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1 | /* <proc_service.h> implementation. |
2 | Copyright 1999, 2000 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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. */ | |
20 | ||
21 | #include "defs.h" | |
22 | ||
23 | #include "gdb_proc_service.h" | |
24 | #include <sys/procfs.h> | |
25 | ||
26 | #include "inferior.h" | |
27 | #include "symtab.h" | |
28 | #include "target.h" | |
29 | ||
30 | /* Prototypes for supply_gregset etc. */ | |
31 | #include "gregset.h" | |
32 | \f | |
33 | ||
34 | /* Fix-up some broken systems. */ | |
35 | ||
36 | /* The prototypes in <proc_service.h> are slightly different on older | |
37 | systems. Compensate for the discrepancies. */ | |
38 | ||
39 | #ifdef PROC_SERVICE_IS_OLD | |
40 | typedef const struct ps_prochandle *gdb_ps_prochandle_t; | |
41 | typedef char *gdb_ps_read_buf_t; | |
42 | typedef char *gdb_ps_write_buf_t; | |
43 | typedef int gdb_ps_size_t; | |
44 | #else | |
45 | typedef struct ps_prochandle *gdb_ps_prochandle_t; | |
46 | typedef void *gdb_ps_read_buf_t; | |
47 | typedef const void *gdb_ps_write_buf_t; | |
48 | typedef size_t gdb_ps_size_t; | |
49 | #endif | |
50 | \f | |
51 | ||
52 | /* Building process ids. */ | |
53 | ||
c987d8c0 | 54 | #define BUILD_LWP(lwp, pid) ptid_build (pid, lwp, 0) |
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55 | \f |
56 | ||
57 | /* Helper functions. */ | |
58 | ||
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59 | /* Transfer LEN bytes of memory between BUF and address ADDR in the |
60 | process specified by PH. If WRITE, transfer them to the process, | |
61 | else transfer them from the process. Returns PS_OK for success, | |
62 | PS_ERR on failure. | |
63 | ||
64 | This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and | |
65 | ps_ptwrite. */ | |
66 | ||
67 | static ps_err_e | |
68 | ps_xfer_memory (const struct ps_prochandle *ph, paddr_t addr, | |
69 | char *buf, size_t len, int write) | |
70 | { | |
39f77062 | 71 | struct cleanup *old_chain = save_inferior_ptid (); |
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72 | int ret; |
73 | ||
39f77062 | 74 | inferior_ptid = pid_to_ptid (ph->pid); |
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75 | |
76 | if (write) | |
77 | ret = target_write_memory (addr, buf, len); | |
78 | else | |
79 | ret = target_read_memory (addr, buf, len); | |
80 | ||
81 | do_cleanups (old_chain); | |
82 | ||
83 | return (ret == 0 ? PS_OK : PS_ERR); | |
84 | } | |
85 | \f | |
86 | ||
87 | /* Stop the target process PH. */ | |
88 | ||
89 | ps_err_e | |
90 | ps_pstop (gdb_ps_prochandle_t ph) | |
91 | { | |
92 | /* The process is always stopped when under control of GDB. */ | |
93 | return PS_OK; | |
94 | } | |
95 | ||
96 | /* Resume the target process PH. */ | |
97 | ||
98 | ps_err_e | |
99 | ps_pcontinue (gdb_ps_prochandle_t ph) | |
100 | { | |
101 | /* Pretend we did successfully continue the process. GDB will take | |
102 | care of it later on. */ | |
103 | return PS_OK; | |
104 | } | |
105 | ||
106 | /* Stop the lightweight process LWPID within the target process PH. */ | |
107 | ||
108 | ps_err_e | |
109 | ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
110 | { | |
111 | /* All lightweight processes are stopped when under control of GDB. */ | |
112 | return PS_OK; | |
113 | } | |
114 | ||
115 | /* Resume the lightweight process (LWP) LWPID within the target | |
116 | process PH. */ | |
117 | ||
118 | ps_err_e | |
119 | ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) | |
120 | { | |
121 | /* Pretend we did successfully continue LWPID. GDB will take care | |
122 | of it later on. */ | |
123 | return PS_OK; | |
124 | } | |
125 | ||
126 | /* Get the size of the architecture-dependent extra state registers | |
127 | for LWP LWPID within the target process PH and return it in | |
128 | *XREGSIZE. */ | |
129 | ||
130 | ps_err_e | |
131 | ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) | |
132 | { | |
133 | /* FIXME: Not supported yet. */ | |
134 | return PS_OK; | |
135 | } | |
136 | ||
137 | /* Get the extra state registers of LWP LWPID within the target | |
138 | process PH and store them in XREGSET. */ | |
139 | ||
140 | ps_err_e | |
141 | ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
142 | { | |
143 | /* FIXME: Not supported yet. */ | |
144 | return PS_OK; | |
145 | } | |
146 | ||
147 | /* Set the extra state registers of LWP LWPID within the target | |
148 | process PH from XREGSET. */ | |
149 | ||
150 | ps_err_e | |
151 | ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) | |
152 | { | |
153 | /* FIXME: Not supported yet. */ | |
154 | return PS_OK; | |
155 | } | |
156 | ||
157 | /* Log (additional) diognostic information. */ | |
158 | ||
159 | void | |
160 | ps_plog (const char *fmt, ...) | |
161 | { | |
162 | va_list args; | |
163 | ||
164 | va_start (args, fmt); | |
165 | vfprintf_filtered (gdb_stderr, fmt, args); | |
166 | } | |
167 | ||
