1 /* Functions specific to running gdb native on HPPA running Linux.
2 Copyright 2004 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 2 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, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
27 #include <sys/procfs.h>
28 #include <sys/ptrace.h>
30 #include <asm/offsets.h>
32 #include "hppa-tdep.h"
34 /* Prototypes for supply_gregset etc. */
37 /* These must match the order of the register names.
39 Some sort of lookup table is needed because the offsets associated
40 with the registers are all over the board. */
42 static const int u_offsets[] =
44 /* general registers */
113 /* Floating point regs. */
124 PT_FR10, PT_FR10 + 4,
125 PT_FR11, PT_FR11 + 4,
126 PT_FR12, PT_FR12 + 4,
127 PT_FR13, PT_FR13 + 4,
128 PT_FR14, PT_FR14 + 4,
129 PT_FR15, PT_FR15 + 4,
130 PT_FR16, PT_FR16 + 4,
131 PT_FR17, PT_FR17 + 4,
132 PT_FR18, PT_FR18 + 4,
133 PT_FR19, PT_FR19 + 4,
134 PT_FR20, PT_FR20 + 4,
135 PT_FR21, PT_FR21 + 4,
136 PT_FR22, PT_FR22 + 4,
137 PT_FR23, PT_FR23 + 4,
138 PT_FR24, PT_FR24 + 4,
139 PT_FR25, PT_FR25 + 4,
140 PT_FR26, PT_FR26 + 4,
141 PT_FR27, PT_FR27 + 4,
142 PT_FR28, PT_FR28 + 4,
143 PT_FR29, PT_FR29 + 4,
144 PT_FR30, PT_FR30 + 4,
145 PT_FR31, PT_FR31 + 4,
149 register_addr (int regno, CORE_ADDR blockend)
153 if ((unsigned) regno >= NUM_REGS)
154 error ("Invalid register number %d.", regno);
156 if (u_offsets[regno] == -1)
160 addr = (CORE_ADDR) u_offsets[regno];
167 * Registers saved in a coredump:
172 * sar, iir, isr, ior, ipsw
177 #define GR_REGNUM(_n) (HPPA_R0_REGNUM+_n)
178 #define TR_REGNUM(_n) (HPPA_TR0_REGNUM+_n)
179 static const int greg_map[] =
181 GR_REGNUM(0), GR_REGNUM(1), GR_REGNUM(2), GR_REGNUM(3),
182 GR_REGNUM(4), GR_REGNUM(5), GR_REGNUM(6), GR_REGNUM(7),
183 GR_REGNUM(8), GR_REGNUM(9), GR_REGNUM(10), GR_REGNUM(11),
184 GR_REGNUM(12), GR_REGNUM(13), GR_REGNUM(14), GR_REGNUM(15),
185 GR_REGNUM(16), GR_REGNUM(17), GR_REGNUM(18), GR_REGNUM(19),
186 GR_REGNUM(20), GR_REGNUM(21), GR_REGNUM(22), GR_REGNUM(23),
187 GR_REGNUM(24), GR_REGNUM(25), GR_REGNUM(26), GR_REGNUM(27),
188 GR_REGNUM(28), GR_REGNUM(29), GR_REGNUM(30), GR_REGNUM(31),
190 HPPA_SR4_REGNUM+1, HPPA_SR4_REGNUM+2, HPPA_SR4_REGNUM+3, HPPA_SR4_REGNUM+4,
191 HPPA_SR4_REGNUM, HPPA_SR4_REGNUM+5, HPPA_SR4_REGNUM+6, HPPA_SR4_REGNUM+7,
193 HPPA_PCOQ_HEAD_REGNUM, HPPA_PCOQ_TAIL_REGNUM,
194 HPPA_PCSQ_HEAD_REGNUM, HPPA_PCSQ_TAIL_REGNUM,
196 HPPA_SAR_REGNUM, HPPA_IIR_REGNUM, HPPA_ISR_REGNUM, HPPA_IOR_REGNUM,
197 HPPA_IPSW_REGNUM, HPPA_RCR_REGNUM,
199 TR_REGNUM(0), TR_REGNUM(1), TR_REGNUM(2), TR_REGNUM(3),
200 TR_REGNUM(4), TR_REGNUM(5), TR_REGNUM(6), TR_REGNUM(7),
202 HPPA_PID0_REGNUM, HPPA_PID1_REGNUM, HPPA_PID2_REGNUM, HPPA_PID3_REGNUM,
203 HPPA_CCR_REGNUM, HPPA_EIEM_REGNUM,
208 /* Fetch one register. */
211 fetch_register (int regno)
216 if (CANNOT_FETCH_REGISTER (regno))
218 supply_register (regno, NULL);
222 /* GNU/Linux LWP ID's are process ID's. */
223 tid = TIDGET (inferior_ptid);
225 tid = PIDGET (inferior_ptid); /* Not a threaded program. */
228 val = ptrace (PTRACE_PEEKUSER, tid, register_addr (regno, 0), 0);
