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Diffstat (limited to 'gdb/mon960-rom.c')
| -rw-r--r-- | gdb/mon960-rom.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/gdb/mon960-rom.c b/gdb/mon960-rom.c new file mode 100644 index 00000000000..32dcaff7a99 --- /dev/null +++ b/gdb/mon960-rom.c @@ -0,0 +1,264 @@ +/* Remote target glue for the Intel 960 MON960 ROM monitor. + Copyright 1995, 1996 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 2 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, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "monitor.h" +#include "serial.h" +#include "srec.h" +#include "xmodem.h" +#include "symtab.h" +#include "symfile.h" /* for generic_load */ + + +#define USE_GENERIC_LOAD + +static struct target_ops mon960_ops; + +static void mon960_open PARAMS ((char *args, int from_tty)); + +#ifdef USE_GENERIC_LOAD + +static void +mon960_load_gen (filename, from_tty) + char *filename; + int from_tty; +{ + extern int inferior_pid; + + generic_load (filename, from_tty); + /* Finally, make the PC point at the start address */ + if (exec_bfd) + write_pc (bfd_get_start_address (exec_bfd)); + + inferior_pid = 0; /* No process now */ +} + +#else + +static void +mon960_load (desc, file, hashmark) + serial_t desc; + char *file; + int hashmark; +{ + bfd *abfd; + asection *s; + char *buffer; + int i; + + buffer = alloca (XMODEM_PACKETSIZE); + abfd = bfd_openr (file, 0); + if (!abfd) + { + printf_filtered ("Unable to open file %s\n", file); + return; + } + if (bfd_check_format (abfd, bfd_object) == 0) + { + printf_filtered ("File is not an object file\n"); + return; + } + for (s = abfd->sections; s; s = s->next) + if (s->flags & SEC_LOAD) + { + bfd_size_type section_size; + printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, + s->vma + s->_raw_size); + gdb_flush (gdb_stdout); + monitor_printf (current_monitor->load, s->vma); + if (current_monitor->loadresp) + monitor_expect (current_monitor->loadresp, NULL, 0); + xmodem_init_xfer (desc); + section_size = bfd_section_size (abfd, s); + for (i = 0; i < section_size; i += XMODEM_DATASIZE) + { + int numbytes; + numbytes = min (XMODEM_DATASIZE, section_size - i); + bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i, + numbytes); + xmodem_send_packet (desc, buffer, numbytes, hashmark); + if (hashmark) + { + putchar_unfiltered ('#'); + gdb_flush (gdb_stdout); + } + } /* Per-packet (or S-record) loop */ + xmodem_finish_xfer (desc); + monitor_expect_prompt (NULL, 0); + putchar_unfiltered ('\n'); + } /* Loadable sections */ + if (hashmark) + putchar_unfiltered ('\n'); +} + +#endif /* USE_GENERIC_LOAD */ + +/* This array of registers need to match the indexes used by GDB. + This exists because the various ROM monitors use different strings + than does GDB, and don't necessarily support all the registers + either. So, typing "info reg sp" becomes a "r30". */ + +/* these correspond to the offsets from tm-* files from config directories */ +/* g0-g14, fp, pfp, sp, rip,r3-15, pc, ac, tc, fp0-3 */ +/* NOTE: "ip" is documented as "ir" in the Mon960 UG. */ +/* NOTE: "ir" can't be accessed... but there's an ip and rip. */ +static char *full_regnames[NUM_REGS] = { + /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7", + /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", + /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", + /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp", + /* 32 */ "pc", "ac", "tc", "ip", "fp0", "fp1", "fp2", "fp3", + }; + +static char *mon960_regnames[NUM_REGS]; + +/* Define the monitor command strings. Since these are passed directly + through to a printf style function, we may include formatting + strings. We also need a CR or LF on the end. */ + +/* need to pause the monitor for timing reasons, so slow it down */ + +#if 0 +/* FIXME: this extremely long init string causes MON960 to return two NAKS + instead of performing the autobaud recognition, at least when gdb + is running on GNU/Linux. The short string below works on Linux, and on + SunOS using a tcp serial connection. Must retest on SunOS using a + direct serial connection; if that works, get rid of the long string. */ +static char *mon960_inits[] = {"\n\r\r\r\r\r\r\r\r\r\r\r\r\r\r\n\r\n\r\n", NULL}; +#else +static char *mon960_inits[] = { "\r", NULL}; +#endif + +static struct monitor_ops mon960_cmds ; + +static void +init_mon960_cmds (void) +{ + mon960_cmds.flags = MO_CLR_BREAK_USES_ADDR + | MO_NO_ECHO_ON_OPEN | MO_SEND_BREAK_ON_STOP | MO_GETMEM_READ_SINGLE ; /* flags */ + mon960_cmds.init = mon960_inits; /* Init strings */ + mon960_cmds.cont = "go\n\r"; /* continue command */ + mon960_cmds.step = "st\n\r"; /* single step */ + mon960_cmds.stop = NULL; /* break interrupts the program */ + mon960_cmds.set_break = NULL; /* set a breakpoint */ + mon960_cmds.clr_break = /* can't use "br" because only 2 hw bps are supported */ + mon960_cmds.clr_all_break = NULL; /* clear a breakpoint - "de" is for hw bps */ + NULL, /* clear all breakpoints */ + mon960_cmds.fill = NULL; /* fill (start end val) */ + /* can't use "fi" because it takes words, not bytes */ + /* can't use "mb", "md" or "mo" because they require interaction */ + mon960_cmds.setmem.cmdb = NULL; /* setmem.cmdb (addr, value) */ + mon960_cmds.setmem.cmdw = NULL; /* setmem.cmdw (addr, value) */ + mon960_cmds.setmem.cmdl = "md %x %x\n\r"; /* setmem.cmdl (addr, value) */ + mon960_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ + mon960_cmds.setmem.resp_delim = NULL; /* setmem.resp_delim */ + mon960_cmds.setmem.term = NULL; /* setmem.term */ + mon960_cmds.setmem.term_cmd = NULL; /* setmem.term_cmd */ + /* since the parsing of multiple bytes is difficult due to + interspersed addresses, we'll only read 1 value at a time, + even tho these can handle a count */ + mon960_cmds.getmem.cmdb = "db %x\n\r"; /* getmem.cmdb (addr, #bytes) */ + mon960_cmds.getmem.cmdw = "ds %x\n\r"; /* getmem.cmdw (addr, #swords) */ + mon960_cmds.getmem.cmdl = "di %x\n\r"; /* getmem.cmdl (addr, #words) */ + mon960_cmds.getmem.cmdll = "dd %x\n\r"; /* getmem.cmdll (addr, #dwords) */ + mon960_cmds.getmem.resp_delim = " : "; /* getmem.resp_delim */ + mon960_cmds.getmem.term = NULL; /* getmem.term */ + mon960_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */ + mon960_cmds.setreg.cmd = "md %s %x\n\r"; /* setreg.cmd (name, value) */ + mon960_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */ + mon960_cmds.setreg.term = NULL; /* setreg.term */ + mon960_cmds.setreg.term_cmd = NULL, /* setreg.term_cmd */ + mon960_cmds.getreg.cmd = "di %s\n\r"; /* getreg.cmd (name) */ + mon960_cmds.getreg.resp_delim = " : "; /* getreg.resp_delim */ + mon960_cmds.getreg.term = NULL; /* getreg.term */ + mon960_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */ + mon960_cmds.dump_registers = "re\n\r"; /* dump_registers */ + mon960_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)"; /* register_pattern */ + mon960_cmds.supply_register = NULL; /* supply_register */ +#ifdef USE_GENERIC_LOAD + mon960_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */ + mon960_cmds.load = NULL; /* download command */ + mon960_cmds.loadresp = NULL; /* load response */ +#else + mon960_cmds.load_routine = mon960_load ; /* load_routine (defaults to SRECs) */ + mon960_cmds.load = "do\n\r"; /* download command */ + mon960_cmds.loadresp = "Downloading\n\r" ;/* load response */ +#endif + mon960_cmds.prompt = "=>"; /* monitor command prompt */ + mon960_cmds.line_term = "\n\r"; /* end-of-command delimitor */ + mon960_cmds.cmd_end = NULL; /* optional command terminator */ + mon960_cmds.target = &mon960_ops; /* target operations */ + mon960_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ + mon960_cmds.regnames = mon960_regnames; /* registers names */ + mon960_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ +}; + +static void +mon960_open (args, from_tty) + char *args; + int from_tty; +{ + char buf[64]; + + monitor_open (args, &mon960_cmds, from_tty); + + /* Attempt to fetch the value of the first floating point register (fp0). + If the monitor returns a string containing the word "Bad" we'll assume + this processor has no floating point registers, and nullify the + regnames entries that refer to FP registers. */ + + monitor_printf (mon960_cmds.getreg.cmd, full_regnames[FP0_REGNUM]); /* di fp0 */ + if (monitor_expect_prompt (buf, sizeof(buf)) != -1) + if (strstr(buf, "Bad") != NULL) + { + int i; + + for (i = FP0_REGNUM; i < FP0_REGNUM + 4; i++) + mon960_regnames[i] = NULL; + } +} + +void +_initialize_mon960 () +{ + memcpy(mon960_regnames, full_regnames, sizeof(full_regnames)); + + init_mon960_cmds (); + + init_monitor_ops (&mon960_ops); + + mon960_ops.to_shortname = "mon960"; /* for the target command */ + mon960_ops.to_longname = "Intel 960 MON960 monitor"; +#ifdef USE_GENERIC_LOAD + mon960_ops.to_load = mon960_load_gen; /* FIXME - should go back and try "do" */ +#endif + /* use SW breaks; target only supports 2 HW breakpoints */ + mon960_ops.to_insert_breakpoint = memory_insert_breakpoint; + mon960_ops.to_remove_breakpoint = memory_remove_breakpoint; + + mon960_ops.to_doc = + "Use an Intel 960 board running the MON960 debug monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya)."; + + mon960_ops.to_open = mon960_open; + add_target (&mon960_ops); +} |