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fb0e1ba7 | 1 | /* <proc_service.h> implementation. |
ca557f44 | 2 | |
9b254dd1 | 3 | Copyright (C) 1999, 2000, 2002, 2007, 2008 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" |
fb0e1ba7 | 27 | |
76e1ee85 | 28 | #include "gdb_proc_service.h" |
76e1ee85 DJ |
29 | |
30 | #include <sys/procfs.h> | |
31 | ||
fb0e1ba7 MK |
32 | /* Prototypes for supply_gregset etc. */ |
33 | #include "gregset.h" | |
34 | \f | |
35 | ||
36 | /* Fix-up some broken systems. */ | |
37 | ||
38 | /* The prototypes in <proc_service.h> are slightly different on older | |
39 | systems. Compensate for the discrepancies. */ | |
40 | ||
41 | #ifdef PROC_SERVICE_IS_OLD | |
42 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; | |
43 | typedef char *gdb_ps_read_buf_t; | |
44 | typedef char *gdb_ps_write_buf_t; | |
45 | typedef int gdb_ps_size_t; | |
46 | #else | |
47 | typedef struct ps_prochandle *gdb_ps_prochandle_t; | |
48 | typedef void *gdb_ps_read_buf_t; | |
49 | typedef const void *gdb_ps_write_buf_t; | |
50 | typedef size_t gdb_ps_size_t; | |
51 | #endif | |
52 | \f | |
53 | ||
54 | /* Building process ids. */ | |
55 | ||
c987d8c0 | 56 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) |
fb0e1ba7 MK |
57 | \f |
58 | ||
59 | /* Helper functions. */ | |
60 | ||
76e1ee85 DJ |
61 | /* Convert a psaddr_t to a CORE_ADDR. */ |
62 | ||
63 | static CORE_ADDR | |
64 | ps_addr_to_core_addr (psaddr_t addr) | |
65 | { | |
66 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
67 | return (intptr_t) addr; | |
68 | else | |
69 | return (uintptr_t) addr; | |
70 | } | |
71 | ||
72 | /* Convert a CORE_ADDR to a psaddr_t. */ | |
73 | ||
74 | static psaddr_t | |
75 | core_addr_to_ps_addr (CORE_ADDR addr) | |
76 | { | |
77 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
78 | return (psaddr_t) (intptr_t) addr; | |
79 | else | |
80 | return (psaddr_t) (uintptr_t) addr; | |
81 | } | |
82 | ||
fb0e1ba7 MK |
83 | /* Transfer LEN bytes of memory between BUF and address ADDR in the |
84 | process specified by PH. If WRITE, transfer them to the process, | |
85 | else transfer them from the process. Returns PS_OK for success, | |
86 | PS_ERR on failure. | |
87 | ||
88 | This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and | |
89 | ps_ptwrite. */ | |
90 | ||
91 | static ps_err_e | |
76e1ee85 | 92 | ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr, |
47b667de | 93 | gdb_byte *buf, size_t len, int write) |
fb0e1ba7 | 94 | { |
39f77062 | 95 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 96 | int ret; |
76e1ee85 | 97 | CORE_ADDR core_addr = ps_addr_to_core_addr (addr); |
fb0e1ba7 | 98 | |
39f77062 | 99 | inferior_ptid = pid_to_ptid (ph->pid); |
fb0e1ba7 MK |
100 | |
101 | if (write) | |
76e1ee85 | 102 | ret = target_write_memory (core_addr, buf, len); |
fb0e1ba7 | 103 | else |
76e1ee85 | 104 | ret = target_read_memory (core_addr, buf, len); |
fb0e1ba7 MK |
105 | |
106 | do_cleanups (old_chain); | |
107 | ||
108 | return (ret == 0 ? PS_OK : PS_ERR); | |
109 | } | |
110 | \f | |
111 | ||
112 | /* Stop the target process PH. */ | |
113 | ||
114 | ps_err_e | |
115 | ps_pstop (gdb_ps_prochandle_t ph) | |
116 | { | |
117 | /* The process is always stopped when under control of GDB. */ | |
118 | return PS_OK; | |
119 | } | |
120 | ||
121 | /* Resume the target process PH. */ | |
122 | ||
123 | ps_err_e | |
124 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
125 | { | |
126 | /* Pretend we did successfully continue the process. GDB will take | |
127 | care of it later on. */ | |
128 | return PS_OK; | |
129 | } | |
130 | ||
131 | /* Stop the lightweight process LWPID within the target process PH. */ | |
