Commit | Line | Data |
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ed9a39eb | 1 | /* GNU/Linux on ARM native support. |
6aba47ca | 2 | Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007 |
10d6c8cd | 3 | Free Software Foundation, Inc. |
ed9a39eb JM |
4 | |
5 | This file is part of GDB. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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 | |
197e01b6 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
ed9a39eb JM |
21 | |
22 | #include "defs.h" | |
23 | #include "inferior.h" | |
24 | #include "gdbcore.h" | |
25 | #include "gdb_string.h" | |
4e052eda | 26 | #include "regcache.h" |
10d6c8cd DJ |
27 | #include "target.h" |
28 | #include "linux-nat.h" | |
05a4558a DJ |
29 | #include "target-descriptions.h" |
30 | #include "xml-support.h" | |
ed9a39eb | 31 | |
aeb98c60 | 32 | #include "arm-tdep.h" |
cb587d83 | 33 | #include "arm-linux-tdep.h" |
aeb98c60 | 34 | |
ed9a39eb JM |
35 | #include <sys/user.h> |
36 | #include <sys/ptrace.h> | |
37 | #include <sys/utsname.h> | |
41c49b06 | 38 | #include <sys/procfs.h> |
ed9a39eb | 39 | |
c60c0f5f MS |
40 | /* Prototypes for supply_gregset etc. */ |
41 | #include "gregset.h" | |
42 | ||
9308fc88 DJ |
43 | /* Defines ps_err_e, struct ps_prochandle. */ |
44 | #include "gdb_proc_service.h" | |
45 | ||
46 | #ifndef PTRACE_GET_THREAD_AREA | |
47 | #define PTRACE_GET_THREAD_AREA 22 | |
48 | #endif | |
49 | ||
05a4558a DJ |
50 | #ifndef PTRACE_GETWMMXREGS |
51 | #define PTRACE_GETWMMXREGS 18 | |
52 | #define PTRACE_SETWMMXREGS 19 | |
53 | #endif | |
54 | ||
55 | /* A flag for whether the WMMX registers are available. */ | |
56 | static int arm_linux_has_wmmx_registers; | |
57 | ||
ed9a39eb JM |
58 | extern int arm_apcs_32; |
59 | ||
ed9a39eb | 60 | /* The following variables are used to determine the version of the |
fdf39c9a | 61 | underlying GNU/Linux operating system. Examples: |
ed9a39eb | 62 | |
fdf39c9a | 63 | GNU/Linux 2.0.35 GNU/Linux 2.2.12 |
ed9a39eb JM |
64 | os_version = 0x00020023 os_version = 0x0002020c |
65 | os_major = 2 os_major = 2 | |
66 | os_minor = 0 os_minor = 2 | |
67 | os_release = 35 os_release = 12 | |
68 | ||
69 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release | |
70 | ||
71 | These are initialized using get_linux_version() from | |
72 | _initialize_arm_linux_nat(). */ | |
73 | ||
74 | static unsigned int os_version, os_major, os_minor, os_release; | |
75 | ||
fdf39c9a | 76 | /* On GNU/Linux, threads are implemented as pseudo-processes, in which |
41c49b06 | 77 | case we may be tracing more than one process at a time. In that |
39f77062 | 78 | case, inferior_ptid will contain the main process ID and the |
fdf39c9a RE |
79 | individual thread (process) ID. get_thread_id () is used to get |
80 | the thread id if it's available, and the process id otherwise. */ | |
41c49b06 SB |
81 | |
82 | int | |
39f77062 | 83 | get_thread_id (ptid_t ptid) |
41c49b06 | 84 | { |
39f77062 KB |
85 | int tid = TIDGET (ptid); |
86 | if (0 == tid) | |
87 | tid = PIDGET (ptid); | |
41c49b06 SB |
88 | return tid; |
89 | } | |
05a4558a | 90 | #define GET_THREAD_ID(PTID) get_thread_id (PTID) |
41c49b06 | 91 | |
41c49b06 | 92 | /* Get the value of a particular register from the floating point |
c6b92abd | 93 | state of the process and store it into regcache. */ |
41c49b06 SB |
94 | |
95 | static void | |
56be3814 | 96 | fetch_fpregister (struct regcache *regcache, int regno) |
41c49b06 SB |
97 | { |
98 | int ret, tid; | |