168 | /* Search for the symbol named NAME within the object named OBJ within | |
169 | the target process PH. If the symbol is found the address of the | |
170 | symbol is stored in SYM_ADDR. */ | |
171 | ||
172 | ps_err_e | |
173 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
174 | const char *name, paddr_t *sym_addr) | |
175 | { | |
176 | struct minimal_symbol *ms; | |
177 | ||
178 | /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */ | |
179 | ms = lookup_minimal_symbol (name, NULL, NULL); | |
180 | if (ms == NULL) | |
181 | return PS_NOSYM; | |
182 | ||
183 | *sym_addr = SYMBOL_VALUE_ADDRESS (ms); | |
184 | return PS_OK; | |
185 | } | |
186 | ||
187 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
188 | them into BUF. */ | |
189 | ||
190 | ps_err_e | |
191 | ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr, | |
192 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) | |
193 | { | |
194 | return ps_xfer_memory (ph, addr, buf, size, 0); | |
195 | } | |
196 | ||
197 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
198 | ||
199 | ps_err_e | |
200 | ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr, | |
201 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) | |
202 | { | |
203 | return ps_xfer_memory (ph, addr, (char *) buf, size, 1); | |
204 | } | |
205 | ||
206 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
207 | them into BUF. */ | |
208 | ||
209 | ps_err_e | |
210 | ps_ptread (gdb_ps_prochandle_t ph, paddr_t addr, | |
211 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) | |
212 | { | |
213 | return ps_xfer_memory (ph, addr, buf, size, 0); | |
214 | } | |
215 | ||
216 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
217 | ||
218 | ps_err_e | |
219 | ps_ptwrite (gdb_ps_prochandle_t ph, paddr_t addr, | |
220 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) | |
221 | { | |
222 | return ps_xfer_memory (ph, addr, (char *) buf, size, 1); | |
223 | } | |
224 | ||
225 | /* Get the general registers of LWP LWPID within the target process PH | |
226 | and store them in GREGSET. */ | |
227 | ||
228 | ps_err_e | |
229 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
230 | { | |
39f77062 | 231 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 232 | |
39f77062 | 233 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
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234 | |
235 | target_fetch_registers (-1); | |
236 | fill_gregset ((gdb_gregset_t *) gregset, -1); | |
237 | ||
238 | do_cleanups (old_chain); | |
239 | return PS_OK; | |
240 | } | |
241 | ||
242 | /* Set the general registers of LWP LWPID within the target process PH | |
243 | from GREGSET. */ | |
244 | ||
245 | ps_err_e | |
246 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
247 | { | |
39f77062 | 248 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 249 | |
39f77062 | 250 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
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251 | |
252 | /* FIXME: We should really make supply_gregset const-correct. */ | |
253 | supply_gregset ((gdb_gregset_t *) gregset); | |
254 | target_store_registers (-1); | |
255 | ||
256 | do_cleanups (old_chain); | |
257 | return PS_OK; | |
258 | } | |
259 | ||
260 | /* Get the floating-point registers of LWP LWPID within the target | |
261 | process PH and store them in FPREGSET. */ | |
262 | ||
263 | ps_err_e | |
264 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
265 | gdb_prfpregset_t *fpregset) | |
266 | { | |
39f77062 | 267 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 268 | |
39f77062 | 269 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
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270 | |
271 | target_fetch_registers (-1); | |
272 | fill_fpregset ((gdb_fpregset_t *) fpregset, -1); | |
273 | ||
274 | do_cleanups (old_chain); | |
275 | return PS_OK; | |
276 | } | |
277 | ||
278 | /* Set the floating-point registers of LWP LWPID within the target | |
279 | process PH from FPREGSET. */ | |
280 | ||
281 | ps_err_e | |
282 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
283 | const gdb_prfpregset_t *fpregset) | |
284 | { | |
39f77062 | 285 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 286 | |
39f77062 | 287 | inferior_ptid = BUILD_LWP (lwpid, ph->pid); |
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288 | |
289 | /* FIXME: We should really make supply_fpregset const-correct. */ | |
290 | supply_fpregset ((gdb_fpregset_t *) fpregset); | |
291 | target_store_registers (-1); | |
292 | ||
293 | do_cleanups (old_chain); | |
294 | return PS_OK; | |
295 | } | |
296 | ||
297 | /* Return overall process id of the target PH. | |
298 | Special for Linux -- not used on Solaris. */ | |
299 | ||
300 | pid_t | |
301 | ps_getpid (gdb_ps_prochandle_t ph) | |
302 | { | |
303 | return ph->pid; | |
304 | } | |
305 | ||
306 | void | |
307 | _initialize_proc_service (void) | |
308 | { | |
309 | /* This function solely exists to make sure this module is linked | |
310 | into the final binary. */ | |
311 | } |