1 /* <proc_service.h> implementation.
3 Copyright (C) 1999-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
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 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "gdb_proc_service.h"
31 #include <sys/procfs.h>
33 /* Prototypes for supply_gregset etc. */
37 /* Fix-up some broken systems. */
39 /* The prototypes in <proc_service.h> are slightly different on older
40 systems. Compensate for the discrepancies. */
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
;
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
;
55 /* Helper functions. */
57 /* Convert a psaddr_t to a CORE_ADDR. */
60 ps_addr_to_core_addr (psaddr_t addr
)
62 if (exec_bfd
&& bfd_get_sign_extend_vma (exec_bfd
))
63 return (intptr_t) addr
;
65 return (uintptr_t) addr
;
68 /* Convert a CORE_ADDR to a psaddr_t. */
71 core_addr_to_ps_addr (CORE_ADDR addr
)
73 if (exec_bfd
&& bfd_get_sign_extend_vma (exec_bfd
))
74 return (psaddr_t
) (intptr_t) addr
;
76 return (psaddr_t
) (uintptr_t) addr
;
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,
84 This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and
88 ps_xfer_memory (const struct ps_prochandle
*ph
, psaddr_t addr
,
89 gdb_byte
*buf
, size_t len
, int write
)
91 struct cleanup
*old_chain
= save_inferior_ptid ();
93 CORE_ADDR core_addr
= ps_addr_to_core_addr (addr
);
95 inferior_ptid
= ph
->ptid
;
98 ret
= target_write_memory (core_addr
, buf
, len
);
100 ret
= target_read_memory (core_addr
, buf
, len
);
102 do_cleanups (old_chain
);
104 return (ret
== 0 ? PS_OK
: PS_ERR
);
108 /* Stop the target process PH. */
111 ps_pstop (gdb_ps_prochandle_t ph
)
113 /* The process is always stopped when under control of GDB. */
117 /* Resume the target process PH. */
120 ps_pcontinue (gdb_ps_prochandle_t ph
)
122 /* Pretend we did successfully continue the process. GDB will take
123 care of it later on. */
127 /* Stop the lightweight process LWPID within the target process PH. */
130 ps_lstop (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
132 /* All lightweight processes are stopped when under control of GDB. */
136 /* Resume the lightweight process (LWP) LWPID within the target
140 ps_lcontinue (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
142 /* Pretend we did successfully continue LWPID. GDB will take care
147 /* Get the size of the architecture-dependent extra state registers
148 for LWP LWPID within the target process PH and return it in
152 ps_lgetxregsize (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, int *xregsize
)
154 /* FIXME: Not supported yet. */
158 /* Get the extra state registers of LWP LWPID within the target
159 process PH and store them in XREGSET. */
162 ps_lgetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
164 /* FIXME: Not supported yet. */
168 /* Set the extra state registers of LWP LWPID within the target
169 process PH from XREGSET. */
172 ps_lsetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
174 /* FIXME: Not supported yet. */
178 /* Log (additional) diognostic information. */
181 ps_plog (const char *fmt
, ...)
