Commit | Line | Data |
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fb0e1ba7 | 1 | /* <proc_service.h> implementation. |
ca557f44 | 2 | |
b811d2c2 | 3 | Copyright (C) 1999-2020 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 | 23 | #include "inferior.h" |
00431a78 | 24 | #include "gdbthread.h" |
fb0e1ba7 MK |
25 | #include "symtab.h" |
26 | #include "target.h" | |
7f7fe91e | 27 | #include "regcache.h" |
77e371c0 | 28 | #include "objfiles.h" |
fb0e1ba7 | 29 | |
76e1ee85 | 30 | #include "gdb_proc_service.h" |
76e1ee85 DJ |
31 | |
32 | #include <sys/procfs.h> | |
33 | ||
fb0e1ba7 MK |
34 | /* Prototypes for supply_gregset etc. */ |
35 | #include "gregset.h" | |
36 | \f | |
37 | ||
fb0e1ba7 MK |
38 | /* Helper functions. */ |
39 | ||
76e1ee85 DJ |
40 | /* Convert a psaddr_t to a CORE_ADDR. */ |
41 | ||
42 | static CORE_ADDR | |
43 | ps_addr_to_core_addr (psaddr_t addr) | |
44 | { | |
45 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
46 | return (intptr_t) addr; | |
47 | else | |
48 | return (uintptr_t) addr; | |
49 | } | |
50 | ||
51 | /* Convert a CORE_ADDR to a psaddr_t. */ | |
52 | ||
53 | static psaddr_t | |
54 | core_addr_to_ps_addr (CORE_ADDR addr) | |
55 | { | |
56 | if (exec_bfd && bfd_get_sign_extend_vma (exec_bfd)) | |
57 | return (psaddr_t) (intptr_t) addr; | |
58 | else | |
59 | return (psaddr_t) (uintptr_t) addr; | |
60 | } | |
61 | ||
fb0e1ba7 MK |
62 | /* Transfer LEN bytes of memory between BUF and address ADDR in the |
63 | process specified by PH. If WRITE, transfer them to the process, | |
64 | else transfer them from the process. Returns PS_OK for success, | |
65 | PS_ERR on failure. | |
66 | ||
9b11e3a7 | 67 | This is a helper function for ps_pdread and ps_pdwrite. */ |
fb0e1ba7 MK |
68 | |
69 | static ps_err_e | |
76e1ee85 | 70 | ps_xfer_memory (const struct ps_prochandle *ph, psaddr_t addr, |
47b667de | 71 | gdb_byte *buf, size_t len, int write) |
fb0e1ba7 | 72 | { |
5b6d1e4f PA |
73 | scoped_restore_current_inferior restore_inferior; |
74 | set_current_inferior (ph->thread->inf); | |
fb0e1ba7 | 75 | |
5b6d1e4f PA |
76 | scoped_restore_current_program_space restore_current_progspace; |
77 | set_current_program_space (ph->thread->inf->pspace); | |
78 | ||
79 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); | |
00431a78 | 80 | inferior_ptid = ph->thread->ptid; |
fb0e1ba7 | 81 | |
5b6d1e4f PA |
82 | CORE_ADDR core_addr = ps_addr_to_core_addr (addr); |
83 | ||
84 | int ret; | |
fb0e1ba7 | 85 | if (write) |
76e1ee85 | 86 | ret = target_write_memory (core_addr, buf, len); |
fb0e1ba7 | 87 | else |
76e1ee85 | 88 | ret = target_read_memory (core_addr, buf, len); |
fb0e1ba7 MK |
89 | return (ret == 0 ? PS_OK : PS_ERR); |
90 | } | |
91 | \f | |
92 | ||
fb0e1ba7 MK |
93 | /* Search for the symbol named NAME within the object named OBJ within |
94 | the target process PH. If the symbol is found the address of the | |
95 | symbol is stored in SYM_ADDR. */ | |
96 | ||
97 | ps_err_e | |
281c4447 | 98 | ps_pglobal_lookup (struct ps_prochandle *ph, const char *obj, |
76e1ee85 | 99 | const char *name, psaddr_t *sym_addr) |
fb0e1ba7 | 100 | { |
00431a78 | 101 | inferior *inf = ph->thread->inf; |
5ed8105e PA |
102 | |
103 | scoped_restore_current_program_space restore_pspace; | |
c988ad87 TT |
104 | |
105 | set_current_program_space (inf->pspace); | |
fb0e1ba7 MK |
106 | |
107 | /* FIXME: kettenis/2000-09-03: What should we do with OBJ? */ | |
5ed8105e | 108 | bound_minimal_symbol ms = lookup_minimal_symbol (name, NULL, NULL); |
3b7344d5 | 109 | if (ms.minsym == NULL) |
5ed8105e | 110 | return PS_NOSYM; |
fb0e1ba7 | 111 | |
5ed8105e PA |
112 | *sym_addr = core_addr_to_ps_addr (BMSYMBOL_VALUE_ADDRESS (ms)); |
113 | return PS_OK; | |
fb0e1ba7 MK |
114 | } |
115 | ||
116 | /* Read SIZE bytes from the target process PH at address ADDR and copy | |
117 | them into BUF. */ | |
118 | ||
119 | ps_err_e | |
281c4447 | 120 | ps_pdread (struct ps_prochandle *ph, psaddr_t addr, void *buf, size_t size) |
fb0e1ba7 | 121 | { |
