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fb0e1ba7 | 1 | /* <proc_service.h> implementation. |
ca557f44 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1999-2014 Free Software Foundation, Inc. |
fb0e1ba7 MK |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
fb0e1ba7 MK |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
fb0e1ba7 MK |
19 | |
20 | #include "defs.h" | |
21 | ||
76e1ee85 | 22 | #include "gdbcore.h" |
fb0e1ba7 MK |
23 | #include "inferior.h" |
24 | #include "symtab.h" | |
25 | #include "target.h" | |
7f7fe91e | 26 | #include "regcache.h" |
77e371c0 | 27 | #include "objfiles.h" |
fb0e1ba7 | 28 | |
76e1ee85 | 29 | #include "gdb_proc_service.h" |
76e1ee85 DJ |
30 | |
31 | #include <sys/procfs.h> | |
32 | ||
fb0e1ba7 MK |
33 | /* Prototypes for supply_gregset etc. */ |
34 | #include "gregset.h" | |
35 | \f | |
36 | ||
37 | /* Fix-up some broken systems. */ | |
38 | ||
39 | /* The prototypes in <proc_service.h> are slightly different on older | |
40 | systems. Compensate for the discrepancies. */ | |
41 | ||
42 | #ifdef PROC_SERVICE_IS_OLD | |
43 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; | |
44 | typedef char *gdb_ps_read_buf_t; | |
45 | typedef char *gdb_ps_write_buf_t; | |
46 | typedef int gdb_ps_size_t; | |
47 | #else | |
48 | typedef struct ps_prochandle *gdb_ps_prochandle_t; | |
49 | typedef void *gdb_ps_read_buf_t; | |
50 | typedef const void *gdb_ps_write_buf_t; | |
51 | typedef size_t gdb_ps_size_t; | |
52 | #endif | |
53 | \f | |
54 | ||
fb0e1ba7 MK |
55 | /* Helper functions. */ |
56 | ||
76e1ee85 DJ |
57 | /* Convert a psaddr_t to a CORE_ADDR. */ |
58 | ||
59 | static CORE_ADDR | |
60 | ps_addr_to_core_addr (psaddr_t addr) | |
61 | { | |
62 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
63 | return (intptr_t) addr; | |
64 | else | |
65 | return (uintptr_t) addr; | |
66 | } | |
67 | ||
68 | /* Convert a CORE_ADDR to a psaddr_t. */ | |
69 | ||
70 | static psaddr_t | |
71 | core_addr_to_ps_addr (CORE_ADDR addr) | |
72 | { | |
73 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
74 | return (psaddr_t) (intptr_t) addr; | |
75 | else | |
76 | return (psaddr_t) (uintptr_t) addr; | |
77 | } | |
78 | ||
fb0e1ba7 MK |
79 | /* Transfer LEN bytes of memory between BUF and address ADDR in the |
80 | process specified by PH. If WRITE, transfer them to the process, | |
81 | else transfer them from the process. Returns PS_OK for success, | |
82 | PS_ERR on failure. | |
83 | ||
84 | This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and | |
85 | ps_ptwrite. */ | |
86 | ||
87 | static ps_err_e | |
76e1ee85 | 88 | ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr, |
47b667de | 89 | gdb_byte *buf, size_t len, int write) |
fb0e1ba7 | 90 | { |
39f77062 | 91 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 92 | int ret; |
76e1ee85 | 93 | CORE_ADDR core_addr = ps_addr_to_core_addr (addr); |
fb0e1ba7 | 94 | |
93a91755 | 95 | inferior_ptid = ph->ptid; |
fb0e1ba7 MK |
96 | |
97 | if (write) | |
76e1ee85 | 98 | ret = target_write_memory (core_addr, buf, len); |
fb0e1ba7 | 99 | else |
76e1ee85 | 100 | ret = target_read_memory (core_addr, buf, len); |
fb0e1ba7 MK |
101 | |
102 | do_cleanups (old_chain); | |
103 | ||
104 | return (ret == 0 ? PS_OK : PS_ERR); | |
105 | } | |
106 | \f | |
107 | ||
108 | /* Stop the target process PH. */ | |
109 | ||
110 | ps_err_e | |
111 | ps_pstop (gdb_ps_prochandle_t ph) | |
112 | { | |
113 | /* The process is always stopped when under control of GDB. */ | |
114 | return PS_OK; | |
115 | } | |
116 | ||
117 | /* Resume the target process PH. */ | |
118 | ||
119 | ps_err_e | |
120 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
121 | { | |
122 | /* Pretend we did successfully continue the process. GDB will take | |
123 | care of it later on. */ | |
124 | return PS_OK; | |
125 | } | |
126 | ||
127 | /* Stop the lightweight process LWPID within the target process PH. */ | |
128 | ||
129 | ps_err_e | |
130 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