185 va_start (args
, fmt
);
186 vfprintf_filtered (gdb_stderr
, fmt
, args
);
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. */
195 ps_pglobal_lookup (gdb_ps_prochandle_t ph
, const char *obj
,
196 const char *name
, psaddr_t
*sym_addr
)
198 struct bound_minimal_symbol ms
;
199 struct cleanup
*old_chain
= save_current_program_space ();
200 struct inferior
*inf
= find_inferior_pid (ptid_get_pid (ph
->ptid
));
203 set_current_program_space (inf
->pspace
);
205 /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */
206 ms
= lookup_minimal_symbol (name
, NULL
, NULL
);
207 if (ms
.minsym
== NULL
)
211 *sym_addr
= core_addr_to_ps_addr (BMSYMBOL_VALUE_ADDRESS (ms
));
215 do_cleanups (old_chain
);
219 /* Read SIZE bytes from the target process PH at address ADDR and copy
223 ps_pdread (gdb_ps_prochandle_t ph
, psaddr_t addr
,
224 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
226 return ps_xfer_memory (ph
, addr
, buf
, size
, 0);
229 /* Write SIZE bytes from BUF into the target process PH at address ADDR. */
232 ps_pdwrite (gdb_ps_prochandle_t ph
, psaddr_t addr
,
233 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
235 return ps_xfer_memory (ph
, addr
, (gdb_byte
*) buf
, size
, 1);
238 /* Read SIZE bytes from the target process PH at address ADDR and copy
242 ps_ptread (gdb_ps_prochandle_t ph
, psaddr_t addr
,
243 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
245 return ps_xfer_memory (ph
, addr
, (gdb_byte
*) buf
, size
, 0);
248 /* Write SIZE bytes from BUF into the target process PH at address ADDR. */
251 ps_ptwrite (gdb_ps_prochandle_t ph
, psaddr_t addr
,
252 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
254 return ps_xfer_memory (ph
, addr
, (gdb_byte
*) buf
, size
, 1);
257 /* Get the general registers of LWP LWPID within the target process PH
258 and store them in GREGSET. */
261 ps_lgetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, prgregset_t gregset
)
263 struct cleanup
*old_chain
= save_inferior_ptid ();
264 struct regcache
*regcache
;
266 inferior_ptid
= ptid_build (ptid_get_pid (ph
->ptid
), lwpid
, 0);
267 regcache
= get_thread_arch_regcache (inferior_ptid
, target_gdbarch ());
269 target_fetch_registers (regcache
, -1);
270 fill_gregset (regcache
, (gdb_gregset_t
*) gregset
, -1);
272 do_cleanups (old_chain
);
276 /* Set the general registers of LWP LWPID within the target process PH
280 ps_lsetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, const prgregset_t gregset
)
282 struct cleanup
*old_chain
= save_inferior_ptid ();
283 struct regcache
*regcache
;
285 inferior_ptid
= ptid_build (ptid_get_pid (ph
->ptid
), lwpid
, 0);
286 regcache
= get_thread_arch_regcache (inferior_ptid
, target_gdbarch ());
288 supply_gregset (regcache
, (const gdb_gregset_t
*) gregset
);
289 target_store_registers (regcache
, -1);
291 do_cleanups (old_chain
);
295 /* Get the floating-point registers of LWP LWPID within the target
296 process PH and store them in FPREGSET. */
299 ps_lgetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
300 gdb_prfpregset_t
*fpregset
)
302 struct cleanup
*old_chain
= save_inferior_ptid ();
303 struct regcache
*regcache
;
305 inferior_ptid
= ptid_build (ptid_get_pid (ph
->ptid
), lwpid
, 0);
306 regcache
= get_thread_arch_regcache (inferior_ptid
, target_gdbarch ());
308 target_fetch_registers (regcache
, -1);
309 fill_fpregset (regcache
, (gdb_fpregset_t
*) fpregset
, -1);
311 do_cleanups (old_chain
);
315 /* Set the floating-point registers of LWP LWPID within the target
316 process PH from FPREGSET. */
319 ps_lsetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
320 const gdb_prfpregset_t
*fpregset
)
322 struct cleanup
*old_chain
= save_inferior_ptid ();
323 struct regcache
*regcache
;
325 inferior_ptid
= ptid_build (ptid_get_pid (ph
->ptid
), lwpid
, 0);
326 regcache
= get_thread_arch_regcache (inferior_ptid
, target_gdbarch ());
328 supply_fpregset (regcache
, (const gdb_fpregset_t
*) fpregset
);
329 target_store_registers (regcache
, -1);
331 do_cleanups (old_chain
);
335 /* Return overall process id of the target PH. Special for GNU/Linux
336 -- not used on Solaris. */
339 ps_getpid (gdb_ps_prochandle_t ph
)
341 return ptid_get_pid (ph
->ptid
);
344 /* Provide a prototype to silence -Wmissing-prototypes. */
345 extern initialize_file_ftype _initialize_proc_service
;
348 _initialize_proc_service (void)
350 /* This function solely exists to make sure this module is linked
351 into the final binary. */