cb587d83 | 99 | gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE]; |
41c49b06 SB |
100 | |
101 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 102 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
103 | |
104 | /* Read the floating point state. */ | |
cb587d83 | 105 | ret = ptrace (PT_GETFPREGS, tid, 0, fp); |
41c49b06 SB |
106 | if (ret < 0) |
107 | { | |
edefbb7c | 108 | warning (_("Unable to fetch floating point register.")); |
41c49b06 SB |
109 | return; |
110 | } | |
111 | ||
112 | /* Fetch fpsr. */ | |
34e8f22d | 113 | if (ARM_FPS_REGNUM == regno) |
56be3814 | 114 | regcache_raw_supply (regcache, ARM_FPS_REGNUM, |
cb587d83 | 115 | fp + NWFPE_FPSR_OFFSET); |
41c49b06 SB |
116 | |
117 | /* Fetch the floating point register. */ | |
34e8f22d | 118 | if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM) |
56be3814 | 119 | supply_nwfpe_register (regcache, regno, fp); |
41c49b06 SB |
120 | } |
121 | ||
122 | /* Get the whole floating point state of the process and store it | |
c6b92abd | 123 | into regcache. */ |
ed9a39eb JM |
124 | |
125 | static void | |
56be3814 | 126 | fetch_fpregs (struct regcache *regcache) |
ed9a39eb | 127 | { |
41c49b06 | 128 | int ret, regno, tid; |
cb587d83 | 129 | gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE]; |
ed9a39eb | 130 | |
41c49b06 | 131 | /* Get the thread id for the ptrace call. */ |
39f77062 | 132 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 | 133 | |
ed9a39eb | 134 | /* Read the floating point state. */ |
cb587d83 | 135 | ret = ptrace (PT_GETFPREGS, tid, 0, fp); |
ed9a39eb JM |
136 | if (ret < 0) |
137 | { | |
edefbb7c | 138 | warning (_("Unable to fetch the floating point registers.")); |
ed9a39eb JM |
139 | return; |
140 | } | |
141 | ||
142 | /* Fetch fpsr. */ | |
56be3814 | 143 | regcache_raw_supply (regcache, ARM_FPS_REGNUM, |
cb587d83 | 144 | fp + NWFPE_FPSR_OFFSET); |
ed9a39eb JM |
145 | |
146 | /* Fetch the floating point registers. */ | |
34e8f22d | 147 | for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++) |
56be3814 | 148 | supply_nwfpe_register (regcache, regno, fp); |
ed9a39eb JM |
149 | } |
150 | ||
41c49b06 | 151 | /* Save a particular register into the floating point state of the |
c6b92abd | 152 | process using the contents from regcache. */ |
41c49b06 SB |
153 | |
154 | static void | |
56be3814 | 155 | store_fpregister (const struct regcache *regcache, int regno) |
41c49b06 SB |
156 | { |
157 | int ret, tid; | |
cb587d83 | 158 | gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE]; |
41c49b06 SB |
159 | |
160 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 161 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
162 | |
163 | /* Read the floating point state. */ | |
cb587d83 | 164 | ret = ptrace (PT_GETFPREGS, tid, 0, fp); |
41c49b06 SB |
165 | if (ret < 0) |
166 | { | |
edefbb7c | 167 | warning (_("Unable to fetch the floating point registers.")); |
41c49b06 SB |
168 | return; |
169 | } | |
170 | ||
171 | /* Store fpsr. */ | |
56be3814 UW |
172 | if (ARM_FPS_REGNUM == regno && regcache_valid_p (regcache, ARM_FPS_REGNUM)) |
173 | regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET); | |
41c49b06 SB |
174 | |
175 | /* Store the floating point register. */ | |
34e8f22d | 176 | if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM) |
56be3814 | 177 | collect_nwfpe_register (regcache, regno, fp); |
41c49b06 | 178 | |
cb587d83 | 179 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp); |
41c49b06 SB |
180 | if (ret < 0) |