49e66b4d | 122 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 0); |
fb0e1ba7 MK |
123 | } |
124 | ||
125 | /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ | |
126 | ||
127 | ps_err_e | |
281c4447 RO |
128 | ps_pdwrite (struct ps_prochandle *ph, psaddr_t addr, |
129 | const void *buf, size_t size) | |
fb0e1ba7 | 130 | { |
47b667de | 131 | return ps_xfer_memory (ph, addr, (gdb_byte *) buf, size, 1); |
fb0e1ba7 MK |
132 | } |
133 | ||
4c4e7ad4 PA |
134 | /* Get a regcache for LWPID using its inferior's "main" architecture, |
135 | which is the register set libthread_db expects to be using. In | |
136 | multi-arch debugging scenarios, the thread's architecture may | |
8133c7dc | 137 | differ from the inferior's "main" architecture. */ |
4c4e7ad4 PA |
138 | |
139 | static struct regcache * | |
140 | get_ps_regcache (struct ps_prochandle *ph, lwpid_t lwpid) | |
141 | { | |
142 | inferior *inf = ph->thread->inf; | |
5b6d1e4f PA |
143 | return get_thread_arch_regcache (inf->process_target (), |
144 | ptid_t (inf->pid, lwpid), | |
145 | inf->gdbarch); | |
4c4e7ad4 PA |
146 | } |
147 | ||
fb0e1ba7 MK |
148 | /* Get the general registers of LWP LWPID within the target process PH |
149 | and store them in GREGSET. */ | |
150 | ||
151 | ps_err_e | |
281c4447 | 152 | ps_lgetregs (struct ps_prochandle *ph, lwpid_t lwpid, prgregset_t gregset) |
fb0e1ba7 | 153 | { |
4c4e7ad4 | 154 | struct regcache *regcache = get_ps_regcache (ph, lwpid); |
fb0e1ba7 | 155 | |
594f7785 UW |
156 | target_fetch_registers (regcache, -1); |
157 | fill_gregset (regcache, (gdb_gregset_t *) gregset, -1); | |
fb0e1ba7 | 158 | |
fb0e1ba7 MK |
159 | return PS_OK; |
160 | } | |
161 | ||
162 | /* Set the general registers of LWP LWPID within the target process PH | |
163 | from GREGSET. */ | |
164 | ||
165 | ps_err_e | |
281c4447 | 166 | ps_lsetregs (struct ps_prochandle *ph, lwpid_t lwpid, const prgregset_t gregset) |
fb0e1ba7 | 167 | { |
4c4e7ad4 | 168 | struct regcache *regcache = get_ps_regcache (ph, lwpid); |
fb0e1ba7 | 169 | |
594f7785 UW |
170 | supply_gregset (regcache, (const gdb_gregset_t *) gregset); |
171 | target_store_registers (regcache, -1); | |
fb0e1ba7 | 172 | |
fb0e1ba7 MK |
173 | return PS_OK; |
174 | } | |
175 | ||
176 | /* Get the floating-point registers of LWP LWPID within the target | |
177 | process PH and store them in FPREGSET. */ | |
178 | ||
179 | ps_err_e | |
12b164e9 GB |
180 | ps_lgetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
181 | prfpregset_t *fpregset) | |
fb0e1ba7 | 182 | { |
4c4e7ad4 | 183 | struct regcache *regcache = get_ps_regcache (ph, lwpid); |
fb0e1ba7 | 184 | |
594f7785 UW |
185 | target_fetch_registers (regcache, -1); |
186 | fill_fpregset (regcache, (gdb_fpregset_t *) fpregset, -1); | |
fb0e1ba7 | 187 | |
fb0e1ba7 MK |
188 | return PS_OK; |
189 | } | |
190 | ||
191 | /* Set the floating-point registers of LWP LWPID within the target | |
192 | process PH from FPREGSET. */ | |
193 | ||
194 | ps_err_e | |
281c4447 | 195 | ps_lsetfpregs (struct ps_prochandle *ph, lwpid_t lwpid, |
12b164e9 | 196 | const prfpregset_t *fpregset) |
fb0e1ba7 | 197 | { |
4c4e7ad4 | 198 | struct regcache *regcache = get_ps_regcache (ph, lwpid); |
fb0e1ba7 | 199 | |
594f7785 UW |
200 | supply_fpregset (regcache, (const gdb_fpregset_t *) fpregset); |
201 | target_store_registers (regcache, -1); | |
fb0e1ba7 | 202 | |
fb0e1ba7 MK |
203 | return PS_OK; |
204 | } | |
205 | ||
ca557f44 AC |
206 | /* Return overall process id of the target PH. Special for GNU/Linux |
207 | -- not used on Solaris. */ | |
fb0e1ba7 MK |
208 | |
209 | pid_t | |
281c4447 | 210 | ps_getpid (struct ps_prochandle *ph) |
fb0e1ba7 | 211 | { |
e99b03dc | 212 | return ph->thread->ptid.pid (); |
fb0e1ba7 MK |
213 | } |
214 | ||
6c265988 | 215 | void _initialize_proc_service (); |
fb0e1ba7 | 216 | void |
6c265988 | 217 | _initialize_proc_service () |
fb0e1ba7 MK |
218 | { |
219 | /* This function solely exists to make sure this module is linked | |
220 | into the final binary. */ | |
221 | } |