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Diffstat (limited to 'gdb/sparclet-rom.c')
-rw-r--r-- | gdb/sparclet-rom.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/gdb/sparclet-rom.c b/gdb/sparclet-rom.c new file mode 100644 index 0000000..98bc27b --- /dev/null +++ b/gdb/sparclet-rom.c @@ -0,0 +1,279 @@ +/* Remote target glue for the SPARC Sparclet 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 "symtab.h" +#include "symfile.h" /* for generic_load */ + +#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY) +#define HAVE_SGTTY +#endif + +#ifdef HAVE_SGTTY +#include <sys/ioctl.h> +#endif + +#include <sys/types.h> /* Needed by file.h on Sys V */ +#include <sys/file.h> +#include <signal.h> +#include <sys/stat.h> + +#define USE_GENERIC_LOAD +#define USE_SW_BREAKS + +static struct target_ops sparclet_ops; + +static void sparclet_open PARAMS ((char *args, int from_tty)); + +#ifdef USE_GENERIC_LOAD + +static void +sparclet_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 +sparclet_xmodem_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'); +} + +static void +sparclet_load (desc, file, hashmark) + serial_t desc; + char *file; + int hashmark; +{ +??? +} +#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". */ + +/*PSR 0x00000080 impl ver icc AW LE EE EC EF PIL S PS ET CWP WIM + 0x0 0x0 0x0 0 0 0 0 0 0x0 1 0 0 0x00 0x2 + 0000010 + INS LOCALS OUTS GLOBALS + 0 0x00000000 0x00000000 0x00000000 0x00000000 + 1 0x00000000 0x00000000 0x00000000 0x00000000 + 2 0x00000000 0x00000000 0x00000000 0x00000000 + 3 0x00000000 0x00000000 0x00000000 0x00000000 + 4 0x00000000 0x00000000 0x00000000 0x00000000 + 5 0x00000000 0x00001000 0x00000000 0x00000000 + 6 0x00000000 0x00000000 0x123f0000 0x00000000 + 7 0x00000000 0x00000000 0x00000000 0x00000000 +pc: 0x12010000 0x00000000 unimp +npc: 0x12010004 0x00001000 unimp 0x1000 +tbr: 0x00000000 +y: 0x00000000 +*/ +/* these correspond to the offsets from tm-* files from config directories */ + +/* is wim part of psr?? */ +/* monitor wants lower case */ +static char *sparclet_regnames[NUM_REGS] = REGISTER_NAMES; + +/* 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 */ + +static char *sparclet_inits[] = {"\n\r\r\n", NULL}; + +static struct monitor_ops sparclet_cmds = +{ + MO_CLR_BREAK_USES_ADDR + | MO_HEX_PREFIX + | MO_HANDLE_NL + | MO_NO_ECHO_ON_OPEN + | MO_NO_ECHO_ON_SETMEM + | MO_RUN_FIRST_TIME + | MO_GETMEM_READ_SINGLE, /* flags */ + sparclet_inits, /* Init strings */ + "cont\r", /* continue command */ + "step\r", /* single step */ + "\r", /* break interrupts the program */ + "+bp %x\r", /* set a breakpoint */ + /* can't use "br" because only 2 hw bps are supported */ + "-bp %x\r", /* clear a breakpoint */ + "-bp\r", /* clear all breakpoints */ + NULL, /* fill (start end val) */ + /* can't use "fi" because it takes words, not bytes */ + { + /* ex [addr] [-n count] [-b|-s|-l] default: ex cur -n 1 -b */ + "ex %x -b\r%x\rq\r", /* setmem.cmdb (addr, value) */ + "ex %x -s\r%x\rq\r", /* setmem.cmdw (addr, value) */ + "ex %x -l\r%x\rq\r", + NULL, /* setmem.cmdll (addr, value) */ + NULL, /*": ", /* setmem.resp_delim */ + NULL, /*"? ", /* setmem.term */ + NULL, /*"q\r", /* 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 */ + /* we can use -n to set count to read, but may have to parse? */ + "ex %x -n 1 -b\r", /* getmem.cmdb (addr, #bytes) */ + "ex %x -n 1 -s\r", /* getmem.cmdw (addr, #swords) */ + "ex %x -n 1 -l\r", /* getmem.cmdl (addr, #words) */ + NULL, /* getmem.cmdll (addr, #dwords) */ + ": ", /* getmem.resp_delim */ + NULL, /* getmem.term */ + NULL, /* getmem.term_cmd */ + }, + { + "reg %s 0x%x\r", /* setreg.cmd (name, value) */ + NULL, /* setreg.resp_delim */ + NULL, /* setreg.term */ + NULL /* setreg.term_cmd */ + }, + { + "reg %s\r", /* getreg.cmd (name) */ + ": ", /* getreg.resp_delim */ + NULL, /* getreg.term */ + NULL, /* getreg.term_cmd */ + }, + "reg\r", /* dump_registers */ + "\\(\\w+\\)=\\([0-9a-fA-F]+\\)", /* register_pattern */ + NULL, /* supply_register */ +#ifdef USE_GENERIC_LOAD + NULL, /* load_routine (defaults to SRECs) */ + NULL, /* download command */ + NULL, /* load response */ +#else + sparclet_load, /* load_routine (defaults to SRECs) */ + /* load [c|a] [s|f|r] [addr count] */ + "load a s %x\r", /* download command */ + "load: ", /* load response */ +#endif + "monitor>", /* monitor command prompt */ + /* yikes! gdb core dumps without this delimitor!! */ + "\r", /* end-of-command delimitor */ + NULL, /* optional command terminator */ + &sparclet_ops, /* target operations */ + SERIAL_1_STOPBITS, /* number of stop bits */ + sparclet_regnames, /* registers names */ + MONITOR_OPS_MAGIC /* magic */ +}; + +static void +sparclet_open (args, from_tty) + char *args; + int from_tty; +{ + monitor_open (args, &sparclet_cmds, from_tty); +} + +void +_initialize_sparclet () +{ + init_monitor_ops (&sparclet_ops); + + sparclet_ops.to_shortname = "sparclet"; /* for the target command */ + sparclet_ops.to_longname = "SPARC Sparclet monitor"; +#ifdef USE_GENERIC_LOAD + sparclet_ops.to_load = sparclet_load_gen; /* FIXME - should go back and try "do" */ +#endif +#ifdef USE_SW_BREAKS + /* use SW breaks; target only supports 2 HW breakpoints */ + sparclet_ops.to_insert_breakpoint = memory_insert_breakpoint; + sparclet_ops.to_remove_breakpoint = memory_remove_breakpoint; +#endif + + sparclet_ops.to_doc = + "Use a board running the Sparclet debug monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya)."; + + sparclet_ops.to_open = sparclet_open; + add_target (&sparclet_ops); +} + |