132 | ||
133 | ps_err_e | |
134 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
135 | { | |
136 | /* All lightweight processes are stopped when under control of GDB. */ | |
137 | return PS_OK; | |
138 | } | |
139 | ||
140 | /* Resume the lightweight process (LWP) LWPID within the target | |
141 | process PH. */ | |
142 | ||
143 | ps_err_e | |
144 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
145 | { | |
146 | /* Pretend we did successfully continue LWPID. GDB will take care | |
147 | of it later on. */ | |
148 | return PS_OK; | |
149 | } | |
150 | ||
151 | /* Get the size of the architecture-dependent extra state registers | |
152 | for LWP LWPID within the target process PH and return it in | |
153 | *XREGSIZE. */ | |
154 | ||
155 | ps_err_e | |
156 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
157 | { | |
158 | /* FIXME: Not supported yet. */ | |
159 | return PS_OK; | |
160 | } | |
161 | ||
162 | /* Get the extra state registers of LWP LWPID within the target | |
163 | process PH and store them in XREGSET. */ | |
164 | ||
165 | ps_err_e | |
166 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
167 | { | |
168 | /* FIXME: Not supported yet. */ | |
169 | return PS_OK; | |
170 | } | |
171 | ||
172 | /* Set the extra state registers of LWP LWPID within the target | |
173 | process PH from XREGSET. */ | |
174 | ||
175 | ps_err_e | |
176 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
177 | { | |
178 | /* FIXME: Not supported yet. */ | |
179 | return PS_OK; | |
180 | } | |
181 | ||
182 | /* Log (additional) diognostic information. */ | |
183 | ||
184 | void | |
185 | ps_plog (const char *fmt, ...) | |
186 | { | |
187 | va_list args; | |
188 | ||
189 | va_start (args, fmt); | |
190 | vfprintf_filtered (gdb_stderr, fmt, args); | |
191 | } | |
192 | ||
193 | /* Search for the symbol named NAME within the object named OBJ within | |
194 | the target process PH. If the symbol is found the address of the | |
195 | symbol is stored in SYM_ADDR. */ | |
196 | ||
197 | ps_err_e | |
198 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
76e1ee85 | 199 | const char *name, psaddr_t *sym_addr) |
fb0e1ba7 MK |
200 | { |
201 | struct minimal_symbol *ms; | |
202 | ||
203 | /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */ | |
204 | ms = lookup_minimal_symbol (name, NULL, NULL); | |
205 | if (ms == NULL) | |
206 | return PS_NOSYM; | |
207 | ||
76e1ee85 | 208 | *sym_addr = core_addr_to_ps_addr (SYMBOL_VALUE_ADDRESS (ms)); |
fb0e1ba7 MK |
209 | return PS_OK; |
210 | } | |
211 | ||
212 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
213 | them into BUF. */ | |
214 | ||
215 | ps_err_e | |
76e1ee85 | 216 | ps_pdread (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
217 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
218 | { | |
219 | return ps_xfer_memory (ph, addr, buf, size, 0); | |
220 | } | |
221 | ||
222 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
223 | ||
224 | ps_err_e | |
76e1ee85 | 225 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
226 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
227 | { | |
47b667de | 228 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
229 | } |
230 | ||
231 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
232 | them into BUF. */ | |
233 | ||
234 | ps_err_e | |
76e1ee85 | 235 | ps_ptread (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
236 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
237 | { | |
47b667de | 238 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0); |
fb0e1ba7 MK |
239 | } |
240 | ||
241 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
242 | ||