230 error ("Couldn't read register %s (#%d): %s.", REGISTER_NAME (regno),
231 regno, safe_strerror (errno));
233 regcache_raw_supply (current_regcache, regno, &val);
236 /* Store one register. */
239 store_register (int regno)
244 if (CANNOT_STORE_REGISTER (regno))
247 /* GNU/Linux LWP ID's are process ID's. */
248 tid = TIDGET (inferior_ptid);
250 tid = PIDGET (inferior_ptid); /* Not a threaded program. */
253 regcache_raw_collect (current_regcache, regno, &val);
254 ptrace (PTRACE_POKEUSER, tid, register_addr (regno, 0), val);
256 error ("Couldn't write register %s (#%d): %s.", REGISTER_NAME (regno),
257 regno, safe_strerror (errno));
260 /* Fetch registers from the child process. Fetch all registers if
261 regno == -1, otherwise fetch all general registers or all floating
262 point registers depending upon the value of regno. */
265 fetch_inferior_registers (int regno)
269 for (regno = 0; regno < NUM_REGS; regno++)
270 fetch_register (regno);
274 fetch_register (regno);
278 /* Store registers back into the inferior. Store all registers if
279 regno == -1, otherwise store all general registers or all floating
280 point registers depending upon the value of regno. */
283 store_inferior_registers (int regno)
287 for (regno = 0; regno < NUM_REGS; regno++)
288 store_register (regno);
292 store_register (regno);
296 /* Fill GDB's register array with the general-purpose register values
300 supply_gregset (gdb_gregset_t *gregsetp)
303 greg_t *regp = (elf_greg_t *) gregsetp;
305 for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++, regp++)
307 int regno = greg_map[i];
308 supply_register (regno, regp);
312 /* Fill register regno (if it is a general-purpose register) in
313 *gregsetp with the appropriate value from GDB's register array.
314 If regno is -1, do this for all registers. */
317 fill_gregset (gdb_gregset_t *gregsetp, int regno)
321 for (i = 0; i < sizeof (greg_map) / sizeof (greg_map[0]); i++)
323 int mregno = greg_map[i];
325 if (regno == -1 || regno == mregno)
327 regcache_collect(mregno, &(*gregsetp)[i]);
332 /* Given a pointer to a floating point register set in /proc format
333 (fpregset_t *), unpack the register contents and supply them as gdb's
334 idea of the current floating point register values. */
337 supply_fpregset (gdb_fpregset_t *fpregsetp)
342 for (regi = 0; regi <= 31; regi++)
344 from = (char *) &((*fpregsetp)[regi]);
345 supply_register (2*regi + HPPA_FP0_REGNUM, from);
346 supply_register (2*regi + HPPA_FP0_REGNUM + 1, from + 4);
350 /* Given a pointer to a floating point register set in /proc format
351 (fpregset_t *), update the register specified by REGNO from gdb's idea
352 of the current floating point register set. If REGNO is -1, update
356 fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
360 for (i = HPPA_FP0_REGNUM; i < HPPA_FP0_REGNUM + 32 * 2; i++)
362 /* Gross. fpregset_t is double, registers[x] has single
364 char *to = (char *) &((*fpregsetp)[(i - HPPA_FP0_REGNUM) / 2]);
365 if ((i - HPPA_FP0_REGNUM) & 1)
367 regcache_collect (i, to);