1 /* libthread_db helper functions for the remote server for GDB. 2 Copyright 2002, 2004 3 Free Software Foundation, Inc. 4 5 Contributed by MontaVista Software. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, 22 Boston, MA 02111-1307, USA. */ 23 24 #include "server.h" 25 26 /* This file is currently tied to GNU/Linux. It should scale well to 27 another libthread_db implementation, with the approriate gdbserver 28 hooks, but for now this means we can use GNU/Linux's target data. */ 29 30 #include "linux-low.h" 31 32 /* Correct for all GNU/Linux targets (for quite some time). */ 33 #define GDB_GREGSET_T elf_gregset_t 34 #define GDB_FPREGSET_T elf_fpregset_t 35 36 #ifndef HAVE_ELF_FPREGSET_T 37 /* Make sure we have said types. Not all platforms bring in <linux/elf.h> 38 via <sys/procfs.h>. */ 39 #ifdef HAVE_LINUX_ELF_H 40 #include <linux/elf.h> 41 #endif 42 #endif 43 44 #include "../gdb_proc_service.h" 45 46 typedef struct ps_prochandle *gdb_ps_prochandle_t; 47 typedef void *gdb_ps_read_buf_t; 48 typedef const void *gdb_ps_write_buf_t; 49 typedef size_t gdb_ps_size_t; 50 51 #ifdef HAVE_LINUX_REGSETS 52 #define HAVE_REGSETS 53 #endif 54 55 #ifdef HAVE_REGSETS 56 static struct regset_info * 57 gregset_info(void) 58 { 59 int i = 0; 60 61 while (target_regsets[i].size != -1) 62 { 63 if (target_regsets[i].type == GENERAL_REGS) 64 break; 65 i++; 66 } 67 68 return &target_regsets[i]; 69 } 70 #endif 71 72 /* Search for the symbol named NAME within the object named OBJ within 73 the target process PH. If the symbol is found the address of the 74 symbol is stored in SYM_ADDR. */ 75 76 ps_err_e 77 ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj, 78 const char *name, paddr_t *sym_addr) 79 { 80 CORE_ADDR addr; 81 82 if (look_up_one_symbol (name, &addr) == 0) 83 return PS_NOSYM; 84 85 *sym_addr = (paddr_t) (unsigned long) addr; 86 return PS_OK; 87 } 88 89 /* Read SIZE bytes from the target process PH at address ADDR and copy 90 them into BUF. */ 91 92 ps_err_e 93 ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr, 94 gdb_ps_read_buf_t buf, gdb_ps_size_t size) 95 { 96 read_inferior_memory (addr, buf, size); 97 return PS_OK; 98 } 99 100 /* Write SIZE bytes from BUF into the target process PH at address ADDR. */ 101 102 ps_err_e 103 ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr, 104 gdb_ps_write_buf_t buf, gdb_ps_size_t size) 105 { 106 return write_inferior_memory (addr, buf, size); 107 } 108 109 /* Get the general registers of LWP LWPID within the target process PH 110 and store them in GREGSET. */ 111 112 ps_err_e 113 ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset) 114 { 115 #ifdef HAVE_REGSETS 116 struct thread_info *reg_inferior, *save_inferior; 117 118 reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, 119 lwpid); 120 if (reg_inferior == NULL) 121 return PS_ERR; 122 123 save_inferior = current_inferior; 124 current_inferior = reg_inferior; 125 126 the_target->fetch_registers (0); 127 gregset_info()->fill_function (gregset); 128 129 current_inferior = save_inferior; 130 return PS_OK; 131 #else 132 return PS_ERR; 133 #endif 134 } 135 136 /* Set the general registers of LWP LWPID within the target process PH 137 from GREGSET. */ 138 139 ps_err_e 140 ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset) 141 { 142 /* Unneeded. */ 143 return PS_ERR; 144 } 145 146 /* Get the floating-point registers of LWP LWPID within the target 147 process PH and store them in FPREGSET. */ 148 149 ps_err_e 150 ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, 151 gdb_prfpregset_t *fpregset) 152 { 153 /* Unneeded. */ 154 return PS_ERR; 155 } 156 157 /* Set the floating-point registers of LWP LWPID within the target 158 process PH from FPREGSET. */ 159 160 ps_err_e 161 ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, 162 const gdb_prfpregset_t *fpregset) 163 { 164 /* Unneeded. */ 165 return PS_ERR; 166 } 167 168 /* Return overall process id of the target PH. Special for GNU/Linux 169 -- not used on Solaris. */ 170 171 pid_t 172 ps_getpid (gdb_ps_prochandle_t ph) 173 { 174 return ph->pid; 175 } 176 177 178