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Diffstat (limited to 'gdb/microblaze-rom.c')
| -rw-r--r-- | gdb/microblaze-rom.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/gdb/microblaze-rom.c b/gdb/microblaze-rom.c new file mode 100644 index 0000000..d6c27dc --- /dev/null +++ b/gdb/microblaze-rom.c @@ -0,0 +1,191 @@ +/* Remote debugging interface to Xilinx MicroBlaze. + + Copyright 2009 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "monitor.h" +#include "gdb_string.h" +#include "serial.h" +#include "regcache.h" + +static char *picobug_inits[] = +{"\r", NULL}; + +static struct target_ops picobug_ops; +static struct monitor_ops picobug_cmds; + +/* Picobug only supports a subset of registers from MCore. In reality, + it doesn't support ss1, either. */ +static char *picobug_regnames[] = { + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + "psr", "vbr", "epsr", "fpsr", "epc", "fpc", 0, "ss1", + "ss2", "ss3", "ss4", 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, + "pc" }; + + + +static void +picobug_open (char *args, int from_tty) +{ + monitor_open (args, &picobug_cmds, from_tty); +} +/* We choose to write our own dumpregs routine, since the output of + the register dumping is rather difficult to encapsulate in a + regexp: + +picobug> rd + pc 2f00031e epc 2f00031e fpc 00000000 + psr 80000101 epsr 80000101 fpsr 00000000 +ss0-ss4 bad0beef 00000000 00000000 00000000 00000000 vbr 30005c00 + r0-r7 2f0fff4c 00000090 00000001 00000002 00000003 00000004 00000005 00000006 + r8-r15 2f0fff64 00000000 00000000 00000000 00000000 00000000 00000000 2f00031e +*/ + +static int +picobug_dumpregs (struct regcache *regcache) +{ + struct gdbarch *gdbarch = get_regcache_arch (regcache); + char buf[1024]; + int resp_len; + char *p; + + /* Send the dump register command to the monitor and + get the reply. */ + monitor_printf (picobug_cmds.dump_registers); + resp_len = monitor_expect_prompt (buf, sizeof (buf)); + + p = strtok (buf, " \t\r\n"); + while (p) + { + if (strchr (p, '-')) + { + /* got a range. either r0-r7, r8-r15 or ss0-ss4. */ + if (strncmp (p, "r0", 2) == 0 || strncmp (p, "r8", 2) == 0) + { + int rn = (p[1] == '0' ? 0 : 8); + int i = 0; + + /* Get the next 8 values and record them. */ + while (i < 8) + { + p = strtok (NULL, " \t\r\n"); + if (p) + monitor_supply_register (regcache, rn + i, p); + i++; + } + } + else if (strncmp (p, "ss", 2) == 0) + { + /* get the next five values, ignoring the first. */ + int rn; + p = strtok (NULL, " \t\r\n"); + for (rn = 39; rn < 43; rn++) + { + p = strtok (NULL, " \t\r\n"); + if (p) + monitor_supply_register (regcache, rn, p); + } + } + else + { + break; + } + } + else + { + /* Simple register type, paired. */ + char *name = p; + int i; + + /* Get and record value. */ + p = strtok (NULL, " \t\r\n"); + if (p) + { + for (i = 0; i < gdbarch_num_regs (gdbarch); i++) + { + if (picobug_regnames[i] + && strcmp (picobug_regnames[i], name) == 0) + break; + } + + if (i <= gdbarch_num_regs (gdbarch)) + monitor_supply_register (regcache, i, p); + } + } + p = strtok (NULL, " \t\r\n"); + } + + return 0; +} + +static void +init_picobug_cmds (void) +{ + picobug_cmds.flags = MO_GETMEM_NEEDS_RANGE | MO_CLR_BREAK_USES_ADDR + | MO_PRINT_PROGRAM_OUTPUT; + + picobug_cmds.init = picobug_inits; /* Init strings */ + picobug_cmds.cont = "g\n"; /* continue command */ + picobug_cmds.step = "s\n"; /* single step */ + picobug_cmds.set_break = "br %x\n"; /* set a breakpoint */ + picobug_cmds.clr_break = "nobr %x\n"; /* clear a breakpoint */ + picobug_cmds.clr_all_break = "nobr\n"; /* clear all breakpoints */ + picobug_cmds.setmem.cmdb = "mm %x %x ;b\n"; /* setmem.cmdb (addr, value) */ + picobug_cmds.setmem.cmdw = "mm %x %x ;h\n"; /* setmem.cmdw (addr, value) */ + picobug_cmds.setmem.cmdl = "mm %x %x ;w\n"; /* setmem.cmdl (addr, value) */ + picobug_cmds.getmem.cmdb = "md %x %x\n"; /* getmem.cmdb (start addr, + end addr) */ + picobug_cmds.getmem.resp_delim = ":"; /* getmem.resp_delim */ + picobug_cmds.setreg.cmd = "rm %s %x\n"; /* setreg.cmd (name, value) */ + picobug_cmds.getreg.cmd = "rd %s\n"; /* getreg.cmd (name) */ + picobug_cmds.getreg.resp_delim = ":"; /* getreg.resp_delim */ + picobug_cmds.dump_registers = "rd\n"; /* dump_registers */ + picobug_cmds.dumpregs = picobug_dumpregs; /* dump registers parser */ + picobug_cmds.load = "lo\n"; /* download command */ + picobug_cmds.prompt = "picobug> "; /* monitor command prompt */ + picobug_cmds.line_term = "\n"; /* end-of-line terminator */ + picobug_cmds.target = &picobug_ops; /* target operations */ + picobug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ + picobug_cmds.regnames = picobug_regnames; /* registers names */ + picobug_cmds.num_breakpoints = 20; /* number of breakpoints */ + picobug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ +} + +void +_initialize_picobug_rom () +{ + int i; + + /* Initialize m32r RevC monitor target. */ + init_picobug_cmds (); + init_monitor_ops (&picobug_ops); + picobug_ops.to_shortname = "picobug"; + picobug_ops.to_longname = "picobug monitor"; + picobug_ops.to_doc = "Debug via the picobug monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya)."; + picobug_ops.to_open = picobug_open; + + add_target (&picobug_ops); +} |