131 | { | |
132 | /* All lightweight processes are stopped when under control of GDB. */ | |
133 | return PS_OK; | |
134 | } | |
135 | ||
136 | /* Resume the lightweight process (LWP) LWPID within the target | |
137 | process PH. */ | |
138 | ||
139 | ps_err_e | |
140 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
141 | { | |
142 | /* Pretend we did successfully continue LWPID. GDB will take care | |
143 | of it later on. */ | |
144 | return PS_OK; | |
145 | } | |
146 | ||
147 | /* Get the size of the architecture-dependent extra state registers | |
148 | for LWP LWPID within the target process PH and return it in | |
149 | *XREGSIZE. */ | |
150 | ||
151 | ps_err_e | |
152 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
153 | { | |
154 | /* FIXME: Not supported yet. */ | |
155 | return PS_OK; | |
156 | } | |
157 | ||
158 | /* Get the extra state registers of LWP LWPID within the target | |
159 | process PH and store them in XREGSET. */ | |
160 | ||
161 | ps_err_e | |
162 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
163 | { | |
164 | /* FIXME: Not supported yet. */ | |
165 | return PS_OK; | |
166 | } | |
167 | ||
168 | /* Set the extra state registers of LWP LWPID within the target | |
169 | process PH from XREGSET. */ | |
170 | ||
171 | ps_err_e | |
172 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
173 | { | |
174 | /* FIXME: Not supported yet. */ | |
175 | return PS_OK; | |
176 | } | |
177 | ||
178 | /* Log (additional) diognostic information. */ | |
179 | ||
180 | void | |
181 | ps_plog (const char *fmt, ...) | |
182 | { | |
183 | va_list args; | |
184 | ||
185 | va_start (args, fmt); | |
186 | vfprintf_filtered (gdb_stderr, fmt, args); | |
0480cefa | 187 | va_end (args); |
fb0e1ba7 MK |
188 | } |
189 | ||
190 | /* Search for the symbol named NAME within the object named OBJ within | |
191 | the target process PH. If the symbol is found the address of the | |
192 | symbol is stored in SYM_ADDR. */ | |
193 | ||
194 | ps_err_e | |
195 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
76e1ee85 | 196 | const char *name, psaddr_t *sym_addr) |
fb0e1ba7 | 197 | { |
3b7344d5 | 198 | struct bound_minimal_symbol ms; |
c988ad87 TT |
199 | struct cleanup *old_chain = save_current_program_space (); |
200 | struct inferior *inf = find_inferior_pid (ptid_get_pid (ph->ptid)); | |
201 | ps_err_e result; | |
202 | ||
203 | set_current_program_space (inf->pspace); | |
fb0e1ba7 MK |
204 | |
205 | /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */ | |
206 | ms = lookup_minimal_symbol (name, NULL, NULL); | |
3b7344d5 | 207 | if (ms.minsym == NULL) |
c988ad87 TT |
208 | result = PS_NOSYM; |
209 | else | |
210 | { | |
77e371c0 | 211 | *sym_addr = core_addr_to_ps_addr (BMSYMBOL_VALUE_ADDRESS (ms)); |
c988ad87 TT |
212 | result = PS_OK; |
213 | } | |
fb0e1ba7 | 214 | |
c988ad87 TT |
215 | do_cleanups (old_chain); |
216 | return result; | |
fb0e1ba7 MK |
217 | } |
218 | ||
219 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
220 | them into BUF. */ | |
221 | ||
222 | ps_err_e | |
76e1ee85 | 223 | ps_pdread (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
224 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
225 | { | |
226 | return ps_xfer_memory (ph, addr, buf, size, 0); | |
227 | } | |
228 | ||
229 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
230 | ||
231 | ps_err_e | |
76e1ee85 | 232 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
233 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
234 | { | |
47b667de | 235 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
236 | } |
237 | ||
238 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
239 | them into BUF. */ | |
240 | ||
241 | ps_err_e | |
76e1ee85 | 242 | ps_ptread (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
243 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
244 | { | |
47b667de | 245 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0); |
fb0e1ba7 MK |
246 | } |
247 | ||