181 | { | |
edefbb7c | 182 | warning (_("Unable to store floating point register.")); |
41c49b06 SB |
183 | return; |
184 | } | |
185 | } | |
186 | ||
ed9a39eb | 187 | /* Save the whole floating point state of the process using |
c6b92abd | 188 | the contents from regcache. */ |
ed9a39eb JM |
189 | |
190 | static void | |
56be3814 | 191 | store_fpregs (const struct regcache *regcache) |
ed9a39eb | 192 | { |
41c49b06 | 193 | int ret, regno, tid; |
cb587d83 | 194 | gdb_byte fp[ARM_LINUX_SIZEOF_NWFPE]; |
ed9a39eb | 195 | |
41c49b06 | 196 | /* Get the thread id for the ptrace call. */ |
39f77062 | 197 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
198 | |
199 | /* Read the floating point state. */ | |
cb587d83 | 200 | ret = ptrace (PT_GETFPREGS, tid, 0, fp); |
41c49b06 SB |
201 | if (ret < 0) |
202 | { | |
edefbb7c | 203 | warning (_("Unable to fetch the floating point registers.")); |
41c49b06 SB |
204 | return; |
205 | } | |
206 | ||
ed9a39eb | 207 | /* Store fpsr. */ |
56be3814 UW |
208 | if (regcache_valid_p (regcache, ARM_FPS_REGNUM)) |
209 | regcache_raw_collect (regcache, ARM_FPS_REGNUM, fp + NWFPE_FPSR_OFFSET); | |
ed9a39eb JM |
210 | |
211 | /* Store the floating point registers. */ | |
34e8f22d | 212 | for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++) |
56be3814 UW |
213 | if (regcache_valid_p (regcache, regno)) |
214 | collect_nwfpe_register (regcache, regno, fp); | |
ed9a39eb | 215 | |
cb587d83 | 216 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, fp); |
ed9a39eb JM |
217 | if (ret < 0) |
218 | { | |
edefbb7c | 219 | warning (_("Unable to store floating point registers.")); |
ed9a39eb JM |
220 | return; |
221 | } | |
222 | } | |
223 | ||
41c49b06 | 224 | /* Fetch a general register of the process and store into |
c6b92abd | 225 | regcache. */ |
41c49b06 SB |
226 | |
227 | static void | |
56be3814 | 228 | fetch_register (struct regcache *regcache, int regno) |
41c49b06 SB |
229 | { |
230 | int ret, tid; | |
c2152441 | 231 | elf_gregset_t regs; |
41c49b06 SB |
232 | |
233 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 234 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
235 | |
236 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
237 | if (ret < 0) | |
238 | { | |
edefbb7c | 239 | warning (_("Unable to fetch general register.")); |
41c49b06 SB |
240 | return; |
241 | } | |
242 | ||
34e8f22d | 243 | if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM) |
56be3814 | 244 | regcache_raw_supply (regcache, regno, (char *) ®s[regno]); |
41c49b06 | 245 | |
34e8f22d | 246 | if (ARM_PS_REGNUM == regno) |
41c49b06 SB |
247 | { |
248 | if (arm_apcs_32) | |
56be3814 | 249 | regcache_raw_supply (regcache, ARM_PS_REGNUM, |
23a6d369 | 250 | (char *) ®s[ARM_CPSR_REGNUM]); |
41c49b06 | 251 | else |
56be3814 | 252 | regcache_raw_supply (regcache, ARM_PS_REGNUM, |
23a6d369 | 253 | (char *) ®s[ARM_PC_REGNUM]); |
41c49b06 SB |
254 | } |
255 | ||
34e8f22d | 256 | if (ARM_PC_REGNUM == regno) |
41c49b06 | 257 | { |
34e8f22d | 258 | regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]); |
56be3814 | 259 | regcache_raw_supply (regcache, ARM_PC_REGNUM, |
23a6d369 | 260 | (char *) ®s[ARM_PC_REGNUM]); |
41c49b06 SB |
261 | } |
262 | } | |
263 | ||
ed9a39eb | 264 | /* Fetch all general registers of the process and store into |
c6b92abd | 265 | regcache. */ |
ed9a39eb JM |
266 | |
267 | static void | |
56be3814 | 268 | fetch_regs (struct regcache *regcache) |
ed9a39eb | 269 | { |
41c49b06 | 270 | int ret, regno, tid; |
