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fb0e1ba7 | 1 | /* <proc_service.h> implementation. |
ca557f44 | 2 | |
61baf725 | 3 | Copyright (C) 1999-2017 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 | ||
9b11e3a7 | 84 | This is a helper function for ps_pdread and ps_pdwrite. */ |
fb0e1ba7 MK |
85 | |
86 | static ps_err_e | |
76e1ee85 | 87 | ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr, |
47b667de | 88 | gdb_byte *buf, size_t len, int write) |
fb0e1ba7 | 89 | { |
39f77062 | 90 | struct cleanup *old_chain = save_inferior_ptid (); |
fb0e1ba7 | 91 | int ret; |
76e1ee85 | 92 | CORE_ADDR core_addr = ps_addr_to_core_addr (addr); |
fb0e1ba7 | 93 | |
93a91755 | 94 | inferior_ptid = ph->ptid; |
fb0e1ba7 MK |
95 | |
96 | if (write) | |
76e1ee85 | 97 | ret = target_write_memory (core_addr, buf, len); |
fb0e1ba7 | 98 | else |
76e1ee85 | 99 | ret = target_read_memory (core_addr, buf, len); |
fb0e1ba7 MK |
100 | |
101 | do_cleanups (old_chain); | |
102 | ||
103 | return (ret == 0 ? PS_OK : PS_ERR); | |
104 | } | |
105 | \f | |
106 | ||
fb0e1ba7 MK |
107 | /* Search for the symbol named NAME within the object named OBJ within |
108 | the target process PH. If the symbol is found the address of the | |
109 | symbol is stored in SYM_ADDR. */ | |
110 | ||
111 | ps_err_e | |
112 | ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, | |
76e1ee85 | 113 | const char *name, psaddr_t *sym_addr) |
fb0e1ba7 | 114 | { |
3b7344d5 | 115 | struct bound_minimal_symbol ms; |
c988ad87 | 116 | struct cleanup *old_chain = save_current_program_space (); |
c9657e70 | 117 | struct inferior *inf = find_inferior_ptid (ph->ptid); |
c988ad87 TT |
118 | ps_err_e result; |
119 | ||
120 | set_current_program_space (inf->pspace); | |
fb0e1ba7 MK |
121 | |
122 | /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */ | |
123 | ms = lookup_minimal_symbol (name, NULL, NULL); | |
3b7344d5 | 124 | if (ms.minsym == NULL) |
c988ad87 TT |
125 | result = PS_NOSYM; |
126 | else | |
127 | { | |
77e371c0 | 128 | *sym_addr = core_addr_to_ps_addr (BMSYMBOL_VALUE_ADDRESS (ms)); |
c988ad87 TT |
129 | result = PS_OK; |
130 | } | |
fb0e1ba7 | 131 | |
c988ad87 TT |
132 | do_cleanups (old_chain); |
133 | return result; | |
fb0e1ba7 MK |
134 | } |
135 | ||
136 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
137 | them into BUF. */ | |
138 | ||
139 | ps_err_e | |
76e1ee85 | 140 | ps_pdread (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
141 | gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
142 | { | |
49e66b4d | 143 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0); |
fb0e1ba7 MK |
144 | } |
145 | ||
146 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
147 | ||
148 | ps_err_e | |
76e1ee85 | 149 | ps_pdwrite (gdb_ps_prochandle_t ph, psaddr_t addr, |
fb0e1ba7 MK |
150 | gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
151 | { | |
47b667de | 152 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
153 | } |
154 | ||
fb0e1ba7 MK |
155 | /* Get the general registers of LWP LWPID within the target process PH |
156 | and store them in GREGSET. */ | |
157 | ||
158 | ps_err_e | |
159 | ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) | |
160 | { | |
3e00d44f SM |
161 | ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
162 | struct regcache *regcache | |
163 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
fb0e1ba7 | 164 | |
594f7785 UW |
165 | target_fetch_registers (regcache, -1); |
166 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); | |
fb0e1ba7 | 167 | |
fb0e1ba7 MK |
168 | return PS_OK; |
169 | } | |
170 | ||
171 | /* Set the general registers of LWP LWPID within the target process PH | |
172 | from GREGSET. */ | |
173 | ||
174 | ps_err_e | |
175 | ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) | |
176 | { | |
3e00d44f SM |
177 | ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
178 | struct regcache *regcache | |
179 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
fb0e1ba7 | 180 | |
594f7785 UW |
181 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
182 | target_store_registers (regcache, -1); | |
fb0e1ba7 | 183 | |
fb0e1ba7 MK |
184 | return PS_OK; |
185 | } | |
186 | ||
187 | /* Get the floating-point registers of LWP LWPID within the target | |
188 | process PH and store them in FPREGSET. */ | |
189 | ||
190 | ps_err_e | |
191 | ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
192 | gdb_prfpregset_t *fpregset) | |
193 | { | |
3e00d44f SM |
194 | ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
195 | struct regcache *regcache | |
196 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
fb0e1ba7 | 197 | |
594f7785 UW |
198 | target_fetch_registers (regcache, -1); |
199 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); | |
fb0e1ba7 | 200 | |
fb0e1ba7 MK |
201 | return PS_OK; |
202 | } | |
203 | ||
204 | /* Set the floating-point registers of LWP LWPID within the target | |
205 | process PH from FPREGSET. */ | |
206 | ||
207 | ps_err_e | |
208 | ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, | |
209 | const gdb_prfpregset_t *fpregset) | |
210 | { | |
3e00d44f SM |
211 | ptid_t ptid = ptid_build (ptid_get_pid (ph->ptid), lwpid, 0); |
212 | struct regcache *regcache | |
213 | = get_thread_arch_regcache (ptid, target_gdbarch ()); | |
fb0e1ba7 | 214 | |
594f7785 UW |
215 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
216 | target_store_registers (regcache, -1); | |
fb0e1ba7 | 217 | |
fb0e1ba7 MK |
218 | return PS_OK; |
219 | } | |
220 | ||
ca557f44 AC |
221 | /* Return overall process id of the target PH. Special for GNU/Linux |
222 | -- not used on Solaris. */ | |
fb0e1ba7 MK |
223 | |
224 | pid_t | |
225 | ps_getpid (gdb_ps_prochandle_t ph) | |
226 | { | |
93a91755 | 227 | return ptid_get_pid (ph->ptid); |
fb0e1ba7 MK |
228 | } |
229 | ||
2c0b251b PA |
230 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
231 | extern initialize_file_ftype _initialize_proc_service; | |
232 | ||
fb0e1ba7 MK |
233 | void |
234 | _initialize_proc_service (void) | |
235 | { | |
236 | /* This function solely exists to make sure this module is linked | |
237 | into the final binary. */ | |
238 | } |