243 | ps_err_e | |
76e1ee85 | 244 | ps_ptwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
245 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
246 | { | |
47b667de | 247 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
248 | } |
249 | ||
250 | /* Get the general registers of LWP LWPID within the target process PH | |
251 | and store them in GREGSET. */ | |
252 | ||
253 | ps_err_e | |
254 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
255 | { | |
39f77062 | 256 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 257 | struct regcache *regcache; |
fb0e1ba7 | 258 | |
39f77062 | 259 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
594f7785 | 260 | regcache = get_thread_regcache (inferior_ptid); |
fb0e1ba7 | 261 | |
594f7785 UW |
262 | target_fetch_registers (regcache, -1); |
263 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); | |
fb0e1ba7 MK |
264 | |
265 | do_cleanups (old_chain); | |
266 | return PS_OK; | |
267 | } | |
268 | ||
269 | /* Set the general registers of LWP LWPID within the target process PH | |
270 | from GREGSET. */ | |
271 | ||
272 | ps_err_e | |
273 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
274 | { | |
39f77062 | 275 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 276 | struct regcache *regcache; |
fb0e1ba7 | 277 | |
39f77062 | 278 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
594f7785 | 279 | regcache = get_thread_regcache (inferior_ptid); |
fb0e1ba7 | 280 | |
594f7785 UW |
281 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
282 | target_store_registers (regcache, -1); | |
fb0e1ba7 MK |
283 | |
284 | do_cleanups (old_chain); | |
285 | return PS_OK; | |
286 | } | |
287 | ||
288 | /* Get the floating-point registers of LWP LWPID within the target | |
289 | process PH and store them in FPREGSET. */ | |
290 | ||
291 | ps_err_e | |
292 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
293 | gdb_prfpregset_t *fpregset) | |
294 | { | |
39f77062 | 295 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 296 | struct regcache *regcache; |
fb0e1ba7 | 297 | |
39f77062 | 298 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
594f7785 | 299 | regcache = get_thread_regcache (inferior_ptid); |
fb0e1ba7 | 300 | |
594f7785 UW |
301 | target_fetch_registers (regcache, -1); |
302 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); | |
fb0e1ba7 MK |
303 | |
304 | do_cleanups (old_chain); | |
305 | return PS_OK; | |
306 | } | |
307 | ||
308 | /* Set the floating-point registers of LWP LWPID within the target | |
309 | process PH from FPREGSET. */ | |
310 | ||
311 | ps_err_e | |
312 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
313 | const gdb_prfpregset_t *fpregset) | |
314 | { | |
39f77062 | 315 | struct cleanup *old_chain = save_inferior_ptid (); |
594f7785 | 316 | struct regcache *regcache; |
fb0e1ba7 | 317 | |
39f77062 | 318 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
594f7785 | 319 | regcache = get_thread_regcache (inferior_ptid); |
fb0e1ba7 | 320 | |
594f7785 UW |
321 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
322 | target_store_registers (regcache, -1); | |
fb0e1ba7 MK |
323 | |
324 | do_cleanups (old_chain); | |
325 | return PS_OK; | |
326 | } | |
327 | ||
ca557f44 AC |
328 | /* Return overall process id of the target PH. Special for GNU/Linux |
329 | -- not used on Solaris. */ | |
fb0e1ba7 MK |
330 | |
331 | pid_t | |
332 | ps_getpid (gdb_ps_prochandle_t ph) | |
333 | { | |
334 | return ph->pid; | |
335 | } | |
336 | ||
337 | void | |
338 | _initialize_proc_service (void) | |
339 | { | |
340 | /* This function solely exists to make sure this module is linked | |
341 | into the final binary. */ | |
342 | } |