c2152441 | 271 | elf_gregset_t regs; |
ed9a39eb | 272 | |
41c49b06 | 273 | /* Get the thread id for the ptrace call. */ |
39f77062 | 274 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
275 | |
276 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
277 | if (ret < 0) |
278 | { | |
edefbb7c | 279 | warning (_("Unable to fetch general registers.")); |
ed9a39eb JM |
280 | return; |
281 | } | |
282 | ||
34e8f22d | 283 | for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) |
56be3814 | 284 | regcache_raw_supply (regcache, regno, (char *) ®s[regno]); |
ed9a39eb JM |
285 | |
286 | if (arm_apcs_32) | |
56be3814 | 287 | regcache_raw_supply (regcache, ARM_PS_REGNUM, |
23a6d369 | 288 | (char *) ®s[ARM_CPSR_REGNUM]); |
ed9a39eb | 289 | else |
56be3814 | 290 | regcache_raw_supply (regcache, ARM_PS_REGNUM, |
23a6d369 | 291 | (char *) ®s[ARM_PC_REGNUM]); |
ed9a39eb | 292 | |
34e8f22d | 293 | regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]); |
56be3814 | 294 | regcache_raw_supply (regcache, ARM_PC_REGNUM, |
23a6d369 | 295 | (char *) ®s[ARM_PC_REGNUM]); |
ed9a39eb JM |
296 | } |
297 | ||
298 | /* Store all general registers of the process from the values in | |
c6b92abd | 299 | regcache. */ |
ed9a39eb | 300 | |
41c49b06 | 301 | static void |
56be3814 | 302 | store_register (const struct regcache *regcache, int regno) |
41c49b06 SB |
303 | { |
304 | int ret, tid; | |
c2152441 | 305 | elf_gregset_t regs; |
41c49b06 | 306 | |
56be3814 | 307 | if (!regcache_valid_p (regcache, regno)) |
41c49b06 SB |
308 | return; |
309 | ||
310 | /* Get the thread id for the ptrace call. */ | |
39f77062 | 311 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
312 | |
313 | /* Get the general registers from the process. */ | |
314 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
315 | if (ret < 0) | |
316 | { | |
edefbb7c | 317 | warning (_("Unable to fetch general registers.")); |
41c49b06 SB |
318 | return; |
319 | } | |
320 | ||
34e8f22d | 321 | if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM) |
56be3814 | 322 | regcache_raw_collect (regcache, regno, (char *) ®s[regno]); |
adb8a87c | 323 | else if (arm_apcs_32 && regno == ARM_PS_REGNUM) |
56be3814 | 324 | regcache_raw_collect (regcache, regno, |
adb8a87c DJ |
325 | (char *) ®s[ARM_CPSR_REGNUM]); |
326 | else if (!arm_apcs_32 && regno == ARM_PS_REGNUM) | |
56be3814 | 327 | regcache_raw_collect (regcache, ARM_PC_REGNUM, |
adb8a87c | 328 | (char *) ®s[ARM_PC_REGNUM]); |
41c49b06 SB |
329 | |
330 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); | |
331 | if (ret < 0) | |
332 | { | |
edefbb7c | 333 | warning (_("Unable to store general register.")); |
41c49b06 SB |
334 | return; |
335 | } | |
336 | } | |
337 | ||
ed9a39eb | 338 | static void |
56be3814 | 339 | store_regs (const struct regcache *regcache) |
ed9a39eb | 340 | { |
41c49b06 | 341 | int ret, regno, tid; |
c2152441 | 342 | elf_gregset_t regs; |
ed9a39eb | 343 | |
41c49b06 | 344 | /* Get the thread id for the ptrace call. */ |
39f77062 | 345 | tid = GET_THREAD_ID (inferior_ptid); |
41c49b06 SB |
346 | |
347 | /* Fetch the general registers. */ | |
348 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); | |
ed9a39eb JM |
349 | if (ret < 0) |
350 | { | |
edefbb7c | 351 | warning (_("Unable to fetch general registers.")); |
ed9a39eb JM |
352 | return; |
353 | } | |
354 | ||
34e8f22d | 355 | for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++) |
ed9a39eb | 356 | { |
56be3814 UW |
357 | if (regcache_valid_p (regcache, regno)) |
