1 /* Remote debugging interface to Motorola picobug monitor for gdb, 2 the GNU debugger. 3 Copyright 1999, 2000, 2001 Free Software Foundation, Inc. 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 9 the Free Software Foundation; either version 2 of the License, or 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 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, 20 Boston, MA 02111-1307, USA. */ 21 22 #include "defs.h" 23 #include "gdbcore.h" 24 #include "target.h" 25 #include "monitor.h" 26 #include "gdb_string.h" 27 #include "regcache.h" 28 #include "serial.h" 29 30 /* Functions used only in this file. */ 31 32 static void init_picobug_cmds (void); 33 34 35 /* Functions exported from this file. */ 36 37 void _initialize_picobug_rom (void); 38 39 void picobug_open (char *args, int from_tty); 40 41 int picobug_dumpregs (void); 42 43 44 static char *picobug_inits[] = 45 {"\r", NULL}; 46 47 static struct target_ops picobug_ops; 48 static struct monitor_ops picobug_cmds; 49 50 /* Picobug only supports a subset of registers from MCore. In reality, 51 it doesn't support ss1, either. */ 52 /* *INDENT-OFF* */ 53 static char *picobug_regnames[] = { 54 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", 55 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", 56 0, 0, 0, 0, 0, 0, 0, 0, 57 0, 0, 0, 0, 0, 0, 0, 0, 58 "psr", "vbr", "epsr", "fpsr", "epc", "fpc", 0, "ss1", 59 "ss2", "ss3", "ss4", 0, 0, 0, 0, 0, 60 0, 0, 0, 0, 0, 0, 0, 0, 61 0, 0, 0, 0, 0, 0, 0, 0, 62 "pc" }; 63 /* *INDENT-ON* */ 64 65 66 67 void 68 picobug_open (char *args, int from_tty) 69 { 70 monitor_open (args, &picobug_cmds, from_tty); 71 } 72 /* *INDENT-OFF* */ 73 /* We choose to write our own dumpregs routine, since the output of 74 the register dumping is rather difficult to encapsulate in a 75 regexp: 76 77 picobug> rd 78 pc 2f00031e epc 2f00031e fpc 00000000 79 psr 80000101 epsr 80000101 fpsr 00000000 80 ss0-ss4 bad0beef 00000000 00000000 00000000 00000000 vbr 30005c00 81 r0-r7 2f0fff4c 00000090 00000001 00000002 00000003 00000004 00000005 00000006 82 r8-r15 2f0fff64 00000000 00000000 00000000 00000000 00000000 00000000 2f00031e */ 83 /* *INDENT-ON* */ 84 85 86 87 int 88 picobug_dumpregs (void) 89 { 90 char buf[1024]; 91 int resp_len; 92 char *p; 93 94 /* Send the dump register command to the monitor and 95 get the reply. */ 96 monitor_printf (picobug_cmds.dump_registers); 97 resp_len = monitor_expect_prompt (buf, sizeof (buf)); 98 99 p = strtok (buf, " \t\r\n"); 100 while (p) 101 { 102 if (strchr (p, '-')) 103 { 104 /* got a range. either r0-r7, r8-r15 or ss0-ss4 */ 105 if (DEPRECATED_STREQN (p, "r0", 2) || DEPRECATED_STREQN (p, "r8", 2)) 106 { 107 int rn = (p[1] == '0' ? 0 : 8); 108 int i = 0; 109 110 /* Get the next 8 values and record them. */ 111 while (i < 8) 112 { 113 p = strtok (NULL, " \t\r\n"); 114 if (p) 115 monitor_supply_register (rn + i, p); 116 i++; 117 } 118 } 119 else if (DEPRECATED_STREQN (p, "ss", 2)) 120 { 121 /* get the next five values, ignoring the first */ 122 int rn; 123 p = strtok (NULL, " \t\r\n"); 124 for (rn = 39; rn < 43; rn++) 125 { 126 p = strtok (NULL, " \t\r\n"); 127 if (p) 128 monitor_supply_register (rn, p); 129 } 130 } 131 else 132 { 133 break; 134 } 135 } 136 else 137 { 138 /* Simple register type, paired */ 139 char *name = p; 140 int i; 141 142 /* Get and record value */ 143 p = strtok (NULL, " \t\r\n"); 144 if (p) 145 { 146 for (i = 0; i < NUM_REGS; i++) 147 { 148 if (picobug_regnames[i] && DEPRECATED_STREQ (picobug_regnames[i], name)) 149 break; 150 } 151 152 if (i <= NUM_REGS) 153 monitor_supply_register (i, p); 154 } 155 } 156 p = strtok (NULL, " \t\r\n"); 157 } 158 159 return 0; 160 } 161 162 static void 163 init_picobug_cmds (void) 164 { 165 picobug_cmds.flags = MO_GETMEM_NEEDS_RANGE | MO_CLR_BREAK_USES_ADDR | MO_PRINT_PROGRAM_OUTPUT; 166 167 picobug_cmds.init = picobug_inits; /* Init strings */ 168 picobug_cmds.cont = "g\n"; /* continue command */ 169 picobug_cmds.step = "s\n"; /* single step */ 170 picobug_cmds.set_break = "br %x\n"; /* set a breakpoint */ 171 picobug_cmds.clr_break = "nobr %x\n"; /* clear a breakpoint */ 172 picobug_cmds.clr_all_break = "nobr\n"; /* clear all breakpoints */ 173 picobug_cmds.setmem.cmdb = "mm %x %x ;b\n"; /* setmem.cmdb (addr, value) */ 174 picobug_cmds.setmem.cmdw = "mm %x %x ;h\n"; /* setmem.cmdw (addr, value) */ 175 picobug_cmds.setmem.cmdl = "mm %x %x ;w\n"; /* setmem.cmdl (addr, value) */ 176 picobug_cmds.getmem.cmdb = "md %x %x\n"; /* getmem.cmdb (start addr, end addr) */ 177 picobug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */ 178 picobug_cmds.setreg.cmd = "rm %s %x\n"; /* setreg.cmd (name, value) */ 179 picobug_cmds.getreg.cmd = "rd %s\n"; /* getreg.cmd (name) */ 180 picobug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */ 181 picobug_cmds.dump_registers = "rd\n"; /* dump_registers */ 182 picobug_cmds.dumpregs = picobug_dumpregs; /* dump registers parser */ 183 picobug_cmds.load = "lo\n"; /* download command */ 184 picobug_cmds.prompt = "picobug> "; /* monitor command prompt */ 185 picobug_cmds.line_term = "\n"; /* end-of-line terminator */ 186 picobug_cmds.target = &picobug_ops; /* target operations */ 187 picobug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ 188 picobug_cmds.regnames = picobug_regnames; /* registers names */ 189 picobug_cmds.num_breakpoints = 20; /* number of breakpoints */ 190 picobug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ 191 } 192 193 void 194 _initialize_picobug_rom (void) 195 { 196 int i; 197 198 /* Initialize m32r RevC monitor target */ 199 init_picobug_cmds (); 200 init_monitor_ops (&picobug_ops); 201 picobug_ops.to_shortname = "picobug"; 202 picobug_ops.to_longname = "picobug monitor"; 203 picobug_ops.to_doc = "Debug via the picobug monitor.\n\ 204 Specify the serial device it is connected to (e.g. /dev/ttya)."; 205 picobug_ops.to_open = picobug_open; 206 207 add_target (&picobug_ops); 208 } 209