FR16
+ 4,
137 PT_FR17
, PT_FR17
+ 4,
138 PT_FR18
, PT_FR18
+ 4,
139 PT_FR19
, PT_FR19
+ 4,
140 PT_FR20
, PT_FR20
+ 4,
141 PT_FR21
, PT_FR21
+ 4,
142 PT_FR22
, PT_FR22
+ 4,
143 PT_FR23
, PT_FR23
+ 4,
144 PT_FR24
, PT_FR24
+ 4,
145 PT_FR25
, PT_FR25
+ 4,
146 PT_FR26
, PT_FR26
+ 4,
147 PT_FR27
, PT_FR27
+ 4,
148 PT_FR28
, PT_FR28
+ 4,
149 PT_FR29
, PT_FR29
+ 4,
150 PT_FR30
, PT_FR30
+ 4,
151 PT_FR31
, PT_FR31
+ 4,
155 register_addr (int regno
, CORE_ADDR blockend
)
159 if ((unsigned) regno
>= NUM_REGS
)
160 error ("Invalid register number %d.", regno
);
162 if (u_offsets
[regno
] == -1)
166 addr
= (CORE_ADDR
) u_offsets
[regno
];
173 * Registers saved in a coredump:
178 * sar, iir, isr, ior, ipsw
183 #define GR_REGNUM(_n) (HPPA_R0_REGNUM+_n)
184 #define TR_REGNUM(_n) (HPPA_TR0_REGNUM+_n)
185 static const int greg_map
[] =
187 GR_REGNUM(0), GR_REGNUM(1), GR_REGNUM(2), GR_REGNUM(3),
188 GR_REGNUM(4), GR_REGNUM(5), GR_REGNUM(6), GR_REGNUM(7),
189 GR_REGNUM(8), GR_REGNUM(9), GR_REGNUM(10), GR_REGNUM(11),
190 GR_REGNUM(12), GR_REGNUM(13), GR_REGNUM(14), GR_REGNUM(15),
191 GR_REGNUM(16), GR_REGNUM(17), GR_REGNUM(18), GR_REGNUM(19),
192 GR_REGNUM(20), GR_REGNUM(21), GR_REGNUM(22), GR_REGNUM(23),
193 GR_REGNUM(24), GR_REGNUM(25), GR_REGNUM(26), GR_REGNUM(27),
194 GR_REGNUM(28), GR_REGNUM(29), GR_REGNUM(30), GR_REGNUM(31),
196 HPPA_SR4_REGNUM
+1, HPPA_SR4_REGNUM
+2, HPPA_SR4_REGNUM
+3, HPPA_SR4_REGNUM
+4,
197 HPPA_SR4_REGNUM
, HPPA_SR4_REGNUM
+5, HPPA_SR4_REGNUM
+6, HPPA_SR4_REGNUM
+7,
199 HPPA_PCOQ_HEAD_REGNUM
, HPPA_PCOQ_TAIL_REGNUM
,
200 HPPA_PCSQ_HEAD_REGNUM
, HPPA_PCSQ_TAIL_REGNUM
,
202 HPPA_SAR_REGNUM
, HPPA_IIR_REGNUM
, HPPA_ISR_REGNUM
, HPPA_IOR_REGNUM
,
203 HPPA_IPSW_REGNUM
, HPPA_RCR_REGNUM
,
205 TR_REGNUM(0), TR_REGNUM(1), TR_REGNUM(2), TR_REGNUM(3),
206 TR_REGNUM(4), TR_REGNUM(5), TR_REGNUM(6), TR_REGNUM(7),
208 HPPA_PID0_REGNUM
, HPPA_PID1_REGNUM
, HPPA_PID2_REGNUM
, HPPA_PID3_REGNUM
,
209 HPPA_CCR_REGNUM
, HPPA_EIEM_REGNUM
,
214 /* Fetch one register. */
217 fetch_register (int regno
)
222 if (CANNOT_FETCH_REGISTER (regno
))
224 regcache_raw_supply (current_regcache
, regno
, NULL
);
228 /* GNU/Linux LWP ID's are process ID's. */
229 tid
= TIDGET (inferior_ptid
);
231 tid
= PIDGET (inferior_ptid
); /* Not a threaded program. */
234 val
= ptrace (PTRACE_PEEKUSER
, tid
, register_addr (regno
, 0), 0);
236 error ("Couldn't read register %s (#%d): %s.", REGISTER_NAME (regno
),
237 regno
, safe_strerror (errno
));
239 regcache_raw_supply (current_regcache
, regno
, &val
);
242 /* Store one register. */
245 store_register (int regno
)
250 if (CANNOT_STORE_REGISTER (regno
))
253 /* GNU/Linux LWP ID's are process ID's. */
254 tid
= TIDGET (inferior_ptid
);
256 tid
= PIDGET (inferior_ptid
); /* Not a threaded program. */
259 regcache_raw_collect (current_regcache