358 | regcache_raw_collect (regcache, regno, (char *) ®s[regno]); | |
ed9a39eb JM |
359 | } |
360 | ||
56be3814 UW |
361 | if (arm_apcs_32 && regcache_valid_p (regcache, ARM_PS_REGNUM)) |
362 | regcache_raw_collect (regcache, ARM_PS_REGNUM, | |
adb8a87c DJ |
363 | (char *) ®s[ARM_CPSR_REGNUM]); |
364 | ||
41c49b06 | 365 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
ed9a39eb JM |
366 | |
367 | if (ret < 0) | |
368 | { | |
edefbb7c | 369 | warning (_("Unable to store general registers.")); |
ed9a39eb JM |
370 | return; |
371 | } | |
372 | } | |
373 | ||
05a4558a DJ |
374 | /* Fetch all WMMX registers of the process and store into |
375 | regcache. */ | |
376 | ||
377 | #define IWMMXT_REGS_SIZE (16 * 8 + 6 * 4) | |
378 | ||
379 | static void | |
56be3814 | 380 | fetch_wmmx_regs (struct regcache *regcache) |
05a4558a DJ |
381 | { |
382 | char regbuf[IWMMXT_REGS_SIZE]; | |
383 | int ret, regno, tid; | |
384 | ||
385 | /* Get the thread id for the ptrace call. */ | |
386 | tid = GET_THREAD_ID (inferior_ptid); | |
387 | ||
388 | ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf); | |
389 | if (ret < 0) | |
390 | { | |
391 | warning (_("Unable to fetch WMMX registers.")); | |
392 | return; | |
393 | } | |
394 | ||
395 | for (regno = 0; regno < 16; regno++) | |
56be3814 | 396 | regcache_raw_supply (regcache, regno + ARM_WR0_REGNUM, |
05a4558a DJ |
397 | ®buf[regno * 8]); |
398 | ||
399 | for (regno = 0; regno < 2; regno++) | |
56be3814 | 400 | regcache_raw_supply (regcache, regno + ARM_WCSSF_REGNUM, |
05a4558a DJ |
401 | ®buf[16 * 8 + regno * 4]); |
402 | ||
403 | for (regno = 0; regno < 4; regno++) | |
56be3814 | 404 | regcache_raw_supply (regcache, regno + ARM_WCGR0_REGNUM, |
05a4558a DJ |
405 | ®buf[16 * 8 + 2 * 4 + regno * 4]); |
406 | } | |
407 | ||
408 | static void | |
56be3814 | 409 | store_wmmx_regs (const struct regcache *regcache) |
05a4558a DJ |
410 | { |
411 | char regbuf[IWMMXT_REGS_SIZE]; | |
412 | int ret, regno, tid; | |
413 | ||
414 | /* Get the thread id for the ptrace call. */ | |
415 | tid = GET_THREAD_ID (inferior_ptid); | |
416 | ||
417 | ret = ptrace (PTRACE_GETWMMXREGS, tid, 0, regbuf); | |
418 | if (ret < 0) | |
419 | { | |
420 | warning (_("Unable to fetch WMMX registers.")); | |
421 | return; | |
422 | } | |
423 | ||
424 | for (regno = 0; regno < 16; regno++) | |
56be3814 UW |
425 | if (regcache_valid_p (regcache, regno + ARM_WR0_REGNUM)) |
426 | regcache_raw_collect (regcache, regno + ARM_WR0_REGNUM, | |
05a4558a DJ |
427 | ®buf[regno * 8]); |
428 | ||
429 | for (regno = 0; regno < 2; regno++) | |
56be3814 UW |
430 | if (regcache_valid_p (regcache, regno + ARM_WCSSF_REGNUM)) |
431 | regcache_raw_collect (regcache, regno + ARM_WCSSF_REGNUM, | |
05a4558a DJ |
432 | ®buf[16 * 8 + regno * 4]); |
433 | ||
434 | for (regno = 0; regno < 4; regno++) | |
56be3814 UW |
435 | if (regcache_valid_p (regcache, regno + ARM_WCGR0_REGNUM)) |
436 | regcache_raw_collect (regcache, regno + ARM_WCGR0_REGNUM, | |
05a4558a DJ |
437 | ®buf[16 * 8 + 2 * 4 + regno * 4]); |
438 | ||
439 | ret = ptrace (PTRACE_SETWMMXREGS, tid, 0, regbuf); | |
440 | ||
441 | if (ret < 0) | |
442 | { | |
443 | warning (_("Unable to store WMMX registers.")); | |
444 | return; | |
445 | } | |
446 | } | |
447 | ||
ed9a39eb JM |
448 | /* Fetch registers from the child process. Fetch all registers if |
449 | regno == -1, otherwise fetch all general registers or all floating | |
450 | point registers depending upon the value of regno. */ | |