248 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
249 | ||
250 | ps_err_e | |
76e1ee85 | 251 | ps_ptwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
252 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
253 | { | |
47b667de | 254 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
255 | } |
256 | ||
257 | /* Get the general registers of LWP LWPID within the target process PH | |
258 | and store them in GREGSET. */ | |
259 | ||
260 | ps_err_e | |
261 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
262 | { | |
39f77062 | 263 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 264 | struct regcache *regcache; |
fb0e1ba7 | 265 | |
dfd4cc63 | 266 | inferior_ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
f5656ead | 267 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
fb0e1ba7 | 268 | |
594f7785 UW |
269 | target_fetch_registers (regcache, -1); |
270 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); | |
fb0e1ba7 MK |
271 | |
272 | do_cleanups (old_chain); | |
273 | return PS_OK; | |
274 | } | |
275 | ||
276 | /* Set the general registers of LWP LWPID within the target process PH | |
277 | from GREGSET. */ | |
278 | ||
279 | ps_err_e | |
280 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
281 | { | |
39f77062 | 282 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 283 | struct regcache *regcache; |
fb0e1ba7 | 284 | |
dfd4cc63 | 285 | inferior_ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
f5656ead | 286 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
fb0e1ba7 | 287 | |
594f7785 UW |
288 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
289 | target_store_registers (regcache, -1); | |
fb0e1ba7 MK |
290 | |
291 | do_cleanups (old_chain); | |
292 | return PS_OK; | |
293 | } | |
294 | ||
295 | /* Get the floating-point registers of LWP LWPID within the target | |
296 | process PH and store them in FPREGSET. */ | |
297 | ||
298 | ps_err_e | |
299 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
300 | gdb_prfpregset_t *fpregset) | |
301 | { | |
39f77062 | 302 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 303 | struct regcache *regcache; |
fb0e1ba7 | 304 | |
dfd4cc63 | 305 | inferior_ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
f5656ead | 306 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
fb0e1ba7 | 307 | |
594f7785 UW |
308 | target_fetch_registers (regcache, -1); |
309 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); | |
fb0e1ba7 MK |
310 | |
311 | do_cleanups (old_chain); | |
312 | return PS_OK; | |
313 | } | |
314 | ||
315 | /* Set the floating-point registers of LWP LWPID within the target | |
316 | process PH from FPREGSET. */ | |
317 | ||
318 | ps_err_e | |
319 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
320 | const gdb_prfpregset_t *fpregset) | |
321 | { | |
39f77062 | 322 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 323 | struct regcache *regcache; |
fb0e1ba7 | 324 | |
dfd4cc63 | 325 | inferior_ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
f5656ead | 326 | regcache = get_thread_arch_regcache (inferior_ptid, target_gdbarch ()); |
fb0e1ba7 | 327 | |
594f7785 UW |
328 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
329 | target_store_registers (regcache, -1); | |
fb0e1ba7 MK |
330 | |
331 | do_cleanups (old_chain); | |
332 | return PS_OK; | |
333 | } | |
334 | ||
ca557f44 AC |
335 | /* Return overall process id of the target PH. Special for GNU/Linux |
336 | -- not used on Solaris. */ | |
fb0e1ba7 MK |
337 | |
338 | pid_t | |
339 | ps_getpid (gdb_ps_prochandle_t ph) | |
340 | { | |
93a91755 | 341 | return ptid_get_pid (ph->ptid); |
fb0e1ba7 MK |
342 | } |
343 | ||
2c0b251b PA |
344 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
345 | extern initialize_file_ftype _initialize_proc_service; | |
346 | ||
fb0e1ba7 MK |
347 | void |
348 | _initialize_proc_service (void) | |
349 | { | |
350 | /* This function solely exists to make sure this module is linked | |
351 | into the final binary. */ | |
352 | } |