, regno
, &val
);
260 ptrace (PTRACE_POKEUSER
, tid
, register_addr (regno
, 0), val
);
262 error ("Couldn't write register %s (#%d): %s.", REGISTER_NAME (regno
),
263 regno
, safe_strerror (errno
));
266 /* Fetch registers from the child process. Fetch all registers if
267 regno == -1, otherwise fetch all general registers or all floating
268 point registers depending upon the value of regno. */
271 fetch_inferior_registers (int regno
)
275 for (regno
= 0; regno
< NUM_REGS
; regno
++)
276 fetch_register (regno
);
280 fetch_register (regno
);
284 /* Store registers back into the inferior. Store all registers if
285 regno == -1, otherwise store all general registers or all floating
286 point registers depending upon the value of regno. */
289 store_inferior_registers (int regno
)
293 for (regno
= 0; regno
< NUM_REGS
; regno
++)
294 store_register (regno
);
298 store_register (regno
);
302 /* Fill GDB's register array with the general-purpose register values
306 supply_gregset (gdb_gregset_t
*gregsetp
)
309 greg_t
*regp
= (elf_greg_t
*) gregsetp
;
311 for (i
= 0; i
< sizeof (greg_map
) / sizeof (greg_map
[0]); i
++, regp
++)
313 int regno
= greg_map
[i
];
314 regcache_raw_supply (current_regcache
, regno
, regp
);
318 /* Fill register regno (if it is a general-purpose register) in
319 *gregsetp with the appropriate value from GDB's register array.
320 If regno is -1, do this for all registers. */
323 fill_gregset (gdb_gregset_t
*gregsetp
, int regno
)
327 for (i
= 0; i
< sizeof (greg_map
) / sizeof (greg_map
[0]); i
++)
329 int mregno
= greg_map
[i
];
331 if (regno
== -1 || regno
== mregno
)
333 regcache_raw_collect(current_regcache
, mregno
, &(*gregsetp
)[i
]);
338 /* Given a pointer to a floating point register set in /proc format
339 (fpregset_t *), unpack the register contents and supply them as gdb's
340 idea of the current floating point register values. */
343 supply_fpregset (gdb_fpregset_t
*fpregsetp
)
348 for (regi
= 0; regi
<= 31; regi
++)
350 from
= (char *) &((*fpregsetp
)[regi
]);
351 regcache_raw_supply (current_regcache
, 2*regi
+ HPPA_FP0_REGNUM
, from
);
352 regcache_raw_supply (current_regcache
, 2*regi
+ HPPA_FP0_REGNUM
+ 1,
357 /* Given a pointer to a floating point register set in /proc format
358 (fpregset_t *), update the register specified by REGNO from gdb's idea
359 of the current floating point register set. If REGNO is -1, update
363 fill_fpregset (gdb_fpregset_t
*fpregsetp
, int regno
)
367 for (i
= HPPA_FP0_REGNUM
; i
< HPPA_FP0_REGNUM
+ 32 * 2; i
++)
369 /* Gross. fpregset_t is double, registers[x] has single
371 char *to
= (char *) &((*fpregsetp
)[(i
- HPPA_FP0_REGNUM
) / 2]);
372 if ((i
- HPPA_FP0_REGNUM
) & 1)
374 regcache_raw_collect (current_regcache
, i
, to
);
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