451 | ||
10d6c8cd | 452 | static void |
56be3814 | 453 | arm_linux_fetch_inferior_registers (struct regcache *regcache, int regno) |
ed9a39eb | 454 | { |
41c49b06 SB |
455 | if (-1 == regno) |
456 | { | |
56be3814 UW |
457 | fetch_regs (regcache); |
458 | fetch_fpregs (regcache); | |
05a4558a | 459 | if (arm_linux_has_wmmx_registers) |
56be3814 | 460 | fetch_wmmx_regs (regcache); |
41c49b06 SB |
461 | } |
462 | else | |
463 | { | |
05a4558a | 464 | if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM) |
56be3814 | 465 | fetch_register (regcache, regno); |
05a4558a | 466 | else if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM) |
56be3814 | 467 | fetch_fpregister (regcache, regno); |
05a4558a DJ |
468 | else if (arm_linux_has_wmmx_registers |
469 | && regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM) | |
56be3814 | 470 | fetch_wmmx_regs (regcache); |
41c49b06 | 471 | } |
ed9a39eb JM |
472 | } |
473 | ||
474 | /* Store registers back into the inferior. Store all registers if | |
475 | regno == -1, otherwise store all general registers or all floating | |
476 | point registers depending upon the value of regno. */ | |
477 | ||
10d6c8cd | 478 | static void |
56be3814 | 479 | arm_linux_store_inferior_registers (struct regcache *regcache, int regno) |
ed9a39eb | 480 | { |
41c49b06 SB |
481 | if (-1 == regno) |
482 | { | |
56be3814 UW |
483 | store_regs (regcache); |
484 | store_fpregs (regcache); | |
05a4558a | 485 | if (arm_linux_has_wmmx_registers) |
56be3814 | 486 | store_wmmx_regs (regcache); |
41c49b06 SB |
487 | } |
488 | else | |
489 | { | |
05a4558a | 490 | if (regno < ARM_F0_REGNUM || regno == ARM_PS_REGNUM) |
56be3814 | 491 | store_register (regcache, regno); |
05a4558a | 492 | else if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM)) |
56be3814 | 493 | store_fpregister (regcache, regno); |
05a4558a DJ |
494 | else if (arm_linux_has_wmmx_registers |
495 | && regno >= ARM_WR0_REGNUM && regno <= ARM_WCGR7_REGNUM) | |
56be3814 | 496 | store_wmmx_regs (regcache); |
41c49b06 | 497 | } |
ed9a39eb JM |
498 | } |
499 | ||
cb587d83 DJ |
500 | /* Wrapper functions for the standard regset handling, used by |
501 | thread debugging. */ | |
41c49b06 SB |
502 | |
503 | void | |
7f7fe91e UW |
504 | fill_gregset (const struct regcache *regcache, |
505 | gdb_gregset_t *gregsetp, int regno) | |
41c49b06 | 506 | { |
7f7fe91e | 507 | arm_linux_collect_gregset (NULL, regcache, regno, gregsetp, 0); |
41c49b06 SB |
508 | } |
509 | ||
41c49b06 | 510 | void |
7f7fe91e | 511 | supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp) |
41c49b06 | 512 | { |
7f7fe91e | 513 | arm_linux_supply_gregset (NULL, regcache, -1, gregsetp, 0); |
41c49b06 SB |
514 | } |
515 | ||
41c49b06 | 516 | void |
7f7fe91e UW |
517 | fill_fpregset (const struct regcache *regcache, |
518 | gdb_fpregset_t *fpregsetp, int regno) | |
41c49b06 | 519 | { |
7f7fe91e | 520 | arm_linux_collect_nwfpe (NULL, regcache, regno, fpregsetp, 0); |
41c49b06 SB |
521 | } |
522 | ||
523 | /* Fill GDB's register array with the floating-point register values | |
524 | in *fpregsetp. */ | |
525 | ||
526 | void | |
7f7fe91e | 527 | supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp) |
ed9a39eb | 528 | { |
7f7fe91e | 529 | arm_linux_supply_nwfpe (NULL, regcache, -1, fpregsetp, 0); |
ed9a39eb JM |
530 | } |
531 | ||
9308fc88 DJ |
532 | /* Fetch the thread-local storage pointer for libthread_db. */ |
533 | ||
534 | ps_err_e | |
535 | ps_get_thread_area (const struct ps_prochandle *ph, | |
