1 /* 68k-dependent portions of the RPC protocol 2 used with a VxWorks target 3 4 Contributed by Wind River Systems. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, 21 Boston, MA 02111-1307, USA. */ 22 23 #include <stdio.h> 24 #include "defs.h" 25 26 #include "vx-share/regPacket.h" 27 #include "frame.h" 28 #include "inferior.h" 29 #include "target.h" 30 #include "gdbcore.h" 31 #include "command.h" 32 #include "symtab.h" 33 #include "symfile.h" 34 #include "regcache.h" 35 36 #include "gdb_string.h" 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <sys/types.h> 40 #include <sys/time.h> 41 #include <sys/socket.h> 42 43 #ifdef _AIX /* IBM claims "void *malloc()" not char * */ 44 #define malloc bogon_malloc 45 #endif 46 47 #include <rpc/rpc.h> 48 49 #ifdef _AIX 50 #undef malloc 51 #endif 52 53 #include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */ 54 #include <netdb.h> 55 #include "vx-share/ptrace.h" 56 #include "vx-share/xdr_ptrace.h" 57 #include "vx-share/xdr_ld.h" 58 #include "vx-share/xdr_rdb.h" 59 #include "vx-share/dbgRpcLib.h" 60 61 /* get rid of value.h if possible */ 62 #include <value.h> 63 #include <symtab.h> 64 65 /* Flag set if target has fpu */ 66 67 extern int target_has_fp; 68 69 /* Generic register read/write routines in remote-vx.c. */ 70 71 extern void net_read_registers (); 72 extern void net_write_registers (); 73 74 /* Read a register or registers from the VxWorks target. 75 REGNO is the register to read, or -1 for all; currently, 76 it is ignored. FIXME look at regno to improve efficiency. */ 77 78 void 79 vx_read_register (int regno) 80 { 81 char mc68k_greg_packet[MC68K_GREG_PLEN]; 82 char mc68k_fpreg_packet[MC68K_FPREG_PLEN]; 83 84 /* Get general-purpose registers. */ 85 86 net_read_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_GETREGS); 87 88 memcpy (deprecated_registers, 89 &mc68k_greg_packet[MC68K_R_D0] 90 16 * MC68K_GREG_SIZE); 91 memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)], 92 &mc68k_greg_packet[MC68K_R_SR], 93 MC68K_GREG_SIZE); 94 memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)], 95 &mc68k_greg_packet[MC68K_R_PC], 96 MC68K_GREG_SIZE); 97 98 /* Get floating-point registers, if the target system has them. 99 Otherwise, zero them. */ 100 101 if (target_has_fp) 102 { 103 net_read_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN, 104 PTRACE_GETFPREGS); 105 106 memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], 107 &mc68k_fpreg_packet[MC68K_R_FP0], 108 MC68K_FPREG_SIZE * 8); 109 memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], 110 &mc68k_fpreg_packet[MC68K_R_FPCR], 111 MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8)); 112 } 113 else 114 { 115 memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], 116 0, MC68K_FPREG_SIZE * 8); 117 memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], 118 0, MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8)); 119 } 120 121 /* Mark the register cache valid. */ 122 123 deprecated_registers_fetched (); 124 } 125 126 /* Store a register or registers into the VxWorks target. 127 REGNO is the register to store, or -1 for all; currently, 128 it is ignored. FIXME look at regno to improve efficiency. */ 129 130 void 131 vx_write_register (int regno) 132 { 133 char mc68k_greg_packet[MC68K_GREG_PLEN]; 134 char mc68k_fpreg_packet[MC68K_FPREG_PLEN]; 135 136 /* Store general-purpose registers. */ 137 138 memcpy (&mc68k_greg_packet[MC68K_R_D0], deprecated_registers, 139 16 * MC68K_GREG_SIZE); 140 memcpy (&mc68k_greg_packet[MC68K_R_SR], 141 &deprecated_registers[DEPRECATED_REGISTER_BYTE (PS_REGNUM)], 142 MC68K_GREG_SIZE); 143 memcpy (&mc68k_greg_packet[MC68K_R_PC], 144 &deprecated_registers[DEPRECATED_REGISTER_BYTE (PC_REGNUM)], 145 MC68K_GREG_SIZE); 146 147 net_write_registers (mc68k_greg_packet, MC68K_GREG_PLEN, PTRACE_SETREGS); 148 149 /* Store floating point registers if the target has them. */ 150 151 if (target_has_fp) 152 { 153 memcpy (&mc68k_fpreg_packet[MC68K_R_FP0], 154 &deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM)], 155 MC68K_FPREG_SIZE * 8); 156 memcpy (&mc68k_fpreg_packet[MC68K_R_FPCR], 157 &deprecated_registers[DEPRECATED_REGISTER_BYTE (FPC_REGNUM)], 158 MC68K_FPREG_PLEN - (MC68K_FPREG_SIZE * 8)); 159 160 net_write_registers (mc68k_fpreg_packet, MC68K_FPREG_PLEN, 161 PTRACE_SETFPREGS); 162 } 163 } 164