1 /* <proc_service.h> implementation.
2 Copyright 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
23 #include "gdb_proc_service.h"
24 #include <sys/procfs.h>
30 /* Prototypes for supply_gregset etc. */
34 /* Fix-up some broken systems. */
36 /* The prototypes in <proc_service.h> are slightly different on older
37 systems. Compensate for the discrepancies. */
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
;
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
;
52 /* Building process ids. */
55 #define MERGEPID(PID, TID) (((PID) & 0xffff) | ((TID) << 16))
58 #define BUILD_LWP(tid, pid) MERGEPID (pid, tid)
61 /* Helper functions. */
64 restore_inferior_pid (void *arg
)
66 int *saved_pid_ptr
= arg
;
67 inferior_pid
= *saved_pid_ptr
;
71 static struct cleanup
*
72 save_inferior_pid (void)
76 saved_pid_ptr
= xmalloc (sizeof (int));
77 *saved_pid_ptr
= inferior_pid
;
78 return make_cleanup (restore_inferior_pid
, saved_pid_ptr
);
81 /* Transfer LEN bytes of memory between BUF and address ADDR in the
82 process specified by PH. If WRITE, transfer them to the process,
83 else transfer them from the process. Returns PS_OK for success,
86 This is a helper function for ps_pdread, ps_pdwrite, ps_ptread and
90 ps_xfer_memory (const struct ps_prochandle
*ph
, paddr_t addr
,
91 char *buf
, size_t len
, int write
)
93 struct cleanup
*old_chain
= save_inferior_pid ();
96 inferior_pid
= ph
->pid
;
99 ret
= target_write_memory (addr
, buf
, len
);
101 ret
= target_read_memory (addr
, buf
, len
);
103 do_cleanups (old_chain
);
105 return (ret
== 0 ? PS_OK
: PS_ERR
);
109 /* Stop the target process PH. */
112 ps_pstop (gdb_ps_prochandle_t ph
)
114 /* The process is always stopped when under control of GDB. */
118 /* Resume the target process PH. */
121 ps_pcontinue (gdb_ps_prochandle_t ph
)
123 /* Pretend we did successfully continue the process. GDB will take
124 care of it later on. */
128 /* Stop the lightweight process LWPID within the target process PH. */
131 ps_lstop (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
133 /* All lightweight processes are stopped when under control of GDB. */
137 /* Resume the lightweight process (LWP) LWPID within the target
141 ps_lcontinue (gdb_ps_prochandle_t ph
, lwpid_t lwpid
)
143 /* Pretend we did successfully continue LWPID. GDB will take care
148 /* Get the size of the architecture-dependent extra state registers
149 for LWP LWPID within the target process PH and return it in
153 ps_lgetxregsize (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, int *xregsize
)
155 /* FIXME: Not supported yet. */
159 /* Get the extra state registers of LWP LWPID within the target
160 process PH and store them in XREGSET. */
163 ps_lgetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
165 /* FIXME: Not supported yet. */
169 /* Set the extra state registers of LWP LWPID within the target
170 process PH from XREGSET. */
173 ps_lsetxregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, caddr_t xregset
)
175 /* FIXME: Not supported yet. */
179 /* Log (additional) diognostic information. */
182 ps_plog (const char *fmt
, ...)
186 va_start (args
, fmt
);
187 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
, paddr_t
*sym_addr
)
198 struct minimal_symbol
*ms
;
200 /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */
201 ms
= lookup_minimal_symbol (name
, NULL
, NULL
);
205 *sym_addr
= SYMBOL_VALUE_ADDRESS (ms
);
209 /* Read SIZE bytes from the target process PH at address ADDR and copy
213 ps_pdread (gdb_ps_prochandle_t ph
, paddr_t addr
,
214 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
216 return ps_xfer_memory (ph
, addr
, buf
, size
, 0);
219 /* Write SIZE bytes from BUF into the target process PH at address ADDR. */
222 ps_pdwrite (gdb_ps_prochandle_t ph
, paddr_t addr
,
223 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
225 return ps_xfer_memory (ph
, addr
, (char *) buf
, size
, 1);
228 /* Read SIZE bytes from the target process PH at address ADDR and copy
232 ps_ptread (gdb_ps_prochandle_t ph
, paddr_t addr
,
233 gdb_ps_read_buf_t buf
, gdb_ps_size_t size
)
235 return ps_xfer_memory (ph
, addr
, buf
, size
, 0);
238 /* Write SIZE bytes from BUF into the target process PH at address ADDR. */
241 ps_ptwrite (gdb_ps_prochandle_t ph
, paddr_t addr
,
242 gdb_ps_write_buf_t buf
, gdb_ps_size_t size
)
244 return ps_xfer_memory (ph
, addr
, (char *) buf
, size
, 1);
247 /* Get the general registers of LWP LWPID within the target process PH
248 and store them in GREGSET. */
251 ps_lgetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, prgregset_t gregset
)
253 struct cleanup
*old_chain
= save_inferior_pid ();
255 inferior_pid
= BUILD_LWP (lwpid
, ph
->pid
);
257 target_fetch_registers (-1);
258 fill_gregset ((gdb_gregset_t
*) gregset
, -1);
260 do_cleanups (old_chain
);
264 /* Set the general registers of LWP LWPID within the target process PH
268 ps_lsetregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
, const prgregset_t gregset
)
270 struct cleanup
*old_chain
= save_inferior_pid ();
272 inferior_pid
= BUILD_LWP (lwpid
, ph
->pid
);
274 /* FIXME: We should really make supply_gregset const-correct. */
275 supply_gregset ((gdb_gregset_t
*) gregset
);
276 target_store_registers (-1);
278 do_cleanups (old_chain
);
282 /* Get the floating-point registers of LWP LWPID within the target
283 process PH and store them in FPREGSET. */
286 ps_lgetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
287 gdb_prfpregset_t
*fpregset
)
289 struct cleanup
*old_chain
= save_inferior_pid ();
291 inferior_pid
= BUILD_LWP (lwpid
, ph
->pid
);
293 target_fetch_registers (-1);
294 fill_fpregset ((gdb_fpregset_t
*) fpregset
, -1);
296 do_cleanups (old_chain
);
300 /* Set the floating-point registers of LWP LWPID within the target
301 process PH from FPREGSET. */
304 ps_lsetfpregs (gdb_ps_prochandle_t ph
, lwpid_t lwpid
,
305 const gdb_prfpregset_t
*fpregset
)
307 struct cleanup
*old_chain
= save_inferior_pid ();
309 inferior_pid
= BUILD_LWP (lwpid
, ph
->pid
);
311 /* FIXME: We should really make supply_fpregset const-correct. */
312 supply_fpregset ((gdb_fpregset_t
*) fpregset
);
313 target_store_registers (-1);
315 do_cleanups (old_chain
);
319 /* Return overall process id of the target PH.
320 Special for Linux -- not used on Solaris. */
323 ps_getpid (gdb_ps_prochandle_t ph
)
329 _initialize_proc_service (void)
331 /* This function solely exists to make sure this module is linked
332 into the final binary. */
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