536 | lwpid_t lwpid, int idx, void **base) | |
537 | { | |
538 | if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0) | |
539 | return PS_ERR; | |
540 | ||
541 | /* IDX is the bias from the thread pointer to the beginning of the | |
542 | thread descriptor. It has to be subtracted due to implementation | |
543 | quirks in libthread_db. */ | |
544 | *base = (void *) ((char *)*base - idx); | |
545 | ||
546 | return PS_OK; | |
547 | } | |
548 | ||
ed9a39eb JM |
549 | static unsigned int |
550 | get_linux_version (unsigned int *vmajor, | |
551 | unsigned int *vminor, | |
552 | unsigned int *vrelease) | |
553 | { | |
554 | struct utsname info; | |
555 | char *pmajor, *pminor, *prelease, *tail; | |
556 | ||
557 | if (-1 == uname (&info)) | |
558 | { | |
edefbb7c | 559 | warning (_("Unable to determine GNU/Linux version.")); |
ed9a39eb JM |
560 | return -1; |
561 | } | |
562 | ||
563 | pmajor = strtok (info.release, "."); | |
564 | pminor = strtok (NULL, "."); | |
565 | prelease = strtok (NULL, "."); | |
566 | ||
567 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); | |
568 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); | |
569 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); | |
570 | ||
571 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); | |
572 | } | |
573 | ||
05a4558a DJ |
574 | static LONGEST (*super_xfer_partial) (struct target_ops *, enum target_object, |
575 | const char *, gdb_byte *, const gdb_byte *, | |
576 | ULONGEST, LONGEST); | |
577 | ||
578 | static LONGEST | |
579 | arm_linux_xfer_partial (struct target_ops *ops, | |
580 | enum target_object object, | |
581 | const char *annex, | |
582 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
583 | ULONGEST offset, LONGEST len) | |
584 | { | |
585 | if (object == TARGET_OBJECT_AVAILABLE_FEATURES) | |
586 | { | |
587 | if (annex != NULL && strcmp (annex, "target.xml") == 0) | |
588 | { | |
589 | int ret; | |
590 | char regbuf[IWMMXT_REGS_SIZE]; | |
591 | ||
592 | ret = ptrace (PTRACE_GETWMMXREGS, GET_THREAD_ID (inferior_ptid), | |
593 | 0, regbuf); | |
594 | if (ret < 0) | |
595 | arm_linux_has_wmmx_registers = 0; | |
596 | else | |
597 | arm_linux_has_wmmx_registers = 1; | |
598 | ||
599 | if (arm_linux_has_wmmx_registers) | |
600 | annex = "arm-with-iwmmxt.xml"; | |
601 | else | |
602 | return -1; | |
603 | } | |
604 | ||
605 | return xml_builtin_xfer_partial (annex, readbuf, writebuf, offset, len); | |
606 | } | |
607 | ||
608 | return super_xfer_partial (ops, object, annex, readbuf, writebuf, | |
609 | offset, len); | |
610 | } | |
611 | ||
10d6c8cd DJ |
612 | void _initialize_arm_linux_nat (void); |
613 | ||
ed9a39eb JM |
614 | void |
615 | _initialize_arm_linux_nat (void) | |
616 | { | |
10d6c8cd DJ |
617 | struct target_ops *t; |
618 | ||
ed9a39eb | 619 | os_version = get_linux_version (&os_major, &os_minor, &os_release); |
10d6c8cd DJ |
620 | |
621 | /* Fill in the generic GNU/Linux methods. */ | |
622 | t = linux_target (); | |
623 | ||
624 | /* Add our register access methods. */ | |
625 | t->to_fetch_registers = arm_linux_fetch_inferior_registers; | |
626 | t->to_store_registers = arm_linux_store_inferior_registers; | |
627 | ||
05a4558a DJ |
628 | /* Override the default to_xfer_partial. */ |
629 | super_xfer_partial = t->to_xfer_partial; | |
630 | t->to_xfer_partial = arm_linux_xfer_partial; | |
631 | ||
10d6c8cd | 632 | /* Register the target. */ |
f973ed9c | 633 | linux_nat_add_target (t); |
ed9a39eb | 634 | } |